Abstract：
:Urine p-aminophenol (PAP) concentration serves as a biological marker for occupational exposures to aniline. We report the development of a rapid, simple spectrophotometric method for quantification of urine PAP concentration using a chemical autoanalyzer (Olympus Reply). The method involves oxidative coupling of PAP with an aromatic compound, xylenol, that contains an electron-donating group, based on an electrophilic aromatic substitution reaction catalyzed by sodium periodate. A calibration curve is constructed in the same matrix, urine, as the unknown samples to be analyzed. In this way, potential matrix interferences are largely avoided. The linearity range of the method is 20 to 400 mg/L. Time-course studies show that the color formation by reaction of PAP with xylenol is rapid and essentially complete within 5 min. Within-run and day-to-day reproducibility data at medium (50 mg/L) and high (200 mg/L) concentrations yield CV's <5.0%. Several prescription drugs and drugs of abuse, as well as related compounds, gave negative tests for interference in the procedure. Clinical applications of the method are illustrated by data for (a) PAP concentrations in 255 urine samples from workers at a rubber plant, and (b) PAP elimination in serial urine samples from 5 volunteers after an oral dose (500 mg) of acetaminophen. In summary, the new method has the advantages of automation, operational simplicity, and suitability for monitoring workers for exposures to aniline.
journal_name
Ann Clin Lab Scijournal_title
Annals of clinical and laboratory scienceauthors
Chen CF,Tseng YT,Tseng HK,Liu TZsubject
Has Abstractpub_date
2004-07-01 00:00:00pages
336-40issue
3eissn
0091-7370issn
1550-8080journal_volume
34pub_type
杂志文章abstract：:To evaluate the screening power of the fecal cytokeratin-19 test (CK-19) and the fecal occult blood test (FOBT), we performed rapid fecal CK-19 and FOBT tests on 515 stool samples from patients with various GI diseases and 814 stool samples from control patients. The rapid fecal CK-19 test (developed by DiNonA Researc...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：2006-07-01 00:00:00
abstract：:The extent to which a diagnostic observation or test contributes to a diagnosis is usually represented by a conditional, or Bayesian, probability. According to information theory, the contribution of a diagnostic observation can also be measured in bits of information. This offers a representation of the Bayes rule wh...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1989-09-01 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：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 present study was performed to determine if any hormone measured in cord blood correlates with the size of the neonatal breast or the presence of galactorrhea. A total of 144 term newborn infants were examined. Estradiol (E2), progesterone (P), testosterone (T), and thyrotropin (TSH) were determined by radioimmuno...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1990-07-01 00:00:00
abstract：:A brief historical review is presented of the development of bovine serum albumin as a standard for the determination of serum total protein. Bovine serum albumin is now available as a standard reference material from the National Bureau of Standards. Also reviewed is the present status of the immunoglobulin standards...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1978-05-01 00:00:00
abstract：:A series of studies were undertaken to evaluate the chemotherapeutic response to various antineoplastic drugs of human breast (MX-1) or colon (CX-2) tumor xenografts growing in genetically athymic (nude) mice. Fragments (2mm3) of either tumor type were implanted subcutaneously into the subaxillary region of NIH Swiss ...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
abstract：:Lymphocytes from rheumatoid arthritis patients have been fused with drug-marked human myeloma cell lines and hybrids selected which secrete rheumatoid factors. Limiting dilution and soft agarose plates have been used to clone these hybrids, but so far stable clones have not been obtained. Epstein-Barr virus has been u...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1984-01-01 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
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journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1994-01-01 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：2006-04-01 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：1983-09-01 00:00:00
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journal_title：Annals of clinical and laboratory science
pub_type： 信件
doi：
更新日期：2015-07-01 00:00:00
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 phos...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1997-11-01 00:00:00
abstract：:Thirty-two Enterobacter cloacae strains that are less susceptible to cefepime than to ceftazidime were collected. This unique phenotype of 8 strains was confirmed using the agar dilution method. OXA1, OXA10, OXA31 and OXA35 were detected in 3, 2, 3, and 2 strains, respectively, whereas all strains were negative for PS...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：2018-05-01 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：2000-07-01 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：2008-01-01 00:00:00
abstract：:People of the Jehovah's Witness faith believe that they shall "abstain from blood." Because of this belief, we encounter the challenges from Jehovah's Witness patients who actively seek medical care for themselves and their children, but refuse the transfusion of blood products, which may result in increased morbidity...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：2016-12-01 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：2014-07-01 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：2016-09-01 00:00:00
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journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章,评审
doi：
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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：
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journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：2002-10-01 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：1979-09-01 00:00:00
abstract：:Primary adenocarcinoma of the fallopian tube is a rare malignant neoplasm of the female reproductive system. Unusual patterns of metastasis may be observed. Report is made of a patient with recurrent adenocarcinoma of the fallopian tube, which presented as leptomeningeal carcinomatosis, as a first site of distant meta...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1996-03-01 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：1982-05-01 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：:Pretreatment with heat decreases mortality and acute lung injury in the rat septic shock model, presumably by the production of heat shock proteins (HSP). However, endotoxin, a severe cell stresser, has not been shown to induce HSP 70. We investigated the effects of severe endotoxemia on the expression of specific pro...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:A statistically significant difference was found between the mean baseline carboxyhemoglobin of non-smoking firemen (COHb 2.53, sd = 1.05, n = 32) and smoking firemen (COHb 5.54, sd = 2.61, n = 26). A consistent increase in mean COHb levels after exposure to smoke was seen in both non-smoking (4.41 sd = 2.95, n = 7) a...
journal_title：Annals of clinical and laboratory science
pub_type： 杂志文章
doi：
更新日期：1976-09-01 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：2020-05-01 00:00:00
