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  • 1
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 106, No. 2 ( 2021-01-23), p. 372-387
    Abstract: Glycogen storage diseases are rare. Increased glycogen in the liver results in increased attenuation. Objective Investigate the association and function of a noncoding region associated with liver attenuation but not histologic nonalcoholic fatty liver disease. Design Genetics of Obesity-associated Liver Disease Consortium. Setting Population-based. Main Outcome Computed tomography measured liver attenuation. Results Carriers of rs4841132-A (frequency 2%-19%) do not show increased hepatic steatosis; they have increased liver attenuation indicative of increased glycogen deposition. rs4841132 falls in a noncoding RNA LOC157273 ~190 kb upstream of PPP1R3B. We demonstrate that rs4841132-A increases PPP1R3B through a cis genetic effect. Using CRISPR/Cas9 we engineered a 105-bp deletion including rs4841132-A in human hepatocarcinoma cells that increases PPP1R3B, decreases LOC157273, and increases glycogen perfectly mirroring the human disease. Overexpression of PPP1R3B or knockdown of LOC157273 increased glycogen but did not result in decreased LOC157273 or increased PPP1R3B, respectively, suggesting that the effects may not all occur via affecting RNA levels. Based on electronic health record (EHR) data, rs4841132-A associates with all components of the metabolic syndrome (MetS). However, rs4841132-A associated with decreased low-density lipoprotein (LDL) cholesterol and risk for myocardial infarction (MI). A metabolic signature for rs4841132-A includes increased glycine, lactate, triglycerides, and decreased acetoacetate and beta-hydroxybutyrate. Conclusions These results show that rs4841132-A promotes a hepatic glycogen storage disease by increasing PPP1R3B and decreasing LOC157273. rs4841132-A promotes glycogen accumulation and development of MetS but lowers LDL cholesterol and risk for MI. These results suggest that elevated hepatic glycogen is one cause of MetS that does not invariably promote MI.
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
    RVK:
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2021
    detail.hit.zdb_id: 2026217-6
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  • 2
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 103, No. 2 ( 2018-02-01), p. 681-688
    Abstract: Studies of the possible cardiovascular risk of testosterone treatment are inconclusive. Objective To determine the effect of testosterone treatment on cardiovascular biomarkers in older men with low testosterone. Design Double-blind, placebo-controlled trial. Setting Twelve academic medical centers in the United States. Participants In all, 788 men ≥65 years old with an average of two serum testosterone levels & lt;275 ng/dL who were enrolled in The Testosterone Trials. Intervention Testosterone gel, the dose adjusted to maintain the testosterone level in the normal range for young men, or placebo gel for 12 months. Main Outcome Measures Serum markers of cardiovascular risk, including lipids and markers of glucose metabolism, fibrinolysis, inflammation, and myocardial damage. Results Compared with placebo, testosterone treatment significantly decreased total cholesterol (adjusted mean difference, −6.1 mg/dL; P & lt; 0.001), high-density lipoprotein cholesterol (adjusted mean difference, −2.0 mg/dL; P & lt; 0.001), and low-density lipoprotein cholesterol (adjusted mean difference, −2.3 mg/dL; P = 0.051) from baseline to month 12. Testosterone also slightly but significantly decreased fasting insulin (adjusted mean difference, −1.7 µIU/mL; P = 0.02) and homeostatic model assessment‒insulin resistance (adjusted mean difference, −0.6; P = 0.03). Testosterone did not change triglycerides, d-dimer, C-reactive protein, interleukin 6, troponin, glucose, or hemoglobin A1c levels more than placebo. Conclusions and Relevance Testosterone treatment of 1 year in older men with low testosterone was associated with small reductions in cholesterol and insulin but not with other glucose markers, markers of inflammation or fibrinolysis, or troponin. The clinical importance of these findings is unclear and requires a larger trial of clinical outcomes.
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
    RVK:
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2018
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  • 3
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 100, No. 9 ( 2015-09), p. 3304-3312
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
    RVK:
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2015
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  • 4
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 103, No. 11 ( 2018-11-01), p. 4304-4314
    Abstract: Sex hormones may influence sex differences in cardiovascular disease (CVD). N-terminal pro–B-type natriuretic peptide (NT-proBNP), a predictor of CVD, is higher in women than men, which may relate to sex hormones. Objective To evaluate whether total testosterone (T), bioavailable T, free T, estradiol, dehydroepiandrosterone (DHEA), and SHBG are associated with NT-proBNP. Design Cohort study. Participants Cross-sectional sample included 2371 postmenopausal women and 2688 men free of CVD, of which 2041 women and 2348 men were included longitudinally. Main Outcome Measures NT-proBNP at baseline (2000 to 2002) and one or more repeat NT-proBNPs (through 2012). Analyses adjusted for CVD risk factors. Results Women had higher NT-proBNP than men (median 79.9 vs 38.5 pg/mL). Cross-sectionally, higher bioavailable T, free T, DHEA, and lower SHBG levels were independently associated with lower NT-proBNP among both women and men (all P & lt; 0.05). Higher total T in women and estradiol in men were also associated with lower NT-proBNP (both P & lt; 0.05). Longitudinally, in women, higher total T, bioavailable T, free T, DHEA, and lower estradiol and SHBG were associated with greater 10-year increase in NT-proBNP (all P & lt; 0.05). In men, higher free T and estradiol were associated with greater NT-proBNP increase (both P & lt; 0.05). Conclusions A more androgenic sex hormone pattern was inversely associated with NT-proBNP cross-sectionally and may contribute to sex differences in NT-proBNP. Longitudinally, a more androgenic sex hormone pattern was associated with greater increase in NT-proBNP in women, which may reflect a mechanism for CVD risk after menopause.
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
    RVK:
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2018
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  • 5
    Online Resource
    Online Resource
    The Endocrine Society ; 2023
    In:  Journal of the Endocrine Society Vol. 7, No. Supplement_1 ( 2023-10-05)
    In: Journal of the Endocrine Society, The Endocrine Society, Vol. 7, No. Supplement_1 ( 2023-10-05)
    Abstract: Disclosure: T.C. Friedman: None. P. Duran: None. M.J. Budoff: None. M. Shaheen: None. Obesity is highly prevalent in the U.S., particularly among ethnic minority groups. The purpose was using a randomized trial of 12-months to evaluate if coronary artery calcium (CAC) scores will decline in the medical arm compared to the dietitian-led arm and the control arm. Adult patients were recruited from LAC-DHS and randomized to medical group visit (n=58), dietitian individual visit (n=18) and control (n=50) groups. We measured the total CAC score and left anterior descending [LAD] scores using cardiac computed tomography to quantify CAC. We analyzed data for the change from baseline in the CAC scores between groups using the Kruskal Wallis test. We categorized the total CAC scores into 0-100 (no/mild risk); 101-400 (moderate risk); and & gt; 400 (severe risk) and the LAD score into 0-99 (no/mild risk); 100-300 (moderate risk); and & gt;300 (severe risk) and compared the groups using chi square or fisher exact test. P-value & lt;0.05 was statistically significant. No statistical difference was found between the study groups in the change of the total CAC score. The mean, median and IQR of the change in total CAC score were -26.4, 0.0,3.0 in the dietitian group; 21.6, 0.0, 10.0 in the medical group; 44.6, 3.0, 23.0 in the control group (p=0.10). At baseline and post-intervention, no significant differences were found between the study groups in the total CAC risk (p=0.22). The mean, median and inter-quartile range (IQR) of the change in LAD score were -23.6, 0.0, 2.0 in the dietitian group; 4.7, 0.0, 2.0 in the medical group; 12.5, 1.0, 9.8 in the control group (p=0.036). Significant improvements were found between the dietitian group and control group (p=0.039) and the medical group and control group (p=0.027). For LAD risk groups at baseline, 10%, 11.1% and 10.3% of the control, dietitian, and medical groups, respectively, had moderate risk; and 10.0%, 5.6%, and 1.7%, respectively, had severe risk (p=0.069). Post intervention, there was a reduction in the percent with moderate risk in the dietitian (-5.5%) and the medical (-1.7%) groups relative to control group (2.0%). For the severe risk, there was a reduction of 5.6% in the dietitian group, with no change in the medical group relative to 2% increase in the control group (p=0.013). Our study showed significant improvement in the LAD score and its risk groups in the dietitian group relative to the control and medical groups indicating that the dietitian intervention was able to attenuate the progression of atherosclerosis. The implications of our study is that lifestyle obesity interventions have the potential to reduce cardiovascular disease. Presentation: Thursday, June 15, 2023
    Type of Medium: Online Resource
    ISSN: 2472-1972
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2023
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  • 6
    In: Journal of the Endocrine Society, The Endocrine Society, Vol. 5, No. Supplement_1 ( 2021-05-03), p. A331-A331
    Abstract: Introduction: Ertugliflozin (ERTU), a sodium-glucose cotransporter 2 (SGLT2) inhibitor, is approved as an adjunct to diet and exercise to improve glycemic control in patients with type 2 diabetes mellitus (T2DM). Aim: As a pre-specified sub-study of the Phase 3 VERTIS CV trial (NCT01986881), the efficacy and safety of ERTU were assessed in patients with T2DM and established atherosclerotic cardiovascular disease (ASCVD) inadequately controlled with metformin and sulfonylurea (SU). Methods: Patients with T2DM, established ASCVD, and HbA1c 7.0–10.5% on stable metformin (≥1500 mg/day) and SU doses as defined per protocol were randomized to once-daily ERTU (5 mg or 15 mg) or placebo. The primary sub-study objectives were to assess the effect of ERTU on HbA1c compared with placebo and to evaluate safety and tolerability during 18-week follow-up. Key secondary endpoints included proportion of patients achieving HbA1c & lt;7%, fasting plasma glucose (FPG), body weight, and systolic blood pressure. Changes from baseline at Week 18 for continuous efficacy endpoints were assessed using a constrained longitudinal data analysis model. Results: Of the 8246 patients enrolled in the VERTIS CV trial, 330 patients were eligible for this sub-study (ERTU 5 mg, n=100; ERTU 15 mg, n=113; placebo, n=117). Patients had a mean (SD) age of 63.2 (8.4) years, T2DM duration 11.4 (7.4) years, estimated glomerular filtration rate 83.5 (17.8) mL/min/1.73 m2, and HbA1c 8.3% (1.0) (67.4 [10.6] mmol/mol). At Week 18, ERTU 5 mg and 15 mg were each associated with a significantly greater least squares mean (95% CI) HbA1c reduction from baseline versus placebo; the placebo-adjusted differences for ERTU 5 mg and 15 mg were –0.7% (–0.9, –0.4) and –0.8% (–1.0, –0.5), respectively (P & lt;0.001). A higher proportion of patients in each ERTU group achieved HbA1c & lt;7% relative to placebo (P & lt;0.001). ERTU significantly reduced FPG and body weight (P & lt;0.001, for each dose versus placebo), but not systolic blood pressure. Adverse events were reported in 48.0%, 54.9%, and 47.0% of patients in the ERTU 5 mg, 15 mg, and placebo groups, respectively. Genital mycotic infections were experienced by significantly higher proportions of male patients who received ERTU 5 mg and 15 mg (4.2% and 4.8%, respectively) versus placebo (0.0%; P≤0.05) and by a numerically, but not significantly, higher proportion of female patients who received ERTU 15 mg (10.3%) compared with placebo (3.8%) (P=0.36). The incidences of symptomatic hypoglycemia were 11.0% (5 mg), 12.4% (15 mg), and 7.7% (placebo), and of severe hypoglycemia 2.0% (5 mg), 1.8% (15 mg), and 0.9% (placebo). Conclusion: Among patients with T2DM and ASCVD, ERTU (5 mg and 15 mg) added to metformin and SU for 18 weeks improved glycemic control (HbA1c and FPG) and reduced body weight, and was generally well tolerated with a safety profile consistent with the SGLT2 inhibitor class.
    Type of Medium: Online Resource
    ISSN: 2472-1972
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2021
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  • 7
    Online Resource
    Online Resource
    The Endocrine Society ; 2017
    In:  The Journal of Clinical Endocrinology & Metabolism Vol. 102, No. 5 ( 2017-05-01), p. 1568-1577
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 102, No. 5 ( 2017-05-01), p. 1568-1577
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
    RVK:
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2017
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  • 8
    Online Resource
    Online Resource
    The Endocrine Society ; 2023
    In:  Journal of the Endocrine Society Vol. 7, No. Supplement_1 ( 2023-10-05)
    In: Journal of the Endocrine Society, The Endocrine Society, Vol. 7, No. Supplement_1 ( 2023-10-05)
    Abstract: Disclosure: H. Lee: None. S. Han: None. R.S. Swerdloff: None. Y. Pak: None. M.J. Budoff: None. C.C. Wang: None. The Effect of Testosterone Replacement Therapy on NAFLD in Elderly Hypogonadal Men Background: Aging increases body weight, visceral fat, insulin resistance and metabolic syndrome, leading to increased prevalence of nonalcoholic fatty liver disease(NAFLD) in elderly. Testosterone deficiency, more prevalent in elderly men, is associated with metabolic syndrome and increased visceral fat. The T Trials evaluated the effect of testosterone treatment on sexual function, physical function, and vitality. A substudy on the effect of testosterone on cardiovascular markers showed decrease in total cholesterol, LDL cholesterol, HDL cholesterol, fasting insulin level and HOMA-IR in testosterone treatment group compared to placebo. We hypothesized that testosterone replacement in elderly male with hypogonadism will improve NAFLD. Methods: Data from the T Trial was used to evaluate prevalence of NAFLD using 3 clinical scores in testosterone treatment group and placebo group; Lipid accumulation product (LAP) index, hepatic steatosis index (HSI) and NAFLD-MS score. A randomized sub-group of the placebo and testosterone treated subjects had cardiac CT (Computed tomography) that includes liver and spleen. Liver Hounsfield unit (HU) and spleen HU were obtained to evaluate NAFLD by CT criteria. Clinical liver fat scores and CT findings were evaluated at baseline and 12 months post treatment. Correlation between each liver fat score (LAP index, HSI and NAFLD-MS score) and liver CT findings were analyzed. Results: 502 male of age 65 and over with total testosterone & lt;275ng/dL were analyzed (testosterone group n= 246, placebo group n=233). Baseline testosterone levels were not different between the two groups at baseline. Testosterone level was increased by 285.5±266.4ng/dL in the treatment group compared to 1.98±73.6ng/dL in the placebo group (p= 0.0001). Prevalence of NAFLD in elderly hypogonadal men by LAP index, HSI and NAFLD-MS were 89.77%, 88.93% and 3.96% respectively. 30% of subjects had liver HU & lt;40, 21.36% had liver-to-spleen HU ratio (LSR) & lt;1. There were no statistically significant changes in liver fat scores and CT findings in each arm at baseline and after 12 months treatment. Subgroup analysis on subjects with NAFLD defined by LAP index, liver HU or LSR did not show improvement of NAFLD after 12 months of testosterone replacement. Among the 3 liver fat scores, only LAP index showed inverse correlation with liver HU. Conclusion: Our study did not show improvement of NAFLD in elderly hypogonadal male after 12 months of testosterone replacement compared to placebo, assessed by lipid accumulation product index, hepatic steatosis index, NAFLD-MS score, liver HU and liver-to-spleen ratio. Future studies with longer treatment duration and additional modalities to define NAFLD as primary outcome may be warranted. Presentation Date: Saturday, June 17, 2023
    Type of Medium: Online Resource
    ISSN: 2472-1972
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2023
    detail.hit.zdb_id: 2881023-5
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  • 9
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 106, No. 11 ( 2021-10-21), p. e4746-e4765
    Abstract: There is little information about fatty liver in prediabetes as it transitions to early diabetes. Objective This study is aimed at evaluating the prevalence and determinants of fatty liver in the Diabetes Prevention Program (DPP). Methods We measured liver fat as liver attenuation (LA) in Hounsfield units (HU) in 1876 participants at ~14 years following randomization into the DPP, which tested the effects of lifestyle or metformin interventions versus standard care to prevent diabetes. LA was compared among intervention groups and in those with versus without diabetes, and associations with baseline and follow-up measurements of anthropometric and metabolic covariates were assessed. Results There were no differences in liver fat between treatment groups at 14 years of follow-up. Participants with diabetes had lower LA (mean ± SD: 46 ± 16 vs 51 ± 14 HU; P & lt; 0.001) and a greater prevalence of fatty liver (LA & lt; 40 HU) (34% vs 17%; P & lt; 0.001). Severity of metabolic abnormalities at the time of LA evaluation was associated with lower LA categories in a graded manner and more strongly in those with diabetes. Averaged annual fasting insulin (an index of insulin resistance [OR, 95% CI 1.76, 1.41-2.20]) waist circumference (1.63, 1.17-2.26), and triglyceride (1.42, 1.13-1.78), but not glucose, were independently associated with LA & lt; 40 HU prevalence. Conclusion Fatty liver is common in the early phases of diabetes development. The association of LA with insulin resistance, waist circumference, and triglyceride levels emphasizes the importance of these markers for hepatic steatosis in this population and that assessment of hepatic fat in early diabetes development is warranted.
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
    RVK:
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2021
    detail.hit.zdb_id: 2026217-6
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  • 10
    In: Endocrine Reviews, The Endocrine Society, Vol. 39, No. 3 ( 2018-06-01), p. 369-386
    Type of Medium: Online Resource
    ISSN: 0163-769X , 1945-7189
    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2018
    detail.hit.zdb_id: 2011701-2
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