Humans ; Non-alcoholic Fatty Liver Disease ; complications ; Vitamin D ; blood ; Vitamin D Deficiency ; complications

Vitamin D, also known as cholecalciferol, is the precursor to the active steroid hormone 1, 25-dihydroxyvitamin D3 (calcitriol; 1, 25(OH)2D3). The main physiological role for 1, 25(OH)2D3 is to regulate calcium and inorganic phosphate homeostasis for bone health. More recently, vitamin D has been investigated for its effects in the prevention and treatment of a variety of diseases such as cancer, autoimmune disorders, and cardiovascular disease. Preclinical data strongly support a role for vitamin D in the prevention of cancer through its anti-proliferative, pro-apoptotic, and anti-angiogenic effects on cells. Epidemiologic and clinical studies have shown mixed data on the correlation between serum vitamin D levels and cancer risk. This report seeks to outline results from the most recent preclinical and clinical studies investigating the potential role of vitamin D in cancer prevention.
Calcitriol ; blood ; Cholecalciferol ; blood ; Humans ; Neoplasms ; blood ; etiology ; prevention & control ; Vitamin D ; blood ; Vitamin D Deficiency ; blood ; complications

OBJECTIVETo evaluate the effect of vitamin D level on early-onset sepsis (EOS) in neonates.

METHODSSeventy-eight full-term neonates with EOS were used as the research group (EOS group). sixty healthy full-term neonates without clinical and/or laboratory features related to infections were used as the control group. Blood samples of the neonates and their mothers in both groups were collected within 72 hours of delivery to determine 25-hydroxyvitamin D(25-OHD) levels. The rate of vitamin D deficiency in the neonates and the level of 25-OHD supplemented to their mothers during pregnancy were compared between the two groups.

RESULTSThere was a significant positive correlation between the serum level of 25-OHD of the mothers and that of the neonates in both groups (EOS group: r=0.797, P<0.01; control group: r=0.929, P<0.01). The neonates and their mothers in the EOS group had significantly lower 25-OHD levels than those in the control group (P<0.01). The rate of vitamin D deficiency among the neonates in the EOS group was significantly higher than that of the control group (P<0.01). The level of vitamin D supplemented to the mothers during the last 3 months of pregnancy in the EOS group was significantly lower than that in the control group (P<0.01).

CONCLUSIONSLow serum level of 25-OHD is associated with the development of early-onset sepsis in full-term neonates.

Adult ; Female ; Humans ; Infant, Newborn ; Male ; Neonatal Sepsis ; etiology ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications

OBJECTIVETo study the correlation between serum vitamin D level and severity of community acquired pneumonia (CAP) in young children, and explore related risk factors for CAP.

METHODSOne hundred and three children with CAP between October 2011 and April 2012 were enrolled in the study, including 15 cases of severe CAP and 88 cases of mild CAP. Ninety healthy children were used as the control group. 25-(OH)D(3) concentrations were measured by enzyme linked immunoassay.

RESULTSThe mean vitamin D concentration in the severe CAP group was significantly lower than in the mild CAP and control groups (P < 0.01), and there was no significant difference between the mild CAP and control groups (P = 0.674). Premature birth and vitamin D < 50 nmol/L were risk factors for severe CAP in the multivariate analysis.

CONCLUSIONSVitamin D deficiency might be associated with the severity of CAP in young children.

Child, Preschool ; Community-Acquired Infections ; blood ; etiology ; Female ; Humans ; Infant ; Logistic Models ; Male ; Pneumonia ; blood ; etiology ; Severity of Illness Index ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications

OBJECTIVETo assess the association between serum 25-hydroxyvitamin D [25(OH)D] levels at birth and bronchopulmonary dysplasia (BPD) in preterm infants.

METHODSThis study recruited preterm infants with gestational age of below 34 weeks who were born between January 2014 and December 2016. These preterm infants were classified into two groups: BPD and control. The association between serum 25(OH)D levels at birth and BPD was analyzed.

RESULTSSerum 25(OH)D levels in the BPD group was significantly lower than those in the control group [(37±17 nmol/L vs 47±20 nmol/L; P<0.05), and the rate of vitamin D deficiency was significantly higher than those in the control group (90.2% vs 74.0%; P<0.05). The level of serum 25(OH)D was negatively correlated with the incidence of BPD (r=-0.201, P=0.001).

CONCLUSIONSVitamin D deficiency at birth may be associated with BPD in preterm infants, but need to be further studied by multivariate analysis.

Bronchopulmonary Dysplasia ; blood ; etiology ; Female ; Humans ; Infant, Newborn ; Infant, Premature ; blood ; Male ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications

OBJECTIVETo examine serum 25-hydroxyvitamin D levels in children with tic disorders (TD) and to explore the relationship between vitamin D level and TD.

METHODSOne hundred and thirty-two children who were diagnosed with TD between November 2016 and May 2017 were enrolled as the TD group, including 8 cases of Tourette syndrome, 32 cases of chronic TD, and 92 cases of transient TD. One hundred and forty-four healthy children served as the control group. Peripheral venous blood samples were collected from each child. Serum levels of 25-hydroxyvitamin D were measured using HPLC-MS/MS. The categories of vitamin D status based on serum 25-hydroxyvitamin D level included: normal (>30 ng/mL), insufficiency (10-30 ng/mL) and deficiency (<10 ng/mL).

RESULTSMean serum level of 25-hydroxyvitamin D in the TD group was significantly lower than that in the control group (P<0.01). The rate of vitamin D insufficiency or deficiency in the TD group was significantly higher than in the control group (P<0.01). Mean serum level of 25-hydroxyvitamin D in the transient tic group was higher than in the TS group (P<0.05).

CONCLUSIONSVitamin D insufficiency or deficiency might be associated with the development of TD, and the level of serum 25-hydroxyvitamin D might be related to the classification of TD.

Child ; Child, Preschool ; Female ; Humans ; Male ; Tandem Mass Spectrometry ; Tic Disorders ; blood ; etiology ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications ; epidemiology

OBJECTIVETo investigate the relationship between serum 25-hydroxyvitamin D [25(OH)D] levels at birth and respiratory distress syndrome (RDS) in preterm infants.

METHODSThis retrospective study recruited preterm infants with gestational age of below 34 weeks who were born between January 2014 and December 2016. These preterm infants were divided into two groups: RDS (n=72) and control (n=40). Clinical data of the two groups were collected, including gestational age, birth weight, gender, delivery mode, Apgar scores at 1 minute and 5 minutes, incidence of maternal gestational diabetes mellitus, and use of prenatal steroid hormone. Peripheral blood samples were collected and 25(OH)D levels were measured by chemiluminescence immunoassay. The association between serum 25(OH)D levels at birth and RDS was analyzed by multivariate logistic regression.

RESULTSApgar scores at 1 minute and 5 minutes and serum 25(OH)D levels in the RDS group were significantly lower than those in the control group (P<0.05), while the rates of neonatal asphyxia and vitamin D deficiency were significantly higher than those in the control group (P<0.05). Multivariate logistic regression analysis showed that neonatal asphyxia (OR=2.633, 95%CI: 1.139-6.085) and vitamin D deficiency (OR=4.064, 95%CI: 1.625-10.165) were risk factors for RDS in preterm infants.

CONCLUSIONSVitamin D deficiency might be associated with increased risk of RDS in preterm infants. Reasonable vitamin D supplementation during pregnancy might reduce the incidence of RDS in preterm infants.

Dietary Supplements ; Female ; Humans ; Infant, Newborn ; Infant, Premature ; Male ; Respiratory Distress Syndrome, Newborn ; blood ; etiology ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications

The relationship between vitamin D deficiency and idiopathic central precocious puberty (ICPP) has been recently documented. In this study, 280 girls diagnosed with ICPP and 188 normal puberty control girls of similar ages were enrolled and retrospectively studied. The ICPP group had significantly lower serum 25-hydroxyvitamin D (25[OH]D) levels than the control group. Furthermore, a nonlinear relationship was found between serum 25[OH]D and ICPP, and a cut-off point for serum 25[OH]D was found at 31.8 ng/ml for ICPP with and without adjusting the different confounding factors. Girls with serum 25[OH]D ≥ 31.8 ng/ml had a lower odds ratio (unadjusted: OR 0.36, 95% CI 0.15 to 0.83, P < 0.05; height and weight adjusted: OR 0.44, 95% CI 0.18 to 1.08, P = 0.072; BMI adjusted: OR 0.36, 95% CI 0.16 to 0.84, P < 0.05). The ICPP subjects with 25[OH]D deficiency had a higher body mass index (BMI) than the subjects from the two other subgroups. Correlation analysis showed that vitamin D level is correlated with BMI and some metabolic parameters in the ICPP group. Our study suggested that vitamin D status may be associated with ICPP risk and may have a threshold effect on ICPP.
Body Mass Index ; Child ; China ; Female ; Humans ; Linear Models ; Logistic Models ; Multivariate Analysis ; Puberty, Precocious ; blood ; complications ; Retrospective Studies ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; epidemiology

Brain ; physiology ; Child ; Dyssomnias ; drug therapy ; epidemiology ; etiology ; Humans ; Infant ; Sleep ; drug effects ; Vitamin D ; administration & dosage ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications ; drug therapy ; epidemiology

OBJECTIVETo evaluate the relationship of vitamin D level with the development of necrotizing enterocolitis (NEC) in preterm infants.

METHODSA total of 429 preterm infants with a gestational age of <36 weeks, who were admitted to the department of neonatology within 2 hours after birth between January and December, 2016, were enrolled in the study. According to whether these infants developed NEC, the 429 subjects were divided into NEC group (n=22) and non-NEC group (n=407). Peripheral venous blood was collected from these preterm infants and their mothers at admission to measure the level of 25-hydroxyvitamin D (25-OHD). The two groups were compared in terms of the serum 25-OHD levels of preterm infants and their mothers. Pearson correlation analysis was used to investigate the correlation between the serum 25-OHD levels of preterm infants and their mothers. The distribution of vitamin D levels in preterm infants was compared between the two groups. The univariate logistic regression analysis was used to determine the risk factors for NEC in preterm infants.

RESULTSThe serum 25-OHD levels of preterm infants and their mothers in the NEC group were significantly lower than in the non-NEC group (P<0.001). In both groups, the serum 25-OHD levels of mothers and preterm infants were positively correlated with each other (P<0.001). The distribution of vitamin D levels (normal vitamin D level, low vitamin D level, vitamin D deficiency, and severe vitamin D deficiency) was significantly different between the NEC and non-NEC groups (P<0.001). The univariate logistic regression analysis showed that gestational age, birth weight, 25-OHD levels of preterm infants and their mothers, the duration of mechanical ventilation, the duration of oxygen inhalation, and the length of hospital stay were associated with the development of NEC (P<0.05).

CONCLUSIONSThe serum 25-OHD levels of preterm infants and their mothers may be related to the development of NEC in preterm infants, suggesting that vitamin D supplementation during pregnancy is important for preventing the development of NEC in preterm infants.

Enterocolitis, Necrotizing ; etiology ; Female ; Humans ; Infant, Newborn ; Infant, Premature ; Infant, Premature, Diseases ; etiology ; Logistic Models ; Male ; Vitamin D ; analogs & derivatives ; blood ; Vitamin D Deficiency ; complications