ObjectiveTo study the relevant effect of proinflammatory cytokines interelenkin-17(IL-17), -6 and endothelin-1 (ET-1) on statins attenuating no-reflow phenomenon after myocardial ischemia-reperfusion in rats.MethodsEighteen healthy male Wistar rats were randomly divided into 3 groups according to body weight: sham operation, injury, preconditioning groups. The preconditioning group was given atorvastatin 2 mg·kg-1 ·d-1 and the other two groups were given the same volume of saline once. After 7 days, the rats were anesthetized with an intraperitoneal injection of chloral hydrate, and then the thoracic cavity was opened. The coronary artery of injury group and preconditioning group were ligated for 60 minutes, and then opened for 15 minutes, to establish the rat acute myocardial ischemia-reperfusion model. The sham operation group was was treated with a seam through the coronary artery without ligation. Eleetrocardiogram was checked before ligation, and ligation was carried out for 15, 30, 45 minutes and then reperfusion for 15 minutes. After reperfusion for 15 minutes, the thioflavine S and Even's were injected from femoral venous, then the heart and blood were obtained(keeping left ventricular only). Hearts were flushed with saline and sliced transversely into five to seven sections. Finally, observed at 365 nm wave length the existence of non-fluorescent areas, which was no-reflow zone. The level of serum IL-17, IL-6 and ET-1 was detected by ELISA. Results The electrocardiogram confirmed that the sham operation group had no ischemic damage and the model of myocardial ischemia- reperfusion was established in preconditioning group and injury group. The noreflow phenomenon could be observed under 365 nm wave length in preconditioning group and injury group. The ligated area[LA％, (57.34 ± 11.49)％, (53.08 ± 8.66)％] of injury group and preconditioning group was higher than that of sham operation group(0, all P ＜ 0.05); the area of no-reflow[ANF％, (48.96 ± 6.94)％, (21.37 ±3.35)％] of injury group and preconditioning group was higher than that of sham operation group(0, all P ＜ 0.05),and the ANF％ of preconditioning group was lower than that of injury group(P ＜ 0.05) ; the level of serum IL-17,IL-6 and ET-1[(151.67 ± 11.19) × 10-9, (167.89 ± 5.13) × 10-9, (322.37 ± 19.08) × 10-9 g/L] of injury group was higher than those of sham group and preconditioning operation group[(49.75 ± 14.06) × 10-9, (59.32 ± 5.26) ×10-9, (109.9 ± 12.12) × 10-9, (90.45 ± 11.63) × 10-9, (112.47 ± 10.40) × 10-9 and(198.91 ± 27.88) × 10-9 g/L,P ＜ 0.05], the level of serum IL-17, IL-6 and ET-1 of preconditioning group was higher than those of sham operation group(P＜ 0.05). Conclusionsno-reflow phenomenon is related with IL-17 and ET-1 which can promote the expression of IL-6, statins decreases the expression of IL-17 and ET-1, and then decreases the on-reflow phenomenon.

OBJECTIVETo evaluate the influence of different tranexamic acid administration methods during and after cardiac surgery with cardiopulmonary bypass(CPB) on coagulation function and postoperative bleeding.

METHODSPatients undergoing elective cardiac surgery with use of CPB (n=60) were randomized in a double-blind fashion to one of two treatment groups:group A(n=30) , administered with tranexamic acid 10 mg/kg (intravenous injection slowly before skin incision) , followed by infusion of normal saline until postoperative 12 hours;and group B(n=30) , administered with tranexamic acid 10 mg/kg(intravenous injection slowly before skin incision) , followed by infusion of tranexamic acid 1 mg/(kg·h) until postoperative 12 hours. Hemoglobin, platelet count, and coagulation function were assessed before anesthesia induction, after surgery, 8am next day and 24 hours after surgery. Bleeding, allogeneic blood transfusion, and fluid infusion during the postoperative 24 hours were recorded.

RESULTNo differences were found between groups in terms of coagulant function, postoperative bleeding, allogeneic blood transfusion, and fluid infusion(P>0.05) .

CONCLUSIONCompared with intraoperative administration alone, prolonged treatment with tranexamic acid after cardiac surgery shows no advantage because it can not further improve coagulant function, reduce bleeding, or reduce allogeneic blood transfusion.

Adolescent ; Adult ; Aged ; Antifibrinolytic Agents ; administration & dosage ; therapeutic use ; Blood Coagulation ; drug effects ; Cardiac Surgical Procedures ; Cardiopulmonary Bypass ; Double-Blind Method ; Female ; Humans ; Male ; Middle Aged ; Perioperative Period ; Postoperative Hemorrhage ; prevention & control ; Postoperative Period ; Tranexamic Acid ; administration & dosage ; therapeutic use ; Young Adult

Objective To analyze the clinical and genetic characteristics of 10 Chinese patients with 17? hydroxylase/17,20 lyase deficiency (17OHD). Methods Clinical features and laboratory data were collected from 7 kindreds with 17OHD. PCR products and subclone sequencing were performed to screen the mutation of CYP17A1 gene. Results All patients had typical clinical presentation of sexual infantilism, hypertension and hypokalemia. The laboratory examinations indicated decreased plasma cortisol, 17-hydroxy progesterone, estradiol and testosterone, and elevated blood adrenocorticotrophic hormone(ACTH), follcie-stimulating hormone(FSH) and luteinizing hormone(LH). CT scan showed bilateral adrenal hyperplasia. 5 CYP17A1 mutations were identified, 4 of which are novel types D487_F489del, the most frequent mutation, was identified in 4 families and 45% alleles. Conclusion Our study indicates that 17OHD should be considered in the diagnosis of patients with sexual infantilism. D487_F489del is the most frequent mutation in Chinese 17OHD patients.

The purpose of this study was to detect the expression levels of geminin and cdt1 in peripheral blood and bone marrow from patients with newly diagnosed acute leukemia (AL), and further explore effects of them in the pathogenesis of AL. mRNA expression of geminin and cdt1 in peripheral blood and bone marrow of newly diagnosed AL patients was detected by SYBR Green real-time quantitative reverse transcription polymerase chain reaction(SYBR-RT-PCR). The results showed that mRNA expressions of both geminin and cdt1 in peripheral blood were positive in 10 out of 13 newly diagnosed ALL patients (76.92%) and in 9 out of 14 newly diagnosed AML patients (64.29%), while no positive expression of these 2 genes was detected in 10 normal controls; mRNA expression levels of geminin and cdt1 in bone marrow of newly diagnosed ALL and AML patients were 108.06 ± 67.34 and 52.37 ± 35.16, 62.66 ± 58.69 and 26.68 ± 22.29, respectively, which were higher than those in normal controls (11.81 ± 2.83 and 7.32 ± 5.77), there were significant differences (p < 0.01 and p < 0.05). mRNA expression of geminin was significantly positive related to mRNA expression of cdt1 in bone marrow of 34 newly diagnosed AL patients (r = 0.55, p < 0.01). It is concluded that mRNA expressions of geminin and cdt1 are enhanced and significantly positively related between them in bone marrow of AL patients. The over-expression of geminin and cdt1 mRNA may play an important role in pathogenesis of AL.
Acute Disease ; Adolescent ; Adult ; Aged ; Cell Cycle ; Cell Cycle Proteins ; genetics ; Female ; Geminin ; Humans ; Leukemia ; genetics ; Male ; Middle Aged ; Reverse Transcriptase Polymerase Chain Reaction ; Young Adult

Background Retinitis pigmentosa (RP) is a monogenic inheritance and blinding disease of fundus oculi.There is not an effective therapeutic method now.Objective This work was to identify the mutations of RP1 gene in Chinese RP patients in Ningxia area and to explore the potential interactions in the pathogenesis of RP.Methods The periphery blood of 3-5 ml was collected from 110 individuals with RP(35 ADRP and 75SRP)and 100 normal controls in Ningxia area.Polymerase chain reaction (PCR) and direct DNA sequencing were used to screening the sequence alterations in the entire coding region and splice sites of RP1 gene.Multivariate analysis and two web-based programs( PolyPhen and SIFT) were used to analyze the results.Results Eleven mutation locus were detected in the exon 4 of RP1 gene including two novel sequence variants:p.Lys1152Lys without a higher mutation rate in comparison with normal control group(x2 =9.12 P＜0.01 ),but c.* 247A＞C with a higher mutation rate in comparison with normal control group(x2 =12.77,P＜0.01 ) and c.* 247A＞C mutation was thought to be correlated with RP( r=1.11,P＜0.05 ).The other ten mutation locus were reported as single nucleotide polymorphisms (SNP).The mutation rate of p.Gln1725Gln was found to be higher in the RP patients than the normal controls (x2 =42.09,P＜0.01 ),but no the significant correlation was seen between the pathogenesis of RP and mutation of p.Gln1725Gln(r=1.74,P＞0.05).p.Lys1152Lys mutation was found in only 1 patient.Three SNPs( p.Arg872His,Ala1670Thr,Ser1691Pro) were always occurred in the same 83 RP patient and the relevance ratio was higher than controls ( P＜0.01 ).The age of night blindness on patients with concurrent three mutations was (30.54± 13.68 ) years,and the best corrected visual acuity (BCVA) was 0.50 ± 0.38.The age of night blindness on patients without concurrent three mutations was(21.06± 16.24) years,and the BCVA was 0.40 ±0.33 and were higher than controls ( t =2.11,P ＜ 0.05 ).Conclusions In this study,the prevalence of RP1 mutations among the RP patients in Ningxia population was lower than other populations (＜ 1％ ).The alliance of SNPs (p.Arg872His、p.Ala1670Thr、p.Ser1691Pro) may play a protective role on RP patients and reduce the frequency of mutatiaon in RP1 gene.

Objective During June 2-8, 2009, 11 cases of the novel influenza A (H1N1)occurred in Sichuan Province, China. We investigated this outbreak to identify the source of infection,mode of transmission and risk factors for infection. Methods The primary case, a U.S. citizen,developed disease on June 2. From June 3 to 5, she joined Tour Group A for a trip to Jiuzhaigou. We telephoned passengers of the three flights on which the primary case had traveled in China, and members of Tour Group A. We asked whether they had any influenza-like symptoms during May 27 to June 12. Health authorities placed passengers whose seats were within three rows of the primary case on flights and members of Tour Group A on medical observation, and isolated individuals if they developed symptoms. We used real-time RT-PCR to test the throat swabs from symptomatic persons for the novel influenza virus and defined a confirmed case as one with influenza-like symptoms and laboratory confirmation. A retrospective cohort investigation to identify the risk factors for infection was conducted. We interviewed all members of Tour Group A about their detailed contact history with the primary case. Results During June 5 to 6, 9 (30%) of the primary case' s 30 fellow tour group members developed disease, compared with none of her 87 fellow passengers to Jiuzhaigou and 1 of her 87 fellow passengers on the returning trip (when several of the members of Tour Group A were symptomatic). 56% of the tourists who had talked with the primary case in close range ( ＜2 m) for ≥2 minutes developed disease, whereas none of the 14 other tour group members developed disease (RR= ∞; exact 95%CI: 2.0- ∞ ). Having conversed with the primary case for ≥ 10 minutes (vs. 2-9 minutes) increased the risk by almost five fold (RR=4.8, exact 95%CI: 1.3-180). Conversely, other kinds of contact, such as dining at the same table, receiving chewing gum from the primary case and sharing bus rides or planes with the primary case played no roles during this outbreak. Conclusion This novel influenza A (H1N1) outbreak was caused by an imported case, and transmitted mainly via droplet transmission when the primary case was talking with her fellow tourists during a tour. These findings highlight the importance of preventing droplet transmission during a pandemic.

PURPOSE: G-protein coupled estrogen receptor 1 (GPER) probably play important roles in the progression of breast cancer including endocrine therapeutic resistance. We evaluated GPER in primary breast cancers. METHODS: Immunohistochemistry was used to detect GPER in paraffin-embedded tissues of primary breast cancers from 423 patients and GPER expression was correlated with clinicopathological factors. RESULTS: GPER was expressed in 63.8% of specimens, coexpressed with estrogen receptor alpha (ERalpha) in 36.6% of tumors and was positive in 62.5% of the ERalpha-negative tumors. The expression of GPER had no relationship with the status of ERalpha, progesterone receptor and HER2. Although the expression of GPER was significantly inversely related with nodal status (p=0.045), no correlation between GPER expression and other clinicopathological variables (age, menstruation status, tumor size, stage, histologic grade, Nottingham Prognostic Index or pathological type) was found. CONCLUSION: GPER and ERalpha exhibited independent expression pattern of distribution in primary breast cancers. A long-term follow-up and a more definite molecular phenotype for ER are necessary in confirming studies.
Breast ; Breast Neoplasms ; Estrogen Receptor alpha ; Estrogens ; Female ; Follow-Up Studies ; GTP-Binding Proteins ; Humans ; Immunohistochemistry ; Menstruation ; Phenotype ; Receptors, Progesterone

Objective To investigate the relationship between impaired glucose tolerance(IGT)and carotid atheromatous plague in patients with acute cerebral infarction and analyze the risk factors for plaque formation.Methods The 326 patients hospitalized in our department for acute cerebral infarction were divided into diabetes mellitus(DM)group,IGT group and normal glucose tolerance (NGT)group.The clinical features,biochemical indices and results of Doppler ultrasound examination of the carotid artery were compared between the 3 groups.Results The body mass index(BMI),total cholesterol(TC),and low-density lipoprotein cholesterol(LDL-C)of IGT group were markedly higher than those in NGT group(P＜0.05).Both the IGT and DM group showed significantly increased carotid intimal-medial thickness,plaque detection rate and the incidence of carotid scleratheroma in comparison with the NGT group(P＜0.05).Logistic regressive analysis identified age,TC,LDL-C and 2-h postprandial serum glucose as the independent risk factors for carotid scleratheroma.Conclusion In patients with acute cerebral infarction,those having impaired glucose often show obvious carotid scleratheroma with a severity similar to that in the DM patients.

OBJECTIVETo investigate the association of calcitonin receptor (CTR) gene polymorphism with bone mineral density (BMD) in premenopausal and postmenopausal women.

METHODSCTR genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 184 premenopausal women and 199 postmenopausal women in Shanghai area. BMD at lumbar spine (L2-4) and femoral neck (FN) were measured by dual-energy X-ray absorptiometry (DEXA).

RESULTSThe distribution of CTR genotypes in 383 Shanghai women were CC genotype 83.8%, TC genotype 14.6%, TT genotype 1.6%, respectively. BMD at FN of CC genotype was significantly higher than TC and TT genotypes (P < 0.01) in postmenopausal women. But there was no difference in BMD of different CTR genotypes in premenopausal women. Multiple regression analysis showed that CTR genotypes were associated with FN BMD in postmenopausal women (P < 0.05).

CONCLUSIONSThe polymorphism of CTR gene was associated with BMD in postmenopausal women.

Adult ; Alleles ; Bone Density ; Female ; Femur Neck ; Genotype ; Humans ; Middle Aged ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Postmenopause ; Premenopause ; Receptors, Calcitonin ; genetics

OBJECTIVETo investigate the relative contribution of fat mass and lean mass on bone mineral density (BMD) in premenopausal healthy women.

METHODSThe BMD at lumbar spine, proximal femur and total body, together with fat mass and lean mass was determined by dual-energy X-ray absorptiometry (DEXA), the body height, weight, waist, and hip circumference were also measured, and body mass index (BMI) and waist-hip ratio were calculated in 282 premenopausal women.

RESULTSFat mass was a major determinant for BMI, BMI and lean mass were positively related with L2-4, proximal femur and total body BMD (P = 0.000 for all), and lean mass were the only independent factor contributing to L2-4 (standardized coefficient beta = 0.282, P = 0.000), proximal femur (beta = 0.336, P = 0.000) and total body BMD (beta = 0.361, P = 0.000) in stepwise regression analysis. The relationship between BMI and BMD was further improved after controlling fat mass, while decreased or even lost when controlling lean mass.

CONCLUSIONSLean mass was an important factor determining BMD in premenopausal women.

Absorptiometry, Photon ; Adult ; Body Composition ; Body Mass Index ; Bone Density ; Female ; Humans ; Middle Aged ; Premenopause