Abstract: Occupational epidemiology aims to explore the effect of occupational hazards on the health of workers and understand ， their mechanisms. It plays an important role in occupational health and occupational medicine.Currently occupational ， ， exposures in the workplace are complex and diverse and multiple factors affect workers´ health at the same time. Therefore it is important to elucidate the pathogenesis of occupational disease caused by occupational hazards and implement early - - intervention. System epidemiology collects data on multi level exposure and multi omics information to conduct network analysis - on the relationship amongrisk factors. and to study the mechanisms of exposures and health outcomes based on multi level data. ， ， ， ， Using the study design of system epidemiology occupational environmental lifestyle and social factors are combined as a ， system to evaluate the health of workers which can better evaluate the adverse health effects caused by occupational hazards. - ， ， The studies base on multi omics design will explore the pathogenesis of occupational diseases at the molecular cellular and tissue levels to evaluate the impact of occupational hazards on workers´ health and to explore interventions from multiple - perspectives to reduce the occurrence of occupational or work related diseases.

Aim The study is to observe the clinical efficacy of losartan in hypertentive patientswith left ventricular hypertrophy. Methods 21 case were given losartan for 20 wk and 24h ambulatory blood pressure monitoring and color doppler echocardiography were per-formed in the patients before and after treatment.Results The 24 h SBP, 24 h DBP,dDBP, nSBP were from (151 ? 15) 、(93 ?9)、(155 ? 15)、(96 ? 10)、(146 ? 16)、(88 ? 11)mmHg before treatment to (132 ? 11)、(82 ? 8)、(137 ? 12)、(88 ? 9)、(120 ? 9)、(120 ? 15)、(74 ? 9) mmHg after treatment respectively and the IVST, PWT and LVMI were from(14.2 ? 1 .5) mm、(13. 9 ? 1. 45) mm、(152. 1 ? 24. 2) g? m2-1 BSA before treatment to(12. 1 ? 1. 31) mm、 (12. 2 ? 1. 41) mm、(130. 6 ? 23. 1) g? m2-1 BSA after treatment re-spectively. All the parameters after treatment in the patients were significantly decreased ascompared with those before treatment (P

Objective To estimate curative effect of reconstruction of rabbit knee joint cartilage defect with the homogeneitic tissue engineered cartilages.Methods The chondrocytes were isolated and collected from articular cartilages of eight New Zealand white rabbits.The tissue engineered cartilages after culturing chondrocytes and atelocollogen for two days.Cartilage defects were created in both keen joint of twenty-six rab- bits.Complexes of chodrocytes and atelocollagen was grafted into the defect of left knee joint at once as experi- mental group,and no implantation were served as control.General and histological examination were respec- tively performed in both group at four weeks and eight weeks after surgery.Results After implantation,the defects were filled with cartilaginous tissue in experiment group,while there were only tissue in control group. Histologically,defective areas were filled with chondrocytes in experiment group,but only fibroblast in control group.Conclusion The implantation of the tissue engineered cartilages contenting with chondrocytes and atelocollogen can effectively improve reconstruction of rabbit knee joint.

A total of 121 subjects comprising 40 normal subjects,58 patients with overweight or obesity and 23 patients with Cushing's syndrome were recruited in the study.The modified radioimmunoassay (RIA) for salivary cortisol test was established'and its normal range was determined.Then the diagnostic value of the salivary cortisol for the initial diagnosis of Cushing's syndrome was evaluated and single midnight salivary cortisol test demonstrated a sensitivity of 100.0% and specificity of 91.4 %.Salivary cortisol test can be recommended as a first-line diagnostic parameter for Cushing's syndrome.

Objective To evaluate intervention in combination with choledochoscopic in treatment of biliary obstruction after orthotopic liver transplantation.Methods A retrospective review was performed in the 36 patiants with biliary strictures and bilary cast after the liver tiamsplantalion.All the patients received changing catheters,T-tube sinus tract dilation,choledochoscopic treatment,keeping catheters drainage and supporting.Result 26 patiants got satisfactory results and 8 controlled.The left 3 patients underwent retransplantation.Conclusion Intervention in combination with choledochoscopic treatment is effective to deal with biliary obstruction after liver transplantation.

Objective To apply continuous subcutaneous pulse infusion of gonadotropin-releasing hormone (GnRH) to treat patients with central secondary amenorrhea,and to observe the induction of spontaneous ovulation and natural fertilization.Methods Using micro-pulse infusion pumps with each 90-minute infusion of LHRH 10 μg daily,the serum LH,FSH,estrogen,and progesterone levels ; and change in endometrium and ovarian size before and after treatment were monitored.The end point is natural pregnancy.Results The levels of serum LH,FSH,and estrogen were obviously increased after 4 weeks of treatment.The natural menstrual cycle was rebuilt after 8 weeks of treatment.The patient was pregnant and the treatment was stopped by 16 weeks.The experience of pregnancy was favourable.40 weeks later,the patient delivered a healthy female infant via caesarean section.Conclusions It was the first time in China that the technology of micro GnRH pump was applied in patients with secondary central amenorrhea.The result demonstrates that this technology can perfectly simulate the physiology of hypothalamic GnRH secretion.At present,more patients are included in this research to confirm the effectiveness.

Objective To explore the reason of misdiagnosis and discuss the reoperation in thyroid carcinoma.Methods The data of 77 patients that had reoperation because of misdiagnosis were analyzed.Results The daignosis of all 77 cases were only based on pre-operative physical and uhrasound examination.The post-reoperative follow up (3～41 monthes):no case was found local recurrence.Conclusions The preoperative frozen section may avoid misdaignosis and the effect of reoperation for misdaignosed cases are satisfactory.

This paper sums up some studies in the last decade regarding the inhibitory effects of traditional Chinese herbs on growth factor induced proliferation of vascular smooth muscle cell (VSMC) via directly measuring the mRNA expression of its growth factors and the related receptors by electron microscope, immunohistochemistry, blot and hybridization in situ.
Cell Proliferation ; drug effects ; Cells, Cultured ; Drugs, Chinese Herbal ; pharmacology ; Fibroblast Growth Factor 2 ; antagonists & inhibitors ; Humans ; Muscle, Smooth, Vascular ; cytology ; metabolism ; Platelet-Derived Growth Factor ; antagonists & inhibitors

OBJECTIVETo study topiramate's new functions according to the medicinal property combinations, in order to apply the traditional Chinese medicinal theory in discovering new purposes of old drugs.

METHODAccording to New Traditional Chinese Medicinal Families--Chemical Traditional Chinese Medicines, the authors found out topiramate's property. Then based on the therapeutic principle of diabetes, hypertension, epilepsy and lung cancer, as well as the relations of efficacies and medicinal property combinations, they summarized the corresponding medicinal property combination modes, compared topiramate's medicinal property combination mode with corresponding medicinal property combination modes of these diseases, and predict topiramate's new functions.

RESULTAccording to the comparison, the corresponding medicinal property combinations were consistent with topiramate's medicinal property combinations as evidenced by corresponding literatures, whereas other medicinal property combinations were not.

CONCLUSIONBased on medicinal property combination modes, the authors screened topiramate's new functions according to e of TCM clinical experience, discovered topiramate's therapeutic effects on diabetes, hypertension and lung cancer in addition to epilepsy, and explore new drug function according to medicinal property combination modes, which could help greatly shorten the new drug R&D period.

Diabetes Mellitus ; drug therapy ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; chemistry ; therapeutic use ; Fructose ; analogs & derivatives ; chemistry ; therapeutic use ; Humans ; Hypertension ; drug therapy ; Lung Neoplasms ; drug therapy ; Phytotherapy

In this paper, we expatiate the advance of Tricholoma matsutake including distributing, environment, pure culture, domesticating cultivation and artificial forcing breeding in the area of Changbai Mountain of China.