4 female Wistar rats,weighing 287.5?21.7 gms,about 7～7.5 months old,were used.Using ~3H-TdR and ~(14)C-TdR as labels, double labelling method was employed. The dose of ~3H-TdR used was 1 ?Ci/gm body weight and that of ~(14)C-TdR used was 0.125 ?Ci/gm body weight. Bone marrow smears of both femurs were made and autoradiographs were coated with No. 4 liquid nuclear emulsion.The following results were obtained:In erythropoietic series: Nc/N_H=5.0?1.0, LI=62.3?17.9％, MI=3.4?1.9％. According to the above figures, by calculation, we obtained the cell cycle time and the duration of 4 phases as follows: TG_1≤4.3 hrs,Ts=5.0 hrs, TG_2≥1.0 hr, Tm=0.4 hr and Tc=10.7 hrs.In neutrophilic granulopoietic series: Nc/N_H=3.9?0.9, LI=45.3?5.3％, MI=3.3?1.4％. According to the above figures, the following parameters of the cycle. were obtained as follows: TG_1≤5.6 hrs, Ts=3.9 hrs, TG_2≥1.0 hr, Tm=0.4 hr and Tc=10.9 hrs.There was no obvious difference of Tc between the erythropoietic series, and theneutrophilic granulopoietic series in rats, but significant difference of Tc between them in mice.

By using double labelling methods with ~3H-TdR and ~(14)C-TdR, autoradiographs were prepared in young (40 days old) and in old (16 months old) male LACA mice and in adult (7～7.5 months old) female Wistar rats to observe the cell cycle time and relevant parameters of dorsal skin and both testes.The following results were obtained:1. In young and old mice, duration of cell cycle (Tc) and relevant parameters of epidermis were as follows respectively: labeling index (LI)=1.0 and 1.5％; mitotic index (MI)=0.4 and 0.4%; duration of DNA synthesis (Ts)=3.5 and 4.2 hours; Tc=20.3 and 17.5 days.In adult female rats, they were 3.0%, 0.3%, 4.7 hours and 8.3 days respectively. Tc of rat epidermis was obviously shorter than that of mouse epidermis (P0.50).

AIM: To compare the difference in serum prolactin levels and the concentrations of anti-infective factors of human colostrums between normal labor and cesarean section. METHODS: The serum prolactin levels were measured at 48 h, 96 h after parturition in 100 cases of normal labor and cesarean using radioimmunoassay. Furthermore, the levels of SIgA, IgG, IgM, C 3, C 4 were tested in 100 cases at the same time using the technique of immuno-turbidimetry. RESULTS: The serum prolactin levels in normal labor tested at 48 h after parturition were significantly different with that of the cesarean section group. But there was no significant difference in serum prolatin levels 96 h after parturition between the two groups. The levels of SIgA,IgG,IgM,C 3 and C 4 of the colostrum in the cesarean group were higher significantly than those of the normal group at 48 h after parturition. ( P

Medical genetics is the mutual penetrative and combined discipline of genetics and medicine.Medical genetics teaching should be improved to adapt to the discipline development.Teaching reform and practice of medical genetics was developed in basic medical college of Nanjing university of traditional Chinese medicine.Constructive exploration was made in teaching content,teaching techniques,teaching methods,scientific research and performance appraisal standards in order to improve the quality of medical genetics teaching and to train high-quality medical talents.

AIM: To compare the difference in serum prolactin levels and the concentrations of anti-infective factors of human colostrums between normal labor and cesarean section. METHODS: The serum prolactin levels were measured at 48 h, 96 h after parturition in 100 cases of normal labor and cesarean using radioimmunoassay. Furthermore, the levels of SIgA, IgG, IgM, C3, C4 were tested in 100 cases at the same time using the technique of immuno-turbidimetry. RESULTS: The serum prolactin levels in normal labor tested at 48 h after parturition were significantly different with that of the cesarean section group. But there was no significant difference in serum prolatin levels 96 h after parturition between the two groups. The levels of SIgA,IgG,IgM,C3 and C4 of the colostrum in the cesarean group were higher significantly than those of the normal group at 48 h after parturition. (P＜0.05 or P＜0.01). At 96 h after parturition, there was no significant difference in SIgA, IgG, IgM and C3 between the two groups except C4. CONCLUSION: At 48 h after paturition, the serum prolactin levels of normal labor group are higher than that of the cesarean section group. The concentrations of anti-infective factors (SIgA, IgG, IgM, C3 and C4) of human colostrums at 48 h after paturition in cesarean section group are higher than those of normal labor group.

Aim To study effects of loganin and morro-niside on aging astrocytes induced by D-galactose. Methods Cortex astrocytes of newly born rats were cultured in vivo and indentified by immunofluorescence method.Firstly,appropriate D-galactose concentration was selected and effects of loganin and morroniside on proliferation activity of aging astrocytes induced by D-galactose were determined by MTT test.Then SOD, MDA were taken as indicators to study the effects of loganin and morroniside on aging astrocytes induced by D-galactose.Thirdly,growth factors like gliar cell line-derived neurotrophic factor (GDNF),basic fibro-blast growth factor (bFGF)tested by ELISA method and expression of Bax,caspase-3,phospho-extracellu-lar signal-regulated kinese (p-ERK1 /2),phospho-mi-togen-actived protein kinase /extracellular signal-regu-lated kinase kinase (p-MEK1 /2)were taken as indi-cators to discuss the potential protection mechanism. Results Loganin and morroniside exerted certain effects on proliferation of aging astrocytes induced by D-galactose,improving SOD,GDNF,bFGF release and lowering MDA release significantly (P <0.05 ). The expressions of Bax and caspase-3 proteins had no difference between model group and loganin group, morroniside group.While the expressions of p-ERK1 /2,p-MEK1 /2 of loganin group,morroniside group were improved significantly compared with model group.Conclusion Loganin and morroniside have protective effects on aging astrocytes induced by D-ga-lactose,and increase the proliferation ability.Protec-ting their antioxidant systems and improving the expres-sion of p-ERK1 /2,p-MEK1 /2 proteins are possible mechanisms.

Objective To explore the mental health and personality traits of the parents of cerebral palsy children. Methods 128 parents of cerebral palsy children and other 128 parents of healthy children were investigated with the Symptom Check List-90 (SCL-90), Eysenck Personality Questionnaire (EPQ). Results The scores of SCL-90 were more in the parents of cerebral palsy children, especially in the factors of somatization, obsession, depression, anxiety, and paranoid (P<0.01). The personality traits characterized as introversion (P<0.05) and neuroticism (P<0.01). The multiple regression showed that some factors of SCL-90 were related with the personality of neuroticism. Conclusion The mental health of the parents of children with cerebral palsy are poor, which may be related with the personality of neuroticism.

objective To understand the status of Oncomelania hupensis snail distribution and diffusion in main drainages of Hexi Reservoir and evaluate the snail control effect of the schistosomiasis control engineering of Hexi Reservoir. Methods The O. hupensis snails were investigated by using the straw curtain method and fishing net method in different areas of the main drainages of Hexi Reservoir and the results were analyzed. Results A total of 1 800 straw curtains were used and 37 snails were found in Naxi stream. Totally 5 870 kg floats were salved and no snails were found. Conclusion The schistosomiasis con?trol engineering of Hexi Reservoir is effective in the prevention of the snail diffusion but there are still snails in the upstream. Therefore the snail surveillance and control need to be strengthened.

Objective To understand the changes of schistosomiasis epidemic situation,so as to provide the evidence for for?mulating schistosomiasis control strategy in the Hexi reservoir area. Methods From 2012 to 2015,Xinyuan Village,Meishan Town in the north entrance of Hexi reservoir was selected as a monitoring site. According to the requirements of the monitoring program of schistosomiasis surveillance in Zhejiang Province,the Schistosoma japonicum infection was investigated by using the serological screening(IHA),and the basic situation of the surveillance site was also investigated. Results From 2012 to 2015,167 environments(21.68 hm2)were surveyed,and 2 slices(0.1 hm2)were found with Oncomelania hupensis snails. The detection rate of frames with snails was 0.12%,and the living snail density was 0.0192 snails per 0.1 m2. Totally 374 snails were dissected and no schistosome infected snails were found. A total of 970 local residents and 8 748 mobile people were investigated with the serological tests,and no schistosome infected people were found. In addition,3 085 cattle were investigated and no in?fected ones were found. Conclusion The schistosomiasis epidemic situation is stable in the Hexi reservoir area,but we still should strengthen the monitoring of imported source of infection and snail status,and increase the efforts of environmental trans?formation.

Aim To examine the inhibitory effect of re-combinant cardiac troponin fusion protein composed of subunit I and artificial peptide which was called CIS on tumor growth. Methods The CIS ’ s effect on the growth of human umbilical vein endothelial cells ( HU-VEC) was examined using MTT assay in vitro. Chick chorioallantoic membrane model was applied to study the alteration of angiogenesis treated with purified re-combinant CIS protein. The effect of tumor growth trea-ted with CIS was observed using several in vivo mice xenograft models. Results There was a statistically significant reduction in HUVEC cell proliferative rate when the cells were treated with purified CIS fusion protein, which was also shown in a dose-dependent manner. A decreased amount of new blood vessel for-mation ( angiogenesis) on chick embryo chorioallantoic membranes was observed in recombinant CIS protein treated group compared to the untreated control group. A significant inhibition of tumor growth rate was a-chieved in CIS treated mice compared to CIS untreated control mice in 6 different mouse xenograft models. Conclusions The fusion protein CIS shows the inhibi-tory effect on the tumor growth in our in vivo mouse models, and such inhibition could be mediated by the mechanism of CIS’ s effect on the decrease of HUVEC cell proliferation and further the reduction of angiogen-esis in tumor tissues. This work could provide the foundation for the in-depth investigations on the phar-maceutical application of CIS targeting anti-tumor ther-apy.