The impact of vitamin D deficiency in pathogenesis of generalized periodontitis

2018 ◽  
Author(s):  
Kate Kuletskaya
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
The Impact

Vitamin D and Sleep Regulation: Is there a Role for Vitamin D?

2020 ◽  
Vol 26 (21) ◽  
pp. 2492-2496 ◽  
Author(s):  
Fiammetta Romano ◽  
Giovanna Muscogiuri ◽  
Elea Di Benedetto ◽  
Volha V. Zhukouskaya ◽  
Luigi Barrea ◽  
...  
Keyword(s):  
Vitamin D ◽  
Sleep Disorders ◽  
Vitamin D Deficiency ◽  
Sleep Apnea Syndrome ◽  
Regulatory Mechanisms ◽  
Sleep Regulation ◽  
Vitamin D Receptors ◽  
Obstructive Sleep ◽  
The Impact

Background: Vitamin D exerts multiple pleiotropic effects beyond its role in calcium-phosphate metabolism. Growing evidence suggests an association between hypovitaminosis D and sleep disorders, thus increasing the interest in the role of this vitamin in the regulatory mechanisms of the sleep-wake cycle. Objective: The study aimed to explore and summarize the current knowledge about the role of vitamin D in sleep regulation and the impact of vitamin D deficiency on sleep disorders. Methods: The main regulatory mechanisms of vitamin D on sleep are explained in this study. The literature was scanned to identify clinical trials and correlation studies showing an association between vitamin D deficiency and sleep disorders. Results: Vitamin D receptors and the enzymes that control their activation and degradation are expressed in several areas of the brain involved in sleep regulation. Vitamin D is also involved in the pathways of production of Melatonin, the hormone involved in the regulation of human circadian rhythms and sleep. Furthermore, vitamin D can affect sleep indirectly through non-specific pain disorders, correlated with alterations in sleep quality, such as restless legs syndrome and obstructive sleep apnea syndrome. Conclusions: : Vitamin D has both a direct and an indirect role in the regulation of sleep. Although vitamin D deficiency has been associated to sleep disorders, there is still scant evidence to concretely support the role of vitamin D supplementation in the prevention or treatment of sleep disturbances; indeed, more intervention studies are needed to better clarify these aspects.

11 Vitamin D Deficiency on Admission and the Association with Length of Stay in Patients with Thermal Injury: A Multi-center Analysis

2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S13-S14
Author(s):  
Sarah Zavala ◽  
Kate Pape ◽  
Todd A Walroth ◽  
Melissa A Reger ◽  
Katelyn Garner ◽  
...  
Keyword(s):  
Vitamin D ◽  
Length Of Stay ◽  
Vitamin D Deficiency ◽  
Burn Injury ◽  
Total Body Surface Area ◽  
Inhalation Injury ◽  
Hospital Length Of Stay ◽  
Burn Patients ◽  
Comfort Care ◽  
The Impact

Abstract Introduction In burn patients, vitamin D deficiency has been associated with increased incidence of sepsis. The objective of this study was to assess the impact of vitamin D deficiency in adult burn patients on hospital length of stay (LOS). Methods This was a multi-center retrospective study of adult patients at 7 burn centers admitted between January 1, 2016 and July 25, 2019 who had a 25-hydroxyvitamin D (25OHD) concentration drawn within the first 7 days of injury. Patients were excluded if admitted for a non-burn injury, total body surface area (TBSA) burn less than 5%, pregnant, incarcerated, or made comfort care or expired within 48 hours of admission. The primary endpoint was to compare hospital LOS between burn patients with vitamin D deficiency (defined as 25OHD < 20 ng/mL) and sufficiency (25OHD ≥ 20 ng/mL). Secondary endpoints include in-hospital mortality, ventilator-free days of the first 28, renal replacement therapy (RRT), length of ICU stay, and days requiring vasopressors. Additional data collected included demographics, Charlson Comorbidity Index, injury characteristics, form of vitamin D received (ergocalciferol or cholecalciferol) and dosing during admission, timing of vitamin D initiation, and form of nutrition provided. Dichotomous variables were compared via Chi-square test. Continuous data were compared via student t-test or Mann-Whitney U test. Univariable linear regression was utilized to identify variables associated with LOS (p < 0.05) to analyze further. Cox Proportional Hazard Model was utilized to analyze association with LOS, while censoring for death, and controlling for TBSA, age, presence of inhalation injury, and potential for a center effect. Results Of 1,147 patients screened, 412 were included. Fifty-seven percent were vitamin D deficient. Patients with vitamin D deficiency had longer LOS (18.0 vs 12.0 days, p < 0.001), acute kidney injury (AKI) requiring RRT (7.3 vs 1.7%, p = 0.009), more days requiring vasopressors (mean 1.24 vs 0.58 days, p = 0.008), and fewer ventilator free days of the first 28 days (mean 22.9 vs 25.1, p < 0.001). Univariable analysis identified burn center, AKI, TBSA, inhalation injury, admission concentration, days until concentration drawn, days until initiating supplementation, and dose as significantly associated with LOS. After controlling for center, TBSA, age, and inhalation injury, the best fit model included only deficiency and days until vitamin D initiation. Conclusions Patients with thermal injuries and vitamin D deficiency on admission have increased length of stay and worsened clinical outcomes as compared to patients with sufficient vitamin D concentrations.

The impact of air pollutants, UV exposure and geographic location on vitamin D deficiency

2018 ◽  
Vol 113 ◽  
pp. 241-254 ◽  
Author(s):  
Edris Hoseinzadeh ◽  
Parisa Taha ◽  
Chiang Wei ◽  
Hatam Godini ◽  
Ghulam Md Ashraf ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Air Pollutants ◽  
Geographic Location ◽  
Uv Exposure ◽  
The Impact

scholarly journals 0956 Vitamin D and Sleep in Children

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A363-A363
Author(s):  
B Al-Shawwa ◽  
Z Ehsan ◽  
D G Ingram
Keyword(s):  
Vitamin D ◽  
Sleep Apnea ◽  
Vitamin D Deficiency ◽  
Sleep Duration ◽  
Tertiary Care ◽  
Central Sleep Apnea ◽  
Sleep Efficiency ◽  
Sleep Study ◽  
Obstructive Sleep ◽  
The Impact

Abstract Introduction The impact of vitamin D on human health including sleep has been well described in adults. Its deficiency has been associated with multiple sleep disorders such as decrease in sleep duration, worsening of sleep quality and even obstructive sleep apnea. Such correlation is less evident in pediatric population. In the current study, we examined the relationship between sleep architecture and vitamin D status in children referred to a sleep clinic. Methods Retrospective-cohort study in a tertiary care children’s hospital over a one-year period. Children who underwent an in-laboratory-overnight-polysomnogram and had a 25-hydroxy vitamin D level (25-OH-vitD) obtained within 120 days of the sleep study were included. Patients with obstructive or central sleep apnea were excluded. Data from polysomnograms (PSG) and Pediatric Sleep Questionnaires (PSQ) were collected and analyzed. Results A total of 39 patients were included in the study with mean age of 6.6 years and 46% females. Twenty (51%) patients had vitamin D deficiency (25-OH-vitD less than 30 ng/ml). Children with vitamin D deficiency had less total sleep time (470.3 minutes +/-35.6 vs 420.3 minutes +/-61.7, p=0.004) and poorer sleep efficiency (91.9 % +/-5.6 vs 84.5 % +/-9.5, p=0.015) compared to vitamin D sufficient children. In addition, vitamin D deficient children had later weekday bedtimes (21:02 +/- 1:01 vs 20:19 +/- 0:55, p=0.037) and later weekend bedtimes (21:42 +/- 0:59 vs 20:47 +/- 1:08, p=0.016) with tendency for later wake up time that did not reach statistical significance. The remainder of polysomnographic findings and PSQ data were not different between the two groups. Conclusion Vitamin D deficiency in children is associated with objectively measured decreased sleep duration and poorer sleep efficiency. Furthermore, vitamin D deficiency was associated with delayed bedtimes, suggesting that vitamin D may influence circadian rhythm. Future prospective studies in children would be helpful in validating the effect of vitamin D on sleep. Support None

scholarly journals Hypovitaminosis D in pregnancy and its correlation with preeclampsia and gestational diabetes mellitus

2017 ◽  
Vol 6 (3) ◽  
pp. 890 ◽  
Author(s):  
Ankita Kumari ◽  
Shaila Mitra ◽  
Harish C Tiwari ◽  
Reena Srivastav
Keyword(s):  
Diabetes Mellitus ◽  
Vitamin D ◽  
Gestational Diabetes ◽  
Gestational Diabetes Mellitus ◽  
Vitamin D Deficiency ◽  
Serum Vitamin ◽  
Hypovitaminosis D ◽  
Health Concern ◽  
Control Group ◽  
The Impact

Background: Hypovitaminosis D has been associated with a number of adverse pregnancy outcomes, and has been recognised as a public health concern. The objective of this study was to determine the impact of Vitamin D deficiency on maternal complications like gestational diabetes mellitus (GDM) and preeclampsia (PE) among pregnant women.Methods: This was a case control study undertaken at antenatal clinics and indoor of BRD Medical College, Gorakhpur, Uttar Pradesh, India. Two maternal blood samples, one at <20 weeks and other at term along with cord blood at delivery were taken. Patients were classified into preeclampsia (n=60), gestational diabetes mellitus (n=35) and control group (n=180) after abstracting past medical records at delivery. Vitamin D was estimated by 25- Hydroxyvitamin D125 RIA kit and categorized according to ACOG criteria. Statistical analysis was done by using chi square test, binary logistic regression and Pearson’s correlation coefficient to compare between two variables. P<0.05 was considered statistically significant.Results: Out of 275 women included in the study, 78% of women were Vitamin D deficient. Mean serum vitamin D was significantly lower among preeclamptic women 11.53±6.22 ng/ml and GDM women 12.62±6.69 ng/ml as compared to controls 24.25±14.44 ng/ml (median=18.2 ng/ml) (P<0.05). Vitamin D deficiency was significantly higher in pregnant women GDM (94.28% vs 68.3%) and preeclampsia (96.67% vs 68.3%) when compared to uncomplicated group.Conclusions: Maternal vitamin D deficiency is highly prevalent in early pregnancy and is significantly associated with elevated risk for GDM and preeclampsia.

scholarly journals Vitamin D assessment in perioperative medicine and critical care

2019 ◽  
Author(s):  
Paul Zajic ◽  
Stefan Heschl ◽  
Michael Schörghuber ◽  
Petra Srekl-Filzmaier ◽  
Tatjana Stojakovic ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
False Positive Rate ◽  
Fluid Loading ◽  
Vitamin D Levels ◽  
Positive Rate ◽  
25 Hydroxy Vitamin D ◽  
The Mean ◽  
Clinical Trials Registry ◽  
The Impact

Summary Background There is controversy about the impact of acute illness on vitamin D levels. This study was carried out to assess the influence of perioperative fluid loading on 25-hydroxy-vitamin D [25(OH)D] levels. The study evaluated the clinical utility of a commonly available chemiluminescence assay (ECLIA, IDS-iSYS) and liquid chromatography/mass spectrometry (LC-MS/MS) in the diagnosis of vitamin D deficiency in this setting. Methods In this prospective observational pilot study in adult patients undergoing cardiovascular surgery on cardiopulmonary bypass (CPB), blood samples drawn at preoperative baseline (t1), after weaning from CPB (t2), on intensive care unit (ICU) admission (t3) and on the first (t4) and second (t5) postoperative days were analyzed. Results A total of 26 patients (130 samples) were included in this study. Fluid loading by CPB led to a median reduction of 25(OH)D by −22.6% (range −54.5% to −19.5%) between t1 and t2. Cohen’s kappa (κ) for method agreement for vitamin D deficiency (tested cut-off values 20 ng/ml and 12 ng/ml), was κ = 0.291 (p < 0.001) and κ = 0.469 (p < 0.001), respectively. The mean difference between measurements by ECLIA and LC-MS/MS was 4.8 ng/ml (±5.7), Pearson’s r for correlation was 0.73 (p < 0.001). The biologically inactive C3-epimer did not contribute to 25(OH)D levels assessed by LC-MS/MS. Conclusion The 25(OH)D measurements by chemiluminescence assays can noticeably deviate from those measured by LC-MS/MS, which can be considered the unequivocal gold standard. These assays may still be acceptably reliable in the screening for vitamin D deficiency, especially in the setting of low vitamin D levels. Stricter definitions, e.g. serum 25(OH)D levels lower than 12 ng/ml, may be used to diagnose deficiency with low false positive rate. Trial Registration DRKS00009216, German Clinical Trials Registry (www.drks.de)

Relationship between calcium metabolism and benign paroxysmal positional vertigo in north Sardinia population

2020 ◽  
Vol 30 (6) ◽  
pp. 375-382
Author(s):  
Andrea Melis ◽  
Davide Rizzo ◽  
Roberto Gallus ◽  
Maria Eleonora Leo ◽  
Nicola Turra ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Benign Paroxysmal Positional Vertigo ◽  
High Accuracy ◽  
T Score ◽  
Positional Vertigo ◽  
Vitamin D Levels ◽  
The Impact ◽  
Paroxysmal Positional Vertigo ◽  
Group 1

BACKGROUND: Benign paroxysmal positional vertigo (BPPV) has a reported recurrence ranging from 26.8 to 50%. Osteoporosis and Vitamin D deficiency seems to have an impact on recurrence of BPPV. OBJECTIVE: to evaluate the impact of osteoporosis and Vitamin D deficiency on recurrence of BPPV. METHODS: 73 consecutive patients were divided in two groups according to the presence (group 1) or absence (group 0) of a recurrent episode. BMD, femoral and lumbar T-scores and Vitamin D levels were recorded. Statistical analysis was performed to investigate correlations. RESULTS: patients in group 1 had statistically significant lower values of both femoral (–1,62±1,06 vs. –0,53±1,51; p = 0,001), lumbar T-score (–2,10±1,19 vs –0, 53±1.51, p = 0.001) and Vitamin D (19.53±15.33). The values of femoral T-score and Vitamin D could be combined in a model able to properly classify 65.8% of the cases (p = 0.002) as isolated or recurrent BPPV, with high accuracy (AUC 0.710 [0.590 –0.830]). CONCLUSION: present data show a probable correlation between osteoporosis and Vitamin D with recurrent BPPV.

scholarly journals Vitamin D Deficiency and Outcomes after Ankle Fusion

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0007
Author(s):  
Deepak Ramanathan ◽  
Mark J. Berkowitz ◽  
Alan Davis ◽  
Stephen J. Pinney ◽  
Sara Lyn Miniaci-Coxhead
Keyword(s):  
Risk Factors ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Reoperation Rate ◽  
Hardware Removal ◽  
Ankle Fusion ◽  
Vitamin D Levels ◽  
Normal Vitamin ◽  
Local Risk ◽  
The Impact

Category: Ankle Arthritis; Ankle; Basic Sciences/Biologics; Hindfoot Introduction/Purpose: Ankle fusions are associated with a complication profile including nonunion with associated poor functional outcomes, chronic pain, and need for reoperation. Local risk factors (bone and soft-tissue loss, infection, ankle and hindfoot deformity, and neuropathy) and systemic risk factors (advanced age, smoking, alcohol abuse, worker’s compensation, noncompliance, obesity, and systemic comorbidities such as diabetes and immunodeficiency) have been shown to be associated with the development of a nonunion following fusion procedures. Vitamin D has an important role in bone healing, and vitamin D deficiency has been proposed as a potential risk factor for the development of non-unions. The purpose of this study is to assess the impact of low vitamin D levels on reoperation rates and the development of nonunions following ankle fusion surgery. Methods: A retrospective chart review of all ankle fusions performed at a major health system from January 2010 to July 2019 was performed. In total, 240 ankle fusions were performed by seven surgeons. All patients who underwent primary fusion procedures were eligible for inclusion in this study. Exclusion criteria included: age less than 18 years; revision surgery; ankle fusion with the use of bulk allograft; ankle fusion performed as part of an oncologic reconstruction; and an absence of recorded vitamin D levels with 12 months of surgery. In total, 47 patients met inclusion criteria and formed the study group. In this group, 29/47 (61.7%) were female and 18/47 (38.3%) were male. Average age was 57.0 +- 12.3 years (range: 18.6 to 75.7). Patients were grouped according to their vitamin D levels as being deficient (<31 ng/ml) or normal (31-80 ng/ml). Results: Prevalence of vitamin D deficiency was 36.2% (17/47) at average of 35.7 ng/ml. In vitamin D deficient subgroup (n=17), average vitamin D level was 16.9 ng/ml. In normal vitamin D subgroup (n=30), average vitamin D was 46.4 ng/ml. Overall, reoperation rate was 21.3% (10/47). Reoperation rate was 35.3% (6/17) in vitamin D deficiency subgroup compared with 13.3% (4/30) reoperation rate in normal vitamin D subgroup (p<0.05). In vitamin D deficient subgroup, 5 procedures for nonunion included: dynamization (n=1), revision fusion (n=1), staged revision (n=2) and amputation (n=1) due to infected nonunion. There was also a symptomatic hardware removal. In normal vitamin D subgroup, reoperation indications included: malunion (n=1), elective dynamization before weightbearing (n=1), and symptomatic hardware removal (n=2). Normal vitamin D subgroup had zero nonunions. Conclusion: In patients undergoing ankle fusion, vitamin D deficiency (< 31 ng/ml) was associated with a reoperation rate over double that of patients with normal vitamin D levels. In the vitamin D deficient subgroup, nearly all reoperations were for nonunion as compared to zero nonunion incidence in those with normal vitamin D levels. These results suggest routine preoperative screening of vitamin D level is indicated as a key component of ankle fusion care. Vitamin D supplementation during the perioperative period may be indicated in regions with low sunlight to improve fusion rates and lower the risk of reoperation.

25-OH-Vitamin-D Deficiency Impairs Rituximab-Mediated Cellular Cytotoxicity and Is Associated With An Inferior Outcome Of Elderly DLBCL Patients Treated With Rituximab

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 1819-1819 ◽  
Author(s):  
Joerg Thomas Bittenbring ◽  
Bettina Altmann ◽  
Frank Neumann ◽  
Marina Achenbach ◽  
Joerg Reichrath ◽  
...  
Keyword(s):  
Vitamin D ◽  
Overall Survival ◽  
Vitamin D Deficiency ◽  
Multivariable Analysis ◽  
Serum Levels ◽  
Event Free Survival ◽  
Free Survival ◽  
Vitamin D Levels ◽  
25 Oh Vitamin D ◽  
The Impact

Abstract Background To investigate the impact and underlying mechanisms of vitamin-D-deficiency (VDD) on outcome of elderly (61 to 80 year-old) DLBCL patients. Methods Pretreatment 25-OH-vitamin-D serum levels from 359 patients treated in the prospective multicenter RICOVER-60 trial with 6 or 8 cycles of CHOP-14 with and without 8 cycles rituximab and 63 patients in the RICOVER-noRT study treated with 6xCHOP-14 + 8xR were determined determined by LIASION®, a commercially available chemoluminescent immunoassay. Results RICOVER-60 patients with VDD (defined as serum levels ≤8 ng/m l) and treated with rituximab had a 3-year event-free survival of 59% compared to 79% in patients with >8 ng/ml; 3-year overall survival was 70% and 82%, respectively. These differences were significant in a multivariable analysis adjusting for IPI risk factors with a hazard ratio of 2.1 [p=0.008] for event-free survival and 1.9 [p=0.040] for overall survival. In patients treated without rituximab 3-year EFS was not significantly different in patients with vitamin-D levels ≤8 and >8 ng/ml (HR 1.2; p=0.388). These results were confirmed in an independent validation set of 63 patients treated within the RICOVER-noRT study. Rituximab-mediated cellular toxicity (RMCC) against the CD20+ cell line Daudi as determined by LDH release assay increased significantly (p<0.005) in 5/5 vitamin-D-deficient individuals after vitamin-D substitution and normalization of their vitamin-D levels. Conclusions VDD is a significant risk factor for elderly DLBCL patients treated with rituximab. Our results show that VDD impairs RMCC and that RMCC can be improved by vitamin-D substitution. This together with the differential effect of VDD in patients treated with and without rituximab suggests that vitamin-D substitution might result in a better outcome of these patients when treated with CHOP plus rituximab. Supported by a grant from Deutsche Krebshilfe. Disclosures: No relevant conflicts of interest to declare.

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