Objective To know the effect of water supply improvement on prevention and control of the endemic arsenism. Methods 35 residents aged 45-65 years (21 male, 14 female) in a high arsenic area were selected for determination of urine arsenic, 21 residents aged 45-65 years (14 male, 7 female) in another high arsenic area for determination of hair arsenic and the residents in the control area were also selected. Results 16 years after the water supply improved (concentration of arsenic

OBJECTIVE:To observe clinical efficacy and safety of Zishen jianpi huoxue decoction combined with Xiaoxintong capsule in the treatment of type 2 diabetes complicating with silent myocardial ischemia (SMI). METHODS:126 patients with type 2 diabetes complicating with SMI were selected and randomly divided into control group(62 case)and observation group(64 cases). Both group were given diet guidance and hypoglycemic drugs as sulfonylureas,biguanides. Control group was given Xiaox-intong capsule 10 mg,tid;observation group was additionally given Zishen jianpi huoxue decoction 400-500 ml,bid. Both groups received treatment for 7 d. Therapeutic efficacy of thoracic obstruction,improvement of coronary artery branch stenosis and times and duration of electrocardiogram ST segment low voltage outlet were observed in 2 groups. ADR was compared between 2 groups. RESULTS:Therapeutic efficacy of thoracic obstruction and improvement of coronary artery branch stenosis in observation group were significantly better than in control group,with statistical significance(P<0.05);the times and duration of electrocardiogram ST segment low voltage outlet in observation group were significantly lesser shorter than in control group,with statistical signifi-cance (P<0.05). No obvious ADR was found in 2 groups. CONCLUSIONS:Zishen jianpi huoxue decoction complicating with Xiaoxintong capsule shows significantly therapeutic efficacy in the treatment of type 2 diabetes complicating with SMI with good safety.

Objective: To investigate the problems and improve the quality of experimental teaching for medical laboratory instruments.Method: A questionnaire was made among 100 laboratory medicine students in Chongqing University of Medical Sciences.Result: About eighty-six percent of the students were satisfied with the experimental teaching for medical laboratory instruments,but there were still problems: absence of clear objectives in experimental teaching;shortage of activity of medical laboratory instruments experiment;lack of modern large-scale instruments.Conclusion: the key points to improve experimental teaching quality are to set up clear experimental teaching objective;update instruments for experimental teaching;structure simulator laboratory with modern education simulator technology.

Students will be familiar with the major contents of clinical laboratory management,such as clinical laboratory quality management,laboratory creature safety containment,clinical laboratory accredit action through the course of clinical laboratory management for laboratory medicine students.Meanwhile,by continuously perfecting the teaching contents and methods,students' satisfaction with this course has been improved,and they pay more attention and give higher appraisement to this course.

Objective:To explore the influencing factors on patients' health seeking behavior in rural China by employing the theory of planned action.Methods:Data from cross-sectional household-based health survey carried out in 2008 were used in the study.Correlations between outcomes and explanatory variables were studied by Logistic regression.Results:The studying population included 19 389 adult patients over the age of 15.Illness awareness,medical experience and structural restriction factors had strong effect on whether the patients chose medical service.Pepople in different socioeconomical status suffered different influences.Conclusion:Responding to the changing trend of health service demand among rural residents,we should recognize the differentiation and allocate the healthcare resources more rationally.

Objective To study the effects of directional inducement of factors produced by injured sciatic nerve on the regenerating axons of adult frog in vivo. Methods Conditioned medium with fraction of 30kD to 100kD was obtained from sciatic nerve of adult frog and pumped out and formed a gradient of concentration toward the end of central nerve stump of cutaneous pectoris nerve with different distances and angles by miniosmotic pumps.After 28\|35 days,the chest tissue was dissected and stained with immunocytochemistry to show the regenerated motor\|axons and the directional value is analyzed. Results The regenerated motor axons grew obviously towards the tip of the cannula with high concentration of CM.The directional value is 0\^84 whereas the value is 0\^04 with random direction.The average directional value between the two groups is significant and is not influenced by the distances and angles of the cannula to the nerve stump. Conclusion Damaged peripheral nerve can produce diffusible active factors with molecular weight between 30kD to 100kD,which induce the directional outgrowth of regenerating motor axons from sectioned nerve stump of adult frogs in vivo. [

Gastrin is mainly secreted by the G cells in antrum and the upper part of small intestine.Gastrin receptor distributes in various tissues.Gastrin and its receptor have several functions including regulating cell growth and differentiation,inhibiting apoptosis,promoting cell proliferation,invasion and metastasis.Studies have shown that gastrin and its receptor involve with various cancers occurrence and development.Gastrin and its receptor can be used to diagnosis early gastric cancer,and be used as a potential targets in gastric carcinoma treatment.The relationship of gastrin and its receptor with gastric carcinoma were reviewed in this paper.

Objective:The study was aimed to inverstigate the effects of different levels of pressure and dura-tion of carbon dioxide and saline in the neck of rabbits on metabolic, hemodynamic, serum sodium concentrations and hematocrit changes. Method:Twenty-one New Zealand rabbits were randomly divided into 7 groups according to the following pressure of CO_2 or saline:0 kPa, 0. 67 kPa CO_2, 1.33 kPa CO_2,2.00 kPa CO_2 , 0.67 kPa saline, 1.33 kPa saline, and 2.00 kPa saline. In order to make a space for the endoscopic thyroidectomy, we filled the neck of rabbits with carbon dioxide and saline . Arterial partial pressure of CO_2(PaCO_2), pH, heart rate (HR), mean arterial pressure (MAP) , central venous pressure (CVP), serum sodium concentration and hematocrit were measured at baseline, 45 min and 90 min after filling with gas or saline and 30 tnin post-filling. Result:Insufflation of CO_2 at 0.67 kPa did not have any significant effect on the parameters. PaCO_2 increased significantly 45 min and 90 min after insufflation of 1.33 kPa CO_2(P<0.01). Marked changes in PaCO_2, pH and CVP occurred 45 min and 90 min after insufflation of 2.00 kPa CO_2 (P<0.01), and the parameters did not return to baseline in 30min after desufflation(P<0.05). In animals receiving saline irrigation no significant changes occurred in PaCO_2, pH and serum sodium concentrations at any time point. There was a tendency of decrease in HCT, but no statistically significant changes were found (P>0.05). CVP increased significantly 90min after saline irrigation at 1.33 kPa(P <0.05). A significant increase in CVP occurred 45 min and 90 min after saline irrigation at 2.00 kPa(P<0.05). No significant changes in HR and MAP occurred in all animals. Conclusion: Filling with saline which does not cause hypercapnia, acidosis or dilutional hyponatremia can be used in endoscopic neck surgery to create and maintain a working space.

Objective To establish a rat model of blood ocular barrier breakdown induced by anterior segment intraocular analogic surgery. Methods One hundred and fifty healthy adult male rats were randomly divided into control group and model group,75 rats in each group.The rats were anesthetized with 1 ml/kg ketamine hydrochloride/xylazine hydrochloride solution.Three way pipes were attached to a phosphate buffer infusion bag and two intravenous catheters. One catheter was inserted 30° obliquelythrough the transparent cornea anterior to the limbus into the rat's anterior chamber.Then the needle was withdrawn and the sheath was indwelling.Another catheter was connected with a manometer.Intraocular pressure was varied from 0 to 12 mm Hg (1 mm Hg=0.133 kPa) 60 times,30 times per min.The catheter was removed.The eyes were treated with ofloxacin ophthalmic solution after surgery.The 1st,2nd,3rd,5th and 7th day after surgery,the integrity of the blood ocular barrier was assessed by immunohistochemical staining for albumin and quantitative measurement using Evan's blue as a tracer. Results Albumin immunohistochemical staining of the control group was confined to the iris and retinal blood vessels.The choroid was stained at each time point after surgery.Albumin immunohistochemical staining of the model group was abundant around the iris and the retinal vasculature on the 1st day after surgery.The albumin diffused throughout the iris and the retina on the 2nd and the 3rd day after surgery.The albumin reached the retinal vessels on the 5th and 7th day after surgery.The aqueous humor Evans blue leakages of the model group were higher than those of the control group on the 1st,2nd,3rd and 5th day after surgery.The differences were statistically significant (t=25.781,37.433,25.150,19.171; P＜0.01).The Evans blue leakage of the model group was close to that of the control group on the 7th day after surgery. The difference was no statistical significant(t=1.303,P=0.209).The retinal Evans blue leakages of the model group were higher than those of the control group on the 1st,the 2nd and the 3rd day after surgery.The differences were statistically significant (t=11.997,14.622,23.014; P＜0.01).The Evans blue leakage of the model group was close to those of the control group on the 5th and 7th day after surgery. The differences were not statistically significant(t=2.027,0.756 ； P=0.058,0.459).Conclusion This study establishes a rat model of blood ocular barrier breakdown induced by imitating the injury to the anterior segment during intraocular surgery.