Objective To investigate the relationship between activity of plasma platelet-activating factor acetylhydrolase (PAF-AH)and insulin resistance (IR) in patients with polycystic ovary syndrome (PCOS). Methods From Oct. 2006 to Jan. 2008, 105 PCOS patients undergoing treatment in Department of Obstetrics and Gynecology of Second Hospital affiliated to West China University were enrolled in the study, among 53 cases with homeostatic model assessment IR (HOMA-IR) exceed or equal 2.77 as IR-PCOS group and 52 cases with HOMA-IR less than 2.77 as non IR-PCOS group. In the mean time, 53 infertile women due to fallopian tube or husband factors were chosen as control group. Plasma PAF-AH activity, high-density lipoprotein-associated PAF-AH (H-PAF-AH) activity, low-density lipoprotein-associated PAF-AH (L-PAF-AH) activity, the ratio of L-PAF-AH to H-PAF-AH activity were measured and compared among three groups. The method of Pearson correlation analysis and stepwise multiple regression analysis were used to study the relationship between the ratio of L-PAF-AH to H-PAF-AH activities and hormonal and metabolic parameters. Results (1) Plasma PAF-AH activity [ (0.055±0.012) mmol· L~(-1)·min~(-1)], L-PAF-AH activity [(0.052±0.012) mmol·L~(-1)·min~(-1)], and the ratio of L-PAF-AH to H-PAF-AH activity (23±6) in the IR-PCOS group were significantly higher than those at control group [(0.050±0.009) mmol·L~(-1) ·min~(-1), (0.047±0.009) mmol·L~(-1)·min~(-1) and (18±4)] and non-IR-PCOS group [(0.050±0.0012) mmol·L~(-1) ·min~(-1), (0.048±0.012) mmol·L~(-1)·min~(-1) and (18± 5 ), P <0.05 ]. The ratio of L-PAF-AH to H-PAF-AH activities at IR-PCOS group was also significantly higher than those at Non IR-PCOS and control group after correction for body mass index (P<0.01). (2) Pearson correlation analysis showed that the ratio of L-PAF-AH to H-PAF-AH in PCOS patients was positively correlated with atherogenic index, age, body mass index, waist-to-hip ratio, HOMA-IR, triglyceride levels, fasting insulin levels, fasting glucose levels, low density lipoprotein cholesterol and total cholesterol (r=0.644, 0.247, 0.296, 0.212, 0.356, 0.587, 0.377, 0.375, 0.292 and 0.199, respectively, P<0.05), and negatively correlated with high density lipoprotein cholesterol (r=-0.510, P<0.05). The multiple stepwise regression analysis showed that atherogenic index and triglyceride were significant variables for the ratio of L-PAF-AH to H-PAF-AH activity (standardized coefficient, β=0.515 and 0.201, respectively, P<0.05). Conclusion The elvated L-PAF-AH activity may be associated with IR in PCOS patients, and the increased ratio of L-PAF-AH to H-PAF-AH activities may be a potential marker of inflammation in the patients.

Objective To study the anti-proliferation and apoptosis induction effect of cisplatin combined with Astragalus on human laryngeal cancer Hep-2 cells.Methods The proliferation inhibition of cisplatin and Astragalus alone or in combination on Laryngeal cancer Hep-2cells was measured by MTT assay.Effects of cisplatin and Astragalus alone or in combination on apoptosis of Hep-2 cells were detected by flow cytometry (FCM).Western blot was used to analyze the expressions of Bcl-2 and Bax proteins.Results The inhibition ratio of proliferation of Hep-2 cells was (53.83 ± 17.12) ％ in the astragalus group,(69.12 ± 27.12)％ in the cisplatin group,and (84.55 ± 27.84)％ in the cisplatin combined with Astragalus group,and was significantly greater than the control group (0％) (t =16.87,16.67,40.90,P ＜0.01),respectively.The apoptotic ratio of Hep-2 cells was (38.2 ± 13.6)％ in the astragalus group,(67.2 ± 17.8)％ in the cisplatin group,and (86.4 ± 25.1)％] in the cisplatin combined with Astragalus group,and was significantly greater than control group (17.1 ± 1.3) ％ (t =8.11,12.77,24.92,P ＜0.05),respectively.The effect in the combination group is better than the other group (t =11.33,9.37,P ＜ 0.01).The expressions of Bcl-2 and Bax proteins were changed.Conclusions The tumor-killing effect of cisplatin on laryngeal cancer Hep-2 cells could be enhanced significantly by the combination application of astragalus by the way of regulating the expression of Bcl-2/Bax.

Objective To study the protective effect of hydrogen sulfide(H2S) on intestinal ischemia-reperfusion(I/R) injury so as to provide a new clinical treatment on I/R.Methods NaHS was taken as a donor of H2S.Forty Sprague-Dawley rats were divided into 5 groups with 8 rats in each group: sham operation group,I/R model group,tetram ethylpyrazine group,and NaHS 7 ?mol/kg and 14 ?mol/kg groups.The contents of superoxidase dismutase(SOD),malondialdehyde(MDA) and glutathione peroxidase(GSH-Px) in serum and intestinal tissue were measured,respectively.The intestinal mucosal injury and histological alteration were observed.Results The content of MDA within serum and intestinal tissue was significantly reduced and the activities of SOD and GSH-Px were significantly increased.H2S could obviously reduce the injury in intestinal mucosa and glands.Conclusion H2S possesses a protective effect on intestinal I/R injury in rats.

Objective To study absorption characteristic of dioscin from Dioscorea nipponica Makino extract in rat intestine.Methods Single-pass intestinal perfusion (SPIP) model was used for rat in situ and HPLC was used to determine the concentrations of dioscin.The effects of different intestinal segments,drug concentration and P-glycoprotein (P-gp) inhibitor on intestinal absorption were investigated.Results Dioscin could be absorbed in the whole intestine,the absorption rate constant (Ka) and the apparent coefficient (Papp) of dioscin decreased following the sequence of ileum > duodenum =jejunum > colon.Absorption parameters of dioscin had no significant difference at different concentrations (40,80,120 mg·L-1).There were significant differences in Ka and Papp values between P-gp inhibitor group and no P-gp inhibitor group(P<0.05).Conclusion The saturate phenomena was not observed under the test range of drug concentration,and the absorption mechanism may be passive diffusion transport.Dioscin in Dioscorea nipponica Makino extract may be the substrate of P-gp.

Objective To compare the therapeutic effect of combined fascia sheath suspension and frontal muscle flap suspension in the treatment of congenital severe congenital ptosis.Methods 46 cases (58 eyes) with congenital severe upper eyelid prolapse who were treated from March 2015 to March 2016 in Eye Hospital of Hebei Province were selected.The patients were divided into two groups:combined fascial sheath suspension group and frontalis muscle flap suspension.Comparisons of postoperative patients with eyelid height,eyelid radian,corneal exposure with eyes closed,eyelid activity,complication of the situation were carried out.And patient satisfaction survey was conducted.Results The effective rate of combined fascial sheath suspension group was 93.10％,the complication rate was 6.9％,and the patient satisfaction rate was 91.22±0.37,significantly better than the frontal muscle flap suspension group of patients (75.86 ％,24.14 ％ and 75.05 ± 0.28,respectively).The time of closure of the eyelid was shortened,the complications were less,and the eyelid had better activity.The difference between the two groups was statistically significant (P＜0.05).Conclusions Combined fascia sheath for congenital severe upper eyelid droop is significant,with fewer complications and a higher rate of satisfaction,which is worth clinical promotion.

Objective To research the relationship between high temperature and population death in cardio-cerebrovascular diseases in Shijiazhuang.Methods The time series of maximum daily temperature and daily death number of cardio-cerebrovascular diseases were described,and the relationship between daily maximum temperature and daily mortality of cardio-cerebrovascular diseases in summer was analyzed.The impact of daily highest temperature in summer from 2009 to 2011 on daily death of cardio-cerebrovascular diseases was analyzed.Results In summer,the highest temperature which could reach to 41.7℃ emerged mostly in July and August,and when the highest temperaiure was higher than 34℃,cardio-cerebrovascular diseases death increased obviously as the temperature increasing.The relative humidity was more than 70％ in most time of the year round.The excessive death in hot days accounted for 10.9％ in which the old people occupied the majority.Conclusion The extreme high temperature may obviously increase the cardio-cerebrovascular death in Shijiazhuang.

BACKGROUND: Research has showed that the abnormal expression of some proteins closely relates to the occurrence and development of cerebral glioma. However, the relationship between the abnormal expression of CyelinD1protein and the occurrence, development and prognosis of glioma is still uncertain which needs further study.OBJECTIVE: To study the expression of CyclinD1 protein in cerebral glioma and relationship between it and the impact of tumor DESIGN: Control study based on pathological specimens.SETTING: Neurosurgery department of a university hospital.PARTICIPANTS: Totally 48 glioma specimens of different malignaut degree were collected from the patients who accepted surgery treatment in Neurosurgery Department of Second Hospital of Xi' an Jiaotong University during January 1990 and December 1995. Twelve normal cerebral specimens were from the non-tumor patients who were conducted intracranial pressure reducing in Neurosurgery Department of Second Hospital of Xi' an Jiaotong University during January 1990 and December 1995.METHODS: S-P immunohistochemical technique was used to detect the abnormal expression of Cyclin D1 protein. Simultaneously, the dyeing results and clinical characters of patients were associated in order to conduct comparison.RESULTS: The positive expression rate of CyclinD1 protein in human cerebral glioma was 54. 12% while in normal cerebral tissue it was about 8.33%. There was significant difference between them(x2 =8. 148 1,P = 0. 004 3 ) . And the positive expression rate in cerebral glioma of low malignancy was 37.04% while in specimens of high malignancy it was 76.19%, there was significant difference (x2 = 7. 294 0, P = 0. 006 9). The positive expression rate of CyclinD1 protein in specimens of patients with long survival period and short survival period after surgery was 70. 37% and 33.33% respectively with significant difference between them (x2 = 6. 5268,P =0.010 6).CONCLUSION: CyclinD1 is closely related to the occurrence and development of human cerebral glioma. It has provided experimental evidence for the prevention to the occurrence of glioma and the estimation of its prognosis by studying the abnormal proliferation of glioma cells targeted on CyclinD1.

Objective To explore application value of blood flow ratio indexes in the diagnosis of Hashimoto's thyroiditis(HT) with different thyroid functions.Methods One hundred and four patients who were diagnosed clinically as HT were enrolled in the study.The patients were classified into three groups according to thyroid functions:the hyperthyroidism group,the hypothyroidism group and the euthyroidism group.Thirty-two volunteers with normal thyroid functions were enrolled as control group.All the cases were examined with ultrasound and five blood flow ratio indexes were calculated automatically.Their differences in the four groups were compared.Results ①Among the five blood flow ratio indexes,three indexes(mean ratio,maxratio and minratio) had significant differences between each two groups(P ＜ 0.001),the other two indexes didn't have any differences among the four groups.②Two receiver operating characteristic (ROC) curves on meanratio were drew:a)HT with hyperthyroidism and HT with euthyroidism;b) HT with euthyroidism and HT with hypothyroidism.The cutoff value as a result of the ROC analysis of HT with hyperthyroidism and HT with euthyroidism was 0.235 with the maxim of specificity and sensitivity.The cutoff value of HT with euthyroidism and HT with hypothyroidism was 0.113 with the maxim of specificity and sensitivity.Both Bland-Altamn scatter diagrams and high intraclass correlation coefficient(ICC) showed that blood flow ratio indexes have high repeatability.Conclusions Blood flow ratio indexes are promising quantitative indexes in reflecting the vascularity of thyroid parenchyma,and they are helpful in the differential diagnosis of HT with different thyroid functions.

Type 2 innate lymphoid cells ( ILC2s) are recently identified members of the innate lymphoid cell ( ILC) family. These cells are capable of producing Th2-type cytokines such as IL-5 and IL-13 in response to epithelial cell-derived cytokines IL-25 and IL-33 and play critical roles in allergic diseases such as bronchial asthma. Further investigations on ILC2s will enhance the better understanding of type 2 immune responses and may provide new strategies for the treatment of allergic asthma. In this review, we fo-cus on the origin, location and biological function of ILC2s as well as their possible roles in the pathogenesis of bronchial asthma.

Objective:To compare the histological differences between magnetic anastomosis and traditional suture in canine portal vein (PV) .Methods:Eighteen healthy Chinese garden dogs, either gender, 8-12 months and weighing 13.5-18.9 kg, were randomly divided into magnetic compressive anastomats (MCA) group ( n=9) and hand-sewing (HS) group ( n=9) for PV reconstruction. The time of PV anastomosis was compared between the two groups. HE and Masson staining were performed immediately and at 4, 8, 12 and 24 weeks after operation. The ultrastructure of the anastomosis was observed using scanning and transmission electron microscopy. Results:All dogs survived. The PV anastomosis time was significantly shorter in MCA group (3.58±2.75) min than that HS group (12.89±3.12) min, P<0.01. In MCA group, the vascular wall of anastomotic stoma was well aligned immediately after operation, and the shrinkage was obvious in HS group by gross eyes. At 24 weeks, electron microscope scanning showed the re-endothelialization was smooth and endothelial cells arranged regularly at the anastomotic site of the MCA group, whereas different-sized and irregularly aligned endothelial cells and large collagenous fibers arranged in disorder were present at the HS anastomotic stoma. Representative HE and Masson staining confirmed that the magnetic device was associated with decreased infiltration of inflammatory cells and deposition of fibrotic collagen at 24 weeks explanted anastomotic stomas compared with the HS group. Conclusions:Compared with the HS, MCA produced shorter anastomosis time, smooth anastomotic intima, light fibrous tissue hyperplasia, no foreign body residue, mild inflammatory reaction and reliable technique for canines PV anastomosis.