Article
Veterinary Sciences
Dennis E. Jewell, Kiran S. Panickar
Summary: The optimum concentration of vitamin D for dogs is still debated, but a minimum concentration of 100 ng/mL (250 nM) of circulating vitamin D has been suggested for optimal health. The relationship between dietary intake of vitamin D-3 and circulating 25(OH) D in adult dogs has not been well studied. The safe upper limit of vitamin D in dog foods for adult maintenance is 3,200 IU/kg on a dry matter basis, but this guideline was not based on studies of adult maintenance requirements. Understanding the relationship between dietary vitamin D and circulating vitamin D is important for promoting health in dogs.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Nutrition & Dietetics
Ola Hysaj, Patricia Marques-Gallego, Aline Richard, Magdeldin Elgizouli, Alexandra Nieters, Katharina C. Quack Lotscher, Sabine Rohrmann
Summary: This study assessed parathyroid hormone concentrations in pregnant women during early and late pregnancy, finding an inverse correlation between serum 25(OH)D and PTH levels. Statistically significant determinants of PTH concentrations included 25(OH)D levels, season, parity, and partner's education in early pregnancy, while late pregnancy was affected by 25(OH)D levels and country of origin. These factors seem to primarily impact PTH through 25(OH)D, but may also have other mechanisms of influence.
Article
Medical Laboratory Technology
Ann Vissing Landgrebe, Morten Asp Vonsild Lund, Ulrik Lausten-Thomsen, Christine Frithioff-Bojsoe, Cilius Esmann Fonvig, Johanne Lind Plesner, Louise Aas Holm, Thomas Jespersen, Torben Hansen, Jens Christian Holm
Summary: Concentrations of PTH, vitamin D, calcium, and phosphate in children and adolescents vary with age, sex, and season, which should be taken into consideration when screening for and treating imbalances in bone metabolism.
CLINICA CHIMICA ACTA
(2021)
Article
Endocrinology & Metabolism
Maria Phylactou, Alexander N. Comninos, Ahmed Salih, Marina Labib, Pei Chia Eng, Sophie A. Clarke, Pope Moore, Tricia Tan, Jaimini Cegla, Waljit S. Dhillo, Ali Abbara
Summary: Background: TCa is commonly adjusted for albumin using established formulae to estimate Ca2+. This study derived a novel formula and compared its performance to existing formulae in predicting Ca2+. Conclusion: The newly derived formula showed improved prediction of Ca2+ compared to established formulae, indicating the need for further studies to optimize TCa adjustment.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Article
Engineering, Multidisciplinary
Yi Wang, Zhuowen Hao, Yufeng Zhang, Yingkun Hu, Tianhong Chen, Feifei Yan, Minhao Wu, Chong Zhang, Renxin Chen, Beihai Li, Xinxin Wu, Hanke Li, Qixin Zheng, Xiaodong Guo, Guohui Liu, Zhenwei Zou, Jingfeng Li, Lin Cai
Summary: Bone regeneration requires the interaction of multiple factors, including osteogenesis, osteolysis, angiogenesis, and an appropriate immune microenvironment. Recombinant human parathyroid hormone (PTH1-34) has been proven effective for clinical treatment of osteoporosis. However, its use in local bone repair is limited due to net bone resorption. This study proposes a strategy using multifunctional calcium phosphate (CaP) ceramics to modulate the effects of M1 macrophages and promote bone regeneration. The functionalization of the CaP ceramic scaffold with parathyroid hormone related peptide-1 (PTHrP-1) improves the osteogenic microenvironment, retains osteogenic and angiogenic properties, and achieves slow release of PTHrP-1. The results show that PTHrP-1-TBC is more suitable for bone regeneration than the unmodified peptide or the TBC scaffold alone.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Endocrinology & Metabolism
Audrey Bobillier, Philippe Wagner, Danielle E. Whittier, Rene Ecochard, Steven K. Boyd, Roland Chapurlat, Pawel Szulc
Summary: The study found that poor vitamin D status and high parathyroid hormone levels are associated with the deterioration of bone microarchitecture and reduced bone strength in older men.
JOURNAL OF BONE AND MINERAL RESEARCH
(2022)
Article
Endocrinology & Metabolism
Hope A. Weiler, Wen Hsuan Fu, Maryam Razaghi, Nathalie Gharibeh, Catherine A. Vanstone
Summary: This study found an association between vitamin D deficiency and elevated parathyroid hormone levels in newborn infants. The global consensus recommendation on vitamin D deficiency (<25 nmol/L) aligns better with the threshold at which parathyroid hormone is elevated compared to the definition set by the National Academy of Medicine (<30 nmol/L).
Article
Endocrinology & Metabolism
David Gillis, Ari Hefter, Shalom Edri, David Strich
Summary: The aim of this study was to determine the optimal pediatric levels of 25-hydroxy-vitamin D (25OHD) for bone health. The study analyzed a large dataset of 49,935 25OHD tests from children sampled between 2009 and 2019. Significant correlations were found between 25OHD levels and parathyroid hormone (PTH) and calcium, indicating that increasing 25OHD levels up to at least 100 nmol/l can improve bone mineralization.
HORMONE AND METABOLIC RESEARCH
(2023)
Article
Endocrinology & Metabolism
Hirotaka Komaba, Junhui Zhao, Angelo Karaboyas, Suguru Yamamoto, Indranil Dasgupta, Mohamed Hassan, Li Zuo, Anders Christensson, Christian Combe, Bruce M. Robinson, Masafumi Fukagawa
Summary: This study analyzed the association between the prescription of active vitamin D and fracture incidence in hemodialysis patients. The results suggested that active vitamin D does not have a PTH-independent benefit in fracture prevention, supporting the current guideline of using active vitamin D only in patients with elevated or rising PTH.
JOURNAL OF BONE AND MINERAL RESEARCH
(2023)
Article
Nutrition & Dietetics
Ning Xie, Jiale Xie, Ziwei Wang, Qiuai Shu, Haitao Shi, Jinhai Wang, Na Liu, Feng Xu, Jian Wu
Summary: This study utilized a two-sample Mendelian randomization (MR) analysis to explore the causal effects among calcium, vitamin D (Vit-D), parathyroid hormone (PTH), and irritable bowel syndrome (IBS). The results did not find any causal relationship between serum calcium, Vit-D levels, and the risk of IBS. However, there was an association between genetic predisposition to IBS and decreased levels of PTH.
Review
Endocrinology & Metabolism
Ignacio Portales-Castillo, Petra Simic
Summary: Bone-mineral ion regulators, such as PTH, FGF23, Klotho, and 1,25(OH)2 vitamin D, play important roles in calcium and phosphate metabolism and cell signaling. These factors are tightly regulated through genetic, epigenetic, and post-translational mechanisms. Epigenetic mechanisms, including DNA methylation and histone modification, have been found to affect the function of these regulators.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Fulvia Zappulo, Maria Cappuccilli, Alessandra Cingolani, Anna Scrivo, Anna Laura Croci Chiocchini, Miriam Di Nunzio, Chiara Donadei, Marianna Napoli, Francesco Tondolo, Giuseppe Cianciolo, Gaetano La Manna
Summary: Vitamin D plays a crucial role in bone metabolism, as well as having important extra-bone effects such as glucose homeostasis and cardiovascular protection. This narrative review provides an overview of the role of vitamin D in different settings, with a special focus on chronic kidney disease and kidney transplant.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Transplantation
Nahid Tabibzadeh, Angelo Karaboyas, Bruce M. Robinson, Philipp A. Csomor, David M. Spiegel, Pieter Evenepoel, Stefan H. Jacobson, Pablo-Antonio Urena-Torres, Masafumi Fukagawa, Issa Al Salmi, Xinling Liang, Ronald L. Pisoni, Eric W. Young
Summary: The study found that patients with higher PTH levels before starting hemodialysis were more likely to be prescribed active vitamin D and calcimimetics during the first year of hemodialysis. Additionally, these patients had a higher risk of having PTH levels greater than 600pg/mL 9-12 months after starting hemodialysis.
NEPHROLOGY DIALYSIS TRANSPLANTATION
(2021)
Article
Surgery
Reshi Suthakaran, Imeshi Indigahawela, Krinal Mori, Kiat Lim, Ahmad Aly
Summary: This study investigated the variations in serum calcium, vitamin D, and parathyroid hormone levels following Roux-en-Y Gastric bypass (RYBP) and Sleeve Gastrectomy (SG), finding significant improvements in calcium and vitamin D levels postoperatively for both procedures. However, higher parathyroid hormone (PTH) levels were observed following RYBP compared to SG, indicating the need for tailored supplementation protocols for patients with high preoperative PTH levels undergoing RYBP to prevent deficiencies.
Article
Endocrinology & Metabolism
John P. Bilezikian, Anna Maria Formenti, Robert A. Adler, Neil Binkley, Roger Bouillon, Marise Lazaretti-Castro, Claudio Marcocci, Nicola Napoli, Rene Rizzoli, Andrea Giustina
Summary: The conference discussed the important role of vitamin D in skeletal and extra-skeletal systems, recommending personalized management based on the specific mechanisms underlying vitamin D deficiency in different diseases. Furthermore, the supplementation of vitamin D in COVID-19 and the optimal route of administration for vitamin D in different clinical conditions were also discussed.
REVIEWS IN ENDOCRINE & METABOLIC DISORDERS
(2021)
Article
Cell Biology
Renlei Yang, Jie Chen, Jiao Zhang, Ran Qin, Rong Wang, Yue Qiu, Zhiyuan Mao, David Goltzman, Dengshun Miao
Article
Cardiac & Cardiovascular Systems
Yi Yan, Chengyu Xiang, Zhijian Yang, Dengshun Miao, Dingguo Zhang
CARDIOVASCULAR TOXICOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Haiyun Chen, Hongjie Chen, Jialong Liang, Xin Gu, Jiawen Zhou, Chunfeng Xie, Xianhui Lv, Rong Wang, Qing Li, Zhiyuan Mao, Haijian Sun, Guoping Zuo, Dengshun Miao, Jianliang Jin
EXPERIMENTAL AND MOLECULAR MEDICINE
(2020)
Article
Biochemistry & Molecular Biology
Shuxiang Yu, Ping Li, Baojie Li, Dengshun Miao, Qi Deng
Article
Endocrinology & Metabolism
Haijian Sun, Wanxin Qiao, Min Cui, Cuicui Yang, Rong Wang, David Goltzman, Jianliang Jin, Dengshun Miao
JOURNAL OF BONE AND MINERAL RESEARCH
(2020)
Article
Cell Biology
Xiaohan Yang, Zhixuan Zhou, Zhiyuan Mao, Ming Shen, Ning Chen, Dengshun Miao
JOURNAL OF MOLECULAR HISTOLOGY
(2020)
Article
Biology
Hui Che, Jie Li, You Li, Cheng Ma, Huan Liu, Jingyi Qin, Jianghui Dong, Zhen Zhang, Cory J. Xian, Dengshun Miao, Liping Wang, Yongxin Ren
Article
Biochemistry & Molecular Biology
Renlei Yang, Jiao Zhang, Jie Li, Ran Qin, Jie Chen, Rong Wang, David Goltzman, Dengshun Miao
Summary: The study demonstrates that 1,25(OH)(2)D may delay age-related osteoporosis by regulating Nrf2-antioxidant signaling pathway, and oltipraz shows potential as a reagent for clinical prevention and treatment of age-related osteoporosis.
FREE RADICAL BIOLOGY AND MEDICINE
(2022)
Article
Cell Biology
You Li, Yifan Wei, He Li, Hui Che, Dengshun Miao, Cheng Ma, Yongxin Ren
Summary: Parathyroid hormone can alleviate intervertebral disc degeneration by inhibiting inflammation, oxidative stress, and apoptosis, and improving the activity of nucleus pulposus cells via activating the Sonic hedgehog signaling pathway.
OXIDATIVE MEDICINE AND CELLULAR LONGEVITY
(2022)
Article
Biochemistry & Molecular Biology
Chunfeng Xie, Chunhua Liang, Rong Wang, Kefan Yi, Xu Zhou, Xiaoting Li, Yue Chen, Dengshun Miao, Caiyun Zhong, Jianyun Zhu
Summary: Increasing evidence suggests that cancer stem cells (CSCs) play a crucial role in tumor initiation and recurrence. Targeting CSCs and the tumor microenvironment (TME) is a novel anti-cancer approach. Resveratrol (RES) inhibits lung cancer by targeting lung cancer stem-like cells (LCSCs) and IL-6 in the TME.
JOURNAL OF NUTRITIONAL BIOCHEMISTRY
(2023)
Article
Cell Biology
Jie Li, Jing Zhang, Qi Xue, Boyang Liu, Ran Qin, Yiping Li, Yue Qiu, Rong Wang, David Goltzman, Dengshun Miao, Renlei Yang
Summary: Age-related osteoporosis is associated with increased oxidative stress and cellular senescence. Pyrroloquinoline quinone (PQQ) is a water-soluble vitamin-like compound that has strong antioxidant capacity. This study found that dietary PQQ supplementation can prevent age-related osteoporosis in mice by inhibiting osteoclastic bone resorption and stimulating osteoblastic bone formation. PQQ appears to bind to MCM3 and reduces its ubiquitination-mediated degradation, thereby activating Nrf2-antioxidant response element signaling and inhibiting bone resorption. The study reveals the underlying mechanism of PQQ's strong antioxidant capacity and presents PQQ as a potential agent for clinical prevention and treatment of natural aging-induced osteoporosis.
Article
Endocrinology & Metabolism
Dengshun Miao, David Goltzman
Summary: Genetically modified mice have provided novel insights into the mechanisms of activation and inactivation of vitamin D, revealing the primary role of calcitriol and VDR in bone, cartilage, tooth development, and mineral metabolism regulation.
Article
Oncology
Wanxin Qiao, Shuxiang Yu, Haijian Sun, Lulu Chen, Rong Wang, Xuan Wu, David Goltzman, Dengshun Miao
AMERICAN JOURNAL OF TRANSLATIONAL RESEARCH
(2020)
Article
Oncology
Jie Li, Muhammad Amin Karim, Hui Che, Qinghe Geng, Dengshun Miao
AMERICAN JOURNAL OF TRANSLATIONAL RESEARCH
(2020)
Article
Biochemistry & Molecular Biology
Rong Wang, Xian Xue, Yang Wang, Haiyang Zhao, Yuling Zhang, Hui Wang, Dengshun Miao
INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES
(2019)