bluuebunny/crossref_metadata_2025 huggingface dataset:
Contested Sovereignties: Indigenous disputes over plurinational resource governance
Authors: Radhuber Isabella M. , Radcliffe Sarah A.
Published: February 2022

Indigenous organizations in the Andean countries of Ecuador and Bolivia originated novel proposals to pluralize sovereign arrangements through plurinational statehood. Reflecting diverse Indigenous groups’ relations with postcolonial states, these proposals created a unique basis for re-negotiating (sovereign) resource governance. Despite the constitutional endorsement of the plurinational state model however, the latest empirical evidence confirms growing state control over subsoil resources that excises Indigenous peoples from decision-making over resources. In this paper, we trace the emergence of novel agendas for sovereignty-multiplicity, showing how Indigenous agendas had anticipated the need to go beyond their rights over subsoil resources and autonomous territories. These agendas implied re-negotiating national sovereignty in light of the countries’ internal ethno-political and epistemic heterogeneity. Under nominally plurinational states however, resource governance outcomes perpetuate and normalise longstanding epistemic and power differentials between rights-bearing political subjects and Indigenous subjects. We highlight the colonial-modern bases of current sovereignty arrangements, identifying the presumptions and legal parameters that shape the dynamics between states, people and Indigenous people. Situating resource governance in relation to the concept of modernity/coloniality, we propose to (re)think sovereignty arrangements in the colonial present in light of internal heterogeneity.
Highly Reliable Memory Operation of High-Density Three-Terminal Thyristor Random Access Memory
Authors: Kim Hyangwoo , Cho Hyeonsu , Kwak Hyeon-Tak , Seo Myunghae , Lee Seungho , Kong Byoung Don , Baek Chang-Ki
Published: February 2022

Three-terminal (3-T) thyristor random-access memory is explored for a next-generation high-density nanoscale vertical cross-point array. The effects of standby voltages on the device are thoroughly investigated in terms of gate–cathode voltage (VGC,ST) and anode–cathode voltage (VAC,ST) in the standby state for superior data retention characteristics and low-power operation. The device with the optimized VGC,ST of − 0.4 V and VAC,ST of 0.6 V shows the continuous data retention capability without refresh operation with a low standby current of 1.14 pA. In addition, a memory array operation scheme of 3-T TRAM is proposed to address array disturbance issues. The presented array operation scheme can efficiently minimize program, erase and read disturbances on unselected cells by adjusting gate–cathode voltage. The standby voltage turns out to be beneficial to improve retention characteristics: over 10 s. With the proposed memory array operation, 3-T TRAM can provide excellent data retention characteristics and high-density memory configurations comparable with or surpass conventional dynamic random-access memory (DRAM) technology.
Candidate powdery mildew resistance gene in wheat landrace cultivar Hongyoumai discovered using SLAF and BSR-seq
Authors: Wang Junmei , Li Yahong , Xu Fei , Xu Hongxing , Han Zihang , Liu Lulu , Song Yuli
Published: February 2022

Background

Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is an important disease affecting wheat production. Planting resistant cultivars is an effective, safe, and economical method to control the disease. Map construction using next-generation sequencing facilitates gene cloning based on genetic maps and high-throughput gene expression studies. In this study, specific-locus amplified fragment sequencing (SLAF) was used to analyze Huixianhong (female parent), Hongyoumai (male parent) and two bulks (50 homozygous resistant and 50 susceptible F2:3 segregating population derived from Huixianhong × Hongyoumai to determine a candidate gene region for resistance to powdery mildew on the long arm of chromosome 7B in wheat landrace Hongyoumai. Gene expressions of candidate regions were obtained using bulked segregant RNA-seq in 10 homozygous resistant and 10 susceptible progeny inoculated by Bgt.. Candidate genes were obtained using homology-based cloning in two parents.

Results

A 12.95 Mb long candidate region in chromosome 7BL was identified, and five blocks in SLAF matched the scaffold of the existing co-segregation marker Xmp1207. In the candidate region, 39 differentially expressed genes were identified using RNA-seq, including RGA4 (Wheat_Chr_Trans_newGene_16173)—a disease resistance protein whose expression was upregulated in the resistant pool at 16 h post inoculation with Bgt. Quantitative reverse transcription (qRT)-PCR was used to further verify the expression patterns in Wheat_Chr_Trans_newGene_16173 that were significantly different in the two parents Hongyoumai and Huixianhong. Two RGA4 genes were cloned based on the sequence of Wheat_Chr_Trans_newGene_16173, respectively from two parent and there was one amino acid mutation: S to G in Huixianhong on 510 loci.

Conclusion

The combination of SLAF and BSR-seq methods identified a candidate region of pmHYM in the chromosome 7BL of wheat landrace cultivar Hongyoumai. Comparative analysis between the scaffold of co-segregating marker Xmp1207 and SLAF-seq showed five matching blocks. qRT-PCR showed that only the resistant gene Wheat_Chr_Trans_newGene_16173 was significantly upregulated in the resistant parent Hongyoumai after inoculation with Bgt, and gene cloning revealed a difference in one amino acid between the two parent genes, indicating it was involved in the resistance response and may be the candidate resistance gene pmHYM.
Coronary artery perforation after bioresorbable scaffold implantation treated with a new generation covered stent—OCT insights
Authors: Chen D. , Gadeley R. , Wang A. , Jepson N.
Published: February 2022

Background

Coronary artery perforation is a rare but potentially lethal complication of percutaneous coronary intervention (PCI) with an associated mortality of 7–17%. We report the case of coronary artery perforation complicating Absorb bioresorbable vascular scaffold (BVS) implantation and the associated technical challenges with managing this life-threatening complication.

Case report

A 46-year-old male was referred to our institution and underwent PCI with an Absorb bioabsorbable vascular scaffold (BVS) to a proximal LAD long segment bifurcation lesion. Following pre-dilation and deployment of the 3.5 × 28 mm Absorb BVS, high pressure post-dilation of the distal scaffold was complicated by a large, Ellis type III coronary perforation with no flow to the distal LAD beyond the rupture, and associated with a large pericardial effusion confirmed on bedside transthoracic echocardiogram (TTE). The insult was temporised with prolonged balloon inflation within the Absorb BVS immediately proximal to the site of perforation, permitting urgent insertion of a pericardial drain. After deflation of the balloon, a 3.0 × 21 mm BeGraft covered stent was deployed across the perforation, restoring normal LAD flow and abolishing the perforation. Cardio-pulmonary resuscitation was not required and the patient remained conscious throughout the procedure. TTE demonstrated normal left ventricular function and the patient was discharged 3 days later. Repeat angiography at 3 months showed patent stents with TIMI III flow, and optical coherence tomography (OCT) showed good expansion and apposition of the proximal Absorb BVS and BeGraft. The patient has remained well 4 years after PCI with no major cardiovascular events.

Conclusion

The utility of bioresorbable scaffold technology remains controversial although meticulous implantation techniques are associated with improved clinical outcomes. Adoption of the Pre-dilatation, Sizing and Post-dilatation (‘PSP’) method of BVS implantation with routine aggressive vessel preparation and scaffold optimization however may contribute to a higher risk of vessel perforation. The case emphasises the importance of accurate sizing of the vessel with intracoronary imaging and demonstrates the value of newer generation covered stents with single-layer design and slimmer crossing profile producing improved deliverability and procedural success.
Chronic liver disease and cirrhosis increase morbidity in geriatric patients treated surgically for hip fractures: analysis of the US Nationwide Inpatient Sample
Authors: Tseng Feng-Jen , Gou Guo-Hau , Wang Sheng-Hao , Shyu Jia-Fwu , Pan Ru-Yu
Published: February 2022

Background

This study aimed to evaluate the impact of chronic liver disease and cirrhosis on inpatient outcomes of geriatric hip fracture surgery.

Materials and methods

Using population-based retrospective study design, this study extracted data from the US Nationwide Inpatient Sample (NIS) database 2005–2014, identifying patients aged ≥ 65 years undergoing hip fracture repair. Main outcomes were in-hospital mortality, any/specific complications, non-routine discharge, extended length of stay (LOS) and hospital costs. Associations between cirrhosis, non-cirrhotic chronic liver disease and outcomes were determined using regression analysis.

Results

Data of 347,363 hip fracture patients included 344,035 without liver disease, 1257 with non-cirrhotic chronic liver disease and 2,071 with cirrhosis. After adjustments, non-cirrhotic chronic liver disease was significantly associated with non-routine discharge (OR: 1.247, 95% CI: 1.038–1.498), acute kidney injury (OR: 1.266, 95% CI: 1.039–1.541), extended LOS (OR: 1.285, 95% CI: 1.122–1.473) and hospital costs (beta: 9173.42, 95% CI: 6925.9–11,420.95) compared to no liver disease; while cirrhosis was significantly associated with higher risk of in-hospital mortality (OR: 2.325, 95% CI: 1.849–2.922), any complication (OR: 1.295, 95% CI: 1.143–1.467), acute kidney injury (OR: 1.242, 95% CI: 1.177–1.433), non-routine discharge (OR: 1.650, 95% CI: 1.412–1.928), extended LOS (OR: 1.405, 95% CI: 1.263–1.562) and hospital costs (beta: 6680.24, 95% CI: 4921.53–8438.95) compared to no liver disease.

Conclusion

In geriatric hip fracture patients undergoing surgical repair, non-cirrhotic chronic liver disease and cirrhosis independently predict non-routine discharge, acute kidney injury, prolonged LOS and greater hospital costs, and cirrhosis is also significantly associated with greater risk of any complication and in-hospital mortality.
QuantiFERON-TB Gold plus testing for the detection of LTBI among health care workers in major TB hospitals of the Northern Kyrgyz Republic
Authors: Corbett Caroline , Kalmambetova Gulmira , Umetalieva Nagira , Ahmedov Sevim , Antonenka Uladzimir , Myrzaliev Bakyt , Sahalchyk Evgeni , Vogel Monica , Kadyrov Abdylat , Hoffmann Harald
Published: February 2022

Background

Health care workers (HCW) are at increased risk of TB infection due to their close contact with infected patients with active TB. The objectives of the study were (1) to assess the prevalence of LTBI among HCW in the Northern Kyrgyz Republic, and (2) to determine the association of LTBI with job positions or departments.

Methods

HCWs from four TB hospitals in the Northern Kyrgyz Republic were tested with the interferon-gamma release assay (IGRA) Quantiferon-TB Gold plus (QFT) for the detection of an immune response to TB as marker of TB infection. Age was controlled for as a confounder. Univariate and multivariable analysis were performed using logistic regression to assess the association of the risk factors (job position, and department) with having a QTF positive result. Firth’s penalized-likelihood estimates were used to account for the small-sample size. Pairwise comparisons using the Bonferroni correction (conservative) and comparisons without adjusting for multiple comparisons (unadjusted) were used to identify the categories where differences occurred.

Results

QFT yielded valid results for 404 HCW, with 189 (46.7%) having a positive test. In the National Tuberculosis Center there was an increased odds to have a positive QFT test for the position of physician (OR = 8.7, 95%, CI = 1.2–60.5, p = 0.03) and laboratory staff (OR = 19.8, 95% CI = 2.9–135.4, p < 0.01) when administration staff was used as the baseline. When comparing departments for all hospitals combined, laboratories (OR 7.65; 95%CI 2.3–24.9; p < 0.001), smear negative TB (OR 5.90; 95%CI 1.6–21.8; p = 0.008), surgery (OR 3.79; 95%CI 1.3–11.4; p = 0.018), and outpatient clinics (OR 3.80; 95%CI 1.1–13.0; p = 0.03) had higher odds of a positive QFT result than the admin department. Fifteen of the 49 HCW with follow-up tests converted from negative to positive at follow-up testing.

Conclusions

This is the first report on prevalence and risk factors of LTBI for HCW in the Kyrgyz republic, and results indicate there may be an increased risk for LTBI among physicians and laboratory personnel. Further research should investigate gaps of infection control measures particularly for physicians and laboratory staff and lead to further improvement of policies.
Parental experiences and breastfeeding outcomes of early support to new parents from family health care centres—a mixed method study
Authors: Saade Sandra , Flacking Renée , Ericson Jenny
Published: February 2022

Background

Early parenthood is a sensitive period for parents. Parents may feel uncertain about their new roles and unsure about where to find trusted information and support. The aim of this study was to explore the association between breastfeeding and early home visits and a proactive telephone support intervention and to describe parental experiences.

Method

This study was conducted as a mixed method study with a convergent design using qualitative data from the written comments of parents, and the quantitative data consisted of demographics, breastfeeding, and Likert questions about parents’ satisfaction with the early home visit and telephone support. Historic control (2017–2018) and intervention (2019–2020) data were collected from one family health care centre, and control (2019–2020) data were collected from another family health care centre.

Results

In total, 838 infants, 42 mothers and 38 fathers contributed to the data in the study. The intervention group had a statistically significantly earlier home visit than the control groups. Early home visits and proactive telephone support to parents with newborn infants were not associated with breastfeeding outcomes up to six months after birth, but we could not exclude the possibility that this was a consequence of our observational study design. However, the early home visit was appreciated by the parents where they received both practical and emotional support.

Conclusions

Although the intervention was not associated with breastfeeding, the parents appreciated the service. This shows the importance of continuing to investigate how and which support parents of newborn infants need and the effects of such support, including interventions to provide optimal support to facilitate continued breastfeeding.
A 10-year retrospective study of lung cancer in Uganda
Authors: Bogere Naghib , Bongomin Felix , Katende Andrew , Omaido Blair Andrew , Namukwaya Elizabeth , Mayanja-Kizza Harriet , Walusansa Victoria
Published: February 2022

Background

Lung cancer is a leading cause of cancer-related deaths in Uganda. In this study, we aimed to describe the baseline characteristics and survival of patients with lung cancer at the Uganda Cancer Institute (UCI).

Methods

We retrospectively reviewed medical records of all patients with a histological diagnosis of lung cancer registered at UCI between January 2008 and August 2018. Data on demographic, clinical, and treatment characteristics, and vital status were abstracted and analyzed. Patients with undocumented vital status on the medical records were contacted through phone calls. We determined survival as time from histological diagnosis to death. The Kaplan-Meier survival analysis was performed to estimate the median survival time and the 5-year overall survival rate.

Results

Of the 207 patients enrolled, 56.5% (n = 117) were female, median age was 60 years (range: 20–94), 78.7% (n = 163) were never-smokers and 18 (8.7%) were living with HIV. Presumptive anti-tuberculosis treatment was given to 23.2% (n = 48). Majority had non-small cell lung cancer (96.6%,n = 200) with 74.5% (n = 149) adenocarcinoma and 19% (n = 38) squamous cell carcinoma. All had advanced (stage III or IV) disease with 96.1% (n = 199) in stage IV. Chemotherapy (44.9%,n = 93) and biological therapy (34.8%,n = 72) were the commonest treatments used. Overall survival at 6 months, 1-, 2- and 5-years was 41.7, 29.7, 11.8, and 1.7%, respectively. The median survival time of 4.4 months was not statistically significantly different between participants with NSCLC or SCLC (4.5 versus 3.9 months,p = .335).

Conclusion

In Uganda, adenocarcinoma is the predominant histologic subtype of lung cancer and patients are predominantly females, and non-smokers. Patients present late with advanced disease and poor overall survival. Public awareness should be heightened to facilitate early detection and improve outcomes.
Aggravation of retinal hard exudates after intravitreal anti-vascular endothelial growth factor therapy for cystoid macular edema and the risk factors: a retrospective study
Authors: Shi Rui , Guo Zhonglan , Yang Xiangxiang , Che Xuanyi
Published: February 2022

Background/aims

To evaluate retinal hard exudates (HEs) progression in patients with cystoid macular edema (CME) secondary to diabetic retinopathy (DR) or branch retinal vascular occlusion (BRVO) after intravitreal injections of ranibizumab (IVR) treatment and identify the risk factors for the deterioration of HEs.

Methods

This retrospective study enrolled 288 eyes with center-involving CME secondary to DR or BRVO from 288 patients (one eye per patient). All patients were treated with three loading doses of ranibizumab intravitreally at a monthly interval. The morphologic features of HEs were observed, and the HEs areas were quantified using a semi-automatic method at baseline, 1 month after the first dose of IVR and 1 month after the third dose of IVR therapy. HEs progression was defined as having a > =2-grade increase in the HEs severity scale. The best-corrected vision acuity (BCVA) and alterations in HEs areas were compared between DR and BRVO groups. Andlogistic regression analyseswere used to identify the risk factors for HEs exacerbation.

Results

Morphological changes of retinal HEs occurred in all eyes after IVR therapy, although HEs area was not significantly changed in some eyes. DR group has a higher percentage of eyes with progressed HEs area than the BRVO groups (34.9% vs. 21.8%,P = 0.019) 1 month after the first dose of IVR. Both DR and BRVO groups had a decreased percentage of enlarged HEs 1 month after the third injection, but the DR group is still higher than the BRVO group (17.1% vs. 8.4%,P = 0.027). At baseline, there was no correlation between VA and HEs areas. After the first and third doses of IVR, there still was no consistent correlation between HEs severity and change in VA over time. Furthermore, CME with subretinal fluid (SRF) is associated with a higher risk of HEs progression (P = 0.001). Long CME duration and high serum low-density lipoprotein cholesterol (LDL-C) level were identified as risk factors for HEs progression following IVR treatment in bothunivariableandmultivariableregression analyses (Odds ratio (OR) = 1.88,P = 0.012 and OR = 1.14,P = 0.021, respectively).

Conclusions

Alterations in the area of retinal HEs are widely observed after IVR treatment for CME. The eyes with CME secondary to DR have a higher percentage of progressed HEs than the BRVO eyes. DME with SRF, extended duration of CME, and high LDL-C level are potential risk factors of deteriorated HEs after IVR treatment.
Children’s screen use and school readiness at 4-6 years: prospective cohort study
Authors: Vanderloo Leigh M. , Janus Magdalena , Omand Jessica A. , Keown-Stoneman Charles D.G. , Borkhoff Cornelia M. , Duku Eric , Mamdani Muhammad , Lebovic Gerald , Parkin Patricia C. , Simpson Janis Randall , Tremblay Mark S. , Maguire Jonathon L. , Birken Catherine S.
Published: February 2022

Background

The primary aim of this study was to determine if screen use in early childhood is associated with overall vulnerability in school readiness at ages 4 to 6 years, as measured by the Early Development Instrument (EDI). Secondary aims were to: (1) determine if screen use was associated with individual EDI domains scores, and (2) examine the association between screen use and EDI domains scores among a subgroup of high screen users.

Methods

This prospective cohort study was carried out using data from young children participating in a large primary care practice-based research network in Canada. Logistic regression analyses were run to investigate the association between screen use and overall vulnerability in school readiness. Separate linear regression models examined the relationships between children’s daily screen use and each separate continuous EDI domain.

Results

A total of 876 Canadian participants participated in this study. Adjusted logistic regression revealed an association between increased screen use and increased vulnerability in school readiness (p = 0.05). Results from adjusted linear regression demonstrated an association between higher screen use and reduced language and cognitive development domain scores (p = 0.004). Among high screen users, adjusted linear regression models revealed associations between increased screen use and reduced language and cognitive development (p = 0.004) and communication skills and general knowledge domain scores (p = 0.042).

Conclusions

Screen use in early childhood is associated with increased vulnerability in developmental readiness for school, with increased risk for poorer language and cognitive development in kindergarten, especially among high users.
Invasive meningococcal disease in older adults in North America and Europe: is this the time for action? A review of the literature
Authors: Guedes Sandra , Bertrand-Gerentes Isabelle , Evans Keith , Coste Florence , Oster Philipp
Published: February 2022

Background

Neisseria meningitidis is an encapsulated Gram-negative diplococcus that asymptomatically colonises the upper respiratory tract in up to 25% of the population (mainly adolescents and young adults). Invasive meningococcal disease (IMD) caused by Neisseria meningitidis imposes a substantial public health burden,. The case fatality rate (CFR) of IMD remains high. IMD epidemiology varies markedly by region and over time, and there appears to be a shift in the epidemiology towards older adults. The objective of our review was to assess the published data on the epidemiology of IMD in older adults (those aged ≥ 55 years)in North America and Europe. Such information would assist decision-makers at national and international levels in developing future public health programmes for managing IMD.

Methods

A comprehensive literature review was undertaken on 11 August 2020 across three databases: EMBASE, Medline and BIOSIS. Papers were included if they met the following criteria: full paper written in the English language; included patients aged ≥ 56 years; were published between 1/1/2009 11/9/2020 and included patients with either suspected or confirmed IMD or infection with N. meningitidis in North America or Europe. Case studies/reports/series were eligible for inclusion if they included persons in the age range of interest. Animal studies and letters to editors were excluded. In addition, the websites of international and national organisations and societies were also checked for relevant information.

Results

There were 5,364 citations identified in total, of which 76 publications were included in this review. We identified that older adults with IMD were mainly affected by serogroups W and Y, which are generally not the predominant strains in circulation in most countries. Older adults had the highest CFRs, probably linked to underlying comorbidities and more atypical presentations hindering appropriate timely management. In addition, there was some evidence of a shift in the incidence of IMD from younger to older adults.

Conclusions

The use of meningococcal vaccines that include coverage against serogroups W and Y in immunization programs for older adults needs to be evaluated to inform health authorities’ decisions of the relative benefits of vaccination and the utility of expanding national immunization programmes to this age group.
Leukotriene B4 loaded in microspheres regulate the expression of genes related to odontoblastic differentiation and biomineralization by dental pulp stem cells
Authors: da Silva Francine Lorencetti , de Campos Chaves Lamarque Giuliana , de Oliveira Fernanda Maria Machado Pereira Cabr , Nelson-Filho Paulo , da Silva Léa Assed Bezerra , Segato Raquel Assed Bezerra , Faccioli Lúcia Helena , Paula-Silva Francisco Wanderley Garcia
Published: February 2022

Background

Leukotriene B4 (LTB4) is a potent lipid mediator that stimulate the immune response. Because dental pulp inflammation and dentin repair are intrinsically related responses, the aim of this research was to investigate the potential of LTB4 in inducing differentiation of dental pulp stem cells.

Methods

Microspheres (MS) loaded with LTB4 were prepared using an oil emulsion solvent extraction evaporation process and sterility, characterization, efficiency of LTB4 encapsulation and in vitro LTB4 release assay were investigated. Mouse dental pulp stem cells (OD-21) were stimulated with soluble LTB4 or MS loaded with LTB4 (0.01 and 0.1 μM). Cytotoxicity and cell viability was determined by lactate dehydrogenase and methylthiazol tetrazolium assays. Gene expression were measured by quantitative reverse transcription polymerase chain reaction after 3, 6, 24, 48 and 72 h. Mineralized nodule formation was assessed after 28 days of OD-21 cell stimulation with LTB4 in mineralized media or not. Groups were compared using one-way ANOVA test followed by Dunnett’s post-test (α = 0.05).

Results

Treatment with LTB4 or MS loaded with LTB4 (0.01 and 0.1 µm-μM) were not cytotoxic to OD-21 cells. Treatment with LTB4 modulated the expression of the Ibsp (integrin binding sialoprotein) and Runx2 (runt-related transcription factor 2) genes differently depending on the experimental period analyzed. Interestingly LTB4 loaded in microspheres (0.1 μM) allowed long term dental pulp cell differentiation and biomineralization.

Conclusion

LTB4, soluble or loaded in MS, were not cytotoxic and modulated the expression of the Ibsp and Runx2 genes in cultured OD-21 cells. When LTB4 was incorporated into MS, odontoblast differentiation and mineralization was induced in long term culture.
Impact of web-based health education on HPV vaccination uptake among college girl students in Western and Northern China: a follow-up study
Authors: Zhang Xi , Chen Hui , Zhou Jing , Huang Qian , Feng Xiao-yu , Li Jing
Published: February 2022

Objective

To investigate the effect of a web-based educational intervention on changing female college students’ willingness and uptake of human papillomavirus (HPV) vaccines, and factors associated with HPV vaccination acceptance in Western and Northern China.

Methods

A web-based cluster randomized controlled trial was conducted in Western and Northern China from February to May 2020. A total of 967 female freshmen were recruited from two universities through convenience sampling, stratified sampling (liberal arts or sciences), and cluster sampling. Eligible students were randomized into intervention and control group with a 1:1 allocation ratio. The intervention group received seven days of web-based health education regarding HPV and HPV vaccines, whereas the control group received non-HPV-related materials. All students were asked to complete a post-intervention questionnaire to measure their awareness, uptake, and willingness to receive HPV vaccination at 7-day and one-month intervals. The chi-square test and Student’s t-test were employed to examine the differences between the intervention and control groups for categorical and continuous data. Logistic regressions were used to analyze factors associated with vaccination intentions.

Results

Nine hundred forty-six female freshmen aged 18.99 ± 0.63 years were enrolled in the study, with 532 in the intervention group and 414 in the control group. Prior to the intervention, 63.8%, 66.3%, and 60.8% of students had heard of HPV, HPV-related diseases, and HPV vaccines, respectively. Only 2.2% of students reported being vaccinated, but 33.0% were willing to be vaccinated against HPV. After seven days of education, students in the intervention group exhibited higher awareness (p < 0.001) and knowledge scores (5.13 ± 1.23 vs. 3.10 ± 1.99, p < 0.001) than those in the control group. Similarly, in the intervention groups, willingness to be vaccinated against HPV was significantly higher than in the control groups (p < 0.001). The high cost (57.7%) and concerns about adverse events (56.0%) were the main reasons female college students did not accept HPV vaccines. School location in urban areas, parents’ higher education backgrounds, history of HPV vaccination counseling, history of sexual behavior, and having heard of HPV vaccines were associated with a higher willingness to be vaccinated.

Conclusion

Female college students’ HPV vaccination uptake is insufficient, and they have minimal detailed knowledge about HPV and its vaccines. Web-based health education on HPV vaccines is an easy, feasible, and effective way to improve the awareness and acceptance of HPV vaccination among female college students, but it has limited effect on HPV vaccination uptake.
Keeping nurses in nursing: a qualitative study of German nurses’ perceptions of push and pull factors to leave or stay in the profession
Authors: Roth Catharina , Wensing Michel , Breckner Amanda , Mahler Cornelia , Krug Katja , Berger Sarah
Published: February 2022

Background

The increasing nursing shortages worldwide has focused attention on the need to find more effective ways to recruit and retain nurses. The aim of this study was to gain understanding of factors that keep German nurses in nursing and explore their perceptions of factors that contribute to nurses leaving or staying in the profession.

Methods

An explorative qualitative study was undertaken at four different hospitals (two university hospitals and two public hospitals) in Baden-Wuerttemberg, a state in South Germany. Semi-structured face-to-face or telephone interviews were conducted with 21 state-qualified nurses who had graduated from a German nursing program. Each interview was pseudonymized and transcribed. Transcripts were coded according to Qualitative Content Analysis with data structured into themes and subthemes. The study was reported according to the Consolidated Criteria for Reporting Qualitative Studies (COREQ) checklist for qualitative research.

Results

Two themes emerged from the analysis and each theme had several subthemes: a) PUSH FACTORS i.e. factors that may push nurses to consider leaving the profession included limited career prospects, generational barriers, poor public image of nursing, and workplace pressures; b) PULL FACTORS i.e. factors that nurses wished for and could keep them in the profession included professional pride, improved remuneration, recognition of nursing, professionalisation, and improving the image of nursing as a profession.

Conclusion

The decision to leave or stay in nursing is influenced by a complex range of dynamic push and pull factors. Nurse Managers responsible for stabilizing the workforce and maintaining their health system will continue to have to navigate challenges until working conditions, appropriate wages and career development opportunities are addressed. A key to tackling nursing shortages may be focusing on pull factors and nurse managers listening in particular to the perspectives of junior nurses directly involved in patient care, as giving them opportunity to further develop professionally, reinforcing a strong and supportive workplace relationships, paying an appropriate salary, and improving the public image of nursing profession.

Registration number

The study has been prospectively registered (27 June 2019) at the German Clinical Trial Register (DRKS00017465).
Combination treatment of docetaxel with caffeic acid phenethyl ester suppresses the survival and the proliferation of docetaxel-resistant prostate cancer cells via induction of apoptosis and metabolism interference
Authors: Fu Yu-Ke , Wang Bi-Juan , Tseng Jen-Chih , Huang Shih-Han , Lin Ching-Yu , Kuo Ying-Yu , Hour Tzyh-Chyuan , Chuu Chih-Pin
Published: February 2022

Background

Docetaxel has been approved by USFDA as a first-line treatment for castration-resistant prostate cancer (CRPC) patients. Patients receiving androgen deprivation therapy along with docetaxel result in superior survival, lower serum prostate specific antigen (PSA) level, and better quality of life. However, a significant proportion of these patients ultimately develop resistance to docetaxel within months. Caffeic acid phenethyl ester (CAPE), one of the main bioactive components extracted from the propolis, has been reported to be effective for repressing the tumor growth, the migration and invasion of prostate cancer (PCa) cells, as well as the downstream signaling and stability of androgen receptor (AR). We hence determined if combination treatment of docetaxel with CAPE can suppress the proliferation and the survival of docetaxel-resistant PCa cells.

Methods

We established docetaxel-resistant PC/DX25 and DU/DX50 CRPC cell lines from PC-3 and DU-145 human PCa cells, respectively. Proliferation assay, MTT assay, flow cytometry with Annexin V staining, Comet Assay, and nude mice xenograft model were applied to determine the effects of combination treatment on cell proliferation and survival of the docetaxel-resistant PCa cells. Micro-Western Array (MWA) and qRT-PCR were used to investigate the molecular mechanism lying underneath.

Results

Combination treatment effectively suppressed the proliferation, survival and tumor growth of docetaxel-resistant PCa cells both in vitro and in nude mice. Comet assay and flow cytometry indicated that combination treatment induced apoptosis in docetaxel-resistant PCa cells. MWA and Western blotting assay revealed that combination treatment suppressed protein expression of Bcl-2, AKT2, c-Myc, apoptosis and caspase activation inhibitor (AVEN), pyruvate kinase M2 (PKM2) but increased protein expression of Bax, caspase 3, cytochrome c, glucose-6-phosphate dehydrogenase (G6PD) and acylglycerol kinase (AGK). Overexpression of Bcl-2 in the docetaxel-resistant PCa cells enhanced cell proliferation of docetaxel-resistant PCa cells under combination treatment. Analysis with qRT-PCR suggested that combination treatment decreased cholesterol biosynthesis genes DHCR24 (24-dehydrocholesterol reductase) and LSS (lanosterol synthase) but increased genes involved in glycolysis and TCA cycle.

Conclusions

Combination treatment of docetaxel with CAPE effectively suppressed the proliferation and survival of docetaxel-resistant PCa cells via inhibition of Bcl-2 and c-Myc as well as induction of metabolism interference. Combination treatment can be beneficial for patients with docetaxel-resistant PCa.
B cell-dependent EAE induces visual deficits in the mouse with similarities to human autoimmune demyelinating diseases
Authors: Joly Sandrine , Mdzomba Julius Baya , Rodriguez Léa , Morin Françoise , Vallières Luc , Pernet Vincent
Published: February 2022

Background

In the field of autoimmune demyelinating diseases, visual impairments have extensively been studied using the experimental autoimmune encephalomyelitis (EAE) mouse model, which is classically induced by immunization with myelin oligodendrocyte glycoprotein peptide (MOG35–55). However, this model does not involve B cells like its human analogs. New antigens have thus been developed to induce a B cell-dependent form of EAE that better mimics human diseases.

Methods

The present study aimed to characterize the visual symptoms of EAE induced with such an antigen called bMOG. After the induction of EAE with bMOG in C57BL/6J mice, visual function changes were studied by electroretinography and optomotor acuity tests. Motor deficits were assessed in parallel with a standard clinical scoring method. Histological examinations and Western blot analyses allowed to follow retinal neuron survival, gliosis, microglia activation, opsin photopigment expression in photoreceptors and optic nerve demyelination. Disease effects on retinal gene expression were established by RNA sequencing.

Results

We observed that bMOG EAE mice exhibited persistent loss of visual acuity, despite partial recovery of electroretinogram and motor functions. This loss was likely due to retinal inflammation, gliosis and synaptic impairments, as evidenced by histological and transcriptomic data. Further analysis suggests that the M-cone photoreceptor pathway was also affected.

Conclusion

Therefore, by documenting visual changes induced by bMOG and showing similarities to those seen in diseases such as multiple sclerosis and neuromyelitis optica, this study offers a new approach to test protective or restorative ophthalmic treatments.
Cervical non-fusion using biomimetic artificial disc and vertebra complex: technical innovation and biomechanics analysis
Authors: Li Jialiang , OuYang Pengrong , He Xijing , Wei Xinyu , Sun Zhongwei , Dong Hui , Wen Zhijing , Wang Yibin , Gu Pengzhen , Lu Teng , Liu Ning , Li Haopeng
Published: February 2022

Background

Changes in spinal mobility after vertebral fusion are important factors contributing to adjacent vertebral disease (ASD). As an implant for spinal non-fusion, the motion-preserving prosthesis is an effective method to reduce the incidence of ASD, but its deficiencies hamper the application in clinical. This study designs a novel motion-preserving artificial cervical disc and vertebra complex with an anti-dislocation mechanism (MACDVC-AM) and verifies its effect on the cervical spine.

Methods

The MACDVC-AM was designed on the data of healthy volunteers. The finite element intact model, fusion model, and MACDVC-AM model were constructed, and the range of motion (ROM) and stress of adjacent discs were compared. The biomechanical tests were performed on fifteen cervical specimens, and the stability index ROM (SI-ROM) were calculated.

Results

Compared with the intervertebral ROMs of the intact model, the MACDVC-AM model reduced by 28–70% in adjacent segments and increased by 26–54% in operated segments, but the fusion model showed the opposite result. In contrast to the fusion model, the MACDVC-AM model diminished the stress of adjacent intervertebral discs. In biomechanical tests, the MACDVC-AM group showed no significant difference with the ROMs of the intact group (p > 0.05). The SI-ROM of the MACDVC-AM group is negative but close to zero and showed no significant difference with the intact group (p > 0.05).

Conclusions

The MACDVC-AM was successfully designed. The results indicate that the MACDVC-AM can provide physiological mobility and stability, reduce adjacent intervertebral compensatory motion, and alleviate the stress change of adjacent discs, which contributes to protect adjacent discs and reduce the occurrence of ASD.
A complex pheotype in a girl with a novel heterozygous missense variant (p.Ile56Phe) of the GNAS gene
Authors: Cavarzere Paolo , Gastaldi Andrea , Elli Francesca Marta , Gaudino Rossella , Peverelli Erika , Brugnara Milena , Thiele Susanne , Granata Francesca , Mantovani Giovanna , Antoniazzi Franco
Published: February 2022

Background

GNAS is a complex gene that encodes Gsα, a signaling protein that triggers a complex network of pathways. Heterozygous inactivating mutations in Gsα-coding GNAS exons cause hormonal resistance; on the contrary, activating mutations in Gsα result in constitutive cAMP stimulation. Recent research has described a clinical condition characterized by both gain and loss of Gsα function, due to a heterozygous de novo variant of the maternal GNAS allele.

Patients and methods

We describe a girl with a complex combination of clinical signs and a new heterozygous GNAS variant. For the molecular analysis of GNAS gene, DNA samples of the proband and her parents were extracted from their peripheral blood samples. In silico analysis was performed to predict the possible in vivo effect of the detected novel genetic variant. The activity of Gsα protein was in vitro analyzed from samples of erythrocyte membranes, recovered from heparinized blood samples.

Results

We found a new heterozygous missense c.166A > T—(p.Ile56Phe) GNAS variant in exon 2, inherited from the mother that determined a reduced activity of 50% of Gsα protein function. The analysis of her parents showed a 20–25% reduction in Gsα protein activity in the mother and a normal function in the father. Clinically our patient presented a multisystemic disorder characterized by hyponatremia compatible with a nephrogenic syndrome of inappropriate antidiuresis, subclinical hyperthyroidism, subclinical hypercortisolism, precocious thelarche and pubarche and congenital bone abnormalities.

Conclusions

This is the first time that the new variant c.166A > T (p.Ile56Phe) on exon 2 of GNAS gene, originated on maternal allele, has been described as probable cause of a multisystemic disorder. Although the mutation is associated with a reduced activity of the function of Gsα protein, this unusual phenotype on the contrary suggests a mild functional gain.
Optogenetics: implications for Alzheimer’s disease research and therapy
Authors: Mirzayi Parsa , Shobeiri Parnian , Kalantari Amirali , Perry George , Rezaei Nima
Published: February 2022

Alzheimer’s disease (AD), a critical neurodegenerative condition, has a wide range of effects on brain activity. Synaptic plasticity and neuronal circuits are the most vulnerable in Alzheimer’s disease, but the exact mechanism is unknown. Incorporating optogenetics into the study of AD has resulted in a significant leap in this field during the last decades, kicking off a revolution in our knowledge of the networks that underpin cognitive functions. In Alzheimer's disease, optogenetics can help to reduce and reverse neural circuit and memory impairments. Here we review how optogenetically driven methods have helped expand our knowledge of Alzheimer's disease, and how optogenetic interventions hint at a future translation into therapeutic possibilities for further utilization in clinical settings. In conclusion, neuroscience has witnessed one of its largest revolutions following the introduction of optogenetics into the field.
YTHDF1 promotes breast cancer progression by facilitating FOXM1 translation in an m6A-dependent manner
Authors: Chen Hengyu , Yu Yuanhang , Yang Ming , Huang Haohao , Ma Shenghui , Hu Jin , Xi Zihan , Guo Hui , Yao Guojie , Yang Liu , Huang Xiaoqing , Zhang Feng , Tan Guanghong , Wu Huangfu , Zheng Wuping , Li Lei
Published: February 2022

Background

N6-methyladenosine (m6A) is the most common post-transcriptional modification at the RNA level. However, the exact molecular mechanisms of m6A epigenetic regulation in breast cancer remain largely unknown and need to be fully elucidated.

Methods

 The integrating bioinformatics analyses were used to screen clinical relevance and dysregulated m6A “reader” protein YTHDF1 in breast cancer from TCGA databases, which was further validated in a cohort of clinical specimens. Furthermore, functional experiments such as the CCK-8 assay, EdU assay, wound healing assay, transwell invasion assay and cell cycle assay were used to determine the biological role of YTHDF1 in breast cancer. RIP, m6A-IP, and CLIP assays were used to find the target of YTHDF1 and further verification by RT-qPCR, western blot, polysome profiling assay. The protein–protein interaction between YTHDF1 and FOXM1 was detected via co-immunoprecipitation.

Results

Our study showed that YTHDF1 was overexpressed in breast cancer cells and clinical tissues specimens. At the same time, the high expression level of YTHDF1 was positively correlated with tumor size, lymph node invasion, and distant metastasis in breast cancer patients. YTHDF1 depletion repressed the proliferation, invasion and epithelial-mesenchymal transformation (EMT) and induced G0/G1 phase cell cycle arrest of breast cancer cells in vitro and in vivo. We also demonstrated that FOXM1 is a target of YTHDF1. Through recognizing and binding to the m6A-modified mRNA of FOXM1, YTHDF1 accelerated the translation process of FOXM1 and promoted breast cancer metastasis. Whereas overexpression of FOXM1 in breast cancer cells partially counteracted the tumor suppressed effects caused by YTHDF1 silence, which further verified the regulatory relationship between YTHDF1 and FOXM1.

Conclusion

Our study reveals a novel YTHDF1/FOXM1 regulatory pathway that contributes to metastasis and progression of breast cancer, suggesting that YTHDF1 might be applied as a potential biomarker and therapeutic target. That also advances our understanding of the tumorigenesis for breast cancer from m6A epigenetic regulation.
Looking into the past to build the future: food, memory, and identity in the indigenous societies of Puebla, Mexico
Authors: Lugo-Morin Diosey Ramon
Published: February 2022

Food memory has been determinant in the survival of social groups, the causes of its activation are varied (e.g. feelings, identity, need or challenge) and it is transmitted from generation to generation. These interactions have given rise to an ethnic food heritage that responds to cultural processes and territorial specificities. It is in this logic that this study is proposed, which aims to explore the dynamics between food, memory, and identity of two ethnic groups in the state of Puebla in Mexico in a context of health disruption. The experience of these two groups shows how food identity and memory is particularly strategic in the face of adversity, as is currently the case with the COVID-19 pandemic.
A preliminary evaluation of some language aspects in normal bilingual Egyptian kindergarten children
Authors: Aziz Azza A. , Osman Dalia M. , Abdel Hady Aisha F. , Maged Samar
Published: February 2022

Background

Bilingualism is the phenomenon of speaking and understanding two languages. The increased representation of bilingual populations calls for in-depth studies of bilingualism. The aim of this work is to devise an assessment protocol that could help in evaluating some aspects of Arabic and English languages acquired in typically developing bilingual preschool Egyptian children as a preliminary attempt to comprehend the language profiles of both languages in the studied group. The study was conducted on 80 bilingual Egyptian preschool male and female children exposed to both Arabic and English languages. Their age ranged from 4 to 4 years and 11 months from international English schools with regular attendance and of normal Arabic language development. All were subjected to the designed Bilingual English-Arabic semantic test, and narrative assessment and their parents and teachers filled in the questionnaires addressing the variables affecting both languages’ acquisition.

Results

Bilingual English-Arabic Semantic and Narration Tests revealed that children under the study had variable development in some aspects in semantic and narration between both languages and according to their age.

Conclusions

Data gathered from the study can be considered a preliminary nucleus for identification of the bilingual children’s normative data to be able to pick up the cases with language impairment of bilingual children and help in making diagnostic decisions and planning for future intervention.