bluuebunny/crossref_metadata_2025_split huggingface dataset:
Folic acid-conjugated magnetic triblock copolymer nanoparticles for dual targeted delivery of 5-fluorouracil to colon cancer cells
Authors: Mirzaghavami Parvin Sadat , Khoei Samideh , Khoee Sepideh , Shirvalilou Sakine 
Published: May 2022

Abstract
Background
In the current study, folic acid-conjugated PEG-PCL-PEG triblock copolymer were synthesized and loaded with 5-fluorouracil and magnetite nanoparticles (5-FU-SPION-PEG-PCL-PEG-FA) for targeted delivery of drug to HT29 human colon cancer cells and CT26 mouse colon cancer model. The nanoparticles were synthesized and characterized by nuclear magnetic resonance spectroscopy (NMR) and transmission electron microscopy (TEM). The cellular uptake of nanoparticles was assessed in vitro (on HUVEC and HT29) and in vivo (on CT26 colon tumor tissues). The cytotoxic effect of nanoparticles was assessed on human colon cell lines (HT29, Caco-2, HTC116, and SW480) and normal HUVEC cells. In addition, antitumor effects of nanoparticles were investigated based on tumor volume, survival time and protein expression of Bax and Bcl-2 on CT26 tumor-bearing BALB/c mice.

Results
Characterization of nanoparticles showed 5-FU-SPION-PEG-PCL-PEG-FA (5-FU-NPs-FA) nanoparticles had spherical shape with hydrodynamic diameter of 85 nm. The drug-release profile exhibited sustained pH-responsive release with cumulative release reaching approximately 23% after 24 h. Cellular uptake studies revealed that HT29 cancer cells absorb higher amount of 5-FU-NPs-FA as compared to HUVEC normal cells (P < 0.05). In addition, 5-FU-NPs-FA was found to be more antitumor efficient in comparison to free 5-FU based on Bax/Bcl2 ratio, survival rate of tumoral mouse and inhibitory tumor volume (P < 0.05).

Conclusions
The results suggested that 5-FU-NPs-FA could be considered as promising sustained drug delivery platform for in vitro and in vivo conditions, which may provide selective treatment of tumor cancer cells.

Graphical Abstarct
Taxonomy and SSU rRNA gene-based phylogeny of two new Euplotes species from China: E. chongmingensis n. sp. and E. paramieti n. sp. (Protista, Ciliophora)
Authors: Han Kun , Pan Hongbo , Jiang Jiamei 
Published: May 2022

Abstract
Background
The genus Euplotes Ehrenberg, 1830, one of the most complicated and confused taxa, contains about 160 nominal species. It was once proposed to be divided into four genera, two of which were proved to be non-monophyletic. At least 19 new species have been discovered in the past decade, implying that there is a large undiscovered diversity of this genus.

Results
The morphology of two new freshwater euplotid ciliates, Euplotes chongmingensis n. sp. and E. paramieti n. sp., isolated from Shanghai, China, were investigated using live observations, protargol staining, and Chatton-Lwoff silver staining method. Euplotes chongmingensis is characterized by its small size (40–50 × 25–35 μm), about 24 adoral membranelles, 10 frontoventral cirri, two marginal and two caudal cirri, eight dorsolateral kineties with 11–16 dikinetids in the mid-dorsolateral kinety and a double type of silverline system. Euplotes paramieti n. sp. is 180–220 × 110–155 μm in vivo and strongly resembles E. amieti but having a difference of 57 bp in their SSU rRNA gene sequences. Phylogenetic analyses based on SSU rRNA gene sequence data were used to determine the systematic positions of these new taxa.

Conclusions
The description of two new freshwater taxa and their SSU rRNA gene sequences improve knowledge of biodiversity and enrich the database of euplotids. Furthermore, it offers a reliable reference for environmental monitoring and resource investigations.
An antisense Alu transposon insertion/deletion polymorphism of ALDH1A1 may functionally associate with Parkinson’s disease
Authors: Fan Hui-Hui , Zheng Jing , Huang Xiao-Ya , Wu Ke-Yun , Cui Lei , Dong Hao-Jia , Wang Zhen , Zhang Xiong , Zhu Jian-Hong 
Published: May 2022

Abstract
Background
Aldehyde dehydrogenase 1 (encoded by ALDH1A1) has been shown to protect against Parkinson’s disease (PD) by reducing toxic metabolites of dopamine. We herein revealed an antisense Alu element insertion/deletion polymorphism in intron 4 of ALDH1A1, and hypothesized that it might play a role in PD.

Methods
A Han Chinese cohort comprising 488 PD patients and 515 controls was recruited to validate the Alu insertion/deletion polymorphism following a previous study of tag-single nucleotide polymorphisms, where rs7043217 was shown to be significantly associated with PD. Functional analyses of the Alu element insertion were performed.

Results
The Alu element of ALDH1A1 was identified to be a variant of Yb8 subfamily and termed as Yb8c4. The antisense Yb8c4 insertion/deletion polymorphism (named asYb8c4ins and asYb8c4del, respectively) appeared to be in a complete linkage disequilibrium with rs7043217 and was validated to be significantly associated with PD susceptibility with asYb8c4ins serving as a risk allele (P = 0.030, OR = 1.224, 95% CI = 1.020–1.470). Multiple functional analyses including ALDH1A1 mRNA expression in blood cells of carriers, and reporters of EGFP and luciferase showed that the asYb8c4ins had a suppressive activity on gene transcription. Mechanistic explorations suggested that the asYb8c4ins induced no changes in CpG methylation and mRNA splicing of ALDH1A1 and appeared no binding of transcription factors.

Conclusions
Our results consolidate an involvement of ALDH1 in PD pathogenesis. The asYb8c4 polymorphism may be a functional output of its linkage disequilibrium-linked single nucleotide polymorphisms.
Clinical prediction models for diagnosis of COVID-19 among adult patients: a validation and agreement study
Authors: Dardenne Nadia , Locquet Médéa , Diep Anh Nguyet , Gilbert Allison , Delrez Sophie , Beaudart Charlotte , Brabant Christian , Ghuysen Alexandre , Donneau Anne-Françoise , Bruyère Olivier 
Published: May 2022

Abstract
Background
Since the beginning of the pandemic, hospitals have been constantly overcrowded, with several observed waves of infected cases and hospitalisations. To avoid as much as possible this situation, efficient tools to facilitate the diagnosis of COVID-19 are needed.

Objective
To evaluate and compare prediction models to diagnose COVID-19 identified in a systematic review published recently using performance indicators such as discrimination and calibration measures.

Methods
A total of 1618 adult patients present at two Emergency Department triage centers and for whom qRT-PCR tests had been performed were included in this study. Six previously published models were reconstructed and assessed using diagnostic tests as sensitivity (Se) and negative predictive value (NPV), discrimination (Area Under the Roc Curve (AUROC)) and calibration measures. Agreement was also measured between them using Kappa’s coefficient and IntraClass Correlation Coefficient (ICC). A sensitivity analysis has been conducted by waves of patients.

Results
Among the 6 selected models, those based only on symptoms and/or risk exposure were found to be less efficient than those based on biological parameters and/or radiological examination with smallest AUROC values (< 0.80). However, all models showed good calibration and values above > 0.75 for Se and NPV but poor agreement (Kappa and ICC < 0.5) between them. The results of the first wave were similar to those of the second wave.

Conclusion
Although quite acceptable and similar results were found between all models, the importance of radiological examination was also emphasized, making it difficult to find an appropriate triage system to classify patients at risk for COVID-19.
Symptoms of post-traumatic stress and associations with sexual behaviour and PrEP preferences among young people in South Africa, Uganda and Zimbabwe
Authors: Webb Emily L. , Dietrich Janan J. , Ssemata Andrew S. , Nematadzira Teacler G. , Hornschuh Stefanie , Kakande Ayoub , Tshabalala Gugulethu , Muhumuza Richard , Mutonyi Gertrude , Atujuna Millicent , Bere Tarisai , Bekker Linda-Gail , Abas Melanie A. , Weiss Helen A. , Seeley Janet , Stranix-Chibanda Lynda , Fox Julie ,   for the CHAPS Study Team
Published: May 2022

Abstract
Background
It is not known whether post-traumatic stress disorder (PTSD) increases HIV-risk behaviours among young people in sub-Saharan Africa. We assessed associations of PTSD symptoms with sexual behaviour, HIV risk perception, and attitudes towards PrEP among young people taking part in the CHAPS community survey. We hypothesised that PTSD symptoms would increase sexual behaviours associated with HIV risk, hinder PrEP uptake and influence preference for daily versus on-demand PrEP.

Methods
Young people without HIV, aged 13–24 years, were purposively recruited in Johannesburg and Cape Town in South Africa, Wakiso in Uganda, and Chitungwiza in Zimbabwe, and surveyed on socio-demographic characteristics, PrEP knowledge and attitudes, sexual behaviour, HIV perception and salience, and mental health. PTSD symptoms were measured using the Primary Care PTSD Screen for the Diagnostic and Statistical Manual of Mental Disorders 5 (PC-PTSD-5). Logistic and ordinal logistic regression was used to assess associations between PC-PTSD-5 score and socio-demographic characteristics, sexual behaviour, HIV risk perception, PrEP attitudes, and substance use, adjusting for age, sex, setting, depression and anxiety.

Results
Of 1330 young people (51% male, median age 19 years), 522 (39%) reported at least one PTSD symptom. There was strong evidence that having a higher PC-PTSD-5 score was associated with reported forced sex (OR 3.18, 95%CI: 2.05–4.93), self-perception as a person who takes risks (OR 1.12, 95%CI: 1.04–1.20), and increased frequency of thinking about risk of HIV acquisition (OR 1.16, 95%CI: 1.08–1.25). PTSD symptoms were not associated with willingness to take PrEP, preference for on-demand versus daily PrEP, or actual HIV risk behaviour such as condomless sex.

Conclusions
Symptoms consistent with probable PTSD were common among young people in South Africa, Uganda and Zimbabwe but did not impact PrEP attitudes or PrEP preferences. Evaluation for PTSD might form part of a general assessment in sexual and reproductive health services in these countries. More work is needed to understand the impact of PTSD on HIV-risk behaviour, forced sex and response to preventive strategies including PrEP.
Feasibility and thematic analysis of narrative visualization materials with physical activity monitoring among breast cancer survivors
Authors: Bentley Jason R. , Yu Xiaoying , Karmarkar Amol M. , Downer Brian , Prochaska John , Lyons Elizabeth J. 
Published: May 2022

Abstract
Background
Breast cancer survivors have a unique risk for negative health outcomes. Engaging in routine physical activity (PA) can reduce these risks. However, PA levels are low among this population. Narrative visualization (NV) is a technique that uses drawings, photographs, and text to contextualize data, which may increase integrated regulation, or motivation related to personal values and identity. A PA intervention targeting breast cancer survivors using an NV strategy may improve PA behavior. The purpose of this study was to determine whether scrapbooking activities could successfully be used as an NV strategy for older (55+) breast cancer survivors.

Methods
Breast cancer survivors were given workbooks, wearable electronic activity monitors, instant cameras, and art supplies including a variety of stickers (e.g., emojis, affirmations). Participants were instructed to use these materials for 7 days. The workbook pages prompted participants to re-draw their daily activity graphs from the wearable’s mobile app, then annotate them with text, photographs, stickers, etc. to reflect what the data meant to them. Hybrid thematic analysis was used to analyze the photographs, drawings, and written content to identify emergent themes. Content analysis was also used to investigate use of stickers and photographs.

Results
Of the 20 consented women (mean age 67 ± 5 years, 45% non-Hispanic white), 3 participants were lost to follow-up or unable to complete the procedures. The NV procedures were successfully utilized by the remaining 17 participants, who collectively used 945 stickers over 7 days, most of which were emojis. Emojis were both positively and negatively valanced. Participants took a mean of 9 photos over 7 days and completed workbook questions regarding current PA and PA goals. Themes within the photos included family, specific locations, everyday objects, religion, and friends. Themes within the written portions of the workbook included family, chores and obligations, health, personal reflection, hobbies, and shopping.

Conclusions
The materials provided allowed breast cancer survivors to successfully use NV techniques to reflect on their PA data and behavior. These techniques show promise for promoting integrated regulation in activity monitoring interventions.

Trial registration
This study was funded by the National Cancer Institute (R21CA218543) beginning July 1, 2018.
Factors associated with serum CA125 level in women without ovarian cancer in the United States: a population-based study
Authors: Hu Xiao , Zhang Jingzhou , Cao Yu 
Published: May 2022

Abstract
Background
Cancer antigen 125 (CA125) is clinically used to monitor response to therapy in ovarian cancer and has been proposed for use in detecting ovarian cancer. This population-based study examines how demographic characteristics, gynecologic/reproductive history, chronic non-malignant medical conditions, history of non-ovarian cancer, lifestyle practices, and biomarkers of inflammation correlate with serum CA125 in both premenopausal and postmenopausal women without ovarian cancer across the United States.

Methods
Participants were identified from the National Health and Nutrition Examination Survey 2001–2002. Linear and logistic regression models were applied.

Results
Higher CA125 levels were found to correlate with younger age, Non-Hispanic White race/ethnicity, and lower body mass index. In premenopausal women (N = 1157), current smoking was associated with lower CA125 (− 24.95%, p = 0.008), and history of non-ovarian cancer was associated with higher CA125 (40.64%, p = 0.045) by multivariable linear regression; both current smoking (odds ratio (OR) = 0.42, p = 0.043) and oral contraceptive pill (OCP) use of 5–10 years (OR = 0.31, p = 0.032) were less likely to be associated with having CA125 level ≥ 35 U/ml by multivariable logistic regression. In postmenopausal women (N = 1116), coronary artery disease (CAD) history was associated with higher CA125 (28.27%, p = 0.047) by multivariable linear regression; history of CAD (OR = 5.00, p = 0.011), history of breastfeeding (OR = 2.46, p = 0.026), and increased CRP level (OR = 1.41, p = 0.042) were more likely to be associated with having CA125 level ≥ 35 U/ml by multivariable logistic regression.

Conclusions
Results suggest CA125 is lower in premenopausal women who are current smokers and OCP users of moderately longer duration but higher in those with non-ovarian cancer. CA125 is higher in those postmenopausal women with CAD, history of breastfeeding and elevated CRP level. These associations can inform clinical interpretation of individual patients’ CA125 levels.
The biallelic novel pathogenic variants in AGL gene in a chinese patient with glycogen storage disease type III
Authors: Wang Jing , Yu Yuping , Cai Chunquan , Zhi Xiufang , Zhang Ying , Zhao Yu , Shu Jianbo 
Published: May 2022

Abstract
Background
Glycogen storage disease type III (GSD III) is a rare autosomal recessive glycogenolysis disorder due to AGL gene variants, characterized by hepatomegaly, fasting hypoglycemia, hyperlipidemia, elevated hepatic transaminases, growth retardation, progressive myopathy, and cardiomyopathy. However, it is not easy to make a definite diagnosis in early stage of disease only based on the clinical phenotype and imageology due to its clinical heterogeneity.

Case presentation
We report a two-year-old girl with GSD III from a nonconsanguineous Chinese family, who presented with hepatomegaly, fasting hypoglycemia, hyperlipidemia, elevated levels of transaminases. Accordingly, Sanger sequencing, whole‑exome sequencing of family trios, and qRT-PCR was performed, which revealed that the patient carried the compound heterogeneous variants, a novel frameshift mutation c.597delG (p. Q199Hfs*2) and a novel large gene fragment deletion of the entire exon 13 in AGL gene. The deletion of AGL was inherited from the proband’s father and the c.597delG variant was from the mother.

Conclusions
In this study, we identified two novel variants c.597delG (p. Q199Hfs*2) and deletion of the entire exon 13 in AGL in a Chinese GSD III patient. We extend the mutation spectrum of AGL. We suggest that high-throughput sequencing technology can detect and screen pathogenic variant, which is a scientific basis about genetic counseling and clinical diagnosis.
Syrian national growth references for children and adolescents aged 2–20 years
Authors: Zamlout Ali , Alwannous Kamal , Kahila Ali , Yaseen Majd , Albadish Raneem , Aleid Morhaf , Hamzah Karina , Monther Mahmoud , Akkari Oudai , Hasan Amah , Hasan Manal , Khallouf Ammar , Obied Amjad , Schmidt Amna , Deeb Sara , Deeb Orwa , Eldin Judie Jalal , Ojaily Nour , Taifour Mohammad , Ghanem Qusai , Kabalan Younes , Alrstom Ali , Alhalabi Marwan 
Published: May 2022

Abstract
Background
During the past three decades, growth charts have become one of the principal tools for monitoring anthropometric development in individuals and populations as well. Growth references by the CDC and other countries have been widely used in our hospitals and healthcare units for clinical assessment of children’s development. The apparent overestimation and underestimation of many children's anthropometrics indicated the need to construct our own references. The objective of this study is to establish the national growth references for the Syrian population 2–20-year-old.

Methods
A multicenter cross-sectional sample of 13,548 subjects, aged 2–20 years, were recruited from various kindergartens, schools, and universities across the Syrian Arab Republic between February and May-2019. Response variables (stature, weight, and BMI) were fitted against age using P-splines and three empirical distributions: Box-Cox T, Box-Cox Power Exponential, and Box-Cox Cole and Green. Residuals diagnostic Q-tests and worm plots were used to check the validity of fitted models.

Results
Box-Cox T provided the best fit for stature-for-age, whereas Box-Cox Power Exponential provided the best fit for weight-for-age and BMI-for-age. Residuals diagnostics revealed adequate models fitting. BMI cutoffs revealed an increased prevalence of obesity (4.5% and 3.66%) and overweight (20.1% and 19.54%), for boys and girls respectively, in our population.

Conclusions
Growth charts are available for use now in our hospitals and healthcare units. For 0–2-year-old children, we recommend using the World Health Organization’s standards.
Racism in healthcare: a scoping review
Authors: Hamed Sarah , Bradby Hannah , Ahlberg Beth Maina , Thapar-Björkert Suruchi 
Published: May 2022

AbstractBackgroundRacism constitutes a barrier towards achieving equitable healthcare as documented in research showing unequal processes of delivering, accessing, and receiving healthcare across countries and healthcare indicators. This review summarizes studies examining how racism is discussed and produced in the process of delivering, accessing and receiving healthcare across various national contexts.MethodThe PRISMA guidelines for scoping reviews were followed and databases were searched for peer reviewed empirical articles in English across national contexts. No starting date limitation was applied for this review. The end date was December 1, 2020. The review scoped 213 articles. The results were summarized, coded and thematically categorized in regards to the aim.ResultsThe review yielded the following categories: healthcare users’ experiences of racism in healthcare; healthcare staff’s experiences of racism; healthcare staff’s racial attitudes and beliefs; effects of racism in healthcare on various treatment choices; healthcare staff’s reflections on racism in healthcare and; antiracist training in healthcare. Racialized minorities experience inadequate healthcare and being dismissed in healthcare interactions. Experiences of racism are associated with lack of trust and delay in seeking healthcare. Racialized minority healthcare staff experience racism in their workplace from healthcare users and colleagues and lack of organizational support in managing racism. Research on healthcare staff’s racial attitudes and beliefs demonstrate a range of negative stereotypes regarding racialized minority healthcare users who are viewed as difficult. Research on implicit racial bias illustrates that healthcare staff exhibit racial bias in favor of majority group. Healthcare staff’s racial bias may influence medical decisions negatively. Studies examining healthcare staff’s reflections on racism and antiracist training show that healthcare staff tend to construct healthcare as impartial and that healthcare staff do not readily discuss racism in their workplace.ConclusionsThe USA dominates the research. It is imperative that research covers other geo-political contexts. Research on racism in healthcare is mainly descriptive, atheoretical, uses racial categories uncritically and tends to ignore racialization processes making it difficult to conceptualize racism. Sociological research on racism could inform research on racism as it theoretically explains racism’s structural embeddedness, which could aid in tackling racism to provide good quality care.
A comparison of peer change agent selection methods: Evidence from a high-school based suicide preventive intervention
Authors: Pickering Trevor A. , Wyman Peter A. , Valente Thomas W. 
Published: May 2022

Abstract
Background
Peer-led interventions for adolescents are effective at accelerating behavioral change. The Sources of Strength suicide preventive program trains student peer change agents (peer leaders) in secondary schools to deliver prevention messaging and conduct activities that increase mental health coping mechanisms. The program currently has school staff select peer leaders. This study examined potential for more efficient program diffusion if peer leaders had been chosen under network-informed selection methods.

Methods
Baseline assessments were collected from 5,746 students at 20 schools. Of these, 429 were selected by adults as peer leaders who delivered intervention content through the school year. We created theoretical alternate peer leader sets based on social network characteristics: opinion leadership, centrality metrics, and key players. Because these sets were theoretical, we examined the concordance of these sets with the actual adult-selected peer leaders sets and correlated this metric with diffusion of intervention modalities (i.e., presentation, media, communication, activity) after the first year.

Results
The sets of adult-selected peer leaders were 13.3%—22.7% similar to theoretical sets chosen by other sociometric methods. The use of friendship network metrics produced peer leader sets that were more white and younger than the general student population; the Key Players method produced more representative peer leader sets. Peer opinion leaders were older and more white than the general population. Schools whose selected peer leaders had higher overlap with theoretical ones had greater diffusion of intervention media and peer communication.

Conclusions
The use of network information in school-based peer-led interventions can help create more systematized peer leader selection processes. To reach at-risk students, delivery of an indirect message, such as through a poster or video, may be required. A hybrid approach where a combination of visible, respected opinion leaders, along with strategically-placed key players within the network, may provide the greatest potential for intervention diffusion.