Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0033687 (proteinuria)
 24,015 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This article discusses a simple, sensitive, reproducible method for detecting HCG (human chorionic gonadotropin) in the urine and the subsequent early diagnosis of pregnancy. 5 ml of filtered urine sample (early morning) was concentrated in an M (microconcentrator) to 0.1 ml of retentate diluted with 0.4 ml of distilled water. It was then tested in a M-HIT (hemagglutination test). Another 0.1 ml aliquot of urine sample (filtered and unconcentrated) was diluted with the same amount of distilled water and tested in the same HIT (hemagglutination test). Urine samples from women of reproductive age, from perimenopausal, menopausal, and proteinuric women, and from adult males were tested in both the HIT and M-HIT, as well as in the MOB (mouse ovulation bioassay). The M-HIT Proved to be significantly more reliable than the HIT for diagnosis of early pregnancy, 25-55 days following menses. Appropriate negative results were obtained with the M-HIT in those urine samples from most of the nonpregnant, cycling, perimenopausal and postmenopausal women, and the adult males. False-positive reactions in the M-HIT resulted from the urine specimens of those with severe proteinuria. The MOB yielded positive results in a number of urine samples from pregnant, perimenopausal and menopausal women. The M-HIT, if properly done, indicates high reliability in diagnosing pregnancy as early as the 26th day in the cycles of menstruating women.
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PMID:A simple and sensitive nonradioactive method for the detection of urinary human chorionic gonadotropin and diagnosis of early human pregnancy. I. Multiple-unit test. 48 29

The clinicopathological features of a 28-year-old woman with placental-site trophoblastic tumor (PSTT) are described. The patient presented with severe proteinuria and was found to have a cystic uterine tumor. The serum beta-human chorionic gonadotropin (hCG) level was only slightly elevated. The tumor extended to the serosa without gross metastasis, and was resected. The specimen was composed of active intermediate trophoblasts (IT) and degenerative or inactive ITs. The former component had round to oval and vesicular nuclei, and abundant amphophilic or lightly eosinophilic cytoplasm. The latter component had irregular-shaped pyknotic nuclei and deeply eosinophilic cytoplasm. However, the tumor lacked the bilaminar (cyto- and syncytiotrophoblastic) structure that is a characteristic feature of choriocarcinoma. Immunohistochemical evaluation with human placental lactogen (hPL) and hCG antisera revealed that most of the tumor cells contained abundant hPL, whereas only a small number of cells contained hCG. This method seemed to be most helpful for the differential diagnosis of PSTT from other trophoblastic tumors or non-trophoblastic uterine tumors, and also to be useful for determining the prognostic behavior of PSTT.
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PMID:Placental-site trophoblastic tumor of the uterus. Clinicopathological and immunohistochemical observations of a case. 283 63

Case reports are presented on 2 patients to show the importance of following up apparently false positive results of pregnancy tests. In case 1, a 25-year-old woman was admitted to the hospital with severe breathlessness in September 1987. After she had stopped using oral contraceptives (OCs) in 1985 her periods were irregular and on 4 occasions the results of pregnancy tests bought over the counter were positive. She was twice referred for ultrasound examinations, but the uterus was empty each time. In April 1987, dysfunctional uterine bleeding was diagnosed; she was treated with clomiphene. She then experienced intermittent pleuritic chest pain and breathlessness on exertion. In early September she was admitted with acute breathlessness and chest pain. A further pregnancy test was positive; results of laparoscopy of the pelvis were normal. A radioisotope ventilation-perfusion lung scan showed multiple filling defects in the left lung and no perfusion to the right. A presumptive diagnosis of choriocarcinoma was made with the syndrome of tumor growing in the pulmonary arteries. In case 2, a 32-year-old woman was admitted to the hospital in March 1988 with acute lower abdominal pain. A pregnancy test was positive, and she underwent laparoscopy for suspected ectopic pregnancy. A macroscopic tumor was found on the surface of the right ovary and a right salpingo-oophorectomy was performed. A subsequent histological examination showed choriocarcinoma. The 2 cases reported show the importance of seeking a definitive explanation for a false positive result of a pregnancy test. If the test has been performed correctly and proteinuria and drug interference, for instance, are ruled out, then a raised human chorionic gonadotropin concentration, particularly in young women, is virtually certain. In most cases this will be due to a pregnancy that ends in a 1st trimester abortion, but in a small minority it will be due to the hormone producing a tumor such as choriocarcinoma.
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PMID:Don't ignore a positive pregnancy test. 284 5

Pregnancy tests aimed at detecting the presence of human chorionic gonadotropin (hCG) in maternal plasma and its excretion in urine have become a valuable diagnostic tool. The newer tests offer greater sensitivity and specificity than the older 2-minute slide tests or tube tests. At present, the most promising pregnancy tests are the enzyme-linked immunoassays. These are qualitative tests that involve enzyme-linked immunosorbent assay (ELISA) and monoclonal antibodies. This technology is readily adaptable to most clinic and office settings and may be run on either serum or urine specimens. Advantages include its ready availability, simplicity, sensitivity, and specificity for the beta subunit of hCG. Over-the-counter pregnancy tests for use by nonprofessionals have been available since the mid-1970s; however, these tests have a relatively high (25%) false-negative rate. Among the problems that have arisen in testing for pregnancy by hCG determination are the interference of proteinuria with urine pregnancy tests, an irreducible level of technical error, the tendency of certain drugs to produce a false-positive result, and quality control. In general, physicians should consider several factors--the technical skills and training of the office staff performing the tests, shelf life of the test, the need to refrigerate reagents, and frequency of usage--in selecting a pregnancy test for office use. Test results should be correlated with specific patients and clinical findings, and patients with negative or equivocal results should be retested a few days later.
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PMID:Update on pregnancy testing. 354 Oct 14

A study was undertaken to determine the most reliable immunologic pregnancy test or tests and to determine which factors unrelated to pregnancy influence test results. 1 direct latex aggutination test using both serum and uterine. 4 latex inhibition-agglutination slide tests, and 3 hemagglutination-inhibition tube tests were used. These tests were compared in pregnant and nonpregnant patients in the following categories: patients with proteinuria, those receiving psychotropic drugs, women taking oral progestins, postmenopausal females, and hyperthyroid patients. Also evaluated were patients with a known acute ectopic gestation. In all, 1661 tests were performed on urine and serum samples from 206 patients. patients. Results indicated that there is a difference not only in the sensitivities of the various reagents, but in the degree to which factors other than the presence of chorionic gonadotropin may influence the tests. In general, the hemagglutination-inhibition tube tests are more sensitive than the latex agglutination-inhibition slide tests, and they are, therefore, able to detect lower levels of chorionic gonadotropin. Slide tests, however, can be completed in several minutes while tube tests may take as long as 2 hours to complete. The data of this study indicate that some of the psychotropic drugs, proteinuria, the postmenopausal state, and possibly, hyperthyroidism may cause falsely positive reactions with some of the reagents. The oral estrogen-progestins do not appear to affect the test results. As a general all-purpose office pregnancy screening test, the Pregnosticon Slide test appears to offer the greatest number of advantages and the fewest disadvantages. If increased sensitivity or quantitative studies are desired, the tube tests (UCG, Pregnosticon Tube and Pregnosticon Accuspheres) should be used for problem pregnancies.
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PMID:Immunologic tests for pregnancy. A comparison. 491 53

This communication describes the light, electron, and immunofluorescence microscopy of renal biopsy specimens from a patient with hydatidiform degeneration of the placenta and coexisting fetus. Symptoms of toxemia appeared in the 18th week of gestation and were accompanied by heavy proteinuria, decreased renal function, and disproportionately elevated serum uric acid concentration. The biopsy findings were consistent with the renal lesions of toxemia of pregnancy, although other renal diseases such as Henoch Schonlein nephritis or lupus proliferative glomerulonephritis cannot be excluded. Normal serological tests and disappearance of proteinuria, along with recovery of renal function to normal promptly after termination of pregnancy, tend to rule out other renal diseases. The molar transformation of the placenta, or the interaction with the kidney of certain humoral factors such as human chorionic gonadotropin which was markedly elevated in this patient, may be related to the pathophysiology of toxemia of pregnancy.
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PMID:Toxemic renal disease in incomplete molar pregnancy. 704 59

False positive, 'atypical ring' pregnancy tests were identified in 14 patients with systemic lupus erythematosus. The abnormality was associated with heavy proteinuria in 8 patients, menopause or drug-induced amenorrhea in 4 patients, and actual pregnancy in one patient. Serum levels of human chorionic gonadotropin were normal in 13 patients and elevated in the single patient with a true pregnancy.
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PMID:False positive pregnancy tests in systemic lupus erythematosus. 709 92

Coexistent hydatidiform mole (46, XX) and live fetus (46, XY) in the second trimester is a rare phenomenon. In this case, the clinical manifestations presented as pregnancy-induced hypertension, including hypertension, proteinuria and oliguria. Ultrasonic examination found an enlarged placenta with a typical honeycomb picture, placenta previa and a normal developing fetus. The patient underwent an emergency cesarean section at 23 weeks' gestation on a preliminary diagnosis of acute chorioamnionitis. A 700 g immature male baby was delivered with Apgar scores of 3 at one minute, and 7 at five minutes. The placenta was composed of two parts: one was a molar pregnancy and the other was a normal placenta, both were separated by the membrane. The membrane consisted of one chorion and two amnions. Postmolar persistence of human chorionic gonadotropin was found one month after termination of this pregnancy. Chemotherapy with a single agent (methotrexate) was given. The patient is doing well and has no evidence of recurrence after one year of follow-up.
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PMID:Twin pregnancy with hydatidiform mole (46, XX) and a coexistent fetus (46, XY): report of a case. 791 78

For centuries, physicians have attempted to use the urine for noninvasive assessment of disease. Today, urinalysis, in particular the measurement of proteinuria, underpins the routine assessment of patients with renal disease. More sophisticated methods for assessing specific urinary protein losses have emerged; however, albumin is still the principal urinary protein measured. Changes in the pattern of urinary protein excretion are not necessarily restricted to nephrourological disease; for instance, the appearance of beta-human chorionic gonadotropin in the urine of pregnant women is the basis for all commercially available pregnancy kits. Similarly, microalbuminuria is a clinically important marker not only of early diabetic nephropathy but also of concomitant cardiovascular disease. With the emergence of newer technologies, in particular mass spectrometry, it has become possible to study urinary protein excretion in even more detail. A variety of techniques have been used both to characterize the normal complement of urinary proteins and also to identify proteins and peptides that may facilitate earlier detection of disease, improve assessment of prognosis and allow closer monitoring of response to therapy. Such proteomics-based approaches hold great promise as the basis for new diagnostic tests and as the means to better understand disease pathogenesis. In this review, we summarize the currently available methods for urinary protein analysis and describe the newer approaches being taken to identify urinary biomarkers.
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PMID:Urine proteomics: the present and future of measuring urinary protein components in disease. 1769 25

Altered levels of pregnancy hormones have been suggested to initiate testicular cancer prenatally in the male fetus. The placenta is the main source of pregnancy hormones, and pregnancy hypertension and preeclampsia are associated with placental malfunction, including altered levels of hormones such as estrogen and human chorionic gonadotropin. We therefore evaluated fetal exposure to pregnancy hypertension and preeclampsia in relation to risk of testicular cancer in adolescent and adult life. We identified 293 cases of germ cell testicular cancer in the Swedish Cancer Register, and 861 controls in the Swedish Medical Birth Register. The standardized antenatal and delivery charts of the cases and controls were traced in the archives of the delivery units, and information about maternal and pregnancy characteristics such as gestational hypertension, proteinuria, anemia, and glucosuria were extracted. Odds ratios (OR) with 95% confidence intervals (CI) were calculated using conditional logistic regression. We found a strongly decreased risk of testicular cancer among subjects exposed to severe gestational hypertension (OR, 0.29; 95% CI, 0.12-0.74, compared with no hypertension), whereas the risk was increased among those exposed to mild gestational hypertension (OR, 1.62; 95% CI, 0.98-2.69) during the fetal period. The mechanism behind the association between pregnancy hypertension and testicular cancer is unclear, but our findings may reflect a potentially protective effect of the altered pregnancy hormones such as human chorionic gonadotropin that occur in severe gestational hypertension and preeclampsia.
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PMID:Gestational hypertension, preeclampsia, and risk of testicular cancer. 1897 26


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