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Background: This study profiles ceramides extracted from visceral and subcutaneous adipose tissue of human subjects by liquid chromatography‐mass spectrometry to determine a correlation with status of diabetes and gender. Methods: Samples of visceral and abdominal wall subcutaneous adipose tissue (n = 36 and n = 31, respectively) were taken during laparoscopic surgery from 36 patients (14 nondiabetic, 22 diabetic and prediabetic) undergoing bariatric surgery with a body mass index (BMI) >35 kg/m2 with ≥1 existing comorbidity or BMI ≥40 kg/m2. Sphingolipids were extracted and analyzed using liquid chromatography‐mass spectrometry. Results: After logarithm 2 conversion, paired analysis of visceral to subcutaneous tissue showed differential accumulation of Cer(d18:1/16:0), Cer(d18:1/18:0), and Cer(d18:1/24:1) in visceral tissue of prediabetic/diabetic female subjects, but not in males. Within‐tissue analysis showed higher mean levels of ceramide species linked to insulin resistance, such as Cer(d18:1/18:0) and Cer(d18:1/16:0), in visceral tissue of prediabetic/diabetic patients compared with nondiabetic subjects and higher content of Cer(d18:1/14:0) in subcutaneous tissue of insulin‐resistant female patients compared with prediabetic/diabetic males. Statistically significant differences in mean levels of ceramide species between insulin‐resistant African American and insulin‐resistant Caucasian patients were not evident in visceral or subcutaneous tissue. Conclusions: Analysis of ceramides is important for developing a better understanding of biological processes underlying type 2 diabetes, metabolic syndrome, and obesity. Knowledge of the accumulated ceramides/dihydroceramides may reflect on the prelipolytic state that leads the lipotoxic phase of insulin resistance and may shed light on the predisposition to insulin resistance by gender. [ABSTRACT FROM AUTHOR]

Background: Metabolic syndrome (MetS) is highly prevalent worldwide, and its individual components obesity, diabetes, and hypertension have been identified as risk factors to develop severe coronavirus disease 2019 (COVID‐19); however, data on MetS and clinical outcomes in COVID‐19 are scarce. This study aims to determine association between MetS and severe disease outcomes, that is, mortality, need for mechanical ventilation, and intensive care unit (ICU) requirement among patients with COVID‐19. Methods: This is a retrospective multihospital cohort study on 1871 patients with confirmed COVID‐19 diagnosis. Patient data including demographics, comorbidities, body mass index (BMI), smoking, laboratory data, and the clinical course of hospitalization were collected. Multivariable regression was performed adjusting for age, sex, race, insurance, smoking, and comorbidities. Results: A total of 1871 patients (median age 66 [interquartile range, IQR 54‐75]; 965 (51.6%) males; 1494 (80%) African Americans; median BMI 29.4 kg/m2 [IQR 25‐35.8]; 573 (30.6%) patients with MetS) were included. Patients with MetS had increased mortality (odds ratio [OR], 1.40; 95% CI, 1.11‐1.75; P =.004), higher ICU admission (OR, 1.68; 95% CI, 1.36‐2.08; P <.001), and increased need for mechanical ventilation (OR, 1.90; 95% CI, 1.52‐2.37; P <.001). Among individual comorbidities, diabetes had significant association with mortality (OR, 1.30; 95% CI, 1.05‐1.63; P = 0.02), ICU admission (OR, 1.56; 95% CI, 1.27‐1.93; P <.001), and need for mechanical ventilation (OR, 1.63; 95% CI, 1.30‐2.03; P <.001). Conclusions: MetS is a better prognostic indicator for severe disease outcomes in patients with COVID‐19 than its individual components. Patients with MetS had significantly higher mortality, increased ICU admissions, and need for mechanical ventilation. [ABSTRACT FROM AUTHOR]