bluuebunny/crossref_metadata_2025 huggingface dataset:
A longitudinal analysis of mental and general health status of informal carers in Australia
Authors: Mohanty Itismita , Niyonsenga Theo
Published: November 2019

Background

The study investigated the self-assessed mental and general health status of informal carers in Australia. It evaluated the influence of carer’s health behaviours, namely physical activity, smoking and drinking status, along with their social connectedness and workforce engagement on their health status.

Methods

The study used a retrospective longitudinal design using data from the Household Income and Labour Dynamics of Australia survey, waves 5–15 (2005–2015). It included individuals aged 15 years and older from Australian households surveyed over a period of 11 years. The sample consisted of 23,251 individuals. The outcome measures included: mental health, general health and physical functioning domains of the Short Form 36 Questionnaire, a widely used multi-dimensional measure of health-related quality of life. Using fixed effects regression and following individuals over time, the analysis took care of the issue of individuals self-selecting themselves as carers due to some predisposing factors such as age, poor health, socioeconomic status and sedentary behaviour.

Results

There were statistically significant carer-noncarer status differences in mental (Beta = − 0.587, p = 0.003) and general health (Beta = − 0.670, p = 0.001) outcomes. Aging had a modifying impact on carers’ mental and general health outcomes. Older carers coped better with their caregiving responsibilities than younger ones. Moreover, while physical activities had a positive influence on both mental and general health for non-carers, with more activities generating better health outcomes, it only had a modifying impact on carers’ mental health. Furthermore, the study found that moderate levels of social drinking had beneficial modifying impact on carers’ mental and general health.

Conclusion

This study added value to the literature on informal carers’ mental and general health in Australia by identifying some of the protective and risk factors. The study found the modifying effects of carers’ age, health behaviours such as physical activity, smoking and drinking status on their health. Finally, the study identified an apparent beneficial link between moderate levels of social drinking and carer health that needs to be further explored with more targeted future research.
Using theory of change to develop an intervention theory for designing and evaluating behavior change SDApps for healthy eating and physical exercise: the OCAPREV theory
Authors: Aromatario Olivier , Van Hoye Aurélie , Vuillemin Anne , Foucaut Aude-Marie , Pommier Jeanine , Cambon Linda
Published: November 2019

Background

Connected health devices and applications (referred to hereafter as “SDApps” - Smart devices and applications) are being portrayed as a new way for prevention, with the promise of accessibility, effectiveness and personalization. Many effectiveness evaluations (experimental designs) with strong internal validity exist. While effectiveness does appear to vary, the mechanisms used by these devices have not yet been thoroughly investigated. This article seeks to unpack this black box, and describes the process of elaboration of an intervention theory for healthy eating and physical activity SDApps. It includes a set of requirements relative to their impact on social health inequalities.

Methods

To build this theory, we drew on theory-driven approaches and in particular on the theory of change (ToC) method. To this end, we developed a cumulative and iterative process combining scientific data from the literature with knowledge from experts (researchers and practitioners) and from patients or users. It was a 3-step process, as follows: 1 - identifying the evidence base; 2 - developing the theory through design intervention and creating realistic expectations, including in our case specific work on social health inequalities (SHIs); 3 - modeling process and outcome.

Results

We produced an evidence-based theory according to the ToC model, based on scientific evidence and knowledge from experts and users. It sets out a causal pathway leveraging 11 key mechanisms - theoretical domains - with which 50 behavior change techniques can be used towards 3 ultimate goals: Capacity, Opportunity, Motivation – Behavior (COM-B). Furthermore, the theory specifically integrates requirements relative to the impact on SHIs.

Conclusions

This theory is an aid to SDAapp design and evaluation and it can be used to consider the question of the possible impact of SDApps on the increase in inequalities. Firstly, it enables developers to adopt a more overarching and thorough approach to supporting behavior change, and secondly it encourages comprehensive and contributive evaluations of existing SDApps. Lastly, it allows health inequalities to be fully considered.
Treatment beyond four cycles of first line Platinum and Etoposide chemotherapy in real-life patients with stage IV Small Cell Lung Cancer: a retrospective study of the Merseyside and Cheshire Cancer network
Authors: Sallam Mostafa , Wong Helen , Escriu Carles
Published: November 2019

Background

Dose intensity and dose density of first line Platinum and Etoposide (PE) do not influence Overall Survival (OS) of Small Cell Lung Cancer (SCLC) patients. The effect of treatment length, however, remains unclear. Current guidelines recommend treating beyond 4 cycles -up to 6-, in patients that respond to and tolerate systemic treatment. This has led to variable practice both in clinical practice and clinical research. Here we aimed at quantifying the possible clinical benefit of the extended regimen in our real-life patients treated with PE doublet.

Methods

Of all patients with SCLC treated in our network with non-concurrent first line PE chemotherapy between 2008 and 2015, we identified and described patients that received 4 cycles (4c) or more (> 4c), and analysed patients with stage IV disease.

Results

Two hundred forty-one patients with stage IV had 4c and 69 had > 4c. The latter were more likely to have sequential thoracic radiotherapy, which suggested a lower metastatic burden. Nevertheless, there were no statistically significant differences when comparing clinical outcomes. The median Duration of Response (DoR; time from last chemotherapy cycle to progression) was 5 months in both groups (HR 1.22; 95% CI 0.93–1.61). Median Progression Free Survival (PFS; time from diagnosis to radiological progression) was 8 months (4c) versus 9 months (> 4c) (HR 0.86; 95% CI 0.66–1.13) and median OS was 11 versus 12 months (HR 0.86, 95% CI 0.66–1.14).

Conclusion

Our results highlight a lack of clinical benefit by extending first line PE treatment in stage IV disease, and support limiting treatment to 4 cycles until superiority of a longer regimen is identified in a randomised study.
Association between gingival parameters and Oral health–related quality of life in Caribbean adults: a population-based cross-sectional study
Authors: Collins J R , Elías A R , Brache M , Veras K , Ogando G , Toro M , Rivas-Tumanyan S , Rajendra A B
Published: November 2019

Background

Good oral health has been associated with better quality of life and general health. In the Caribbean, there have been no studies regarding the association between oral health conditions and the quality of life of the population. The main purpose of this study was to investigate the association between gingival parameters and oral health–related quality of life (OHRQoL) in Caribbean adults. A secondary aim of the study was to gain more information on factors that impact OHRQoL in this population.

Methods

This cross-sectional, epidemiological, population-based study was conducted in community settings. After the participants with missing Oral Health Impact Profile (OHIP) data were excluded, the sample size was 1821 (weighted according to the age and gender distribution in each target population). OHIP-14 standardized questionnaires were used to collect information. In addition, a medical/oral health questionnaire including sociodemographics, general health, dental visits, oral hygiene habits and knowledge, the frequency of dental visits, prosthesis use/hygiene, and smoking was administered. A multivariate model included predictors that showed significant associations in the univariate models. Odds ratios (ORs) and 95% confidence intervals (CIs) were reported; statistical significance was set at 0.05.

Results

In the multivariate analysis, current smokers (OR = 2.34, 95% CI: 1.74–3.14 vs. never smokers), those who visited the dentist only when problems arose (OR = 1.65, 95% CI: 1.13–2.40 vs. those visiting once a year), and participants with any chronic disease/condition (OR = 1.38, 95% CI: 1.06–1.78) had higher odds of being in the highest tertile for OHIP score (poorer health).

Conclusions

The present multicenter study identified potential modifiable risk factors for poor OHRQoL among adults in three Caribbean cities.
Intimate partner violence among HIV positive women in care - results from a national survey, Uganda 2016
Authors: Kabwama Steven Ndugwa , Bukenya Justine , Matovu Joseph K. B. , Gwokyalya Violet , Makumbi Fredrick , Beyeza-Kashesya Jolly , Mugerwa Shaban , Bwanika John Baptist , Wanyenze Rhoda K.
Published: November 2019

Background

Women remain disproportionally affected by the HIV/ AIDS epidemic because of sociocultural factors including violence perpetrated by intimate partners. Among HIVpositive (HIV+) women, intimate partner violence (IPV) affects engagement in care and reproductive health outcomes. We analyzed data from a national survey to estimate the prevalence of IPV among HIV+ women in care and associated factors.

Methods

The study was conducted among 5198 HIV+ women in care. Data were collected on socio-demographic characteristics, self-reported couple HIV status, mutual HIV status disclosure and IPV. IPV was assessed by asking participants whether their current husband or partner ever hit, slapped, kicked or did anything to hurt them physically, and whether their current husband or partner ever physically forced them to have intercourse or perform any sexual acts against their will. Women who responded “yes” were classified as having ever experienced IPV. Modified Poisson regression was used to identify factors associated with experiencing IPV.

Results

Of 5198 HIV+ women, 1664 (32.1%) had ever experienced physical violence, 1466 (28.3%) had ever experienced sexual violence and 2290 (44.2%) had ever experienced any IPV. Compared with women in relationships where the woman and their male partner were of the same age, women in relationships where the partner was ≥1 year younger were more likely to ever experience IPV (Prevalence risk ratio [PRR] = 1.43, 95% Confidence Interval [95%CI]: 1.10–1.71), as were women in relationships where the partner was < 10 years older (PRR = 1.20, 95%CI: 1.00–1.43) or ≥ 10 years older (PRR = 1.31, 95%CI: 1.05–1.64). Compared with women who did not have biological children, women with 3–4 biological children were more likely to have ever experienced IPV (PRR = 1.27 95%CI: 1.00–1.59) as were those with ≥5 biological children (PRR = 1.34, 95%CI: 1.06–1.71). Compared with women in sero-concordant relationships, women in sero-discordant relationships were less likely to ever experience IPV (PRR = 0.87 95%CI: 0.78–0.98).

Conclusions

In Uganda, a high proportion of HIV+ women have ever experienced IPV. Experiencing IPV was associated with circumstances related to the intimate relationship between the woman and her male partner. Health care workers should screen HIV+ women in care for IPV and offer appropriate psychosocial assistance.
Development of domain-specific epistemological beliefs of physiotherapists: a longitudinal study
Authors: Bientzle Martina , Cress Ulrike , Kimmerle Joachim
Published: November 2019

Background

Epistemological beliefs (EBs) and therapeutic health concepts are two important factors of influence that affect how healthcare professionals process treatment-relevant information. A previous investigation compared physiotherapy students’ EBs and therapeutic health concepts with those of professionals in a cross-sectional study. That study design, however, did not allow for any conclusions about the temporal development of these concepts. This shortcoming has been addressed in the study presented here, which aimed to assess that temporal development.

Methods

In a longitudinal study, physiotherapists filled in a questionnaire that measured their personal EBs about physiotherapy and about medicine, as well as their biomedical and biopsychosocial therapeutic health concepts. The participants were first examined during their medical training (December 2011). The follow-up measure was about 3 years later when the participants had become professional physiotherapists (January 2015). The development of their EBs was examined using paired sample t-tests and Wilcoxon signed-rank test.

Results

The analysis was based on 41 participants who filled in the questionnaire at both time points and were working as physiotherapists at the time of the second measurement. There was a development of physiotherapy-related and a development of medicine-related EBs: Physiotherapy-related as well as medicine-related EBs were more sophisticated when physiotherapists had already entered the working world than during their physiotherapy training. Due to psychometric problems of the scales, the development of their therapeutic health concepts could not be analyzed.

Conclusions

EBs are an important factor for (lifelong) learning. Physiotherapy-related and medicine-related EBs developed similarly in both domains. This is an indication that the temporal development of EBs is an expression of professionalization of healthcare personnel in their occupational field. The findings demonstrate that the development of EBs is not completed at the end of vocational training; it appears to be a development that continues even after the transition to professional life.
Registered nurses’ perceptions and experiences of autonomy: a descriptive phenomenological study
Authors: Oshodi Titilayo Olufunke , Bruneau Benjamin , Crockett Rachel , Kinchington Francia , Nayar Shoba , West Elizabeth
Published: November 2019

Background

Professional autonomy is a key concept in understanding nurses’ roles in delivering patient care. Recent research exploring the role of autonomy in the nursing work environment indicated that English and American nurses had differing perceptions of autonomy. This qualitative study aimed to explore the understanding and experiences of autonomy of nurses working in England.

Methods

A descriptive phenomenological analysis of data from 48 semi-structured interviews with registered nurses from two National Health Service (NHS) hospitals (purposive sample) was used to explore the concept of autonomy.

Results

Six themes were identified:working independently; working in a team; having professional skills and knowledge; involvement in autonomy;boundaries around autonomy;anddeveloping autonomy requires support. A key finding was that nurses related autonomy to their clinical work and to the immediate work environment of their ward, rather than to a wider professional context. Nurses also perceived that autonomy could be turned off and on rather than comprising an integrated aspect of nursing.

Conclusions

Findings suggest that nurses in England, as framed by the sample, had a local ward-focused view of autonomy in comparison to nurses in America, who were reported to relate autonomy to a wider involvement in hospital level committees. Findings further indicate that autonomy was practiced occasionally, rather than incorporated into practice. Findings highlight the need for nurses in England to adopt a broader perspective and actively contribute to writing hospital guidelines and policies that recognise the importance of autonomy to nurse training and practice.
What happened and why? A programme theory-based qualitative evaluation of a healthcare-academia partnership reform in primary care
Authors: Uvhagen Håkan , Hasson Henna , Hansson Johan , von Knorring Mia
Published: November 2019

Background

There is increasing interest in and demands for partnerships between academia and healthcare practices. Few empirical studies have described the influence of such partnerships from a practice perspective. The purpose of this study was to evaluate the impact of a reform launched to increase integration between primary care and academia and to identify potential reasons for why the observed impact occurred in three areas targeted by the reform: research, student education, and continued professional development.

Methods

The study was conducted in Stockholm County, the largest healthcare region in Sweden, at the introduction of a partnership between primary care and academia, including eight coordinating centres and approximately 500 surrounding primary care units. A programme theory-based qualitative approach to evaluation was used, building on document analysis, and in-depth interviews with the centre managers (n = 6) and coordinators (n = 8) conducted 42–66 months after the initiation of the reform.

Results

The analysis showed that the reform had some impact on all three areas targeted by the reform: research, student education, and continued professional development. The input that contributed most extensively to the impact was the establishment of facilitating roles. Most changes occurred at the coordinating centres and primarily in the area of student education. The effect on student education was primarily due to having prior experience in this area and perceptions of timely benefits of students to care practice.

Conclusions

Partnerships between primary care and academia hold the potential of practice impact. To increase integration between primary care and academia, the components of the integration must be understandable and relevant for primary care practitioners, and importantly, compliant with delivery of primary care.
Evaluation of allogeneic freeze-dried platelet lysate in cartilage exposed to interleukin 1-β in vitro
Authors: Camargo Garbin Livia , McIlwraith C. Wayne , Frisbie David D.
Published: November 2019

Background

Platelet-rich plasma (PRP) as well as other platelet-derived products have been used as a potential disease-modifying treatment for musculoskeletal diseases, such as osteoarthritis (OA). The restorative properties of such products rely mainly on the high concentrations of growth factors, demonstrating encouraging results experimentally and clinically. Yet, the autologous blood-derived nature of the PRP product lead to limitations that precludes it’s widespread use. The main limitations for PRP use are; product variability, the need for minimum laboratory settings in most cases, and the need for storage at low temperatures to preserve its properties. Based on these limitations, the objective of this study was to investigate an allogeneic off-the-shelf platelet lysate (PL) in cartilage exposed to interleukin 1β (IL-1β). For this purpose, blood and cartilage were harvested from eight skeletally mature and healthy horses. Blood was processed into PL aliquots and divided into three groups (Frozen, Freeze-dried and Filtered freeze-dried), used in autologous and allogeneic conditions and in three different concentrations (1.5, 3 and 6-fold). Different PL preparations were then applied in cartilage culture with interleukin-1 beta and cultured for 10 days. Cartilage and media samples were collected and analyzed for total GAG and35SO4-labeled GAG content.

Results

No significant differences between the controls and PL groups in cartilage and media were demonstrated. The effects of PL on cartilage matrix were concentration dependent and intermediate concentrations (3-fold) in PL showed increased35SO4-labelled GAG in cartilage.

Conclusion

In conclusion, the allogeneic freeze-dried PL presented equivalent effects compared to frozen autologous PL. Intermediate platelet concentration on average demonstrated improved results, demonstrating less GAG loss compared to other concentrations.
Use of the rSpaA415 antigen indicates low rates of Erysipelothrix rhusiopathiae infection in farmed cattle from the United States of America and Great Britain
Authors: Cubas Atienzar Ana I. , Gerber Priscilla F. , Opriessnig Tanja
Published: November 2019

Background

Clinical cases ofErysipelothrix rhusiopathiae, a zoonotic gram-positive bacterium, have been reported in many ruminant species, including in cattle, deer, moose and muskoxen. Fatal cases have been repeatedly reported in cattle over the years but to date there is only one Japanese study investigating the seroprevalence of this bacterium in cattle using the growth agglutination test (GAT). This technique is subjective, time-consuming, expensive and hazardous compared to modern serological tests such as enzyme-linked immunosorbent assays (ELISA) or the newly developed fluorescent microbead-based immunoassays (FMIA).

Results

The FMIA based on the surface protein SpaA (rSpaA415) antigen ofE. rhusiopathiaedeveloped in this study had an almost perfect agreement with the GAT (k = 0.83) and showed a sensitivity of 89.7% and a specificity of 92.9% when compared to the GAT. Overall, detection rates ofE. rhusiopathiaeantibody positive samples were 13.8% (51/370) in British herds and 6% (12/200) in US herds. Positive cattle were present in 34.3% (24/70) of the investigated British farms and in 34.7% (8/23) of the US farms with an on-farm prevalence of 7.1 to 100% for the British farms and 8.3–30% for the US farms.

Conclusions

FMIA is a fast, safe and economic alternative to the GAT for the diagnosis ofE. rhusiopathiaein cattle. This work is the first seroprevalence study ofE. rhusiopathiaein healthy farmed cattle in Great Britain and the US and revealed that infection occurs at a low level. Further investigations to evaluate risks of zoonotic transmission when handling cattle are needed.
Specific growth rate governs AOX1 gene expression, affecting the production kinetics of Pichia pastoris (Komagataella phaffii) PAOX1-driven recombinant producer strains with different target gene dosage
Authors: Garrigós-Martínez Javier , Nieto-Taype Miguel Angel , Gasset-Franch Arnau , Montesinos-Seguí José Luis , Garcia-Ortega Xavier , Valero Francisco
Published: November 2019

Background

The PAOX1-based expression system is the most widely used for producing recombinant proteins in the methylotrophic yeast Pichia pastoris (Komagataella phaffii). Despite relevant recent advances in regulation of the methanol utilization (MUT) pathway have been made, the role of specific growth rate (µ) in AOX1 regulation remains unknown, and therefore, its impact on protein production kinetics is still unclear.

Results

The influence of heterologous gene dosage, and both, operational mode and strategy, on culture physiological state was studied by cultivating the two PAOX1-driven Candida rugosa lipase 1 (Crl1) producer clones. Specifically, a clone integrating a single expression cassette of CRL1 was compared with one containing three cassettes over broad dilution rate and µ ranges in both chemostat and fed-batch cultivations. Chemostat cultivations allowed to establish the impact of µ on the MUT-related MIT1 pool which leads to a bell-shaped relationship between µ and PAOX1-driven gene expression, influencing directly Crl1 production kinetics. Also, chemostat and fed-batch cultivations exposed the favorable effects of increasing the CRL1 gene dosage (up to 2.4 fold in qp) on Crl1 production with no significant detrimental effects on physiological capabilities.

Conclusions

PAOX1-driven gene expression and Crl1 production kinetics in P. pastoris were successfully correlated with µ. In fact, µ governs MUT-related MIT1 amount that triggers PAOX1-driven gene expression—heterologous genes included—, thus directly influencing the production kinetics of recombinant protein.
Long non-coding RNA UCA1 promotes breast cancer by upregulating PTP1B expression via inhibiting miR-206
Authors: Li Yi , Zeng Qingan , Qiu Jiliang , Pang Ting , Xian Jianzhong , Zhang Xuexia
Published: November 2019

Background

The long non-coding RNA (lncRNA) urothelial carcinoma-associated 1 (UCA1) is involved in various cancers and often functions through microRNAs. The pro-survival protein PTP1B is known to play important roles in cancer development. However, the connection between UCA1 and PTP1B in breast cancer is not well studied.

Methods

In this study, we first evaluated the correlation between UCA1 level and PTP1B expression in breast tissues, which showed the expression of PTP1B were much higher in the breast tumor tissues than in the peritumor normal tissues. The UCA1 level was positively associated with PTP1B expression in breast tumor tissues.

Results

We observed that UCA1 could up-regulate PTP1B expression in breast cancer cells. We also found that miR-206 could inhibit the expression of PTP1B by directly binding to the 3′-UTR of its mRNA. Interestingly, UCA1 could increase the expression of PTP1B through sequestering miR-206 at post-transcriptional level. The results also suggested that UCA1-induced PTP1B expression facilitated the proliferation of breast cancer cells.

Conclusions

We conclude that UCA1 can up-regulates PTP1B to enhance cell proliferation through sequestering miR-206 in breast cancer. Our finding provides new insights into the mechanism of breast cancer regulation by UCA1, which could be a potential target for breast cancer treatment.

Trial registration 2012N5hSYSU48573. Registered at Oct 12, 2012
Circ-AKT3 inhibits clear cell renal cell carcinoma metastasis via altering miR-296-3p/E-cadherin signals
Authors: Xue Dingwei , Wang Huan , Chen Yuanlei , Shen Danyang , Lu Jieyang , Wang Mingchao , Zebibula Abudureheman , Xu Liwei , Wu Haiyang , Li Gonghui , Xia Liqun
Published: November 2019

Background

Circular RNA (circRNA) is a type of circular endogenous RNA produced by special selective splicing and participates in progression of diverse diseases. However, the role of circRNA in clear cell renal cell carcinoma (ccRCC) is still rarely reported.

Methods

We detected lower circ-AKT3 expression in ccRCC using the circular RNA microarray. Then, qPCR array was applied to verify the expression of circ-AKT3 in between 60 ccRCC tissues and adjacent normal tissues, as well as ccRCC cell lines and human normal kidney cell (HK-2). We investigated the function of circ-AKT3 in ccRCC in vitro and in vivo and detected underlying mechanisms by Western blotting, bioinformatic analysis, RNA pull-down assay and luciferase reporter assay.

Results

Circ-AKT3 was verified significantly downregulated in ccRCC. Knockdown of circ-AKT3 promoted ccRCC migration and invasion, while overexpression of circ-AKT3 suppressed ccRCC metastasis. Further, circ-AKT3/miR-296-3p/E-cadherin axis was shown responsible for circ-AKT3 inhibiting ccRCC metastasis.

Conclusion

Circ-AKT3 suppresses ccRCC metastasis by enforcing E-cadherin expression through competitively binding miR-296-3p. Circ-AKT3 may therefore serve as a novel therapeutic to better suppress ccRCC metastasis.
Pathologically confirmed brain metastases from primary uterine cervical tumors: two cases and a literature review
Authors: Bi Yalan , Li Lei
Published: November 2019

Background

Pathologically confirmed brain metastasis from primary cervical cancer is extremely rare. Herein, we report two cases of intracranial metastasis from cervical cancer that were histopathologically confirmed after surgical excision. In addition, we conducted a literature review to characterize the clinical manifestation, pathogenesis, and treatment of these patients.

Case summary

Among the 1800 patients with primary cervical cancer who received therapy at our center from 2010 to 2018, two patients (0.1%) had definite histopathological evidence of brain metastasis. A 46-year-old female who had a history of poorly differentiated stage IIB cervical cancer with neuroendocrine differentiation presented with a solitary mass in the right occipital lobe 26 months after the initial diagnosis. She underwent surgery and chemotherapy but died of disease progression 9 months later. Another 55-year-old female diagnosed with poorly differentiated stage IVB cervical squamous cancer presented with a solitary mass in the right frontal lobe 16 months after simple hysterectomy. Twelve months later, multiple lesions were observed in the bilateral frontal-parietal lobe. The lesions were treated by surgery and stereotactic radiosurgery. The patient died of multiple organ failure 14 months later.

Conclusion

The pathogenesis and best management of brain metastasis from cervical cancer are not clear. Highly invasive subtypes or advanced cancer stages may be the key clinicopathological factors of brain metastasis. Surgical treatment is warranted in patients with a good health status and without metastasis to other sites.
What motivates individuals to volunteer in Ebola epidemic response? A structural approach in Guinea
Authors: Kpanake Lonzozou , Dounamou Togba , Sorum Paul Clay , Mullet Etienne
Published: November 2019

Background

The 2014–2016 Ebola epidemic in West Africa placed greater demands on the affected countries’ already scarce health workforce. Consequently, governments in the most affected West African countries made appeals for volunteers to join Ebola response programs. Those volunteers played an important yet high-risk role in aiding the victims of the Ebola epidemic and in limiting its spread. However, little is known as to what motivated those volunteers to commit themselves to the Ebola response programs. This information is important for planning for volunteer recruitment strategies during future epidemics. The aim of the present study, therefore, was to identify and assess the motivations that led individuals to volunteer for Ebola response programs in West Africa.

Methods

The study participants were 600 persons who volunteered through the Guinean Ebola response program during the 2014–2016 epidemic. From February to May 2016, they were presented with a questionnaire that contained 50 assertions referring to possible motives for volunteering in the Ebola response program and indicated their degree of agreement with each of them on a scale of 0–10. The responses were analyzed using factor analysis.

Results

Seven separable volunteer motivations were identified. “Feeling of patriotic duty” (M = 9.02) and “Feeling of moral responsibility” (M = 8.12) clearly emerged as the most important. Second-tier motivations were “Compliance with authority” (M = 6.66), “Desire to use one’s skills for a collective good” (M = 6.49), “Seeking personal growth” (M = 5.93), “Desire to gain community recognition” (M = 5.13), and “Hoping for a career reorientation” (M = 4.52).

Conclusions

These findings strongly suggest that volunteer recruitment, if needed in future Ebola epidemics, must adopt a multifaceted motivational approach rather than focus on one single motivator. Putting relatively more emphasis on motivational messages referring to patriotic values, as well as to moral responsibility, would likely increase volunteering.
Debating medicalization of Female Genital Mutilation/Cutting (FGM/C): learning from (policy) experiences across countries
Authors:   ANSER, Leye Els , Van Eekert Nina , Shamu Simukai , Esho Tammary , Barrett Hazel
Published: November 2019

Background

Although Female Genital Mutilation/Cutting (FGM/C) is internationally considered a harmful practice, it is increasingly being medicalized allegedly to reduce its negative health effects, and is thus suggested as a harm reduction strategy in response to these perceived health risks. In many countries where FGM/C is traditionally practiced, the prevalence rates of medicalization are increasing, and in countries of migration, such as the United Kingdom, the United States of America or Sweden, court cases or the repeated issuing of statements in favor of presumed minimal forms of FGM/C to replace more invasive forms, has raised the debate between the medical harm reduction arguments and the human rights approach.

Main body

The purpose of this paper is to discuss the arguments associated with the medicalization of FGM/C, a trend that could undermine the achievement of Sustainable Development Goal 5.3. The paper uses four country case studies, Egypt, Indonesia, Kenya and UK, to discuss the reasons for engaging in medicalized forms of FGM/C, or not, and explores the ongoing public discourse in those countries concerning harm reduction versus human rights, and the contradiction between medical ethics, national criminal justice systems and international conventions. The discussion is structured around four key hotly contested ethical dilemmas. Firstly, that the WHO definition of medicalized FGM/C is too narrow allowing medicalized FGM to be justified by many healthcare professionals as a form of harm reduction which contradicts the medical oath of do no harm. Secondly, that medicalized FGM/C is a human rights abuse with lifelong consequences, no matter who performs it. Thirdly, that health care professionals who perform medicalized FGM/C are sustaining cultural norms that they themselves support and are also gaining financially. Fourthly, the contradiction between protecting traditional cultural rights in legal constitutions versus human rights legislation, which criminalizes FGM/C.

Conclusion

More research needs to be done in order to understand the complexities that are facilitating the medicalization of FGM/C as well as how policy strategies can be strengthened to have a greater de-medicalization impact. Tackling medicalization of FGM/C will accelerate the achievement of the Sustainable Development Goal of ending FGM by 2030.
Principal variable selection to explain grain yield variation in winter wheat from features extracted from UAV imagery
Authors: Li Jiating , Veeranampalayam-Sivakumar Arun-Narenthiran , Bhatta Madhav , Garst Nicholas D. , Stoll Hannah , Stephen Baenziger P. , Belamkar Vikas , Howard Reka , Ge Yufeng , Shi Yeyin
Published: November 2019

Background

Automated phenotyping technologies are continually advancing the breeding process. However, collecting various secondary traits throughout the growing season and processing massive amounts of data still take great efforts and time. Selecting a minimum number of secondary traits that have the maximum predictive power has the potential to reduce phenotyping efforts. The objective of this study was to select principal features extracted from UAV imagery and critical growth stages that contributed the most in explaining winter wheat grain yield. Five dates of multispectral images and seven dates of RGB images were collected by a UAV system during the spring growing season in 2018. Two classes of features (variables), totaling to 172 variables, were extracted for each plot from the vegetation index and plant height maps, including pixel statistics and dynamic growth rates. A parametric algorithm, LASSO regression (the least angle and shrinkage selection operator), and a non-parametric algorithm, random forest, were applied for variable selection. The regression coefficients estimated by LASSO and the permutation importance scores provided by random forest were used to determine the ten most important variables influencing grain yield from each algorithm.

Results

Both selection algorithms assigned the highest importance score to the variables related with plant height around the grain filling stage. Some vegetation indices related variables were also selected by the algorithms mainly at earlier to mid growth stages and during the senescence. Compared with the yield prediction using all 172 variables derived from measured phenotypes, using the selected variables performed comparable or even better. We also noticed that the prediction accuracy on the adapted NE lines (r = 0.58–0.81) was higher than the other lines (r = 0.21–0.59) included in this study with different genetic backgrounds.

Conclusions

With the ultra-high resolution plot imagery obtained by the UAS-based phenotyping we are now able to derive more features, such as the variation of plant height or vegetation indices within a plot other than just an averaged number, that are potentially very useful for the breeding purpose. However, too many features or variables can be derived in this way. The promising results from this study suggests that the selected set from those variables can have comparable prediction accuracies on the grain yield prediction than the full set of them but possibly resulting in a better allocation of efforts and resources on phenotypic data collection and processing.
Fueling ab initio folding with marine metagenomics enables structure and function predictions of new protein families
Authors: Wang Yan , Shi Qiang , Yang Pengshuo , Zhang Chengxin , Mortuza S. M. , Xue Zhidong , Ning Kang , Zhang Yang
Published: November 2019

Introduction

The ocean microbiome represents one of the largest microbiomes and produces nearly half of the primary energy on the planet through photosynthesis or chemosynthesis. Using recent advances in marine genomics, we explore new applications of oceanic metagenomes for protein structure and function prediction.

Results

By processing 1.3 TB of high-quality reads from the Tara Oceans data, we obtain 97 million non-redundant genes. Of the 5721 Pfam families that lack experimental structures, 2801 have at least one member associated with the oceanic metagenomics dataset. We apply C-QUARK, a deep-learning contact-guided ab initio structure prediction pipeline, to model 27 families, where 20 are predicted to have a reliable fold with estimated template modeling score (TM-score) at least 0.5. Detailed analyses reveal that the abundance of microbial genera in the ocean is highly correlated to the frequency of occurrence in the modeled Pfam families, suggesting the significant role of the Tara Oceans genomes in the contact-map prediction and subsequent ab initio folding simulations. Of interesting note, PF15461, which has a majority of members coming from ocean-related bacteria, is identified as an important photosynthetic protein by structure-based function annotations. The pipeline is extended to a set of 417 Pfam families, built on the combination of Tara with other metagenomics datasets, which results in 235 families with an estimated TM-score over 0.5.

Conclusions

These results demonstrate a new avenue to improve the capacity of protein structure and function modeling through marine metagenomics, especially for difficult proteins with few homologous sequences.
Advanced platelet-rich fibrin plus gold nanoparticles enhanced the osteogenic capacity of human mesenchymal stem cells
Authors: Ghaznavi Dara , Babaloo Amirreza , Shirmohammadi Adileh , Zamani Arezoo Rezaie Nezhad , Azizi Mehdi , Rahbarghazi Reza , Ghaznavi Aisan
Published: November 2019

Objectives

There is still insufficient clinical evidence of platelet-rich fibrin beneficial effects on bone regeneration. Gold nanoparticles have been shown to enhance osteogenic differentiation and bone mineralization. The purpose of this study was to investigate the effect of advanced-platelet-rich fibrin modified by gold nanoparticles on the osteoblastic differentiation of human mesenchymal stem cells.

Results

MTT assay revealed 0.0125 mM gold nanoparticles had no cytotoxic effects on stem cells after 7 days. The addition of 0.0125 mM gold nanoparticle to advanced-platelet-rich fibrin clot increased cell viability compared to the non-treated control group (p < 0.05). 7-day incubation of stem cells with advanced-platelet-rich fibrin modified by gold nanoparticles conditioned media was shown to promote alkaline phosphatase activity compared to the control cells and group treated with advanced-platelet-rich fibrin condition media (p < 0.05). By using Alizarin Red S staining, red-colored calcium deposits were observed in the group treated with advanced-platelet-rich fibrin and gold nanoparticles conditioned media in comparison with non-treated cells (p < 0.05). Advanced-platelet-rich fibrin conditioned medium was unable to promote calcium deposition compared to the combination of advanced-platelet-rich fibrin and gold nanoparticles (p < 0.05). Adding gold nanoparticles to advanced-platelet-rich fibrin and fibrin and platelet byproducts could be an alternative strategy to improve osteogenic capacity of stem cells.
Direct conversion of human fibroblast to hepatocytes using a single inducible polycistronic vector
Authors: Ballester Maria , Bolonio Miguel , Santamaria Ramon , Castell José V. , Ribes-Koninckx Carmen , Bort Roque
Published: November 2019

Background

Human fibroblasts can be reprogrammed into induced hepatocyte-like cells through the expression of a set of transcription factors. Although the generation of induced hepatocyte-like cells by HNF4A, HNF1A, and FOXA3 expression has proven to be a robust experimental strategy, using multiple lentivirus results in a highly variable heterogeneous population.

Methods

We designed and implemented a novel approach based on the delivery of reprogramming factors and green fluorescent protein in a single doxycycline-inducible lentiviral vector using 2A self-cleaving peptides.

Results

Fibroblasts infected with the lentiviral vector can be amplified in basic fibroblast culture media in the absence of doxycycline without induction of hepatic genes. Upon switching to hepatic maturation media containing doxycycline, cells stop proliferating, activate hepatic gene transcription, and perform metabolic functions characteristic of hepatocytes.

Conclusion

Our strategy can generate an unlimited source of homogeneously induced hepatocyte-like cells from different genetic background donors, capable of performing typical hepatic functions suitable for drug research and other in vitro applications.
The impact of hepatocyte nuclear factor-1α on liver malignancies and cell stemness with metabolic consequences
Authors: Wang Xue , Hassan Waseem , Zhao Jing , Bakht Sahar , Nie Yunjuan , Wang Ying , Pang Qingfeng , Huang Zhaohui
Published: November 2019

Hepatocyte nuclear factor-1 alpha (HNF-1α) is a transcription factor expressed predominantly in the liver among other organs. Structurally, it contains POU-homeodomain that binds to DNA and form proteins that help in maintaining cellular homeostasis, controlling metabolism, and differentiating cell lineages. Scientific research over the period of three decades has reported it as an important player in various liver malignancies such as hepatocellular cancers (HCCs), hepatocellular adenoma (HA), and a more specific HNF-1α-inactivated human hepatocellular adenoma (H-HCAs). Abundant clinical and rodent data have noted the downregulation of HNF-1α in parallel with liver malignancies. It is also interesting to notice that the co-occurrence of mutated HNF-1α expression and hepatic carcinomas transpires typically along with metabolic repercussion. Moreover, scientific data implies that HNF-1α exerts its effects on cell stemness and hence can indirectly impact liver malignancies and metabolic functioning. The effects of HNF-1α on cell stemness present a future opportunity to explore a possible and potential breakthrough. Although the mechanism through which inactivated HNF-1α leads to hepatic malignancies remain largely obscure, several key signal molecules or pathways, including TNF-α, SHP-1, CDH17, SIRT, and MIA-2, have been reported to take part in the regulations of HNF-1α. It can be concluded from the present scientific data that HNF-1α has a great potential to serve as a target for liver malignancies and cell stemness.
Protocol for a systematic review of the use of qualitative comparative analysis for evaluative questions in public health research
Authors: Hanckel Benjamin , Petticrew Mark , Thomas James , Green Judith
Published: November 2019

Background

There is an increasing recognition that health intervention research requires methods and approaches that can engage with the complexity of systems, interventions, and the relations between systems and interventions. One approach which shows promise to this end is qualitative comparative analysis (QCA), which examines casual complexity across a medium to large number of cases (between 10 and 60+), whilst also being able to generalise across those cases. Increasingly, QCA is being adopted in public health intervention research. However, there is a limited understanding of how it is being adopted. This systematic review will address this gap, examining how it is being used to understand complex causation; for what settings, populations and interventions; and with which datasets to describe cases.

Methods

We will include published and peer-reviewed studies of any public health intervention where the effects on population health, health equity, or intervention uptake are being evaluated. Electronic searches of PubMed, Scopus, Web of Science (incorporating Social Sciences Citation Index and Arts & Humanities Citation Index), Microsoft Academic, and Google Scholar will be performed. This will be supplemented with reference citation tracking and personal contact with experts to identify any additional published studies. Search results will be single screened, with machine learning used to check these results, acting as a ‘second screener’. Any disagreement will be resolved through discussion. Data will be extracted from full texts of eligible studies, which will be assessed against inclusion criteria, and synthesised narratively, using thematic synthesis methods.

Discussion

This systematic review will provide an important map of the increasing use of QCA in public health intervention literature. This review will identify the current scope of research in this area, as well as assessing claims about the utility of the method for addressing complex causation in public health research. We will identify implications for better reporting of QCA methods in public health research and for reporting of case studies such that they can be used in future QCA studies.

Systematic review registration

PROSPERO, CRD42019131910