Effect of cholecalciferol supplementation on hand grip strength, walking speed, and expression of vitamin D receptor, interleukin-6, and insulin-like growth factor-1 in monocyte in pre-frail older adults: A randomized double-blind placebo-controlled trial.

AIM: To investigate the effect of cholecalciferol supplementation on hand grip strength, walking speed, and expression of vitamin D receptor (VDR), interleukine-6 (IL-6) and insulin-like growth factor-1 (IGF-1) in monocyte in pre-frail older adults. METHODS: We conducted a randomized double-blinded placebo-controlled clinical trial for 12 weeks, involving 120 pre-frail older adults who were randomized to the cholecalciferol group (cholecalciferol 4000 IU/day) or the placebo group. All subjects were given calcium lactate 500 mg/day. Hand grip strength and walking speed, as primary outcomes, were analyzed using intention-to-treat analysis. The expression of VDR, IGF-1 and IL-6 in monocytes, as secondary outcomes, were analyzed using per-protocol analysis. RESULTS: After a 12-week intervention, there was a significant increase in serum 25(OH)D levels in both groups, with the increase being higher in the cholecalciferol group than in the placebo group (49.05 vs. 24.01 ng/mL; P < 0.001). No statistically significant differences were observed in hand grip strength (P = 0.228) and walking speed (P = 0.734) between the groups. There were no differences in the expression of VDR (P = 0.513), IL-6 (P = 0.509), and IGF-1 (P = 0.503) monocytes between the groups. CONCLUSIONS: Cholecalciferol supplementation for 12 weeks increased serum 25(OH)D levels among pre-frail older adults. However, it did not improve hand grip strength and walking speed, and nor did it change the expression of VDR, IL-6, and IGF-1 in monocytes. Geriatr Gerontol Int 2024; 24: 554-562.

The Effect of Vitamin D Supplementation on Symptoms of Depression in Patients with Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

BACKGROUND: The effect of vitamin D supplementation on depressive  symptoms in people with type 2 diabetes is still up for debate. The aim of this paper was to investigate the effect of vitamin D supplementation on symptoms of depression in type 2 diabetic patients. METHODS: The protocol for this review has been registered in PROSPERO:CRD42021231713. Searching for literature was conducted using Pubmed, EBSCOhost, and EMBASE. Randomised controlled trials (RCTs) regarding vitamin D supplementation in type 2 diabetic patients with depression were retrieved through a systematic search. The outcome measured was a change in depressive symptoms evaluated with any validated rating scale. Independent data extraction was conducted, and the study quality was assessed. A meta-analysis was carried out to calculate the improvement in depressive symptoms in the group receiving vitamin D and the control group. The available evidence in RCTs was analysed using the PRISMA approach, and clinical significance was determined using the GRADE system. Risk of bias was assessed using the Cochrane Risk of Bias Tool. RESULTS: Four RCTs were reviewed and three RCTs were meta-analysed. In two studies, vitamin D was statistically effective in improving depressive symptoms in type 2 diabetic patients. Three randomised controlled trials  were included in the meta-analysis with 161 subjects using depression score as an outcome assessment. Vitamin D is significantly more effective than placebo (95% CI: -0.70 to - 0.08, p = 0.01). CONCLUSION: Vitamin D supplementation is effective in improving depressive symptoms in type 2 diabetic patients. Future research with different geographical areas and larger samples should be done to further assess the benefits.

The Relationship between Folic Acid and Vitamin B12 Serum Levels with High Sensitivity C-reactive Protein and Homocysteine in Chronic Hemodialysis Patients: A Cross-sectional Study.

BACKGROUND: Folic acid (FA) and vitamin B12 treatment have been routinely prescribed to lower serum homocysteine levels and to reduce inflammation. However, no study has been conducted to determine serum folic acid (SFA) and vitamin B12 (B12) levels in patients who have twice-weekly hemodialysis. The aim of our study was to assess serum folate and B12  levels in chronic hemodialysis patients and their relationship with hsCRP and homocysteine levels. METHODS: Our study was a cross-sectional study involcing patients who had twice-weekly hemodialysis in Dr Cipto Mangunkusumo National Hospital Jakarta, Indonesia. Predialysis blood samples were taken to measure SFA, B12, homocysteine and hsCRP levels. Patients with medical conditions affecting the assays were excluded. Spearman correlation was used to compare variables. RESULTS: Eighty subjects enrolled in this study. Among those of non-given folic acid and vitamin B-12 supplementation, only 3.85% of subjects had low folic acid levels, and none had low vitamin B12 levels. A moderate negative correlation between serum folic acid and homocysteine level (p≤0.001; r=-0.42) and a weak correlation between serum vitamin B12 and homocysteine level (p=0.009; r=-0.29) was found. Among the high-risk cardiovascular group (CRP>3, n=49), there is a moderate negative correlation between serum folic acid and homocysteine level (p≤0.001; r=-0.561) and a weak negative correlation between vitamin B12 and homocysteine level (p=0.018; r=-0.338). CONCLUSION: There is a significant negative correlation between serum vitamin B12 and folic acid with homocysteine levels, especially in high-risk cardiovascular group.

The Effect of Ophiocephalus striatus Extract on the Levels of IGF-1 and Albumin in Elderly Patients with Hypoalbuminemia.

BACKGROUND: a freshwater fish Ophiocephalus striatus or known locally to Indonesian as haruan,can potentially increases IGF-1 and albumin levels in elderly patients with hypoalbuminemia due to the contents of amino acids, fatty acids, vitamins, and minerals. This study was conducted to investigate the effect of Ophiocephalus striatus extract on the level of IGF-1 and albumin in elderly patients with hypoalbuminemia. METHODS: the study is a double-blind randomized controlled trial involving malnourished elderly inpatients (≥60 years old) recovering from acute condition before hospital discharge, with Mini Nutritional Assessment score ≤23.5 and albumin level <3.5 g/dL. A total of 109 subjects were randomly divided into two groups: one group received 10 g Ophiocephalus striatus extract per day for 14 days and another group received placebo. Albumin and IGF-1 levels were obtained before and after intervention. RESULTS: ninety subjects completed the study (extract group=45 subjects; placebo group =45 subjects) for 14 days. The median of age were 69 (64;75) years and the male to female ratio were 2 : 3. The changes of IGF-1 and albumin levels from before to after intervention between extract group compared to placebo group were 14.7 (0.30;31.5) ng/mL vs 1.0 (-6;13.15) ng/mL (p=0.002) and 0.5 (0.15;0.70) g/dL vs 0.10 (0.0;0.50) g/dL (p=0.003), respectively. There were significant differences in the improvement of IGF-1 and albumin levels between extract and placebo group. CONCLUSION: supplementation of Ophiocephalus striatus extract was associated with a significant increase in IGF-1 and albumin levels in elderly patients with hypoalbuminemia.