The relationship between serum zinc level serum alkaline phosphatase activity and haemoglobin concentration in sickle cell children.
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Adolescent↗
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Results for “Serum Zinc Level”
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The relationship between marginal bone loss and serum zinc levels.
Serum was analyzed for zinc in 51 patients of varying age and with varying degrees of alveolar bone loss as recorded on roentgenograms. There was a reversed correlation between marginal alveolar bone loss and serum zinc levels. The observations are discussed in relation to the physiological functions of zinc.
Adult↗
Study of serum zinc level in leprosy.
Serum Zinc level was estimated in different types of leprosy by 'Dithiazone extraction' method in 75 leprosy patients comprising 15 each of Tuberculoid-Tuberculoid (TT); Borderline Tuberculoid (BT); Borderline Borderline (BB); Borderline Lepromatous (BL) and Lepromatous Lepromatous (LL). These findings were evaluated in comparison to 15 normal subjects serving as controls. Serum zinc level was observed to be significantly low in all types of leprosy except tuberculoid leprosy (TT). No significant difference was observed in serum zinc levels before and after 90 days of dapsone Therapy. The findings of our study are of considerable importance as zinc deficiency can be one of the factors involved in non-specific suppression of cell mediated Immunity (CMI) in lepromatous leprosy.
Adult↗
A prospective survey of serial maternal serum zinc levels and pregnancy outcome.
Serum zinc levels were monitored serially in pregnant women. Compared with those of age-matched nonpregnant women, their serum zinc levels were significantly decreased in the first trimester (p less than 0.005) and further decreased in the second trimester (p less than 0.005) but then remained unchanged until delivery. Cord blood zinc levels and the ratio of cord blood to maternal serum zinc at delivery were significantly higher in preterm than term (greater than or equal to 37 weeks) infants (p less than 0.05, p less than 0.05). The maternal serum zinc level in the second trimester was not related to the birth weights of the infants. Mothers with serum zinc levels of less than 65 micrograms/dl in the last trimester showed a higher incidence of birth weights of less than the 50th percentile (p less than 0.005) and also of less than the 25th percentile (p less than 0.005) on term delivery. The incidences of birth weights of less than the 10th percentile on term delivery were similar for mothers with serum zinc levels of greater than or equal to 65 micrograms/dl. This observation suggested that a relatively lower birth weight may be associated with lower maternal serum zinc levels in the third trimester, but an additional factor (factors) is also involved in the outcome of low birth weight infants.
Birth Weight↗
Serum zinc levels in diabetic patients and effect of zinc supplementation on glycemic control of type 2 diabetics.
OBJECTIVE: The present study is an attempt to assess serum zinc level in a sample of diabetic patients (both type 1 and type 2 diabetics) in comparison with those of apparently healthy controls, and to ascertain the relationship between the levels of serum zinc with some epidemiological variables. Furthermore, a trial of zinc supplementation for 3 months conducted to assess the effect of zinc supplementation on glycemic control of the studied type 2 diabetic patients, and the factors that affect the response to this supplementation. METHODS: Collection of data was carried out during the period between November 2002 to February 2003 at the Diabetic Center of Merjan Teaching Hospital in Babil Governorate, Iraq. In the first part of the study (a case-control study), the diabetic group included 133 diabetic patients (type 1 and 2) who were chosen from patients attending the Diabetic Center during the period of the study. The control group included 133 apparently healthy subjects who were selected from the workers of the same hospital. Selection of cases and controls was carried out by using systematic random sampling procedure. In the second part of the study (single blind were intervention study), type 2 diabetic patients (101 patients) divided into 2 groups; the first group included 50 patients supplemented with oral zinc sulfate (30 mg of elemental zinc/cap/day) for 3 months and second group included 51 patients given placebo and designed as control group. RESULTS: The first part of the study shows that the mean value for serum zinc level was significantly lower in diabetic patients than healthy controls (64.2 +/- 12.6 microg/dl for type 1 diabetics, and 68.9 +/- 11.9 microg/dl for type 2 diabetics versus 83.4 +/- 12.5 microg/dl for healthy controls). Using simple linear regression, significant positive correlation was found between serum zinc level and years of education and significant negative correlation was found between serum zinc level and baseline HbA1c% value, in the diabetic group. While significant positive correlation found between serum zinc level and estimated zinc intake in the control group. Using multiple regression analysis, serum zinc level showed significant positive correlation with gender (being a male compared with female), and estimated zinc intake and significant negative correlation with diabetes state (diabetic compared with non-diabetic), residence (urban compared with rural residents), and plant protein intake. The second part of the study shows that the mean value for HbA1c% concentration of the supplemented group decreased significantly at the end of the 3 months of follow up, while no significant changes were found in the mean value for HbA1c% of the control group. The present study showed that the change in HbA1c% after supplementation had significant negative correlation with baseline HbA1c% value. CONCLUSION: Diabetic patients have significantly lower mean serum zinc levels compared with healthy controls. Zinc supplementation for type-2 diabetics has beneficial effects in elevating their serum zinc level, and in improving their glycemic control that is shown by decreasing their HbA1c% concentration.
Adult↗
Reduced serum zinc levels and oral zinc supplementation in geriatric patients.
Serum Zinc levels have been measured in 15 male and 64 female patients admitted to geriatric wards from home or other hospital wards. There was no significant difference between the zinc levels in the two sexes. The zinc concentrations were significantly lower in the geriatric patients than in adult patients whose serum zinc levels were measured by the same method. Levels for serum zinc did not differ significantly between the patients who had previously been receiving hospital diets in other hospital wards, and the patients admitted directly from home who had been receiving less nutritious domestic diets. Oral supplementation with zinc salts resulted in a variable response in serum zinc. It is concluded that the low serum zinc concentrations found in geriatric patients are attributable to abnormal cell metabolisms in individual patients rather than to deficient dietary intake of zinc.
Administration, Oral↗
Serum zinc levels are increased in melanoma patients.
We studied the levels of serum copper and zinc as possible diagnostic factors or markers for the early detection of patients with melanoma. Levels were determined in 35 melanoma patients at various clinical stages and in 39 healthy persons. Measurements were performed by atomic absorption spectroscopy using 5100-PC-Perkin-Elmer equipment. We found that serum copper levels were very similar in the melanoma patients and the healthy individuals, the medium values being 118.32 +/- 25.32 micrograms/dl and 117.94 +/- 28.01 micrograms/dl, respectively. Therefore, no significant differences were observed with regard to copper levels. On the other hand, we obtained a medium value of 82.32 +/- 25.38 micrograms/dl for serum zinc levels in the melanoma patients and 56.72 +/- 11.79 micrograms/dl in the healthy persons, which represents a very significant increase in the serum levels of zinc in melanoma patients (P < 0.0001). A receiver operating characteristic (ROC) curve statistical analysis was also performed; the cut-off value obtained was 60.9 micrograms/dl. According to our results, zinc is increased in 86.5% of melanoma patients. Although further investigations are needed to assess its value in prognosis and follow-up, evaluation of serum zinc level could be a good tool to check for the presence of melanoma.
Biomarkers, Tumor↗
Serum zinc levels in subtypes of leprosy.
Serum zinc levels were estimated in 146 patients with different types of leprosy and 40 control subjects. Tuberculoid patients were found to have normal serum zinc levels. A gradual reduction in serum zinc levels was observed from TT to LL. Serum zinc levels were not significantly higher in patients treated with dapsone for approximately 18 months. The cause of hypozincemia is not clear, but the findings suggest that there are correlations among bacillary load, immune status, and serum zinc. Zinc deficiency could be one of the factors involved in the nonspecific suppression of cell-mediated immunity in lepromatous leprosy.
Adolescent↗
Serum zinc level : a possible index in the pathogenesis of peptic ulcer syndrome.
The present investigation shows a possible correlation between serum zinc level and peptic ulcer disease/syndrome and a plausible mechanism for the finding. Clinicopathological study of patients with peptic ulcer diseases followed by confirmed endoscopic findings shows a significant low serum zinc level, 0.846 +/- 0.15 ug/ ml +/- S.D. (P < 0.001) with an exception of approx. 10% of the patients. To understand the cellular mechanism of low zinc levels in serum, tissue zinc content of gastric mucosa was determined. A significant increased value (P < 0.01) of zinc content in gastric mucosa of patients with peptic ulcer diathesis was noted. Carbonic anhydrase, a major zinc containing enzyme was also determined in erythrocytes. However, no change of erythrocyte carbonic anhydrase content was noted. To assess the nutritional status of the patients in relation to the low serum zinc value, serum albumin level was also determined. The low serum zinc level of the peptic ulcer patients is possibly due to the positive shift for the zinc from serum to the gastric mucosa.
Carbonic Anhydrases↗
Serum zinc levels in retinitis pigmentosa.
Serum zinc and copper levels were analyzed in 26 retinitis pigmentosa patients and compared with serum zinc levels of a control group. Serum zinc levels were documented to be decreased with a mean concentration of 0.735 +/- 0.167 micrograms/ml (p less than 0.001). Serum copper levels, on the other hand, were found to be increased in retinitis pigmentosa patients with a mean value of 1.261 +/- 0.348 micrograms/ml (p less than 0.001).
Adolescent↗
[Changes in serum zinc level of periodontitis with kidney deficiency].
The study is to explore the possible relationship between the level of trace element zinc in serum and periodontitis with Kidney deficiency. The level of serum zinc in 40 cases of periodontitis and in 19 normal controls was examined by atomic absorption spectrum analysis. The results indicated that there was only a descending trend of serum zinc in periodontitis group as compared with normal group. But further analysis revealed that according to the severity of periodontitis and the theory of Syndrome differentiation in TCM, it showed that the drop of serum zinc had not only a negative correlation with the severity of periodontitis, but also was co-related to whether there was Kidney deficiency or not. Serum zinc of periodontitis with Kidney Deficiency group was significantly lower than that of normal control group as well as the group of periodontitis without Kidney deficiency (P < 0.05). The data suggested that the decline of serum zinc level is closely related to the occurring and development of periodontitis with Kidney Deficiency.
Adolescent↗
Zinc uptake by human placental microvillous membrane vesicles: effects of gestational age and maternal serum zinc levels.
Zinc uptake by syncytiotrophoblast microvillous membrane vesicles (SMMV) from human placentas was characterized and the effects of maternal serum zinc levels at term and of gestational age on kinetic parameters were evaluated. Zinc uptake at pH 7.2 was rapid for the first 2 min, followed by a slower increase, approaching equilibrium after 30 min. Uptake was saturable at a zinc concentration of 30 micromol/L, higher than the upper range of the physiological serum zinc level. Kinetic analysis of uptake at 1 min in SMMV from term placenta showed similar Km values (mean: 6.9+/-0.6 micromol/L) for different levels of maternal serum zinc. However, Vmax was higher (p < 0.05) in SMMV from mothers with serum zinc lower than 7.6 micromol/L compared to those with higher serum zinc levels (35.8+/-1.6 and 26.6+/-1.6 nmol 65Zn/mg protein/min, respectively). Km values were similar in term (>37 wk of gestation) and preterm (20-25 wk of gestation) placentas, whereas Vmax was higher (p < 0.05) in the preterm (34.3+/-1.6 nmol Zn/mg protein/min) compared to term placentas from mothers with serum zinc levels above 7.6 micromol/L. These results suggest that whereas afffinity for zinc was not altered with gestational age or maternal serum zinc levels, zinc-uptake capacity in human placenta is influenced both by gestational age and by low levels of maternal serum zinc in order to ensure an adequate maternal-fetal zinc transfer.
Adult↗
[Behavior of serum zinc levels during pregnancy].
The zinc intervenes in the growth and development, being of vital importance in the pregnancy. In order to determine the behavior of the serum zinc levels during the pregnancy associating it to the anthropometric nutritional status and dietary intake, 108 pregnants were assessed longitudinally, between March 1998 and December 1999, in the 12, 22 and 33 week pregnancy. Anthropometric parameters, serum zinc and albumin, and dietary intake of energy, proteins, zinc and fiber were determined. Descriptive standards and frequencies were calculated and Student's t test, Wilcoxon signed rank test, one-way analysis of variance and Pearson correlation test were made. Significant decrease of the serum zinc and albumin was observed during the gestation. The serum zinc levels in the first trimester differed significantly according to intake of oligoelement. In the second trimester, zinc concentrations differed significantly according to maternal age and weight gain, while no significant differences were found by parity, pregestational body mass index, height-for-age in none of the trimesters. Changes in the serum zinc concentrations are confirmed throughout the pregnancy, these modifications are explained partially by the decrease of serum albumin. Serum levels of zinc during gestation do not depend of parity or pregestational anthropometric nutritional status.
Adolescent↗
Urinary and serum zinc levels in chronic pancreatitis.
Urinary and serum zinc levels were determined in 51 patients with chronic pancreatitis. Urinary zinc excretion in patients with chronic calcified pancreatitis (832 +/- 111 micrograms/day) (mean +/- SE) but not in noncalcified pancreatitis (684 +/- 65 micrograms/day) was significantly higher than in normal controls (418 +/- 46 micrograms/day). The urinary zinc excretion increased with deterioration of exocrine pancreatic function. Serum zinc levels in advanced pancreatitis (105.9 +/- 4.5 micrograms/100 ml) were significantly higher when compared to the pancreatitis with normal exocrine pancreatic function (91.6 +/- 3.0 micrograms/100 ml), but the difference was less pronounced than for urinary zinc excretion. This may be due to complicating diabetes, which usually lowers serum zinc. Serum zinc and urinary zinc excretion were low in a patient with chronic calcified pancreatitis complicated with a pulmonary abscess and hypoalbuminemia. In conclusion, urinary and serum zinc levels in chronic pancreatitis were increased as a result of exocrine pancreatic dysfunction. Association of diabetes may lower serum zinc, and associated malnutrition depresses both urinary and serum zinc levels.
Adult↗
Serum zinc levels in lung cancer patients.
Serum zinc concentrations were determined in 26 extensive squamous cell lung cancer patients and were tested for correlations with survival, response to therapy, nutritional status indices, and various host defense characteristics. Subnormal serum zinc levels were found in 24 of the 26 patients. The mean serum zinc concentration was 43.2/micrograms 100 ml +/- 3.6 S.E.M. (normal = 80-100 micrograms/100 ml). A significant (P = 0.007) survival advantage was demonstrated for those patients with pretreatment zinc concentrations greater than 45 micrograms%, but serum zinc levels did not correlate with response to chemotherapy (also significantly affecting survival). Decreased serum zinc concentrations were significantly associated with decreased neutrophil migration measured by the skin window technique and with decreased triceps skin fold thickness but not with any of the other host defense and nutritional induces measured. These data suggest that further studies are indicated to examine the role of serum zinc concentration as a possible sensitive prognostic characteristic and to determine if zinc administration may be of therapeutic benefit in cancer patients.
Adult↗
The relationship between maternal serum zinc levels during pregnancy and birthweight.
A retrospective follow-up study to ascertain the relationship between the level of serum zinc and its rate of change during gestation and birthweight was conducted in 476 women of lower socioeconomic status. Serum zinc concentrations measured at approximately 16 (early) and 32 weeks (later) in gestation were both found to be significant predictors of birthweight. Even after controlling for gestational age at birth and other determinants of birthweight, for each microgram/dl increase in serum zinc early and later in pregnancy, birthweight increased by 5.8 and 8.6 g, respectively. Furthermore, after adjustment for initial zinc levels both the total change (beta = -7.0, P = 0.0007) and the rate of change (beta = -60.8, P = 0.007) in serum zinc during pregnancy were inversely associated with birthweight, i.e., the larger the fall in serum zinc during pregnancy, the smaller the infant. Low serum zinc level (less than 60 micrograms/dl) late in pregnancy was associated with greater than a five-fold increase in the odds (OR = 5.8, 95% CI = 1.8, 16.4) of giving birth to a low birthweight infant. The results of this study suggest a threshold for maternal serum zinc below which the prevalence of low birthweight increases rapidly.
Adolescent↗
Influence of zinc-ligand mixtures on serum zinc levels in rats.
The influence of various salts, chelates, and other complexes of zinc given by gavage on serum zinc levels in rats was studied. Serum zinc concentrations were determined over 6 hr after administration of zinc sulfate at doses of 5, 10, 20, 50, and 100 mg of zinc/kg. Serum zinc levels following doses of zinc salts and complexes were compared with those after zinc sulfate. Phytic acid, aminopolycarboxylic acids (including edetate disodium), and penicillamine significantly suppressed increases in serum zinc concentration. Some natural amino acid-zinc sulfate mixtures (those with lysine, cysteine, glycine, and histidine) produced greater levels than the equivalent dose of zinc sulfate alone. Several thiocarboxylic acids, such as mercaptoacetic acid and thiosalicylic acid, also increased serum zinc concentrations. These observations form a basis for attempted modification of zinc absorption in other species.
Animals↗
A study of serum zinc levels in cord blood of neonates and their mothers.
Serum zinc was estimated in the cord blood of 60 neonates of different gestational age and birth weight, and their mothers. Mean serum zinc levels in neonates FTGA, PTAGA and term SGA were 128.88 +/- 14.37, 94.32 +/- 17.79 and 111.8 +/- 9.2 ug/dl respectively. The maternal serum zinc levels in corresponding groups was 96.28 +/- 19.48, 115.44 +/- 15.41 and 93.8 +/- 7.62 ug/dl. Thus mean serum zinc level in cord blood of FT AGA newborns was significantly higher than that in PT AGA and FT SGA. Mean serum zinc level in mothers of FT AGA was significantly lower than that in mothers of PT AGA. However, there was no significant difference between the maternal serum zinc levels of FT AGA and FT SGAs. There was positive correlation between gestational age and serum zinc level in cord blood of AGAs while correlation was negative in case of their mothers. There was positive correlation between weight (keeping gestational age constant) and serum zinc level in case of neonates while corresponding maternal zinc levels did not vary. (FT AGA and FT SGA).
Birth Weight↗