2.Identification of the Kiwifruit Germplasms in Jiangxi Province by AFLP and Its Classification Significance
Hua CHEN ; Ganjun YI ; Xiaobiao XU
Chinese Journal of Biochemistry and Molecular Biology 2007;23(2):122-129
The kiwifruit germplasms in Jiangxi province were identified by amplified fragment length polymorphism(AFLP)markers.Four primer pairs that had been selected from 64 ones had detected a total of 190 bands among 31 germplasms of kiwifruit,one hundred and seventy nine bands that representing 94.2%of total bands were polymorphic.The identification rates of 31 germplasms were up to 100%.The result suggests that applying AFLP markers to analyze the kiwifruit germplasms is feasible.Then Clustering analysis the AFLP resuit by UPGMA.The dendrogram indicated that the Dice similarity coefficients of 31 germplasms of kiwifruit ranged from 0.50 to 0.85,it suggested that their genetic relationships weren't near.Thirty one germplasms could divide into four groups according to the Dice similarity coefficient 0.56.Sect.Leiocarpae and Sect.Maculatae clustered into one group;A.Melliana of Sect.Strigosae was one group;A.Chinensis var. Rufopulpa,A.Eriantha,A.Fulvicoma var.Lenata,A.Styracifolia and A.Jiangxiensis in Sect.Stellatae clustered into the same group;but the two germplasms of Sect.Stellatae,A.Deliciosa and A.Chinensis clustered into the other group.Interestingly,the‘Ganmi-5’was in the same rank with A.Chinensis from the dendrogram,but it was the variety of A.Chinensis according to the traditional classification.It is necessary that the‘Ganmi-5’should be further researched in classification.The genetic relationships among the kiwifruit germplasms in Jiangxi province were identified and characterized by themolecular method,which was consistent with the traditional classification in certain degree and provided new evidences for the classification of the kiwifruit germplasms.
3.Pathology and genetics of disease and tumours of the lung, pleura in China.
Chinese Journal of Pathology 2005;34(8):490-493
Epstein-Barr Virus Infections
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Genes, p53
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genetics
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Humans
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Lung Diseases, Interstitial
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pathology
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Lung Neoplasms
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genetics
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pathology
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virology
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Mutation
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Pleural Neoplasms
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genetics
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pathology
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Pulmonary Disease, Chronic Obstructive
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pathology
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Severe Acute Respiratory Syndrome
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pathology
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Tuberculosis, Pulmonary
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pathology
4.The dynamic change of Brn-3a expression in retina of chronic high intraocular pressure rat
Chinese Journal of Experimental Ophthalmology 2011;29(12):1077-1081
Background Brn-3a is a newly discovered specificity marker for retina ganglion cells(RGCs).It is well-known that RGCs damage is a important pathological basis of hypertension-visual disorder.But the study concerning expression of Brn-3a in RGCs in glaucoma eye is still rately.Objective The purpose of this work was to investigate the changes of Brn-3a expression in model eye with chronic high intraocular pressure(IOP) and its relation with morphology of retina and the expression of Brn-3a in chronic ocular hypertension rats.Methods Thirty-five clean adult SD rats were randomly divided into normal control group(5 rats) and model group(30 rats).Experimental chronic ocular hypertension models were induced unilaterally in the left eyes of 30 health adult SD rats by cauterizing super-scleral veins,and the conjunctival incision was made in the right eyes as sham operative group.The operated rats were subdivided into 6 groups according to the examination time points and 6 rats for each group.IOP was measured with Tono-Pen tonometer before and after 30 minutes,1,3,7,14,28 day after surgery respectively.The rat models were sacrificed in 1,3,5,7,14,28 days after operation by excessive anesthesia method,and retinal section was prepared for the histopathological examination and the RGCs were counted using Nissl staining method.Expression of Brn-3a in RGCs was detected by immunohistochemistry.This experimental complied with the Regulations for the Administration of Affair Concerning Experimental Animals by State Science and Technology Commission.Results The IOP was significantly raised from 30 minutes to 28 days after operation in model eyes with the top IOP( 34.46±4.65 )mmHg in the 30 minutes after operation,showing statistically significant differences in various time groups ( F =95.631,P =0.001 ) and different eyes ( F =287.473,P =0.001 ).Compared with sham operative group,the IOP were elevated from 1 day through 14 days after operation ( q =18.418,15.261,10.987,6.931,4.975,2.962,P < 0.05 ).The numbers of RGCs were ( 29.08 ± 1.98 ) in the normal control group and decreased gradually by 3.17%,7.84%,14.60%,22.40% in 1,7,14,28 day after surgery in the model eyes with the considerable differences in comparison with normal eyes ( t =5.943,8.034,15.023,17.004,19.371,P < 0.05 ).Immunochemistry revealed that Brn-3a was specially expressed in the RGCs layer and the positive RGCs for Brn-3a were evidently decreased as the prolong of high IOP duration ( F =127.583,P =0.000 ).Conclusions Chronic glaucoma model can be successfully established using Shareef-Sharma method.The loss of RGCs is associated with the high lOP duration.The expression level of Brn-3a is a reliable index of high-IOP-induced damage of optical nurve.
5.Monte Carlo simulation of dosimetric parameters for the Model 6711 ~(125)I brachytherapy source
Zhengdong HUA ; Dezhong WANG ; Yi LIU ; Zheng ZHAO ; Chen CHEN
Journal of Interventional Radiology 1992;0(01):-
The ?-radioactive seed brachytherapy source has been widely employed in the implantation therapy for the prostatic carcinoma and the ophthalmic lesions.In this study the dosimetric parameters for characterization of a low-energy interstitial brachytherapy source 125I were calculated according to dose calculation formalism recommended by AAPM TG-43U1.For data processing,a 0.28 cm active length was used for the geometry function.The dosimetry parameter air-Kerma strength,dose rate constant,radial dose function and anisotropy function were estimated by means of the EGS5 Monte Carlo code.The results obtained from this study are in good agreement with the corresponding values recommended by TG-43U1 and with the data reported by Dolan,et al.
6.Influence of Brain Hypoxia-Ischemia on Expression of Glucose Transporter 1 Genes and Glucose Transpsorter 3 Genes in Neonatal Rats
zheng, CHEN ; hui-jin, CHEN ; ming-hua, JIANG ; long-hua, QIAN ; guan-yi, CHEN
Journal of Applied Clinical Pediatrics 1986;0(01):-
Objective To understand the mechanism of cerebral energy failure after hypoxia ischemia at the molecular level and to establish the protocol for the safe and effective treatment of hypoxic-ischemic encephalopathy(HIE).Methods One hundred neonatal rats were divided into normal control group and hypoxic-ischemic(HI) group. SD rats of both groups were decapitated at the time of 2 h,24 h,48 h,72 h and 7 d after HI.These tissues of cerebrum,cortex and hippocampus were taken out to explore the influence of HI on the expression of GLUT1 and GLUT3 genes with the method of RT-PCR.Results There was an enhancement in the expression of GLUT1 and GLUT3 genes with the increasing of day age. The expression was more intense in hippocampus than that in cortex. However, HI could significantly enhance the expression of GLUT genes. The expression was higher in cortex than that in hippocampus. The expression of two genes reached the peak at 24 h after HI, but was significantly lower than that in control group at 7 d after HI.Conclusion The increased expression of GLUT genes can maintain the energy supplement for the brain and delay a cascade reaction of cerebral energy failure.
9.THE NUTRITIONAL EVALUATION AND CLINICAL TRIALS OF A TOTAL ENTERAL NUTRIENT PREPARATION
Jiarong TIAN ; Yi LU ; Hua CHEN ; Kuixiu YANG ; Yanxiang ZHONG
Acta Nutrimenta Sinica 1956;0(01):-
The composition, nutritional evaluation and clinical trials of a nutritionally complete enteral preparation were presented. It was composed of glucose oligosaccharides, emulsified fat, solubilized proteins, twelve vitamins, certain minerals and trace elements. Rats were forced to negative nitrogen balance by means of protein-free diet. Body weight and serum total protein declined accordingly. When the feed was changed to this preparation in one group, and a routine one with equal nitrogen content in another, nitrogen balance was turned to positive, body weight increased, serum total protein returned to normal in both groups. The increments of nitrogen balance and body weight were, however, higher significantly in the group fed with the preparation than that with routine diet. The biological value, net protein utilization and protein efficiency ratio of the solubilized proteins in the preparation were higher than casein in the routine feed. Twenty surgical patients having the preparation as the sole source of nutrients could take around 8.37MJ(2000 kcal)a day. Nitrogen balance turned from negative to positive in an average time of 3.6 days. Body weight, serum total protein, serum albumin were all increased. Fourty patients took this as dietary supplement and the similar results were observed too. Clinical effects were excellent in all cases, especially for healing of surgical wounds and fistula. Incidence of diarrhea was 3.3%.
10.Early diagnostic value of MRI for intraductal papilloma of the breast
Baoqin GUO ; Hua LI ; Yi CHEN ; Hao LIU ; Juan FU
Journal of Practical Radiology 2016;32(10):1539-1541,1581
Objective To analyze MRI features of breast intraductal papilloma,to improve the acquaintance of this disease.Methods The preoperative MRI images (T2 WI-SPAIR,DWI,ADC,TIC and MIP)of eight patients with breast intraductal papilloma confirmed by surgery were reviewed retrospectively,which were compared with the postoperative pathology.The morphology,distribution, enhanced methods and signal characteristics of the lesion were summarized.Results Of 8 cases,the lession was dormant,and MRI revealed three patterns:the first type was occult papilloma,which presented distention of ducts and no solid nodule in 3 cases (37.5%);the second type showed tiny nodules in bar-like dilatation of ducts in 3 cases (37.5%);and the third type presented small round nodules scattering distribued in terminal ductules in 2 cases (25%).The maximum diameter of nodular lesions was 0.4-1.0 cm(average 0.7 cm).The lesions on T2 WI-SPAIR showed equal signal intensity or mixed signals with isointensity/hypointensity,and dilatation catheter.enhancement. The ADC and TIC value were various,therefore,diagnosis of the tumor should be combined with morphology and associated symptoms. Conclusion At early stage,the occult focus of breast intraductal papilloma can be sensitively detected and localized on MRI.It reveals that MRI has advantage in showing morphology of lesion and functional imaging,which is of important value in clinical diagnosis and early treatment.