Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism
Abstract Possible ectopic parathyroid hormone (PTH) production in adipose tissues surrounding hyperplastic parathyroid glands was examined in patients with secondary hyperparathyroidism (SHPT). In vitro culture of adipose tissues from 31 patients excised during parathyroidectomy showed PTH secretion...
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doaj-0b286d0d26094816af21af801472a8e22021-02-23T09:31:54ZengNature Publishing GroupScientific Reports2045-23222020-02-011011810.1038/s41598-020-60045-yParathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidismTakatoshi Kakuta0Kaichiro Sawada1Genta Kanai2Ryoko Tatsumi3Takayo Miyakogawa4Mari Ishida5Raima Nakazawa6Masafumi Fukagawa7Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji HospitalDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of MedicineDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of MedicineDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji HospitalDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji HospitalDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji HospitalDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji HospitalDivision of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of MedicineAbstract Possible ectopic parathyroid hormone (PTH) production in adipose tissues surrounding hyperplastic parathyroid glands was examined in patients with secondary hyperparathyroidism (SHPT). In vitro culture of adipose tissues from 31 patients excised during parathyroidectomy showed PTH secretion in 23 (74.2%) patients. In vitro PTH secretion was detected in adipose tissues adhered to the parathyroid glands from 22 (71.0%) patients, in not-adhered adipose from 11 (35.5%) and in the thymus from four (28.6%) patients. Immunohistochemistry revealed colonies of PTH- and GCM2-positive cells intricately intertwined with adipocytes in excised adipose tissues prior to culture. When pieces of parathyroid parenchyma from SHPT patients were transplanted into the thyroid of immunodeficient nude rats with induced SHPT, the transplants secreted human PTH for one to three-and-half months after transplantation and expressed adipocyte markers, PPARγ2 and perilipin A, that the transplants did not express prior to transplantation. These findings indicate the importance of thoroughly removing adipose tissues surrounding the parathyroid glands when performing parathyroidectomy. We speculate that these ectopic PTH-producing cells are parathyroid parenchymal cells pushed out from the glands along with adipocyte progenitors during nodular growth of hyperplastic parenchymal cells and that these cells proliferate in SHPT, forming colonies PTH-producing cells intricately intertwined with adipocytes.https://doi.org/10.1038/s41598-020-60045-y |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Takatoshi Kakuta Kaichiro Sawada Genta Kanai Ryoko Tatsumi Takayo Miyakogawa Mari Ishida Raima Nakazawa Masafumi Fukagawa |
spellingShingle |
Takatoshi Kakuta Kaichiro Sawada Genta Kanai Ryoko Tatsumi Takayo Miyakogawa Mari Ishida Raima Nakazawa Masafumi Fukagawa Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism Scientific Reports |
author_facet |
Takatoshi Kakuta Kaichiro Sawada Genta Kanai Ryoko Tatsumi Takayo Miyakogawa Mari Ishida Raima Nakazawa Masafumi Fukagawa |
author_sort |
Takatoshi Kakuta |
title |
Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism |
title_short |
Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism |
title_full |
Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism |
title_fullStr |
Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism |
title_full_unstemmed |
Parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism |
title_sort |
parathyroid hormone-producing cells exist in adipose tissues surrounding the parathyroid glands in hemodialysis patients with secondary hyperparathyroidism |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2020-02-01 |
description |
Abstract Possible ectopic parathyroid hormone (PTH) production in adipose tissues surrounding hyperplastic parathyroid glands was examined in patients with secondary hyperparathyroidism (SHPT). In vitro culture of adipose tissues from 31 patients excised during parathyroidectomy showed PTH secretion in 23 (74.2%) patients. In vitro PTH secretion was detected in adipose tissues adhered to the parathyroid glands from 22 (71.0%) patients, in not-adhered adipose from 11 (35.5%) and in the thymus from four (28.6%) patients. Immunohistochemistry revealed colonies of PTH- and GCM2-positive cells intricately intertwined with adipocytes in excised adipose tissues prior to culture. When pieces of parathyroid parenchyma from SHPT patients were transplanted into the thyroid of immunodeficient nude rats with induced SHPT, the transplants secreted human PTH for one to three-and-half months after transplantation and expressed adipocyte markers, PPARγ2 and perilipin A, that the transplants did not express prior to transplantation. These findings indicate the importance of thoroughly removing adipose tissues surrounding the parathyroid glands when performing parathyroidectomy. We speculate that these ectopic PTH-producing cells are parathyroid parenchymal cells pushed out from the glands along with adipocyte progenitors during nodular growth of hyperplastic parenchymal cells and that these cells proliferate in SHPT, forming colonies PTH-producing cells intricately intertwined with adipocytes. |
url |
https://doi.org/10.1038/s41598-020-60045-y |
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