Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,pr...Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the Anthropocene.The Eastern Golden Frog(Pelophylax plancyi)and BlackSpotted Frog(P.nigromaculatus)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East Asia.However,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic disturbances.Here,interspecific hybridization between P.plancyi and P.nigromaculatus at the population level was investigated in Shanghai.All except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study area.Asymmetric genetic introgression was detected by microsatellite markers,with 0.7%of P.plancyi and 14.6%of P.nigromaculatus identified as contemporary admixed individuals.Consistent with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant P.plancyi;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare P.nigromaculatus.The population density of P.plancyi and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of P.plancyi and P.nigromaculatus.Considering the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific hybridization.Thus,population monitoring and improvement of landscape connectivity between habitats would be needed to control the intensity of interspecific hybridization between P.plancyi and P.nigromaculatus in anthropogenic-disturbed environments.展开更多
The increased risk of mucosa-associated lymphoid tissue(MALT)lymphoma is closely associated with chronic antigenic stimulation,with infection being the most common cause of recurrence.Lesions are usually associated wi...The increased risk of mucosa-associated lymphoid tissue(MALT)lymphoma is closely associated with chronic antigenic stimulation,with infection being the most common cause of recurrence.Lesions are usually associated with the gastrointestinal tract,and the involvement of small intestinal is rare.Recent studies have established a close relationship between novel coronavirus 2019(COVID-19)and the occurrence and progression of various diseases.This article presents a rare case of a small intestinal MALT lymphoma.The patient was initially admitted with COVID-19 pneumonia and subsequently developed gastrointestinal bleeding during hospitalization.Medical and endoscopic treatments were ineffective,and an emergency exploratory laparotomy was performed.The affected segment of the small intestine was excised,and a pathological biopsy confirmed the diagnosis of MALT lymphoma.This case underscores the significance of raising clinical awareness of this condition among health care professionals.展开更多
Background:Currently,building resilience in nurses is recognized as an important factor that helps maintain their health and stay in their profession;thus,identifying which factors can help them build resilience is ne...Background:Currently,building resilience in nurses is recognized as an important factor that helps maintain their health and stay in their profession;thus,identifying which factors can help them build resilience is necessary.Methods:A cross-sectional survey design was used,and 1356 nurses from 11 general hospitals in Guangzhou,China,were assessed using the Chinese version of the Conner-Davidson Resilience Scale,the General Self-Efficacy Scale,the Simplified Coping Style Questionnaire,and the Job Stress Scale of Chinese nurses.The demographic characteristics of participants were also gathered.Results:The mean total score of nurses' resilience is 59.99 (SD 13.59),which was significantly lower (P < 0.001) than that of the general people in China.The regression analysis affirmed that the factors which influence the resilience of nurses include self-efficacy,coping style,job stress,and education level (R2 =49.4%,P < 0.001).Conclusion:Nurses had low resilience.They could not effectively cope with job challenges and recover from adversity.Strengthening self-efficacy,choosing active coping,decreasing job stress,and enhancing educational training can effectively improve their resilience.展开更多
Aromatherapy is the therapeutic use of oil from herbs, flowers, and other plants. The aim of this meta-analysis was to quantify the effectiveness of aromatherapy for laboring women. We searched five electronic databas...Aromatherapy is the therapeutic use of oil from herbs, flowers, and other plants. The aim of this meta-analysis was to quantify the effectiveness of aromatherapy for laboring women. We searched five electronic databases till November 15th 2013 including those Chinese and English language articles. A total of 4 eligible studies were identified. Aromatherapy was effective in reducing the length of labor, but there were no statistically significant effects in the use of pharmacological analgesia, spontaneous vaginal delivery, caesarean delivery and assisted vaginal birth. Due to the limited number of articles identified, the evidence is not sufficiently convincing that aromatherapy is an effective therapy for laboring women.展开更多
基金supported by the National Natural Science Foundation of China(32071529)the Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station(Z202204)+1 种基金Shanghai Key Lab for Urban Ecological Processes and EcoRestoration(SHUES2020B06,SHUES2021C04)the Fundamental Research Funds for the Central Universities.
文摘Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the Anthropocene.The Eastern Golden Frog(Pelophylax plancyi)and BlackSpotted Frog(P.nigromaculatus)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East Asia.However,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic disturbances.Here,interspecific hybridization between P.plancyi and P.nigromaculatus at the population level was investigated in Shanghai.All except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study area.Asymmetric genetic introgression was detected by microsatellite markers,with 0.7%of P.plancyi and 14.6%of P.nigromaculatus identified as contemporary admixed individuals.Consistent with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant P.plancyi;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare P.nigromaculatus.The population density of P.plancyi and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of P.plancyi and P.nigromaculatus.Considering the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific hybridization.Thus,population monitoring and improvement of landscape connectivity between habitats would be needed to control the intensity of interspecific hybridization between P.plancyi and P.nigromaculatus in anthropogenic-disturbed environments.
基金the Wuhan Young and Middle-aged Medical Backbone Personnel Training Project(No.2016(59)).
文摘The increased risk of mucosa-associated lymphoid tissue(MALT)lymphoma is closely associated with chronic antigenic stimulation,with infection being the most common cause of recurrence.Lesions are usually associated with the gastrointestinal tract,and the involvement of small intestinal is rare.Recent studies have established a close relationship between novel coronavirus 2019(COVID-19)and the occurrence and progression of various diseases.This article presents a rare case of a small intestinal MALT lymphoma.The patient was initially admitted with COVID-19 pneumonia and subsequently developed gastrointestinal bleeding during hospitalization.Medical and endoscopic treatments were ineffective,and an emergency exploratory laparotomy was performed.The affected segment of the small intestine was excised,and a pathological biopsy confirmed the diagnosis of MALT lymphoma.This case underscores the significance of raising clinical awareness of this condition among health care professionals.
文摘Background:Currently,building resilience in nurses is recognized as an important factor that helps maintain their health and stay in their profession;thus,identifying which factors can help them build resilience is necessary.Methods:A cross-sectional survey design was used,and 1356 nurses from 11 general hospitals in Guangzhou,China,were assessed using the Chinese version of the Conner-Davidson Resilience Scale,the General Self-Efficacy Scale,the Simplified Coping Style Questionnaire,and the Job Stress Scale of Chinese nurses.The demographic characteristics of participants were also gathered.Results:The mean total score of nurses' resilience is 59.99 (SD 13.59),which was significantly lower (P < 0.001) than that of the general people in China.The regression analysis affirmed that the factors which influence the resilience of nurses include self-efficacy,coping style,job stress,and education level (R2 =49.4%,P < 0.001).Conclusion:Nurses had low resilience.They could not effectively cope with job challenges and recover from adversity.Strengthening self-efficacy,choosing active coping,decreasing job stress,and enhancing educational training can effectively improve their resilience.
文摘Aromatherapy is the therapeutic use of oil from herbs, flowers, and other plants. The aim of this meta-analysis was to quantify the effectiveness of aromatherapy for laboring women. We searched five electronic databases till November 15th 2013 including those Chinese and English language articles. A total of 4 eligible studies were identified. Aromatherapy was effective in reducing the length of labor, but there were no statistically significant effects in the use of pharmacological analgesia, spontaneous vaginal delivery, caesarean delivery and assisted vaginal birth. Due to the limited number of articles identified, the evidence is not sufficiently convincing that aromatherapy is an effective therapy for laboring women.
