No abstract available.
Antibodies* ; Borrelia burgdorferi* ; Borrelia* ; Immunoblotting* ; Lyme Disease*

The aim of this study was to evaluate domestic enzyme immunoassay(EIA) kit ?LG HCD 3.0?(LG) for the detection of antibody to hepatitis C virus(anti-HCV) in comparision with Axsym HCV version 3.0(Axsym), Cobas Core anti-HCV EIA(Cobas). Cobas kit shows better clear distinction between positive and negative by signal/cutoff ratio(S/C), but it also reveal relatively high false positive rate. The concordance rate of test results between LG and Axsym was 96.2%, between LG and Cobas was 95.5%, and total agreement between three EIA kit was 93.9%. LG were relative poor distinction between positive and negative results, but it could be applied clinically as a screening tool for hepatitis C in general population. The S/C of one false negative result by LG was 0.91, and false positive were less than 4.0, therefore we concluded it is necessary to confirm by immunoblotting assay when S/C were between 0.8 and 4.0.
Hepacivirus ; Hepatitis C ; Immunoblotting ; Immunoenzyme Techniques* ; Mass Screening

OBJECTIVES: To investigate the effects of KCl on regulation of circadian gene CLOCK expression, we observed whether induction of CLOCK is influenced by KCl depolarization in B35 rat neuroblastoma cells. METHODS: B35 rat neuroblastoma cells were grown in Dulbecco's modified Eagle's medium supplemented with 10% FBS and 1% penicillin-streptomycin in a 37 degrees C humidified incubator with 5% CO2. Inhibitors including cycloheximide and actinomycin D were pretreated 1 hour before treatment with 50mM KCl. Immunoblotting with anti-CLOCK antibody was done. RESULTS: CLCOK is induced by 50 mM KCl in B35 Rat Neuroblastoma cells, and a maximal induction in CLOCK level reached peak at 8 to 20 hours. The pretreatment of cycloheximide and actinomycin D prevented the induction of CLOCK by 50 mM KCl. CONCLUSION: We suggest that KCl depolarization may play critical roles in several aspects of the circadian gene CLOCK expression.
Animals ; Circadian Clocks ; Cycloheximide ; Dactinomycin ; Immunoblotting ; Incubators ; Neuroblastoma* ; Rats*

Agglutination Tests ; HIV Infections ; diagnosis ; virology ; Immunoblotting ; Immunologic Tests

No abstract available.
Electrophoresis, Polyacrylamide Gel* ; Immunoblotting* ; Korea* ; Rickettsia typhi* ; Rickettsia*

This study aimed to examine whether the expression of major prostaglandin E2 (PGE2) synthesis enzyme, cyclooxygenase-2 (COX-2), is changed in the kidneys of the rats with lithium-induced nephrogenic diabetes insipidus (Li-NDI). Sprague- Dawley rats treated with lithium for 4 weeks were used as the NDI model and expression of renal COX-2 was determined by immunoblotting and immunohistochemistry. In Li-NDI where urine output was markedly increased and urine osmolality was significantly decreased, COX-2 expression in the inner medulla was decreased (28% of control), while it increased 18-fold in the cortex and outer medulla. Consistent with this, labeling intensity of COX-2 in macula densa region was increased, whereas it was decreased in the interstitial cells in the inner medulla, indicating a differential regulation of COX-2 between the cortex and inner medulla in Li-NDI. Accordingly, urinary PGE2 excretion was significantly increased in Li-NDI. In conclusion, there is a differential regulation of COX-2 between cortex and inner medulla in Li- NDI and urinary PGE2 excretion is increased in Li-NDI, possibly due to an increased renal production. This may suggest that increased renal production of PGE2 could play a role in modulating water reabsorption in the renal collecting duct in Li-NDI.
Animals ; Aquaporins ; Cyclooxygenase 2* ; Diabetes Insipidus, Nephrogenic* ; Dinoprostone ; Immunoblotting ; Immunohistochemistry ; Kidney ; Lithium ; Osmolar Concentration ; Prostaglandins ; Rats*

Bullous pemphigoid(BP) and herpes gestationis(HG) are subepidermal bullous diseases which show clinical and immunological similarities. Both diseases show immune deposits along the basement membrane zone and their autoantibodies bind a common antigenic site within the non-collagenous stretch of the 180 kDa BPAG2 ectodomain. Besides its association with pregnancy, HG has some characteristic features that distinguish it from BP. The serum of patients with HG often contains an IgG that avidly fixes complement, and showes IgG1 subclass predominance. We report here two cases of non-pregnant young women presenting clinical and histological features of bullous pemphigoid or herpes gestationis. The immunopathology, IgG subtyping and immunoblotting studies showed that the autoantibodies in the patients were the characteristic ones of herpes gestationis. The patients might be a subtype of BP that have characteristics of autoantibodies of HG patients.
Autoantibodies* ; Basement Membrane ; Complement System Proteins ; Female ; Humans ; Immunoblotting ; Immunoglobulin G ; Pemphigoid Gestationis* ; Pemphigoid, Bullous* ; Pregnancy

We investigated the expression of aquaporin 1 (AQP1) in tissues from canines with an inherited anomaly that causes their erythrocytes to have high K+. Northern blot analysis revealed abundant AQP1 expression in lung and kidney, though little expression was found in spleen. Using anti-C-terminus for dog AQP1, abundant expression was shown in kidney, trachea, and eye, but little expression was shown in pancreas and cerebrum, indicating that AQP1 expression in canine tissues is similar to that noted in other mammals.
Animals ; Aquaporin 1/*metabolism ; Blotting, Northern ; Dogs ; Erythrocytes/*chemistry ; Immunoblotting ; Potassium/*analysis ; Viscera/metabolism

OBJECTIVES: The aim of the present study is to explore the effect of fluoxetine on transcription, translation and activity of tryptophan hydroxylase (TPH), and intracellular level of serotonin. METHODS: The expression level of the TPH mRNA and the protein, the TPH enzyme activity, and the intracellular level of serotonin were explored at the fluoxetine-treated RBL-2H3 cells. Real-time RT-PCR and immunoblotting analysis confirmed changes in the expression of TPH mRNA and protein. The activity of TPH was measured using [3H]tryptophan. The intracellular level of serotonin was measured by HPLC. RESULTS: The TPH activity was gradually increased on time from 24hr to 72hr. The real-time RT-PCR also revealed that the TPH mRNA was increased at 12, 24 and 72hr in the fluoxetine-treated RBL-2H3 cells. The immunoblotting analysis also revealed that the TPH protein was decreased at 72hr in the fluoxetine-treated RBL-2H3 cells. The intracellular level of serotonin was increased at 48hr after treatment of fluoxetine. CONCLUSION: Fluoxetine induced the increases of the TPH mRNA, the TPH enzyme activity and intracellular level of serotonin, and the decrease of the TPH protein expression at the RBL- 2H3 cells.
Chromatography, High Pressure Liquid ; Fluoxetine ; Immunoblotting ; RNA, Messenger ; Serotonin ; Tryptophan Hydroxylase* ; Tryptophan*

BACKGROUND: Currently, serological assay, immunoblotting, and nucleic acid amplification test (NAT) are required as reentry tests for deferred donors with hepatitis C virus (HCV) or human immunodeficiency virus (HIV) screening reactive result. However, immunoblotting must be performed even for serological nonreactive donors. In this study, the efficacy of immunoblot applications for serological nonreactive donors in donor reentry procedures was examined. METHODS: We analyzed non-qualified donors with immunoblot results from 2011 to 2015 in Korea and investigated reentry procedures related with HCV or HIV in other countries. RESULTS: Percentages of donors who could not be released due to immunoblot results even with serological nonreactive results were 54.2% (1,824/3,367) for HCV and 35.9% (4,300/11,964). In the case of 662 donors, their results were considered to be different using other assay kits or based on other criteria. In other countries, immunoblotting is not required as a donor reentry test. CONCLUSION: Indeterminate or reactive immunoblotting results in serological nonreactive donors were due to nonspecific reactions. It is not reasonable to apply immunoblotting to serological nonreactive donors. Therefore, we suggest that immunoblot assays be excluded from the reentry test.
Hepacivirus ; HIV* ; Humans ; Immunoblotting ; Korea ; Mass Screening* ; Nucleic Acid Amplification Techniques ; Tissue Donors*