No Interaction Effect between Interleukin-6 Polymorphisms and Acid Ash Diet with Bone Resorption Marker in Postmenopausal Women

Background: Evidence is growing that a high-acid diet might accelerate the rate of bone loss, and gene polymorphisms such as Interleukin 6 (IL6) -174G/C and -572G/C are related to bone deterioration. However, no study of the interaction between diet and IL6 polymorphisms has been conducted among Asians. Thus, the objective of this study was to determine whether IL6 gene polymorphisms modified the association between dietary acidity and the rate of bone resorption. Methods: This cross-sectional study recruited 203 postmenopausal women (age ranged from 51 to 85 years old) in community settings. The dietary intakes of the participants were assessed using a validated interviewer-administered semi-quantitative food frequency questionnaire (FFQ), while dietary acid load (DAL) was estimated using net endogenous acid production (NEAP). Agena® MassARRAY genotyping analysis and serum collagen type 1 cross-linked C-telopeptide (CTX1) were used to identify the IL6 genotype and as a bone resorption marker, respectively. The interactions between diet and single-nucleotide polymorphisms (SNPs) were assessed using linear regressions. Results: A total of 203 healthy postmenopausal women aged between 51 and 85 years participated in this study. The mean BMI of the participants was 24.3 kg/m2. In IL6 -174 G/C, all the participants carried the GG genotype, while the C allele was absent. Approximately 40% of the participants had a high dietary acid load. Dietary acid load (B = 0.15, p = 0.031) and the IL6 -572 CC genotype group (B = 0.14, p = 0.044) were positively associated with a higher bone resorption. However, there was no moderating effect of the IL6 genetic polymorphism on the relationship between and acid ash diet and bone resorption markers among the postmenopausal women (p = 0.79). Conclusion: High consumption of an acid ash diet and the IL6 -572 C allele seem to attribute to high bone resorption among postmenopausal women. However, our finding does not support the interaction effect of dietary acidity and IL6 (-174G/C and -572G/C) polymorphisms on the rate of bone resorption. Taken together, these results have given scientific research other candidate genes to focus on which may interact with DAL on bone resorption, to enhance planning for preventing or delaying the onset of osteoporosis among postmenopausal women.

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Interaction Between Dietary Acid Load and IL6 -572 G/C Polymorphism on Blood Pressure Among Postmenopausal Women in Malaysia

Current Developments in Nutrition ◽

10.1093/cdn/nzaa058_022 ◽

2020 ◽

Vol 4 (Supplement_2) ◽

pp. 1264-1264

Author(s):

Sook Yee Lim ◽

Yoke Mun Chan ◽

Ramachandran Vasudevan ◽

Mohd Shariff Zalilah ◽

Yit Siew Chin

Keyword(s):

Blood Pressure ◽

Postmenopausal Women ◽

Positive Association ◽

Gene Interaction ◽

Community Dwelling ◽

Dietary Intakes ◽

Significant Positive Association ◽

Dietary Acid Load ◽

Dietary Acid ◽

Acid Load

Abstract Objectives We examined whether IL6 single nucleotide genetic polymorphism modified the association between dietary acid load (DAL) and blood pressure among postmenopausal women in Malaysia. Methods A total of 211 community-dwelling postmenopausal women were recruited. Dietary intakes of participants were assessed using a validated interview-administered semi-quantitative food frequency questionnaire while DAL was estimated using potential renal acid load (PRAL). Agena® MassARRAY genotyping analysis was used to identify the IL6 genotype and blood pressure was measured using a Digital Automatic BP monitor (OMRON HEM-907, Japan). Interaction between DAL and IL6 -572 G/C polymorphism was assessed using linear regression test. Results There was a significant interaction between DAL and IL6 -572 G/C polymorphism on systolic blood pressure (SBP) (Pinteraction = 0.041). A significant positive association between DAL and SBP with stronger relationship in CG and GG genotype carriers compare to CC carriers were observed. On the other hand, there was no significant diet-gene interaction effect on diastolic blood pressure. Conclusions Our findings suggest that the association between DAL and SBP might be influenced by IL6 -572 G/C polymorphism among postmenopausal women. Further work on how IL6 -572 G/C polymorphism influences the association with DAL on hypertension are warranted. Funding Sources Supported by Fundamental Research Grant Scheme (FRGS), Ministry of Higher Education Malaysia, and Putra Grant UPM.

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Dietary Acid Load, IGF-1 Single Nucleotide Polymorphism and Bone Resorption among Postmenopausal Chinese Women

Nutrients ◽

10.3390/nu10070915 ◽

2018 ◽

Vol 10 (7) ◽

pp. 915 ◽

Cited By ~ 1

Author(s):

Sook Lim ◽

Mohd Zalilah ◽

Yit Chin ◽

Vasudevan Ramachandran ◽

Yoke Chan

Keyword(s):

Physical Activity ◽

Single Nucleotide Polymorphism ◽

Bone Resorption ◽

Chinese Women ◽

National Council ◽

Nucleotide Polymorphism ◽

Single Nucleotide ◽

Dietary Acid Load ◽

Dietary Acid ◽

Acid Load

The interaction of dietary and genetic factors may affect the development of bone deterioration. This study investigated whether the effects of dietary acid load (DAL) on bone loss in postmenopausal Chinese women were moderated by the insulin-like growth factor-1 (IGF-1) single nucleotide polymorphism, a known gene that plays a role in the regulation of bone formation and bone remodeling. A total of 217 healthy participants were recruited from the National Council of Senior Citizens Organizations Malaysia. Serum collagen type 1 cross-linked C-telopeptide was used as a surrogate bone marker to assess bone resorption and Agena® MassARRAY genotyping analysis was used to identify the signaling of IGF-1 rs35767. The dietary acid load was measured by potential renal acid load score while physical activity was ascertained using the Global Physical Activity Questionnaire. Hierarchical regression was applied to test the main and interaction effects of DAL and IGF-1 genotypes in bone resorption. The result supported the diet-dependent acid-base balance theory that higher DAL was positively associated with bone resorption (β = 0.152, p = 0.031, F(6,207) = 2.11, sig-F = 0.036, R2 = 0.079). However, the results indicated that there was no significant correlation between IGF-1 and bone resorption, or any significant interaction between DAL and IGF-1. In conclusion, there was no moderating effect of IGF-1 on the relationship between DAL and bone resorption.

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Association of dietary acid load and plant-based diet index with sleep, stress, anxiety and depression in diabetic women

British Journal Of Nutrition ◽

10.1017/s0007114519003179 ◽

2019 ◽

Vol 123 (8) ◽

pp. 901-912 ◽

Cited By ~ 3

Author(s):

Elnaz Daneshzad ◽

Seyed-Ali Keshavarz ◽

Mostafa Qorbani ◽

Bagher Larijani ◽

Nick Bellissimo ◽

...

Keyword(s):

Mental Health ◽

Sleep Problems ◽

Mental Health Disorders ◽

Diabetic Patients ◽

Poor Sleep ◽

Dietary Intakes ◽

Dietary Acid Load ◽

Dietary Acid ◽

Acid Load ◽

Health Disorders

AbstractDiabetes is a common chronic disease with various complications. The present study was conducted to determine the association of plant-based diet index (PDI) and dietary acid load (DAL) with sleep status as well as mental health in type 2 diabetic women. In this cross-sectional study, a validated FFQ was used to assess dietary intakes of 230 diabetic patients. We created a whole PDI, healthful PDI (hPDI) and unhealthful PDI (uPDI). DAL was calculated based on potential renal acid load and net endogenous acid production method. The Pittsburgh Sleep Quality Index and twenty-one-item Depression, Anxiety and Stress Scale were used to assess sleep and mental health disorders, respectively. Participants in the top group of uPDI had greater risk of poor sleep (OR 6·47, 95 % CI 2·75, 15·24). However, patients who were in the top group of hPDI had a lower risk of sleep problems (OR 0·28, 95 % CI 0·13, 0·62). Participants in the top group of uPDI had greater risk of depression, anxiety and stress (OR 9·35, 95 % CI 3·96, 22·07; OR 4·74, 95 % CI 2·28, 9·85; OR 4·24, 95 % CI 2·14, 8·38, respectively). In conclusion, participants with higher DAL scores and patients who adhered to animal-based diets rather than plant-based diets were more likely to be poor sleepers and have mental health disorders.

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Dietary acid load and risk of cardiovascular disease: a prospective population-based study

BMC Cardiovascular Disorders ◽

10.1186/s12872-021-02243-8 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Parvin Mirmiran ◽

Zeinab Houshialsadat ◽

Zahra Bahadoran ◽

Sajjad Khalili‑Moghadam ◽

Mohammad Karim Shahrzad ◽

...

Keyword(s):

Cardiovascular Disease ◽

Asian Population ◽

Cardiovascular Effects ◽

The Body ◽

Dietary Intakes ◽

Food Frequency ◽

Dietary Acid Load ◽

Dietary Acid ◽

Acid Load ◽

The Impact

Abstract Background and aim Considering the inconsistencies in the cardiovascular effects of dietary acid load and the impact of dietary acidity on the acid–base homeostasis within the body, we aimed to assess the association of dietary acid load and the risk of cardiovascular disease (CVD) in a prospective community-based study. Materials and methods Participants (n = 2369) free of CVD at baseline (2006–2008) were included from the Tehran Lipid and Glucose Study (TLGS) and followed up for a mean of 6.7 ± 1.4 years. Dietary intakes of the participants were assessed using a semi-quantitative food frequency questionnaire (FFQ). The dietary acid load was evaluated by Potential Renal Acid Load (PRAL) and Net Endogenous Acid Production (NEAP) scores. Both scores have used the macronutrient and micronutrient data of the Food Frequency Questionnaires. Multivariate Cox proportional hazard regression models were used to estimate the 6-years incident risk of CVDs across tertiles of PRAL and NEAP scores. Results Mean age and body mass index of participants were 38.5 ± 13.3 years and 26.6 ± 4.8 kg/m2 at baseline. Within 6.7 ± 1.4 years of follow-up, 79 cases of cardiovascular events were reported. NEAP was significantly associated with the incidence of CVDs (HRs = 0.50, CI 0.32–0.96; P for trend = 0.032); however, after adjusting for potential confounders, no significant associations were observed between PRAL and NEAP scores and the risk of CVDs. Conclusions This study failed to obtain independent associations between dietary acid load and the incidence of CVDs among an Asian population.

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High dietary acid load score is not associated with the risk of metabolic syndrome in Iranian adults

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000626 ◽

2020 ◽

pp. 1-12

Author(s):

Noushin Mohammadifard ◽

Golgis Karimi ◽

Alireza Khosravi ◽

Nizal Sarrafzadegan ◽

Mahnaz Jozan ◽

...

Keyword(s):

Metabolic Syndrome ◽

Blood Sugar ◽

Cross Sectional Study ◽

Dietary Intakes ◽

Cross Sectional ◽

Dietary Acid Load ◽

Net Endogenous Acid Production ◽

Increased Risk ◽

Dietary Acid ◽

Acid Load

Abstract. Background and objective: The association between dietary acid load and metabolic syndrome (MetS) risk is not well-known. Therefore, we aimed to investigate the relationship between dietary acid load and the risk of MetS among Iranian adults. Methods: This cross-sectional study was carried out on 1430 Iranian adults. Dietary intakes were assessed using a validated food frequency questionnaire. Dietary acid load was estimated using potential renal acid load (PRAL) and net endogenous acid production (NEAP). MetS was defined according to the ATP-III criteria. The risk of MetS and its components was explored using logistic regression test. Results: Totally, 205 individuals were identified to have MetS. No significant association for MetS was found across the quartiles of PRAL and NEAP either in the crude model [Q4 PRAL: OR (95% CI): 0.94 (0.67–1.32), and NEAP: OR (95% CI): 0.88 (0.63–1.25)] or fully-adjusted model [Q4 PRAL: OR (95% CI): 0.90 (0.61–1.33), and NEAP: OR (95% CI): 1.05 (0.70–1.57)]. Amongst the components of MetS, higher scores of NEAP was associated with an increased risk of impaired blood sugar after adjustment for potential confounders [OR (95% CI): 1.35 (0.93–1.96)]. No significant association was found for other components either with PRAL or with NEAP. Conclusion: Our findings suggest no association between dietary acid load and MetS risk in Iranian adults. However, higher dietary acid load, measured by NEAP, but not PRAL, was associated with increased risk of impaired fasting blood sugar. Longitudinal studies are warranted to explore whether a diet low in potential acid load could reduce MetS risk.

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Dietary Acid Load and Its Interaction with IGF1 (rs35767 and rs7136446) and IL6 (rs1800796) Polymorphisms on Metabolic Traits among Postmenopausal Women

Nutrients ◽

10.3390/nu13072161 ◽

2021 ◽

Vol 13 (7) ◽

pp. 2161

Author(s):

Sook Yee Lim ◽

Yoke Mun Chan ◽

Vasudevan Ramachandran ◽

Zalilah Mohd Shariff ◽

Yit Siew Chin ◽

...

Keyword(s):

Postmenopausal Women ◽

Fasting Blood Glucose ◽

Community Dwelling ◽

Nucleotide Polymorphisms ◽

Significant Interaction Effect ◽

Single Nucleotide ◽

Dietary Acid Load ◽

Metabolic Traits ◽

Dietary Acid ◽

Acid Load

The objective of this study was to explore the effects of dietary acid load (DAL) and IGF1 and IL6 gene polymorphisms and their potential diet–gene interactions on metabolic traits. A total of 211 community-dwelling postmenopausal women were recruited. DAL was estimated using potential renal acid load (PRAL). Blood was drawn for biochemical parameters and DNA was extracted and Agena® MassARRAY was used for genotyping analysis to identify the signalling of IGF1 (rs35767 and rs7136446) and IL6 (rs1800796) polymorphisms. Interactions between diet and genetic polymorphisms were assessed using regression analysis. The result showed that DAL was positively associated with fasting blood glucose (FBG) (β = 0.147, p < 0.05) and there was significant interaction effect between DAL and IL6 with systolic blood pressure (SBP) (β = 0.19, p = 0.041). In conclusion, these findings did not support the interaction effects between DAL and IGF1 and IL6 single nucleotide polymorphisms (rs35767, rs7136446, and rs1800796) on metabolic traits, except for SBP. Besides, higher DAL was associated with higher FBG, allowing us to postulate that high DAL is a potential risk factor for diabetes.

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Associations between age-related changes in bone microstructure and strength and dietary acid load in a cohort of community-dwelling, healthy men and postmenopausal women

American Journal of Clinical Nutrition ◽

10.1093/ajcn/nqaa191 ◽

2020 ◽

Vol 112 (4) ◽

pp. 1120-1131

Author(s):

Maria Papageorgiou ◽

Fanny Merminod ◽

Thierry Chevalley ◽

Bert van Rietbergen ◽

Serge Ferrari ◽

...

Keyword(s):

Postmenopausal Women ◽

Bone Microstructure ◽

Community Dwelling ◽

Mineral Density ◽

Healthy Men ◽

Dietary Acid Load ◽

Age Related ◽

Dietary Acid ◽

Acid Load ◽

Age Related Changes

ABSTRACT Background The importance of dietary acid load (DAL) in the pathogenesis of osteoporosis is still debated. Age-related changes in bone microstructure and strength in relation to DAL remain largely unexplored. Objectives We investigated the associations between changes in areal and volumetric bone mineral density (BMD), bone microstructure and strength, fracture risk, and DAL in a prospective cohort of 65-y-old healthy men and postmenopausal women. Methods Potential renal acid load (PRAL; mEq/d) was calculated as a DAL proxy to characterize participants’ diet as alkaline (Alk-D; PRAL < −5), neutral (Neut-D; −5 ≤ PRAL ≤ 5), or acidic (Acid-D; PRAL >5). We measured areal BMD (aBMD) by DXA, and distal radius and tibia bone microstructure using high-resolution peripheral quantitative computed tomography, at baseline (n = 853) and after 6.1 ± 1.4 y (n = 708). Bone strength was estimated using finite element analyses at baseline and after 3.0 ± 0.5 y (n = 613). Prevalent and incident fractures were recorded. Results The majority of the participants (59%) had an Alk-D, while 23% had a Neut-D, and 18% an Acid-D. Baseline aBMD and bone microstructure and strength did differ or were slightly better in women or men with an Acid-D versus those consuming an Alk-D or Neut-D. Indeed, women with an Acid-D had higher trabecular number (P = 0.010 vs. Alk-D; P = 0.001 vs. Neut-D), while men had higher hip and radius aBMD (P = 0.008 and 0.024 vs. Neut-D, respectively) and radius strength (P = 0.026 vs. Neut-D). Over the follow-up, women in the Acid-D group experienced lower cortical and endocortical bone loss at the radius than did the Alk-D and Neut-D groups (cortical thickness, P = 0.008 and < 0.001; trabecular area, P = 0.001 and < 0.001, respectively). No association between fractures and PRAL was observed. Conclusions These null or favourable associations between baseline values or changes in aBMD, bone microstructure and strength, and DAL in this cohort of 65-y-old healthy individuals do not support adverse DAL-mediated effects on bone. This trial was registered at http://www.isrctn.com as ISRCTN11865958.

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Dietary Acid Load and Its Interaction With IGF1 and IL6 Polymorphisms on Metabolic Traits Among Postmenopausal Women

10.21203/rs.3.rs-129378/v1 ◽

2020 ◽

Author(s):

Sook Yee Lim ◽

Yoke Mun Chan (0000-0002-3853-736X) ◽

Vasudevan Ramachandran ◽

Zalilah Mohd Shariff ◽

Yit Siew Chin ◽

...

Keyword(s):

Blood Pressure ◽

Postmenopausal Women ◽

Genetic Polymorphisms ◽

Gene Polymorphisms ◽

Significant Interaction ◽

Cholesterol Ratio ◽

Metabolic Traits ◽

Dietary Acid ◽

Acid Load ◽

Il6 Gene

Abstract Background: Despite considerable work has been done to understand the underlying disease mechanisms by elucidating its genetic etiology, still the pathophysiology of the metabolic syndrome remains unclear. While numerous studies have shown that Insulin growth factors-1 (IGF1), Interleukin-6 (IL-6) gene polymorphisms and high dietary acid load (DAL) were related to undesirable profile of metabolic traits; it remains controversial whether DAL is associated with genetic polymorphisms or risk of metabolic traits. Thus, the objective of this study was to explore the effects of DAL, IGF1 and IL6 gene polymorphisms and their potential diet-gene interactions on metabolic traits. Methods: A total of 211 community-dwelling postmenopausal women were recruited. DAL was estimated using potential renal acid load (PRAL). Blood was drawn for biochemical parameters and DNA was extracted and Agena® MassARRAY was used for genotyping analysis to identify the signaling of IGF1 (rs35767, rs7136446) and IL6 (rs1800796) polymorphisms. Interactions between diet and genetic polymorphisms were assessed using hierarchical multiple linear regression analysis.Results: Mean age of respondents was 67 ± 6.7 years. A total of 68.2%, 59.2%, 49.3%, 23.2%, 23.2% and 10.9% had elevated systolic blood pressure (SBP), hyperglycemia, excessive waist circumference (WC), diastolic blood pressure (DBP), triglycerides (TG) and low high-density lipoprotein (HDL), respectively. DAL was positively associated with FBG (β = 0.147, p < 0.05) and there was significant interaction effect between DAL and IL6 with SBP (β = 0.19, p = 0.041). On the other hand, there were no significant main effects of DAL and single nucleotide polymorphisms (SNPs) (rs35767, rs7136446 and rs1800796) on SBP, DBP, WC, TG or HDL and cholesterol ratio. There were also no significant interaction effects between DAL and IGF1 SNPs (rs35767 and rs7136446) on SBP, DBP and FBG, TG, HDL and cholesterol ratio. Conclusion: These findings did not support the interaction effects between DAL and IGF1 and IL6 SNPs (s35767, rs7136446 and rs1800796) on metabolic traits, except for SBP. Besides, higher DAL was associated with higher FBG, allowing us to postulate high DAL is a potential risk factor for diabetes. Future research delineating foods that contribute to high DAL, and how IL6 gene polymorphism influences the association with DAL on hypertension are warranted.

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