Objective To investigate the changes of hair growth with the increase of age and to develop a new practical method to evaluate the extent of aging. Methods After the approval of the ethnic committee, 96 healthy volunteers (44 males, 52 females, aged 30 ~ 78 years) were recruited into the study and divided into 4 groups based on the age: 30-group, 40-group, 50-group and 60-group. Macrophotographs were taken from the vertex. Hair density and percentages of black hairs were counted using Photoshop7.0 software. Ten hairs were randomly plucked from the specified scalp area,and the diameters of hair shaft and hair bulb were examined by a micrometer. The percentages of the follicles, based on their morphology, at different phases of the hair cycle, were counted. Results With the increase of age, the hair density, diameters of hair shaft as well as hair bulb, the percentages of anagen follicles and grey hairs all decreased, while the percentages of telogen follicles and white hairs increased, and significant difference was found between the 60-group and other 3 groups. In each group, the difference between males and females was found only in some parameters. The diameter of hair bulb positively correlated with that of hair shaft. Conclusion This study suggests that the parameters of hair growth could be used to help rating the extent of aging.

Objective To determine the in vitro effects of the traditional Chinese medicines, berberine, matrine and baicalin, on the proliferation and lipid synthesis of human immortalized sebocyte SZ95, and to investigate their possible mechanisms of action on sebaceous glands at the cellular level. Methods Inverted microscopy was used to observe cell morphology and determine toxic concentrations of the compounds. The MTT method was adopted to examine the effects of different concentrations of berberine, matrine and baicalin on SZ95 cell proliferation after 24 h, 48 h and 72 h of incubation. Lipid contents in the SZ95 cells were labeled with Nile red and analyzed by flow cytometry. Results The toxic concentrations were 1?10-3 mol/L, 1?10-4 mol/L, 1?10-3 mol/L for baicalin, berberine and matrine, respectively. Berberine reduced sebocyte proliferation in a dose- and time-dependent manner, with an inhibitory concentration 50 (IC50) of 2.9?10-5 mol/L and 1.4?10-5 mol/L after 48 h and 72 h of incubation, respectively. When the concentration of matrine was 0.05). Lipogenesis of SZ95 cells showed a 26.9% increase with 1?10-3 mol/L matrine. Conclusions Our results indicate that berberine and baicalin can inhibit proliferation and lipid synthesis of SZ95 sebocytes in vitro, which suggests a possible clinical role in treating acne.

Objective To study the effects on berberine hydrochloride on the mitochondria membrane potential and free intracellular calcium of HaCaT cells, and elucidate the mechanism of action of berberine on keratinocytes. Methods Rhodamine-123 fluorescence (very sensitive to mitochondria membrane potential) and Fluo-3/AM fluorescence (suitabe to detect free intracellular calcium in single HaCaT cell) were measured by laser scanning confocal technique. Results Fluo-3/AM fluorescence intensity of HaCaT cells was persistently increased after treating with berberine at concentrations of 5 ? 10-5M, 2.5 ? 10-5M and 1.25 ? 10-5M, and significant differences were observed as compared with the PBS control. The intensity of rhodamine-123 fluorescence in HaCaT cells was decreased immediately when exposed to berberine, with significant difference from that of the PBS control. Conclusions It is suggested that berberine could increase free intracellular calcium and decrease mitochondria membrane potential of HaCaT cells, induce overload of intracellular calcium, influence energy metabolism, and then inhibit the proliferation of keratinocytes.

Objective To investigate the impact of severity of psoriasis on quality of life in patients with psoriasis vulgaris.Methods A questionnaire interview was carried out to the outpatients with psoriasis vulgaris(n=504)from Dec.2000to Sept.2001.All the patients were more than18years old.The content of questionnaire included daily life and activities,work and school performance,social activities and personal relationships,and psychologic status.Disease severity was assessed with psoriasis area and severity index(PASI).498patients were included for the final analysis.Statistical analysis was performed with SPSS software package.Results63.3%patients were restricted in their food selection.40.2%had bad sleep,59.0%could not dress short clothes in the summer.26.5%were restricted in use of public traffic and services.15.1%were rejected in haircut and cosmetic service.31.2%had decreased income along with severity of the disease.58.8%felt uncomfortable in social activities and public places.25.8%avoided handshaking with others.43.3%were reluctant in social intercourse.29.0%were not willing to take part in social activities,especially for moderate and severe cases.54.9%felt that their self-esteem was injured.26.6%thought that other peoples always avoided to meet them.64.4%felt anxiety for their disease.83.1%often worried about relapse or exacerbation of psoriasis.15.9%showed a tendency to commit suicide.Conclusions The more severe the disease is the more impact it may have on the daily life,work and school performance,social activities and personal relationship,and psychologic status in patients with psoriasis vulgaris.It is reccommended that besides the conventional treatment bio-psychic and social medical management be given to the patients especially for moderate and severe cases.

From August 2019 to December 2019, 74 patients with choledocholithiasis underwent laparoscopic lithotomy, including 68 cases with primary suture of common bile duct and 6 cases with T-tube drainage. The operation time, postoperative length of hospital stay, hospitalization cost and complications of the two groups were compared. The operation time and length of postoperative hospital stay in primary suture were shorter than those in T-tube drainage group[ (88.1±29.9) min vs. (144.2±30.7) min; (3.9±1.5) d vs. (7.2±3.8) d, both P<0.05]; the hospitalization cost was lower[ (29 578±1 072) Yuan vs. (37 468±2 844) Yuan, P<0.05]. There was no significant difference in the incidence of postoperative complications between two groups ( P>0.05). The primary suture seems to be superior to T-tube drainage in laparoscopic lithotomy, however, two methods have different indications and should be selected according to the individual conditions of patients.

Objective To investigate the strategies in dealing with intraoperative CO2 embolizm during Laparoscopic hepatectomy (LH).Methods We collected and analyzed data from patients who underwent laparoscopic hepatectomy (LH) in our hospital from Jan.2013 to Aug.2017.There were 321 patients.The criteria for the diagnosis of CO2 embolism were rapid intraoperative decrease in petCO2 and SPO2 accompanied with tachyarrhythmia.Results 12 patients were diagnosed to have CO2 embolism.The rate was 3.7％.For these 12 patients,10 patients were dealt with laparoscopically and 2 patients were converted to open surgery.Conclusion CO2 embolism did not rarely occur in LH patients.Sophisticated operations and careful manipulation in LH are the only ways to prevent CO2 embolism.

Tea green leafhopper(TGL),Empoasca onukii,is of biological and economic interest.Despite numerous studies,the mechanisms underlying its adaptation and evolution remain enig-matic.Here,we use previously untapped genome and population genetics approaches to examine how the pest adapted to different environmental variables and thus has expanded geographically.We complete a chromosome-level assembly and annotation of the E.onukii genome,showing nota-ble expansions of gene families associated with adaptation to chemoreception and detoxification.Genomic signals indicating balancing selection highlight metabolic pathways involved in adaptation to a wide range of tea varieties grown across ecologically diverse regions.Patterns of genetic vari-ations among 54 E.onukii samples unveil the population structure and evolutionary history across different tea-growing regions in China.Our results demonstrate that the genomic changes in key pathways,including those linked to metabolism,circadian rhythms,and immune system functions,may underlie the successful spread and adaptation of E.onukii.This work highlights the genetic and molecular basis underlying the evolutionary success of a species with broad economic impacts,and provides insights into insect adaptation to host plants,which will ultimately facilitate more sustain-able pest management.