bluuebunny/crossref_metadata_2025_split huggingface dataset:
Local radiotherapy for murine breast cancer increases risk of metastasis by promoting the recruitment of M-MDSCs in lung
Authors: Zhang Zhengzheng , Yao Zhiyan , Zhang Zimeng , Cui Ling , Zhang Ling , Qiu Gang , Song Xiaotian , Song Shuxia 
Published: June 2023

Abstract
Background
Radiotherapy is one of the effective methods for treatment of breast cancer; however, controversies still exist with respect to radiotherapy for patients with TNBC. Here, we intend to explore the mechanism by which local radiotherapy promotes the recruitment of M-MDSCs in the lung and increases the risk of lung metastasis in TNBC tumor-bearing mice.

Methods
A single dose of 20 Gy X-ray was used to locally irradiate the primary tumor of 4T1 tumor-bearing mice. Tumor growth, the number of pulmonary metastatic nodules, and the frequency of MDSCs were monitored in the mice. Antibody microarray and ELISA methods were used to analyze the cytokines in exosomes released by irradiated (IR) or non-IR 4T1 cells. The effects of the exosomes on recruitment of MDSCs and colonization of 4T1 cells in the lung of normal BALB/c mice were observed with the methods of FCM and pathological section staining. T lymphocytes or 4T1 cells co-cultured with MDSCs were performed to demonstrate the inhibitory effect on T lymphocytes or accelerative migration effect on 4T1 cells. Finally, a series of in vitro experiments demonstrated how the exosomes promote the recruitment of M-MDSCs in lung of mice.

Results
Even though radiotherapy reduced the burden of primary tumors and larger lung metastatic nodules (≥ 0.4 mm2), the number of smaller metastases (< 0.4 mm2) significantly increased. Consistently, radiotherapy markedly potentiated M-MDSCs and decreased PMN-MDSCs recruitment to lung of tumor-bearing mice. Moreover, the frequency of M-MDSCs of lung was positively correlated with the number of lung metastatic nodules. Further, M-MDSCs markedly inhibited T cell function, while there was no difference between M-MDSCs and PMN-MDSCs in promoting 4T1 cell migration. X-ray irradiation promoted the release of G-CSF, GM-CSF and CXCl1-rich exosomes, and facilitated the migration of M-MDSCs and PMN-MDSCs into the lung through CXCL1/CXCR2 signaling. While irradiated mouse lung extracts or ir/4T1-exo treated macrophage culture medium showed obvious selective chemotaxis to M-MDSCs. Mechanistically, ir/4T1-exo induce macrophage to produce GM-CSF, which further promoted CCL2 release in an autocrine manner to recruit M-MDSCs via CCL2/CCR2 axis.

Conclusions
Our work has identified an undesired effect of radiotherapy that may promote immunosuppressive premetastatic niches formation by recruiting M-MDSCs to lung. Further studies on radiotherapy combined CXCR2 or CCR2 signals inhibitors were necessary.
Experience of South and Southeast Asian minority women in Hong Kong during COVID-19 pandemic: a qualitative study
Authors: Chung Roger Yat-Nork , Lee Tobey Tsz-Yan , Chan Siu-Ming , Chung Gary Ka-Ki , Chan Yat-Hang , Wong Samuel Yeung-Shan , Lai Eric , Wong Hung , Yeoh Eng Kiong , Marmot Michael , Woo Jean 
Published: June 2023

Abstract
Background
Hong Kong has a relatively low incidence rate of COVID-19 across the globe. Nevertheless, ethnic minorities in Hong Kong, especially South Asians (SAs) and Southeast Asians (SEAs), face numerous physical, mental, social, economic, cultural and religious challenges during the pandemic. This study explores the experiences of SA and SEA women in a predominantly Chinese metropolitan city.

Methods
Ten SA and SEA women were recruited and face-to-face interviews were conducted. Questions about participants’ daily life experience, physical and mental health conditions, economic situation and social interaction amid COVID-19 pandemic were asked to assess the impact of COVID-19.

Results
SAs and SEAs have a distinctive family culture, and women experienced significant physical and mental impact of COVID-19 due to their unique gender role in the family. In addition to taking care of their family in Hong Kong, SA and SEA women also had to mentally and financially support family members residing in their home countries. Access to COVID-related information was restricted due to language barrier. Public health measures including social distancing imposed extra burden on ethnic minorities with limited social and religious support.

Conclusions
Even when COVID-19 incidence rate is relatively low in Hong Kong, the pandemic made life even more challenging for SAs and SEAs, which is a community already struggling with language barriers, financial woes, and discrimination. This in turn could have led to greater health inequalities. Government and civil organizations should take the social determinants of health inequalities into account when implementing COVID-19-related public health policies and strategies.
Optogenetic engineered umbilical cord MSC-derived exosomes for remodeling of the immune microenvironment in diabetic wounds and the promotion of tissue repair
Authors: Zhao Xin , Fu Luoqin , Zou Hai , He Yichen , Pan Yi , Ye Luyi , Huang Yilin , Fan Weijiao , Zhang Jungang , Ma Yingyu , Chen Jinyang , Zhu Mingang , Zhang Chengwu , Cai Yu , Mou Xiaozhou 
Published: June 2023

Abstract
Background
Angiogenesis and tissue repair in chronic non-healing diabetic wounds remain critical clinical problems. Engineered MSC-derived exosomes have significant potential for the promotion of wound healing. Here, we discuss the effects and mechanisms of eNOS-rich umbilical cord MSC exosomes (UCMSC-exo/eNOS) modified by genetic engineering and optogenetic techniques on diabetic chronic wound repair.

Methods
Umbilical cord mesenchymal stem cells were engineered to express two recombinant proteins. Large amounts of eNOS were loaded into UCMSC-exo using the EXPLOR system under blue light irradiation. The effects of UCMSC-exo/eNOS on the biological functions of fibroblasts and vascular endothelial cells in vitro were evaluated. Full-thickness skin wounds were constructed on the backs of diabetic mice to assess the role of UCMSC-exo/eNOS in vascular neogenesis and the immune microenvironment, and to explore the related molecular mechanisms.

Results
eNOS was substantially enriched in UCMSCs-exo by endogenous cellular activities under blue light irradiation. UCMSC-exo/eNOS significantly improved the biological functions of cells after high-glucose treatment and reduced the expression of inflammatory factors and apoptosis induced by oxidative stress. In vivo, UCMSC-exo/eNOS significantly improved the rate of wound closure and enhanced vascular neogenesis and matrix remodeling in diabetic mice. UCMSC-exo/eNOS also improved the inflammatory profile at the wound site and modulated the associated immune microenvironment, thus significantly promoting tissue repair.

Conclusion
This study provides a novel therapeutic strategy based on engineered stem cell-derived exosomes for the promotion of angiogenesis and tissue repair in chronic diabetic wounds.

Graphic Abstract
Prevalence, indications, and complications of caesarean section in health facilities across Nigeria: a systematic review and meta-analysis
Authors: Osayande Itohan , Ogunyemi Olakunmi , Gwacham-Anisiobi Uchenna , Olaniran Abimbola , Yaya Sanni , Banke-Thomas Aduragbemi 
Published: June 2023

Abstract
Background
Over 80,000 pregnant women died in Nigeria due to pregnancy-related complications in 2020. Evidence shows that if appropriately conducted, caesarean section (CS) reduces the odds of maternal death. In 2015, the World Health Organization (WHO), in a statement, proposed an optimal national prevalence of CS and recommended the use of Robson classification for classifying and determining intra-facility CS rates. We conducted this systematic review and meta-analysis to synthesise evidence on prevalence, indications, and complications of intra-facility CS in Nigeria.

Methods
Four databases (African Journals Online, Directory of Open Access Journals, EBSCOhost, and PubMed) were systematically searched for relevant articles published from 2000 to 2022. Articles were screened following the PRISMA guidelines, and those meeting the study’s inclusion criteria were retained for review. Quality assessment of included studies was conducted using a modified Joanna Briggs Institute’s Critical Appraisal Checklist. Narrative synthesis of CS prevalence, indications, and complications as well as a meta-analysis of CS prevalence using R were conducted.

Results
We retrieved 45 articles, with most (33 (64.4%)) being assessed as high quality. The overall prevalence of CS in facilities across Nigeria was 17.6%. We identified a higher prevalence of emergency CS (75.9%) compared to elective CS (24.3%). We also identified a significantly higher CS prevalence in facilities in the south (25.5%) compared to the north (10.6%). Furthermore, we observed a 10.7% increase in intra-facility CS prevalence following the implementation of the WHO statement. However, none of the studies adopted the Robson classification of CS to determine intra-facility CS rates. In addition, neither hierarchy of care (tertiary or secondary) nor type of facility (public or private) significantly influenced intra-facility CS prevalence. The commonest indications for a CS were previous scar/CS (3.5–33.5%) and pregnancy-related hypertensive disorders (5.5–30.0%), while anaemia (6.4–57.1%) was the most reported complication.

Conclusion
There are disparities in the prevalence, indications, and complications of CS in facilities across the geopolitical zones of Nigeria, suggestive of concurrent overuse and underuse. There is a need for comprehensive solutions to optimise CS provision tailor-made for zones in Nigeria. Furthermore, future research needs to adopt current guidelines to improve comparison of CS rates.
Mandibular reconstruction after excision of recurrent odontogenic keratocyst using a novel mandibular distraction osteogenesis method– a case report
Authors: Lin Haiyun , Zhong Xiaoxia , Zhou Nuo , Huang Xuan-Ping 
Published: June 2023

Abstract
Background
Odontogenic keratocyst is one of the most common benign odontogenic neoplasms with a high recurrence rate. Its resection has the potential to lead to mandibular segmental defects. In this case report, we describe a patient with odontogenic keratocyst who underwent radical resection using a novel distraction osteogenesis (DO) method to reconstruct mandibular segmental defect.

Case presentation
This case report describes a 19-year-old woman with odontogenic keratocyst of the mandible that recurred after multiple curettages and eventually necessitated radical resection. Mandibular segmental defect after radical resection was reconstructed using a novel DO method that involved directly contacting the segment ends of the defect without the transport disk. However, the distractor broke during the retention period, and a molding titanium plate was used for fixation. This novel distraction method achieved mandibular reconstruction and restored mandibular function and contour.
Barriers and facilitating factors of care coordination for children with spinal muscular atrophy type I and II from the caregivers' perspective: an interview study
Authors: Willems Jana , Bablok Isabella , Farin-Glattacker Erik , Langer Thorsten 
Published: June 2023

Abstract
Background
Children with medical complexity (CMC) require long-term care accompanied by different health- and social care professionals. Depending on the severity of the chronic condition, caregivers spend a lot of time coordinating appointments, communicating between providers, clarifying social legal issues, and more. Effective care coordination is seen as key to addressing the fragmented care that CMC and their families often face. Spinal muscular atrophy (SMA) is a rare genetic, neuromuscular disease which care involves drug therapy and supportive treatment. We examined the care coordination experiences through a qualitative interview analysis of n = 21 interviews with caregivers of children with SMA I or SMA II.

Results
The code system consists of 7 codes and 12 sub-codes. “Disease and coordination management of the caregivers” describes the management of coordination-related illness demands. “General conditions of care” include enduring organizational aspects of the care network. “Expertise and skills” refers to both parent and professional expertise. “Coordination structure” describes the assessment of existing coordination mechanisms as well as the need for new ones. “Information exchange” defines the information exchange between professionals and parents as well as the exchange of parents among themselves and the perceived exchange between professionals. “Role distribution in care coordination” summarizes parents' “distribution” of coordinative roles among care network actors (including their own). “Quality of relationship” describes the perceived quality of the relationship between professionals and family.

Conclusion
Care coordination is influenced peripherally (e.g., by general conditions of care) and directly (e.g., by coordination mechanisms, interaction in the care network). Access to care coordination appears to be dependent on family circumstances, geographic location, and institutional affiliation. Previous coordination mechanisms were often unstructured and informal. Care coordination is frequently in the hands of caregivers mainly as the care network’s interface. Coordination is necessary and must be addressed on an individual basis of existing resources and family barriers. Existing coordination mechanisms in the context of other chronic conditions could also work for SMA. Regular assessments, centralized shared care pathways, and staff training and empowerment of families for self-management should be central components of all coordination models.
Trial registration: German Clinical Trials Register (DRKS): DRKS00018778; Trial registration date 05. December 2019—Retrospectively registered; https://apps.who.int/trialsearch/Trial2.aspx?TrialID=DRKS00018778.
Conventional therapy for genital herpesvirus and remission of HPV-related lesions: a case series
Authors: Balestrieri Maria , Carnovale-Scalzo Caterina , Garbuglia Anna Rosa , Chiantore Maria Vincenza , Accardi Luisa , Di Bonito Paola 
Published: June 2023

AbstractThis report covers the case of 7 women affected by pathologies related to genital Herpesvirus and Papillomavirus. They were referred to the gynaecology outpatient clinic for colposcopic examination, and received pharmacological antiviral treatment. The patients presented clinical signs of genital Herpesvirus infections in the cervix and vulva. Cervical lesions and condylomatosis, which are characteristic of Papillomavirus infections were also detected, and patients underwent cervical cancer screening. Patients received oral and topical treatment with Acyclovir or oral treatment with Valacyclovir. During weekly or biweekly gynaecological follow-up visits, patients showed different times of remission of genital Herpesvirus. During the antiviral treatments, the vulvar and cervical Papillomavirus lesions also showed complete resolution with restitutio ad integrum of the tissues, and no recurrence at follow-up visits. Herpesvirus and Papillomavirus infections are often associated in genital infections and, as sexual transmitted infections, share the same risk factors. In the cases presented, the observed remission of HPV-related pathologies during Acyclovir and Valaciclovir treatments may suggest that antivirals are also effective in the treatment of HPV lesions. The cases described could pave the way for further investigations and clinical studies.
Cost of peer mystery shopping to increase cultural competency in community clinics offering HIV/STI testing to young men who have sex with men: results from the get connected trial
Authors: Phillips Victoria L. , Xue Ashley , Castillo Marné , Santiago Dalia , Wimbly Taylor , Hightow-Weidman Lisa B. , Stephenson Rob , Bauermeister José A. 
Published: June 2023

AbstractIntroductionCultural competency has been identified as a barrier to lesbian, gay, bisexual and transgender (LGBT) populations seeking care. Mystery shopping has been widely employed in the formal health care sector as a quality improvement (QI) tool to address specific client needs. The approach has had limited use in community-based organizations due in part to lack of knowledge and resource requirement concerns. Several mystery shopping initiatives are now being implemented which focus on the LGBT population with the goal of reducing barriers to accessing care. One subset targets men who have sex with men (MSM) to increase uptake of human immunodeficiency virus (HIV) testing. No study investigates the costs of these initiatives. Get Connected was a randomized control trial with the objective of increasing uptake of HIV-prevention services among young men who have sex with men (YMSM) through use of a resource-locator application (App). The initial phase of the trial employed peer-led mystery shopping to identify culturally competent HIV testing sites for inclusion in the App. The second phase of the trial randomized YMSM to test the efficacy of the App. Our objective was to determine the resource inputs and costs of peer-led mystery shopping to identify clinics for inclusion in the App as costs would be critical in informing possible adoption by organizations and sustainability of this model.MethodsThrough consultation with study staff, we created a resource inventory for undertaking the community-based, peer-led mystery shopping program. We used activity-based costing to price each of the inputs. We classified inputs as start-up and those for on-going implementation. We calculated costs for each category, total costs and cost per mystery shopper visit for the four-month trial and annually to reflect standard budgeting periods for data collected from September of 2019 through September of 2020.ResultsRecruitment and training of peer mystery shoppers were the most expensive tasks. Average start-up costs were $10,001 (SD $39.8). Four-month average implementation costs per visit were $228 (SD $1.97). Average annual implementation costs per visit were 33% lower at $151 (SD $5.60).ConclusionsPeer-led, mystery shopping of HIV-testing sites is feasible, and is likely affordable for medium to large public health departments.
Factors associated with successful publication for systematic review protocol registration: an analysis of 397 registered protocols
Authors: Minh Le Huu Nhat , Le Huu-Hoai , Tawfik Gehad Mohamed , Makram Omar Mohamed , Tieu Thuan , Tai Luu Lam Thang , Hung Dang The , Tran Van Phu , Shahin Karim Mohamed , Abozaid Ali Ahmed-Fouad , Shah Jaffer , Nam Nguyen Hai , Huy Nguyen Tien 
Published: June 2023

Abstract

Background
Meta-analyses are on top of the evidence-based medicine pyramid, yet many of them are not completed after they are begun. Many factors impacting the publication of meta-analysis works have been discussed, and their association with publication likelihood has been investigated. These factors include the type of systematic review, journal metrics, h-index of the corresponding author, country of the corresponding author, funding sources, and duration of publication. In our current review, we aim to investigate these various factors and their impact on the likelihood of publication. A comprehensive review of 397 registered protocols retrieved from five databases was performed to investigate the different factors that might affect the likelihood of publication. These factors include the type of systematic review, journal metrics, h-index of the corresponding author, country of the corresponding author, funding sources, and duration of publication.

Results
We found that corresponding authors in developed countries and English-speaking countries had higher likelihoods of publication: 206/320 (p = 0.018) and 158/236 (p = 0.006), respectively. Factors affecting publications are the countries of corresponding author (p = 0.033), whether they are from developed countries (OR: 1.9, 95% CI: 1.2–3.1, p = 0.016), from English-speaking countries (OR: 1.8, 95% CI: 1.2–2.7, p = 0.005), update status of the protocol (OR: 1.6, 95% CI: 1.0–2.6, p = 0.033), and external funding (OR: 1.7, 95% CI: 1.1–2.7, p = 0.025). Multivariable regression retains three variables as significant predictors for the publication of a systematic review: whether it is the corresponding author from developed countries (p = 0.013), update status of the protocol (p = 0.014), and external funding (p = 0.047).

Conclusion
Being on top of the evidence hierarchy, systematic review and meta-analysis are the keys to informed clinical decision-making. Updating protocol status and external funding are significant influences on their publications. More attentions should be paid to the methodological quality of this type of publication.
Incorporating economic methods into Cochrane systematic reviews: case studies in brain tumour research
Authors: Kernohan Ashleigh , Robinson Tomos , Vale Luke 
Published: June 2023

Abstract
Background
Cochrane systematic reviews have established methods for identifying and critically appraising empirical evidence in health. In addition to evidence regarding the clinical effectiveness of interventions, the resource implications of such interventions can have a huge impact on a decision maker’s ability to adopt and implement them. In this paper, we present examples of the three approaches to include economic evidence in Cochrane reviews.

Methods
The Cochrane Handbook presents three different methods of integrating economic evidence into reviews: the Brief Economic Commentary (BEC), the Integrated Full Systematic Review of Economic Evaluations (IFSREE) and using an Economic Decision Model. Using the examples from three different systematic reviews in the field of brain cancer, we utilised each method to address three different research questions. A BEC was utilised in a review that evaluates the long-term side effects of radiotherapy (with or without chemotherapy). An IFSREE was utilised in a review comparing different treatment strategies for newly diagnosed glioblastoma in the elderly. Finally, an economic model was included in a review assessing diagnostic test accuracy for tests of codeletion of chromosomal arms in people with glioma.

Results
The BEC mirrored the results of the main review and found a paucity of quality evidence with regard to the side effects of radiotherapy in those with glioma. The IFSREE identified a single economic evaluation regarding glioblastoma in the elderly, but this study had a number of methodological issues. The economic model identified a number of potentially cost-effective strategies for tests for codeletion of chromosomal arms 1p and 19q in people with glioma.

Conclusions
There are strengths and limitations of each approach for integrating economic evidence in Cochrane systematic reviews. The type of research question, resources available and study timeline should be considered when choosing which approach to use when integrating economic evidence.
EZH2 in hepatocellular carcinoma: progression, immunity, and potential targeting therapies
Authors: Wang Bohan , Liu Yachong , Liao Zhibin , Wu Haofeng , Zhang Bixiang , Zhang Lei 
Published: June 2023

AbstractHepatocellular carcinoma (HCC) is the leading cause of cancer-related death. The accumulation of genetic and epigenetic changes is closely related to the occurrence and development of HCC. Enhancer of zeste homolog 2 (EZH2, a histone methyltransferase) is suggested to be one of the principal factors that mediates oncogenesis by acting as a driver of epigenetic alternation. Recent studies show that EZH2 is widely involved in proliferation and metastasis of HCC cells. In this review, the functions of EZH2 in HCC progression, the role of EZH2 in tumor immunity and the application of EZH2-related inhibitors in HCC therapy are summarized.