1
|
Effects of Proton Pump Inhibitor Administration and Intake of a Combination of Yogurt and Galactooligosaccharides on Bone and Mineral Metabolism in Rats. Nutrients 2016; 8:nu8100653. [PMID: 27775655 PMCID: PMC5084039 DOI: 10.3390/nu8100653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 09/27/2016] [Accepted: 10/17/2016] [Indexed: 01/26/2023] Open
Abstract
The aim of this study was to investigate the effects of proton pump inhibitor (PPI), the most potent acid-suppressing drug, administration and intake of a combination of yogurt and galactooligosaccharides (YG) on bone and mineral metabolism in adult rats. Twelve-week-old male Wistar rats were divided into three groups: a control group fed the control diet with vehicle administration, a PPI group fed the control diet with PPI administration and a YG + PPI group fed the YG diet with PPI administration. All of the groups received their respective experimental diets and daily subcutaneous injection of the vehicle or PPI for 12 weeks. The PPI group showed significantly lower bone mineral density (BMD) of the femur and the lumbar vertebrae and serum fibroblast growth factor 23 (FGF23) and significantly higher phosphorus absorption and serum 1,25-dihydroxyvitamin D (1,25(OH)2D) than the control group, although PPI did not affect calcium absorption. The PPI + YG group showed significantly higher BMD and serum FGF23 and significantly lower phosphorus absorption and serum 1,25(OH)2D than the PPI group. Furthermore, the PPI + YG group showed higher calcium absorption than the control group. These results suggest that although PPI administration did not affect calcium absorption, it adversely affected BMD and influenced phosphorus metabolism in adult rats. Furthermore, the YG diet beneficially affected BMD and attenuated the effects of PPI administration on phosphorus metabolism.
Collapse
|
2
|
Jung SY, Kim HY, Park HS, Yin XY, Chung SM, Kim HS. Standardization of A Physiologic Hypoparathyroidism Animal Model. PLoS One 2016; 11:e0163911. [PMID: 27695051 PMCID: PMC5047647 DOI: 10.1371/journal.pone.0163911] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 09/17/2016] [Indexed: 11/18/2022] Open
Abstract
Ideal hypoparathyroidism animal models are a prerequisite to developing new treatment modalities for this disorder. The purpose of this study was to evaluate the feasibility of a model whereby rats were parathyroidectomized (PTX) using a fluorescent-identification method and the ideal calcium content of the diet was determined. Thirty male rats were divided into surgical sham (SHAM, n = 5) and PTX plus 0, 0.5, and 2% calcium diet groups (PTX-FC (n = 5), PTX-NC (n = 10), and PTX-HC (n = 10), respectively). Serum parathyroid hormone levels decreased to non-detectable levels in all PTX groups. All animals in the PTX—FC group died within 4 days after the operation. All animals survived when supplied calcium in the diet. However, serum calcium levels were higher in the PTX-HC than the SHAM group. The PTX-NC group demonstrated the most representative modeling of primary hypothyroidism. Serum calcium levels decreased and phosphorus levels increased, and bone volume was increased. All animals survived without further treatment and did not show nephrotoxicity including calcium deposits. These findings demonstrate that PTX animal models produced by using the fluorescent-identification method, and fed a 0.5% calcium diet, are appropriate for hypoparathyroidism treatment studies.
Collapse
Affiliation(s)
- Soo Yeon Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Ha Yeong Kim
- Department of Molecular Medicine, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Hae Sang Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Chuncheon Sacred Heart Hospital, Hallym University, College of Medicine, Chuncheon, Korea
| | - Xiang Yun Yin
- Department Orthopaedic Surgery, School of Medicine, Ajou University, Suwon, Korea
| | - Sung Min Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Han Su Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Ewha Womans University, Seoul, Korea
- * E-mail:
| |
Collapse
|
3
|
Lütfioğlu M, Sakallioğlu U, Sakallioğlu EE, Bariş S, Gürgör P. The impact of dietary induced hyperparathyroidism on healthy and diseased periodontia: an experimental study in rats. J Clin Periodontol 2011; 39:264-71. [DOI: 10.1111/j.1600-051x.2011.01814.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2011] [Indexed: 11/28/2022]
Affiliation(s)
- Müge Lütfioğlu
- Department of Periodontology; Ondokuz Mayıs University Faculty of Dentistry
| | - Umur Sakallioğlu
- Department of Periodontology; Ondokuz Mayıs University Faculty of Dentistry
| | | | - Sancar Bariş
- Department of Pathology; Ondokuz Mayıs University Faculty of Medicine; Samsun; Turkey
| | - Pınar Gürgör
- High School of Health; Hitit University; Çorum; Turkey
| |
Collapse
|
4
|
Camalier CE, Young MR, Bobe G, Perella CM, Colburn NH, Beck GR. Elevated phosphate activates N-ras and promotes cell transformation and skin tumorigenesis. Cancer Prev Res (Phila) 2010; 3:359-70. [PMID: 20145188 DOI: 10.1158/1940-6207.capr-09-0068] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent results suggest a paradigm shift from viewing inorganic phosphate as a passive requirement for basic cell functions to an active regulator of cell behavior. We have previously shown that elevated concentrations of phosphate increased cell proliferation and expression of protumorigenic genes such as Fra-1 and osteopontin in a preosteoblast cell line. Therefore, we hypothesized that elevated phosphate concentrations would promote cell transformation in vitro and tumorigenesis in vivo. Supplementation of medium with phosphate increased anchorage-independent transformation and proliferation of BALB/c mouse JB6 epidermal cells, activation of N-ras, ERK1/2, and activator protein-1, and increased gene expression of Fra-1, COX-2, and osteopontin in a dose-dependent manner. These in vitro results led to the hypothesis that varying the levels of dietary inorganic phosphate would alter tumorigenesis in the mouse model of skin carcinogenesis. Female FVB/N mice were treated with 7,12-dimethylbenz(a)anthracene/12-O-tetradecanoylphorbol-13-acetate and fed high- or low-phosphate diets (1.2% versus 0.2% of the diet) for 19 weeks. The high-phosphate diet increased skin papilloma number by approximately 50% without changing feed intake and body weights. High dietary phosphate increased serum concentrations of phosphate, parathyroid hormone, and osteopontin and decreased serum concentrations of calcium. Thus, we conclude that elevated phosphate promotes cell transformation and skin tumorigenesis partly by increasing the availability of phosphate for activation of N-ras and its downstream targets, which defines reducing dietary phosphate as a novel target for chemoprevention.
Collapse
Affiliation(s)
- Corinne E Camalier
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipids, Emory University School of Medicine, 101 Woodruff Circle, Atlanta, GA 30322, USA
| | | | | | | | | | | |
Collapse
|
5
|
Mattar LE, Mattar MA, Batal M, Mouneimne Y, Obeid OA. Stimulation of postprandial in vivo glycogenesis and lipogenesis of rats fed high fructose diet with varied phosphate content. Nutr Res 2010; 30:151-5. [DOI: 10.1016/j.nutres.2009.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 12/03/2009] [Accepted: 12/17/2009] [Indexed: 10/19/2022]
|
6
|
Petrovich YA, Volozhin AI, Kichenko SM, Subramanian S. Effect of parathyroidectomy on fluctuations in calcium transport between the blood and mineralized tissues of rats. Bull Exp Biol Med 2007; 142:295-8. [PMID: 17426833 DOI: 10.1007/s10517-006-0350-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Parathyroidectomy increases the degree of(45)Ca fluctuations between the blood and mineralized tissues (bones and teeth) in rats, which is associated with a decrease in 14C-glycine incorporation into bone proteins. Disturbances in Ca(2+)metabolism and transport during hyperparathyroidism are partly prevented by parathyroidectomy. It is mainly related to variations in the interaction of parathyroid hormone, calcitonin, 1.25(OH)2D3, and other bioactive substances, but not to initiation of mineralization with protein matrixes.
Collapse
Affiliation(s)
- Yu A Petrovich
- Moscow State Medical and Stomatological University, Department for Tumors of the Head and Neck, Institute of Clinical Oncology, N. N. Blokhin Russian Cancer Research Center, Russian Academy of Medical Sciences
| | | | | | | |
Collapse
|
7
|
Koshihara M, Masuyama R, Uehara M, Suzuki K. Reduction in dietary calcium/phosphorus ratio reduces bone mass and strength in ovariectomized rats enhancing bone turnover. Biosci Biotechnol Biochem 2006; 69:1970-3. [PMID: 16244450 DOI: 10.1271/bbb.69.1970] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
To clarify the effects of the dietary calcium (Ca)/phosphorus (P) ratio on bone mineralization under the condition of estrogen deficiency, Wistar strain female rats were ovariectomized (OVX) at 12 weeks old. At 16 weeks old, the rats were divided into three dietary groups fed varying levels of P containing 0.5% Ca: 0.25% P, Ca/P = 2; 0.5% P, Ca/P = 1; and 1.0% P, Ca/P = 0.5 respectively. This study indicates that the reduction of the dietary Ca/P ratio impairs trabecular bone turnover accompanying the acceleration of bone formation in OVX rats.
Collapse
Affiliation(s)
- Moyuru Koshihara
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, Sakuragaoka, Japan
| | | | | | | |
Collapse
|
8
|
Katsumata SI, Masuyama R, Uehara M, Suzuki K. High-phosphorus diet stimulates receptor activator of nuclear factor-kappaB ligand mRNA expression by increasing parathyroid hormone secretion in rats. Br J Nutr 2005; 94:666-74. [PMID: 16277767 DOI: 10.1079/bjn20051552] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The purpose of the present study was to clarify the manner by which the supplementation of high-P diet induces bone loss. Eighteen 4-week-old male Wistar-strain rats were assigned randomly to three groups and fed diets containing three P levels (0.3, 0.9, and 1.5 %) for 21 d. A lower serum Ca concentration was observed in the rats fed on the 1.5 % P diet than in the other two groups. Serum P and parathyroid hormone concentrations and urinary excretion of C-terminal telopeptide of type I collagen were elevated with increasing dietary P levels. Serum osteocalcin concentration was increased in the rats fed on the 1.5 % P diet than in the other two groups. Bone formation rate of the lumbar vertebra was significantly increased in the two high-P groups than in the 0.3 % P group. Osteoclast number was significantly increased with increasing dietary P levels. Bone mineral content and bone mineral density of the femur and lumbar vertebra and ultimate compression load of the lumbar vertebra were decreased with increasing dietary P levels. Additionally, ultimate bending load of the femur was decreased in the rats fed on the 1.5 % P diet than in the other two groups. Receptor activator of NF-kappaB ligand (RANKL) mRNA expression in the femur was significantly higher with increasing dietary P levels. These results suggest that secondary hyperparathyroidism due to a high-P diet leads to bone loss via an increase in bone turnover. Furthermore, an increase in osteoclast number was caused by increased RANKL mRNA expression.
Collapse
Affiliation(s)
- Shin-Ichi Katsumata
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan.
| | | | | | | |
Collapse
|
9
|
Katsumata SI, Masuyama R, Uehara M, Suzuki K. Decreased mRNA expression of the PTH/PTHrP receptor and type II sodium-dependent phosphate transporter in the kidney of rats fed a high phosphorus diet accompanied with a decrease in serum calcium concentration. Biosci Biotechnol Biochem 2005; 68:2484-9. [PMID: 15618618 DOI: 10.1271/bbb.68.2484] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study investigates the phosphorus (P) homeostasis in the process of an altered parathyroid hormone (PTH) action in the kidney of rats fed a high P diet. Four-week-old male Wistar strain rats were fed diets containing five different P levels (0.3, 0.6, 0.9, 1.2 and 1.5%) for 21 days. The serum PTH concentration and urinary excretion of P were elevated with increasing dietary P level. Compared to rats fed the 0.3% P diet, the serum calcium (Ca) concentration remained unchanged, while the serum 1,25(OH)(2)D(3) concentration and urinary excretion of cAMP were elevated with increasing dietary P level in rats fed the high P diets containing 0.6-0.9% P. On the other hand, a lower serum Ca concentration was observed in rats fed the high P diets containing 1.2% or greater P. The serum 1,25(OH)(2)D(3) concentration remained unchanged in rats fed the high P diets containing 1.2% or greater P, comparison with rats fed the 0.3% P diet. The urinary excretion of cAMP and PTH/PTH-related peptide (PTHrP) receptor and type II sodium-dependent phosphate transporter (NaPi-2) mRNA in the kidney were both decreased in rats fed the high P diets containing 1.2% or greater P. In conclusion, a high P diet with subsequent decrease in serum Ca concentration suppressed the PTH action in the kidney due to PTH/PTHrP receptor mRNA down-regulation. Furthermore, an increase in the urinary excretion of P might have been caused by decreased NaPi-2 mRNA expression without the effects of PTH and 1,25(OH)(2)D(3).
Collapse
Affiliation(s)
- Shin-ichi Katsumata
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | | | | | | |
Collapse
|
10
|
Katsumata SI, Masuyama R, Koshihara M, Matsuzaki H, Uehara M, Suzuki K. Effect of high phosphorus diet on phosphorus metabolism in parathyroidectomized rats. Biofactors 2004; 22:33-7. [PMID: 15630249 DOI: 10.1002/biof.5520220106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
To determine the parathyroid hormone (PTH) action on kidney and bone by high phosphorus (P) diet, this study investigated PTH/PTH-related peptide (PTHrP) receptor mRNA expression in 6-week-old parathyroidectomized (PTX) rats received constant amount of PTH. To maintain serum PTH levels equally to sham operated rats, PTX rats were constantly exposed to rPTH (1-34) and fed a control diet (0.3% P) and a high P diet (1.2% P) for 7 days, respectively. There were no significant differences in serum PTH (1-34) concentration in rats fed the control diet. In sham groups, serum PTH concentrations, both (1-84) and (1-34) fragments, were increased in rats fed the high P diet than in rats fed the control diet. Urinary excretions of P and C-terminal telopeptides of type I collagen were significantly increased in both PTX and sham rats by the high P diet. PTH/PTHrP receptor mRNA expression in kidney and femur was not changed in both PTX and sham rats by the high P diet. In conclusion, high P diet did not change PTH action in PTX rats and increased urinary excretion of P and bone resorption regardless of PTH action.
Collapse
Affiliation(s)
- Shin-ichi Katsumata
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | | | | | | | | | | |
Collapse
|