Objective:To explore the current status of undergraduate nursing students' professional self-efficacy, and analyze the influence of uncertainty stress on nursing students' professional self-efficacy.Methods:From April 10 to 17, 2020, the cluster convenience sampling was used to select 1 526 nursing undergraduates from four universities in Zhejiang Province as the research object. The cross-sectional survey was conducted with the General Information Questionnaire for Nursing Students, Professional Self-efficacy Questionnaire for Nurse Students (PSQNS) and the Uncertain Stress Questionnaire. Multiple linear regression was used to analyze the influencing factors of professional self-efficacy of nursing students. A total of 1 526 questionnaires were issued, and 1 474 valid questionnaires were returned with the effective response rate of 96.6%.Results:Among 1 474 undergraduate nursing students, the total PSQNS score was (91.10±14.11) , and the item average score was (3.37±0.52) , and the score rate was 67.48%, which was in the middle level. The results of multiple linear regression analysis showed that the preference for the nursing major, uncertainty stress, academic achievement in school, reasons for choosing the nursing major, and family economic status were the influencing factors of professional self-efficacy of undergraduate nursing students with statistical differences ( P<0.05) , which could explain 33.4% of the variation. Conclusions:The professional self-efficacy of undergraduate nursing students needs to be improved. Nursing educators can improve their professional self-efficacy by reducing the uncertainty stress of nursing students.

Pancreatic β-cell failure due to a reduction in function and mass has been defined as a primary contributor to the progression of type 2 diabetes (T2D). Reserving insulin-producing β-cells and hence restoring insulin production are gaining attention in translational diabetes research, and β-cell replenishment has been the main focus for diabetes treatment. Significant findings in β-cell proliferation, transdifferentiation, pluripotent stem cell differentiation, and associated small molecules have served as promising strategies to regenerate β-cells. In this review, we summarize current knowledge on the mechanisms implicated in β-cell dynamic processes under physiological and diabetic conditions, in which genetic factors, age-related alterations, metabolic stresses, and compromised identity are critical factors contributing to β-cell failure in T2D. The article also focuses on recent advances in therapeutic strategies for diabetes treatment by promoting β-cell proliferation, inducing non-β-cell transdifferentiation, and reprograming stem cell differentiation. Although a significant challenge remains for each of these strategies, the recognition of the mechanisms responsible for β-cell development and mature endocrine cell plasticity and remarkable advances in the generation of exogenous β-cells from stem cells and single-cell studies pave the way for developing potential approaches to cure diabetes.