2.Apoptosis in cardiac ailograft and its relation with acute rejection in rats
Hongxing ZHONG ; Hui HAN ; Yongshang ZHANG
Chinese Journal of Organ Transplantation 2000;21(3):153-155
Objectives To detemline whether apoptotic cell death is involved in rat cardiac allograft rejection and investigate the relevance of apoptosis with acute rejection and its implication.Methods Groups of Wistar rats underwent heterotopic heart transplantation from allogeneic SD or syngeneic Wistar rats.The cardiac grafts were harvested at 1,3,5,or 7 days after transplantation and underwent the detection of apoptotic cell death using in situ terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling(TUNEL).Histopathological rejeclion grade and apoptotic index(AI)were analyzed.Results The incidence of apoptotic cells was increased steadily over time in allografts,in contrast to syngeneic grafts.The apoptotic cells in allografts were mainly cardiac myocytes and few infiltrating lymphocytes.The AI of rejection grade 1,2,3 and 4 was significantly higher than that of rejection grade 0(P<0.01).Conclusions TUNEL can display apoptosis of single cell in situ.Apoptosis is an important mechanism of tissue injury in acute cardiac allograft rejection in rats.Myocyte apoptosis can be used as a valuable index to estimate the injury of grafts and monitor acute rejection.
3.Modulatoin of Macrophage-Mediated Cytotoxic Activity Thibitory Effect of a Mycotoxin, Fusarin C, on Macrophage Activation in Mice
Zhong-Yun DONG ; You-Hui ZHANG ;
Chinese Journal of Immunology 1985;0(06):-
The effect of Fusarin C, a new mutagen extracted from Fusarium moniliforme,on murine peritoneal M? activation by measuring M?-mediated MTC ADCC and CS,Fusarin C could inhibit M? activation by both MAF and FDP. The inhibitory effect was dose-and time-dependent and the curves of dose-and time-response were similar in all three assays. There is, however, apparent difference in Fusarin C dose and time needed to induce significant in hibition among these assays. Significant inhibition occured at 0.4?g/ml and 0.5?g/ml for MTC and CS respectively, but 1.6?g/ml for ADCC. Similarly, the minimal period of time necessary to bring about significant inhibition was 2 hr for MTC, but 3 hr for ADCC. Finally, significance of the inhibitory effect of Fusarin C on M? anti-tumor activity in relation to carcinogenesis was discussed.
4.Modulation of macrophage-mediated cytotoxic activity Ⅱ.The Inhibitory effect of fusarin C on macrophage activation is reversible
Zhong-Yun DONG ; You-Hui ZHANG ;
Chinese Journal of Immunology 1985;0(01):-
The inhibitory effect of Fusarin C,a new mutagen isolated from Fusarium moniliforme,on M? activation was investigated.The inhibitory effect of Fusarin C disappeared partially after 24 hr culture in the absence of the mycotoxin and completely after 72 hr.In addition,it could be overcome by high concentrations of M? activating factor or anti-serum to the target cells.
5.Effect of Cyclosporin A to T Lymphocyte Subsets and Toxoplasmosis After Heart Allotransplantation in Rat
Hui HAN ; Hongxing ZHONG ; Yongshang ZHANG ;
Chinese Journal of Parasitology and Parasitic Diseases 1997;0(05):-
Objective To evaluate the effect of Toxoplasma gondii infection on immune function of the rat recipients and onset of Toxoplasmosis after heart transplantation and its correlation with the use of Cyclosporin A(CsA). Methods ELISA was used to detect recipient's specific circulating antigen (CAg) and antibodies (IgG, IgM) after the transplantation. T lymphocyte subsets in peripheral blood were examined by using immunofluorescence stain and flow cytometry (FCM) before and after heart allograft 5,10,15,20 days in rats. Results The use of CsA increased the risk of infection by T. gondii and accelerated the increase of CD8 + T lymphocyte after the transplantation. The incidence of donor acquired T.gondii infection was higher than that of reactivated silent infection in recipients before operation. The percentage of CD8 + T lymphocyte was evidently elevated due to the onset of toxoplasmosis and the ratio CD4 +/CD8 + was reduced or inverted in the meanwhile. Conclusion The immune suppression after use of CsA was the main reason leading to an activation of the silent infection of T.gondii . CD8 + was the main cytotoxic cell elevated during the infection.
7.Experimental study on preparation and targeting ability in vitro of HCC-targeted lipid microbubble containing 10-HCPT
Jie LUO ; Zhigang WANG ; Qunxia ZHANG ; Shigen ZHONG ; Hui ZHANG
Chinese Journal of Medical Imaging Technology 2010;26(3):418-420
Objective To prepare HCC-targeted lipid ultrasound microbubble containing 10-hydroxycamptothecin (10-HCPT), and to assess its targeting function in vitro. Methods After the biotinylated monoclonal antibody Hab18 was prepared, the biotinylated degree was determined. Microbubbles containing 10-HCPT were prepared by mechanical vibration. Then the biotinylated antibody was attached to the surface of the microbubbles by avidin-biotin interaction. The physical property, entrapment efficiency and the drug-loading amounts of 10-HCPT lipid microbubbles were determined. The combination of biotinylated Hab18 with microbubbles containing 10-HCPT was proved by immunofluorescent assay, and the targeting function of the targeted microbubbles containing 10-HCPT was observed with light microscope, served non-targeted microbubbles as control group. Results About 13 biotin molecules were coupled to each antibody in average. The disposition of the prepared microbubbles was steady and the mean diameter was 1.52 μm. The drug entrapment efficiency was 76.32% and the drug-loading amounts was 21.81%. Red fluorescence was observed at the edge of the microbubbles in immunofluorescent assay, and the conjugation of the targeted microbubbles containing 10-HCPT with 7721 cells was tight while control group was negative. Conclusion HCC-targeted lipid ultrasound microbubbles containing 10-HPTC can be prepared successfully, with higher entrapment efficiency and drug-loading amounts and strong targeting function in vitro.
8.Clinical characteristics and risk factors of alcoholic liver disease combined with type 2 diabetes mellitus
Yuanyuan TAO ; Hui CHEN ; Xianglian ZHANG ; Jie JING ; Xiaodan ZHONG
Chinese Journal of Primary Medicine and Pharmacy 2021;28(4):523-527
Objective:To investigate the clinical characteristics and risk factors of alcoholic liver disease (ALD) combined with type 2 diabetes mellitus (T2DM).Methods:The clinical data of 70 patients with ALD combined with T2DM (ALD + T2DM group) who received treatment from March 2015 to March 2020 in the First Affiliated Hospital of Guangxi Medical University were retrospectively analyzed. The clinical data of 69 patients with ALD (ALD group) and 69 patients with T2DM (T2DM group) who concurrently received treatment were also analyzed. Sex, age, body mass index, drinking habits and other basic information in the three groups were collected. The risk factors of ALD combined with T2DM were evaluated by logistic regression analysis.Results:The daily alcohol intake and years of drinking in the ALD + T2DM group were (110.97 ± 79.78) g/d and (25.17 ± 10.05) years, respectively, which were significantly higher than (91.48 ± 64.26) g/d and (21.78 ± 8.91) years respectively in the ALD group ( t = 1.699, 2.102, both P < 0.05). The incidence of metabolic syndrome in the ALD + T2DM group was 34.3% (24/70), which was significantly higher than 15.9% (11/69) in the ALD group ( χ2 = 6.210, P < 0.05). The activity ratio of aspartate aminotransferase/alanine aminotransferase, total bilirubin level, gamma glutamyl transpeptidase activity in the ALD + T2DM group were 1.59 ± 0.93, (64.73 ± 39.90) μmol/L, (522.93 ± 353.66) U/L, respectively, which were significantly higher than (1.04 ± 0.53), (10.37 ± 4.51) μmol/L, (35.73 ± 23.99) U/L, respectively in the T2DM group ( t = 4.280, 3.780, 5.045, all P < 0.05). Triacylglycerol level in the ALD + T2DM group was significantly higher than that in the ALD group [(1.69 ± 1.04) mmol/L vs. (1.28 ± 0.87) mmol/L, t = 2.523, P < 0.05). Prothrombin time and lactate dehydrogenase activity in the ALD + T2DM group were (13.13 ± 2.79) s and (226.17 ± 79.93) U/L, respectively, which were significantly higher than (10.41 ± 0.84) s, (172.63 ± 39.34) U/L, respectively in the T2DM group ( t = 7.715, 4.969, both P < 0.05). Multivariate Logistic regression analysis showed that prothrombin time, triacylglycerol level, years of drinking, gamma glutamyl transpeptidase activity, and amount of drinking were the main risk factors for ALD combined with T2DM ( OR = 2.010, 3.270, 1.230, 1.060, 1.006, all P < 0.05). Conclusion:Patients with ALD combined with T2DM are prone to metabolic syndrome and lipid disorders, which may aggravate the disease. Prothrombin time, triacylglycerol level, years of drinking play an important role in the development of ALD combined with T2DM.
9.Prophylactic effect of budesonide on the expression of IL-4, IL-5 in model of allergic rhinitis rats.
Xiaoyan GUO ; Manying GENG ; Zhong LI ; Hui ZHANG ; Xiufen WEI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2014;28(14):1057-1060
OBJECTIVE:
To explore the prophylactic effect of Budesonide on the expression of IL-4,IL-5 in nasal mucosa in model of minimal persistent inflammation of allergic rhinitis in rats.
METHOD:
Eighty SD rats were randomly divided into allergic rhinitis group (A group), experimental (B group), control group (C group) and negative control group (D group). A group was made for model of allergic rhinitis. B and C group were made for model of the lightest persistent inflammatory response. After the models were established, half of rats in the A group, B group, C group and D group were executed, and EOS infiltration and the expression of IL-4, IL-5, ICAM-1 were observed in nasal mucosa. The remaining rats of B group were given budesonide (64 microg/side/time, twice/day) treatment for 2 weeks. A, C, D group were given nasal spray with normal saline for 2 weeks. After that A, B, and C groups were stimulated with 1% OVA daily for one week, D group were given nasal spray with normal saline. All rats were executed after excitation, EOS infiltration and IL-4, IL-5 expression were observed.
RESULT:
After the drug treatment, B group only had a small amount of mucous EOS infiltration and had no significant difference with D group, but in A and C group EOS had heavy infiltration. Gray value of the IL-4 positive areas in B group were significantly different compared with A and C group (P < 0.05), A group and C group had no significant difference (P > 0.05). Distribution of IL-5 positive signals was similar with that of IL-4.
CONCLUSION
Budesonide MPI application could significantly inhibit the allergic.
Animals
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Budesonide
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therapeutic use
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Disease Models, Animal
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Female
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Interleukin-4
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metabolism
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Interleukin-5
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metabolism
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Male
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Rats
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Rats, Sprague-Dawley
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Rhinitis, Allergic
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metabolism
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prevention & control
10.Sequence analysis on mt COXI fragment of Taenia cestodes from 6 regions of Yunnan province
Hui ZHANG ; Shungao MA ; Guoliang ZHONG ; Yimei YANG
Chinese Journal of Zoonoses 2009;(12):1199-1201
To identify Taenia cestodes from 6 regions of Yunnan province by PCR and sequencing of mtCOXⅠfragment. the genomic DNA of Taenia cestodes was extracted from proglottid collected in 6 region of Yunnan province, and mtCOXⅠ gene fragments were amplified by PCR, and then sequenced. The genomic distance and phylogenetic tree were constructed in comparison with other known mtCOXⅠgene sequences of T.solium , T.saginata and T. asiatica in GenBank using DNA MAN software. Through distance matrix,it was found that the homologie of NJ4, NJ1 and DQ2 was 99.8%, DL4 and NJ3 homologie was 99.5%, NJ2 and DQ3 homologie was 98.8%; the homologie of DL3 and BZ3 was 98.3%, while the homologie was 96.0% with BZ2; The phylogenetic tree demonstrated that 10 Taenia cestodes including NJ1-4, DL2-3and DQ1-3 occupied one brance with BZ3. BN1, CX1, LC1 and BZ2 occupied one brance, then two brance occupied and occupied with other one which was occupied by DL1 and BZ1. Taenia cestodes from Nujiang and Diqing were T. asiatica. Taenia cestodes from XiShangbanna,Lincang and Chuxiong were T.saginata.Taenia cestodes from Dali were T.solium or T.asiatica.Because same species have no difference from different regions. mtCOXⅠfragment sequencing is valid for tapeworms identification.