3.Primary culture and hepatocelluar specific protein expression in human amniotic epithelial cells
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(03):-
Objective To optimize the method of primary culture for human amniotic epithelial cells (AECs) and detect the expression of hepatocelluar specific proteins in AECs. Methods AECs were obtained by collagenase and trypsin digestion method. 10,20,40 ng/mL epidermal growth factor (EGF) and 10 ng/mL basic fibroblast growth factor were added separately to the culture media,inverted microscope was used to observe the cell growth and proliferation,and the optimal condition for primary culture of AECs was obtained. The primary cells cultured without growth factors were served as controls. The expression of hepatocelluar specific proteins such as albumin,cytokeratin-18 (CK-18),alpha-1 antitrypsin (AAT) and alpha-1 foetoprotein (AFP) in cultured cells and histological sections were detected by immunohistochemical staining. Results The AECs available were relatively pure,with only a few mesenchymal cells. EGF of 10 ng/mL was chosen as an ingredient of culture medium as the growth and proliferation of AECs significantly accelerated with 10 ng/mL EGF. The expression of albumin,CK-18,AAT and AFP was detected in amnion tissues and AECs cultured in vitro. Conclusion Collagenase and trypsin digestion method and culture medium with 10 ng/mL EGF are favourable conditions for primary culture of AECs. Hepatocelluar specific proteins are expressed in human amnion tissues and AECs cultured in vitro,indicating that AECs have some characteristics of hepatocytes.
7.Epidemiological features of infectious disease related public health emergencies in Zhejiang Province, 2010-2018
ZHAI Yu Jia ; LIN Jun Fen ; GU Xue ; HE Fan
Journal of Preventive Medicine 2021;33(1):21-24
Objective:
To learn the epidemiological characteristics of infectious disease related public health emergencies in Zhejiang Province from 2010 to 2018 for the prevention and control.
Methods:
The surveillance data was extracted from National Public Health Emergency Management Information System. Descriptive epidemiology method was used to analyze main diseases as well as distribution characteristics of time and places.
Results:
A total of 445 events were reported, which caused 14362 cases and 34 deaths, with a attack rate of 0.69% and mortality rate of 0.24%. There were 298 events with less than 30 cases, accounting for 66.97%. The event classification was dominated by general events ( 242 events, 54.38% ) and ungraded events ( 201 events, 45.17% ). The main diseases were chickenpox ( 134 events, 30.11% ), hand foot mouth disease ( 59 events, 13.26% ) and other infectious diarrhea ( 51 events, 11.46% ). The incidence peaked from April to June ( 129 events, 28.99% ) and from November to December ( 131 events, 29.44% ). Ningbo ranked the top in the number of reported events ( 141 events, 31.69% ). Most events ( 322 events, 72.36% ) occurred in schools.
Conclusions
The infectious disease related public health emergencies in Zhejiang Province from 2010 to 2018 were mainly caused by chickenpox, hand-foot-mouth disease and other infectious diarrhea. The two peaks of the emergencies occurred from April to June and from November to December. Ningbo was the main area reporting infectious diseases, and schools were the main places.
8.Effect of thyroid morphologic change and initiating treatment time on mental development in children with congenital hypothyroidism
Qun JIANG ; Lian-Shu HAN ; Jun YE ; Xue-Fan GU ;
Chinese Journal of Endocrinology and Metabolism 2000;0(06):-
Objective To explore the effect of the thyroid morphologic change,the initiating treatment time and the thyroid function(serum FT_4,TSH)on mental development in children with congenital hypothyroidism (CH).Methods After diagnosed,52 cases of CH were orally administrated with L-T_4,then their mental and physical development were monitored and thyroid morphologic changes were observed by thyroid imaging(~(99m)TcO_4) and type B ultrasonography.The Bayley test was performed at the age of 10 to 30 months and expressed as mental developmental index(MDI)and psychomotor developmental index(PDI).Analysis was conducted upon treatment timing and thyroid morphologic changes.Results The MDI in those cases with morphologic abnormalities treated within 90 days was significantly lower than that with normal morphology(91?20 vs 105?15,P
10.Association between KLB gene and susceptibility to sarcopenia among the elderly
GU Xue ; LI Fudong ; XU Le ; ZHANG Tao ; ZHAI Yujia ; HE Fan
Journal of Preventive Medicine 2023;35(10):890-894
Objective:
To examine the associations of fibroblast growth factor 19 (FGF19), its co-receptor KLB gene and its receptor FGFR4 with susceptibility to sarcopenia, so as to provide insights into elucidation of sarcopenia pathogenesis and formulation of precision interventions for sarcopenia.
Methods:
A case-control study was conducted. Patients with sarcopenia at ages of 60 years and older included in the Zhejiang Provincial Elderly Health Surveillance Cohorts were selected as the sarcopenia group, and normal residents at ages of 60 years and older were served as controls. Subjects' demographics were collected using questionnaire surveys, and the height, body weight, appendicular skeletal muscle mass and grip strength were measured. Genomic DNA was extracted from blood samples for multiplex PCR targeted capture. The associations between the KLB gene single-nucleotide polymorphisms (SNPs) and susceptibility to sarcopenia were evaluated using multivariable logistic regression models.
Results:
There were 200 cases in the sarcopenia group, including 91 men and 109 women, and 180 cases in the control group, including 70 men and 110 women. All SNPs satisfied the Hardy-Weinberg equilibrium, and the minor allele frequencies were all > 0.05. There were no significant differences in the distribution of SNPs between the sarcopenia and control groups (all P>0.05). Multivariable logistic regression analysis showed that the SNP rs2687968 locus in the KLB gene was significantly associated with the susceptibility to sarcopenia among the elderly men (superdominant model), and individuals carrying the AC allele had a 2.332-fold higher risk of sarcopenia than those carrying the AA/CC allele (95%CI: 1.882-3.313).
Conclusions
KLB gene may correlate with the susceptibility to sarcopenia among the elderly men.