Body fat of 12 male adults were measured by water displacement me-thod(density method) at every morning for 5 successive days. The standard deviation of single observation was 0.29kg calculated by mean residual lung volume method. It was significantly lower than the value (0.5kg) calculated by the ordinary method (p

Biopsy ; Brain ; pathology ; Frozen Sections ; methods ; Humans

Objective To analyze the relationship between pre － pregnancy body mass index ( BMI) ，gestational weight gain ( GWG) and the birth weight of infants，and explore the effect of weight change before and during pregnancy on low birth weight ( LBW) and macrosomia． Methods Women were enrolled by the Chinese Pregnant Women Cohort Study during first trimester． Each respondent＇s weight before and during pregnancy and the birth weight of infant were collected after fellow up． Prepregnancy BMI was divided into underweight，normal and overweight /obesity groups and GWG was divided into suitable， insufficient and excessive groups． Multivariate Logistic regression was adopted to explore the relationship be- tween pre－pregnancy BMI，GWG and newborn＇s birth weight． Ｒesults Women＇s prepregnancy BMI and GWG were associated with neonatal birth weight ( all P＜0. 05) ． Prepregnancy overweight or obesity ( OＲ=2. 339，95% CI: 1. 674－2. 282，P＜0. 001) and excessive GWG ( OＲ= 1. 398，95% CI: 1. 188－1. 978，P= 0. 048) were shown as risk factors for macrosomia． Insufficient GWG increased LBW risk ( OＲ = 1. 479， 95% CI: 1. 461－1. 679，P= 0. 035) while excessive GWG declined LBW risk ( OＲ= 0. 428，95% CI: 0. 225 －0. 817，P= 0. 010) ． Under weight－insufficient GWG was risk factor of LBW ( OＲ= 1. 335，95% CI: 1. 048 －2. 319，P= 0. 048) while normal BMI－excessive GWG ( OＲ= 1. 088，95% CI: 1. 016－1. 675，P= 0. 038) and overweight /obesity－excessive GWG ( OＲ= 1. 498，95% CI: 1. 244－2. 017，P= 0. 046) were associated with higher risk of delivering macrosomia． Conclusions Prepregnancy BMI and GWG were associated with infant＇s birth weight and women were suggested to maintain their weight in recommended range before and during pregnancy．

Objective To find out severity and types of syphilis infection in blood donors, attendants and persons to have their premrital medical examination in Zhoushan City and offer a new measure for prevention and treatment of syphilis. Methods Totally, 174 589 blood donors, attendants and persons to have their premarital medical examinations were screened preliminarily for inapparent syphilis with non-TPHA, and then TPHA was applied to confirm the diagnosis, according to the National Standard No. GB 15974-1995, combining with clinical symptoms and physical check-up. Results A total of 1 327 cases of syphilis from 174 589 samples tested, including blood donors, attendants and persons to have their premarital medical examinations, were diagnosed, with an inapparent infection rate of 7. 60‰ in average, 6. 42‰in males and 8. 74‰ in females, with a sex ratio of 0.71 (X2 = 29. 92, P

Objective:To find the relationship between insulin-resistance and Syndrome Differentiation type (SDT) in hypertensive patients.Methods: Two hundred and nine patients of early stage hypertention with no complications of heart, brain or kidney were selected and classified into 4 types according to SDT, the Liver-Fire exuberant type (A), the Phlegm-Dampness abundant type (B), the Yin-Deficiency and Yang-Excess type (C) and the Deficiency of both Yin and Yang type (D). Their insulin sensitivity was examined and compared with that of 40 healthy subjects.Results:(1) Compared with the healthy subjects, all hypertensive patients had apparent insulin resistance (P<0.05).If the insulin sensitivity of healthy subjects was defined as 1.00, that of patients of type A, B, C and D were 0.54, 0.58, 0.65 and 0.80 respectively. (2) The insulin sensitivity of patients in the 4 SDT groups were compared and no significant difference was found in comparison between group A, B and C, while significant difference was found when the other three groups were compared with group D (P<0.05), the insulin sensitivity of type D was close to that of the healthy subjects. (3) The fasting blood insulin of type D was obviously lower and the insulin sensitivity of type D was obviously higher than that of the other three types as a whole (P=0.0001). (4) Multivariate regression analysis demonstrated that insulin sensitivity was closely correlated with SDT (P=0.0001). Conclusion: Insulin resistance is one of the pathological basis for SDT in hypertension.

Objective To analyze the incidence of gestational diabetes mellitus (GDM) among Chinese pregnant women and the distributions of unhealthy lifestyles. Exploring the association between these behaviors and GDM to provide some suggestions to GDM prevention. Methods Women who were enrolled by the Chinese Pregnant Women Cohort Study and delivered before the 31st December, 2018 were enrolled by this study. The characters of physical activity, sedentary lifestyle, tobacco exposure, alcohol consumption, unhealthy diet and low sleep level were assessed by questionnaire and also the pregnancy complications. Binary Logistic regression model was adopted to analyzed the relationship between the dependent and independent variables. Results A total of 3 162 women were enrolled in this study and 372 of them were diagnosed GDM. Single variable analysis showed that lack of leisure time physical activity (RR=1.015,95% CI=1.005-1.279，P=0.046) and low sleep quality (RR=1.019, 95% CI: 1.004-1.196，P=0.047) were two risk factors of GDM. Compared with women who showed none of these unhealthy lifestyle, those who showed all six unhealthy behaviors had higher risk of GDM (RR=1.530, 95% CI: 1.263-8.880，P=0.036). Conclusions The incidence of GDM among Chinese women was 11.76%. Lack of physical activity and poor sleep quality could increase the risk of GDM and the cluster of unhealthy lifestyles is associated with higher GDM risk. Adequate physical activity, no smoking and drinking, balanced diet and other healthy behaviors are important to GDM prevention.

Objective To explore the associations between cesarean section with different types and intensity of physical activity in the second trimester pregnant women． Methods Six hundred and seventy－two participants from the Chinese pregnant women cohort study ( CPWCS) were analyzed． The pregnancy physical activity questionnaire ( PPAQ) was used to collect the status of physical activities in pregnant women． The participants were followed up and the data of delivery way was collected． Logistic regression model was conducted to analyze the associations． Ｒesults A total of 273 pregnant women ( 40. 63%) were delivered by cesarean section． After adjusting age，pre-pregnancy BMI and history of childbirth，results of Logistic regression model showed that pregnant women with higher levels of exercise had a lower risk of cesarean section than those who did not participate in exercise ( OＲ= 0. 564，95% CI: 0. 338－0. 941) . In terms of physical activity intensity，pregnant women who participated in the higher level of moderate to vigorous physical activity had a lower risk of cesarean section than those who partici- pated in the lower level ( OＲ= 0．642，95% CI: 0．437－0．972) ． Conclusions Exercise and moderate to vigorous physical activity are protective factors for cesarean section． Health education should be further strengthened to encourage pregnant women to carry out appropriate physical activity during pregnancy．

OBJECTIVETo explore the mechanism of laparoscopic adjustable gastric banding (LAGB) in the treatment of obese patients with type 2 diabetes mellitus (T2DM).

METHODSA total of 20 patients with obesity and T2DM were treated with LAGB. During the postoperative 1, 3, 6, 9, 12 months, the body weight changes were monitored and body mass indices (BMI) were calculated. The serum levels of leptin, GLP-1, and ghrelin were examined preoperatively and 1, 3, 6, 9, 12 months after LAGB using enzyme-linked-immunosorbent assay (ELISA). At the same time, the fasting serum insulin (FINS), C-peptide, glycated hemoglobin (HbA1c) levels were examined by electrochemiluminescence and the level of fasting blood glucose (FBG) was tested with oxidase test.

RESULTSAt postoperatively 12 months, all the 20 patients lost weight. The mean body weight decreased from (108 + or - 18) kg to (71 + or - 16) kg (P<0.05) and BMI decreased from 38 + or - 5 to 29 + or - 6 (P<0.05). The HOMA-IR decreased from (12.8 + or - 7.4) to (3.4 + or - 2.0) (P<0.01). The serum ghrelin level increased from (7.8 + or - 1.9) microg/L to (11.6 + or - 2.6) microg/L (P<0.01). The serum leptin level declined from (24.9 + or - 13.7) microg/L to(12.9 + or - 5.1) microg/L (P<0.01). The serum GLP-1 level increased from (0.58 + or - 0.12) microg/L to(0.80 + or - 0.06) microg/L (P<0.01). After LAGB, there were positive correlations between serum leptin level and FBG, FINS, HbA1c,and C-peptide level. Serum ghrelin and GLP-1 were negatively correlated with FBG, FINS, HbA1c,C-peptide.

CONCLUSIONSLAGB is effective in treatment of obesity patients with T2DM. The mechanism may be associated with the increase of serum GLP-1 and ghrelin and the decrease of serum leptin and insulin resistance.

Adult ; Blood Glucose ; Body Mass Index ; Diabetes Mellitus, Type 2 ; complications ; surgery ; Female ; Gastroplasty ; methods ; Ghrelin ; metabolism ; Glucagon-Like Peptide 1 ; metabolism ; Glycated Hemoglobin A ; metabolism ; Humans ; Laparoscopy ; Leptin ; metabolism ; Male ; Middle Aged ; Obesity ; complications ; surgery ; Young Adult

OBJECTIVETo investigate the potential of yolk sac mesenchymal stem cells in osteogenic differentiation.

METHODSMurine yolk sacs were harvested on day 8.5 postcoitus, yolk sac cells were obtained after the yolk sacs were digested by 0.1% type I collagenase for 1 hour, the non-adherent cells were removed after being cultured for 1 hour. The adherent cells were cultured in DMEM containing of 5 ng/ml bFGF and 15% FBS, and passaged when they became subconfluent. The morphologic characteristics, and AKP, BMP-2, as well as type I, III collagen of the yolk sac adherent cells were observed and tested. The attached cells were treated with 10(-8) mol/L dexamethasone, 10 mmol/L beta-glycerophosphate, and 50 micrograms/ml vitamin C at passage 4. Alternations of morphological characteristic, AKP activity, collagen of type I, III and mineralization were detected.

RESULTSPure mesenchymal stem cells which were of spindle shape, uniform in size, positive in type I, III collagen staining and weak positive in AKP activity could be induced to pleomorphism osteoblast-like cells in vitro. The cells were transformed from spindle shape to polygonal cells which were positive in type I collagen, negative in type III collagen, strong positive in BMP-2, and positive in Von Kossa's stain at week 8. The polygonal cells could form nodular structure and their AKP activity was increased. All these were coincidence with the characters of osteoblast.

CONCLUSIONYolk sac mesenchymal stem cell can be purified and induced to osteoblast in vitro.

Alkaline Phosphatase ; biosynthesis ; Animals ; Bone Morphogenetic Proteins ; biosynthesis ; Cell Differentiation ; Cells, Cultured ; Female ; Mesoderm ; cytology ; Mice ; Osteoblasts ; cytology ; Osteogenesis ; Stem Cells ; cytology ; Yolk Sac ; cytology

OBJECTIVETo explore the possibility of repairing periodontal defects with carbonated calcium phosphate bone cement (CCPBC) modified with synthesized peptides.

METHODSPeriodontal bone defects in 4 dogs were surgically created and then restored directly with hydroxyapatite (HA), Perioglass, CCPBC and CCPBC modified with peptides. The results were compared at different levels.

RESULTSBone replacement materials were lost in HA and Perioglass groups. In the HA group defects were restored with connective tissue. Perioglass group had only a little new bone around materials by alveolar bone. CCPBC could firmly stay in bone defects to maintain the space of bone defects even without membrane use. CCPBC modified with peptides was superior to HA, Perioglass, and CCPBC, surrounded by a great deal of new bone.

CONCLUSIONUnder limitation of this study, CCPBC modified with peptides has some osteoinuctive activity and may have good prospect for the clinical application in periodontal defect repair.

Alveolar Bone Loss ; therapy ; Animals ; Bone Cements ; Bone Regeneration ; Bone Substitutes ; Calcium Phosphates ; Dogs ; Durapatite ; Male