Objective To observe and compare the efficacy and safety of chloroprocaine and ropivacaine for epidural labor analgesia.Methods 86 cases of voluntary acceptance of maternal painless natural childbirth were selected in the study.43 cases were given chloroprocaine epidural analgesia (chloroprocaine group),and the other 43 cases were given ropivacaine epidural analgesia (ropivacaine group).The pain (VAS score),lower limb motor block degree(MBS score),fetal heart rate(FHR) and contractions duration of maternal prenatal and medication immediately after 10min,20min,40min,80min were compared between two groups.The first,second and third stage of labor and fetal output after 1 min,5min,10min Apgar score were compared.The incidence of adverse events were observed.Results In the chloroprocaine group,the 10min VAS score was (2.10 ± 1.02),which was significantly lower than (4.31 ± 1.13) in the ropivacaine group (t =4.565,P ＜ 0.05).In the chloroprocaine group,analgesia 20min MBS score was (0.24 ± 0.03),which was significantly higher than (0.11 ± 0.04) in the ropivacaine group (t =4.126,P ＜ 0.05).In the chloroprocaine group,4 cases occurred nerve injury,which was more than the ropivacaine group (1 case),the difference was statistically significant (x2 =4.263,P ＜ 0.05).Conclusion Chloroprocaine and ropivacaine for epidural labor analgesia have superior efficacy and the clinical efficacy is similar.Chloroprocaine has the advantage of quick results,but the medication about 20min time period that the drug might lead to a greater degree of lower limb motor block,and has the risk of nerve injury,pregnant women can choose according to their medication.

Currently,the overall situation of information literacy level of researchers in hospitals is generally low.This paper explores the connotation of information literacy and stresses the importance of information literacy cultivation for scientific researchers.Suggestions are also made for cultivation of information literacy.

Currently,the medical technology and service capability in grass-root medical institutions are still at low level.This article emphasizes the need for pilot bases of appropriate medical emergency technologies,introducing our experiences in this respect and the effects.We hope to offer reference for the promotion of appropriate medical emergency technologies.

[Summary] Epigenetics defines heritable changes in gene expression that are not coded in the DNA sequence itself.Three systems,including DNA methylation,RNA-associated silencing and histone modification,are used to initiate and sustain epigenetic silencing.Type 2 diabetes mellitus(T2DM) is a polygenic disorder,which is caused by both genetic and environmental factors.However,pathogenesis of T2DM has not been elucidated.Recent studies have indicated that epigenetics may play an important role in the pathogenesis of T2DM,which is involved in the development and differentiation of β cell,secretion of β cell,insulin sensitivity and so on.Researches related to epigenetics may provide a new measure and target to clarify the pathogenesis of T2DM as well as prevent and treat the disease.

Objective To describe the development of nodules of altered hepatocytes (NAH) in chronic hepatitis B and to reveal progression of the nodules to hepatocellular carcinoma (HCC). Methods HCC, NAH and ordinary regenerative nodules (ORN) were identified and compared histologically. Expression levels of hepatitis B virus (HBV) antigens, mitoactivity and p53 accumulation in these lesions were evaluated by immunohistochemistry. Results Multiple foci of altered hepatocytes (FAH) and NAH were identified in the liver parenchyma surrounding HCC in all of the samples examined. Sequential architectural and cellular changes were observed during the progression of FAH to NAH and HCC. Expression levels of HBV surface and core antigens were found to be significantly decreased in ORN, NAH and HCC, with their positive rates being 70 % (35/50), 50 % (25/50), 10 % (5/50) and 60 % (30/50), 40 % (20/50), 6 % (3/50), respectively (P ＜0.05). Ki-67-1abelling indices were determined to be (0.58±0.49) %, (2.46±1.05) % and (40.36±26.27) %in these lesions, respectively (P ＜0.05). Nuclear p53 accumulation was found only in HCC. Its occurrence was associated to a high histological grade, with its frequencies being 13 % (1/8), 41% (11/27) and 73 % (11/15)in grade 1, 2 and 3 lesions, respectively. Conclusion NAH lesions, identified by their morphologic features and mitoactivity elevation, are detectable in resected liver samples with chronic hepatitis B and cirrhosis. They represent a common HCC precursor and can be used as a surrogate marker for the surveillance of high-risk individuals.

ObjectiveTo investigate the positive rate of thyroid peroxidase antibody(TPO-Ab) in the diabetic in-patients. MethodsThe positive rates of thyroid peroxidase antibody ( TPO-Ab ) was measured in 1884 subjects, including 1508 type 2 diabetes mellitus ( T2DM ), 76 classic typetype 1 diabeties( T1 DM ), 44 latent autoimmune diabetes in adults (LADA) and 256 "untype" diabetics ( NTDM ). Clinical data were registered and analyzed. Results( 1 )The positive rates of TPO-Ab were 14. 59％ in T2DM(220/1508) ,42. 11％ in T1DM (32/76) ,31.25％ in NTDM ( 80/256 ), 63.64％ in LADA group ( 28/44 ), respectively. The positive rate of T2DM was significantly lower than that of LADA ( P ＜ 0. 05 ), but no significant difference was found in the coparison between T1 DM and NTDM ( P ＞ 0. 05 ). ( 2 ) There were no significant differences between LADA and NTDM groups in the comparison of age, course of disease and BMI ( Ps ＞ 0. 05 ). Conclusion①The positive rate of TPO-Ab in NTDM was significantly higher than that of T2DM, whereas significantly lower than that of T1 DM and LADA.②The positive rate of TPO-Ab was highest in LADA, which indicate that LADA and AIT might have the common etiological mechanisms. ③There is a consisted increasing trend in the positive rate of TPO-Ab from T2DM ,NTDM,and classic T1DM to LADA.

Objective To study the protective effects and mechanism of aqueous extract of arctium lappa root on vas?cular endothelial cell injury in hypertensive rats. Methods The hypertensive rat model was induced by N-nitro-L-argi?nine. Rats were randomly divided into normal control group, model control group, positive control group (aptopril 15 mg/kg), low concentration of aqueous extract of arctium lappa root (0.5 g/kg), medium concentration of (1 g/kg) and high concentra?tion of (2 g/kg) groups. After six weeks of continuous intragastric administration, the systolic blood pressure levels at tail ar?tery were measured at 1, 4, 7, 10, 13, 16, 19, 22, 29, 36 and 42 d after treatment. And other indicators related to inflammato?ry factors were detected including C-reactive protein (CRP) and interleukin (IL)-6. The intercellular adhesion molecule-1 (ICAM-1) level was detected by taking samples of thoracic aorta. Results (1) The systolic blood pressure level at tail ar?tery was significantly lower in aqueous extract of arctium lappa root group than that of model control group ( P<0.05). (2) The aqueous extract of arctium lappa root can significantly improve the vascular endothelial cell injury, suppress vascular endo?thelial cell loss and blood cell adhesion, and cell proliferation with collagen fibers in muscle membrane. ( 3) The serum levels of IL-6, CRP and vascular endothelial ICAM-1 were significantly reduced in aqueous extract of arctium lappa root group than that of model control group (P<0.05). Conclusion Aqueous extract of arctium lappa root can significantly improve vascular endothelial cell injury in hypertensive rats. The mechanism may be related to the inhibition of inflammatory cyto?kines like IL-6, CRP and the expression of ICAM-1, and the improvement of chronic inflammatory response in vascular en?dothelium of hypertensive rats.

OBJECTIVE:To investigate therapeutic efficacy and safety of levamlodipine and telmisartan combined with hydro-chlorothiazide in the treatment of anti-dipper hypertension. METHODS:Totally 150 patients with anti-dipper hypertension were ran-domly divided into group A,B,C,with 50 cases in each group. Group A was given Telmisartan tablet 40 mg+Hydrochlorothiazide tablet 10 mg,once a day,in the morning. Group B was given Levamlodipine tablet 5 mg,once a day,in the night. Group C was given Telmisartan tablet(usage and dosage same as group A)+Hydrochlorothiazide tablet(usage and dosage same as group A)+Le-vamlodipine tablet(usage and dosage same as group B). Treatment courses of 3 groups lasted for 8 weeks. The changes of electro-lyte and 24 h ambulatory blood pressure were observed and compared among 3 groups before and after treatment. The incidence of adverse reactions was recorded. RESULTS:There was no statistical significance in the electrolyte indexes in 3 groups before and af-ter treatment(P>0.05). Before treatment,there was no statistical significance in 24 h blood pressure among 3 groups(P>0.05). Af-ter treatment,the 24 h blood pressure of the patients in the 3 groups after treatment was lower than before treatment,and group C was lower than that of the group A and group B(P<0.05). After treatment,the rate of anti-dipper rhythm reversal in group C was significantly higher than group A and B,with statistical significance(P<0.05). There was no statistical significance in the inci-dence of ADR among 3 groups(P>0.05). CONCLUSIONS:Levamlodipine and telmisartan combined with hydrochlorothiazide show good therapeutic efficacy for anti-dipper hypertension,and can reduce 24 h blood pressure and effectively reverse anti-dipper rhythm with good safety.

Objective Focal nodular hyperplasia(FNH) is composed of multiple hyperplastic liver cell nodules,but its pathogenesis has not been elucidated. Foci (FAH) or nodules of altered hepatocytes (NAH) are precursors of hepatocellular adenoma (HCA) and carcinoma.This study aimed at identifying FAH and NAH from FNH and evaluating their role in FNH development.Methods 6 FNH lesions from 5 patients and 10 HCA from 9 patients were examined histologically,and expression levels of CD_(34) cytokeratin 19(CKl9) and Ki-67 antigen were demonstrated immunohistochemicailly.Proliferative activity was evaluated by Ki-67 antigen-labeling indices(Ki-67 LI).Results Multiple FAH and NAH were identified in all of the 6 FNH lesions. Whiie micmvasculatures were demonstrated by CD_(34) immunoreactivity in both HCA and FNH,their density and distribution were different in these two lesions,being diffuse in HCA and focal or nodular,mainly within NAH.CKl9 expression Was found in FNH,localized in ductal and ductular cells,but not within NAH and HCA.Average Ki.67 LI of 73 NAH(2.8%) was shown to be higher than that of the whole FNH lesions (0.6%),and had no statistieal difference comparable to that of HCA(1.8%).Conclusion Muhiple NAH are present in all classical FNH lesions.Unlike the surrounding parenchyma,NAH lesions are more proliferative and equipped with CD_(34)-positive microvasculatures as in HCA.

Objective To evaluate the clinical value of multi-locus polymerase chain reaction (PCR) for identifying Mycobacterium tuberculosis complex isolated in children. Methods The isolates were collected and were first determined by PNB/TCH medium. 7-point PCR sites including 16SrRNA, Rv0577, IS1561, Rv1510, Rv1970, Rv3877/8 and Rv3120, and 4-point PCR sites including ropB, RD1, RD8 (present), RD8 (deleted) were used to amplify them by PCR. Results Total of 204 isolates were collected, in which 199 were Mycobacterium tuberculosis, 3 were Mycobacterium bovis, and 2 were non-tuberculous mycobacteria by the PNB/TCH method. 4-point PCR analysis showed that 196 were Mycobacterium tuberculosis, 2 were Mycobacterium bovis, 3 were BCG species and 3 were non-tuberculous mycobacteria. 7-point PCR analysis showed that 191 were Mycobacterium tuberculosis, 2 were Mycobacterium bovis, 3 were BCG species, 4 were African Mycobacterium type I, 1 was Mycobacterium caprae, 1 was Mycobacterium microti and 2 were non-tuberculous mycobacteria. Conclusion Compared with the conventional method, the PCR identification in 4-point PCR method and 7-point PCR method could rapidly identify the BCG among the complex group in children tuberculosis. 7-point PCR method was able to identify all the subspecies of Mycobacterium, except Africa Mycobacterium. 4-point PCR method would be more rapid and easier in the identification of BCG strains.