Abstract:
:Experimental evidence documenting the formation of a relatively stable V(IV) species appears to be important with regard to the biochemical mechanism of reduction of vanadate by enzymatic systems. The present study demonstrates that a mixture of vanadate and glutathione reductase/nicotinamide-adenine-dinucleotide phosphate (NADPH), in phosphate (pH 7.2) buffer generates V(IV) under ambient conditions. Once formed, V(IV) does not rapidly autoxidize so as to defy detection by electron spin resonance (ESR) spectroscopy. The aerobic environment was guaranteed by preparing reaction mixtures in well stirred, wide mouth, standard test tubes in air over a period of 50 minutes, and by making ESR measurements in nuclear magnetic resonance (NMR) sample tubes as well as oxygen-permeable Teflon tubes. The V(IV) ESR signal intensity was found to increase linearly with time elapsed after reaction initiation. The linear growth of the V(IV) species also shows that this species is fairly stable, over a period of at least 50 minutes. Similar V(IV) stability data were obtained from VOSO4, a model compound as a source of V(IV). The results obtained in the present study demonstrated that V(IV) can be generated in the reduction of V(IV) by glutathione reductase in the presence of NADPH under aerobic condition.
journal_name
Ann Clin Lab Scijournal_title
Annals of clinical and laboratory scienceauthors
Shi X,Flynn DC,Liu K,Dalal Nsubject
Has Abstractpub_date
1997-11-01 00:00:00pages
422-7issue
6eissn
0091-7370issn
1550-8080journal_volume
27pub_type
杂志文章abstract::M. Tuberculosis (MTB) is an obligate human parasite even though humans are more resistant than any of the animals used for study. It is a human parasite because only humans develop post primary tuberculosis (TB) in their lungs that mediates transmission of infection to new hosts. The extreme paucity of human lung tiss...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2014-10-01 00:00:00
abstract::Acne vulgaris is a common dermatological disorder with a multifactorial pathogenesis. Oxidative status has been implicated in the pathogenesis of several skin diseases, including acne. This study was aimed to investigate the levels of oxidative stress biomarkers in acne vulgaris patients with varying severities. The s...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
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更新日期:2014-04-01 00:00:00
abstract::Serum hepatitis B virus (HBV) markers are the most important data for epidemiological screening and clinical diagnosis of HBV infection, especially in endemic areas. We compared the results of the Roche Modular Analytics E170 assay, the Abbott Architect i2000 assay, and an immunoradiometric assay (IRMA) for HBV surfac...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2007-07-01 00:00:00
abstract::A variety of vaginal and cervical abnormalities have been encountered in the offspring of women who have taken stilbestrol or chemically related nonsteroidal estrogens during pregnancy. Cervical erosion has been noted most often, but vaginal adenosis has been proven by biopsy in over 30 percent, and transverse vaginal...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1974-07-01 00:00:00
abstract:OBJECTIVE:To search for hematological parameters changes in human rotavirus (HRV) infectious acute gastroenteritis in children and find useful parameters for the differential diagnosis in low re-source environments. METHODS:In this study, children less than 5 years old were divided into three groups which were rotavir...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2020-07-01 00:00:00
abstract::A simple, fast, reproducible, and reliable fibrometer method for determination of plasma or serum plasminogen was developed. Results obtained with this method were compared to those obtained with a Coseinolytic method and a Chromogenic Substrate S-2251 method. For all three procedures, serum or plasma samples were aci...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1981-09-01 00:00:00
abstract::Laboratory testing for markers of thyroid function is essential for the diagnosis of thyroid disease, yet, the landscape of thyroid function testing is complex and inappropriate test orders are common. Reverse T3 (rT3) is frequently seen on thyroid function testing menus as a marker of nonthyroidal illness. However, t...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2020-05-01 00:00:00
abstract:CONTEXT:Hepatitis C virus (HCV) infects up to 1.8% of the US general population, although the rate is significantly higher in military veterans at 5.4-20%. Early detection and accurate diagnosis are critical as chronic HCV infection can lead to liver cirrhosis and hepatocellular carcinoma. Genotype analysis has both th...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2012-10-01 00:00:00
abstract::The case is described of a low birth weight infant who developed severe neutropenia, thrombocytopenia and monocytosis in the course of staphylococcal septicemia. Light microscopy examination of the blood revealed bacteria inside the monocytes. On electron microscopy, the monocytes were degranulated and distorted by th...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1982-11-01 00:00:00
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journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
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更新日期:2017-05-01 00:00:00
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journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2011-10-01 00:00:00
abstract::Ultrastructural studies with the transmission (TEM) and scanning (SEM) electron microscopes have added greatly to our knowledge of cellular structure and function in the liver. The normal polyhedral hepatocyte has numerous subcellular organelles, such as mitochondria, peroxisomes, lysosomes and complex rough (rer) and...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章,评审
doi:
更新日期:1984-03-01 00:00:00
abstract::Male Sprague-Dawley rats were subjected for 2 weeks to daily injections of homocysteine (Hcy), which increased plasma Hcy approximately 2-fold. Echocardiography indicated significant increases in left ventricular diastolic (13%) and systolic (31%) dimensions and decreases in posterior wall thickness (diastolic, -17%; ...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2004-04-01 00:00:00
abstract::Several studies have provided reference ranges for the concentration of serum transferrin receptor (sTfR) in various white populations, but there is a dearth of relevant reference sTfR data in non-whites. The aim of this investigation was to establish sTfR reference ranges and mean values for a healthy non-white Arab ...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2007-01-01 00:00:00
abstract::We present an adult autopsy case of primary hyperoxaluria type 1. Diagnosis was established with skin biopsy and subsequent genetic analysis one month prior to death. At autopsy, calcium oxalate crystals refringent to polarized light were found systemically. Interestingly, however, calcium oxalate crystals were not id...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:Human mammary tumor virus (HMTV) is 90-95% homologous to mouse mammary tumor virus, one of the causal agents of murine mammary tumors. Although HMTV has been frequently detected in human breast cancers, its clinical and prognostic value remains unknown. METHODS:In the present study, we analyzed HMTV infecti...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2019-03-01 00:00:00
abstract::We report the case of a 45 year old man who came to Emergency Room of Polyclinic for sudden onset of localized ecchymosis and widespread hematomas. He was subjected to blood count and first level investigations to assess coagulation. Based on the results, second level investigations were performed. Endoscopy of the ga...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2014-07-01 00:00:00
abstract::Twenty-one patients with Parkinson's disease and motor fluctuations who completed a double-blind study comparing controlled-release carbidopa/levodopa (Sinemet CR4) with standard Sinemet (SS) were evaluated one year following completion of the study. Five patients remained on CR4 alone; 16 continued on CR4 plus SS, an...
journal_title:Annals of clinical and laboratory science
pub_type: 临床试验,杂志文章
doi:
更新日期:1989-11-01 00:00:00
abstract::The possible pathologic consequences of the presence of circulating immune complexes in certain disease states has caused considerable attention to be given to the development of laboratory procedures capable of quantitatively measuring the presence of immune complexes in serum. Many assays are available which utilize...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章,评审
doi:
更新日期:1981-05-01 00:00:00
abstract::Infection resulting in transient reticulocytopenia and anemia, the so called "aplastic crisis," has frequently been documented in patients with congenital hemolytic anemia. However, this association with hematologically normal patients has been less well recognized. Its occasional severity is illustrated by this repor...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1982-05-01 00:00:00
abstract::Interactions between human lymphocytes and target cells are highly variable. Lymphocytes may enter fibroblasts, establish cytoplasmic bridges, and draw material through these bridges from the fibroblasts; these lymphocytes may undergo divisions within the fibroblasts, while the fibroblasts vacuolize and die. In this i...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1986-11-01 00:00:00
abstract::Previous studies have suggested that there is a disproportionally higher risk of infection following traumatic brain injury (TBI). This predisposition to infection may be driven by a poorly understood, brain-specific response in the immune system after TBI. However, there is a lack of studies that have fully character...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2017-01-01 00:00:00
abstract::The conjugated bile acid pattern was evaluated in intestinal aspirates of five normal subjects and five patients known to have an abnormal bile acid distribution. The glycine/taurine (G/T) ratios for total bile acids were determined by gas liquid chromatography (GLC) and by enzymatic assay using 3-hydroxysteroid dehyd...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract::Hemoglobin H (Hb H) disease is usually characterized by the existence of Hb H, which influences the degree of functional anemia. We here report a patient with a rare Hb H disease genotype (-SEA/-α27.6), who was observed to paradoxically have no detectable Hb H fraction on electrophoresis. To date, the reason why the q...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2018-11-01 00:00:00
abstract::The beneficial effect of stem cells on several animal models of neuropathic pain has been recognized recently. However, there have been no studies on the effects of neural stem cell transplantation on neuropathic pain. In the present study, using the rat model of chronic constriction injury of the sciatic nerve, we ob...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2013-04-01 00:00:00
abstract:BACKGROUND:Quality assurance of newly developed or manufactured blood grouping reagents with reagent red blood cells (RBCs) is crucial in the process of product approval by governmental agency. However, RBCs with rare blood group are not easily available in the fresh state. We investigated the feasibility of cryopreser...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2018-03-01 00:00:00
abstract::Von Willebrand factor (VWF) cleaving metalloprotease, ADAMTS13, known for its causative relation to thrombotic thrombocytopenic purpura (TTP), also decreases to variable degree in other clinical conditions associated with thrombocytopenia, indicating a possible contribution of moderate deficiency of ADAMTS13 to platel...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2008-10-01 00:00:00
abstract::Blood lymphocyte distributions, serum immunoglobulin and cytokine levels, and serum IgE and IgG anti-varicella zoster virus (VZV) levels were measured in an atopic girl (age 15 yr) who developed shingles 10 yr after infection with chicken pox. Before, during, and 5 months after the shingles episode, the child's distri...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
abstract::Alzheimer's disease (AD), a progressive neurodegenerative disorder, accounts for approximately 60 percent of all victims of dementia and affects greater than 10 percent of the population over 65 years old. Although the cause is unknown, there is evidence that beta-amyloid plays an important role in its pathogenesis. T...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章,评审
doi:
更新日期:1993-05-01 00:00:00
abstract::Erythrocytosis was induced in Fischer rats by intrarenal (ir) injection of nickel subsulfide (Ni3S2) in dosages ranging from 0.6 to 10 mg per rat. Measurements of blood packed cell volume (PCV) became increased by one month after ir injection of Ni3S2; reached maximum values at approximately two months; and gradually ...
journal_title:Annals of clinical and laboratory science
pub_type: 杂志文章
doi:
更新日期:1977-01-01 00:00:00