bluuebunny/crossref_metadata_2025 huggingface dataset:
The role of oral appliance therapy in obstructive sleep apnoea
Authors: Johal Ama , Hamoda Mona M. , Almeida Fernanda R. , Marklund Marie , Tallamraju Harishri
Published: June 2023

There is now widespread recognition within the world of sleep medicine of the increasing importance of dental sleep medicine and, in particular, the role of oral appliance therapy (OAT) in the management of adults with obstructive sleep apnoea (OSA). For the purpose of this review, the term OAT refers to a custom-made intra-oral appliance, which acts to posture the mandible in a forward and downward direction, away from its natural resting position. Whilst nasally applied continuous positive airway pressure remains the “gold standard” in nonsurgical OSA management, OAT remains the recognised alternative treatment.

This review of OAT aims to provide an evidence-based update on our current understanding of their mode of action, exploring the potential anatomical and physiological impact of their use in preventing collapse of the upper airway; the current clinical practice guidelines, including the recently published National Institute of Clinical Excellence 2021 guidance, in conjunction with the American Academy of Sleep Medicine and American Academy of Dental Sleep Medicine; optimal design features, comparing the role of custom-madeversusnoncustom OAT devices and the importance of titration in achieving a dose-dependent effect; patient predictors, preference and adherence to OAT; its impact on a range of both patient- and clinician-centred health outcomes, with a comparison with CPAP; the limitations and side-effects of providing OAT; and, finally, a look at future considerations to help optimise the delivery and outcomes of OAT.
Development and validation of a screening tool for SPondyloArthritis Screening in Sub-Saharan Africa: SpASSS questionnaire
Authors: Lebughe Litite P , Westhovens R. , Nkodila A. , Malemba J. J. , de Vlam K.
Published: June 2023

Objective

To develop and validate a screening tool to identify patients with a high likelihood for Spondyloarthritis (SpA) in the Democratic Republic of the Congo (DR Congo).

Methods

The development of the SpA Screening questionnaire in Sub Saharian Africa (SpASSS) questionnaire followed 3 steps: The item generation was carried out by a systematic literature review according to the PRISMA guidelines on the clinical manifestations of SpA, interviewing clinical experts and the classification criteria for Spondyloarthritis. The candidate questions were tested in a population of 50 consecutive patients with confirmed diagnosis of spondyloarthritis, in a control population of rheumatic disease excluding SpA and in a group of 200 non-rheumatic participants, randomly chosen in the general population for question reduction and validation. Descriptive statistical analyses were performed to assess socio-demographic characteristics and response distribution for each item. Their diagnostic performance was investigated using ROC curves. For validation, principal component analysis was performed using factor analysis. Referral strategy score for SpA was determined by adjusted Cronbach’s alpha coefficient.

Results

Mean ± SD age of SpA cases was 41.8 ± 14.4 years, 56% were men compared to diseased controls 60.0 ± 12.5 years, 28.7% men (p < 0.001). 14/20 items showed a statistically significant difference (p < 0.05) between SpA cases and control groups. All items were factorable and 6 components were identified. Only the two first components (C1 with 8 items, C2 with 3 items) showed a significant threshold for reliability in detection of suspected SpA with a Cronbach's alpha of 0.830 and 0.708. All validated items of these two components showed the global reliability threshold with α-adjusted Cronbach calculated at 66.9%. The performance for correctly screening SpA was demonstrated with an area under the curve of 0.938 (0.884–0.991) and 0.794 (0.728–0.861) for C1 and C2 respectively.

Conclusions

This validation and item reduction of the SpASSS questionnaire for SpA might identify patients to refer for case ascertainment and will help conducting future epidemiological and clinical studies in the DR Congo.

Strengths and limitations of this study

• To the best of our knowledge, this is the first study in Sub-Saharan Africa based on local data to develop a screening tool for SpA in the population for epidemiological and clinical use.

• Referral strategies based on context-specific data are necessary to provide accurate case definition and epidemiological data, thus reducing methodological bias.

• In the SpA group, no discrimination was made regarding SpA subtypes, disease duration, activity and severity.
Factors associated with loneliness in immigrant and Canadian-born older adults in Ontario, Canada: a population-based study
Authors: Lu Mindy , Bronskill Susan E. , Strauss Rachel , Boblitz Alexa , Guan Jun , Im James H.B. , Rochon Paula A. , Gruneir Andrea , Savage Rachel D.
Published: June 2023

Background

While loneliness is common in older adults, some immigrant groups are at higher risk. To inform tailored interventions, we identified factors associated with loneliness among immigrant and Canadian-born older adults living in Ontario, Canada.

Methods

We conducted a cross-sectional analysis of 2008/09 data from the Canadian Community Health Survey (Healthy Aging Cycle) and linked health administrative data for respondents 65 years and older residing in Ontario, Canada. Loneliness was measured using the Three-Item Loneliness Scale, with individuals categorized as ‘lonely’ if they had an overall score of 4 or greater. For immigrant and Canadian-born older adults, we developed separate multivariable logistic regression models to assess individual, relationship and community-level factors associated with loneliness.

Results

In a sample of 968 immigrant and 1703 Canadian-born older adults, we found a high prevalence of loneliness (30.8% and 34.0%, respectively). Shared correlates of loneliness included low positive social interaction and wanting to participate more in social, recreational or group activities. In older immigrants, unique correlates included: widowhood, poor health (i.e., physical, mental and social well-being), less time in Canada, and lower neighborhood-level ethnic diversity and income. Among Canadian-born older adults, unique correlates were: female sex, poor mental health, weak sense of community belonging and living alone. Older immigrant females, compared to older immigrant males, had greater prevalence (39.1% vs. 21.9%) of loneliness.

Conclusions

Although both groups had shared correlates of loneliness, community-level factors were more strongly associated with loneliness in immigrants. These findings enhance our understanding of loneliness and can inform policy and practice tailored to immigrants.
Post-infection functional gastrointestinal disorders following coronavirus disease-19: a prospective follow-up cohort study
Authors: Zhang Daya , Chen Chen , Xie Yunqian , Zeng Fan , Chen Shiju , Chen Runxiang , Zhang Xiaodong , Huang Shimei , Li Da , Bai Feihu
Published: June 2023

Background

Acute gastrointestinal infections can lead to post-infectious irritable bowel syndrome (PI-IBS). Moreover, coronavirus disease (COVID-19) is related to long-term gastrointestinal sequelae. In this study, the frequency, disease spectrum, and risk factors for post-infection functional gastrointestinal disease (PI-FGID) in COVID-19 patients and healthy controls were prospectively examined.

Methods

Validated Rome III and Rome IV questionnaires and limited objective assessment were used to assess the incidence of PI-FGID in 190 COVID-19 patients, and 160 healthy controls prospectively followed for 1, 3, and 6 months.

Results

Six(3.2%), 1(0.5%), 3(1.6%), 5(2.6%), 6(3.2%)COVID-19 patients had diarrhea, abdominal pain, constipation, dyspepsia and their overlap at 1 month, respectively, while 4(2.1%), 1(0.5%), 4(2.1%), 4(2.1%), and 6(3.2%)COVID-19 patients had diarrhea, abdominal pain, constipation, dyspepsia and their overlap at three months, respectively. Furthermore, 2(1.3%), 4(2.5%), and 3(1.9%)healthy controls developed constipation, dyspepsia, and their overlap at one month, respectively (P = 0.193), while 2(1.3%), 4(2.5%), and 2(1.3%)healthy controls developed constipation, dyspepsia and their overlap at three months, respectively (P = 0.286). FGIDs incidence was higher among COVID-19 patients(8.9%) than in healthy controls(3.1%) at 6-month follow-up (P = 0.025). Moreover, 7 (3.7%), 5 (2.6%), 3 (1.6%), and 2 (1.1%) COVID-19 patients developed IBS, functional dyspepsia(FD), functional diarrhea(FDr), functional constipation(FC)at six months, respectively, while only 2 (1.3%) and 3 (1.9%) healthy controls developed IBS and FD at six months, respectively. Notably, gastrointestinal(GI)symptoms at onset were the independent risk factors for post-COVID-19 FGIDs at six months.

Conclusions

COVID-19 increases new-onset PI-FGID at six months compared with healthy controls. GI symptom at the onset of COVID-19 is an independent risk factor for post-COVID-19 FGIDs.
Clinicopathological spectrum of biopsy-proven renal diseases of patients at a single center in Sri Lanka: a cross sectional retrospective review
Authors: Muthukuda Chanaka , Suriyakumara Vindika , Sosai Cherine , Samarathunga Thilina , Laxman Maithili , Marasinghe Arjuna
Published: June 2023

Background

The clinical presentation of renal diseases can vary widely. The lack of a comprehensive national registry for Sri Lanka makes it difficult to provide a detailed record of the various clinical presentations and histopathology of renal disorders in the nation. Therefore, this study aims to provide a record of the spectrum of renal diseases in Sri Lanka.

Methods

Renal biopsies performed at the nephrology unit in Colombo South Teaching Hospital (CSTH), Sri Lanka from March 2018 to October 2019 was retrospectively studied. Indications for renal biopsy were nephrotic range proteinuria, sub nephrotic range proteinuria, acute kidney injury without obvious etiology, chronic renal disease without obvious etiology and haematuria.

Results

A total of 140 native kidney biopsies were analyzed in which majority were females (55.7%). The mean age of the population was 46 ± 15.3 years. The most common indications for renal biopsy were nephrotic range proteinuria (54.3%), followed by sub-nephrotic range proteinuria (14.3%), nephrotic range proteinuria with haematuria (14.3%), sub-nephrotic range proteinuria with haematuria (9.3%), AKI without known cause (4.3%), and CKD without known cause (3.6%). The leading histopathological diagnoses were FSGS (22.1%), lupus nephritis (20%), PSGN (17.1%), DN (12.1%), HTN (9.3%), MCD (6.4%), IgA nephropathy (5.7%), IN (4.3%), vasculitis (2.1%), and MGN (0.7%).

Conclusions

The most common indication for renal biopsy was nephrotic range proteinuria in our population. FSGS was the most prevalent histopathological diagnosis and the least frequent diagnosis reported was MGN. The spectrum of renal diseases could differ according to the study location and it changes over time. Therefore, a renal biopsy registry is needed for documenting the changing disease pattern in Sri Lanka.
Clinical and genetic features of a case with juvenile onset sandhoff disease
Authors: Yin Jin-Hui , Hu Wen-Zheng , Huang Yue
Published: June 2023

Background

Sandhoff disease (SD) is a rare neurological disease with high clinical heterogeneity. SD in juvenile form is much rarer and it is often misdiagnosed in clinics. Therein, it is necessary to provide more cases and review the literature on juvenile onset SD.

Case presentation

A 14 years-old boy with eight years of walking difficulties, and was ever misdiagnosed as spinocerebellar ataxia. We found this patient after genetic testing carried rs201580118 and a novel gross deletion in HEXB (g.74012742_74052694del). Through review the literature, we found that was the first gross deletion identified at the 3’end of HEXB, associated with juvenile onset SD from China.

Conclusion

This case expanded our knowledge about the genotype and phenotype correlations in SD. Comprehensive genetic testing is important for the diagnosis of unexplained ataxia.
An increased risk of pulmonary hypertension in patients with combined pulmonary fibrosis and emphysema: a meta-analysis
Authors: Ni Hangqi , Wei Yuying , Yang Liuqing , Wang Qing
Published: June 2023

Background and aim

Pulmonary hypertension (PH) is a common complication of combined pulmonary fibrosis and emphysema (CPFE). Whether the incidence of PH is increased in CPFE compared with pure pulmonary fibrosis or emphysema remains unclear. This meta-analysis aimed to evaluate the risk of PH in patients with CPFE compared to those with IPF or COPD/emphysema.

Methods

We searched the PubMed, Embase, Cochrane Library, and CNKI databases for relevant studies focusing on the incidence of PH in patients with CPFE and IPF or emphysema. Pooled odds ratios (ORs) and standard mean differences (SMD) with 95% confidence intervals (95% CIs) were used to evaluate the differences in the clinical characteristics presence and severity of PH between patients with CPFE, IPF, or emphysema. The survival impact of PH in patients with CPFE was assessed using hazard ratios (HRs).

Results

A total of 13 eligible studies were included in the meta-analysis, involving 560, 720, and 316 patients with CPFE, IPF, and emphysema, respectively. Patients with CPFE had an increased PH risk with a higher frequency of pulmonary hypertension and higher estimated systolic pulmonary artery pressure (esPAP), compared with those with IPF (OR: 2.66; 95% CI: 1.55-4.57;P < 0.01; SMD: 0.86; 95% CI: 0.52-1.19;P < 0.01) or emphysema (OR: 3.19; 95% CI: 1.42-7.14;P < 0.01; SMD: 0.73; 95% CI: 0.50-0.96;P < 0.01). In addition, the patients with CPFE combined with PH had a poor prognosis than patients with CPFE without PH (HR: 6.16; 95% CI: 2.53–15.03;P < 0.01).

Conclusions

Our meta-analysis showed that patients with CPFE were associated with a significantly higher risk of PH compared with those with IPF or emphysema alone. The presence of PH was a poor predictor of mortality.
Musculoskeletal pain post-COVID-19 in patients undergoing physical therapy in Saudi Arabia: a cross-sectional study
Authors: Alnamlah Ohoud S. , Almarwani Maha M.
Published: June 2023

Background

The COVID-19 (coronavirus disease 2019) pandemic has posed a challenge to the physical therapy service. In addition to pandemic-associated treatment interference, many recovered COVID-19 patients developed new or worsening musculoskeletal pain as a sequela of COVID-19, which has been shown to affect the musculoskeletal system. The objective of the study was to examine musculoskeletal pain post-COVID-19 in patients undergoing physical therapy in Saudi Arabia.

Methods

The design of the study was a cross-sectional study. We approached patients attending physical therapy clinics who had COVID-19. Data were collected through an electronic survey consisting of multiple-choice questions related to sociodemographic data and pain. Pain severity was rated on a 10-point numerical rating scale.

Results

A total of 85 recovered COVID-19 patients participated in this study, 30 had musculoskeletal pain prior to getting COVID-19, while 55 acquired it after. The most affected sites for musculoskeletal pain were the lower back and shoulder. Mean pain levels reported increased from 4.48 ± 2.54 pre-COVID-19 to 6.92 ± 8.06 post-COVID-19 (mean difference, 1.61 ± 2.61; t = 5.68; p < 0.0001). Mean pain scores did not associate significantly with demographic or clinical factors. Patient responses skewed toward increased pain as well as decreased activity levels after being infected with COVID-19 versus pre-COVID-19 (all p < 0.0001).

Conclusions

Recovered COVID-19 patients reported increased pain intensity and frequency, together with reduced activity levels, relative to pre-COVID-19 levels, without effects of sociodemographic or clinical characteristics.
CD79A work as a potential target for the prognosis of patients with OSCC: analysis of immune cell infiltration in oral squamous cell carcinoma based on the CIBERSORTx deconvolution algorithm
Authors: Yao Shucong , Huang Zixian , Wei Changji , Wang Yuepeng , Xiao Hongwei , Chen Shisheng , Huang Zhiquan
Published: June 2023

Objective

To analyze the abundance of infiltrating tumor immune cells in patients with oral squamous cell carcinoma (OSCC) and to search for potential targets that can predict patient prognosis.

Methods

A total of 400 samples from 210 patients with OSCC were collected using The Cancer Genome Atlas (TCGA) database. CIBERSORTx was used to evaluate the infiltration abundance of tumor immune cells. Potential target genes were searched to predict patient prognosis through case grouping, differential analysis, and enrichment analysis. Surgical excisional tissue sections of patients with oral squamous cell carcinoma admitted to the Department of Oral and Maxillofacial Surgery, Second Affiliated Hospital of Shantou University Medical College, from 2015 to 2018 were collected and followed up.

Results

The CIBERSORTx deconvolution algorithm was used to analyze the infiltration abundance of immune cells in the samples. Cases with a high infiltration abundance of naive and memory B lymphocytes improved the prognosis of OSCC patients. The prognosis of patients with low CD79A expression was significantly better than that of patients with high CD79A expression.

Conclusion

CD79A can predict the infiltration abundance of B lymphocytes in the tumor microenvironment of patients with OSCC. CD79A is a potential target for predicting the prognosis of patients with OSCC. This study provides novel ideas for the treatment of OSCC and for predicting patient prognosis.
Impact of an outpatient palliative care consultation and symptom clusters in terminal patients at a tertiary care center in Pakistan
Authors: Rafaqat Wardah , Syed Abbas Raza , Ahmed Ibrahim Munaf , Hashmi Shiraz , Jabeen Ismat , Rajwani Samina , Qamar Uqba , Waqar Muhammad Atif
Published: June 2023

Background

Patients with terminal diseases may benefit physically and psychosocially from an outpatient palliative care visit. Palliative care services are limited in Pakistan. An improved understanding of the symptom clusters present in our population is needed. The first outpatient palliative care center in Karachi, Pakistan, was established at our tertiary care institution. The primary aim of this study was to evaluate the impact of a palliative care outpatient consultation on symptom burden in patients with a terminal diagnosis. The secondary aim was to analyze the symptom clusters present in our population.

Methods

Patients with a terminal diagnosis referred to our outpatient palliative department between August 2020-August 2022 were enrolled. The Edmonton Symptom Assessment Scale (ESAS) questionnaire was administered at the initial visit and the first follow-up visit at one month. Change in symptom burden was assessed using a Wilcoxon signed ranks test. A principal component analysis with varimax rotation was performed on the symptoms reported at the initial visit to evaluate symptom clusters. The palliative performance scale (PPS) was used to measure the performance status of palliative care patients.

Results

Among the 78 patients included in this study, the average age was 59 ± 16.6 years, 52.6% were males, 99% patients had an oncological diagnosis, and the median duration between two visits was 14 (Q1-Q3: (7.0, 21.0) days. The median PPS level was 60% (Q1-Q3: 50–70). Overall, ESAS scores decreased between the two visits (6.0 (2.8, 11.0), p < 0.001) with statistically significant improvement in pain (5.0 vs. 2.5, p < 0.001), loss of appetite (5.0 vs. 4.0, p = 0.004), depression (2.0 vs. 0.0, p < 0.001), and anxiety (1.5 vs. 0.0, p = 0.032). Based on symptoms at the initial visit, 3 clusters were present in our population. Cluster 1 included anxiety, depression, and wellbeing; cluster 2 included nausea, loss of appetite, tiredness, and shortness of breath; and cluster 3 included drowsiness.

Conclusion

An outpatient palliative care visit significantly improved symptom burden in patients with a terminal diagnosis. Patients may benefit from further development of outpatient palliative care facilities to improve the quality of life in terminally ill patients.
Menstrual hygiene management and associated factors among adolescent school girls in gursum district, Eastern Ethiopia: Institution-based a cross-sectional study
Authors: Mulugeta Demmu Yohannes , Shifera Gutema Mulatu , Ayana Galana Mamo , Adare Dechasa , Yazew Berhanu , Damtew Yohannes Tefera , Geremew Abraham
Published: June 2023

Background

In 2017 WHO reported that due to a lack of menstrual hygiene management (MHM) facilities, high costs, and ignorance, 2.3 billion girls and women worldwide do not manage their menstruation properly. This leads to the use of other options, such as old clothes or other unhygienic materials, which may make them a risk group for infections and other health consequences. Despite the significant role of appropriate menstrual hygiene practices, it is still a missed opportunity to address the hygienic practice of menstruation among girls in many low-and middle-income countries, including Ethiopia.

Objective

Primarily, this study was aimed at investigating menstrual hygiene management (MHM) practice and determinant factors among young adolescent school girls in eastern Ethiopia, Gursum District 2021.

Method

An institutional-based cross-sectional survey was conducted among adolescent school girls in Gursum, Eastern Ethiopia, in 2021. 577 girls participated in this study and a multi-stage sampling procedure was employed so as to select a fair and representative sample of female students who experienced menarche. After controlling for confounding variables, binary logistic regression was fitted to identify factors affecting MHM among adolescent girls.

Result

This study revealed that 58.41% of adolescent school girls practice unsafe MHM practices. It was also reported that 193(33.45%) of the girls use reusable sanitary pads. Of those, 182(31.5%) of them keep the pads in hidden places as it is a shame to be seen Seventy-six (13.17%) of the respondents had experienced vaginal infections during menarche. Having knowledge about menstruation prior to experiencing menstruation [AOR 0.28 CI: (0.1476132, 0.5613692)], being over 15 years old [AOR 1.56, CI: (1.020577, 2.387646)], living in rural areas [AOR 1.23 CI: (1.1563013, 1.3562546)], and having infection around their vagina during menarche [AOR 4.6 CI: (2.633405, 8. 273,883)] were significant determinants of MHM practice.

Conclusion

The majority of the adolescent girls who participated in this study practice unsafe MHM practices. Results suggest that school health education focusing on improving the hygienic practices of adolescent girls during menstruation should be provided.
Women's voices: the lived experience of HIV-positive women in the postpartum period at the University of Gondar comprehensive specialized referral hospital, Ethiopia: a phenomenological study
Authors: Worku Workie Zemene , Azale Telake , Ayele Tadesse Awoke , Mekonnen Dawit Kassahun
Published: June 2023

Background

Pregnancy and the postpartum period are incredibly challenging for women living with the Human Immune Deficiency Virus (HIV) due to the multidimensional influence of HIV infection. These women experience the challenges of navigating pregnancy and motherhood while living with HIV. It is poorly understood how women living with HIV (WLWH) experience pregnancy and postpartum. Therefore, the current study aimed to explore the lived experience of pregnancy and postpartum among women living with HIV.

Methods

A phenomenological qualitative study design was employed. A semi-structured, interview guide was used to conduct in-depth interviews with HIV-positive postpartum women from April to May 2022. All interviews were recorded using a voice recorder and note was taken. The collected data were transcribed and translated into English for analysis. Inductive thematic analysis was applied to analyze the data.

Results

Six main themes about the lived experience of women living with HIV were identified: (1) Fear and distress related to maternal and child Health, (2) HIV status self-disclosure dilemma, (3) Courage and commitment of HIV-positive women to prevent HIV, (4) Challenges faced and coping mechanisms used by HIV-positive women, (5) Health care providers and HIV-positive women interaction, and (6) Solution from their voices.

Conclusion

HIV infection also has a multidimensional impact on women’s life during pregnancy and postpartum. The findings of this study improve our understanding of the lived experience of HIV-positive women while pregnant and in the postpartum period. These women's descriptions showed that they have been experiencing various challenges that are not often addressed in antenatal clinics, such as distress and uncertainties related to vertical transmission of HIV. These women need specialized support and all-encompassing care to have a healthy pregnancy and postpartum period. Moreover, it is essential to understand the circumstances of women's lives, their relationships with others, and their decision-making processes. Healthcare professionals and other responsible bodies working with women living with HIV should encourage and support these mothers to appraise and maintain their commitment to protecting their children from acquiring HIV infection and maintaining their Health to the maximum to raise their children.
Gut microbiota mediated the therapeutic efficiency of Simiao decoction in the treatment of gout arthritis mice
Authors: Lin Xiaoying , Wang Mingzhu , He Zhixing , Hao Guifeng
Published: June 2023

Background

Gut microbiota plays a significant role in the development and treatment of gouty arthritis. Simiao decoction has been shown to alleviate gouty arthritis by inhibiting inflammation, regulating NLRP3 inflammasome, and altering gut microbiota. However, there is no evidence to prove whether gut microbiota directly mediates the therapeutic efficiency of Simiao decoction in treating gout arthritis.

Methods

In this study, fecal microbiota transplantation (FMT) was used to transfer the gut microbiota of gout arthritis mice treated with Simiao decoction or allopurinol to blank gout arthritis mice, in order to investigate whether FMT had therapeutic effects on gout arthritis.

Results

Both Simiao decoction and allopurinol effectively reduced the levels of serum uric acid, liver XOD activity, foot thickness, serum IL-1β, and G-CSF in gout arthritis mice. However, Simiao decoction also had additional benefits, including raising the pain threshold, reducing serum TNF-α and IL-6, alleviating gut inflammation, and repairing intestinal pathology, which were not observed with allopurinol treatment. Moreover, Simiao decoction had a greater impact on gut microbiota than allopurinol, as it was able to restore the abundance of phylum Proteobacteria and genus Helicobacter. After transplantation into gout arthritis mice, gut microbiota altered by Simiao decoction exhibited similar therapeutic effects to those of Simiao decoction, but gut microbiota altered by allopurinol showed no therapeutic effect.

Conclusions

These findings demonstrates that Simiao decoction can alleviate gout arthritis symptoms by regulating gut microbiota.
CircItgb5 promotes synthetic phenotype of pulmonary artery smooth muscle cells via interacting with miR-96-5p and Uba1 in monocrotaline-induced pulmonary arterial hypertension
Authors: Su Hua , Zhu Huiqi , Wang Sihao , Li Yeping , Yan Chao , Wang Jiaoyan , Ying Kejing
Published: June 2023

Background

Pulmonary arterial hypertension (PAH) is a rare but fatal cardiopulmonary disease mainly characterized by pulmonary vascular remodeling. Aberrant expression of circRNAs has been reported to play a crucial role in pulmonary vascular remodeling. The existing literature predominantly centers on studies that examined the sponge mechanism of circRNAs. However, the mechanism of circRNAs in regulating PAH-related protein remains largely unknown. This study aimed to investigate the effect of circItgb5 on pulmonary vascular remodeling and the underlying functional mechanism.

Materials and methods

High-throughput circRNAs sequencing was used to detect circItgb5 expression in control and PDGF-BB-treated pulmonary arterial smooth muscle cells (PASMCs). Localization of circItgb5 in PASMCs was determined via the fluorescence in situ hybridization assay. Sanger sequencing was applied to analyze the circularization of Itgb5. The identification of proteins interacting with circItgb5 was achieved through a RNA pull-down assay. To assess the impact of circItgb5 on PASMCs proliferation, an EdU assay was employed. Additionally, the cell cycle of PASMCs was examined using a flow cytometry assay. Western blotting was used to detect biomarkers associated with the phenotypic switch of PASMCs. Furthermore, a monocrotaline (MCT)-induced PAH rat model was established to explore the effect of silencing circItgb5 on pulmonary vascular remodeling.

Results

CircItgb5 was significantly upregulated in PDGF-BB-treated PASMCs and was predominately localized in the cytoplasm of PASMCs. In vivo experiments revealed that the knockdown of circItgb5 attenuated MCT-induced pulmonary vascular remodeling and right ventricular hypertrophy. In vitro experiments revealed that circItgb5 promoted the transition of PASMCs to synthetic phenotype. Mechanistically, circItgb5 sponged miR-96-5p to increase mTOR level and interacted with Uba1 protein to activate the Ube2n/Mdm2/ACE2 pathway.

Conclusions

CircItgb5 promoted the transition of PASMCs to synthetic phenotype by interacting with miR-96-5p and Uba1 protein. Knockdown of circItgb5 mitigated pulmonary arterial pressure, pulmonary vascular remodeling and right ventricular hypertrophy. Overall, circItgb5 has the potential for application as a therapeutic target for PAH.
Effects of vegetation densities on the performance of attractive targeted sugar baits (ATSBs) for malaria vector control: a semi-field study
Authors: Muyaga Letus L. , Meza Felician C. , Kahamba Najat F. , Njalambaha Rukiyah M. , Msugupakulya Betwel J. , Kaindoa Emmanuel W. , Ngowo Halfan S. , Okumu Fredros O.
Published: June 2023

Background

Attractive targeted sugar baits (ATSBs) control sugar-feeding mosquitoes with oral toxicants, and may effectively complement core malaria interventions, such as insecticide-treated nets even where pyrethroid-resistance is widespread. The technology is particularly efficacious in arid and semi-arid areas. However, their performance remains poorly-understood in tropical areas with year-round malaria transmission, and where the abundant vegetation constitutes competitive sugar sources for mosquitoes. This study compared the efficacies of ATSBs (active ingredient: 2% boric acid) in controlled settings with different vegetation densities.

Methods

Potted mosquito-friendly plants were introduced inside semi-field chambers (9.6 m by 9.6 m) to simulate densely-vegetated, sparsely-vegetated, and bare sites without any vegetation (two chambers/category). All chambers had volunteer-occupied huts. Laboratory-reared Anopheles arabiensis were released nightly (200/chamber) and host-seeking females recaptured using human landing catches outdoors (8.00 p.m.–9.00 p.m.) and CDC-light traps indoors (9.00 p.m.–6.00 a.m.). Additionally, resting mosquitoes were collected indoors and outdoors each morning using Prokopack aspirators. The experiments included a “before-and-after” set-up (with pre-ATSBs, ATSBs and post-ATSBs phases per chamber), and a “treatment vs. control” set-up (where similar chambers had ATSBs or no ATSBs). The experiments lasted 84 trap-nights.

Results

In the initial tests when all chambers had no vegetation, the ATSBs reduced outdoor-biting by 69.7%, indoor-biting by 79.8% and resting mosquitoes by 92.8%. In tests evaluating impact of vegetation, the efficacy of ATSBs against host-seeking mosquitoes was high in bare chambers (outdoors: 64.1% reduction; indoors: 46.8%) but modest or low in sparsely-vegetated (outdoors: 34.5%; indoors: 26.2%) and densely-vegetated chambers (outdoors: 25.4%; indoors: 16.1%). Against resting mosquitoes, the ATSBs performed modestly across settings (non-vegetated chambers: 37.5% outdoors and 38.7% indoors; sparsely-vegetated: 42.9% outdoors and 37.5% indoors; densely-vegetated: 45.5% outdoors and 37.5% indoors). Vegetation significantly reduced the ATSBs efficacies against outdoor-biting and indoor-biting mosquitoes but not resting mosquitoes.

Conclusion

While vegetation can influence the performance of ATSBs, the devices remain modestly efficacious in both sparsely-vegetated and densely-vegetated settings. Higher efficacies may occur in places with minimal or completely no vegetation, but such environments are naturally unlikely to sustain Anopheles populations or malaria transmission in the first place. Field studies therefore remain necessary to validate the efficacies of ATSBs in the tropics.
Clinicopathological characteristics and prognostic factors in axial chondroblastomas: a retrospective analysis of 61 cases and comparison with extra-axial chondroblastomas
Authors: Zheng Bo-Wen , Zheng Bo-Yv , Niu Hua-Qing , Zou Ming-Xiang , Wu Hai-Lin , Wang Ming , Li Xue-Lin
Published: June 2023

Background

A comprehensive understanding of the clinical characteristics and prognostic factors associated with axial chondroblastoma (ACB) is still lacking. This study aimed to understand the clinical characteristics and prognostic factors of axial chondroblastoma (ACB) and compare them with extra-axial chondroblastoma (EACB).

Methods

A retrospective review of our institution’s local database was conducted, encompassing a total of 132 CB patients, of which 61 were diagnosed with ACB and 71 with EACB. Immunohistochemistry was employed to evaluate the expression levels of vimentin, S100, and cytokeratin.

Results

ACB and EACB shared similar characteristics, with the exception of advanced age, tumor size, elevated Vim expression, incidence of surrounding tissue invasion, and postoperative sensory or motor dysfunction. While wide resection and absence of surrounding tissue invasion consistently showed a favorable association with survival in both ACB and EACB cohorts during univariate analysis, most parameters exhibited differential prognostic significance between the two groups. Notably, the significant prognostic factors for local recurrence-free survival in the ACB cohort included the type of resection and the presence of chicken-wire calcification. In the multivariate analysis of overall survival, the type of resection emerged as a significant predictor in the ACB cohort, whereas in the EACB group, the type of resection and the occurrence of postoperative sensory or motor dysfunction were predictive of overall survival.

Conclusion

There may exist distinct biological behaviors between ACB and EACB, thereby providing valuable insights into the prognostic characteristics of ACB patients and contributing to enhanced outcome prediction in this particular patient population.
Surveillance and epidemiological characterization of human adenovirus infections among outpatient children with acute gastroenteritis during the COVID-19 epidemic in Shanghai, China
Authors: Lu Lijuan , Jia Ran , Zhong Huaqing , Duan Shuohua , Xu Menghua , Su Liyun , Cao Lingfeng , Xu Jin
Published: June 2023

Background

Human adenovirus (HAdV) has been recognized as one of the common enteric viruses associated with acute gastroenteritis (AGE) in children. The aim of this study was carried out to illustrate the epidemiological characterization of HAdV Infections among children younger than 15 years in Shanghai during COVID-19.

Methods

During May 2020 and April 2022, 1048 fecal samples were collected from children ≤ 15 years diagnosed with AGE in the Children’s Hospital of Fudan University. HAdV was identified by PCR and sequenced with specific primers. All the obtained sequences were analyzed by MEGA (version 6.0). Demographic information and clinical features data were also collected and analyzed.

Results

In total, 97 (9.3%, 97/1048) samples were detected to be HAdV during May 2020 and April 2022. We found an atypical upsurge in HAdV infection in the year 2021 after a major suppression in the year 2020. Approximately 84.5% (82/97) of HAdV-infected children were aged 0–60 months. Among the 97 HAdV-positive samples, only two species and five genotypes were detected. HAdV-F (88.7%, 86/97) was the most prevalent species and HAdV-F41 (87.6%, 85/97) was the most common genotype. Diarrhea, vomiting, and fever were the main clinical manifestations in children infected with HAdV. The children aged from 0 to 12 months showed simpler patterns of clinical presentation than those of children older than 13 months.

Conclusions

Our findings described the epidemiological changes of HAdV infection in children with AGE during the COVID-19, which further underscored the importance of continuous surveillance of HAdV at both local and global scales.
Retraction Note: Follicle stimulating hormone modulates ovarian stem cells through alternately spliced receptor variant FSH-R3
Authors: Patel Hiren , Bhartiya Deepa , Parte Seema , Gunjal Pranesh , Yedurkar Snehal , Bhatt Mithun
Published: June 2023

This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/1757-2215-6-52.
Double hairpin-assembled probe-mediating catalytic hairpin assembly and primer exchange reaction for sensitive and label-free miRNA analysis in gastric carcinoma
Authors: Zhou Hongyu , Liu Tiantian , Wang Jing , Liu Mingliang , Lei Yaoyao , Tan Xiaohua , Wang Ruhua , Luo Xijin , Chen Yeqing
Published: June 2023

The aberrant expression of microRNA (miRNA) is closely associated with various pathological processes, such as the development of gastric cancer. High-efficiency quantification of miRNAs is significant for the diagnosis, prognosis, and treatment of cancers. However, the sensitive and reliable detection of miRNA remains a huge challenge. We depict here a novel fluorescent approach for sensitive and label-free miRNA detection by exploiting a designed detection scaffold to integrate the catalytic hairpin assembly and primer exchange reaction (PER). In this method, the detection scaffold that is constructed based on the hybridization between two hairpin structure probes (H1 probe and H2 probe), is capable of specifically recognizing target miRNA and activating signal amplification, and the PER process transcribes numerous G-rich sequences to induce ThT-based label-free signal generation. Based on the efficient signal amplification strategy and label-free signal generation mode, the method exhibits a wide detection range of 7 orders of magnitude and a high repeatability (coefficient of variation, 2.76%), implying that the proposed approach will be a robust tool in quantification of miRNA and early diagnosis of disease.

Graphical abstract
The relation of representational competence and conceptual knowledge in female and male undergraduates
Authors: Edelsbrunner Peter A. , Malone Sarah , Hofer Sarah I. , Küchemann Stefan , Kuhn Jochen , Schmid Roman , Altmeyer Kristin , Brünken Roland , Lichtenberger Andreas
Published: June 2023

Background

Representational competence is commonly considered a prerequisite for the acquisition of conceptual knowledge, yet little exploration has been undertaken into the relation between these two constructs. Using an assessment instrument of representational competence with vector fields that functions without confounding topical context, we examined its relation with N = 515 undergraduates’ conceptual knowledge about electromagnetism.

Results

Applying latent variable modeling, we found that students’ representational competence and conceptual knowledge are related yet clearly distinguishable constructs (manifest correlation: r = .54; latent correlation: r = .71). The relation was weaker for female than for male students, which could not be explained by measurement differences between the two groups. There were several students with high representational competence and low conceptual knowledge, but only few students with low representational competence and high conceptual knowledge.

Conclusions

These results support the assumption that representational competence is a prerequisite, yet insufficient condition for the acquisition of conceptual knowledge. We provide suggestions for supporting learners in building representational competence, and particularly female learners in utilizing their representational competence to build conceptual knowledge.
Transnational public and global health education in China
Authors: Pan Stephen W.
Published: June 2023

Transnational public and global health programs in China have rapidly expanded over the past 20 years, and have potential to make important contributions to China’s global health workforce. However, there has been sparse if any literature specific to transnational public and global health higher education in China. In response, this perspective article aims to: (1) outline current transnational public and global health programs in China, and (2) delineate opportunities and challenges for transnational public and global health programs to enhance China’s global health workforce. Based on internet searches, eight active transnational public and global health programs in China were identified in September 2022 (one Bachelors; four Masters; three doctorate). Degree awarding institutions are located in Australia, Portugal, the United Kingdom, and the United States. Courses for stand-alone transnational programs were co-delivered by faculty from the Chinese and foreign sponsoring institutions. The earliest and latest programs were respectively established in 2001 and 2022, and the average year of establishment was 2013. The endurance of some programs (three programs operating ≥ 10 years) indicates the potential sustainability of transnational public and global health programs in China. However, opportunities for cross-cultural engagement appear to be constrained by lack of English (or other language) requirements in some programs, limited recruitment of international students, pandemic travel restrictions, and a dearth of funding for global health research outside China. In addition, students enrolled at transnational universities in China are currently ineligible for China Scholarship Council funding. As China’s need for global health capacity grows amid a rapidly shrinking population of younger citizens, strategic investments in transnational public and global health programs may be of increasing value.
Role of tomosynthesis and ultrasound in the assessment of asymmetric breast densities: a comparative prospective study
Authors: Ahmed Rasha Osama Abdel Ghany , Darwish Mohamed Abo El-Hoda , Chalabi Nivine Abd Elmoneim , Tantawy Salma Hassan
Published: June 2023

Background

Tomosynthesis is a recent advancement of full-field digital mammography involves transforming two-dimensional (2D) breast images into three dimensions (3D) images. It reduces the adverse effect of tissue superimposition on conventional 2D- mammography, therefore having high potential enhancing identification and assessment of asymmetric breast densities. The aim of the study was to assess and compare the diagnostic performance of breast ultrasound and 3D digital breast tomosynthesis in the assessment of asymmetric breast densities.

Results

In the current study, 80 patients with 80 mammographically and/or tomosynthesized breast asymmetries were included. The patients' ages ranged from 30 to 70 years old, with a mean age of 47.2 ± 9.2 SD. Breast ultrasound outperformed digital breast tomosynthesis in terms of diagnostic performance. Tomosynthesis had a sensitivity of 86.4%, specificity of 93.1%, positive predictive value of 82.6%, negative predictive value of 94.7%, and accuracy of 91.3% compared to ultrasounds' sensitivity of 100.00%, specificity of 93.1%, positive predictive value of 84.6%, negative predictive value of 100.00%, and accuracy of 95%.

Conclusions

Incorporating ultrasonography in the assessment of asymmetric breast densities outperformed tomosynthesis and shown to be more precise in characterisation of lesions underlying asymmetric breast density.
Role of blue dye test as an early predictor of post-laryngectomy pharyngocutaneous fistula
Authors: Alsedra Sundus Ali , Zahran Mohamed Abdelnaby , Taha Ashraf Hamza , Youssef Ahmed Sobhy
Published: June 2023

Background

Pharyngocutaneous fistula (PCF) is considered the most common suffering complication in laryngectomized patients. PCF occurs variably from 10 to 20% and sometimes reaches more than 60%, as a result of a combination of local and systemic factors related to poor tissue healing and wound breakdown. Development of PCF affects the restoration of normal life after laryngectomy that could potentially lead to major complications affecting patient survival.

Aim of study

We studied the role of blue dye test in the early detection of PCF post-laryngectomy, which could potentially lead to optimum management which can reduce the duration of hospital stay as well as major complications out of salivary leakage.

Results

Out of 64 patients who underwent TL from Jan 2020 till Dec 2021 at a Tertiary Head and Neck Cancer Center, 40 patients were included in the study. All these patients underwent blue dye test and barium swallow considered the standard postoperative leak test. Patients’ characteristics as well as associated comorbidities have been studied as well as blue dye test findings compared to barium swallow, including median time for diagnosis of PCF, duration, management plan, additional leak tests, and length of hospital stay.

Conclusion

Blue dye test gives a good clue for early detection with proper management of PCF, which could eventually result in early recovery and reduce cost, morbidity, and hospital stay. It can be repeatedly performed to establish a simple, reliable, and safe bedside tool for follow-up.
A review of optimization techniques and algorithms used for FRP applications in civil engineering
Authors: Ramadan Amany S. , Elgendi Elbadr O.
Published: June 2023

Optimization problems aim to minimize or maximize an objective function while fulfilling related constraints. This objective function may be a single or multi-objective optimization. Many studies have been conducted on using these optimization problems in civil and construction engineering, especially for the various machine learning techniques and algorithms that have been developed for fiber reinforced polymer (FRP) applications in the rehabilitation and design of RC structures. FRP is considered the most effective and superior technique for strengthening and retrofitting due to its significant benefits over traditional methods, which have numerous drawbacks, as well as the importance of structural strengthening as a cost-effective and practical option. In this research, an insight into how to apply algorithms and machine learning approaches to optimize FRP applications in civil and construction engineering is presented, as well as a detailed analysis of the various optimization strategies used and their findings. A total of 18 case studies from previous research were discussed and critically evaluated, and they were categorized into six groups according to the algorithm or machine learning technique utilized. Based on the case studies investigated in this study, the genetic algorithm was found to be the optimal algorithm utilized for optimizing FRP applications. The result of this research provides a useful guideline for future researchers and specialists.