33 citations
,
May 2006 in “Journal of Investigative Dermatology” This study found that high levels of parathyroid hormone-related protein expression can result in the production of shorter hair shafts, likely through effects on angiogenesis.
24 citations
,
March 2016 in “Journal of Investigative Dermatology” This study suggests that TIP39 and its receptor PTH2R, identified in human epidermis, may play a role in keratinocyte function and influence skin differentiation.
23 citations
,
July 2012 in “Calcified Tissue International” In this study, a single dose of PTH–CBD produced a sustained increase in bone mineral density for up to a year in mice, indicating its potential as an osteoporosis treatment.
20 citations
,
September 2013 in “Anti-Cancer Drugs” In this study, PTH-CBD effectively prevented and partially reversed chemotherapy-induced alopecia in mice, with pretreatment offering a better cosmetic outcome compared to therapeutic administration after hair loss onset.
PTHrP is important for bone formation and may be targeted for osteoporosis treatment and longevity therapies.
In this study using C3H/HeJ mice, a single subcutaneous injection of the fusion protein PTH-CBD increased anagen hair follicle counts and promoted hair regrowth comparably to daily oral ruxolitinib, potentially by enhancing beta-catenin production and stimulating anagen transition.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, a single subcutaneous dose of PTH-CBD showed similar hair regrowth to daily oral ruxolitinib in mice with alopecia, possibly through increased beta-catenin and anagen transition stimulation.
211 citations
,
February 1994 in “Proceedings of the National Academy of Sciences” This study found that overexpression of parathyroid hormone-related peptide in transgenic mice skin disrupted normal hair follicle development, suggesting a role for the peptide in the early stages of follicle formation.
170 citations
,
May 1979 in “The journal of pediatrics/The Journal of pediatrics” This report describes two sisters with rickets and alopecia unresponsive to high doses of vitamin D2, where oral phosphorus supplements led to significant clinical improvement.
146 citations
,
January 2004 in “Hormones” This review explores the complex endocrine functions of human skin and its role as a peripheral endocrine organ, but reports no new clinical results.
137 citations
,
December 2007 in “Journal of bone and mineral research” This study suggests that 1,25-dihydroxyvitamin D(3) and fibroblast growth factor 23 form a crucial axis in regulating phosphate balance, akin to its role in calcium regulation, and explores novel VDR interactions including with curcumin.
54 citations
,
May 1994 in “Veterinary Pathology” This study found widespread localization of parathyroid hormone-related protein in normal and cancerous canine tissues, suggesting a potential physiological role as a paracrine or autocrine factor.
52 citations
,
May 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that overexpression of parathyroid hormone-related protein in mice resulted in 30–40% shorter hair due to premature transition into the catagen phase of the hair cycle.
40 citations
,
April 2013 in “Dermato-endocrinology” In this study, researchers observed vitamin D insufficiency in many patients with Alopecia Areata, suggesting its potential role in managing this autoimmune condition.
37 citations
,
August 2015 in “The Journal of Steroid Biochemistry and Molecular Biology” This study found that in a mouse model with hereditary 1,25-dihydroxyvitamin D resistant rickets, a mutant vitamin D receptor lacking hormone-binding ability could restore normal hair cycling and affect parathyroid hormone regulation.
26 citations
,
December 2006 in “Endocrinology” This study found that a topical cream containing PTH (7–34) significantly stimulated hair growth in hairless mice.
24 citations
,
December 2011 in “International Journal of Cancer” This study found that the collagen-binding fusion protein PTH-CBD significantly improved hair regrowth and follicle health in mice after chemotherapy, suggesting potential as a therapy for chemotherapy-induced alopecia.
23 citations
,
April 1996 in “PubMed” This article reviews the role and clinical applications of 1,25-dihydroxyvitamin D3 and parathyroid hormone-related peptide in dermatology, with a focus on psoriasis treatment, and reports no new experimental findings.
15 citations
,
January 2015 in “Skin Pharmacology and Physiology” This study indicates that targeting the PTH/PTHrP receptor may potentially stimulate hair growth, particularly for chemotherapy-induced alopecia, as observed in hairless and cyclophosphamide-treated mice.
12 citations
,
November 2015 in “Journal of Investigative Dermatology Symposium Proceedings” PTH-CBD helps reduce hair loss in mice by stimulating hair growth directly.
9 citations
,
July 2014 in “Experimental Dermatology” This study suggests that while PTH rP initially seemed to shorten the hair cycle by transitioning hair follicles from anagen to catagen, more relevant models indicate it ultimately accelerates and stimulates hair growth.
8 citations
,
September 2014 in “Journal of X-Ray Science and Technology” This study found that hair analysis may be useful in early breast cancer detection by identifying distinct calcium and strontium concentration patterns before and during cancer development.
8 citations
,
April 2014 in “Anti-Cancer Drugs” In this study, PTH–CBD displayed dose-dependent effects in reducing hair loss and enhancing hair regrowth in a mouse model of chemotherapy-induced alopecia.
8 citations
,
December 1981 in “Journal of The American Academy of Dermatology” This review addresses clinical findings in parathyroid disease and discusses the metabolism of calcium, phosphorus, vitamin D, and parathyroid hormone, reporting no new results.
4 citations
,
January 1994 in “Current Opinion in Endocrinology & Diabetes” This review discusses multiple physiological roles of parathyroid hormone-related protein, such as cartilage mineralization and hair follicle regulation, and reports no new experimental results.
1 citations
,
May 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” This paper reviews several dermatological studies, including findings on hair growth, skin damage, bullous pemphigoid, and psoriasis treatments, and reports no new clinical results.
April 2024 in “Research Square (Research Square)” This case report describes a 27-year-old male with autoimmune polyglandular syndrome type 1, characterized by symptoms including fever, dysarthria, dysphagia, oral candidiasis, nail dystrophy, alopecia, hypoparathyroidism, and dilated cardiomyopathy. The study highlights unique bilateral symmetrical brain calcifications and underscores the syndrome’s diverse manifestations.
November 2023 in “Biomolecules” In this study involving genetically modified rats, researchers observed that specific mutations in the vitamin D receptor affect calcium levels and bone formation, emphasizing the receptor's role in maintaining healthy bone density and its importance in regulating hair cycle and skin health.
November 2022 in “Journal of the Endocrine Society” In this case study, a woman with high 25(OH)D levels and persistent symptoms showed decreased parathormone after transdermal estrogen therapy, highlighting the importance of assessing both parathormone and estrogen levels in similar patients.
Hair can show daily calcium changes, linked to body calcium levels and influenced by hormones, and can help assess calcium metabolism issues.