Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

During a retrospective study of 100 patients who underwent renal biopsy because of pregnancy complicated by hypertension, we found 19 patients whom proteinuria exceeded 5.0 Gm. per 24 hours and an additional eight patients in whom excretion ranged between 3.5 and 5 Gm. per day. Of these 27 patients, 23 had the kidney lesion of pre-eclampsia, and three of them had superimposed hypertensive changes in the vasculature. The remaining four had other renal diseases. We located and re-examined 10 of the 23 pre-eclamptic women, 12 to 104 (mean, 36) months after delivery. Serum creatinine levels were normal in all but one, who was discovered to have polycystic kidney disease. During the same time period, we located the records of six women who had heavy proteinuria during gestation but were normotensive. Thus, at our institution, pre-eclampsia is the most common cause of the nephrotic syndrome in pregnancy. The frequency of nephrotic proteinuria in pre-eclampsia appears higher than previously suspected, but, despite this fact, recovery was complete in most instances.
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PMID:Nephrotic proteinuria with pre-eclampsia. 92 Jul 65

This is a study of heat-stable alkaline phosphatase (HSAP65degreesC) concentrations in the serum of pregnant women with hypertension (42 cases), mild preeclampsia (40 cases) and severe pre-eclampsia (22 cases). The results are seen in relationship to the occurrence of intrauterine fetal death, growth retardation, intrauterine and neonatal asphyxia as well as the respiratory distress syndrome (RDS) in the newborn. The importance of a precise clinical classification of the patients is stressed. Pathological HSAP values are those which lie either over or under the normal range for HSAP activity. In addition "zig-zag" curves with values within the normal range are characterized as abnormal. Thus, serial estimations give the most reliable results. Serial estimations of HSAP are especially valuable in severe pre-eclampsia. Abnormal HSAP values in the 28th-38th week of pregnancy are a serious prognostic sign. False abnormal HSAP results were found in all 3 patient groups. One possible false normal HSAP curve also occurred.
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PMID:Serum alkaline phosphatase in pregnancy. II. Serial HSAP65degreesC estimations in pregnancy complicated with hypertension and pre-eclampsia. 93 83

Data on the outcome of pregnancy are based upon a prospective study of 14,833 single births to women whose blood pressures during the fifth and sixth months of gestation were recorded. With each 5 mm, Hg rise in the mean arterial pressure (MAP) there is a progressive increase in the perinatal mortality rate. At each MAP level, the stillbirth rates and neonatal mortality rates are higher in blacks than in whites. When middle-trimester MAP is 90 mm. Hg or more, there is a significant increase in (1) the stillbirth rate, (2) the frequency of proteinuria, hypertension, and diagnosed pre-eclampsia in the third trimester, and (3) the frequency of intrauterine fetal growth retardation. We believe that all of these events are due to an impaired uteroplacental circulation, with which elevated blood pressures are associated. Women who have an average MAP of 90 or more during the fifth and sixth months should be considered in a high-risk category.
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PMID:The impact of mean arterial pressure in the middle trimester upon the outcome of pregnancy. 93 99

No differences were found at the 30th week of pregnancy in total body water, serum sodium, potassium, chloride and osmolality, plasma volume, total protein concentration, intravascular protein mass, serum albumin concentration, intravascular albumin mass, and urinary estriol and pregnanediol in 94 primigravidae who remained normotensive, 35 who developed mild preeclampsia, and 23 who developed severe preeclampsia (i.e. hypertension and significant proteinuria in the third trimester). In twin pregnancies no differences were found between 13 primigravidae who remained normotensive and nine who subsequently developed proteinuria and hypertension.
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PMID:Changes preceding the development of preeclamptic toxemia. 95 65

832 estimations of heat stable alkaline phosphatase (HSAP) and of heat alkaline phosphatase (HLAP) were carried out simultaneously in late pregnant women at 25th to the 42nd weeks of pregnancy. 147 of them delivered children with normal birth-weight. All these women suffered from pre-eclampsia, hypertension or any kind of superimposed pre-eclampsia. 110 other pregnant women with or without symptoms of pre-eclampsia gave birth to small for dates babies. In addition, the values of these patients were compared with 372 estimations of the same enzymes carried out in 120 patients with normal pregnancy and outcome of normal weighted children. The site of the values of every group showed no typical correlation to the course and outcome of their pregnancy. Regarding four special criterions it was possible to give a good prediction by serial determinations for the weight of the newborn in 80 per cent of the cases. A correlation between the urinary excretion of total oestrogens as well as HLAP and the values of HSAP was to be found only in some groups of patients.
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PMID:[Behavior of serum alkaline during pregnancy. II. Pathological pregnancy]. 96 Nov 83

Abnormal pregnancies (33 per cent) were studied in 417 consecutive, unmarried, primiparous women, age 12 to 18 years (black, 54 per cent; white, 46 per cent). Black patients had no increase in abnormal pregnancies but had more infants weighting less than 2,500 grams (p less than 0.01). Black patients with pre-eclampsia gained less weight than white patients (24 versus 34 pounds, p less than 0.05) and had smaller infants (2,834 versus 3,316 grams). In white patients, the mean age at menarche was earlier in women who lost their infants (11.0 versus 12.7 years; p less than 0.01). Smoking was more prevalent in normal pregnancies (47 per cent) than abnormal pregnancies (38 per cent). Spontaneous abortion and fetal loss occurred more often in smokers (p less than 0.01). White women smoked more than blacks (60 versus 37 per cent). In mothers of infants weighting less than 2,500 grams, there were fewer smokers. Unexpectedly, smokers had less hypertension and pre-eclampsia. Human chorionic somatomammotropin values correlated with infant size. Levels of less than 4 mug per milliliter after 30 weeks' gestation were identical in normal and abnormal pregnancies (4.4 per cent). They were associated with small infants but no fetal deaths and did not predict outcome of pregnancy.
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PMID:Abnormal adolescent primiparous pregnancy: association of race, human chorionic somatomammotropin production, and smoking. 96 62

A total of 99 patients with pre-eclampsia and proteinuria were managed conservatively between 30 and 37 weeks of gestation, based on serial urinary estriol, liquor amnii, and renal function studies. The over-all perinatal wastage was 14 per cent, but was 35 per cent in association with subnormal estriol excretion and oligohydramnios (less than 250 ml.). In severe pre-eclampsia (blood pressure greater than 170/110 mm. Hg with proteinuria greater than 5 Gm. per liter) the incidence of subnormal estriol was 73 per cent and, becuase of this and the associated maternal hazards, conservative treatment had little place. However, in less severe pre-eclampsia with proteinuria early in the third trimester, this prospective study, based on serial placental and renal function tests, showed that frequently the pregnancy could be prolonged and fetal losses due to prematurity avoided. It should be stressed that such conservative treatment should not be continued when there are strong clinical contraindications. Irrespective of the severity of the prior pre-eclampsia, it was unusual for patients to show residual hypertension, proteinuria, or abnormal pyelography at their postnatal examination. Postpartum renal biopsy showed either normal histology or regression of the classical glomerular lesion in 77 per cent of cases.
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PMID:Placental function and renal tract studies in pre-eclampsia with proteinuria and long-term maternal consequences. 98 68

Several methods were used in an attempt to produce preeclampsia in the pregnant rat. Desoxycorticosterone acetate plus increased NaCl intake produced hypertension, proteinuria, rapid weight gain, convulsions, decreased litter size, decreased offspring weight, increased fetal and maternal mortality, and renal lesions similar to those seen in human preeclampsia. Injection of placenta in Freund's adjuvant produced mild blood pressure elevation and proteinuria in the pregnant rat. Rabbit antirat placenta serum produced hypertension in the pregnant rat but not in the nonpregnant rat. Liver congestion and renal glomerular congestion were observed in both pregnant and non-pregnant rats. Pregnancy in the rat reduced hypertension produced by applying a Goldblatt clamp prior to breeding. Uterine ischemia produced by wrapping the uterus in cellophane produced mild blood pressure elevation and proteinuria. A vitamin-E-deficient diet that contained substantial amounts of partially perioxidized, polyunsaturated fatty acids produced morphological lesions in the pregnant rat similar to those seen in human preeclampsia, but hypertension, edema, and proteinuria were absent. None of the maneuvers was effective in producing a complete model of human preeclampsia, but they do provide material for study that could answer somebasic questions about preeclampsia.
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PMID:The rat as a model for preeclampsia. 100 52

Several clinical situations are strongly suggestive that estrogens are diuretic substances that secondarily promote sodium and water retention in the body by stimulation of adreno-cortical hormone secretion. To investigate the direct action of estradiol on diuresis, the hormone was administered to the isolated, perfused rabbit kidney. Results demonstrated that estradiol increases urine volume, tubular sodium excretion and potassium reabsorption, and diminishes arterial pressure and renovascular resistance. The possible relationships between these effects and with pre-menstrual syndrome, pre-eclampsia, and menopausal hypertension are discussed.
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PMID:Diuretic action of estradiol. 102 80

The excretion of estriol into the maternal urine is an effective means of evaluating the fetus in pregnancies complicated by a number of metabolic disorders, such as chronic hypertension, renal disease, pre-eclampsia, etc. It is generally used in the management of pregnancies complicated by maternal diabetes mellitus even though some question has been raised as to its validity for this disorder. In this study we have evaluated estriol precursors in the form of 17-ketosteroids in the urine of pregnant women with mild diabetes mellitus as well as a non-diabetic control group. Urinary total estrogen excretion was also determined. Diabetics were found to excrete significantly higher amounts of 17-ketosteroids than the non-diabetic group. The possible significance of this finding in relation to the dynamics of estriol production in pregnancy is discussed.
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PMID:Urinary 17-ketosteroids in diabetic and non-diabetic pregnancies. 102 54


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