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Pappe CL, Peters B, Pivovarova-Ramich O, Schremmer R, Adam A, Vach K, Dommisch H, Woelber JP. Effects of a 4-week free-sugar avoidance during periodontal therapy: An explorative randomized controlled clinical trial. J Periodontol 2024. [PMID: 39185702 DOI: 10.1002/jper.24-0208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 08/27/2024]
Abstract
BACKGROUND This study investigated the effect of a 4-week free-sugar avoidance on periodontal parameters during periodontal therapy. METHODS Twenty-one patients with untreated periodontitis and daily free-sugar intake were allocated to a sugar avoidance group (SAG) and a control group (CG). The SAG received a 45-min dietary consultation and was instructed to avoid free sugars during the following 4 weeks after subgingival instrumentation, while the CG continued with their regular diet. Bleeding on probing (BOP), plaque control record, body weight (BW), visceral fat (FATv), and a food frequency questionnaire (FFQ) were collected at baseline (T1), 4 weeks (T2), and 8 weeks (T3) after subgingival instrumentation. RESULTS The main outcome parameter BOP was significantly reduced at T2 by 40.3% ± 15.54 in the SAG and 34% ± 12.47 in the CG (intra-p value both <0.001, inter-p value 0.361). A linear regression analysis of changes at patient level adjusted for age and FATv revealed a significant group difference for BOP (regression coefficient = -6.8; p = 0.019). Significant reductions were observed in BW, FATv and mean daily intake of free sugars (-14.4 g/day), and a significant increase of vitamin C derived from fruits (75.89 mg/day) at T2 in the SAG only. CONCLUSION This study may indicate additional beneficial effects of a sugar avoidance on periodontal and metabolic parameters, and nutritional intake during periodontal therapy. German Clinical Trials Register (DRKS00026699). PLAIN LANGUAGE SUMMARY The current widespread free-sugar consumption is linked to an increasing incidence of chronic non-communicable diseases. Data indicate a relationship between sugar intake and a higher prevalence of periodontitis and increased gingival inflammation. This study showed that free-sugar avoidance after periodontal therapy had additional beneficial effects on periodontal and metabolic parameters in 10 test and 11 control patients. After 4 weeks of avoiding free sugars like sweets, processed white flour, juice, and so forth, periodontal bleeding was significantly reduced in both groups (-40.3% test group, -34% control group). Further regression analysis revealed a significant difference between groups favoring the intervention. Additionally, body weight and visceral fat were significantly reduced in the intervention group, only. To avoid sugar, patients were allowed to replace it with whole fruit, which led to increased levels of micronutrients such as vitamin C. Therefore, free-sugar avoidance may be of therapeutic benefit in addition to periodontal therapy. Further research is needed to investigate this effect in larger cohorts.
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Affiliation(s)
- Christina L Pappe
- Department of Periodontology, Oral Medicine, and Oral, Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Beeke Peters
- Research Group Molecular Nutritional Medicine and Department of Human Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- German Center for Diabetes Research (DZD), München, Germany
| | - Olga Pivovarova-Ramich
- Research Group Molecular Nutritional Medicine and Department of Human Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- German Center for Diabetes Research (DZD), München, Germany
- Department of Endocrinology and Metabolism, Corporate Member of Freie Universität Berlin, and Humboldt-Universität zu Berlin, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Robert Schremmer
- Department of Periodontology, Oral Medicine, and Oral, Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Aysegül Adam
- Department of Periodontology, Oral Medicine, and Oral, Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Kirstin Vach
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Hannover, Germany
- Department of Operative Dentistry and Periodontology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Henrik Dommisch
- Department of Periodontology, Oral Medicine, and Oral, Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Johan P Woelber
- Policlinic of Operative Dentistry, Periodontology, and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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Ghasemi P, Jafari M, Maskouni SJ, Hosseini SA, Amiri R, Hejazi J, Chambari M, Tavasolian R, Rahimlou M. Impact of very low carbohydrate ketogenic diets on cardiovascular risk factors among patients with type 2 diabetes; GRADE-assessed systematic review and meta-analysis of clinical trials. Nutr Metab (Lond) 2024; 21:50. [PMID: 39030553 PMCID: PMC11264514 DOI: 10.1186/s12986-024-00824-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 07/08/2024] [Indexed: 07/21/2024] Open
Abstract
OBJECTIVE This study was designed to evaluate the impact of VLCKD on cardiovascular risk factors in patients with T2DM. METHODS Until March 2024, extensive searches were conducted on PubMed, Scopus, Web of Science, Embase, and other relevant databases. The purpose was to identify clinical trials examining the impact of VLCKD on glycemic control, lipid profile, and blood pressure. The GRADE (Grading of Recommendations Assessment, Development, and Evaluation) method was used to assess the evidence's degree of certainty. RESULTS Our initial search found a total of 2568 records and finally 29 trials were included in final analysis. Our results showed that adherence from VLCKD led to significant reduction in fasting blood sugar (WMD= -11.68 mg/dl; 95% CI: -18.79, -4.56; P = 0.001), HbA1c (WMD= -0.29; 95% CI: -0.44, -0.14; P < 0.001), HOMA-IR(WMD= -0.71; 95% CI: -1.14, -0.29; P = 0.001), insulin (WMD= -1.45; 95% CI: -2.54, -0.36; P = 0.009), triglyceride (WMD= -17.95; 95% CI: -26.82, -9.07; P < 0.001), systolic blood pressure (WMD= -2.85, 95% CI: -4.99, -0.71; P = 0.009) and diastolic blood pressure (WMD= -1.40; 95% CI: -2.66, -0.13; P = 0.03). We also found a significant increase in high-density lipoprotein (HDL) level after adherence from VLCKD diet (WMD = 3.93, 95% CI: 2.03, 5.84; P = 0.000). We couldn't find any significant differences between groups in term of LDL and total cholesterol levels. CONCLUSION People following a VLCKD experience a more significant improvement in cardiovascular risk factors when compared to individuals on control diets.
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Affiliation(s)
- Parisa Ghasemi
- Research Committee, Medical School, Arak University of Medical Sciences, Arak, Iran
| | - Malihe Jafari
- Department of Exercise physiology, Faculty of Physical Education and Sports Sciences, Allameh Tabataba'i University, Tehran, Iran
| | - Saber Jafari Maskouni
- Department of nutrition, School of Public health, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Seyed Ahmad Hosseini
- Department of Nutrition, School of Allied Medical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Roksaneh Amiri
- Mofid Childrens Hospital Clinical Research Development Unit, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Jalal Hejazi
- Department of Nutrition, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mahla Chambari
- Department of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, 56000 Cheras, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Ronia Tavasolian
- Department of Nutrition, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mehran Rahimlou
- Department of Nutrition, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran.
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3
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Kazeminasab F, Miraghajani M, Khalafi M, Sakhaei MH, Rosenkranz SK, Santos HO. Effects of low-carbohydrate diets, with and without caloric restriction, on inflammatory markers in adults: a systematic review and meta-analysis of randomized clinical trials. Eur J Clin Nutr 2024; 78:569-584. [PMID: 38499791 DOI: 10.1038/s41430-024-01431-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/20/2024]
Abstract
Low-carbohydrate diets (LCDs) have gained interest due to their favorable effects on health outcomes, such as inflammation. However, further research is needed to ascertain the overall effects of LCDs on inflammatory parameters, but at the same time considering weight loss and calorie intake. Thus, a systematic review and meta-analysis of randomized clinical trials was performed to investigate the effects of LCDs compared with low-fat diets (LFDs), with and without caloric restriction, on inflammatory markers in adults. PubMed, Scopus, and Web of Science were searched through March 2022 to select intervention studies addressing LCDs vs. LFDs, in which the following circulating inflammatory markers were used: C-reactive protein (CRP), tumor necrosis factor alpha (TNF-α), and interleukin (IL-6). Analyses were conducted comparing LCDs vs. LFDs through weighted mean differences (WMD) or standardized mean differences (SMD) and 95% confidence intervals (95% CIs) using random effects models. The systematic review and meta-analysis included a total of 51 studies with a total sample of 4,164 adults, with or without other chronic diseases. Intervention durations ranged from 2-144 weeks. LCDs, compared with LFDs, significantly decreased body weight [WMD = -1.35%, p = 0.001], CRP [SMD = -0.1, p = 0.03], and IL-6 [SMD = -0.15, p = 0.09]. However, LCDs did not significantly decrease TNF-α [SMD = -0.02, p = 0.7] compared to LFDs. In conclusion, LCDs have a beneficial effect on markers of inflammation by decreasing CRP and IL-6; this effect has an association with weight loss. However, LCDs were not more effective than LFDs in decreasing TNF-α.
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Affiliation(s)
- Fatemeh Kazeminasab
- Department of Physical Education and Sport Sciences, Faculty of Humanities, University of Kashan, Kashan, Iran
| | - Maryam Miraghajani
- Department of Cancer Research Center, Shahid Beheshti of Medical Sciences, Tehran, Iran
| | - Mousa Khalafi
- Department of Physical Education and Sport Sciences, Faculty of Humanities, University of Kashan, Kashan, Iran
| | - Mohammad Hossein Sakhaei
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Guilan, Iran
| | - Sara K Rosenkranz
- Department of Kinesiology and Nutrition Sciences, University of Nevada Las Vegas, Las Vegas, NV, USA
| | - Heitor O Santos
- Postgraduate Program, Faculdade UNIGUAÇU, Cascavel, PR, Brazil.
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Galali Y, Zebari SMS, Aj. Jabbar A, Hashm Balaky H, Sadee BA, Hassanzadeh H. The impact of ketogenic diet on some metabolic and non-metabolic diseases: Evidence from human and animal model experiments. Food Sci Nutr 2024; 12:1444-1464. [PMID: 38455178 PMCID: PMC10916642 DOI: 10.1002/fsn3.3873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 03/09/2024] Open
Abstract
The ketogenic diet (KD) is recognized as minimum carbohydrate and maximum fat intakes, which leads to ketosis stimulation, a state that is thought to metabolize fat more than carbohydrates for energy supply. KD has gained more interest in recent years and is for many purposes, including weight loss and managing serious diseases like type 2 diabetes. On the other hand, many believe that KD has safety issues and are uncertain about the health drawbacks. Thus, the outcomes of the effect of KD on metabolic and non-metabolic disease remain disputable. The current narrative review aims to evaluate the effect of KD on several diseases concerning the human health. To our best knowledge, the first report aims to investigate the efficacy of KD on multiple human health issues including type 2 diabetes and weight loss, cardiovascular disease, kidney failure and hypertension, non-alcoholic fatty liver, mental problem, oral health, libido, and osteoporosis. The literature searches were performed in Databases, PubMed, Scopus, and web of Science looking for both animal and human model designs. The results heterogeneity seems to be explained by differences in diet composition and duration. Also, the available findings may show that proper control of carbohydrates, a significant reduction in glycemic control and glycated hemoglobin, and weight loss by KD can be an approach to improve diabetes and obesity, hypertension, non-alcoholic fatty liver, PCOS, libido, oral health, and mental problem if isocaloric is considered. However, for some other diseases like cardiovascular disease and osteoporosis, more robust data are needed. Therefore, there is robust data to support the notion that KD can be effective for some metabolic and non-metabolic diseases but not for all of them. So they have to be followed cautiously and under the supervision of health professionals.
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Affiliation(s)
- Yaseen Galali
- Food Technology DepartmentCollege of Agricultural Engineering Sciences, Salahaddin University‐ErbilErbilIraq
| | - Salih M. S. Zebari
- Department of Nutrition and DieteticsCihan University‐ErbilErbilIraq
- Animal Resource DepartmentCollege of Agricultural Engineering Sciences, Salahaddin University‐ErbilErbilIraq
| | - Ahmed Aj. Jabbar
- Department of Medical Laboratory TechnologyErbil Technical Health and Medical College, Erbil Polytechnic UniversityErbilIraq
| | - Holem Hashm Balaky
- General Science Department, Faculty of EducationSoran UniversityErbilIraq
- Mergasor Technical InstituteErbil Polytechnic UniversityErbilIraq
| | - Bashdar Abuzed Sadee
- Food Technology DepartmentCollege of Agricultural Engineering Sciences, Salahaddin University‐ErbilErbilIraq
- Department of Nutrition and DieteticsCihan University‐ErbilErbilIraq
| | - Hamed Hassanzadeh
- Department of Food Science and Technology, Faculty of Para‐veterinaryIlam UniversityIlamIran
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5
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Choy KYC, Louie JCY. The effects of the ketogenic diet for the management of type 2 diabetes mellitus: A systematic review and meta-analysis of recent studies. Diabetes Metab Syndr 2023; 17:102905. [PMID: 38006799 DOI: 10.1016/j.dsx.2023.102905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 11/27/2023]
Abstract
OBJECTIVE To systematically review the effects of the ketogenic diet on glycaemic control, body weight, cardiovascular risk factors, and liver and kidney function in patients with type 2 diabetes. METHODS PubMed, MEDLINE, Embase, Cochrane Library and CINAHL were searched for randomised controlled trials published between 2001 and 2021 that compared the ketogenic diet to a control diet for effects on glycaemic control, body weight, cardiovascular risk factors, liver and renal function markers in adults with type 2 diabetes for >14 days. Meta-analyses using fixed or random effects models were conducted. RESULTS Nineteen reports from 11 randomised controlled trials were included. Compared to the control, the ketogenic diet showed no significant difference in changes in glycaemic control or body weight, but greater increases in HDL (standardised mean difference 0.19; 95%CI 0.02-0.37; I2 = 0 %; moderate-quality evidence) and greater reductions in triglycerides (standardised mean difference -0.41; 95%CI -0.64 to -0.18; I2 = 0 %; low-quality evidence). CONCLUSIONS The ketogenic diet may improve lipid profiles but showed no additional benefits for glycaemic control or weight loss compared to control diets in type 2 diabetes patients over two years.
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Affiliation(s)
- Kimberley Yu Ching Choy
- School of Biological Sciences, Faculty of Science, The University of Hong Kong, Hong Kong SAR, China
| | - Jimmy Chun Yu Louie
- School of Biological Sciences, Faculty of Science, The University of Hong Kong, Hong Kong SAR, China; Department of Nursing and Allied Health, School of Health Sciences, Swinburne University of Technology, Hawthorn, VIC, Australia.
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Gram-Kampmann EM, Olesen TB, Hansen CD, Hugger MB, Jensen JM, Handberg A, Beck-Nielsen H, Krag A, Olsen MH, Højlund K. A six-month low-carbohydrate diet high in fat does not adversely affect endothelial function or markers of low-grade inflammation in patients with type 2 diabetes: an open-label randomized controlled trial. Cardiovasc Diabetol 2023; 22:212. [PMID: 37592243 PMCID: PMC10436534 DOI: 10.1186/s12933-023-01956-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 08/10/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND While a low-carbohydrate diet (LCD) reduces HbA1c in patients with type 2 diabetes (T2D), the associated high intake of fat may adversely affect cardiovascular risk factors. To address this, we examined the effect of a non-calorie-restricted LCD high in fat on endothelial function and markers of low-grade inflammation in T2D over 6 months. METHODS In an open-label randomized controlled trial, 71 patients with T2D were randomized 2:1 to either a LCD (< 20 E% carbohydrates, 50-60 E% fat) or a control diet (50-60 E% carbohydrates, 20-30 E% fat) for six months. Flow-mediated vasodilation (FMD) and nitroglycerine-induced vasodilation (NID) were assessed by ultrasound in the brachial artery together with plasma interleukin-6 (IL-6) and serum high-sensitivity C-reactive protein (hsCRP) in the participants at baseline (n = 70) and after six months (n = 64). RESULTS The FMD and NID were unaltered in both groups after six months, and there were no between-group differences in change of either FMD (p = 0.34) or NID (p = 0.53) in response to the interventions. The circulating hsCRP and IL-6 levels decreased only in response to LCD (both p < 0.05). However, comparing changes over time with the control diet, the LCD did not reduce either IL-6 (p = 0.25) or hsCRP (p = 0.07) levels. The lack of changes in FMD and NID in response to LCD persisted after adjustment for cardiovascular risk factors. CONCLUSION A LCD high in fat for six months does not adversely affect endothelial function or selected markers of low-grade inflammation, which suggests that this nutritional approach does not increase the risk of cardiovascular disease. Trial registration ClinicalTrials.gov (NCT03068078).
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Affiliation(s)
- Eva M Gram-Kampmann
- Steno Diabetes Center Odense, Odense University Hospital, Kløvervænget 10, Entrance 112, 5000, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Open Patient Data Explorative Network, Odense University Hospital, Odense, Denmark
| | - Thomas B Olesen
- Steno Diabetes Center Odense, Odense University Hospital, Kløvervænget 10, Entrance 112, 5000, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Camilla D Hansen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
| | - Mie B Hugger
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
| | - Jane M Jensen
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
| | - Aase Handberg
- Department of Clinical Biochemistry, Aalborg University Hospital, Ålborg, Denmark
- Department of Clinical Medicine, Aalborg University, Ålborg, Denmark
| | - Henning Beck-Nielsen
- Steno Diabetes Center Odense, Odense University Hospital, Kløvervænget 10, Entrance 112, 5000, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Aleksander Krag
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
| | - Michael H Olsen
- Department of Internal Medicine 1, Holbæk Hospital, and Steno Diabetes Center Zealand, Holbæk, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Kurt Højlund
- Steno Diabetes Center Odense, Odense University Hospital, Kløvervænget 10, Entrance 112, 5000, Odense, Denmark.
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark.
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7
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Parry‐Strong A, Wright‐McNaughton M, Weatherall M, Hall RM, Coppell KJ, Barthow C, Krebs JD. Very low carbohydrate (ketogenic) diets in type 2 diabetes: A systematic review and meta-analysis of randomized controlled trials. Diabetes Obes Metab 2022; 24:2431-2442. [PMID: 36064937 PMCID: PMC9826205 DOI: 10.1111/dom.14837] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 01/11/2023]
Abstract
AIM Very low carbohydrate/ketogenic diets (VLC/KDs) are popular but their role in managing pre-diabetes and type 2 diabetes (T2D) is uncertain. This study uses a systematic review and meta-analysis of randomized controlled trials to estimate the effect of these diets in this population. MATERIALS AND METHODS A systematic review identified randomized controlled trials of at least 6 months duration comparing efficacy and safety of VLC/KDs (≤50 g carbohydrate or ≤10% total energy from carbohydrate per day) with a control diet (carbohydrate above the VLC/KD threshold) in adults with pre-diabetes or T2D. The primary outcome variable was glycated haemoglobin (HbA1c) after 12 months. The meta-analysis method was inverse variance weighting of mean values for continuous variables. RESULTS Key word searches identified 2290 studies; 2221 were not in scope. A full text review of 69 studies identified eight meeting inclusion criteria; in total, it involved 606 participants. Six studies reported HbA1c (%) at 12 months; four as change from baseline with a fixed effects estimate (95% confidence interval): VLC/KD minus control of 0.01% (-0.22 to 0.25), p = .91; and two as change from baseline: -0.65% (-0.99; -0.31) [-7.1 mmol/mol (-10.8; -3.4)], p < .001. Serum triglycerides were lower with VLC/KD versus control: -0.28 mmol/L (-0.44 to -0.11), p < .001. High-density lipoprotein was higher with an estimate of 0.04 mmol/L (0.01 to 0.08), p = .03, in the five studies reporting 12-month summary data. CONCLUSIONS A VLC/KD may cause reductions in HbA1c and triglycerides in those with pre-diabetes or T2D but evidence of an advantage over other strategies is limited. More well-designed studies are required to provide certain evidence.
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Affiliation(s)
- Amber Parry‐Strong
- Department of Medicine, Division of Health SciencesUniversity of Otago Wellington, School of Medicine and Health Sciences BuildingWellingtonNew Zealand
| | - Morag Wright‐McNaughton
- Department of Medicine, Division of Health SciencesUniversity of Otago Wellington, School of Medicine and Health Sciences BuildingWellingtonNew Zealand
| | - Mark Weatherall
- Department of Medicine, Division of Health SciencesUniversity of Otago Wellington, School of Medicine and Health Sciences BuildingWellingtonNew Zealand
| | - Rosemary M. Hall
- Department of Medicine, Division of Health SciencesUniversity of Otago Wellington, School of Medicine and Health Sciences BuildingWellingtonNew Zealand
| | - Kirsten J. Coppell
- Department of Medicine, Dunedin School of MedicineUniversity of OtagoDunedinNew Zealand
| | - Christine Barthow
- Department of Medicine, Division of Health SciencesUniversity of Otago Wellington, School of Medicine and Health Sciences BuildingWellingtonNew Zealand
| | - Jeremy D. Krebs
- Department of Medicine, Division of Health SciencesUniversity of Otago Wellington, School of Medicine and Health Sciences BuildingWellingtonNew Zealand
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8
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Millan-Orge M, Torres-Peña JD, Arenas-Larriva A, Quintana-Navarro GM, Peña-Orihuela P, Alcala-Diaz JF, Luque RM, Rodriguez-Cantalejo F, Katsiki N, Lopez-Miranda J, Perez-Martinez P, Delgado-Lista J. Influence of dietary intervention on microvascular endothelial function in coronary patients and atherothrombotic risk of recurrence. Sci Rep 2021; 11:20301. [PMID: 34645870 PMCID: PMC8514425 DOI: 10.1038/s41598-021-99514-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/22/2021] [Indexed: 11/09/2022] Open
Abstract
Endothelial dysfunction is a key player in both the onset and development of atherosclerosis. No study has examined whether healthy dietary patterns can improve microvascular endothelial function in patients with coronary heart disease (CHD) in the long-term and whether this relationship can affect patient's risk of CHD recurrence. In the CORDIOPREV study, a randomized, double-blind, controlled trial, dietary intervention with either the Mediterranean diet or a low-fat diet was implemented in 1,002 CHD patients. A laser-doppler flowmetry was performed at baseline and after 6 years of follow up in 664 patients, evaluating the effects of this dietary intervention on microvascular basal flow and reactive hyperaemia area, as well as on the risk of CHD recurrence, based on the TRS2P risk score. Basal flow (97.78 ± 2.79 vs. 179.31 ± 5.06 arbitrary perfusion units, 83.38% increase, p < 0.001) and reactive hyperaemia area (4233.3 ± 127.73 vs. 9695.9 ± 205.23 arbitrary perfusion units per time, 129.04% increase, p < 0.001) improved after the dietary intervention in the cohort, without finding differences due to the diet (p > 0.05 for the diet-effect). When patients were stratified to low, moderate or high-risk of recurrence, basal flow was similarly increased in all three groups. However, reactive hyperaemia area was improved to a greater extent in patients at the low-risk group compared with those at moderate or high-risk. No differences were observed between diets. Healthy dietary patterns can improve microvascular endothelial function and this improvement persists in the long-term. Patients with a low-risk of CHD recurrence show a greater improvement in reactive vasodilation to ischemia than patients in the moderate or high-risk groups.
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Affiliation(s)
- Marta Millan-Orge
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain
| | - Jose D Torres-Peña
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain.,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Antonio Arenas-Larriva
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain.,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Gracia M Quintana-Navarro
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain.,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Patricia Peña-Orihuela
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain.,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Juan F Alcala-Diaz
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain.,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Raul M Luque
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain.,Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Agrifood Campus of Internal Excellence (ceiA3), 14071, Cordoba, Spain
| | | | - Niki Katsiki
- First Department of Internal Medicine, Diabetes Center, Division of Endocrinology and Metabolism, AHEPA University Hospital, 1st Stilponos Kyriakidi, 546 21, Thessaloniki, Greece
| | - Jose Lopez-Miranda
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain. .,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain. .,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain. .,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain.
| | - Pablo Perez-Martinez
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain.,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain.,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain.,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Javier Delgado-Lista
- Lipids and Atherosclerosis Unit, Internal Medicine Unit, Reina Sofia University Hospital, 14004, Cordoba, Spain. .,Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Cordoba, Spain. .,Department of Medical and Surgical Sciences, University of Cordoba, 14004, Cordoba, Spain. .,CIBER Fisiopatologia de La Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, 28029, Madrid, Spain.
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9
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Abstract
To assess the pleiotropic effects of ketogenic diets (KD) on glucose control, changes in medication, and weight loss in individuals with type 2 diabetes, and to evaluate its practical feasibility RECENT FINDINGS: KD results in improved HbA1c already after 3 weeks, and the effect seems to persist for at least 1 year. This is associated with a reduction in glucose-lowering medications. The weight loss observed after a short time period seems to be maintained with a long-term diet. Adequate support (supportive psychological counseling, enhancing positive affectivity, reinforcing mindful eating) is necessary to achieve a benefit and to assure adherence. Despite the documented decrease in HbA1, a definitive causal effect of KD remains to be proven. KD should be performed under strict medical supervision. Future research should clarify how compliance can be maximized and how ketosis can be optimally monitored.
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Affiliation(s)
- Delphine Tinguely
- grid.8515.90000 0001 0423 4662Service of Anesthesiology, Lausanne University Hospital (CHUV), Rue du Bugnon 46, Lausanne, Switzerland
| | - Justine Gross
- grid.8515.90000 0001 0423 4662Service of Endocrinology, Diabetes and Metabolism, Department of Medicine, Lausanne University Hospital (CHUV) and University of Lausanne, Avenue de la Sallaz 8, 1011 Lausanne, Switzerland
| | - Christophe Kosinski
- grid.8515.90000 0001 0423 4662Service of Endocrinology, Diabetes and Metabolism, Department of Medicine, Lausanne University Hospital (CHUV) and University of Lausanne, Avenue de la Sallaz 8, 1011 Lausanne, Switzerland
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10
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Barbosa-Yañez RL, Markova M, Dambeck U, Honsek C, Machann J, Schüler R, Kabisch S, Pfeiffer AFH. Predictive effect of GIPR SNP rs10423928 on glucose metabolism liver fat and adiposity in prediabetic and diabetic subjects. Peptides 2020; 125:170237. [PMID: 31874232 DOI: 10.1016/j.peptides.2019.170237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 12/15/2019] [Accepted: 12/18/2019] [Indexed: 11/22/2022]
Abstract
The gastric inhibitory polypeptide receptor (GIPR) regulates postprandial metabolism. In this context GIPR SNP rs10423928 seems toplay an important role in modulating glucose metabolism and insulinsensitivity. However, evidence regarding thisparticular SNP is still vague. In this study, we collected baseline data from four different dietaryintervention studies. We genotyped 424 subjects with prediabetes and 73with diabetes for GIPR SNP rs10423928 and examined its impact on glucosemetabolism, insulin sensitivity and body fat accumulation. We extended previous data by showing that carriers of the A allele withprediabetes displayed increased fasting glucose (p = 0.015). Unexpectedly,A allele carriers showed lower glucose levels 2 h (p = 0.021) after anoral glucose challenge compared to T/T homozygous individuals. A allelecarriers also showed significantly higher insulin sensitivity (p < 0.001)(assessed by Cederholm Index), indicating an enhanced ß-cell response. This study points to a potential protective role for rs10423928 inglucose metabolism and insulin sensitivity in subjects with prediabetes.Further studies are necessary to confirm these results.
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Affiliation(s)
- Renate Luzía Barbosa-Yañez
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany; Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12203, Berlin, Germany.
| | - Mariya Markova
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
| | - Ulrike Dambeck
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany; Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Caroline Honsek
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany; Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Jürgen Machann
- German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany; Institute of Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen, 72076, Tübingen, Germany; Section on Experimental Radiology, Department of Diagnostic and Interventional Radiology, University Hospital Tübingen, 72076, Tübingen, Germany
| | - Rita Schüler
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
| | - Stefan Kabisch
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany; Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Andreas F H Pfeiffer
- Department of Clinical Nutrition, German Institute of Human Nutrition, Potsdam-Rehbruecke, 14558, Nuthetal, Germany; German Center for Diabetes Research (Deutsches Zentrum für Diabetesforschung e.V.), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany; Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
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