keyword
MENU ▼
Read by QxMD icon Read
search

calcium absorption

keyword
https://www.readbyqxmd.com/read/27915149/trans-and-paracellular-calcium-transport-along-the-small-and-large-intestine-in-horses
#1
M R Wilkens, L Marholt, N Eigendorf, A S Muscher-Banse, K Feige, B Schröder, G Breves, A Cehak
Intestinal calcium absorption plays a key role in the maintenance of calcium homeostasis and may either occur by paracellular or transcellular mechanisms. The horse has some unique peculiarities in calcium homeostasis compared to other species including a high absorptive capacity for calcium in the intestine, high plasma calcium concentrations, high renal excretion, and low plasma concentrations of vitamin D metabolites. So far, knowledge about the underlying mechanisms and the regulation of intestinal calcium absorption is still limited concerning this species...
November 30, 2016: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27913853/the-role-of-intestinal-oxalate-transport-in-hyperoxaluria-and-the-formation-of-kidney-stones-in-animals-and-man
#2
REVIEW
Jonathan M Whittamore, Marguerite Hatch
The intestine exerts a considerable influence over urinary oxalate in two ways, through the absorption of dietary oxalate and by serving as an adaptive extra-renal pathway for elimination of this waste metabolite. Knowledge of the mechanisms responsible for oxalate absorption and secretion by the intestine therefore have significant implications for understanding the etiology of hyperoxaluria, as well as offering potential targets for future treatment strategies for calcium oxalate kidney stone disease. In this review, we present the recent developments and advances in this area over the past 10 years, and put to the test some of the new ideas that have emerged during this time, using human and mouse models...
December 2, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27913273/the-endocrine-vitamin-d-system-in-the-gut
#3
Antonio Barbáchano, Asunción Fernández-Barral, Gemma Ferrer-Mayorga, Alba Costales-Carrera, María Jesús Larriba, Alberto Muñoz
The active vitamin D metabolite 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) has important regulatory actions in the gut through endocrine and probably also intracrine, autocrine and paracrine mechanisms. By activating the vitamin D receptor (VDR), which is expressed at a high level in the small intestine and colon, 1,25(OH)2D3 regulates numerous genes that control gut physiology and homeostasis. 1,25(OH)2D3 is a major responsible for epithelial barrier function and calcium and phosphate absorption, and the host's defense against pathogens and the inflammatory response by several types of secretory and immune cells...
November 29, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27913205/trp-channels-in-calcium-homeostasis-from-hormonal-control-to-structure-function-relationship-of-trpv5-and-trpv6
#4
REVIEW
Mark K C van Goor, Joost G J Hoenderop, Jenny van der Wijst
Maintaining plasma calcium levels within a narrow range is of vital importance for many physiological functions. Therefore, calcium transport processes in the intestine, bone and kidney are tightly regulated to respectively fine-tune the rate of absorption, storage and excretion. The TRPV5 and TRPV6 calcium channels are viewed as the gatekeepers of epithelial calcium transport. Several calciotropic hormones control the channels at the level of transcription, membrane expression, and function. Recent technological advances have provided the first near-atomic resolution structural models of several TRPV channels, allowing insight into their architecture...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27911936/serum-calcium-magnesium-zinc-and-copper-levels-in-sudanese-women-with-preeclampsia
#5
Abdelmageed Elmugabil, Hamdan Z Hamdan, Anas E Elsheikh, Duria A Rayis, Ishag Adam, Gasim I Gasim
BACKGROUND: Although the exact pathophysiology of preeclampsia is not fully understood, several elemental micronutrient abnormalities have been suggested to play a contributory role in preeclampsia. AIMS: To investigate the levels of calcium, magnesium, zinc and copper in women with preeclampsia. SUBJECTS AND METHODS: A case-control study was conducted in Omdurman Maternity Hospital, Sudan, during the period of September through December 2014...
2016: PloS One
https://www.readbyqxmd.com/read/27910838/hydrogen-substituted-%C3%AE-tricalcium-phosphate-synthesized-in-organic-media
#6
Christoph Stähli, Jürg Thüring, Laëtitia Galea, Solène Tadier, Marc Bohner, Nicola Döbelin
β-Tricalcium phosphate (β-TCP) platelets synthesized in ethylene glycol offer interesting geometries for nano-structured composite bone substitutes but were never crystallographically analyzed. In this study, powder X-ray diffraction and Rietveld refinement revealed a discrepancy between the platelet structure and the known β-TCP crystal model. In contrast, a model featuring partial H for Ca substitution and the inversion of P1O4 tetrahedra, adopted from the whitlockite structure, allowed for a refinement with minimal misfits and was corroborated by HPO4(2-) absorptions in Fourier-transform IR spectra...
December 1, 2016: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
https://www.readbyqxmd.com/read/27908410/elevated-serum-mda-and-depleted-non-enzymatic-antioxidants-macro-minerals-and-trace-elements-are-associated-with-bipolar-disorder
#7
Manjurul Islam Chowdhury, Maimuna Hasan, Mohammad Safiqul Islam, Md Shahid Sarwar, Mohammad Nurul Amin, S M Naim Uddin, Md Zahedur Rahaman, Sujan Banik, Md Saddam Hussain, Kazushige Yokota, Abul Hasnat
Genetic and neurobiological factors are considered to be the major causes of mood and mental disorders. However, over the past few years, increased levels of serum malondialdehyde and altered levels of various non-enzymatic antioxidants and essential minerals involved in abnormal functional activity have been identified as major contributing factors to the pathogenesis of several neurological disorders. The aim of this study was to determine the levels of the serum lipid peroxidation product malondialdehyde (MDA), antioxidants (vitamin A, E and C), macro-minerals (calcium, potassium and sodium) and trace elements (zinc, iron and selenium) in patients with bipolar disorder and to explore their role in disease progression...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27905009/increased-serum-al-levels-in-hemodialysis-patients-kept-enhanced-during-a-2-year-prospective-study
#8
Maria L Reina de la Torre, Herminia Lopez García de la Serrana, Loreto Martí Del Moral, Magdalena Palomares Bayo, Miguel Navarro-Alarcón
The regulation of mineral homeostasis is altered in hemodialysis patients with renal insufficiency, producing increased risk for secondary diseases like cardiovascular ones. We hypothesized that risen serum aluminum (Al) concentration in hemodialysis patients kept enhanced during a 2-year longitudinal study is associated with enhanced cardiovascular risk and influenced by medical treatments. This study reports the prospective monitoring of serum Al levels in six-monthly samplings over 2 years in 116 hemodialysis patients and a control group of 50 healthy adults...
November 30, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27902451/vitamin-d-and-male-reproductive-system
#9
Pablo R Costanzo, Pablo Knoblovits
Vitamin D deficiency is a highly prevalent worldwide condition and affects people of all ages. The most important role of vitamin D is the regulation of intestinal calcium absorption and metabolism of calcium and phosphorus to maintain muscle and bone homeostasis. Furthermore, in recent years it has been discovered that the vitamin D receptor (VDR) is widely distributed in many organs and tissues where vitamin D can perform other actions that include the modulation of the immune response, insulin secretion, anti-proliferative effect on cells of vascular smooth muscle, modulation of the renin-angiotensin-aldosterone system and regulates cell growth in several organs...
December 1, 2016: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/27900619/current-perspectives-on-antihypertensive-probiotics
#10
REVIEW
Eric Banan-Mwine Daliri, Byong H Lee, Deog H Oh
Hypertension is a major risk factor for cardiovascular diseases. Optimizing blood pressure results in an overall health outcome. Over the years, the gut microbiota has been found to play a significant role in host metabolic processes, immunity, and physiology. Dietary strategies have therefore become a target for restoring disturbed gut microbiota to treat metabolic diseases. Probiotics and their fermented products have been shown in many studies to lower blood pressure by suppressing nitrogen oxide production in microphages, reducing reactive oxygen species, and enhancing dietary calcium absorption...
November 29, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27895098/brain-aluminium-accumulation-and-oxidative-stress-in-the-presence-of-calcium-silicate-dental-cements
#11
K Demirkaya, B Can Demirdöğen, Z Öncel Torun, O Erdem, E Çırak, Y M Tunca
Mineral trioxide aggregate (MTA) is a calcium silicate dental cement used for various applications in dentistry. This study was undertaken to test whether the presence of three commercial brands of calcium silicate dental cements in the dental extraction socket of rats would affect the brain aluminium (Al) levels and oxidative stress parameters. Right upper incisor was extracted and polyethylene tubes filled with MTA Angelus, MTA Fillapex or Theracal LC, or left empty for the control group, were inserted into the extraction socket...
November 27, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27872163/role-of-autophagy-in-cadmium-induced-testicular-injury
#12
Y-J Wang, J Yan, F Yin, L Li, Y-G Qin, C-Y Meng, R-F Lu, L Guo
The testis is sensitive to cadmium, but studies investigating cadmium-induced testicular injury have not yet clearly revealed the underlying mechanisms. This study aimed to investigate the injurious effects of cadmium on rat testes and the role that autophagy plays in this process. Wistar rats were randomly divided into four groups and intraperitoneally injected with 0.2 (low), 0.4 (middle), and 0.8 mg/kg·body weight (high) cadmium chloride for 5 weeks, while the control rats were injected with equal volume of saline...
November 21, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27867811/dramatic-mitigation-of-bone-pain-after-phosphorus-replacement-therapy-in-a-subject-with-fgf23-related-hypophosphatemic-osteomalacia
#13
Fuminori Tatsumi, Megumi Horiya, Akihito Tanabe, Momoyo Nishioka, Yoshiro Fushimi, Junpei Sanada, Yurie Hirata, Shintaro Irie, Tomoe Kinoshita, Shinji Kamei, Masashi Shimoda, Tomoatsu Mune, Kohei Kaku, Hideaki Kaneto
INTRODUCTION: Fibroblast growth factor 23 (FGF23) is secreted from bone and suppresses the absorption of phosphorus in renal proximal tubule and in intestinal tract. Therefore, the increase of serum FGF23 levels leads to hypophosphatemic situations. Tumor-induced osteomalacia is often induced by various tumors, but it is often difficult to identify the localization of tumor, because most of the FGF23-producing tumors are small and could be observed in any part of the body. CASE DESCRIPTION: Here we report a case of elderly female subject with FGF23-related hypophosphatemic osteomalacia who repeatedly experienced severe bone pain and fragility fracture in various parts of the body...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27854286/-english-disease-historical-notes-on-rickets-the-bone-lung-link-and-child-neglect-issues
#14
REVIEW
Mingyong Zhang, Fan Shen, Anna Petryk, Jingfeng Tang, Xingzhen Chen, Consolato Sergi
Nutritional or classical rickets (here labeled as "rickets") is a worldwide disease involving mostly infants and young children having inadequate sunlight exposure, often associated with a low dietary intake of Vitamin D. Rickets targets all layers of society independently of economic status with historical information spanning more than two millennia. Vitamin D is critical for the absorption of calcium and prevention of rickets in children as well as osteomalacia in adults. The initial and misleading paradigm of the 19th and 20th centuries that rickets may have been the consequence of infection has been, indeed, reversed following the identification of the Vitamin D molecule's important role in the function of the immune system...
November 15, 2016: Nutrients
https://www.readbyqxmd.com/read/27847289/nephrolithiasis-after-bariatric-surgery-a-review-of-pathophysiologic-mechanisms-and-procedural-risk
#15
REVIEW
Umer Hasan Bhatti, Andrew J Duffy, Kurt Eric Roberts, Amir Hafeez Shariff
Obesity alone is a known risk factor for nephrolithiasis, and bariatric surgery has been linked to a higher incidence of post-operative new-onset nephrolithiasis. The mean interval from bariatric surgery to diagnosis of nephrolithiasis, ranges from 1.5 to 3.6 years. The stone risk is greatest for purely malabsorptive procedures, intermediate for Roux-en-Y gastric bypass and lowest for purely restrictive procedures (laparoscopic adjustable gastric banding, laparoscopic sleeve gastrectomy) where it approaches or is reduced below that of non-operative obese controls...
November 12, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27845599/n-acetylcysteine-protects-against-star-fruit-induced-acute-kidney-injury
#16
Maria Heloisa Massola Shimizu, Pedro Henrique França Gois, Rildo Aparecido Volpini, Daniele Canale, Weverton Machado Luchi, Leila Froeder, Ita Pfeferman Heilberg, Antonio Carlos Seguro
BACKGROUND: Star fruit (SF) is a popular fruit, commonly cultivated in many tropical countries, that contains large amount of oxalate. Acute oxalate nephropathy and direct renal tubular damage through release of free radicals are the main mechanisms involved in SF-induced acute kidney injury (AKI). The aim of this study was to evaluate the protective effect of N-acetylcysteine (NAC) on SF-induced nephrotoxicity due to its potent antioxidant effect. MATERIALS AND METHODS: Male Wistar rats received SF juice (4 mL/100 g body weight) by gavage after a 12 h fasting and water deprivation...
November 15, 2016: Renal Failure
https://www.readbyqxmd.com/read/27843822/impact-of-antiepileptic-drugs-on-bone-health-need-for-monitoring-treatment-and-prevention-strategies
#17
REVIEW
Ekta Arora, Harmanjit Singh, Yogendra Kumar Gupta
Epilepsy is the most common neurological disorder affecting approximately 50 million people worldwide. In India, overall prevalence of epilepsy is reported to be 5.59/1000 population. Antiepileptic drugs (AEDs) constitute the main-stay of treatment with a large number of AEDs available in the market. High incidence of adverse effects is a major limitation with AEDs. One of the major concerns is significant metabolic effects on the bone. However, little attention has been paid to this issue because most of the bone effects remain subclinical for a long time and may take years to manifest clinically...
April 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/27833859/associations-of-25-hydroxyvitamin-d-with-markers-of-inflammation-insulin-resistance-and-obesity-in-black-and-white-community-dwelling-adults
#18
Jennifer L Jackson, Suzanne E Judd, Bhupesh Panwar, Virginia J Howard, Virginia G Wadley, Nancy S Jenny, Orlando M Gutiérrez
AIMS: Vitamin D is a fat-soluble vitamin classically known for its role in calcium absorption and bone health. Growing evidence indicates that vitamin D deficiency may be associated with inflammation, insulin resistance, and obesity. However, prior studies examining the association of vitamin D with metabolic risk factors had relatively low representation of individuals of black race, limiting their ability to characterize associations of vitamin D and parameters of metabolic health in black vs...
September 2016: Journal of Clinical & Translational Endocrinology
https://www.readbyqxmd.com/read/27826312/differential-gene-expression-in-rhododendron-fortunei-roots-colonized-by-an-ericoid-mycorrhizal-fungus-and-increased-nitrogen-absorption-and-plant-growth
#19
Xiangying Wei, Jianjun Chen, Chunying Zhang, Dongming Pan
Ericoid mycorrhizal (ERM) fungi are specifically symbiotic with plants in the family Ericaceae. Little is known thus far about their symbiotic establishment and subsequent nitrogen (N) uptake at the molecular level. The present study devised a system for establishing a symbiotic relationship between Rhododendron fortunei Lindl. and an ERM fungus (Oidiodendron maius var. maius strain Om19), quantified seedling growth and N uptake, and compared transcriptome profiling between colonized and uncolonized roots using RNA-Seq...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27816436/hypocalcemia-after-thyroidectomy-in-patients-with-a-history-of-bariatric-surgery
#20
Nathalie Chereau, Cindy Vuillermet, Camille Tilly, Camille Buffet, Christophe Trésallet, Sophie Tezenas du Montcel, Fabrice Menegaux
BACKGROUND: Hypocalcemia is a common complication after total thyroidectomy. Previous bariatric surgery could be a higher factor risk for hypocalcemia due to alterations in calcium absorption and vitamin D deficiency. OBJECTIVES: To evaluate incidence and factors involved in the risk of hypocalcemia (transient and permanent) and the postoperative outcomes of these patients after total thyroidectomy. SETTING: University hospital in Paris, France...
September 28, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
keyword
keyword
66057
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"