BACKGROUND:Mesenchymal stem celltransplantation promoted skin repair in trauma via various regulatory mechanisms and inhibited scar formation. At present, many scholars believed that bioactive factors secreted by mesenchymal stem cells played an important role.
OBJECTIVE:To investigate the effects of bone marrow mesenchymal stem cellconditioned medium on the proliferation and col agen synthesis of hypertrophic scar fibroblasts.
METHODS:Human bone marrow mesenchymal stem cells and hypertrophic scar fibroblasts were isolated and cultured, and bone marrow mesenchymal stem cellconditioned medium was prepared. Hypertrophic scar fibroblasts were cultured in vitro with 12, 24, and 48 hour-col ected conditioned medium for 24 hours, which was compared with blank control group. The proliferation of cells was determined by CCK-8. Type I and type III col agen expression in hypertrophic scar fibroblasts was detected using real-time PCR.
RESULTS AND CONCLUSION:Compared with the blank control group, 24 and 48 hour-col ected conditioned medium significantly inhibited the proliferation of hypertrophic scar fibroblasts (P<0.01), and also suppressed col agen synthesis of hypertrophic scar fibroblasts (P<0.01). Results suggested that bone marrow mesenchymal stem cellconditioned medium inhibited the proliferation and col agen synthesis of hypertrophic scar fibroblasts by secreting anti-fibrotic bioactive factors, which may provide new theoretical supports for celltherapy to reduce cutaneous scarring.

Objective To investigate the mental health states of health system staffs in a district of Chongqing municipality. Methods Seven hundred and seventy-three health system staffs were taken as the research subjects for conducting the investigation by the Symptoms Checklist-90 (SCL-90).With the total SCL-90 score >160 as the positive psychological symptom,the total mean scores of SCL-90 and the 9 items of factor score of somatization,obsession,personal relations,depression,anxiety,hostility,dread, paranoid and psychotics were performed the statistical analysis.Results The positive rate of psychological symptoms in 773 health system staffs was 17.46% (135/773),among them which in the clinical nurses,clinicians and nonclinical staffs were 23.20%(58/250),15.63%(50/320)and 13.30%(27/203)respectively.The somatization and obsession scores of the health system staffs in this district were obviously higher than those of the national norm (P <0.05),while their personal relations and paranoid scores were obviously lower than those of the national norm(P <0.01).The paranoid scores of the staffs in the district health units were higher than those of the staffs worked in town health units(P <0.05),and other 8 items of factor score and the total mean scores were significantly higher than those in the town health unit staffs (P <0.01).The scores of obsession,depression,anxiety,hostility and the total mean scores of the clinical nurses were significantly higher than those of the clinicians (P <0.01),while scores of so-matization,personal relations,paranoid and psychotics had no significant differences between them(P > 0.05).The total mean scores of the clinical nurses were higher than those of the non-clinical staffs(P <0.05).Conclusion The scores of multiple factors had significant differences between the health system staffs in this district and the national norm.The psychological health status in the clinicians was poorer than that in the non-clinical staffs,especially the psychological health status in the clinical nurses were much poorer.

Objective To evaluate the clinical effect and efficacy of endoscopy treatment for isolated gastric varices 1 with tissue glue and metal clips. Metheds The clinical date of 21 patients who treated tissue glue and metal clips were retrospectively analyzed from Jan 2015 to Dec 2016. Results The treatments were completed successfully and reviewed by endoscopy after 1 week, 1 month, 3 months, 6 months. The gastric varices were reduced, and the serious complications of bleeding, embolism were little. Conclusion The endoscopy treatment for isolated gastric varices 1 with tissue glue and metal clips is contributed to clinical effect, and the treatment provides a reference for clinical treatment.

ObjectiveTo investigate the effect of massage therapy on cerebral palsy children with strabismus.Methods60 cerebral palsy children with strabismus were divided into the treatment group (30 cases) and control group (30 cases). Children of the treatment group were treated with massage therapy "YangGan RouJin Fa", those of the control group were not given any treatment, 30 strabismus children without cerebral palsy were treated with massage therapy "YangGan RouJin Fa" as the observation group.ResultsEffect of the treatment group was significantly different from the control group (P<0.01), and observation group (P<0.05).Conclusionmassage therapy "YangGan RouJin Fa" is a efficient method to strabismus in cerebral palsy children.

Objective To analyze the clinical and molecular genetic characterizations of X-linked adrenal dysplasia congenita(AHC) onset in infant.Methods Seven children (from 7 families) with X-linked AHC who were admitted to the Department of Endocrinology,Genetics and Metabolism,Children's Hospital Affiliated to Zhengzhou University,from July 2012 to June 2017 were selected.All patients were screened for dosage-sensitive-sex reversal-adrenal hypoplasia congenital critical region on the X chromosome gene1 (DAX1/NR0B1) mutations.The clinical manifestation and laboratory examination were analyzed,their clinical characterizations were summarized.Results Seven patients were all male,the onset age of the patients were from after birth to 7 months old,and 4 patients (4 families) had a family history of X-linked recessive inheritance.The clinical manifestations were skin pigmentation [100.0％ (7/7 cases)],vomiting [71.4％ (5/7 cases)],no weight gain [57.1％ (4/7 cases)] and poor spirit [28.6％ (2/7 cases)].Laboratory tests showed that hyperkalemia and hyponatremia,increased coricotrophin,normal or decreased cortisol,17α-hydroxyprogesterone,progesterone,aldosterone and dehydroepiandrosterone.Testosterone levels increased in 5 patients.The abnormalities of adrenal glands imaging could be seen in 2 patients.Two patients were misdiagnosed as congenital adrenal cortical hyperplasia.Then the definitive diagnosis were made by genetic test.DAX1/ NR0B1 gene mutations were found in all patients.Five patients were novel mutations (c.114_126del,c.872G ＞ A,c.56delG,c.884T ＞ G,c.1217delG).Conclusions The clinical manifestations of X-linked AHC with infant onset include pigmentation,poor spirit and growth retardation,which should be differentiated from congenital adrenal cortical hyperplasia.Hormone levels such as elevated blood 17α-hydroxyprogesterone and family history are the main identification points,and AHC cannot be excluded when testosterone level increases.Five novel mutations are found in this study,which enrich the gene database.

Objective:To evaluate the trend and hotspots of the research on cognitive frailty in China and abroad through literature visualization analysis.Methods:Literature related to cognitive frailty were retrieved from the databases of CNKI, Wanfang, VIP and Web of Science from January 1, 2013 to August 31, 2022 with"cognitive frailty""cognitive decline"and"cognitive impairment"as retrieval terms. Based on the visualization software CiteSpace and VOSviewer, the network map analysis was conducted on the number of publications, journal distribution, country distribution and cooperation, institution distribution and cooperation and research hotspots.Results:A total of 2 500 literatures were retrieved, including 151 in Chinese and 2 349 in English. The number of publications showed an increasing trend with time. Among Chinese journals, Chin J Mod Nurs published the most literature (10 articles), while BMC Geriatr published the most literature (105 articles) in English journals. The top 5 countries in the number of English literature published were the United States (608 articles), the United Kingdom (295 articles), Italy (271 articles), China (252 articles) and Canada (195 articles). The top 5 institutions in the number of Chinese literature published were Fudan University (12 articles), Capital Medical University (10 articles), Zhengzhou University (7 articles), Central South University (5 articles) and Huazhong University of Science and Technology (5 articles). The National Center For Geriatrics Gerontology in Japan published the most English articles (74 articles). A total of 22 Chinese keywords and 44 English keywords were included. The nodes of the network analysis diagram were closely connected and highly centralized. The Chinese and English keywords“cognitive frailty”“elderly”and“frailty”were all in the core position. The Chinese emergent words were“cognitive frailty”“heart failure”“chronic disease”and“risk prediction”. The English burst terms were“cognitive frailty”“questionnaire”“cohort study”“social isolation”and“prevention”. Conclusions:The research popularity in the field of cognitive frailty is increasing year by year, and the number of articles published in English is higher than those in Chinese. At present, the main research focus is cognitive frailty, the elderly and frailty with great differences between China and abroad.

Objective:To analyze and evaluate the impact of balance training on patients with chronic obstructive pulmonary disease (COPD).Methods:The randomized controlled trials of balance training in COPD patients in PubMed, Embase, Web of science, the Cochrane Library, CNKI, Wanfang, VIP, and Chinese Biomedical Literature Database were searched. The retrieval time was from the establishment of the database to November 20, 2022. A Meta-analysis was conducted using RevMan5.3 on balance ability, exercise ability, quality of life, and balance confidence in patients with COPD.Results:A total of 432 patients were included in 7 studies. The results of the Meta-analysis showed that compared with other training, balanced training could improve the balance ability of patients [Timed Up and Go Test: mean difference ( MD)=-2.19, 95% CI (-2.86, -1.52); P<0.001, Berg Balance Scale: MD=4.02, 95% CI (0.78, 7.27); P=0.020, the Balance Evaluation Systems Test: MD=7.83, 95% CI (0.13, 15.52); P=0.050], exercise ability [Six-Minute Walk Test: standard mean difference ( SMD)=0.21, 95% CI (0.01, 0.40); P=0.040] and quality of life [COPD Assessment Test and St. George′s Respiratory Questionnaire: SMD=-0.54, 95% CI (-1.08, -0.01); P=0.050], but balance training did not effectively enhance patients′ activity balance confidence [Activities-Specific Balance Confidence Scale: MD=9.34, 95% CI (-0.98, 19.66); P=0.080]. Conclusion:Balance training can improve the balance ability, exercise ability, and quality of life of patients with COPD, but the impact on patients′ activity balance confidence needs to be further verified.

Objective To summarize the prenatal diagnosis and genetic counseling of Turner syndrome fetuses with 46,X,i(X)(q10).Methods Two gravidas admitted to the Obstetrics and Gynecology Hospital of Dalian were enrolled in this study.One gravida,who was admitted in October 2016,was classified as high risk of Down syndrome based on prenatal serologic screening and systematic ultrasonography,which found remarkably shorter humeri and femora than fetus of the same gestations.The other was suggested to be monosomy X after non-invasive prenatal testing and admitted in November 2017.Fluorescence in situ hybridization (FISH) and karyotyping were performed for prenatal diagnosis.Peripheral blood karyotyping was also offered to the two women and their partners.Results FISH test for amniotic fluid did not find numerical abnormality in 13,18,21,and sex chromosomes in these two fetuses.Karyotype analysis showed that the two fetuses were both 46,X,i(X) (q10),while their parents were normal.Both cases were terminated after genetic counseling.Conclusions Prenatal serological screening,systematic ultrasonography and non-invasive prenatal testing may help to identify Turner syndrome fetus of 46,X,i(X) (q10).Timely and accurate prenatal diagnosis may prevent the affected fetus from being born.

Objective:To investigate the pro-apoptotic effect of berberine (Ber) on human lung adenocarcinoma PC-9 cell line, and to detect the role of c-Jun N-terminal kinase (JNK)/forkhead box protein O3 (FOXO3) signaling in this process. Methods:The PC-9 cells were randomly divided into the control group and the Ber group, which was treated with 30 and 60μM Ber. The survival rate, apoptot-ic rate, ROS generation, caspase-3 activity, and mitochondrial membrane potential of cells were detected. Western blot was per-formed to detect the expression of JNK/FOXO3 signaling and apoptosis-related proteins. A JNK-specific activation inhibitor, SP600125, was used to block the phosphorylation of FOXO3 in PC-9 cells, and then treated with Ber (30 and 60μM) for further detection after 24 h. Results:Ber treatment resulted in an obvious reduction in cell viability, promotion of cell apoptosis, downregulation of mitochondri-al membrane potential, and an increase of ROS and caspase-3 in a dose-dependent manner. Western blot analysis demonstrated that Ber treatment resulted in a significant upregulation of p-JNK, FOXO3, and Bax expression, and a downregulation of p-FOXO3 and Bcl2 levels. Moreover, the inhibition of JNK activation by SP600125 antagonized the anti-FOXO3 phosphorylation role and the pro-apoptotic role of Ber on PC-9 cells. Conclusion:Ber treatment effectively inhibits the viability of PC-9 cells and enhances apoptosis and oxidative stress injury, which may be related to the upregulation of p-JNK and FOXO3 and the downregulation of p-FOXO3.

Objective:To analyze the causes of SARS-CoV-2 nosocomial infection among healthcare workers (HCWs) and explore the effective precaution strategies in Emergency Center.Methods:The data of SARS-CoV-2 infected HCWs from January 5 to March 2, 2020 were retrospectively analyzed and compared under different conditions in Emergency Center of Zhongnan Hospital of Wuhan University.Results:Totally 13 SARS-CoV-2 infected HCWs (12 confirmed cases and 1 suspected case) were included in this study. The overall infection rate was 17.8% (13/73). The infection rates in outpatient/rescue room, isolation observation room and isolationin patient ward were 11.8% (4/34), 20.0% (3/15), 25% (6/24), respectively. The infection rate of physician was 13.0% (3/23), and the infection rate of nurse was 20.0% (10/50). All the infected HCWs had the definite exposure with confirmed or suspected COVID-19 patients. One asymptomatic cases were identified by laboratory findings of SARS-CoV-2 infection screening. There was no new confirmed SARS-CoV-2 infected HCWs after February 5, 2020. All the infected HCWs were cured.Conclusions:Under the epidemic of COVID-19, HCWs of Emergency Center have a high risk of occupational exposure and infection, especially for staffs working in COVID-19 isolation units. Scientific prevention and control management can effectively reduce the risk of SARS-CoV-2 infections and ensure the occupational safety for HCWs in Emergency Center.