scholarly journals The Interplay of Vitamin D Deficiency and Cellular Senescence in the Pathogenesis of Obesity-Related Co-Morbidities

Nutrients ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 4127
Author(s):  
Abdulhadi Bima ◽  
Basmah Eldakhakhny ◽  
Dina Nuwaylati ◽  
Abrar Alnami ◽  
Mohammed Ajabnoor ◽  
...  

This scoping review aims to clarify the interplay between obesity, vitamin D deficiency, cellular senescence, and obesity-related metabolic consequences, mainly subclinical atherosclerosis, and non-alcoholic fatty liver disease (NAFLD). Obesity is a significant global health problem that involves cellular, environmental, behavioral, and genetic elements. The fundamental cause of obesity throughout all life stages is an energy imbalance, and its consequences are countless and, foremost, very common. Obesity has been comprehensively studied in the literature given its association with low serum vitamin D, with many proposed mechanisms linking the two conditions. Moreover, markers of exaggerated cellular senescence have been proven to accumulate in obese individuals. Subclinical atherosclerosis initiates an early stage that ends in serious cardiac events, and obesity, low vitamin D, and senescent cells largely contribute to its associated chronic low-grade inflammation. Furthermore, NAFLD signifies the hepatic manifestation of metabolic syndrome, and studies have highlighted the important role of obesity, vitamin D deficiency, and cellular senescence in its development. Therefore, we outlined the most important mechanisms tying these conditions to one another.

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Vahid Sheikhi ◽  
Zahra Heidari

Background: Non-alcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM) are major public health concerns. Besides the known risk factors, other risk factors, such as vitamin D deficiency, have been suggested for NAFLD. Objectives: This cross-sectional research aimed to investigate the relationship between serum vitamin D levels and NAFLD in a group of patients with T2DM. Methods: We investigated various clinical and biochemical parameters, including serum vitamin D level, liver function tests, and liver sonography in 1,110 adult patients with T2DM. The mean difference of numerical variables in NAFLD and non-NAFLD groups was analyzed with an independent sample t-test. Chi-square test was used to evaluate the association between two categorical variables. Results: Out of 1,110 patients with T2DM, 837 (75.4%) had NAFLD. The mean vitamin D level in diabetic patients with NAFLD was significantly lower than non-NAFLD group (19.71 ng/mL vs. 27.68 ng/mL, respectively; P < 0.001). Furthermore, 410 (49%) patients with NAFLD were found with vitamin D deficiency, while this value was 85 (31.1%) in non-NAFLD group. According to the results of univariate logistic regression analysis, vitamin D deficiency (OR = 3.87) and insufficient vitamin D (OR = 2.83) were the significant variables for NAFLD. Conclusions: There was a significant association between vitamin D deficiency and NAFLD in patients with T2DM.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
Y Lu ◽  
R Chou ◽  
Y Tsai ◽  
P Huang

Abstract Background Vitamin D deficiency had been suggested to be the risk factor of cardiovascular diseases and metabolic disorders. However, current evidence about the association between vitamin D deficiency and atherosclerosis are conflicted and inconclusive. Purpose We tried to investigate the relationship between serum vitamin D concentrations and subclinical atherosclerosis in the elderly Asian population. Methods The I-Lan longitudinal study (ILAS), 1798 community-dwelling adults older than 50 years old were enrolled and divided into two groups according to serum vitamin D level (sufficient, ≥20 ng/mL, and deficient <20 ng/mL). The concentrations of serum vitamin D3 was measured by chemiluminescence immunoassay and demographic data recorded from chart review. The carotid intima-media thickness (cIMT) was measured at bilateral common carotid arteries. Subclinical atherosclerosis was defined as mean cIMT more than 0.81mm, which had been proved to be associated with an increased risk of stroke and coronary events. Results Subjects with vitamin D deficiency (n=604, 33.6%) were younger, composed of more woman, smoker, with a higher incidence of hypertension, dyslipidemia, and metabolic syndrome. Compared with subjects without vitamin D sufficiency, patients with vitamin D deficiency were associated with lower risk of subclinical atherosclerosis (crude OR: 0.63, 95% CI: 0.50–0.81, p<0.001) in the univariate analysis. However, after adjusting gender and age, vitamin D deficiency was no more associated with risk of subclinical atherosclerosis. Risk of vitD3 and cIMT Subclinical Atherosclerosis (cIMT >0.8mm) Odds Ratio 95% Confidence Interval p-value Model 1   Vit D3 normal (≥20) Reference – –   Vit D3 deficiency (<20) 0.63 0.50–0.81 <0.001 Model 2   Vit D3 normal (≥20) Reference – –   Vit D3 deficiency (<20) 0.81 0.62–1.06 0.127 Model 3   Vit D3 normal (≥20) Reference – –   Vit D3 deficiency (<20) 0.93 0.69–1.24 0.599 Model 1: adjust for vit D3 (univariate); Model 2: adjusted for age, vit D3, Gender; Model 3: adjusted multivariate significantly in univariate analysis. Conclusion Vitamin D deficiency was not an independent risk factor for subclinical atherosclerosis in the elderly Asian population. The association observed in the univariate analysis may be confounded by gender difference or comorbidities.


Author(s):  
Vida Mohammadzadeh ◽  
Masoud Mehrpour ◽  
Abdoreza Ghoreishi ◽  
Koorosh Kamali ◽  
Babak Zamani

Background: Subclinical atherosclerosis is the asymptomatic phase of carotid atherosclerosis, and its early diagnosis is important to prevent cerebrovascular diseases. Although the vitamin D plays a role in the structure of vessels, the association between the serum level of vitamin D and subclinical atherosclerosis has not been well-studied. We aimed to investigate the association between serum vitamin D level and carotid artery intima-media thickness (CIMT) in Iranian population. Methods: One hundred individuals with the age range from 20 to 50 years with no history of cardiovascular risk factors were selected for the analysis. Measurements of serum 25-hydroxyvitamin D3 [25(OH) D3] concentration and CIMT were made. Confounding factors such as diabetes, hypertension (HTN), smoking, alcohol, tobacco, dyslipidemia, cardiovascular disease (CVD), high body mass index (BMI), history of drug intake especially calcium, vitamin D, statins, and anti-hypertensive drugs were considered and then excluded from our study. Results: The mean serum vitamin D level was  15.55 ± 0.42 ng/ml, whereas in the increased intima-media thickness (IMT), it was 12.50 ± 9.50 ng/ml. 55% of the subjects were diagnosed with subclinical atherosclerosis (IMT ≥ 0.75 mm). Mean IMT was  0.74 ± 0.12 mm; however, it was higher (0.86 ± 0.30) in severe vitamin D deficiency group. The analysis showed an association between serum 25(OH) D3 level and CIMT (P = 0.002). 44% of those participants with subclinical atherosclerosis had also a severe vitamin D deficiency, while only 13% of normal people had a severe vitamin D deficiency. Also, a correlation was observed between severe vitamin D deficiency and the presence of plaque or higher IMT. Conclusion: Serum 25(OH) D3 level was inversely correlated with CIMT in our investigated subjects with no cardiovascular risk factor.


2020 ◽  
Vol 90 (3-4) ◽  
pp. 346-352
Author(s):  
Vincenzo Pilone ◽  
Salvatore Tramontano ◽  
Carmen Cutolo ◽  
Federica Marchese ◽  
Antonio Maria Pagano ◽  
...  

Abstract. We aim to assess the prevalence of vitamin D deficiency (VDD) in patients scheduled for bariatric surgery (BS), and to identify factors that might be associated with VDD. We conducted a cross-sectional observational study involving all consecutive patients scheduled for BS from 2017 to 2019. The exclusion criteria were missing data for vitamin D levels, intake of vitamin D supplements in the 3 months prior to serum vitamin D determination, and renal insufficiency. A total of 206 patients (mean age and body mass index [BMI] of 34.9 ± 10.7 years, and 44.3 ± 6.99 kg/m2, respectively) met the inclusion criteria and were enrolled for data analysis. VDD (<19.9 ng/mL), severe VDD (<10 ng/mL), and vitamin D insufficiency (20–29.9 ng/mL) were present in 68.8 %, 12.5 %, and 31.2 % of patients, respectively. A significant inverse correlation was found between vitamin D levels and initial BMI, parathyroid hormone, and homeostatic model assessment of insulin resistance (r = −0.280, p < 0.05; r = −0.407, p = 0.038; r = −0.445, p = 0.005), respectively. VDD was significantly more prevalent in patients with higher BMI [−0.413 ± 0.12, CI95 % (−0.659; −0.167), p = 0.006], whereas no significant association between hypertension [−1.005 ± 1.65, CI95 % (−4.338; 2.326), p = 0.001], and diabetes type 2 (T2D) [−0.44 ± 2.20, CI95 % (−4.876; 3.986), p = 0.841] was found. We observed significant association between female sex and levels of vitamin D [6.69 ± 2.31, CI95 % (2.06; 11.33), p = 0.006]. The present study shows that in patients scheduled for BS, VDD deficiency is common and was associated with higher BMI, and female sex.


Author(s):  
Sanjeeva Kumar Goud T ◽  
Rahul Kunkulol

The present study was aimed to study the effect of Sublingual Vitamin D3 on Serum Vitamin D level in Vitamin D deficiency patients. This was a cross-sectional and interventional study. All the Vitamin D deficiency patients of age 18-60years and either gender, willing to participate in the study were included. Patients who had greater than 20 ng/ml were excluded from the study. The total number of participants in our study was 200, out of these 111 males and 89 females, the mean age in our study was 51.07 ± 7.39Yrs. All volunteers were given sublingual vitamin D3 (60,000IU) in six doses every fifteen days of follow up for 3 months. The subject’s serum 25(OH)D levels were estimated before and after the treatment of sublingual vitamin D3. There was a statistically significant difference in serum vitamin D3 level before 16.61±6.71 ng/ml and after 35.80±7.80 ng/ml after treatment with Sublingual Vitamin D3. Six doses of 60,000IU of Vitamin D3 sublingual route having improved the role of serum 25(OH)D levels in the treatment of Vitamin D3 deficiency patients.Keywords: Vitamin D3; Sublingual route


2021 ◽  
pp. 205141582199360
Author(s):  
Ghanshyam Kumawat ◽  
Vijay Chaudhary ◽  
Anurag Garg ◽  
Nishkarsh Mehta ◽  
Gagan Talwar ◽  
...  

Objective: We aimed to find out the association of low serum vitamin D levels with the incidence of prostate cancer through a prospective case-control study. Material and methods: This study was carried out in the tertiary care hospital (India). All newly diagnosed patients of prostate cancer and age-matched controls were included. Serum vitamin D levels were measured in all of them. Vitamin D status (ng/mL) was classified as severe deficiency <10, moderate deficiency 10–<30, normal 30–100, and toxicity >100. Normality of the data was tested by the Kolmogorov–Smirnov test, statistical analysis was done with Statistical Package for the Social Sciences version 26.0, p-value of <0.05 was considered significant. Results: In our study, 320 cases and 320 controls were included. The mean vitamin D levels in cases and controls were 15.71 ± 6.5 (ng/mL) and 17.63 ± 4.54 (ng/mL), respectively, ( p-Value <0.01). Patients with severe vitamin D deficiency (73.58%) had a Gleason score ⩾8 on biopsy and 79.24% of them had a serum prostate specific antigen (PSA) level >20 ng/mL. Conclusion: We had concluded that there was no significant association between vitamin D deficiency and increased risk of prostate cancer, although patients with higher-grade prostate cancer and with higher PSA level had severe vitamin D deficiency. Level of evidence: Not applicable for this multicentre audit.


2021 ◽  
Vol 15 (10) ◽  
pp. 2572-2573
Author(s):  
Khalil Ullah ◽  
Sajid Ur Rehman ◽  
Ramsha Nadeem ◽  
Muhammad Abubakar ◽  
Qasim Raza

Aim: Relationship between Vitamin D deficiency and pulmonary tuberculosis. Methodology: Study duration: November 2020 to April 2021 Sampling technique: A case-control study Setting: Hayatabad Medical Complex, Peshawar It included 30 adult newly identified sputum-quality pulmonary tuberculosis patients and 30 age and sex matched healthy cases as controls. All cases had undergone a thorough medical examination and repeated laboratory tests, including vitamin D, calcium, and sputum for AFB and X-ray chest. Results: Majority were males (88%). In the Study group, BMI decreased significantly i.e. 19.0 vs 23.5. Serum vitamin D concentrations were significantly lower in the tuberculosis group i.e. 17.9ng/dl than in the control group 24.8ng/dl. Mean of serum albumin in the control group was 3.9 ng/dl whereas 2.9 ng/dl in the study group. Conclusion: Hypovitaminosis D was associated with more severe medical symptoms, increased sputum smear positivity and large lesions on chest radiographs in patients with pulmonary tuberculosis. Keywords: Vitamin D, Pulmonary Tuberculosis, Sputum


2021 ◽  
Vol 7 (4) ◽  
pp. 320-323
Author(s):  
Ritika Gujrati ◽  
Krishnendra Varma ◽  
Ujjwal Kumar

Psoriasis is an immuno-mediated chronic systemic disease involving cytokines of helper Th1 pathway. Vitamin D has an effect on keratinocyte proliferation, differentiation and immune modulation of immune system especially Th1 pathway, which is altered in psoriatic skin suggesting that Vitamin D may have a role in pathogenesis of psoriasis. To study correlation between psoriasis vulgaris and serum vitamin D. To evaluate serum vitamin D level in psoriasis cases and in control group and correlating vitamin D level with severity and duration of the psoriasis. 57 cases (&#62;15years of age) with psoriasis and 57 healthy subjects were recruited. Psoriasis was clinically diagnosed and severity evaluated by PASI scale. Vitamin D was analysed by enhanced chemilumine scence on vitrus Eci autoanalyzer of Orth clinical diagnostic. Vitamin D deficiency defined as &#60;20ng/ml, insufficiency 20-30ng/ml and sufficient 30-100ng/ml. Vitamin D deficiency in the study was 22.8% in patients and 14% in control group. Vitamin D insufficiency was found in 42.1% of cases and 19.3% of control. According to chi-square the p-value is 0.003 showing significant association. There was a tendency towards decrease in vitamin D level with increase in disease duration. There was negative correlation between vitamin D and PASI score. The study found a significant relationship between vitamin D and psoriasis. Further metanalysis involving larger study population will be required to establish whether vitamin D levels benefits patient with psoriasis vulgaris.


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