Kidney function in patients with adrenal adenomas: A single-center retrospective cohort study

OBJECTIVE

Patients with nonfunctioning adrenal adenomas (NFA) and mild autonomous cortisol secretion (MACS) demonstrate an increased risk of chronic kidney disease (CKD), however factors associated with CKD are unknown. We aimed to identify the factors associated with CKD and assess the impact of adrenalectomy on kidney function in patients with NFA or MACS.

DESIGN

Single-center cohort study of patients with NFA and MACS, 1999-2020.

METHODS

MACS was diagnosed based on post-dexamethasone cortisol (DST) ≥ 1.8 mcg/dL. Age, sex, dysglycemia, hypertension, therapy with statin, angiotensin converting enzyme inhibitor, or angiotensin II receptor blocker were included in the multivariable analysis. Outcomes included estimated glomerular filtration rate (eGFR) at the time of diagnosis with MACS or NFA and post-adrenalectomy delta eGFR.

RESULTS

Of 972 patients, 429 (44%) had MACS and 543 (56%) had NFA. At the time of diagnosis, patients with MACS had lower eGFR (median 79.6 vs 83.8 ml/min/1.73m2, p < 0.001) than patients with NFA. In a multivariable analysis, factors associated with lower eGFR were older age, hypertension, and higher DST. In 204 patients (MACS: 155, 76% and NFA: 49, 24%) treated with adrenalectomy, post adrenalectomy eGFR improved in both groups starting at 18 months up to 3.5 years of follow up. Factors associated with increased eGFR were younger age, lower pre-adrenalectomy eGFR and longer follow-up period.

CONCLUSION

DST cortisol is an independent risk factor for lower eGFR in patients with adrenal adenomas. Both patients with MACS and NFA demonstrate an increase in eGFR post-adrenalectomy, especially younger patients with lower eGFR pre-adrenalectomy.

Etiology, morphology, and outcomes of adrenal calcifications in 540 adult patients-a retrospective single-center study

Sparse data are available on the etiology, morphology, clinical presentation, and outcomes of adrenal calcification. In this single-center retrospective study of 540 consecutive patients (median age 65 years, 45% women) with adrenal calcification on computed tomography (December 2017 to January 2021), most were discovered incidentally (472, 87%). The commonest etiology was idiopathic (389, 72%), followed by the adrenal tumor (113, 21%), hemorrhage (29, 5%), and infiltrative disease (7, 1%). Calcified adrenal tumors were predominantly benign (92, 81%) and primarily adenomas (63, 69%), whereas the most common calcified adrenal malignancy (16, 18%) was metastasis (12, 67%). Calcification (unilateral 94%, bilateral 6%) morphology varied from punctate (313, 58%) to coarse (165, 30%), linear/curvilinear (46, 9%), and rim-like (16, 3%). In summary, adrenal calcifications are usually incidentally discovered unilateral, punctate, or coarse lesions of unclear etiology. Most calcified adrenal tumors are benign and <20% malignant or pheochromocytomas.

Cardiovascular benefits and risks associated with calcium, vitamin D, and antiresorptive therapy in the management of skeletal fragility

Osteoporosis affects one in every five women over the age of 50 worldwide. With a rapidly ageing population, the prevalence of fragility fractures, considered a largely preventable consequence of osteoporosis, is expected to increase. Age is also a major risk for cardiovascular disease and mortality, thus highlighting the importance of cardiovascular profiling of osteoporosis interventions. Although calcium and vitamin D are essential for a healthy bone metabolism, excessive supplementation may be associated with increased risk. Conversely, early pre-clinical data have suggested a possible cardiovascular benefit from bisphosphonate therapy. This review evaluates the evidence behind the cardiovascular benefits and risks that may be associated with osteoporosis therapy.

OR12-4 Metabolic Profiling in Adrenal Tumors Demonstrates Enhanced Chronic Inflammation, Branched Chain Amino Acids and Ketone Bodies, Biomarkers that Predict High Cardiometabolic Risk

Background

Patients with adrenal hormone excess demonstrate an increased cardiovascular risk and mortality. We aimed to determine the impact of adrenal hormone excess on the metabolic profile that included plasma lipoproteins, total branched-chain amino acids (BCAA), ketone bodies, and GlycA (a proinflammatory glycoprotein biomarker). Method: We conducted a single-center cross-sectional study of consecutive patients with adrenal adenomas, Cushing syndrome (CS), and pheochromocytoma/paragangliomas (PPGL) between January 2015 and May 2021. Adrenal adenomas comprised nonfunctioning adenomas (NFA), adenomas with mild autonomous cortisol secretion (MACS), and primary aldosteronism (PA). Malignant and other benign tumors were excluded. Collected fasting plasma samples were measured using nuclear magnetic resonance spectroscopy for lipoproteins, BCCA, ketone bodies and GlycA. The results were compared to referent subjects from PREVEND (Prevention of Renal and Vascular End-stage Disease) study. Lipoprotein Insulin Resistance Index (LP-IR) which predicts incident diabetes was calculated based on 6 lipoprotein parameters.

Results

NFA (n=166, median age 60.1years, 63.3% women), MACS (n=158 (median age 61.8 years, 62. 0% women), CS (n=101, median age 43.8 years, 85.1% women), PA (n=71 (median age 55.8 years, 31. 0% women), PPGL (n=43, median age 55.5 years, 46.5% women) was diagnosed in 539 patients. Referent subjects (n=6540) were younger with a median age of 48.4, 50.2% women. When compared to referent subjects, and after age and sex-adjustment, GlycA was highest in patients with CS (OR 3.3, 95% CI 2.8-3.8), followed by PPGL (OR 2.3, 95%CI 1.8-2.9), MACS (OR 2, 95%CI 1.7-2.3), NFA (OR 1.9, 95%CI 1.7-2.2), and PA (OR 1.5, 95%CI 1.2-1.8). When compared to referent subjects, and after sex- and age adjustment, all patient groups demonstrated increase in BCAA: CS (OR 2.7 (95%CI 2.3-3.2), PPGL (OR 2.3, 95% CI 1.8-2.9), NFA (OR 2.4, 95% CI 2.1-2.7), PA (OR 2. 0, 95%CI 1.7-2.5), MACS (OR 2.2, 95% CI 1.7-2.6). Total ketone bodies were increased in patients with cortisol excess (OR of 1.4, 95%CI 1.2-1.5 in CS, and OR of 1.2, 95%CI 1-1.3 in MACS) and NFA (OR 1.2, 95%CI 1.1-1.3), but not in PA or PPGL. All patient groups except PPGL were more likely to have a higher LP-IR score. When compared to referent subjects, the highest sex- and age-adjusted LP-IR increase was in patients with CS (OR 1.9 (95%CI 1.5-2.2), followed by MACS (OR 1.4, 95% CI 1.2-1.7), PA (OR 1.4, 95%CI 1.1-1.8), and NFA (OR 1.4, 95% CI 1.2-1.7).

Conclusion

Patient with adrenal adenomas and PPGL demonstrate an increase in GlycA, BCAA, and ketone bodies - biomarkers associated with adverse cardiometabolic disorders and mortality. All patients except those with PPGL also demonstrated a higher LP-IR index that was reported to predict incident diabetes. Patients with NFA demonstrated an adverse metabolic profile similar to patients with MACS.

Presentation: Sunday, June 12, 2022 11:45 a.m. - 12:00 p.m.

Prediction of cardiovascular outcome by estimated glomerular filtration rate among high-risk patients: a Thai nationwide cohort study

BACKGROUND

Decline of estimated glomerular filtration rate (eGFR) is associated with increased cardiovascular (CV) morbidity and mortality, but the predictive value of different eGFR on CV outcomes is limited in Southeast Asian populations.

AIMS

We aimed to stratify CV outcomes according to renal function among Thai patients with high atherosclerosis risk.

METHODS

We performed a secondary analysis in a 5-year national cohort entitled "CORE-Thailand study." Subjects were classified in 6 groups according to baseline kidney function: group I, eGFR ≥ 90; group II, eGFR 60-89; group IIIa, eGFR 45-59; group IIIb, eGFR 30-44; group IV, eGFR 15-29; group V, eGFR < 15 ml/min/1.73 m² or receiving renal replacement therapy. The primary outcome was 4-point major adverse cardiovascular events (MACE). Secondary outcomes included all-cause mortality, CV mortality, hospitalization for heart failure, nonfatal myocardial infarction, and nonfatal stroke.

RESULTS

A total of 6376 subjects (3467 men and 2909 women) were categorized in 6 groups. After adjusting covariates in the Cox proportional hazards model, compared to group I, subjects in groups II-V had a 1.65-fold, 2.17-fold, 2.67-fold, 4.24-fold, and 4.87-fold risk for 4-point MACE, respectively, with statistical significance at P < 0.05 in all groups. Kaplan-Meier analysis illustrated stepwise lower survivals from 4-point MACE following the groups with lower baseline eGFR (log-rank test with P < 0.001). All secondary outcomes showed similar trends as the primary outcome, except nonfatal stroke.

CONCLUSION

Lower baseline kidney function was independently associated with increased risk of CV events and all-cause mortality in Thai populations at high CV risk.

Association of body mass index with kidney function and mortality in high cardiovascular risk population: A nationwide prospective cohort study

BACKGROUND

There is increasing awareness of the impact of obesity and underweight on cardiovascular (CV) disease, chronic kidney disease (CKD) and mortality. Abnormal body mass index (BMI) might be associated with worse clinical outcomes, including CKD progression, but limited evidence exists among Asian patients with high CV risk.

OBJECTIVE

To investigate the association of BMI with progressive loss of kidney function and all-cause mortality in Thai patients with high CV risk.

METHODS

In a national cohort of 5887 high CV risk subjects, we assessed the association of high BMI with the composite renal outcome (estimated glomerular filtration rate [eGFR] decline over 40%, eGFR less than 15 mL/min/1.73 m² , doubling of serum creatinine, initiation of dialysis and death related to renal causes) and with all-cause mortality in Cox proportional hazards models.

RESULTS

A total of 5887 participants (3217 male and 2670 female) with high CV risk were enrolled. Participants were classified into five groups by their baseline BMI; <20 kg/m² (n = 482), 20-24.9 kg/m² (n = 2437), 25-29.9 kg/m² (n = 2140), 30-34.9 kg/m² (n = 665) and 35 kg/m² (n = 163), respectively. On multivariate analysis of Cox proportional hazards models, adjusted for other covariates, baseline BMI ≥35 kg/m² was an independent predictor of loss of kidney function (HR 1.60, 95% CI 1.04-2.40) and all-cause mortality (HR 2.68, 95% CI 1.50-4.80). Baseline BMI <20 kg/m² was an independent predictor of all-cause mortality as well (adjusted HR 2.26, 95% CI 1.50-3.42).

CONCLUSION

In the high CV risk Thai population, a BMI of 35 kg/m² or more is associated with loss of kidney function and mortality. On the other hand, a BMI less than 20 kg/m² is also associated with all-cause mortality.

Urine albumin dipstick independently predicts cardiovascular and renal outcomes among rural Thai population: a 14-year retrospective cohort study

Background

Albuminuria is an established risk marker for both cardiovascular and renal outcomes. In this study, we expected to use portable and inexpensive test strips to detect urine albumin level for risk stratification in cardiovascular and renal outcomes among rural Thai community.

Objective

To evaluate the relationship between urine albumin dipstick and cardiovascular and renal complications in rural Thai population.

Methods

We conducted a retrospective study in 635 rural Thai adults who tested urine albuminuria by using commercial urine albumin dipstick and the Micral-albumin test II strips at baseline. The subjects were divided into normoalbuminuria (albumin < 20 mg/L), microalbuminuria (albumin 20–200 mg/L), or macroalbuminuria (Urine dipstick at least 1+ or albumin > 200 mg/L). We collected data on the incidences of primary composite outcomes including cardiovascular or renal morbidity and mortality. Incident density and cox regression were analyzed to evaluate the association between albuminuria status and primary composite outcome.

Results

During an average 14-year follow-up, 102 primary composite events occurred including 59 (13.1%), 32 (20.6%) and 11 (39.3%) among 452, 155, and 28 subjects with normoalbuminuria, microalbuminuria, and macroalbuminuria, respectively. Incident densities of primary composite outcome were elevated continually according to the degree of albuminuria (9.36, 17.11 and 38.12 per 1000 person-years). Compared with the subjects without albuminuria, subjects with microalbuminuria and macroalbuminuria at baseline had higher risk for primary composite outcome in univariate model. After multivariate analysis was performed, the effect of macroalbuminuria was only persisted with 3.13-fold risk (adjusted HR 3.13; 95% CI 1.40–6.96, P= 0.005).

Conclusion

Albuminuria from semi-quantitative methods is an important factor predicting cardiovascular and renal risk among subjects in Thai rural population. Our findings support to also incorporating urine albumin dipstick into assessments of cardiovascular risk in the general population.

Incidence and Associated Factors of Type 2 Diabetes: A Community-Based Cohort Study in the Central Region of Rural Community in Thailand

The present study aimed to evaluate the incidence of type 2 diabetes mellitus (T2DM) and associated risk factors among adults in a rural community of Thailand. A prospective cohort study was conducted in a rural community of Thailand. Among 1358 nondiabetics ≥18 years, fasting plasma glucose (FPG) was measured at baseline in 2008 to 2010 and at follow-up evaluation in 2015. After follow-up of 5213 person-years, 122 new cases of T2DM were ascertained corresponding to cumulative incidence of 23.40 per 1000 person-years. The independent factors associated with T2DM were age, male, prehypertension, hypertension, waist circumference, and impaired FPG. The incidence of T2DM in Thailand is high, and many risk factors are converging. The focus of public health efforts should be on abdominal obesity, hypertension, and impaired FPG. Special attention in terms of preventive strategies must be paid to individuals with impaired FPG, as this state is the most prominent predictor of developing T2DM.