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caffeine mineral loss

Angelo Gatta, Alberto Verardo, Marco Di Pascoli, Sandro Giannini, Massimo Bolognesi
Metabolic disturbances of bone are frequent in patients with chronic liver disease. The prevalence of osteoporosis among patients with advanced chronic liver disease is reported between 12% and 55%; it is higher in primary biliary cirrhosis. All patients with advanced liver disease should be screened for osteoporosis with a densitometry, especially if the etiology is cholestatic and in the presence of other risk factors. Clinical relevance of hepatic osteodystrophy increases after liver transplantation. After liver transplant, a rapid loss of bone mineral density can be detected in the first 6 months, followed by stabilization and slight improvement of the values...
September 2014: Clinical Cases in Mineral and Bone Metabolism
Tatiana Pereira Lima, Carolina Ferreira Nicoletti, Julio Sergio Marchini, Wilson Salgado Junior, Carla Barbosa Nonino
The rapid weight loss that occurs in obese patients submitted to Roux-en-y gastric bypass (RYGB) as well as the changes in dietary pattern and the intestinal malabsorption result in changes in bone mineral density (BMD). The objective of the present study was to assess the changes in BMD after the weight loss induced by RYGB using ultrasound of the phalanges and compare the results with those obtained by dual-energy X-ray absorptiometry (DXA). We conducted a 1-yr prospective longitudinal study on women with grade III obesity submitted to RYGB...
October 2014: Journal of Clinical Densitometry
Mark C Houston
Macronutrient and micronutrient deficiencies are very common in the general population and may be even more common in patients with hypertension and cardiovascular disease due to genetic or environmental causes and prescription drug use. These deficiencies will have an enormous impact on present and future cardiovascular health and outcomes, such as hypertension, myocardial infarction, stroke and renal disease, and on overall health costs. The diagnosis and treatment of these nutrient deficiencies can reduce blood pressure; improve vascular health, endothelial dysfunction, and vascular biology; and decrease cardiovascular events...
2013: Alternative Therapies in Health and Medicine
Ming Lu, Lars-Ove Farnebo, Robert Bränström, Catharina Larsson
CONTEXT AND OBJECTIVE: Caffeine is a highly consumed psychoactive substance present in our daily drinks. Independent studies have reported associations between caffeine consumption, low bone mineral density, and urinary calcium loss, as well as impaired bone development in vitro and in vivo. Calcium (Ca(2+)), vitamin D, and PTH are critical regulators of bone remodeling. A possible association between caffeine and parathyroid gland function has been suggested in the literature. DESIGN, SETTING, AND PATIENTS: Effects of caffeine on PTH secretion and Ca(2+) levels were determined by batch incubation and Fura-2, respectively, in pathological parathyroid cells...
August 2013: Journal of Clinical Endocrinology and Metabolism
Jiwon Choi, So Yoen Choi, Sun Young Lee, Jae Yoon Lee, Hong Sung Kim, Soo Young Lee, Na Kyung Lee
The consumption of caffeine from some common beverages has been associated with low bone mass by inducing urinary calcium loss and deceasing bone mineral density. However, the effect of caffeine on osteoclast differentiation is still unclear. Here, we demonstrate that caffeine directly enhances osteoclast differentiation and maturation. TRAP staining showed that the number of larger (>100 μm) osteoclastic cells as well as of TRAP-positive multinucleated cells was increased by caffeine treatment. Among the MAP kinases, caffeine specifically activated p38 MAP kinase, which in turn, controlled osteoclast differentiation and maturation...
May 2013: Cellular Signalling
L Langsetmo, C L Hitchcock, E J Kingwell, K S Davison, C Berger, S Forsmo, W Zhou, N Kreiger, J C Prior
BACKGROUND: Physical activity (PA) is an important modifiable risk factor for both bone mineral density (BMD) and body mass index (BMI). However, BMI is itself strongly predictive of BMD. Our aim was to determine the association between PA and BMD, with consideration of BMI as a potential mediating factor. METHODS: The Canadian Multicentre Osteoporosis Study (CaMos) is a population-based prospective cohort study of Canadian women and men. PA was determined from interviewer-administered questionnaires at baseline and Year 5 and summarized as daily energy expenditure in total metabolic equivalents of the task multiplied by minutes/day (MET*m/d)...
January 2012: Bone
Tiberio M Frisoli, Roland E Schmieder, Tomasz Grodzicki, Franz H Messerli
Lifestyle changes have been shown to effect significant blood pressure (BP) reductions. Although there are several proposed neurohormonal links between weight loss and BP, body mass index itself appears to be the most powerful mediator of the weight-BP relationship. There appears to be a mostly linear relationship between weight and BP; as weight is regained, the BP benefit is mostly lost. Physical activity, but more so physical fitness (the physiological benefit obtained from physical activity), has a dose-dependent BP benefit but reaches a plateau at which there is no further benefit...
December 2011: European Heart Journal
Suzie Aparecida Lacerda, Renata Inahara Matuoka, Rander Moreira Macedo, Sergio Olavo Petenusci, Alessandra Aparecida Campos, Luiz Guilherme Brentegani
Caffeine induces loss of calcium and influences the normal development of bone. This study investigated the effects of coffee on bone metabolism in rats by biochemical measurement of calcium, bone densitometry and histometry. Male rats, born of female treated daily with coffee and with coffee intake since born, were anesthetized, subjected to extraction of the upper right incisor, and sacrificed 7, 21 and 42 days after surgery. Blood and urine samples were taken, and their maxilla radiographed and processed to obtain 5-µm-thick semi-serial sections stained with hematoxylin and eosin...
2010: Brazilian Dental Journal
Mark C Houston
Macronutrient and micronutrient deficiencies are very common in the general population, and may be even more common in patients with hypertension and cardiovascular disease due to genetic and environmental causes, and prescription drug use. Vascular biology assumes a pivotal role in the initiation and perpetuation of hypertension and target organ damage sequelae. Endothelial activation, oxidative stress and vascular smooth muscle dysfunction (hypertrophy, hyperplasia and remodeling) are initial events that initiate hypertension...
June 2010: Expert Review of Cardiovascular Therapy
Mark C Houston
Macronutrient and micronutrient deficiencies are very common in the general population and may be even more common in patients with hypertension and cardiovascular disease due to genetic, environmental causes and prescription drug use. The Hypertension Institute in Nashville, TN, has evaluated micronutrient deficiencies and oxidation status, in a group of hypertensive versus normotensive patients. There are significant differences in numerous intracellular micronutrients and oxidation status between these two groups...
June 2010: Therapeutic Advances in Cardiovascular Disease
Helena Hallström, Håkan Melhus, Anders Glynn, Lars Lind, Ann-Christine Syvänen, Karl Michaëlsson
BACKGROUND: Drinking coffee has been linked to reduced calcium conservation, but it is less clear whether it leads to sustained bone mineral loss and if individual predisposition for caffeine metabolism might be important in this context. Therefore, the relation between consumption of coffee and bone mineral density (BMD) at the proximal femur in men and women was studied, taking into account, for the first time, genotypes for cytochrome P450 1A2 (CYP1A2) associated with metabolism of caffeine...
2010: Nutrition & Metabolism
Sophie A Jamal, Victoria J D Swan, Jacques P Brown, David A Hanley, Jerilynn C Prior, Alexandra Papaioannou, Lisa Langsetmo, Robert G Josse
BACKGROUND: The relationship between kidney function and bone loss is unclear. STUDY DESIGN: A prospective observational study. SETTING & PARTICIPANTS: 191 men and 444 women aged > or = 50 years participating in a population-based observational study designed to determine risk factors for bone loss and fractures. PREDICTORS: The primary predictor of change in bone mineral density (BMD) was estimated creatinine clearance (using the Cockcroft-Gault formula) measured at baseline and stratified by quartiles...
February 2010: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
M Spiegel-Adolf, G C Henny, E W Ashkenaz
1. X-ray diffraction studies of sartorius muscles of Rana pipiens were made in a new x-ray diffraction camera which permits exposures of 3 to 6 minutes. The object-film distance can be varied from 20 to 80 mm; the muscle inside the camera can be electrically stimulated while contracting isotonically or isometrically, and can be observed by a special device. After exposures up to 30 minutes (approximately 40,830 r) muscles are still alive and responsive. 2. Contrary to the x-ray diffraction pattern of powdered dry muscle, which pattern consists of two rings corresponding to spacings of 4...
November 20, 1944: Journal of General Physiology
Pin-Zhen Lu, Ching-Yu Lai, Wen-Hsiung Chan
Caffeine consumption is a risk factor for osteoporosis, but the precise regulatory mechanisms are currently unknown. Here, we show that cell viability decreases in osteoblasts treated with caffeine in a dose-dependent manner. This cell death is attributed primarily to apoptosis and to a smaller extent, necrosis. Moreover, caffeine directly stimulates intracellular oxidative stress. Our data support caffeine-induced apoptosis in osteoblasts via a mitochondria-dependent pathway. The apoptotic biochemical changes were effectively prevented upon pretreatment with ROS scavengers, indicating that ROS plays a critical role as an upstream controller in the caffeine-induced apoptotic cascade...
May 2008: International Journal of Molecular Sciences
Sheryl F Vondracek, Laura B Hansen, Michael T McDermott
Although clinically significant bone loss and fractures in healthy premenopausal women are rare, more women are seeking evaluation for osteoporosis from their health care providers. As pharmacists are in an ideal position to influence the management of premenopausal women with osteoporosis, it is important that pharmacists understand the available data on bone loss, fractures, and risk factors and secondary causes for osteoporosis, as well as when to recommend testing and treatment in premenopausal women. Limited data are available; therefore, we conducted a MEDLINE search of the literature from January 1993-August 2008...
March 2009: Pharmacotherapy
Shivani Sahni, Marian T Hannan, Jeffrey Blumberg, L Adrienne Cupples, Douglas P Kiel, Katherine L Tucker
BACKGROUND: In vitro and in vivo studies suggest that carotenoids may inhibit bone resorption and stimulate proliferation and differentiation of osteoblasts. Few studies have examined the association between carotenoid intake (other than beta-carotene) and bone mineral density (BMD). OBJECTIVE: We evaluated associations between total and individual carotenoid intake (alpha-carotene, beta-carotene, beta-cryptoxanthin, lycopene, and lutein+zeaxanthin) with BMD at the hip, spine, and radial shaft and the 4-y change in BMD...
January 2009: American Journal of Clinical Nutrition
Christopher W Ryan, Dezheng Huo, James W Stallings, Ronald L Davis, Tomasz M Beer, Laura T McWhorter
OBJECTIVES: Androgen deprivation therapy (ADT) is associated with loss of bone mineral density (BMD) and increased fracture risk. We sought to examine the impact of ADT and lifestyle variables on BMD in 120 patients with prostate cancer without bone metastases entering a randomized clinical trial. METHODS: A total of 120 patients with prostate cancer and without bone metastases who had been treated with ADT for less than 12 months were enrolled in a clinical trial of zoledronic acid versus placebo...
July 2007: Urology
Janice J Twiss, Gloria J Gross, Nancy L Waltman, Carol D Ott, Ada M Lindsey
PURPOSE: To describe the baseline healthy lifestyle behaviors (dietary, calcium, vitamin D, caffeine and alcohol intake, smoking history, and physical activity) of postmenopausal breast cancer survivors (BCS); and to identify any relationship of healthy lifestyle behaviors with bone mineral density (BMD) at the forearm, total hip and spine, L1-L4. DATA SOURCES: Self-reported responses to a demographic and health status questionnaire, to a 3-day Diet Record, and to the 7-Day Physical Activity Questionnaire-Adapted provided data for the lifestyle behaviors...
October 2006: Journal of the American Academy of Nurse Practitioners
R M Hackman, P J Havel, H J Schwartz, J C Rutledge, M R Watnik, E M Noceti, S J Stohs, J S Stern, C L Keen
OBJECTIVE: To determine the safety and efficacy of a dietary supplement with a low dose of ephedra and caffeine in overweight/obese premenopausal female subjects. DESIGN: A 9-month, double-blind, randomized control study compared the efficacy and safety of a dietary supplement with ephedra and caffeine to a control supplement. SUBJECTS: Sixty-one healthy, premenopausal women with body mass index (BMI) from 27 to 39 kg/m2 were randomly assigned and received a dietary supplement (40 mg/day ephedra alkaloids, 100 mg/day caffeine, high potency mixture of vitamins, minerals, omega-3 fatty acids) or a control supplement for 9 months...
October 2006: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Ritesh Dhar, C William Stout, Mark S Link, Munther K Homoud, Jonathan Weinstock, N A Mark Estes
Athletes commonly use drugs and dietary supplements to improve athletic performance or to assist with weight loss. Some of these substances are obtainable by prescription or by illegal means; others are marketed as supplements, vitamins, or minerals. Nutritional supplements are protected from Food and Drug Administration regulation by the 1994 US Dietary Supplement Health and Education Act, and manufacturers are not required to demonstrate proof of efficacy or safety. Furthermore, the Food and Drug Administration lacks a regulatory body to evaluate such products for purity...
October 2005: Mayo Clinic Proceedings
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