AIMTo investigate whether urine is a good medium for screening and whether there is a correlation between the amount of extracted DNA and human papillomavirus (HPV)-positivity.

METHODSIn the present study, 30 first-voided urine (FVU) specimens and 20 urethroglandular swabs using cervex-brushes from male partners of HPV-positive patients, and 31 FVU specimens and 100 liquid-based cervix cytology leftovers sampled with cervix-brushes from HPV-positive women were examined for the presence of beta-globin. Oncogenic HPV were detected using type-specific PCR.

RESULTSbeta-globin was found in all the brushed samples, whereas it was found in only 68.9% of the FVU specimens. HPV-PCR was positive in 60.0% of the male brushes, in 29% of the female brushes and in 0% of the male FVU specimens. DNA concentration was, respectively, 0.9998 ng/microL, 37.0598 ng/microL and 0.0207 ng/microL.

CONCLUSIONUrine is not a good tool for HPV detection, probably because the low DNA concentration reflects a low amount of collected cells. beta-globin is measurable in FVU by real time quantitative PCR, but the DNA concentration is lower compared to brush sampling for both genders. beta-globin-positivity of urethral and cervical swabs is 100%, showing a higher mean concentration of DNA, leading to a higher detection rate of HPV. This is the first article linking DNA-concentration to the presence of HPV.

Alphapapillomavirus ; genetics ; isolation & purification ; Cervix Uteri ; virology ; DNA, Viral ; genetics ; isolation & purification ; Female ; Globins ; urine ; Humans ; Male ; Papillomavirus Infections ; diagnosis ; epidemiology ; urine ; Polymerase Chain Reaction ; Urine ; virology

OBJECTIVESTo assess the incidence of tetrahydrobiopterin (BH4) deficiency among patients with hyperphenylalaninemia (HPA) in southern Chinese and evaluate clinical outcome and gene mutations in tetrahydrobiopterin deficient patients.

METHODSUrinary neopterin (N) and biopterin (B) was analyzed in 87 patients with hyperphenylalaninemia by high-performance liquid chromatography. Further combined loading tests with phenylalanine (Phe) (100 mg/kg) and tetrahydrobiopterin (BH4) (7.5 mg/kg) were performed in suspected patients with abnormal urinary pterin profiles. Gene mutation analysis was performed for patients with BH4 deficiency and their parents. BH4 deficient patients were treated with BH4 and neurotransmitter precursors after diagnosis. Blood phenylalanine levels, clinical symptoms and mental development were followed up.

RESULTSEleven patients were diagnosed as having BH4 deficiency caused by 6-pyruvoyl tetrahydropterin synthase (PTPS) deficiency. The incidence of tetrahydrobiopterin (BH4) deficiency among patients with hyperphenylalaninemia (HPA) in southern Chinese was 10%. Combined loading tests with phenylalanine and oral BH4 were done in 4 of 11 patients and their phenylalanine levels were decreased to normal 4 - 6h after BH4 administration. Four different mutations (P87S, N52S, D96N and G144R) in the PTPS gene were detected in 5 families. Five PTPS-deficient patients were treated with synthetic BH4, neurotransmitter precursors (L-dopa plus carbidopa, and 5-hydroxytryptophan). They had satisfactory physical and mental development after treatment. One patient with partial PTPS deficiency had normal growth and mental development without treatment.

CONCLUSIONSOur results emphasize that screening for BH4 deficiency should be carried out in all patients with hyperphenylalaninemia in order to minimize the misdiagnosis. Patients with BH4 deficiency should be treated early with BH4 and a combination of neurotransmitter precursors.

Biopterin ; administration & dosage ; analogs & derivatives ; deficiency ; urine ; China ; DNA Mutational Analysis ; DNA, Complementary ; chemistry ; genetics ; Follow-Up Studies ; Genetic Testing ; Humans ; Mutation, Missense ; Neopterin ; urine ; Phenylketonurias ; blood ; enzymology ; genetics ; Phosphorus-Oxygen Lyases ; genetics ; metabolism

OBJECTIVETo quantify human cytomegalovirus (HCMV) DNA in the blood and urine of infants of different ages with suspected HCMV infection, and in the breast milk of their mothers, and to evaluate the significance of HCMV DNA detection in the three specimen types in the diagnosis of HCMV infection among infants of different ages.

METHODSA total of 170 infants with suspected HCMV infection were divided into groups A (<28 days; n=43) and B (28 days to 5 months; n=127) according to their ages. Blood and urine were collected from the infants, and breast milk was collected from their mothers. The specimens were examined by fluorescence quantitative PCR for detection of HCMV DNA.

RESULTSIn group A, HCMV DNA detection rates in blood, urine and breast milk were 65.1%, 18.6% and 93.0% respectively. In group B, HCMV DNA detection rates in blood, urine and breast milk were 64.6%, 92.9% and 72.4% respectively. HCMV DNA detection rate in urine in group B was significantly higher than in group A (P<0.01), however, HCMV DNA detection rate in mothers' breast milk in group B was significantly lower than in group A (P<0.01). Among the 82 infants with positive results for blood and urine, the copy number of HCMV DNA in urine was significantly higher than that in blood.

CONCLUSIONSHCMV DNA detection rates in urine and breast milk are different among infants of different ages, so use of suitable specimens according to age is of great significance for improving detection rate.

Animals ; Cytomegalovirus Infections ; diagnosis ; DNA, Viral ; analysis ; blood ; urine ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Milk, Human ; virology ; Pregnancy

OBJECTIVETo study the anticlastogenic effect of redistilled cow's urine distillate (RCUD) in human peripheral lymphocytes (HLC) challenged with manganese dioxide and hexavalent chromium.

METHODSThe anticlastogenic activity of redistilled cow's urine distillate was studied in human polymorphonuclear leukocytes (HPNLs) and human peripheral lymphocytes in vitro challenged with manganese dioxide and hexavalent chromium as established genotoxicants and clastogens which could cause induction of DNA strand break, chromosomal aberration and micronucleus. Three different levels of RCUD: 1 microL/mL, 50 microL/mL and 100 microL/mL, were used in the study.

RESULTSManganese dioxide and hexavalent chromium caused statistically significant DNA strand break, chromosomal aberration and micronucleus formation, which could be protected by redistilled cow's urine distillate.

CONCLUSIONThe redistilled cow's urine distillate posseses strong antigenotoxic and anticlastogenic properties against HPNLs and HLC treated with Cr+6 and MnO2. This property is mainly due to the antioxidants present in RCUD.

Animals ; Antimutagenic Agents ; pharmacology ; Antioxidants ; pharmacology ; Cattle ; urine ; Cells, Cultured ; Chromium ; antagonists & inhibitors ; toxicity ; DNA Damage ; Humans ; Hydrogen-Ion Concentration ; Lymphocytes ; drug effects ; Manganese Compounds ; antagonists & inhibitors ; Mutagenicity Tests ; Mutagens ; toxicity ; Oxides ; antagonists & inhibitors ; toxicity ; Urine ; chemistry

BACKGROUNDPrevious investigations indicate that cooks are exposed to polycyclic aromatic hydrocarbons (PAH) from cooking oil fumes (COF). However, Emission of PAH and their carcinogenic potencies from cooking oil fumes sources have not been investigated among cooks.

AIMSTo investigate the urinary excretion of a marker for oxidative DNA damage, 8-hydroxydeoxyguanosine (8-OHdG), in different groups of cooks and different exposure groups, and to study the association between 8-OHdG and 1-hydroxypyrene (1-OHP), a biological marker for PAH exposure.

METHODSUrine samples were collected from different groups of cooks (n = 86) and from unexposed controls (n = 36), all are male with similar age and smoking habits. The health status, occupational history, smoking, and alcohol consumption 24 hours prior to sampling was estimated from questionnaires. The urinary samples were frozen for later analyses of 8-OHdG and 1-OHP by high performance liquid chromatography.

RESULTSExcretion in urine of 8-OHdG were similar for controls (mean 1.2 µmol/mol creatinine, n = 36), and for those who had been in the kitchen room with exhaust hood operation (mean 1.5 µmol/mol creatinine, n = 45). COF exposed cooks without exhaust hood operation had increased excretion of 8-OHdG (mean 2.3 µmol/mol creatinine, n = 18). The difference between this group and the unexposed controls was significant. The urinary levels of ln 1-OHP and ln 8-OHdG were still significantly correlated in a multiple regression analysis.

CONCLUSIONResults indicate that exposure to PAH or possibly other compounds in COF may cause oxidative DNA damage.

Adult ; Air Pollutants, Occupational ; urine ; Cooking ; DNA Damage ; Deoxyguanosine ; analogs & derivatives ; urine ; Humans ; Male ; Occupational Exposure ; Oils ; adverse effects ; Oxidative Stress ; Polycyclic Aromatic Hydrocarbons ; adverse effects ; Surveys and Questionnaires ; Young Adult

OBJECTIVTo investigate the potential value of urine hepatitis B virus (HBV) DNA as a new noninvasive diagnostic indicator for HBV-associated glomerulonephritis (HBV-GN).

METHODSA total of 152 patients including 66 with HBV-GN, 66 with non-HBV-GN, and 20 with chronic hepatitis B (CHB) without renal disease were examined for serum and urine HBV DNA levels using polymerase chain reaction (PCR) and for 5 serum HBV markers using enzyme-linked immunosorbent assays.

RESULTSTwenty-two patients (33%) in the HBV-GN group, but none in the other two groups, were found positive for urine HBV DNA. In the diagnosis of HBV-GN, urine HBV DNA had a high specificity (0.98), a good positive predictive value (PPV, 0.96), and a modest negative predictive value (NPV, 0.60). Urine HBV DNA, alone or in combination with serum HBeAg, was superior in the diagnosis of HBV-GN to the combination of urine HBV DNA with serum HBV DNA, hepatitis B surface antigen and the hepatitis B e antigen.

CONCLUSIONUrine HBV DNA may be one of the new noninvasive diagnostic criterion for HBV-GN.

Biomarkers ; blood ; urine ; DNA, Viral ; blood ; urine ; Enzyme-Linked Immunosorbent Assay ; Glomerulonephritis ; diagnosis ; virology ; Hepatitis B Surface Antigens ; blood ; Hepatitis B e Antigens ; blood ; Hepatitis B, Chronic ; complications ; Humans ; Polymerase Chain Reaction ; Predictive Value of Tests ; Sensitivity and Specificity

Our study explored the dynamic changes in and the relationship between the DNA damage marker 8-hydroxy-2'-deoxyguanosine (8-OHdG) and the DNA repair marker 8-hydroxyguanine DNA glycosidase 1 (hOGG1) according to the length of occupational employment in nickel smelting workers. One hundred forty nickel-exposed smelting workers and 140 age-matched unexposed office workers were selected from the Jinchang cohort. The 8-OHdG levels in smelting workers was significantly higher than in office workers (Z=-8.688, P<0.05) and the 8-OHdG levels among nickel smelting workers in the 10-14 y employment length category was significantly higher than among all peers. The hOGG1 levels among smelting workers were significantly lower than those of non-exposed workers (Z=-8.948, P<0.05). There were significant differences between employment length and hOGG1 levels, with subjects employed in nickel smelting for 10-14 y showing the highest levels of hOGG1. Correlation analysis showed positive correlations between 8-OHdG and hOGG1 levels (r=0.413; P<0.01). DNA damage was increased with employment length among nickel smelting workers and was related to the inhibition of hOGG1 repair capacity.
Biomarkers ; Case-Control Studies ; Cohort Studies ; DNA Damage ; drug effects ; DNA Glycosylases ; blood ; DNA Repair ; Deoxyadenosines ; blood ; Humans ; Male ; Metallurgy ; Nickel ; toxicity ; urine ; Occupational Exposure ; adverse effects ; Time Factors

OBJECTIVETo investigate the association of polymorphisms of nucleotide excision repair genes and chromosomal damage in peripheral blood lymphocytes among coke-oven workers.

METHODSThe genotypes of ERCC1 C19007T, ERCC2 C22541A, ERCC2 G23591A, ERCC2 A35931C, ERCC4 T30028C, ERCC5 G3507C and ERCC6 A3368G among 140 coke-oven workers and 66 non-coke-oven controls were determined by PCR-PFLP methods. Chromosomal damage was detected by cytokinesis-block micronucleus (CBMN) assay.

RESULTSMultivariate analysis of covariance revealed that in coke-oven workers, the ERCC1 19007 CC genotype exhibited significantly higher CBMN frequency [(1.05 +/- 0.68)%] than did the CT [(0.81 +/- 0.66)%] (P = 0.01) or TT [(0.66 +/- 0.37)%] (P = 0.05) or CT + TT genotypes [(0.75 +/- 0.63)%] (P = 0.004). For the ERCC6 A3368G polymorphism, AA genotype exhibited significantly higher CBMN frequency [(1.00 +/- 0.69)%] than did the AG [(0.67 +/- 0.42)%] (P = 0.05) or AG + GG genotypes [(0.66 +/- 0.41)%] (P = 0.02). Stratification analysis found the significant association between the two polymorphisms, ERCC1 C19007T and ERCC6 A3368G, and the CBMN frequencies were most pronounced in older workers. In addition, for the polymorphism of ERCC2 G23591A, GA carriers had significantly higher CBMN frequencies [(1.40 +/- 0.63)%] than those GG carriers [(0.98 +/- 0.59)%] (P = 0.01) in older workers.

CONCLUSIONSOur results suggested that polymorphisms of ERCC1 C19007T, ERCC6 A3368G and ERCC2 G23591A were associated with the CBMN frequencies in coke-oven workers.

Adult ; Alcohol Drinking ; Coke ; Comet Assay ; DNA Damage ; DNA Repair ; genetics ; DNA Repair Enzymes ; genetics ; Dihydroxydihydrobenzopyrenes ; urine ; Extraction and Processing Industry ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; Genotype ; Humans ; Lymphocytes ; Male ; Micronucleus Tests ; Middle Aged ; Occupational Exposure ; analysis ; Polymorphism, Genetic ; Smoking

A considerable number of adult Korean women avoid a Pap smear due to fear and discomfort of the pelvic examination. A reliable but noninvasive and comfortable screening method would considerably increase the participation rate. To evaluate the clinical efficacy of urine-based human papillomavirus (HPV) detection by oligonucleotide microarray, the results of HPV test from matched cervical swab specimens were compared. HPV DNA was detected in 70 of 100 cervical samples. HPV 16 was the most prevalent type (38/70), followed by types 18, 58, 52, 33, 35, 31, and 51. HPV DNA was identified in 47 of 90 urine samples. HPV 16 was the most prevalent type (30/45), followed by types 18, 52, 35, 51, 58, 33, and 56. The HPV detection rates of the cervical swabs increased in accordance with the severity of the cytologic and histologic diagnosis. The type specific agreement of HPV DNA tests between cervical swabs and urine was good in HPV 16 (kappa index=0.64 [95% CI: 0.50-0.79]), 18, 52, and 58 and fair in HPV 33 and 35. We propose that a urine HPV test is a valuable adjunctive method for a conventional Pap smear and can be used in population screening for cervical cancer in countries where it is difficult to obtain colposcopic specimens for cultural or religious reasons.
Vaginal Smears ; Uterine Cervical Neoplasms/*diagnosis ; Papillomaviridae/genetics/*isolation & purification ; Oligonucleotide Array Sequence Analysis ; Middle Aged ; Humans ; Female ; DNA, Viral/*urine ; Cervical Intraepithelial Neoplasia/diagnosis ; Aged ; Adult

OBJECTIVETo investigate the risk factors for hearing impairment induced by cytomegalovirus (CMV) infection in children.

METHODSOne hundred and fifty-eight children diagnosed with CMV infection were enrolled as subjects. Based on the results of the brainstem auditory evoked potential (BAEP) test, patients were classified into normal hearing group (n=117; BAEP≤35) and abnormal hearing group (n=41; BAEP>35). A retrospective analysis was performed on the general information, routine blood indices, liver function, copy number of CMV-DNA in urine and breast milk. The receiver operating characteristic (ROC) curve was used to predict the copy number of CMV-DNA resulting in abnormal BAEP. The Spearman rank correlation analysis was used to test the correlations of the copy number of CMV-DNA in urine with the degree of hearing impairment and platelet count.

RESULTSThe incidence rates of platelet abnormality and abnormal liver function and the copy number of CMV-DNA in urine were significantly higher in the abnormal hearing group than in the normal hearing group (P<0.01). According to the ROC curve, the copy number of CMV-DNA in urine had a sensitivity of 46.3% and a specificity of 93.2% in predicting hearing impairment when it reached 1.415×10(6) per mL. The results of correlation analysis showed that the degree of hearing impairment was positively correlated with the copy number of CMV-DNA (r=0.382, P<0.01); the platelet count was negatively correlated with the copy number of CMV-DNA in urine (r=-0.233, P=0.003).

CONCLUSIONSAn increased copy number of CMV-DNA in urine might be a risk factor for hearing impairment induced by CMV infection. Children are likely to have hearing impairment when the copy number of CMV-DNA reaches 1.415×10(6) per mL. The monitoring of hearing should be strengthened in CMV-infected children with a decreased platelet count.

Cytomegalovirus Infections ; complications ; DNA, Viral ; urine ; Evoked Potentials, Auditory, Brain Stem ; Female ; Hearing Loss ; etiology ; Humans ; Infant ; Infant, Newborn ; Male ; Platelet Count ; ROC Curve ; Retrospective Studies ; Risk Factors