Objective:To discuss the relationship between the serum level of interleukin-6 (IL-6) and the presence of an intrauterine contraceptive device (IUCD). Methods:The experimentalgroup was subdivided into the bleeding and the non-bleeding groups which consisted of 64 womenwith IUCD. There were 60 healthy women in the control group. The serum levels of IL-6 and C-reactive protein (CRP) were detected by enzyme-linked immunosorbent assay (ELISA) in bothgroups. Results :In the experimental group,the serum levels of IL-6 in 3 cases were increased,andthere was a significant difference in comparison with those of the control group (P＜0. 01),butthere were no statistical differences between the bleeding group and the non-bleeding group withIUCD (P＞0． 05). Serum CRP was negative both in the experimental groups and in the controlgroup. Conclusion:The non-bacterial endometrial inflammation induced by IUCD causes the in-crease of serum level of IL-6 in some women. It is suggested that IL-6 may play an important rolein the contraceptive mechanism of IUCD.

〔Abstract〕 The paper introduces the application of association rules in the library .With circulation data of freshmen in different ma-jors, in terms of different majors and grades of the college , it extracts partial records suitable for data mining , analyzes phases of data preparation and data mining by use of association rules , and provides technical support for in -depth conduction of reader services .

Objective To investigate the changes of CD4~+ T cell subset in the role of immuno-pathogenesis of type 1 diabetes mellitus(T1DM). Methods Real-time PCR was used to evaluate the ex-pression levels of transcriptional factors (T-bet, GATA-3, Foxp3, ROR-γt), cytokines (IFN-γ, IL-4, IL-10, IL-17A) and negative regulatory factors (CTLA-4, GITR) mRNA from CD4~+ T cells. The proportions of Th1, Th2, Tr and Th17 cells in peripheral blood were detected by flow cytometric analysis. Plasma cyto-kine (IFN-γ, IL-4, TGF-β and IL-6) concentrations were measured by enzyme-linked immunosorbent assay (ELISA). Results (1) The proportions of Th1 cells in peripheral blood from children with T1DM were siguificanfly increased than that of healthy controls, and proportions of Th2 were decreased (P < 0.01). There were no significant differences between diabetic patients and healthy controls regarding the proportions of Tr cells and Th17 cells(P >0.05). (2) Transcription levels of T-bet and IFN-γ mRNA were significantly up-regulated, while GATA3 and IL-4 were significantly down-regulated in children with T1DM. The mRNA expression levels of Tr negativity regulatory factors such as IL-10, CTLA-4 and GITR were lower in CD4~+ T cells from children with TIDM compared with the controls(P <0.01). There were no statistically differences to be observed in mRNA expression levels of ROR-γt and IL-17A genes between two groups(P > 0.05).(3) In comparison with controls, serum concentrations of IFN-γ or IL-4 were remarkable increased or de-creased respectively (P < 0. 01), while TGF-β and IL-6 did not change in children with T1DM (P > 0.05). Conclusion The Th1/Th2 imbalance might be play an important role in immunopathogenesis of T1DM. Functional deficiency of Tr cell might further exacerbate Th1/Th2 imbalance and lead to disturbance of cellu-lar immune response.

Site-saturation mutagenesis is a newly-developed technology in protein engineering.By manipulating the encoding genes,it can rapidly obtain the mutants of desired proteins whose target residues are substituted by 19 other common amino acids.Site-saturation mutagenesis could serve not only as a powerful tool in protein engineering,but also as an important method in exploring the structure-function relationship of proteins.Several techniques were summarized to achieve site-saturation mutagenesis and introduce their application status in the protein engineering.The problem and promising future of its application were also discussed.

Objective: To investigate the clinical effect of cervical conization under cervical endoscopy in high-grade cervical intraepithelial neoplasia (CIN). Methods: From June 2017 to June 2019, 100 patients with grade II and III CIN admitted to Harbin First Hospital were divided into control group and observation group with 50 cases in each group by random number table method.The control group was treated with traditional cervical cold knife conization, while the observation group was treated with cervical conization under endoscopy.To compare the therapeutic effects of two surgical methods. Results: The incidence of positive margin were significantly lower than that in the control group(8%(4/50) and 18%(9/50)), and the difference was statistically significant (χ²=4.98, P<0.05). The postoperative follow up was proceed one year.The incidence of cure were significantly higher than that in the control group(96%(48/50)vs.84%(40/50)), and the residual rate and recurrence rate were lower than that of the control group(6%(3/50) and 14%(7/50), 2%(1/50)and 8%(4/50)), the difference was statistically significant (χ²=10.56, 3.98, 13.96, all P<0.05). The incidence of postoperative complications in the observation group was significantly lower than that in the control group [6% (3/50) and 18% (9/50)], the difference was statistically significant (χ²=11.25, P<0.05). There was no significant difference in bleeding volume, operation time and wound healing time between the two groups (t value was 1.46, 1.26 and 0.98 respectively, all P>0.05). Conclusion The cervical conization through cervical canal endoscope can accurately locate the focus of high-grade CIN, with higher rate of lesion clearance, lower rate of lesion recurrence and complications.

OBJECTIVETo study pharmacokinetic effect of Aikeqing Granule (AG) by different medication ways on zidovudine (AZT) in highly active antiretroviral therapy ( HAART) of rats.

METHODSTotally 36 rats were administered with corresponding medications by gastrogavage, group I [HAART: AZT 31.5 mg/kg +3TC 31.5 mg/kg + Efavirenz (EFV) 63.0 mg/kg], group II (HAART+AG525 mg/kg), group III (HAART and AG 525 mg/kg after a 2-h interval). Drug concentrations of AZT were determined by high performance liquid chromatography-mass spectroscopy (HPLC-MS) before HAART, and at 0.5, 1, 2, 3, 4, 6, 8, 10, 12 h after HAART, respectively. Pharmacokinetic parameters [such as t1/2, Tmax, Cmax, AUCo-t, plasma clearance rate (CL)] were calculated by DAS2.0 Software.

RESULTSThe-equation of linear regression of AZT was good, with the precision, coefficient of recovery, and stability definitely confirmed. AUC in group II and III was larger than that of group I. There was no statistical difference in t1/2, Tmax, Cmax, AUC0-12 h, or AUC0-∞ among groups (P > 0.05).

CONCLUSIONAG combined HAART could enhance the Cmax of AZT.

Animals ; Antiretroviral Therapy, Highly Active ; Benzoxazines ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; pharmacokinetics ; pharmacology ; Mass Spectrometry ; Rats ; Zidovudine ; pharmacokinetics ; pharmacology

Aim To investigate the inhibitory effects of gossypol on migration in gastric carcinoma cell lines and its mechanisms. Methods Gastric carcinoma cells were treated with gossypol at different concentra-tions. The effects of gossypol on cells proliferation were measured using the MTT assay. The migration of gas-tric carcinoma cells was detected by transwell assay. The activation of Akt/β-catenin pathway and the ex-pressions of pathway related proteins ( p-Akt,β-cate-nin, cyclin D1, MMP-2, E-cadherin and vimentin ) were detected by Western blot. Results Gossypol treatment could significantly inhibit the proliferation of gastric carcinoma cells in a dose-dependent manner. Transwell assay showed that the migration ability of
gastric carcinoma cells was significantly decreased. The inhibitory effect of gossypol on cells migration was more significant than the effect of gossypol on cells prolifera-tion. Compared with the control group, treatment with gossypol significantly suppressed the expressions of p-Akt,β-catenin, cyclin D1, MMP-2 and vimentin pro-tein, whereas the expression of E-cadherin was signifi-cantly up-regulated in gastric carcinoma cells in a dose-dependent manner. Conclusion These results demonstrate that gossypol represses cell migration of gastric carcinoma cells through the down-regulation of the activity of Akt/β-catenin pathway.

Objective To explore the genetic interactions between angiotensin-convertingenzyme (ACE) I/D and methylenetetrahydrofolate reductase (MTHFR) C677T genotypes in middlecerebral artery stenosis (MCAS) among the asymptomatic residents in Foshan area of China. MethodsUsing a cluster sampling method, 2500 subjects were randomly selected from the residential communitiesof Rongqi town of Foshan area, Guangdong Province. By means of epidemiological questionnaire survey,physical examination, examination of the biochemical markers and transcraniai color Doppler (TCD), 897eligible subjects (306 males and 591 females) were selected from this population and subsequentlydivided into MCAS group and control group according to the TCD results. ACE and METHFR genepolymorphism analyses were conducted using amplified fragment length polymorphism-polymerase chainreaction (AFLP-PCR) and PCR-restriction fragment length polymorphism (PCR-RFLP). Chi-square test, t test, Mann-Whitney test and logistic regression analysis were used to analyze the data. ResultsGender, age, waist-to-hip ratio (WHR) and Ⅱ+CC genotype distribution in the subjects with MCAS weresignificantly different from those in the control subjects. Logistic regression analysis identified age andACE Ⅱ+ MTHFR CC genotype as the independent factors that affected MCAS. Conclusion There aregenetic interactions between ACE I/D and MTHFR C677T genotypes, and the ACE Ⅱ+MTHFR CCgenotype is an independent genetic factor for protection against MCAS in the asymptomatic residents inFoshan area of China.

OBJECTIVETo demonstrate the changes of resting energy expenditure (REE), substrate metabolism and body composition in cancer patients.

METHODSFrom September 2004 to March 2008, REE, carbohydrate oxidation (CO) and fat oxidation (FO) in 936 cancer patients and 840 control subjects were measured by indirect calorimetry. Bioelectrical impedance appliance was applied to assess intracellular fluid, extracellular fluid, fat mass (FM) and fat free mass (FFM) in the two groups.

RESULTSNo difference in REE was found between the cancer patients and non-cancer patients [(1452.2 +/- 196.4) kcal/d vs. (1429.5 +/- 182.6) kcal/d, P = 0.136]. But REE/FFM and REE/pREE were elevated in cancer patients than in controls (all P < 0.05). Of the cancer patients, 48.6% were hypermetabolic, 42.9% normal and 8.5% hypometabolic, while those were 22.5%, 58.5% and 19.0% in controls. Cancer patients had higher FO [(77.8 +/- 11.3) g/min vs. (67.1 +/- 12.1) g/min, P = 0.000], lower CO and npRQ [(68.7 +/- 10.5) g/min vs. (88.8 +/- 12.1) g/min, P = 0.000; 0.782 +/- 0.012 vs. 0.810 +/- 0.014, P = 0.000]. Cancer patients exhibited lower FM and FFM [(14.9 +/- 4.5) kg vs. (18.4 +/- 5.2) kg, P = 0.000; (44.4 +/- 7.2) kg vs. (46.1 +/- 8.1) kg, P = 0.008].

CONCLUSIONSElevated REE is common in cancer patients. Substrate metabolism of the cancer patients features in increased FO, decreased CO and npRQ, which is correlated with the elevated REE. FM and FFM loses in proportion in cancer patients.

Body Composition ; Carbohydrate Metabolism ; Energy Metabolism ; Fats ; metabolism ; Female ; Humans ; Male ; Neoplasms ; metabolism

In this study, polyacrylicacid precipitation alkalescence protein from Momordica charantia L. seeds was studied, and the effect of conditions on experiment was also evaluated. Isoelectric precipitation is achieved by adjusting the pH of a protein solution and is based on that a protein's solubility is at minimum at its pI. The sample was titrated to pH 6.0 with citric acid, and 14.62% proteins were precipitated. With hydrochloric acid to pH 4.0, 32.49% proteins were precipitated. With the acetic acid to pH 6.0 and pH 4.0, 26.17% and 38.72% proteins were precipitated, respectively. In the 1 mL Bitter melon seeds extraction(pH 4.0) adjusted by acetic acid, hydrochloric acid and citric acid, the optimum dosage of PAA (1%) precipiting alkalescency protein (pl 8.65-9.30) was 100 microL, 120 microL and 100 microL, respectively. The respective extraction (1mL) was titrated to pH 5.0, pH 4.0, and pH 3.0 by acetic acid. After isoelectric precipitation, the PAA precipitation protein was performed. When concentration of PAA (1%) was 160 microL/mL, the protein decreased in the supernatant was 33.77% at pH 5.0, and 43.56% at pH 3.0. When concentration of PAA (1%) was 120 microL/mL, the protein decreased in the supernatant was 30.83% at pH 4.0. PAA-Protein complex could redissolve in alkaline conditions (pH > 9.0) and the protein most easilly redissolved when the NaCL was 3.0%. The bitter melon seeds extraction after PAA purification flowed through the Sephadex G-75 columns. The peaks I and II were obtained after 175 min and 300 min, respectively. SDS-PAGE and IEF analysis showed that the molecule weight from peaks I was 30 kD with pI 9.5, peaks II 10 kD with pI 9.3.
Acrylic Resins ; chemistry ; Chemical Precipitation ; Momordica charantia ; chemistry ; Plant Extracts ; chemistry ; Plant Proteins ; chemistry ; isolation & purification ; Seeds ; chemistry