Inflammatory Bowel Disease(IBD) is concerned with heredity,dysimmunity,environment and others,its characterized by chronic or relapsing inflammation within the gastrointestinal.IBD including two independent disease ulcerative colitis and crohn′s disease.In recent years with the incidence of IBD increased year by year,more women in reproductive age facing drug treatment.This article elucidated the effect of IBD and its treatment on perinatal.

Objective To evaluate combination therapy effects of ornidazole and pefloxacin on chronic periodontitis.Methods 200 cases of chronic periodontitis were chosen from the Stomatological Hospital of Hangzhou as study subjects.100 cases in observation group were treated with ornidazole and pefloxacin combination treatment, while another 100 cases in control group were treated with ornidazole.The treatments lasted 7 days.The effects and inflammation -related perimeters (including hs -CRP,IL -4,IL -6,IFN -γ)in patients'serum were measured. Results Probing depth,attachment loss and inflammation -related perimeters of the observation group were improved significantly,and even were much better than the control group (probing depth:t =2.113,P <0.05;attachment loss:t =1.894,P <0.05,hypersensitive C -reactive protein:t =2.001,P <0.05;IL -6:t =1.953,P <0.05;interferon -γ:t =1.976,P <0.05).And the total effective rate of the observation group was also better than that of the control group (χ2 =24.335,P <0.01).Conclusion Combination treatment of ornidazole and pefloxacin is more effective than single treatment of ornidazole,which is worthy of widely promoted in clinical.

Myelodysplastic syndrome(MDS) is a malignant clonal disease of hematopoietic system,characterized by dysplasia and ineffective hematopoiesis.Therefore,the morphology of bone marrow and peripheral blood cells are crucial in the diagnosis of MDS.The morphological features of marrow cells,the significance of morphological diagnosis,the progress in the study of morphological diagnosis and some major issues on morphological diagnosis of MDS are discussed in this article.

The effect of the opiate receptor antagonist naloxone on myocardial contractility and relaxation after acute coronary occlusion in rabbits and the relationship between its effect and ?-adrenergie receptor were observed. The results showed that during the early stage of acute coronary occlusion myocardial contractility and relaxation were significantly increased and cardiac function was improved by naloxone; The action of naloxone can be abolised by ?-adrenergic receptor blocker propranolol. These results indicated that there was a close correlation between the action of naloxone on myocardial contractility and relaxation and the adrenergic nerve activity.

Erythromycin A is a clinically important macrolide antibiotic with broad-spectrum activity. Its biosynthesis involves the formation of the 14-membered skeleton catalyzed by polyketide synthases, and the modification steps such as hydroxylation, glycosylation and methylation. Based on the understanding of the biosynthetic mechanism, it is reliable to genetically manipulate the erythromycin A-producing strain for production improvement and structure modification. In this paper, we reviewed the progress regarding erythromycin A in high-producing strain construction and chemical structure derivation, to provide insights for further development.
Anti-Bacterial Agents ; biosynthesis ; chemistry ; Erythromycin ; biosynthesis ; chemistry ; Glycosylation ; Hydroxylation ; Methylation ; Multigene Family ; Polyketide Synthases ; metabolism

Acetylation regulated by histone deacetylases (HDAC) has a broad influence on plenty of physiological processes and regulation of malignant tumor.HDAC inhibitors can promote tumor cell apoptosis and have little effect on normal cells,so they have been developed a new kind of anti-tumor agent,and part of them have entered clinical trials.Vorinostat and romidepsin have been approved by FDA for treating cutaneous T cell lymphoma patients with progressive,persistent and recurrent disease.Studies of the molecular mechanisms of the HDAC inhibitors will contribute to the further clinical application.

Objective To investigate the clinical characteristics, risk factors and prevention measures of carbapenem-resistant Klebsiella pneumoniae (CRKP) infection. Methods Thirty-nine cases whose CRKP isolation and culture were positive and who were confirmed with nosocomial infection in 2nd affiliated hospital medical school of Zhcjiang University between July 2006 and July 2008 were retrospectively investigated. Results There were 22 (56.4%) sputum specimens among CRKP samples. The average age of the patients was 64.0 years old and the average length of staying in hospital was 80.8 days. There wcre 36 patients who had been in intensive care unit (ICU) within 2 weeks and 26 were conscious disturbance,38 received urethral catheterization, 34 inserted with central venous catheter, 32 received tracheal intubation and 30 assisted with mechanical ventilation. There were 27 (69. 2 % ) patients who were co-infected with other bacteria and 8 were co-infccted with fungi. The mortality was 46. 2% in patients with CRKP infection. Before CRKP-positive culture, 27 (69.2%)experienced ＞4 kinds of antibiotics with the majority of β-lactams/β-lactamase inhibitors and carbapenems.Conclusions CRKP infection frequently occurrs in elder and patients who prolonged stay in hospital,especially patients in ICU. Invasive procedures could increase the infection opportunities.

Objective To explore, the levels of serum highsensitive C-reactive protein (hs-CRP) in different subtypes of acute ischemic stroke (AIS) and its significance. Methods According to TOAST criteria, 124 cases of AIS were divided into four groups: large-artery atherosclerosis (LAA,47 cases), small-artery occlusion (SVO,37 cases), cardiogenic cerebral embolism (CE,21 cases), acute stroke of other determined etiology and stroke of other undetermined etiology (ODE and UE, 19 cases). The serum concentration of hs-CRP was measured with the immunoturbidimetry in every patient of each group at 72 hours, 7 and 14 days after admitted to hospital. Meanwhile 81 healthy persons were involved in control group. Results The serum concentrations of hs-CRP at 72 hours, 7 and 14 days after onset were (10.77 ± 4.27),(16.41±5.61), (7.63±3.59) mg/L in LAA group;(3.99± 1.56), (6.45±3.25), (4.22±3.21) mg/L in SVO group; (11.60±4.85), (25.14±7.12), (9.24±4.61) mg/L in CE group; (6.09±2.43), (9.65 ±4.65), (5.89 ± 2.68) mg/L in ODE and UE group. The serum concentrations of hs-CRP in LAA group, CE group, ODE and UE group were significantly higher than those in control group [(4.26 ± 1.34) mg/L] (P <0.05) except for that in SVO group, the level of serum hs-CRP in the three groups showed significant difference among the different time (P< 0.05). Conclusions The level of serum hs-CRP in AIS patients is increased and positively correlated with the disease severity. The changes of hs-CRP level are performed in various subtypes of TOAST, and show time-dependent effects. Inflammatory response may play an important role in the pathological mechanism of AIS.

Objective To investigate folic acid and vitamin B12 on the plasma homocysteine (Hcy) levels and neurological function in young and middle-aged acute ischemic stroke patients with hyperhomocysteinemia (HHcy).Methods Young and middle-aged acute ischemic stroke patients with HHcy were enrolled.They were randomly divided into either an intervention group or a control group.The patients with cerebral infarction in both groups were treated with conventional treatment.At the same time,the patients in the intervention group were treated with folic acid 5 mg and vitamin B12 25 μg,3 times a day for 4 weeks.Those in the control group were given placebo.The next day after admission and thereafter,the plasma Hcy levels were determined once every week.At the time of admission and after 4-week treatment,the National Institutes of Health Stroke Scale (NIHSS) was used to evaluate neurological deficits.Results A total of 78young and middle-aged acute lschemic stroke patients with HHcy were enrolled (n =39 in each group).The baseline plasma Hcy levels and the NIHSS scores in all patients had significant linear correlation (r =0.717;P＜0.01).Four weeks after treatment,the plasma Hcy levels of the intervention group were significantly lower than those of the control group (15.07 ± 2.01μmol/L vs.21.29 ± 2.48 μmol/L; t =4.539; P ＜0.05),but there was no significant difference in the NIHSS scores (4.87 ± 2.17 vs.5.13 ± 1.67; t =0.585,P =0.560).Conclusions The baseline plasma Hcy level was positively correlated with the severity of stroke.Folic acid in combination with vitamin B12 could effectively decrease the plasma Hey level in young and middle-aged acute ischemic stroke patients with HHcy,but it had no significant effect on the improvement of neurological function.

Objective Comparing with traditional teaching methods of oral histopathology, to probe whether the interactive teaching system of the digital microscope can improve the teaching effi-ciency of experiment of oral histopathology courses. Methods The subjects were the 2010 grade students (40 students) and the 2011 grade students (38 students) majoring in stomatology of South Medical University, and they were evenly divided into 2 groups at random. In the first part of the ex-periment of Grade 2010, the teaching of traditional optical microscope was used in a group of experi-mental courses, and interactive teaching with digital microscope was used in the other group. In the second part of the experiment the two groups swapped the teaching method. While in the whole exper-iment of Grade 2011, traditional optical microscopes were adopted in one group, and in contrast, the interactive teaching system of the digital microscope was adopted in the other group. The P values of the 5 indexes were less than 0.05. After the courses, the 2010 grade students received the questionnaire survey and the 2011 grade students received the quiz about the experimental course, and then the evaluation results of the two groups were compared for t inspection, using SPSS software t test. Result The questionnaire results of Grade 2010 showed that the scores of digital microscope interactive group were higher than those of traditional teaching group in satisfaction with teaching , teacher-student interaction, classroom atmosphere active degree, learning interest, and the understanding of the teach-ing content. The experiment course content test results of Grade 2011 showed that the digital interactive group students averaged 46.26, while the average score of the traditional teaching group was 42.78%. The difference between the two groups had statistical significance, P=0.001. Conclusion Compared with the traditional teaching methods, the interactive teaching system of the digital microscope can enhance the academic grades, improve the teaching efficiency of experiment of oral histopathology courses, and elevate the teaching quality.