scholarly journals Calcemia, Vitamin D and seasonal influences in preeclampsia in Goma

2022 ◽  
Vol 10 (1) ◽  
pp. 011-022
Author(s):  
Richard Kabuyanga Kabuseba ◽  
Pierrot Lundimu Tugirimana ◽  
Jean Pierre Elongi Moyene ◽  
Xavier Kinenkinda Kalume ◽  
Jean-Baptiste Kakoma Sakatolo Zambèze
Keyword(s):  
Blood Pressure ◽  
Vitamin D ◽  
Pregnant Women ◽  
Serum Calcium ◽  
Negative Correlation ◽  
Rainy Season ◽  
Case Control ◽  
Dry Season ◽  
Blood Calcium ◽  
Vitamin D Levels

Background: The etiology of preeclampsia remains less well known. It is noted that low vitamin D levels are associated with a high risk of preeclampsia (PE). Calcium (Ca2+) levels during pregnancy appear to be involved in pregnancy-induced hypertension. Recent studies indicate that serum calcium levels may have a role in preeclampsia. Vitamin D promotes absorption of proper concentration of calcium in the blood which helps to lower blood pressure. The complications associated with calcium deficiency during a normal pregnancy are numerous and have not been extensively studied in Goma. Objective: To assess blood calcium levels (ionic and total) in preeclamptic women and to analyse the seasonal influence on preeclampsia in Goma. Method: A prospective case-control study (without matching) of 190 pregnant women without cardiovascular or endocrine diseases for a case-control ratio of 1∶1 was conducted in six hospitals in Goma. Blood ionogram was performed by an automated system directly after blood sampling and vitamin D was measured using enzyme-linked immunosorbent method. Results: The mean ionised calcium level in preeclamptic woman was 1.24±0.16 mmol/L (0.48-1.59) compared to 1.27±0.17 mmol/L (0.88-2.30) in normal pregnant woman (p=0.214). A slight negative correlation between blood calcium and blood pressure was observed in pregnant women. Low vitamin D levels were associated with preeclampsia. Hypovitaminosis D in the preeclamptic group was more observed during the rainy season than during the dry season. Pregnancies complicated by PE were from fertilisations occurring during the rainy season while the dry season was characterised by a high admission of preeclamptics. Conclusion: The study found that preeclamptic women in Goma had hypocalcemia. There was also a weak negative correlation between blood pressure and serum calcium levels. The majority of preeclamptics were diagnosed during the dry season, while conception with a PE complication occurred during the rainy season. As this is a first study in this area for the Great Lakes region of Africa, a more in-depth study with a larger sample size is desired.

scholarly journals The relationship between vitamin D levels and plasma renin activity in patients with arterial hypertension

2017 ◽  
Vol 95 (9) ◽  
pp. 803-809
Author(s):  
Lyudmila V. Yankovskaya ◽  
V. A. Snezhitskiy ◽  
V. I. Novogran
Keyword(s):  
Vitamin D ◽  
Plasma Renin Activity ◽  
Arterial Hypertension ◽  
Negative Correlation ◽  
Plasma Renin ◽  
Left Ventricular ◽  
Renin Activity ◽  
Left Ventricular Ejection ◽  
Blood Calcium ◽  
Vitamin D Levels

The aim of the study was to evaluate plasma renin activity (PRA) and its relationship with the level of 25-hydroxyvitamin D (25 (OH) D) in the blood in patients with stage II arterial hypertension (AH). We examined 228 patients (186 women and 42 men, mean age 52,4 ± 7,6 years). They were divided into two groups, one (n = 51) with optimal vitamin D levels (25 (OH) D ≥30 ng/ml), the other (n = 177) with D-hypovitaminosis (25 (OH) D <30 ng/ml). In this group, PRA (0,88 [0,61, 1,80] ng/ml/h) and the level of parathyroid hormone (38.6 [26.3; 52.1] pg/ ml) were higher (p <0,05), than in the former group (0,56 [0,38; 1,09] ng/ml/h and 29.8 [21.6; 44.1] pg/ml respectively). In group 2, the nitrate/nitrite level (18,57 ± 6,56 µmol/l) and blood calcium (2,34 ± 0,15 mmol/l) were lower (p <0.05) than in group 1 (21,57 ± 6,92 µmol/l and 2.40 ± 0.18 mmol/l respectively). No significant differences in results of echocardiography between the groups was apparent. We documented negative correlation between PRA and serum 25(OH)D level. PRA showed weak negative correlation with endothelium-dependent vasodilation (R = -0,15; p = 0,05); this relationship became even more evident (R = -0,24; p = 0.007) in patients with D-hypovitaminosis but was insignificant in those having the optimal level of vitamin D. It suggests the influence of vitamin D on vascular endothelial function and PRA interaction with endothelium. PRA shows positive correlation with the left ventricular wall thickness, left ventricular myocardial mass and negative correlation with the left ventricular ejection fraction, both being more pronounced in patients with D-hypovitaminosis and reflecting the influence of PRA on the structural and functional state of the myocardium.

scholarly journals Relationship between Serum 25(OH)D Levels and Blood Pressure in Children with Nephrotic Syndrome

2021 ◽  
Vol 9 (B) ◽  
pp. 260-264
Author(s):  
Rosmayanti Syafriani Siregar ◽  
Oke Rina Ramayani ◽  
Winson Chitra ◽  
Rafita Ramayati
Keyword(s):  
Blood Pressure ◽  
Vitamin D ◽  
Nephrotic Syndrome ◽  
Diastolic Blood Pressure ◽  
Negative Correlation ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Severe Deficiency ◽  
Vitamin D Levels ◽  
Weak Negative Correlation

BACKGROUND: Vitamin D plays an eminent role in the renin-angiotensin system that may interfere with blood pressure regulation. Children with nephrotic syndrome (NS) are often observed with low serum vitamin D levels that may lead to Vitamin D deficiency status. AIM: This study aimed to investigate the correlation between serum vitamin D [25(OH)D] levels and blood pressure in children with NS. METHODS: A cross-sectional, observational analytic study was conducted in 35 children NS with minimal change diseases from February to August 2019 in Haji Adam Malik General Hospital, Medan. Blood pressure was examined and serum Vitamin D levels along with serum creatinine, albumin, and calcium were measured. RESULTS: Of 35 children, 21 children (60%) had proteinuria. Regarding the category of Vitamin D status, there were 40% and 34.3% with deficiency and severe deficiency of Vitamin D, respectively. The median serum Vitamin D levels were not significantly different among the age group. Children with proteinuria showed lower serum Vitamin D levels (P < 0.001). There was an elevation of systolic and diastolic blood pressure in children with proteinuria (P = 0.039 and P = 0.036, respectively). Our study showed a weak negative correlation between serum Vitamin D levels and either systolic or diastolic blood pressure (r-0.114 and r-0.174, respectively). CONCLUSION: Both Vitamin D deficiency and severe deficiency are common in children with NS. In this study, serum Vitamin D levels have been shown to have a weak negative correlation with blood pressure in children with NS.

scholarly journals Vitamin D status and its correlation with blood pressure in premenopausal Saudi women: a cross-sectional study.

2016 ◽  
Vol 9 (1) ◽  
Author(s):  
Sarah Al Mazeedi ◽  
Hanan Al Kadi ◽  
Mohammed Ardawi
Keyword(s):  
Blood Pressure ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Negative Correlation ◽  
Study Group ◽  
Saudi Population ◽  
Vitamin D Status ◽  
Major Health Problem ◽  
Vitamin D Levels ◽  
Blood Pressures

Vitamin D deficiency is a major health problem in the Saudi population. A negative association between blood pressure and vitamin D level has been suggested in several clinical and epidemiological studies and evidence for an effect of vitamin D in lowering blood pressure was reported. These findings indicate that 1,25(OH)2D3 deficiency may play a role in the pathogenesis of hypertension through its effect on the renin-angiotensin system. We are the first to investigate the correlation between blood pressure or renin concentration and vitamin D status in the Saudi population METHODS: we included 201 healthy Saudi premenopausal females (20-45 years old). Blood pressure was measured by a standardized method using an automated blood pressure monitor (BPTru). Fasting blood samples were collected from each participant after 20 minutes of rest in the seated position. Serum cholicalciferol, PTH and renin concentration were measured by sandwich chemiluminescence immunoassaymethod (DiaSorin, Italy). RESULTS: The analysis included 192 subjects who were normotensive (blood pressure <140/90 mmHg).  A total of  34% of women had a severe deficiency (vitamin D ≤ 12.5 nmol/L); 41% had moderate deficiency (vitamin D levels between 12.5 - 25 nmol/L);  23% had mild deficiency (vitamin D level ≥ 25 - < 50 nmol/L); and 2% had insufficiency (vitamin D level  ≥ 50 - ≤ 75 nmol/L). None had a sufficient level of ≥75 nmol/L.  The systolic blood pressure ranged from 79-130.5mmHg and the diastolic from 48.5-85.5 mmHg.  Both systolic and diastolic blood pressures were significantly higher in women that were in the lower 2 quartiles of vitamin D.  However, linear regression analysis adjusting for potential confounders showed that 25(OH)D level was not a predictor of either systolic or diastolic blood pressures.  A negative correlation (although not significant) was found between vitamin D level and plasma renin concentration in this study group. CONCLUSION: Vitamin D deficiency was highly prevalent among the study group. Vitamin D was a not a predictor of either systolic or diastolic blood pressure.  There was a negative correlation between vitamin D level and renin concentration although not statically significant. It is possible that any underlying relationship was obscured by the relatively young age group or due to the narrow blood pressure range of the studied population. A larger sample size including hypertensive subjects may be needed.

scholarly journals Effect of hypovitaminosis D and its related factors in pregnant women and their newborns

2019 ◽  
Vol 8 (3) ◽  
pp. 1115
Author(s):  
Amrita Sandhu ◽  
Ruchira Nautiyal ◽  
Vinit Mehrotra ◽  
Sanober Wasim
Keyword(s):  
Vitamin D ◽  
Cord Blood ◽  
Pregnant Women ◽  
Vitamin D Deficiency ◽  
Negative Correlation ◽  
Serum Vitamin ◽  
Related Factors ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
The Impact

Background: Maternal and fetal vitamin D deficiency has nowadays emerged as a frequent morbidity. Adequate vitamin D concentrations during pregnancy are necessary to maintain neonatal calcium homeostasis, bone maturation and mineralization. Objectives of this study were to evaluate serum vitamin D concentration in mothers and its correlation with neonatal cord blood vitamin D at the time of delivery and to study the impact of hypovitaminosis on neonatal anthropometry. Effect of related factors like calcium (Ca), alkaline phosphatase (ALP) and parathyroid hormone (PTH) on maternal vitamin D levels were to be evaluated.Methods: Cross sectional study was done on a total of 220 healthy uncomplicated antenatal females with singleton pregnancy attending labor room at the time of delivery. Maternal and neonatal cord blood samples were drawn in the delivery room and analyzed. Neonatal anthropometry was recorded. Correlations among various maternal and neonatal factors were studied.Results: Widespread vitamin D deficiency was observed in expectant subjects and neonates with 70.91% having deficient levels which were also reflected in newborns (71.82%). Maternal ALP (r= -0.5503, p=0.000) bears a weak negative correlation (p<0.05), maternal serum Ca positive correlation (r = 0.7486, p=0.000) and plasma PTH levels a negative correlation (r = -2.084, p=0.000) with hypovitaminosis. No significant correlation was observed between neonatal anthropometry and vitamin D levels.Conclusions: High prevalence of hypovitaminosis was observed among pregnant women and their neonates in this study. A positive linear relationship was seen between maternal and cord blood vitamin D (r 0.974, p 0.0001).

Dietary and serum vitamin D and preeclampsia risk in Chinese pregnant women: a matched case–control study

2021 ◽  
pp. 1-26
Author(s):  
Xue-min Huang ◽  
Yan-hua Liu ◽  
Han Zhang ◽  
Yuan Cao ◽  
Wei-feng Dou ◽  
...  
Keyword(s):  
Vitamin D ◽  
Dietary Intake ◽  
Pregnant Women ◽  
Case Control Study ◽  
Serum Levels ◽  
Case Control ◽  
Serum Concentrations ◽  
Matched Case ◽  
Matched Case Control Study ◽  
Control Study

Abstract The effect of vitamin D (VD) on the risk of preeclampsia (PE) is uncertain. Few of previous studies focused on the relationship between dietary VD intake and PE risk. Therefore, we conducted this 1:1 matched case-control study to explore the association of dietary VD intake and serum VD concentrations with PE risk in Chinese pregnant women. A total of 440 pairs of participants were recruited during March 2016 to June 2019. Dietary information was obtained using a 78-item semi-quantitative food frequency questionnaire. Serum concentrations of 25(OH)D2 and 25(OH)D3 were measured by liquid chromatography–tandem mass spectrometry. Multivariate conditional logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs). Restricted cubic splines (RCS) were plotted to evaluate the dose-response relationship of dietary VD intake and serum VD concentrations with PE risk. Compared with the lowest quartile, the ORs of the highest quartile were 0.45 (95%CI: 0.29-0.71, Ptrend = 0.001) for VD dietary intake and 0.26 (95%CI: 0.11-0.60, Ptrend = 0.003) for serum levels after adjusting for confounders. In addition, the RCS analysis suggested a reverse J-shaped relationship between dietary VD intake and PE risk (P-nonlinearity = 0.02). A similar association was also found between serum concentrations of total 25(OH)D and PE risk (P-nonlinearity = 0.02). In conclusion, this study provides evidence that higher dietary intake and serum levels of VD are associated with the lower risk of PE in Chinese pregnant women.

scholarly journals Vitamin D Status and Its Role in First-Time and Recurrent Urinary Tract Infections in Children: A Case-Control Study

Children ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 419
Author(s):  
Carmen Muntean ◽  
Maria Săsăran
Keyword(s):  
Vitamin D ◽  
Urinary Tract ◽  
Case Control Study ◽  
Case Control ◽  
Study Group ◽  
Recurrent Utis ◽  
Vitamin D Levels ◽  
Tract Infections ◽  
First Time ◽  
Control Study

Vitamin D has emerged as a key factor in innate immunity. Its involvement in the pathogenesis of urinary tract infections (UTIs) has gained a lot of attention recently. The objective of this study is to investigate the association between serum 25-hydroxyvitamin D (25(OH)D) levels and first-time or recurrent UTIs in children. A prospective, case-control study was conducted on 101 pediatric patients, who were divided into two groups: 59 patients with UTIs and 42 age-matched healthy controls. Serum 25(OH)D was determined in each child and expressed in ng/mL. Vitamin D presented significantly lower values in study group subjects than in healthy controls (p < 0.01). Moreover, a significantly higher prevalence of vitamin D insufficiency and deficiency was found in children with UTIs (p < 0.01). Patients with recurrent UTIs presented significantly lower levels of vitamin D than those with first-time UTIs (p = 0.04). Urinary tract abnormalities did not seem to exercise an additional effect upon vitamin D levels within the study group. In conclusion, first-time and recurrent UTIs are associated with lower vitamin D levels. Further studies are necessary to validate our findings, as well as future longitudinal research regarding efficacy of vitamin D supplementation in children with UTIs.

scholarly journals Vitamin D Levels in Patients with and without Acne and Its Relation to Acne Severity: A Case-Control Study

2020 ◽  
Vol Volume 13 ◽  
pp. 759-765
Author(s):  
Ghadah Alhetheli ◽  
Ahmed Ibrahim Abd Elneam ◽  
Adel Alsenaid ◽  
Mohammed Al-Dhubaibi
Keyword(s):  
Vitamin D ◽  
Case Control Study ◽  
Case Control ◽  
Vitamin D Levels ◽  
Control Study

scholarly journals P114 Effect of vitamin D on parathyroid hormone, serum calcium and bone mineral density in patients with primary hyperparathyroidism being managed conservatively

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_1) ◽  
Author(s):  
Mahrukh Khalid ◽  
Vismay Deshani ◽  
Khalid Jadoon
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Parathyroid Hormone ◽  
Primary Hyperparathyroidism ◽  
Bone Mineral ◽  
Serum Calcium ◽  
Mineral Density ◽  
Neck Of Femur ◽  
Vitamin D Levels ◽  
Significant Difference

Abstract Background/Aims  Vitamin D deficiency is associated with more severe presentation of primary hyperparathyroidism (PTHP) with high parathyroid hormone (PTH) levels and reduced bone mineral density (BMD). We analyzed data to determine if vitamin D levels had any impact on PTH, serum calcium and BMD at diagnosis and 3 years, in patients being managed conservatively. Methods  Retrospective analysis of patients presenting with PHPT. Based on vitamin D level at diagnosis, patients were divided into two groups; vitamin D sufficient (≥ 50 nmol/L) and vitamin D insufficient (≤ 50 nmol/L). The two groups were compared for age, serum calcium and PTH levels at diagnosis and after mean follow up of 3 years. BMD at forearm and neck of femur (NOF) was only analyzed in the two groups at diagnosis, due to lack of 3 year’s data. Results  There were a total of 93 patients, 17 males, mean age 70; range 38-90. Mean vitamin D level was 73.39 nmol/L in sufficient group (n = 42) and 34.48 nmol/L in insufficient group (n = 40), (difference between means -38.91, 95% confidence interval -45.49 to -32.33, p &lt; 0.0001). There was no significant difference in age, serum calcium and PTH at the time of diagnosis. After three years, there was no significant difference in vitamin D levels between the two groups (mean vitamin D 72.17 nmol/L in sufficient group and 61.48 nmol/L in insufficient group). Despite rise in vitamin D level in insufficient group, no significant change was observed in this group in PTH and serum calcium levels. BMD was lower at both sites in vitamin D sufficient group and difference was statistically significant at NOF. Data were analyzed using unpaired t test and presented as mean ± SEM. Conclusion  50% of patients presenting with PHPT were vitamin D insufficient at diagnosis. Vitamin D was adequately replaced so that at 3 years there was no significant difference in vitamin D status in the two groups. Serum calcium and PTH were no different in the two groups at diagnosis and at three years, despite rise in vitamin D levels in the insufficient group. Interestingly, BMD was lower at forearm and neck of femur in those with sufficient vitamin D levels and the difference was statistically significant at neck of femur. Our data show that vitamin D insufficiency does not have any significant impact on PTH and calcium levels and that vitamin D replacement is safe in PHPT and does not impact serum calcium and PTH levels in the short term. Lower BMD in those with adequate vitamin D levels is difficult to explain and needs further research. Disclosure  M. Khalid: None. V. Deshani: None. K. Jadoon: None.

scholarly journals Association Between Serum 25-Hydroxy Vitamin D Levels and Blood Pressure Among Adolescents in Two Resource-Limited Settings in Peru

2015 ◽  
Vol 28 (8) ◽  
pp. 1017-1023 ◽  
Author(s):  
Katherine Tomaino ◽  
Karina M. Romero ◽  
Colin L. Robinson ◽  
Lauren M. Baumann ◽  
Nadia N. Hansel ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Vitamin D ◽  
Resource Limited Settings ◽  
Resource Limited ◽  
Vitamin D Levels ◽  
25 Hydroxy Vitamin D

Lower Vitamin D Level as a Risk Factor for Late Onset Neonatal Sepsis: An Observational Case–Control Study

2021 ◽  
Author(s):  
Shaimaa Reda Abdelmaksoud ◽  
Mostafa Abdel-Azim Mostafa ◽  
Rana Atef khashaba ◽  
Effat Assar
Keyword(s):  
Vitamin D ◽  
Case Control Study ◽  
Late Onset ◽  
Case Control ◽  
Sepsis Group ◽  
Term Neonates ◽  
Maternal Vitamin ◽  
Vitamin D Levels ◽  
25 Oh Vitamin D ◽  
Control Study

Objective The aim of the study is to investigate the relation of neonatal and maternal vitamin D and late-onset sepsis (LOS) Study Design One-hundred twenty term neonates along with their mothers were enrolled in this case–control study. Sixty neonates who were admitted in the neonatal intensive care unit by LOS and had not been previously admitted for last 48 hours and did not receive antibiotics or vitamin D were enrolled as cases (sepsis) group. On the other hand, 60 healthy term neonates were referred as control group. Maternal and neonatal serum 25-OH vitamin D levels were assessed in both the cohorts. Results Maternal and neonatal 25-OH vitamin D levels in cases (17.2 and 16.1 ng/mL, respectively) were significantly lower than in controls (22.7 and 21 ng/mL, respectively) p = 0.001. In the study group, the neonatal 25-OH vitamin D was negatively correlated with C-reactive protein and length of hospital stay (r = −0.616 and −0.596, respectively) p <0.001 for both. With a cut-off value of 12.9 ng/mL, the specificity and positive predictive value of neonatal vitamin D were 83.3 and 74.4%, respectively. The odds ratio was 1.088 (95% CI = 1.034–1.144)) for LOS in vitamin D-deficient neonates. Conclusion Neonates with higher vitamin D level are at lower risk of LOS than those with vitamin D deficiency. Maternal vitamin D correlates with neonatal vitamin D. These data suggest that maternal vitamin supplementation during pregnancy may lower the risk of LOS. Key Points

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