1.Comparison of Dynamics in Viremia Levels in Chickens Inoculated with Marek's Disease Virus Strains of Different Pathotypes
Virologica Sinica 2001;16(1):59-63
One-day-old unvaccinated chicks were inoculated with serotype I virulent strain GA and vaccine strain CVI988, serotype III vaccine strain HVT o f Marek's disease viruses(MDV). By using an indirect immunofluorescence assay of suspensions of peripheral blood mononuclear cells(PBMC) with monoclonal antibo dies(MAb) BA4 and BD8 specific to glycoprotein B of MDV, The dynamic course s of vir emia levels for each of 3 strains from 4 days to 45 days postinfection (PI) were determind. Viremia for virulent strain GA-infected chickens were detected from 4 days PI until days before death of infected chickens, it got its peak at abou t 14 days PI. Viremia in serotype 1 vaccine CVI988-inoculated chickens were mea sured between 4 to 22 days PI, it could be detected from 4 days PI and ended at 18 days PI, it got its peak at 8 days PI. For serotype 3 vaccine HVT-inoculated chickens, viremia could be detected beween 4 to 14 days PI, its peak happened a t about 6 days PI. Such IFA with MAbs BA4 and BD8 could be used to evaluate qu al ity of vaccination process in chicken flocks. The differential dynamic courses o f viremia for different strains may be used to diagnose virulent MDV infection i n vaccinated flocks. The viremia levels measured by IFA with the MAbs and co-cu ltivation assay for plague forming unit(PFU) were compared. The results indicate d that IFA assay of PBMC suspension was more sensitive and specific than co-cu ltivation assay, i.e. viremia levels measured by IFA were 30 to 100-fold higher than that by plague-forming assay in CEF for the same sample.
2.The research on the effect of different doses of Zoledronic acid on bone resorption
Xiaoshun HUANG ; Chuanfang LIU ; Wenjiang HE ; Zuxin ZHONG ; Zhi ZHONG
Chinese Journal of Biochemical Pharmaceutics 2017;37(6):264-267
Objective To evaluate the effect of single injection of low dose zoledronic acid on bone resorption.Methods332 menopausal patients with bone deficiency treated in our hospital were selected.The patients were treated with zoledronic acid 1mg (1mg group), 2.5mg treatment group (2.5mg group), 5mg treatment group (5 mg group) and placebo treatment group (control group), each group of 83 patients.The patients of 1mg group, 2.5mg group and 5 mg group were treated with 1mg, 2.5mg and 5mg zoledronic acid alone.The patients in the control group were given intravenous infusion of placebo.Evaluated the lumbar spine (L1-L4) and total hip bone mineral density (BMD) and bone metabolic markers at baseline, 6, 12, 18, and 24 months in the four groups.The bone metabolic criteria included t β-Cterminal-telopeptide of type I collagen (β-CTX) and procollagen type-I N-terminal propeptide (P1NP).ResultsThe Lumbar spine BMD and the Total hip BMD were significantly higher in 1mg group than baseline value and Simultaneous valueand in the control group (P<0.05), The difference were statistically significant (all P<0.05).The values at 8 and 24 months decreased gradually.The value was significantly lower (P<0.05) compared with the control group, There were no statistically significant difference compared with the simultaneous value in control group.The lumbar BMD and the total hip BMD in 2.5mg and 5mg groups were significantly lower than the baseline values during the whole trial period (all P<0.05).The trend of β-CTX and P1NP was similar to that of BMD in each group.ConclusionIntravenous injection of 1 mg and 2.5 mg of zoledronic acid produces anti-bone resorption that can last for at least 1 year.After one year of treatment, The effect of single injection of 2.5 mg of zoledronic acid on bone is similar to that of single injection of 5 mg zoledronic acid.1 mg zoledronic acid produced by anti-bone resorption can last for 12 months, and then slowly disappear.
4.Updated relationship between testosterone and prostate cancer.
Zhong-Quan SUN ; Zhi-Yuan SHEN
National Journal of Andrology 2014;20(8):675-678
Androgen deprivation therapy can effectively suppress the progression of prostate cancer, but accumulating evidence for the relationship of testosterone with prostate cancer challenges the conventional wisdom. High levels of testosterone are not risk factors for prostate cancer, nor promote its development. On the contrary, a low testosterone level indicates a worse pathological stage. So far there has been no strong evidence to prove the role of testosterone in the occurrence and progression of prostate cancer. Therefore, the relationship between testosterone and prostate cancer is quite complicated and deserves further investigation.
Humans
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Male
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Prostatic Neoplasms
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Testosterone
5.Application of double-cavity balloon urinary catheter in the treatment of epistaxis
Zhi LIU ; Runa WANG ; Limei ZHONG
Chinese Journal of Primary Medicine and Pharmacy 2012;19(6):867-868
ObjectiveTo explore the applied methods and the effect of double-cavity balloon urinary catheter in the treatment of epistaxis.MethodsClinical data of 96 epistaxis patients who were operated with postnasal packing applied double-cavity balloon urinary catheter at our unit were analyzed retrospectively.ResultsAll patients ( 100% ) were successfully healed.One patient suffered from anterior nostril stenosis because of the constriction by urinary catheter.The rest was no significant complications.ConclusionPostnasal packingl applied double-cavity balloon urinary catheter had a safe and effective method for treatment of severe epistaxis.Attention to detail in the operation could prevent the occurrence of complications.
6.Changes in expression of synaptic proteins in brains of patients with Alzheimer's disease.
Ying CAO ; Rivka RAVID ; Zhi-zhong GUAN
Chinese Journal of Pathology 2009;38(12):833-834
Aged
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Aged, 80 and over
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Alzheimer Disease
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metabolism
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pathology
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Brain
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metabolism
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Dentate Gyrus
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metabolism
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Dynamin I
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metabolism
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Hippocampus
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metabolism
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Humans
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Monomeric Clathrin Assembly Proteins
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metabolism
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Neuropil
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metabolism
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Synaptophysin
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metabolism
9.Analysis of early warning indicators of tuberculous peritonitis in patients with cirrhotic ascites
Huaping ZHONG ; Zhi ZHOU ; Guilan LIAO
Journal of Clinical Hepatology 2014;31(4):357-359
Objective To analyze the early warning indicators of tuberculous peritonitis (TBP)in patients with cirrhotic ascites.Methods A retrospective analysis was performed on the clinical data of 62 patients with cirrhotic ascites hospitalized in the Second Affiliated Hospital of Chongqing Medical University from January 2010 to December 2012.The chi-square test and Mann-Whitney U test were used for uni-variate analysis,while the logistic regression model was used for multivariate analysis.Results There were significant differences between TBP group and non-TBP group in sex,history of primary peritonitis,erythrocyte sedimentation rate (ESR),serum tuberculosis antibody, percentage of lymphocytes in ascites (≥50%),and prothrombin activity (PTA)(P<0.05 for all).The odds ratios (ORs)of history of primary peritonitis,PTA,ESR,and percentage of lymphocytes in ascites (≥50%)for development of TBP in patients with cirrhotic ascites were 1.933,3.205,2.716,and 11.701,respectively (P<0.05 for all),and the areas under the receiver operating characteristic curve were 0.831,0.815,0.775,and 0.935,respectively (P<0.05 for all).Conclusion History of primary peritonitis,PTA,ESR,and per-centage of lymphocytes in ascites (≥50%)are the early warning indicators of TBP in patients with cirrhotic ascites;these early warning in-dicators,especially percentage of lymphocytes in ascites (≥50%),have good predictive values.
10.PRODUCTION OF CELLULASE BY PENICILLIUM SP. NXP25 AND ITS PROPERTIES
Microbiology 1992;0(01):-
Cellulase was produced by growing Penicillium sp. NXP25 in liquid medium consisted of 5% com cob powder, 3% wheat bran, 0.35% nitrogen source No 10 and 0.3% calcium chloride. The optimum culture conditions were initial pH 5.0, 10% mycelial inoculum, temperature 29℃, shaking speed 280r/min and cultivation time 72h. When determining enzyme activity at 50℃, endo-1, 4-?-glucanase activity, extro-1, 4-?-glucanase activity, ?-glucosidase activity and filter paper enzyme activity of the supernatant of the culture were 841u/mL, 13u/mL, 24u/mL and 46u/mL, respectively. The optimum pH and temperature for the action of the above enzymes were pH 4.8 and60℃, pH5.0 and 50℃, pH 4.5 and 70℃, pH 5.0 and 55℃, respectively. Stable pH range of the above enzymes were 3.0-7.0, 4.0~6.0, 4.0~7.0 and 4.0~6.0, respectively. After incubating the enzyme complex at 65C for 30min, 24% of endo-1, 4-?-glucanase activity, 7% of extro-1, 4-?-glucanase activity, 89%of ?-glucosidase activity and 8% of filter paper enzyme activity were remained, respctively.