Effect of silicon supplementation on bone and mineral (calcium, magnesium, and silicon) status in ovariectomized rats fed with low- and high-calcium diet

2020 ◽  
Vol 37 (07) ◽  
pp. 129-138
Author(s):  
Mi-Kyeong Choi ◽  
Mi-Hyun Kim ◽  
Yun-Jung Bae
Keyword(s):  
Ovariectomized Rats ◽  
Calcium Diet ◽  
High Calcium ◽  
High Calcium Diet ◽  
Calcium Magnesium

High-calcium diet modulates effects of long-term prolactin exposure on the cortical bone calcium content in ovariectomized rats

2007 ◽  
Vol 292 (2) ◽  
pp. E443-E452 ◽  
Author(s):  
Narattaphol Charoenphandhu ◽  
Kukiat Tudpor ◽  
Kanogwun Thongchote ◽  
Wasana Saengamnart ◽  
Supaporn Puntheeranurak ◽  
...  
Keyword(s):  
Calcium Content ◽  
Ovariectomized Rats ◽  
Calcium Deposition ◽  
Total Calcium ◽  
Adult Rats ◽  
Calcium Diet ◽  
High Calcium ◽  
Bone Calcium ◽  
High Calcium Diet

High physiological prolactin induced positive calcium balance by stimulating intestinal calcium absorption, reducing renal calcium excretion, and increasing bone calcium deposition in female rats. Although prolactin-induced increase in trabecular bone calcium deposition was absent after ovariectomy, its effects on cortical bones were still controversial. The present investigation, therefore, aimed to study the effect of in vivo long-term high physiological prolactin induced by either anterior pituitary (AP) transplantation or 2.5 mg/kg prolactin injection on cortical bones in ovariectomized rats. Since the presence of prolactin receptors (PRLR) in different bones of normal adult rats has not been reported, we first determined mRNA expression of both short- and long-form PRLRs at the cortical sites (tibia and femur) and trabecular sites (calvaria and vertebrae) by using the RT-PCR. Our results showed the mRNA expression of both PRLR isoforms with predominant long form at all sites. However, high prolactin levels induced by AP transplantation in normal rats did not have any effect on the femoral bone mineral density or bone mineral content. By using 45Ca kinetic study, 2.5 mg/kg prolactin did not alter bone formation, bone resorption, calcium deposition, and total calcium content in tibia and femur of adult ovariectomized rats. AP transplantation also had no effect on the cortical total calcium content in adult ovariectomized rats. Because previous work showed that the effects of prolactin were age dependent and could be modulated by high-calcium diet, interactions between prolactin and these two parameters were investigated. The results demonstrated that 2.0% wt/wt high-calcium diet significantly increased the tibial total calcium content in 9-wk-old young AP-grafted ovariectomized rats but decreased the tibial total calcium content in 22-wk-old adult rats. As for the vertebrae, the total calcium contents in both young and adult rats were not changed by high-calcium diet. The present results thus indicated that the adult cortical bones were potentially direct targets of prolactin. Moreover, the effects of high physiological prolactin on cortical bones were age dependent and were observed only under the modulation of high-calcium diet condition.

Parathyroid Hormone- and Deoxycorticosterone Acetate-Induced Hypertension in the Rat

1980 ◽  
Vol 58 (5) ◽  
pp. 365-371 ◽  
Author(s):  
A. Berthelot ◽  
A. Gairard
Keyword(s):  
Parathyroid Hormone ◽  
Hormone Secretion ◽  
Sprague Dawley ◽  
Physiological Concentration ◽  
Deoxycorticosterone Acetate ◽  
Calcium Diet ◽  
Arterial Blood ◽  
Sprague Dawley Rats ◽  
High Calcium ◽  
High Calcium Diet

1. Hypertension induced by treatment with deoxycorticosterone acetate and sodium chloride was studied in male Sprague-Dawley rats and related to parathyroid hormone secretion. 2. Lack of parathyroid hormone (due to parathyroidectomy) or decreased parathormone secretion (due to a high-calcium diet) partially inhibited the development of arterial hypertension. 3. In contrast, in thyroparathyroidectomized rats supplemented with thyroxine, the administration of parathyroid hormone rapidly elevated arterial blood pressure. 4. Maintaining a physiological concentration of serum calcium in the absence of parathyroid hormone (by feeding a high-calcium diet to parathyroidectomized rats) was not sufficient to establish mineralocorticoid hypertension. 5. These results show that parathyroid hormone is necessary for the complete development of mineralocorticoid hypertension.

scholarly journals Effect of High‐Calcium Diet on Coronary Artery Disease in Ossabaw Miniature Swine With Metabolic Syndrome

2015 ◽  
Vol 4 (8) ◽  
Author(s):  
Alyssa K. Phillips‐Eakley ◽  
Mikaela L. McKenney‐Drake ◽  
Martin Bahls ◽  
Sean C. Newcomer ◽  
John S. Radcliffe ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Metabolic Syndrome ◽  
Coronary Artery ◽  
Miniature Swine ◽  
Calcium Diet ◽  
High Calcium ◽  
High Calcium Diet ◽  
Artery Disease

Maternal High Calcium Diet Fails to Reverse Rickets in the Osteosclerotic Mouse

1996 ◽  
Vol 330 ◽  
pp. 271-280 ◽  
Author(s):  
Darrell R. Lester ◽  
Mark F. Seifert
Keyword(s):  
Calcium Diet ◽  
High Calcium ◽  
High Calcium Diet

scholarly journals A high calcium diet containing nonfat dry milk reduces weight gain and associated adipose tissue inflammation in diet-induced obese mice when compared to high calcium alone

2012 ◽  
Vol 9 (1) ◽  
pp. 3 ◽  
Author(s):  
Anthony P Thomas ◽  
Tamara N Dunn ◽  
Josephine B Drayton ◽  
Pieter J Oort ◽  
Sean H Adams
Keyword(s):  
Adipose Tissue ◽  
Weight Gain ◽  
Adipose Tissue Inflammation ◽  
Obese Mice ◽  
Tissue Inflammation ◽  
Calcium Diet ◽  
High Calcium ◽  
Dry Milk ◽  
High Calcium Diet ◽  
Nonfat Dry Milk

Effects of a high-calcium diet on serum insulin-like growth factor-1 levels in magnesium-deficient rats

2012 ◽  
Vol 25 (3) ◽  
pp. 126-130 ◽  
Author(s):  
Hiroshi Matsuzaki ◽  
Yasutaka Kajita ◽  
Misao Miwa
Keyword(s):  
Growth Factor ◽  
Serum Insulin ◽  
Insulin Like Growth Factor ◽  
Calcium Diet ◽  
High Calcium ◽  
High Calcium Diet

Effect of High-Calcium Diet on Urinary Oxalate Excretion in Urinary Stone Formers

1988 ◽  
Vol 15 (3-4) ◽  
pp. 264-270 ◽  
Author(s):  
Teruhiro Nakada ◽  
Isoji Sasagawa ◽  
Hidekatsu Furuta ◽  
Takashi Katayama ◽  
Jun Shimazaki
Keyword(s):  
Urinary Stone ◽  
Urinary Oxalate ◽  
Oxalate Excretion ◽  
Calcium Diet ◽  
Stone Formers ◽  
High Calcium ◽  
High Calcium Diet ◽  
Urinary Oxalate Excretion

scholarly journals High calcium diet augments vascular potassium relaxation in hypertensive rats.

Hypertension ◽  
1992 ◽  
Vol 19 (1) ◽  
pp. 85-92 ◽  
Author(s):  
I Pörsti ◽  
P Arvola ◽  
H Wuorela ◽  
H Vapaatalo
Keyword(s):  
Hypertensive Rats ◽  
Calcium Diet ◽  
High Calcium ◽  
High Calcium Diet

High-calcium diet reduces blood pressure, blood volume and preserves vasorelaxation in oral contraceptive-treated female rats

2010 ◽  
Vol 52 (1-2) ◽  
pp. 95-100 ◽  
Author(s):  
Lawrence A. Olatunji ◽  
Ayodele O. Soladoye
Keyword(s):  
Blood Pressure ◽  
Oral Contraceptive ◽  
Blood Volume ◽  
Female Rats ◽  
Calcium Diet ◽  
High Calcium ◽  
High Calcium Diet
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