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Thrombospondin expression in aldosterone-producing adenomas. 2002

Haruhiko Hatakeyama, and Makoto Nishizawa, and Atsushi Nakagawa, and Shigeru Nakano, and Toshikazu Kigoshi, and Isamu Miyamori, and Kenzo Uchida
Department of Internal Medicine, Kanazawa Medical University, Ishikawa, Japan. hataha@kanazawa-med.ac.jp

Thrombospondin (TSP) 1 and 2 are extracellular matrix proteins that appear to play a role in cell adhesion and cell migration. It has been demonstrated that the pattern of TSP expression is shifted from TSP1 to TSP2 under adrenocorticotrophic hormone treatment in bovine adrenocortical cells. We investigated the expression in human adrenal tissues by Northern blot analysis and correlated these data with the expression of the adrenocorticotrophic hormone-receptor (ACTH-R). All adrenal tissues (control adrenals, nonfunctional adenomas and ACTH-dependent aldosterone-producing adenomas (APA)) expressed both TSP1 and TSP2 mRNAs. Compared to control adrenals (TSP1 and TSP2 expression = 100 +/- 12%, respectively), TSP1 expression was negatively (51 +/- 10%, p < 0.01) and TSP2 expression was positively (289 +/- 36%, p < 0.01) regulated in APA. No significant differences in TSP1 and TSP2 expressions were found between control adrenals and nonfunctional adenomas. In APA, TSP1 (r = -0.86, p<0.01) and TSP2 (r = 0.88, p < 0.01) expressions correlated closely with the expression of ACTH-R. These results suggest that ACTH activity plays an important role in regulating the expression of TSPs in human adrenal tissues. We speculate that the shift of expression observed in APA may be associated with the phenotype of the tumors.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000236 Adenoma A benign epithelial tumor with a glandular organization. Adenoma, Basal Cell,Adenoma, Follicular,Adenoma, Microcystic,Adenoma, Monomorphic,Adenoma, Papillary,Adenoma, Trabecular,Adenomas,Adenomas, Basal Cell,Adenomas, Follicular,Adenomas, Microcystic,Adenomas, Monomorphic,Adenomas, Papillary,Adenomas, Trabecular,Basal Cell Adenoma,Basal Cell Adenomas,Follicular Adenoma,Follicular Adenomas,Microcystic Adenoma,Microcystic Adenomas,Monomorphic Adenoma,Monomorphic Adenomas,Papillary Adenoma,Papillary Adenomas,Trabecular Adenoma,Trabecular Adenomas
D000306 Adrenal Cortex Neoplasms Tumors or cancers of the ADRENAL CORTEX. Adrenocortical Cancer,Cancer of Adrenal Cortex,Adrenal Cortex Cancer,Cancer of the Adrenal Cortex,Neoplasms, Adrenal Cortex,Adrenal Cortex Cancers,Adrenal Cortex Neoplasm,Adrenocortical Cancers,Cancer, Adrenal Cortex,Cancer, Adrenocortical,Cancers, Adrenal Cortex,Cancers, Adrenocortical,Neoplasm, Adrenal Cortex
D000311 Adrenal Glands A pair of glands located at the cranial pole of each of the two KIDNEYS. Each adrenal gland is composed of two distinct endocrine tissues with separate embryonic origins, the ADRENAL CORTEX producing STEROIDS and the ADRENAL MEDULLA producing NEUROTRANSMITTERS. Adrenal Gland,Gland, Adrenal,Glands, Adrenal
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly

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