Publications by authors named "Sunthornyothin Sarat"

Resistant hypertension (RH) includes hypertensive patients with uncontrolled blood pressure (BP) while receiving ≥3 BP-lowering medications or with controlled BP while receiving ≥4 BP-lowering medications. The exact prevalence of RH is challenging to quantify. However, a reasonable estimate of true RH is around 5% of the hypertensive population.

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Context: Primary aldosteronism is a form of low-renin hypertension characterized by dysregulated aldosterone production.

Objective: To investigate the contributions of renin-independent aldosteronism and ACTH-mediated aldosteronism in individuals with a low-renin phenotype representing the entire continuum of blood pressure.

Design/participants: Human physiology study of 348 participants with a low-renin phenotype with severe and/or resistant hypertension, hypertension with hypokalemia, elevated blood pressure and stage I/II hypertension, and normal blood pressure.

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Context: While guidelines have been formulated for the management of primary aldosteronism (PA), following these recommendations may be challenging in developing countries with limited health care access.

Objective: We aimed to assess the availability and affordability of health care resources for managing PA in the Association of Southeast Asian Nations (ASEAN) region, which includes low-middle-income countries.

Methods: We instituted a questionnaire-based survey to specialists managing PA, assessing the availability and affordability of investigations and treatment.

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There are limited data regarding bone health in older people living with HIV (PWH), especially those of Asian ethnicity. We aimed to determine whether BMD in well-suppressed HIV-infected men and women aged ≥ 50 years are different from HIV-uninfected controls. In a cross-sectional study, BMD by dual-energy X-ray absorptiometry and calciotropic hormones were measured.

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Objective: Hypothalamic-pituitary-adrenal axis stimulation during pregnancy complicates the investigation of Cushing's syndrome (CS). Our objective was to present the case of a pregnant patient with CS caused by a pituitary tumor in whom the desmopressin stimulation test helped in the diagnosis and led to appropriate management.

Case Report: A 27-year-old woman with 9-week gestation presented with a 2-month history of proximal myopathy.

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Introduction: acromegaly, an overproduction of growth hormone (GH), is associated with high rate of morbidity and mortality particularly in case of delayed in diagnosis and treatment. A wide variation of clinical presentations, treatment outcomes and morbidities have been reported.

Methods: a retrospective study was conducted to review clinical characteristics and treatment outcomes of patients with acromegaly treated in King Chulalongkorn Memorial Hospital, Bangkok, Thailand, between 2006 and 2018.

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Background: Overactivation of renin-aldosterone-angiotensin system (RAS) is part of the pathogenesis of obesity-associated hypertension. Evidences have shown that weight loss can result in reduction in blood pressure and RAS. This study was aim to investigate changes of plasma aldosterone concentration (PAC) after bariatric surgery.

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The most common subtype of endogenous Cushing's syndrome (CS) is Cushing's disease (CD), with higher proportions of adrenal CS reported from Asia, compared to other continents. However, little was known about CS in this territory. This study was to investigate the distribution, clinical characteristics, and treatment outcomes of CS in a single tertiary hospital in Thailand.

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There are limited data regarding long-term BMD changes over time among treatment-naïve people living with HIV (PLHIV) after initiating combined antiretroviral therapy (cART) in Asia. We aimed to study bone mineral density (BMD) changes among treatment-naïve PLHIV started treatment with tenofovir disoproxil fumarate (TDF)- or non-TDF-containing regimen and HIV-uninfected controls in an Asian setting. The study was a five-year prospective study.

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Thyrotoxic periodic paralysis is an unusual neurological manifestation of thyrotoxicosis, and even rarer when it occurs in thyrotropin-secreting pituitary adenoma, only 6 cases having been previously reported. We describe a case of pituitary microadenoma with clinical syndromes of thyrotoxicosis complicated with hypokalemic periodic paralysis. Clinical manifestations and proposed management are discussed.

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There are limited studies regarding bone health among people living with HIV (PLHIV) in Asia. We compared bone mineral density (BMD), serum 25-hydroxyvitamin D (25(OH)D) status and bone turnover markers (serum procollagen type1 N-terminal propeptide (P1NP), osteocalcin (OC) and C-terminal cross-linking telopeptide of type1 collagen) among 302 antiretroviral therapy (ART) naive PLHIV compared to 269 HIV-uninfected controls from Thailand. People aged ≥30 years, with and without HIV infection (free of diabetes, hypertension, and active opportunistic infection) were enrolled.

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Somatic mutations result in excess aldosterone production and are reported to be more common in Asia than elsewhere. To assess the prevalence of somatic mutations in Thai patients with aldosterone-producing adrenal adenomas (APAs) in a single tertiary center, we analyzed the paraffin-embedded tissue of mutations from 96 patients with sporadic APAs who underwent unilateral laparoscopic adrenalectomy at our center during 2007 to 2016. We also assessed the clinical characteristics, treatment outcomes, and biochemistry and histologic differences among patients with and without somatic mutations.

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Article Synopsis
  • - Ketosis-prone diabetes (KPDM) occurs when non-type 1 diabetes patients experience diabetic ketoacidosis without known triggers; some can stop insulin treatment after management, but reasons for this are still being studied.
  • - In a study comparing 20 KPDM patients to 12 type 1 diabetics (T1DM), KPDM patients showed higher triglycerides and C3 levels at baseline, but those who stopped insulin had lower non-esterified fatty acids (NEFA) than those who continued insulin treatment.
  • - The findings indicate that even though KPDM-ins patients had more body fat, they exhibited better insulin sensitivity, illustrated by decreased NEFA levels and different profiles of Acylation Stimulating Protein (ASP)
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Pituitary metastasis is an uncommon first presentation of systemic malignancy. The most common presenting symptom of pituitary metastasis is diabetes insipidus reflecting involvement of the stalk and/or posterior pituitary. We herein present a unique case of the coexistence of both a functioning pituitary adenoma (prolactinoma) and pituitary metastasis of advanced colorectal cancer with pituitary apoplexy as the first manifestation of underlying malignancy.

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The coexistence of pheochromocytoma and renal artery stenosis had been reported occasionally from the possible mechanism of catecholoamine-induced vasospasm and extrinsic compression of renal artery in some reported cases. However, renal infarction caused by pheochromocytoma is an uncommon phenomenon. Herein, we report an interesting case of adrenal pheochromocytoma associated with renal artery thrombosis, which should be included in the differential diagnosis of pheochromocytoma patients who present with abdominal pain.

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Although hypertension occurring during pregnancies is not uncommon and its prognosis is generally excellent, some of its unusual causes can lead to catastrophic consequences, especially in undiagnosed cases. Here, we report a pregnant woman who presented with hypertension in her early pregnancy. It was subsequently found to be caused by bilateral pheochromocytoma.

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A retrospective review was conducted of medical records of newly diagnosed diabetes in adults who presented with DKA between 2003 and 2007. The majority of DKA in Thailand could not be classified as classical type 1 diabetes. Some newly diagnosed people presenting with DKA could be safely withdrawn from insulin treatment.

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Background: Pheochromocytoma manifesting during pregnancy is uncommon but it is responsible for a high maternal and fetal mortality rate, especially when unrecognized. Most cases of pheochromocytoma are sporadic but they can be part of hereditary autosomal dominant syndromes.

Case: We describe a case of bilateral pheochromocytoma in a term-pregnant patient with a previous history of medullary thyroid carcinoma (MTC).

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Background: Serum insulin-like growth factor (IGF)-I level is growth hormone (GH) dependent and reflects GH secretion. Analysis of IGF-I is a component in the diagnosis of GH-related disorders and is going to be of interest in determining the risk of many disorders such as cancer or atherosclerosis. The diagnosis value of IGF-I is dependent on the establishment of an accurate reference ranges, which can be affected by parameters such as age, gender, ethnicity, medications, chronic illness, or assay methodologies.

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Background: The most common endocrine disorder in patients with human immunodeficiency virus (HIV) is adrenocortical dysfunction. The prevalence of adrenal insufficiency in patients with AIDS is unclear; partly due to different tests, doses of adrenocorticotrophic hormone (ACTH), and criteria used. In addition, there is controversy regarding the assessment of adrenal insufficiency in patients with and without critical illness.

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Fibrocalculous pancreatitis diabetes (FCPD), a late stage of tropical chronic pancreatitis (TCP), is classified as a secondary cause of diabetes mellitus resulting from pancreatic exocrine dysfunction. The distinctive features of FCPD and TCP are young age at onset, presence of large intraductal pancreatic calculi, and reported mainly in tropical developing countries. Their etiology is still obscure, but the autodigestion due to aberrant intraductal activation of zymogens by trypsin is thought to be a primary common event.

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