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  1. Article ; Online: Association of Hepatic Steatosis and Fibrosis Indices With Insulin Sensitivity and Inflammation in the POP-ABC Study.

    Colon-Barreto, Brigida / Asuzu, Peace / Ebenibo, Sotonte / Dagogo-Jack, Samuel

    Journal of the Endocrine Society

    2024  Volume 8, Issue 4, Page(s) bvae020

    Abstract: Context: The cardiometabolic significance of subclinical liver fat in otherwise healthy individuals is unclear.: Objective: This work aimed to evaluate the association of hepatic steatosis/fibrosis with cardiometabolic risk markers and incident ... ...

    Abstract Context: The cardiometabolic significance of subclinical liver fat in otherwise healthy individuals is unclear.
    Objective: This work aimed to evaluate the association of hepatic steatosis/fibrosis with cardiometabolic risk markers and incident prediabetes among healthy adults.
    Methods: This is a post hoc analysis of data from the Pathobiology of Prediabetes in a Biracial Cohort (POP-ABC) study. The participants underwent assessments, including clinical examination, oral glucose tolerance test, insulin sensitivity, insulin secretion, plasma high-sensitivity C-reactive protein (hsCRP), and adiponectin levels, with the primary outcome of incident prediabetes during 5-year follow-up. Liver steatosis and fibrosis were assessed using the hepatic steatosis index (HSI) and the Fibrosis-4 (Fib-4) index, and participants were stratified by baseline quartiles (Q) of each index.
    Results: Among 343 (193 African American, 150 European American) participants (mean age 44.2 ± 10.6 years, body mass index 30.2 ± 7.28, fasting glucose 91.8 ± 6.80 mg/dL, and 2-hour glucose 125 ± 26.5 mg/dL), the mean baseline HSI was 39.7 ± 8.21 and Fib-4 index was 0.80 ± 0.41. Baseline HSI correlated with insulin sensitivity (
    Conclusion: Among initially normoglycemic individuals, hepatic steatosis predicted progression to prediabetes, probably via mechanisms that involve insulin resistance and inflammation.
    Language English
    Publishing date 2024-02-09
    Publishing country United States
    Document type Journal Article
    ISSN 2472-1972
    ISSN (online) 2472-1972
    DOI 10.1210/jendso/bvae020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Prevention begets prevention - lessons from the Da Qing Study.

    Dagogo-Jack, Samuel

    Nature reviews. Endocrinology

    2019  Volume 15, Issue 8, Page(s) 442–443

    MeSH term(s) Diabetes Mellitus ; Glucose Intolerance ; Humans ; Life Style ; Morbidity ; Outcome Assessment, Health Care
    Language English
    Publishing date 2019-06-11
    Publishing country England
    Document type Journal Article ; Comment
    ZDB-ID 2489381-X
    ISSN 1759-5037 ; 1759-5029
    ISSN (online) 1759-5037
    ISSN 1759-5029
    DOI 10.1038/s41574-019-0227-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Association of urinary albumin-to-creatinine ratio with cardiometabolic risk markers and pre-diabetes in adults with normoglycemia, normoalbuminuria, and normotension with parental type 2 diabetes.

    Everett, Matthew / Rushing, Natasha / Asuzu, Peace / Wan, Jim / Dagogo-Jack, Samuel

    BMJ open diabetes research & care

    2024  Volume 12, Issue 1

    Abstract: Introduction: This is a post hoc analysis of urinary albumin-to-creatinine ratio (uACR) within the normoalbuminuric range in relation to cardiometabolic risk factors among initially normoglycemic, normotensive participants in the Pathobiology of ... ...

    Abstract Introduction: This is a post hoc analysis of urinary albumin-to-creatinine ratio (uACR) within the normoalbuminuric range in relation to cardiometabolic risk factors among initially normoglycemic, normotensive participants in the Pathobiology of Prediabetes in a Biracial Cohort (POP-ABC) Study.
    Research design and methods: 308 healthy African American (AA) and European American (EA) participants in the POP-ABC Study underwent baseline assessments, including oral glucose tolerance test, anthropometry, urinary albumin-to-creatinine ratio (uACR), lipids, adipocytokines, insulin sensitivity and secretion. Participants were followed quarterly for 5.5 years (mean 2.62 years) for the primary outcome of incident pre-diabetes.
    Results: The cohort's mean fasting glucose was 92.1±6.90 mg/dL, 2-hour plasma glucose was 123±25.0 mg/dL, systolic blood pressure was 123±15.9 mm Hg, and diastolic blood pressure was 74±8.80 mm Hg. Baseline uACR levels (range 1-29 mg/g) were similar in AA versus EA participants (6.40 mg/g±4.80 vs 6.80±5.40 mg/g, p=0.52), higher in women than men (7.30 mg/g±5.30 vs 4.60±3.90 mg/g, p<0.0001), and showed significant associations with cardiometabolic risk factors, including age, insulin sensitivity, high-density lipoprotein cholesterol, and adiponectin levels (p=0.03-0.004). During 5.5 years of follow-up, 104 participants developed pre-diabetes and 204 maintained normoglycemia. Baseline uACR quartiles were associated with incident pre-diabetes (r=0.19, p=0.0011).
    Conclusions: Baseline uACR levels were associated with cardiometabolic risk markers and incident pre-diabetes risk among adults with normoglycemia, normoalbuminuria and normotension with parental diabetes.
    MeSH term(s) Adult ; Male ; Humans ; Female ; Prediabetic State ; Diabetes Mellitus, Type 2/complications ; Creatinine ; Insulin Resistance ; Blood Pressure ; Blood Glucose/analysis ; Parents ; Cardiovascular Diseases/etiology ; Cardiovascular Diseases/complications ; Albumins
    Chemical Substances Creatinine (AYI8EX34EU) ; Blood Glucose ; Albumins
    Language English
    Publishing date 2024-01-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2732918-5
    ISSN 2052-4897 ; 2052-4897
    ISSN (online) 2052-4897
    ISSN 2052-4897
    DOI 10.1136/bmjdrc-2023-003609
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Plasma Ceramides and Other Sphingolipids in Relation to Incident Prediabetes in a Longitudinal Biracial Cohort.

    Dagogo-Jack, Samuel / Asuzu, Peace / Wan, Jim / Grambergs, Richard / Stentz, Frankie / Mandal, Nawajes

    The Journal of clinical endocrinology and metabolism

    2024  

    Abstract: Context: Sphingolipids are linked to the pathogenesis of type 2 diabetes (T2D).: Objective: To test the hypothesis that plasma sphingolipid profiles predict incident prediabetes.: Design: A case-control study nested in the Pathobiology of ... ...

    Abstract Context: Sphingolipids are linked to the pathogenesis of type 2 diabetes (T2D).
    Objective: To test the hypothesis that plasma sphingolipid profiles predict incident prediabetes.
    Design: A case-control study nested in the Pathobiology of Prediabetes in a Biracial Cohort (POP-ABC) study, a 5-year follow-up study.
    Setting: Academic health center.
    Participants: Normoglycemic adults enrolled in the POP-ABC study. Assessments included OGTT, insulin sensitivity and insulin secretion. Participants with incident prediabetes were matched in age, sex, and ethnicity with non-progressors.
    Interventions: We assayed 58 sphingolipid species (ceramides, monohexosyl ceramides, sphingomyelins, and sphingosine) using LC/tandem mass spectrometry in baseline plasma levels from participants and determined association with prediabetes risk.
    Main outcome measure: The primary outcome was progression from normoglycemia to prediabetes, defined as impaired fasting glucose or impaired glucose tolerance.
    Results: The mean age of participants (N = 140; 50% Black, 50% female) was 48.1 ± 8.69 y, BMI 30.1 ± 5.78 kg/m2, fasting plasma glucose (FPG) 92.7 ± 5.84 mg/dl, and two-hour plasma glucose (2hrPG) 121 ± 23.3 mg/dl. Of the 58 sphingolipid species assayed, higher ratios of sphingomyelin C26:0/C26:1 (OR 2.73 [95% CI 1.172-4.408], P = 0.015) and ceramide C18:0/C18:1 (OR 1.236 [95% CI 1.042-1.466], P = 0.015) in baseline plasma specimens were significantly associated with progression to prediabetes during the 5-year follow-up period, after adjustments for age, race, sex, BMI, FPG, 2hPG, insulin sensitivity, and insulin secretion.
    Conclusions: We conclude that the saturated-to-monounsaturated ratios of long-chain ceramide C18:0/C18:1 and very-long-chain sphingomyelin C26:0/C26:1 are potential biomarkers of prediabetes risk among individuals with parental history of T2D.
    Language English
    Publishing date 2024-03-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3029-6
    ISSN 1945-7197 ; 0021-972X
    ISSN (online) 1945-7197
    ISSN 0021-972X
    DOI 10.1210/clinem/dgae179
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  5. Article ; Online: Regression from prediabetes to normal glucose regulation: State of the science.

    Sallar, Anthony / Dagogo-Jack, Samuel

    Experimental biology and medicine (Maywood, N.J.)

    2020  Volume 245, Issue 10, Page(s) 889–896

    Abstract: Impact statement: Prediabetes increases the risks of future type 2 diabetes (T2D) and vascular complications, risks that can be prevented by restoring normal glucose regulation (NGR). Few studies have pre-specified reversal of prediabetes and ... ...

    Abstract Impact statement: Prediabetes increases the risks of future type 2 diabetes (T2D) and vascular complications, risks that can be prevented by restoring normal glucose regulation (NGR). Few studies have pre-specified reversal of prediabetes and restoration of NGR as primary outcome, and current approaches that prevent T2D in people with prediabetes do not always reverse the prediabetes. The present review focuses on studies that have assessed reversal of the prediabetes, and discusses known and emerging predictors of prediabetes. We argue that fuller knowledge of such predictors could inform the discovery of novel, targeted interventions for reversing prediabetes.
    MeSH term(s) Animals ; Blood Glucose/metabolism ; Diabetes Mellitus, Type 2/prevention & control ; Disease Progression ; Glucose Intolerance/metabolism ; Humans ; Prediabetic State/complications ; Prediabetic State/metabolism
    Chemical Substances Blood Glucose
    Language English
    Publishing date 2020-03-25
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 4015-0
    ISSN 1535-3699 ; 1525-1373 ; 0037-9727
    ISSN (online) 1535-3699 ; 1525-1373
    ISSN 0037-9727
    DOI 10.1177/1535370220915644
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  6. Article ; Online: Implementing genetic testing in diabetes: Knowledge, perceptions of healthcare professionals, and barriers in a developing country.

    Balogun, Williams O / Naylor, Rochelle / Adedokun, Babatunde O / Ogunniyi, Adesola / Olopade, Olufunmilayo I / Dagogo-Jack, Samuel E / Bell, Graeme I / Philipson, Loui H

    Population medicine

    2024  Volume 6

    Abstract: Introduction: Maturity-Onset Diabetes of the Young (MODY) is an unusual type of diabetes often missed in clinical practice, especially in Africa. Treatment decisions for MODY depend on a precise diagnosis, only made by genetic testing. We aimed to ... ...

    Abstract Introduction: Maturity-Onset Diabetes of the Young (MODY) is an unusual type of diabetes often missed in clinical practice, especially in Africa. Treatment decisions for MODY depend on a precise diagnosis, only made by genetic testing. We aimed to determine MODY knowledge among Nigerian healthcare professionals (HCPs), their perceptions, and barriers to the implementation of genetic testing in diabetes patients.
    Methods: A cross-sectional survey was conducted among doctors and nurses in three levels of public and private healthcare institutions in Ibadan, Nigeria, from December 2018 to June 2019. In all, 70% and 30% of a total 415 participants were recruited from public and private centers, respectively. HCPs were recruited in a 60:40% ratio, respectively. A 51-item instrument was used to assess MODY knowledge, perceptions of HCPs, and barriers to the implementation of genetic testing in diabetes patients.
    Results: In the survey, 43.4% self-rated their current MODY knowledge to be at least moderate. About 68%, 73% and 86%, respectively, correctly answered 3 of 5 questions on basic genetics' knowledge. However, only 1 of 7 MODY-specific questions was answered correctly by 72.7% of the respondents. The mean basic genetics and MODY-specific knowledge scores were 2.6/5 (SD=1.0) and 1.8/9 (SD=1.3), respectively. Multiple linear regression showed higher mean scores among those aged 30-49 years, those with degrees and fellowships (except PhD), and general practitioners; 360 (80.0%) perceived that genetic testing plays a central role in diabetes care. Barriers to genetic testing were lack of access to testing facilities, guidance on the use of and updates/educational materials on genetic testing (82.7%, 62.1% and 50.3%, respectively).
    Conclusions: The level of MODY awareness and knowledge among Nigerian HCPs is unacceptably low with a lack of access to genetic testing facilities. These can hinder the implementation of precision diabetes medicine. Increased awareness, provision of decision support aids, and genetic testing facilities are urgently needed.
    Language English
    Publishing date 2024-03-13
    Publishing country Greece
    Document type Journal Article
    ISSN 2654-1459
    ISSN (online) 2654-1459
    DOI 10.18332/popmed/184210
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  7. Article: Calorie Restriction and Intermittent Fasting: Impact on Glycemic Control in People With Diabetes.

    Ganesan, Kavitha / Habboush, Yacob / Dagogo-Jack, Samuel

    Diabetes spectrum : a publication of the American Diabetes Association

    2020  Volume 33, Issue 2, Page(s) 143–148

    Abstract: Intermittent fasting has been suggested as an option for managing overweight and obesity. The purpose of this article is to present a balanced review of the practice of intermittent fasting and its impact on glycemic control in people with diabetes. ...

    Abstract Intermittent fasting has been suggested as an option for managing overweight and obesity. The purpose of this article is to present a balanced review of the practice of intermittent fasting and its impact on glycemic control in people with diabetes.
    Language English
    Publishing date 2020-05-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2211544-4
    ISSN 1040-9165
    ISSN 1040-9165
    DOI 10.2337/ds19-0064
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  8. Article ; Online: 2015 Presidential Address: 75 Years of Battling Diabetes--Our Global Challenge.

    Dagogo-Jack, Samuel

    Diabetes care

    2015  Volume 39, Issue 1, Page(s) 3–9

    Abstract: This address was delivered by Samuel Dagogo-Jack, MD, President, Medicine & Science ... 2015. Dr. Dagogo-Jack is a professor of medicine and the director of the Division of Endocrinology ... the Diabetes Prevention Program (DPP)/DPP Outcomes Study (DPPOS). Dr. Dagogo-Jack earned his medical and ...

    Abstract This address was delivered by Samuel Dagogo-Jack, MD, President, Medicine & Science, of the American Diabetes Association (ADA), at the Association's 75th Scientific Sessions in Boston, MA, on 7 June 2015. Dr. Dagogo-Jack is a professor of medicine and the director of the Division of Endocrinology, Diabetes and Metabolism and the director of the Clinical Research Center at The University of Tennessee Health Science Center, Memphis, TN, where he holds the A.C. Mullins Endowed Chair in Translational Research. He has been an ADA volunteer since 1991 and has served on several national committees and chaired the Association's Research Grant Review Committee. At the local level, he has served on community leadership boards in St. Louis, MO, and Tennessee. A physician-scientist, Dr. Dagogo-Jack's current research focuses on the interaction of genetic and environmental factors in the prediction and prevention of prediabetes, diabetes, and diabetes complications. He is the principal investigator of the Pathobiology of Prediabetes in a Biracial Cohort (POP-ABC) study and also directs The University of Tennessee site for the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) and the Diabetes Prevention Program (DPP)/DPP Outcomes Study (DPPOS). Dr. Dagogo-Jack earned his medical and research doctorate degrees from the University of Ibadan College of Medicine in Nigeria, holds a master's of science from the University of Newcastle upon Tyne in England, and completed his postdoctoral fellowship training in metabolism at the Washington University School of Medicine in St. Louis in Missouri. A board-certified endocrinologist, Dr. Dagogo-Jack has been elected to the Association of American Physicians and is the 2015 recipient of the Banting Medal for Leadership from the ADA. The ADA and Diabetes Care thank Dr. Dagogo-Jack for his outstanding leadership and service to the Association.
    MeSH term(s) Biomedical Research ; Diabetes Mellitus/prevention & control ; Global Health ; Humans ; Quality of Life
    Language English
    Publishing date 2015-11-25
    Publishing country United States
    Document type Address ; Journal Article
    ZDB-ID 441231-x
    ISSN 1935-5548 ; 0149-5992
    ISSN (online) 1935-5548
    ISSN 0149-5992
    DOI 10.2337/dc15-1818
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  9. Article ; Online: Philip E. Cryer, MD: Seminal Contributions to the Understanding of Hypoglycemia and Glucose Counterregulation and the Discovery of HAAF (Cryer Syndrome).

    Dagogo-Jack, Samuel

    Diabetes care

    2015  Volume 38, Issue 12, Page(s) 2193–2199

    Abstract: Optimized glycemic control prevents and slows the progression of long-term complications in patients with type 1 and type 2 diabetes. In healthy individuals, a decrease in plasma glucose below the physiological range triggers defensive counterregulatory ... ...

    Abstract Optimized glycemic control prevents and slows the progression of long-term complications in patients with type 1 and type 2 diabetes. In healthy individuals, a decrease in plasma glucose below the physiological range triggers defensive counterregulatory responses that restore euglycemia. Many individuals with diabetes harbor defects in their defenses against hypoglycemia, making iatrogenic hypoglycemia the Achilles heel of glycemic control. This Profile in Progress focuses on the seminal contributions of Philip E. Cryer, MD, to our understanding of hypoglycemia and glucose counterregulation, particularly his discovery of the syndrome of hypoglycemia-associated autonomic failure (HAAF).
    MeSH term(s) Autonomic Nervous System Diseases/etiology ; Autonomic Nervous System Diseases/history ; Autonomic Nervous System Diseases/metabolism ; Blood Glucose/analysis ; Blood Glucose/metabolism ; Diabetes Complications/complications ; Diabetes Complications/history ; Endocrinology/history ; History, 20th Century ; Humans ; Hypoglycemia/complications ; Hypoglycemia/history ; Hypoglycemia/metabolism ; Hypoglycemia/physiopathology ; Syndrome ; United States
    Chemical Substances Blood Glucose
    Language English
    Publishing date 2015-07-15
    Publishing country United States
    Document type Biography ; Historical Article ; Journal Article ; Portrait ; Research Support, N.I.H., Extramural
    ZDB-ID 441231-x
    ISSN 1935-5548 ; 0149-5992
    ISSN (online) 1935-5548
    ISSN 0149-5992
    DOI 10.2337/dc15-0533
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  10. Article ; Online: Racial differences in measures of glycemia in the Vitamin D and Type 2 Diabetes (D2d) Study: a secondary analysis of a randomized trial.

    LeBlanc, Erin S / Pittas, Anastassios G / Nelson, Jason / Chatterjee, Ranee / Rasouli, Neda / Rhee, Mary K / Pratley, Richard E / Desouza, Cyrus V / Neff, Lisa M / Peters, Anne M / Dagogo-Jack, Samuel / Hsia, Daniel S

    BMJ open diabetes research & care

    2024  Volume 12, Issue 1

    Abstract: Introduction: Understanding how race may influence the association between A1c and glycemia can improve diabetes screening. We sought to determine whether, for a given A1c level, glucose levels during an oral glucose tolerance test (OGTT) differed by ... ...

    Abstract Introduction: Understanding how race may influence the association between A1c and glycemia can improve diabetes screening. We sought to determine whether, for a given A1c level, glucose levels during an oral glucose tolerance test (OGTT) differed by race.
    Research design and methods: From data collected at 22 US clinical sites, we conducted a cross-sectional study of concurrently measured A1c and OGTT and observational longitudinal follow-up of the subset with high-risk pre-diabetes. Numerical integration methods were used to calculate area under the glycemic curve (AUC
    Results: 1016 black, 2658 white, and 193 Asian persons at risk of diabetes were included in cross-sectional analysis. Of these, 2154 with high-risk pre-diabetes were followed for 2.5 years. For a given A1c level, AUC
    Conclusions: Use of additional testing beyond A1c to screen for diabetes may better stratify diabetes risk in the diverse US population.
    MeSH term(s) Humans ; Diabetes Mellitus, Type 2/epidemiology ; Diabetes Mellitus, Type 2/diagnosis ; Prediabetic State/epidemiology ; Prediabetic State/diagnosis ; Vitamin D ; Cross-Sectional Studies ; Glycated Hemoglobin ; Blood Glucose/analysis ; Race Factors ; Vitamins ; White
    Chemical Substances Vitamin D (1406-16-2) ; Glycated Hemoglobin ; Blood Glucose ; Vitamins
    Language English
    Publishing date 2024-02-12
    Publishing country England
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 2732918-5
    ISSN 2052-4897 ; 2052-4897
    ISSN (online) 2052-4897
    ISSN 2052-4897
    DOI 10.1136/bmjdrc-2023-003613
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