Expression of aldosterone synthase CYP11B2 was inversely correlated with longevity

Publication date: Available online 8 April 2019Source: The Journal of Steroid Biochemistry and Molecular BiologyAuthor(s): Taiki Hayashi, Zhen Zhang, Ghaith Al-Eyd, Atsushi Sasaki, Masami Yasuda, Masafumi Oyama, Celso E. Gomez-Sanchez, Hirotaka Asakura, Tsugio Seki, Kuniaki Mukai, Koshiro NishimotoAbstractImmunohistochemistry of human aldosterone synthase (CYP11B2) has revealed that most of aldosterone is autonomously produced in aldosterone-producing cell clusters (APCCs) beneath the capsule of adult adrenals rather than physiologically in the zona glomerulosa (ZG). APCCs have been occasionally found to harbor a somatic mutation of ion channel/pump genes, and number and size of APCCs increase with age until 50 years old. Herein, the objective of the study was to examine APCC development in 106 autopsied adrenals from 85 elderly individuals who died at ages from 50 to 103 years. We obtained the following results: (1) physiological CYP11B2 expression in ZG were attenuated in more elderly persons; (2) number and size of APCCs decreased with age; (3) detachment of APCC from the capsule appeared to occur occasionally over the wide range of the ages; and (4) incidental micro aldosterone producing adenomas (APAs) and possible APCC-to-APA transitional lesions (pAATLs) were found primarily in samples from persons aged 50–60 years but not in samples from more elderly persons; pAATL was a putative designation based on our previous results indicating that it consisted of subcapsular A...
Source: The Journal of Steroid Biochemistry and Molecular Biology - Category: Biochemistry Source Type: research