CD13 is a multifunctional cell surface molecule that regulates inflammatory and angiogenic mechanisms in vitro, but its contribution to these processes in vivo or potential roles in stem cell biology remains unexplored. We investigated the impact of loss of CD13 on a model of ischemic skeletal muscle injury that involves angiogenesis, inflammation, and stem cell mobilization. Consistent with its role as an inflammatory adhesion molecule, lack of CD13 altered myeloid trafficking in the injured muscle, resulting in cytokine profiles skewed toward a prohealing environment. Despite this healing-favorable context, CD13^KO animals showed significantly impaired limb perfusion with increased necrosis, fibrosis, and lipid accumulation. Capillary density was correspondingly decreased, implicating CD13 in skeletal muscle angiogenesis. The number of CD45−/Sca1−/α7-integrin+/β1-integrin+ satellite cells was markedly diminished in injured CD13^KO muscles and adhesion of isolated CD13^KO satellite cells was impaired while their differentiation was accelerated. Bone marrow transplantation studies showed contributions from both host and donor cells to wound healing. Importantly, CD13 was coexpressed with Pax7 on isolated muscle-resident satellite cells. Finally, phosphorylated-focal adhesion kinase and ERK levels were reduced in injured CD13^KO muscles, consistent with CD13 regulating satellite cell adhesion, potentially contributing to the maintenance and renewal of the satellite stem cell pool and facilitating skeletal muscle regeneration. Stem Cells 2014;32:1564–1577

Background: The COVID-19 pandemic jeopardized the traditional academic learning calendars due to the closing of all educational institutions across the globe. To keep up with the flow of learning, most of the educational institutions shifted toward e-learning. However, the students’ e-learning preference and e-learning readiness did not identify, particularly among the Bangladeshi female nursing students, where those can pose serious challenges. A cross-sectional study was carried out among the female nursing students between December 26, 2020, and January 11, 2021. A total of 237 students were recruited who have enrolled in e-learning at least the last 30 days of the participation. Multivariable linear regression models were fitted to find the association of students’ preference, e-learning readiness domains, and other variables. Results: A cross-sectional study was conducted among the female nursing students to assess perceived e-learning readiness in the subdomains of readiness; availability, technology use, self-confidence, acceptance and training. The findings of the study revealed that the prevalence of preference for e-learning was 43.46%. The students did not prefer e-learning compared to ‘prefer group’ has significantly less availability of technology (β = − 3.01, 95% CI − 4.46, − 1.56), less use of technology (β = − 3.08, 95% CI − 5.11, − 1.06), less self-confidence (β = − 4.50, 95% CI − 7.02, − 1.98), less acceptance (β = − 5.96, 95% CI − 7.76, − 4.16) and less training need (β = − 1.86, 95% CI − 2.67, − 1.06). The age, degree, residence, parents’ highest education, having a single room, and having any eye problems were significantly associated with the variation of availability of technology, use of technology, self-confidence, acceptance, and training need of e-learning. Conclusions: The outcomes of the study could be helpful while developing an effective and productive e-learning infrastructure regarding the preparedness of nursing colleges for the continuation of academia in any adverse circumstances like the COVID-19 pandemic.

Physician burnout is a global concern that can lead to exhaustion, ineffectiveness, and poor health outcomes. Burnout has been linked to a variety of societal and professional variables worldwide. This cross-sectional, multi-centered study was conducted by face-to-face interviews between April 2019 and December 2021 at sixty-two (62) tertiary level hospitals to identify potential risk factors for burnout among Bangladeshi physicians, which is essential for preventing adverse impact on their well-being, improving overall quality of life, and facilitating measures to manage stress and maintain a healthy work-life balance. A simple random sampling technique in conjunction with a structured questionnaire was used to collect a total of 1434 responses, assuming 20 % of the sample as non-responsive. Univariate, bivariate, and multinomial logistic regression statistical analyses were performed to determine the risk factors and associate the level of severity. The distribution of burnout status differs significantly at distinct covariate levels, such as working place, working hour, prevalence of potential interpersonal conflicts (subsequent increase of adjusted odds ratios i.e.; 6.52, 8.82, 11.41, and 37.07 is observed for physicians having interpersonal conflicts with both co-workers & family members), job dissatisfaction, annoyed feeling while dealing with patients (adjusted odds ratios are 529.68, 518.26,983.87 and 849.57 respectively) and some other significant factors of the physicians. This study also reveals that the female physicians, physicians with age 40–49, physicians with additional liabilities, physicians with job dissatisfaction, less salary compared to the workload, less flexibility and security at the job sector as well as obese physicians are at high risk of burnout. These results are statistically significant with a p value ≤ 0.05. To reduce burnout of Bangladeshi physicians, it is necessary to address the risk factors, create supportive workplaces, maintain a healthy work-life balance, provide opportunities for self-care, and promote mental health.

Background: Mucormycosis, a severe fungal infection, is an emerging public health concern during the COVID-19 pandemic. This study aimed to investigate the perception of mucormycosis among Bangladeshi healthcare workers. Results: An exploratory cross-sectional study was carried out among the Bangladeshi healthcare workers from May 25, 2021, to June 5, 2021. The study found 422 responses from the healthcare workers of Bangladesh. Among the respondents, nearly half of them (45.26%) were doctors (n = 191). This study explored that the healthcare workers’ mucormycosis perception scores were significantly associated with their age, gender, profession, monthly income, marital status, job type, and death of friends and family members due to COVID-19. Conclusions: This study emphasized the healthcare workers’ mucormycosis perception along with other associated factors. The findings could help policymakers to mitigate mucormycosis and related infectious diseases emergencies in the post-COVID-19 situation.

Depression, anxiety, and stress have surged worldwide, including in Bangladesh during the COVID-19 pandemic. This study aimed to assess the mental health condition of the Bangladeshi population during this pandemic. A cross-sectional study was carried out online between Feb 17, 2021, and Apr 8, 2021, during the lockdown period in Bangladesh with structured questions of the DASS-21 (Depression Anxiety Stress Scales-21), and about 310 responses were collected for the study purpose. One-way ANOVA and statistical analysis were performed by STATA-13 to determine the statistical significance. Depression was found to be significantly associated (p < 0.05) with both level of education (higher level observed among postgraduates) and previous psychological intervention (higher rate of being exposed to psychiatrists earlier). Comparing normal, mild, moderate and severe levels, the most common level of depression was moderate (28.06%) among the respondents, along with highly severe anxiety (22.26%) and moderate stress (18.39%). Participant’s living area was significantly associated with depression (p = 0.033) and anxiety (p = 0.014), with individuals residing in urban areas exhibiting higher rates. Despite their adverse mental health status during the pandemic, only 36 out of 310 (12%) participants visited psychologists or psychiatrists. There remains substantial stigma around seeking formal mental health treatment in Bangladesh, such as low compliance rates even for talk therapy. Government organizations and NGOs should raise awareness among the public by conducting community-level campaigns, offering state-level insurance, initiating peer support programs, and using digital space to familiarize people with mental health issues.