Objective To observe the development of Schistosoma japonicum in Oncomelania hupensis. MethodsOncomelania snails were infected heavily with miracidia of S.japonicum and the snails were dissected in different time. The mothersporocysts, daughtersporocysts and cercariae were collected, fixed with Bouin's fluid, dyed with carminic stain, enveloped with neutral gum and examined. ResultsThe neural rings were found in 1-24 hours old mothersporocysts and disappeared in 2 days. In the mothersporocysts, germinal cells increased and developed to germ balls. One germ ball developed to one daughtersporocyst. In daughtersporocysts, there were germ balls of different development stages and at last they developed into cercariae. ConclusionThe development process from the miracidium to mothersporocyst, to daughtersporocyst, to cercaria is observed.

Objective To analyze the epidemiological characteristics of malaria in Nanjing City,so as to provide the evi?dence for further formulating and adjusting the malaria prevention and control strategy. Methods The data of malaria situation, malaria cases and epidemiological investigations were collected from the Internet Reporting System in Nanjing City from 2010 to 2015 and analyzed statistically. Results A total of 137 confirmed malaria cases were reported in Nanjing City from 2010 to 2015,including 102 falciparum malaria cases(74.45%),33 vivax malaria cases(24.09%),one ovale malaria case(0.73%) and one quartan malaria case(0.73%). Among the 137 malaria cases,126 cases(91.97%)were imported from foreign coun?tries,2 cases(1.46%)were infected locally,and nine cases(6.57%)were imported from other provinces in China. Among the 126 overseas imported cases,117 cases were imported from African countries and 9 from Asian countries. These malaria cases were majorly young men working as migrant workers,laborers and technical persons. About 19.30%of the cases went to hospital on onset day,and 55.65%were confirmed by medical institutions as malaria in the same day. The majority of diagnosis institu?tions were municipal hospitals(74.45%). Conclusions The number of malaria cases in Nanjing City is declining year by year. The local infections are eliminating gradually. However,the situation of imported malaria from overseas is still serious. There?fore,the surveillance work and health education still should be strengthened,so as to reduce the risk of imported malaria.

Energy expenditure of five young adults worked in the hot desert environment were measured by the methods of indirect calorimetry in the Wuwei Gansou in July 1989.The results indicated that the basal metabolism rate, the resting metabolism rate and the energy cost of young adults marching in the desert and Gobi (15kg load, at rate of 3.5km/h) were 2.782,3.059,14. 188, 10.305 kJ? m-2?min-1 respectively. It was shown that under the similar conditions energy expenditure marching in the desert was 38% more than in the Gobi.Ambient temperature had a greater effect on energy expenditure but the effect was various at different activities. When at 24.5-38.4℃ during marchi-ng(15kg load),1℃increase in ambient temperature was associated with anincrease of about 0.86% energy consumption. While at 25-33℃ during quiet rest the energy consumption tended to decrease with an increase of ambient temperature. But at 33-40℃ it increased with ambient temperature again. It is suggested that the energy metabolism may be more easily influenced by ambient temperature when the metabolic heat production of human body is increased.The present study recommended the estimation of energy requirement for the adult with a moderate activity in hot desert environment should be approximate 15.062MJ/d

Objective To examine the tegmental structure of Schistosoma nanjingi using scanning electron microscopy. Methods Adult schistosomes were obtained from infected rabbits with cercariae shedding from Oncomelania snails, which were infected with miracidia of Schistosoma nanjingi. The adult schistosomes were fixed with 4% glutaradehyde, and then, the samples were prepared with the conventional procedures and the schistosomes were examined with a scanning electron microscope (SX-40). Results There were two types of male and female adult worms. For the big male worm, there were big spines and deep cavity on the surface of middle back and some small spines on the surface of middle abdomen; for the small male worm, there were many small spines on the surface of whole back and abdomen. As the big female worm, there were some small spines on the whole tegumental surface. As the small female worm, there were some small spines on the surface of back and abdomen, but the shape of spines was different between the spines of back and abdomen. On the tail surface of the small female worm, there were two types of spines. The spoke-like acetabulum was found. The sensory organelle papillae with or without cilia were found on the tegmental surface of both male and female woems. Conclusion The tegmental structure of Schistosoma nanjingi is much different from that of Schistosoma japonicum.

Objective To establish an automatic microscope scanning system based on the oil-lens for replacing the traditional manual microscopy reading of blood films to improve the efficiency and the detection rate of Plasmodium.Methods The system consisted of an optical microscope,digital camera,control software and general computer-based component.The system and professional persons read the blood films with single-blind method,everyone read 10 blood samples(100 fields of vision per blood film),and the time and results of reading were recorded.Results The system had the function of automatic displacement and focus,automatic scanning and storage,automatic back-bit and reset,annotation,and automatic counting,reporting and printing.The system can increased the speed of reading films by 30.58%,and improved the accuracy by 13.33%.Conclusion The automatic microscope scanning system can improve the speed and accuracy of reading films and the operation is simple.

Objective To study the mini-invasive surgical treatment for cholelithiasis disease in the primary hospital. Methods Laparoseope,duodenoscope and choledochoscope were combined to treat 293 cases with cholelith-iasis which included 2 cases cholecystolithisasis, 131 cases were cholecystolithiasis with secondary choledocholith,28 cases with primary choledocholith,39 cases with calculus of intrahepatic duct,93 cases with calculus of intrahepatic or extrahepatic duct. Results The program had minor trauma, mild suffering, and less operative complications,compared with traditional open operations. Conclusion The combined treatment of laparoscopy, duodenoscopy, choledochoscope and surgery for the cholelithiasis in the primary hospital is feasible, safe and effective.

Objective To investigate the effect and mechanism of total flavonoid glycosides from Fructus Aurantii Immaturus (Immature Bitter Orange,Zhishi)on visceral hypersensitivity in rats with functional dyspepsia (FD).Methods Forty ten-day-old male SD rats were randomly divided into five groups:nor-mal group,model group,total flavonoid glycosides of Zhishi(TFGZ)high-dose group,mid-dose group and low-dose group (each n =8).FD model rats were induced by intragatrical administration of iodoacet-amide with tail-clamping stress.When the rats were 8 weeks old,they were intragstrically administered corresponding dosage of TFGZ for consecutive 14 days.Then abdominal withdrawal reflex (AWR)score, electromyographic (EMG)activity of Musculus trapezius cervicalis and gastric accommodation during gas-tric balloon distention were recorded.The optimal dose of TFGZ was screened for the next study.Fifteen more ten-day-old male SD rats were randomly divided into three groups—normal group,model group and TFGZ group at optimal dosage.The method of modeling and treatment were as same as before.After treatment,the expression of 5-HT in gastric and spinal cord tissue and c-fos mRNA in spinal cord tissue were measured.Results Under the intragastric balloon pressure of 40,50 and 60 mmHg,AWR score and change rate of root-mean-square (RMS)of EMG of rats in TFGZ high-dose group and mid-dose group were significantly lower than those of model group (P <0.05),while gastric accommodation was higher than that of model group (P <0.05).While there was no significant difference between the mid-dose group and high-dose group (P >0.05),so middle dose was confirmed to be optimal.TFGZ middle dose significantly decreased 5-HT and c-fos mRNA expression of rats with FD (P <0.05),and there was no significant difference with those in normal group (P >0.05).Conclusion Total flavonoid glycosides from Zhishi could effectively reduce the visceral hypersensitivity in rats with functional dyspepsia.Its mechanism may through the way of lowering the level of 5-HT and c-fos in gastric and spinal cord tissue.

Objective To explore the evolvement rule of TCM syndrome types of the transformation of chronic gastritis (CG):from chronic non-atrophic gastritis (CNAG),chronic atrophic gastritis (CAG) to precancerous lesions of gastric carcinoma (PLGC).Methods Based on gastroscopy and gastrobiop-sy,altogether 592 patients included from three hospitals affiliated to Beijing University of Chinese Medi-cine Dongzhimen Hospital,(Dongfang Hospital and Third affiliated Hospital)and Wangjing hospital of China Academy of Chinese Medical Sciences from September 2013 to February 2014,were diagnosed with CNAG (338 cases),CAG (134 cases)and PLGC (120 cases).By using Epidata 3.1 the database was established,then principal component analysis,factor analysis and Chi-square test were conducted by using software SPSS 17.0.Results There were nine common syndrome types in CNAG,and the three leading ones were syndrome of incoordination between spleen and stomach,syndrome of heat-stag-nation in liver and stomach,syndrome of incoordination between liver and stomach.There were ten syn-drome types in CAG,and the highest frequency was syndrome of incoordination between liver and stom-ach,then syndrome of static blood in stomach collaterals and syndrome of deficient cold of spleen and stomach.The highest frequency of three syndrome of ten in PLGC were syndrome of yin deficiency in stomach,syndrome of yang deficiency in stomach and syndrome of static blood in stomach collaterals. The frequencies of location factors of CNAG from high to low were stomach,liver and spleen,the same as those of CAG;the frequencies of nature factors from high to low were qi stagnation,heat,qi deficiency, dampness and yang deficiency,which were some different from those of CAG being qi stagnation,heat, yang deficiency,dampness,blood stasis,yin deficiency and qi deficiency.With the disease progression, the frequencies of location factors of PLGC from high to low were stomach,spleen and liver,while those of nature factors were heat,yang deficiency,yin deficiency,qi stagnation,blood stasis,dampness,and qi deficiency.The distributions of location factors as well as nature factors were significantly different dur-ing the whole procedure of CG progression,CNAG,CAG and finally PLGC.Conclusion During the procedure of:CNAG turned into CAG and into PLGC in the end,the evolvement characteristic of “sthe-nia transforming into asthenia and appearing yin deficiency and blood stasis gradually”was found.