Acupuncture Therapy ; Drugs, Chinese Herbal ; pharmacology ; Female ; Humans ; Ovulation ; drug effects ; Ovulation Induction

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.

Adult ; Humans ; Male ; Mercury ; Mercury Poisoning ; complications ; Stevens-Johnson Syndrome ; pathology

Adult ; Animal Experimentation ; Female ; Hemorrhagic Fever with Renal Syndrome ; etiology ; Humans ; Male ; Medical Laboratory Personnel ; Middle Aged

Administration, Oral ; Adult ; Cresols ; poisoning ; Female ; Humans ; Male ; Middle Aged ; Young Adult

By using the whole-cell clamp-patch technique, the effects of dexamethasone on calcium channel current (Ica) and nicotine receptor channel current (I_(NIC)) were examined. The acute action of glucocorticoid on adrenal medullary chromaffin cell (AMCC) of rats was a significant inhibition of I_(NIC), while no apparent effect was observed on Ica induced by electricity. The results suggest that the acute action of glucocorticoid on catecholamine release in rat AMCC may be directly related to nicotine receptor.

AIM: To study the effects of calcium channel blockers (CCB) on nicotinic acetylcholine receptor current (I_(NIC)) in rat adrenal medullar chromaffin cells (RAMCs). METHODS: By using the whole-cell clamp-patch technique, we have investigated the effects of nifedipine(NIF)、?-conotoxin GVIA and ?-agatoxin IVA on I_(NIC) induced by nicotine(NIC) before and after RAMCs perfusion. RESULTS: After perfusing RAMCs for 5 min, different kinds of calcium channel blockers at different concentration showed significant inhibitory effects on I_(NIC) induced by 50 ?mol/L NIC. The peak inhibition rates of 10 ?mol/L NIF、400 nmol/L ?-conotoxin GVIA and 100 nmol/L ?-agatoxin IVA were (61.7?5.1)%,(29.3?7.4)% and (17.6?7.5)%, respectively. CONCLUSION: The acute effects of different kinds of CCBs on RAMC were that they obviously inhibited I_(NIC) induced by NIC. These results suggest that CCBs may inhibit catecholamine secretion by directly blocking nicotinic acetylcholine receptor channel. [

Objective To observe the changes of neural stem cells(NSCs) in subventricular in developing human fetal brain at(diffe)-rent ages.Methods Thirty cases of embryoes at gestational age 24-28 weeks induced by labor with water bag were collected to determin distribution,shapes and growth modes in subventricular with hybridization in situ under light microscope.Results NSCs expressing Nestin mRNA existed in subventricular from human fetal brain at different ages,NSCs existed in subventricular of different fetal age included astro-NSCs,each had enations from 3 to 6,and all projections crowded together into a reticular plexiform,in which NSCs districuted.Nucli were round in shape,each had nucleoli from 1 to 4.NSCs had rarefaction chromatin,most NSCs existed in a single growth mode,symmetral cleavage growth mode and clony with 3 NSCs would be seen.There were no differences between positive Nestin mRNA NSCs in distribution and cell shapes,but had differences in growth mode.Conclusion NSCs exist in subventricular from different gestational ages and their growth mode are changing with difference of gestational age.

Objective To explore a precise and dependable method for determining neural stem cells(NSCs)in hippocampus from human fetal brain.Methods Ten cases of embryo at gestational age 32 weeks and induction of labor with water bag were collected,affused and sliced including frost slice and paraffin slice for determining alteration of tissue and NSCs in hippocampus from human fetal brain with HE stain and immunohistochemical staining under light microscope.Results Nestin proteins located in NSCs and the number of NSCs were less in paraffin slice of tissue than those in frost slice.Integrality of structure of tissues and cells in paraffin slice excelled in frost slice.Conclusions There is a precise and dependable method including induction of labor with water bag and allusion and frost slice,which is necessary for wide useness in study of NSCs in human fetal brain.

Objective To compare the inhibition effect of budesonide suspension and dexamethasone on the rats′ pneumonic anaphylacticitis and serum IL-5,and study the effect mechanism in treatment of asthma with glucocorticoids on systemic administration and with budesonide suspension.Methods Twenty-six health wistar rats were randomly divided into normal group,asthmatic group,budesonide suspension group and dexamethasone group.Asthma models were sensitized with egg albumin.Before sensitized,budesonide suspension group were administered inhalation of budesonide suspension,and dexamethasone group were administered abdominal injection of dexamethasone.The level of IL-5 was measured with enzyme linked immunosorbent assay(ELISA) reagent box,lung was eviscera-(ted after collecting) blood,pathological slice was made.Results The rats′ pathological changes of lung and bronchus were significant between asthma group and other groups,while there were no significant difference between budesonide suspension group and dexamethasone group,but both of two groups showed slight difference with normal group.Compared with normal group,the level of serum IL-5 in asthma group raised obviously,and there was significant difference(P0.05).Conclusions The treatment of inhalation of budesonide suspension can inhibit rats′ pneumonic anaphylacticitis,ameliorate rat anaphylactic asthma symptom.