Objective To screen single nucleotide polymorphism(SNP)of DNA methyltransferase 1 gene in patients with systemic lupus erythematosus(SLE).and to investigate the significance of abnormal expression of DNA methyltransferase in the pathogenesis of SLE.Methods Peripheral blood mononuclear cells(PBMCs)were obtained from 11 patients with SLE and 12 normal human controls.DNA was extracted from the PBMCs.and PCR was performed to amplify some exons(1 to 7)and corresponding introns followed by direct sequencing.Results There was a 21397T/C SNP in the intron 7 between exon 7 and exon 8 of DNA methyltransferase 1 gene in patients with SLE.The frequency of CC homozygote increased in patients with SLE compared with that in normal controls(5/11 vs 1/12,X~2=4.10,P＜0.05).Conclusions There is a 21397T/C SNP in DNA methyltransferase 1 gene in patients with SLE.which may be a component of genetic background underlying the abnormal expression Of DNA methyltransferase 1.

Objective To investigate the expression of lymphocyte function-associated antigen-1 (LFA-1)on peripheral blood mononuclear cells(PBMCs)from patients with SLE and its relation to the occurrence and development of SLE.Methods PBMCS were obtained from 30 patients with SLE and 24 normal human controls.Atier labeled with anti-CD3-FITC and anti-CD11 a-PE,PBMCS were detected for the expression of CD11a by flow cytometric analysis.Results The positivity rate of CD11a was significantly higher in patients with SLE and those with active SLE than in the normal controls (73.74%±7.89%and 77.11%±7.46%vs 68.21%±4.58%.both P＜0.05).Furthermore,increased positivity rate of CD11a was observed in patients with active SLE compared with those with stable SLE (77.11%±7.46%vs 69.33%±6.27%,P＜0.05).but there was no significant difieFence between the latter group and normal controls(P＞0.05).In addition.the expression level of CD11a was positively correlated with SLE disease activity index (r=0.64,P＜0.0 1)in patients.Conclusion The overexpression of LFA-1 may take part in the occurrence of SLE and correlate with the activity of SLE.

【Objective】 To investigate the HIV infection among voluntary blood donors in Jinhua area through the analysis of HIV antibody detection and confirmation results, so as to guarantee the safety of clinical blood use. 【Methods】 419 823 samples of voluntary blood donors in Jinhua Central Blood Station from 2013 to 2020 were detedcted for HIV twice. Samples reactive with one assay were double-well retested. Samples initially reactive with two assays or positive with one retest assay were subjected to the CDC for confirmatory test. The HIV antibody infection and epidemiological characteristics of voluntary blood donors were retrospectively analyzed. 【Results】 A total of 419 823 samples of blood donors were dectected, among which 335 were reactive for HIV screening, 48 confirmed positive, with the positive rate at 0.11‰(48/419 823), of which 31 were registered residence in Jinhua and 17 in other places; 46 males and 2 females; 35~45 years old accounted for 28.23%; freelancers 43.61%; coinfection 4.16%.The positive rates differed significantly by gender (male 0.18 ‰ vs female 0.01 ‰, P<0.05 ), age groups (‰) (0.17 vs 0.07 vs 0.18 vs 0.01 vs 0.20 in 18~24, 25~34, 35~44, 45~54, 55~59 years old group, P<0.05), but not by registered residence( 0.10‰ of Jinhua area vs 0.14‰ of other areas) or occupation (‰)( 0.09 vs 0.24 vs 0.11 vs 0.03 vs 0.09 vs 0.11, and 0.13 for students, workers, farmers, civil servants, medical personnel, employees and freelancers, P>0.05). 【Conclusion】 The positive rate of HIV antibody in Jinhua area was lower than that in other areas. Blood stations should continue to carry out ELISA and NAT, strengthen the publicity and education of AIDS prevention and control, and ensure the safety and effectiveness of clinical blood use.

ObjectivesTo compare operative characteristics, postoperative residue, recurrence, and pregnancy outcome between laparoscopic myomectomy (LM) and transabdominal myomectomy (TAM),and investigate the favourable surgical approach in women with uterine myomas. MethodsFrom Jan 2008 to Dec 2008, 313 women undergoing LM and 148 women undergoing TAM were studied retrospectively in Peking Union Medical College Hospital. The patients' general information, including the largest diameter,mean numbers and weights of excised myomas, peri-operative characteristics (operating time, blood loss,and hemoglobin decrease), and residue, recurrence of myoma, and pregnancy outcome were compared and analyzed. Results The largest diameter, mean numbers and mean weight of myomas removed were larger in TAM group [( 7.6 ± 3.0) cm, (5.6 ± 5.5 ), ( 308 ± 364) g, respectively]than those in LM group [(6.8±2.0) cm, (2.4 ±2.1), (140 ± 109) g, respectively; P＜0.01]. While the extension of operating time [(89±32) versus (74 ±35) min], increased blood loss [(239 ±251 ) versus ( 149 ±252) ml]and hemoglobin decrease [(22 ± 14) versus ( 15 ± 12) g/L], and longer hospital stay [(6. 4 ± 1. 6)versus (4. 4 ± 1.3) d]were observed in TAM group when compared with those in LM group ( P ＜0. 01 ).However, the residue rate of LM and TAM was 2. 6％ versus 1.4％ respectively ( P = 0. 5130 ) ; the recurrence rate of LM and TAM was 11.1％ versus 12. 3％ (P ＞ 0. 05 ) ; the pregnancy rate of LM and TAM was 49. 2％ versus 9/13 separately, the difference was not statistically significant ( P = 0. 2330 ). The number of myomas removed was the significant risk factors associated with recurrence ( OR = 2. 805, 95％CI: 1. 192 -6. 601, P = 0. 0180). No uterine rapture occurred during pregnancy. ConclusionsBoth LM and TAM are effective surgical approaches for the patients with leiomyoma who desire to pregnancy, or to retain the integrity of their uteruses. Most of uterine myoma could be treated through laparoscopy. The residue rate of LM is higher than that of TAM. However, the short term recurrence rates of LM and TAM are similar. Multiple myomas is the risk factor associated with recurrence after myomectomy. The pregnancy rates are comparable between LM and TAM groups.

Objective To explore the mechanism underlying the induction of systemic lupus erythematosus (SLE) by estrogen, hydralazine and ultraviolet irradiation. Methods Peripheral blood mononuclear cells (PBMCs) were harvested from 10 patients with SLE and 9 normal human controls, and cultured with or without the intervention with estrogen, hydralazine or ultraviolet irradiation. The DNA methyltransferase-1 (DNMT1) activity of PBMCs was quantified by using DNMT activity/inhibition assay kit. Results No statistical difference was observed in DNMT1 activity between patients with SLE and normal controls (0.36 ± 0.24 vs 0.46 ± 0.17, P ＞ 0.05). A significant decrease was noted in DNMT1 activity in PBMCs from patients with SLE after intervention with estrogen (0.32 ± 0.18 vs 0.46 ± 0.17, t = 1.725, P ＜ 0.05), hydralazine (0.33 ±0.13 vs 0.46 ± 0.17, t = 1.739, P ＜ 0.05) and ultraviolet irradiation (0.30 ± 0.14 vs 0.46 ± 0.17, t = 1.739,P ＜ 0.05 ) compared with that from normal human controls. The treatment with hydralazine also induced an attenuation of DNMT1 activity in PBMCs from normal human controls (0.38 ± 0.12 vs 0.46 ± 0.17, P＜ 0.05).Conclusion Estrogen, hydralazine and ultraviolet irradiation can inhibit the DNMT1 activity of SLE patients,indicating that they may induce the initiation of SLE by altering the activity of DNMT1.

Objective To investigate the relationship between the distribution of nerve fibers in multiple endometriosis lesions and pelvic pain.MethodsFrom Sept.2007 to Sept.2008, 120 endometriosis patients treated in Peking Union Hospital were enrolled in this study, which including 19 cases with stage Ⅰ , 29 cases with stage Ⅱ , 44 cases with stage Ⅲ and 28 cases with stage Ⅳ.The pain symptom was evaluated by visual analogue scales(VAS) score and nerve fibers in multiple endometriosis lesions were detected by immunohistochemical staining.Results The number of nerve fibers in multiple endometriosis lesions were (29.74 ± 17.33)/mm~2 in uterosacral ligament, (24.53 ± 13.34)/mm~2 in vaginal septum, (17.09 ± 10.09)/mm~2 in uterus rectum crux, (6.77 ± 4.21)/mm~2 in peritoneal endometriosis lesions, (0.07 ± 0.25)/mm~2 in endometriosis ovarian cyst wall.The number of nerve fibers in uterosacral ligament was mostly correlated with the degree of pain (r = 0.56).The nerve fibers of uterus rectum crux and vaginalseptum were correlated with defecation pain (r = 0.58 and 0.41) and dyspareunia (r = 0.82 and 0.67),which were significantly higher than those in endometriosis leision in peritoneum and ovary.There was no significant different number of nerve fibers among different stage disease (P > 0.05).Conclusion There was significantly different distribution of nerve fibers in multiple endometriosis lesions, which was correlated with dysmenorrhea, anus pain, dyspareunia and chronic pelvic pain, not with clinical staging.

Objective To investigate the effect of hexosamine biosynthesis pathway on the development of insulin resistance induced by high fat diet.Methods Normal male SD rats were randomly divided into three groups:control(fed with normal chow),high fat(fed with high fat diet for 13 weeks),and rosiglitazone (intragastric administration with rosiglitazone for 5 weeks)groups.After 13 weeks,all the rats were sacrificed,serum and muscle triglycerides(TG),serum total cholesterol(TC),and serum and muscle free fatty acids(FFA) were measured.Insulin sensitivity wss evaluated by insulin sensitivity index(ISI)and glucose infused rat(GIR) with the hyperinsulinemic englycemic clamp technique.The flux of HBP in skeletal muscle was detected with the expression level of glutamine-fructose-6-phosphate transaminase(GFAT)mRNA(RT-PCR),the content of UDPGlcNAc(HPLC)and the level of O-GlcNAc glycosylation in skeletal muscle proteins(Western blot). Results Compared with control group,senlm TG,TC,FFA and muscle TG,FFA levels of high fat group increased(aII P<0.01).both ISI and GIR decreased(both P<0.01),and the leveIs of GFAT mRNA(0.51±0.05 vs 0.18±0.02),UDP-GlcNAc[(6.18±0.86 vs 2.42±0.36)nmol/g],and O-GIcNAc glycosylation of skeletal muscle proteins in high fat group were raised(all P<0.01).In rosiglitazone group,serum and muscle TG.FFA welc deceased(all P<0.01).insulin sensitivity was increased(P<0.05)and the flux of HBP[GFAT mRNA 0.27±0.03,UDP-GIcNAc(2.62±0.32)nmol/g]was reduced(all P<0.05)as compared with high fat group. Conclusions High fat diet-induced insulin resistance in rats is correlated with the increased flux of HBP in skeletaI muscle.which is decreased by rosiglitazone.

Objective To investigate the expression of potassium channels and the influence of estrogen and progesterone on the cultured uterine smooth muscle cells (USMC) of adenomyosis in vitro.Methods There were 22 cases of adenomyosis hysterectomy in the adenomyosis group and 12 patients with cervical intraepithelial neoplasia Ⅲ removal of the uterus in the control group.USMC were separated and cultured in vitro, incubated with different concentrations of estrogen and progesterone.We used reverse transcription-PCR to dectect the expression of large-conductance calcium-and voltage-sensitive potassium channel α subunit (BKCa α) and voltage-gated potassium channel 4.3 (Kv4.3).Results The mRNA expression of BKCa α and Kv4.3 in the adenomyosis group (4.43 ±2.05 and 4.52± 1.97) were significantly higher than those in the control group (0.83±0.25 and 0.86±0.19, P＜0.05).In the control group, Kv4.3 mRNA decreased after treated with 0.1 nmol/L (0.17±0.10) and 1.0 nmol/L (0.13±0.08) estrogen than before (0.55±0.29, P＜0.05).In the adenomyosis group, BKCa α mRNA decreased significantly after treated with 10.0 nmol/L estrogen (0.56±0.27 versus 1.01±0.35, P＜0.05).0.1 μmol/L progesterone elevated both BKCa α mRNA (0.44±0.24 versus 0.16±0.09) and Kv4.3 mRNA (1.29±0.51 versus 0.55±0.29) in the control group (all P＜0.05);however, there were no significant difference in adenomyosis group of different concentration of progestrone (P＞0.05).Conelusuion There is an abnormal expression of potassium channels in the adenomyosis USMC, which is regulated by high concentration of estrogen and might be resistant to progesterone.

Objective To determine the current prevalence and risk factors of metabolic syndrome (MS) among adult residents in Chinese developed areas.Methods The clinical data of 6614 adult residents,including 4051 women,from Guangdong and Jiangsu provinces from China Diabetes and Metabolic Disorders Study (2007-2008) were analyzed.Age and sex standardized prevalences of MS were calculated according to the criteria of Chinese Diabetes Society (CDS),US National Cholesterol Education Program Adult Treatment Panel Ⅲ (ATP Ⅲ),International Diabetes Federation (IDF) and Joint Interim Statement (JIS),respectively.Logistic regression analysis was performed to identify the risk factors of MS.Results Age and sex standardized prevalences of MS were 17.88％ (CDS),28.50％ (ATP Ⅲ),21.99％ (IDF) and 31.50％ (JIS),respectively.The prevalences of residents with at least one metabolic abnormality were 67.86％ (CDS) 79.56％ (ATP Ⅲ),79.62％ (IDF) and 80.74％ (JIS),respectively.MS was more common in female than in male by the ATPⅢ and IDF criterion (ATPⅢ:30.63％ vs 26.45％,P ＜0.01 ; IDF:26.04％ vs 17.91％,P ＜ 0.01),while the prevalence was higher in male by CDS criteria (15.94％ vs 19.87％,P ＜0.01).There was no significant difference in the MS prevalence between the rural and the urban residents.Kappa test showed ATP Ⅲ and JIS criteria were most homogenous (κ =0.95,P ＜ 0.01).The risk factors for MS by the logistic regression model were male,older age,lower degree of education,family history of hypertension and obesity,drinker as well as uncontrolled diet.Conclusion The prevalence of MS is high in the adult residents of Chinese developed areas (Guangdong and Jiangsu provinces),whatever diagnostic criterion was used.Effective measures should be taken to control the modifiable MS risk factors.

OBJECTIVE:To study the stability and to predicate the expiration date of betamethasone cream.METHODS:The HPLC method was used to determination the content of betamethasone,the stability test of cream was done by initial mean velocity method and strong light exposure experiment,respectively.RESULTS:The linear concentration range for betametha?sone cream was0.25～8?g/ml(r=0.9991),the average recovery rate was98.56%,RSD=0.78%;The content was highly correlated to temperature,whereas on which the light exposure did little effect.CONCLUSIONS:Betamethasone cream should be stored under room temperature and in a cool place,it is predicted that the expiration date of betamethasone cream is1year.