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https://www.readbyqxmd.com/read/28905934/conversion-and-pharmacokinetics-profiles-of-a-novel-pro-drug-of-3-n-butylphthalide-potassium-2-1-hydroxypentyl-benzoate-in-rats-and-dogs
#1
Jiang Li, Shao-Feng Xu, Ying Peng, Nan Feng, Ling Wang, Xiao-Liang Wang
Potassium 2-(1-hydroxypentyl)-benzoate (dl-PHPB) is a novel pro-drug of 3-n-butylphthalide (dl-NBP) that is used to treat ischemic stroke. Currently, dl-PHPB is in phase II-III clinical trials in China. In this study, we investigated the conversion and pharmacokinetics profiles of dl-PHPB in vitro and in vivo. The conversion of dl-PHPB to dl-NBP was pH- and calcium-dependent, and paraoxonase was identified as a major enzyme for the conversion in rat plasma. The pharmacokinetics, tissue distribution and excretion of dl-PHPB were studied and compared with equal-molar doses of dl-NBP in rats and dogs...
September 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28888959/genotoxicity-and-sub-chronic-toxicity-of-myolution-%C3%A2-branched-chain-keto-acids
#2
Caroline Hall, Ian Grayson
MYOLUTION(®), which consists of a mixture of the branched chain keto acids, keto-leucine, keto-isoleucine and keto-valine, as their calcium salts, may potentially be used as a food ingredient based on the reported contributions of these compounds to muscle health and exercise performance. Tests on genotoxicity and sub-chronic toxicity were performed to evaluate the safety of branched chain keto acids. No genotoxic effects were observed in the bacterial mutation assay or the in vitro micronucleus assay in human lymphocytes...
September 6, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28888328/a-population-based-approach-to-assess-the-heritability-and-distribution-of-renal-handling-of-electrolytes
#3
Flore Moulin, Belen Ponte, Menno Pruijm, Daniel Ackermann, Yassine Bouatou, Idris Guessous, Georg Ehret, Olivier Bonny, Antoinette Pechère-Bertschi, Jan A Staessen, Fred Paccaud, Pierre-Yves Martin, Michel Burnier, Bruno Vogt, Olivier Devuyst, Murielle Bochud
The handling of electrolytes by the kidney is essential for homeostasis. However, the heritability of these processes, the first step in gene discovery, is poorly known. To help clarify this, we estimated the heritability of serum concentration, urinary excretion, renal clearance, and fractional excretion of sodium, potassium, magnesium, calcium, phosphate, and chloride in a population-based study. Nuclear families were randomly selected from the general population in Lausanne, Geneva, and Bern, Switzerland, and urine collected over 24-hour periods...
September 6, 2017: Kidney International
https://www.readbyqxmd.com/read/28882565/evidence-of-disordered-calcium-metabolism-in-adolescent-girls-with-type-1-diabetes-an-observational-study-using-a-dual-stable-calcium-isotope-technique
#4
David R Weber, Kimberly O O'Brien, George J Schwartz
Type 1 diabetes (T1D) is associated with skeletal abnormalities including low bone density and increased fracture risk. The pathophysiology underlying T1D related skeletal fragility remains unknown. The objective of this study was to use a dual-stable calcium isotope method to investigate the effects of T1D on calcium absorption and estimated calcium retention in adolescent females. Twenty adolescent females with T1D were admitted for a 24-h calcium absorption study using oral ((44)Ca) and intravenous ((42)Ca) stable isotopes for determination of percent gastrointestinal calcium absorption and estimated calcium retention...
September 4, 2017: Bone
https://www.readbyqxmd.com/read/28882031/a-multiregional-italian-cohort-of-24-hour-urine-metabolic-evaluation-in-renal-stone-formers
#5
Francesco Esperto, Martino Marangella, Alberto Trinchieri, Michele Petrarulo, Roberto Miano
BACKGROUND: Nephrolithiasis is a common condition with several studies documenting an increased prevalence over the past four decades. EAU and AUA guidelines recommend 24-hour urine metabolic evaluation in high-risk stone formers. Aim of this study is to retrospectively evaluate the first three years of experience with Lithotest® (Biohealth Italia Srl, Turin, Italy) through the analysis of demographic, clinical and biochemical data collected from a large cohort of patients with kidney stones...
September 7, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28875008/renal-hemosiderosis-among-iranian-transfusion-dependent-%C3%AE-thalassemia-major-patients
#6
Mozhgan Hashemieh, Mitra Radfar, Azita Azarkeivan, Seyed Mohammad Taghi Hosseini Tabatabaei, Sedigheh Nikbakht, Mehdi Yaseri, Kourosh Sheibani
Background: In recent years, the success in management of thalassemic patients, has allowed for some previously unrecognized complications including renal abnormalities to emerge. This prospective study aimed to investigate kidney iron overload by means of MRI T2* and also renal function based on laboratory tests for early markers of glomerular and tubular dysfunction among adult Iranian transfusion-dependent thalassemia major patients. Subjects and Methods: Two-hundred and two patients with transfusion-dependent β-thalassemia major were included in this study in Zafar Adult Thalassemia Center, Tehran, Iran...
April 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/28866981/carpal-spasm-in-a-girl-as-initial-presentation-of-celiac-disease-a-case-report
#7
Atifete Ramosaj-Morina, A Keka-Sylaj, V Hasbahta, A Baloku-Zejnullahu, M Azemi, R Zunec
BACKGROUND: Celiac disease is an immune-mediated disorder elicited by ingestion of gluten in genetically susceptible persons. This disorder is characterized by specific histological changes of the small intestine mucosa resulting in malabsorption. This case was written up as it was an unusual and dramatic presentation of celiac disease. CASE PRESENTATION: We report the case of a 3-year-old Albanian girl who presented at our clinic with carpal spasms and hand paresthesia...
September 4, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28859746/oxalosis-in-a-patient-with-livedo-reticularis
#8
Meriam Triki, Meriem Ksentini, Rim Kallel, Emna Bahloul, Faiçal Jarraya, Abderrahmen Masmoudi, Tahya Boudawara
A 27-year-old man with terminal renal failure requiring peritoneal dialysis for the past 2 years was referred to the dermatologist for evaluation of red violaceous macular skin lesions consistent with livedo reticularis. These lesions had appeared suddenly on his legs (Figure 1). He had first experienced recurrent nephrolithiasis at the age of 14. Results from urine analysis and abdominal ultrasound revealed chronic kidney failure. Because the patient had a sister with similar findings, primary hyperoxaluria (PH) was suspected and genetic testing was performed in all members of his family...
2017: Skinmed
https://www.readbyqxmd.com/read/28846576/blood-and-tissue-silver-levels-following-application-of-silver-based-dressings-to-sulfur-mustard-chemical-burns
#9
David J Barillo, Claire R Croutch, Frances Reid, Tara Culley, William Sosna, Julie Roseman
Silver-based dressings are commonly used in burn care. Silver sulfadiazine use is associated with elevated blood, urine, and tissue levels of silver ion. We examined wound and tissue levels of silver ion in a two-species model of sulfur mustard chemical burn injury treated with two different silver-based dressings. Superficial dermal and moderate thickness dermal chemical burns were induced in 16 hairless guinea pigs and in 16 Gottingen minipigs by exposure to sulfur mustard vapor. After debridement, silver-nylon burn dressings or silver-calcium alginate dressings were applied and changed every 7 days until wound healing or a maximum of 60 days post exposure...
September 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28840637/reduction-in-microalbuminuria-by-calcium-channel-blockers-in-patients-with-type-2-diabetes-mellitus-and-hypertension-a-randomized-open-label-active-controlled-superiority-parallel-group-clinical-trial
#10
You-Cheol Hwang, Kun-Ho Yoon, Bong-Soo Cha, Kwan-Woo Lee, Hak Chul Jang, Kyung Wan Min, Choon Hee Chung, Moon-Kyu Lee
BACKGROUND: It has been suggested that renoprotection with calcium channel blockers (CCBs) may differ. This study aimed to compare the anti-proteinuric effect of different CCBs in patients with type 2 diabetes (T2D). METHODS: A multicentre, randomized, open-label, active-controlled study was performed in seven centres in Korea. A total of 74 patients with T2D and microalbuminuria treated with renin-angiotensin system (RAS) blockers were randomized to a cilnidipine 10 mg treatment (n=38) or amlodipine 5 mg treatment (n=36)...
August 24, 2017: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/28828886/topiramate-and-metabolic-acidosis-an-evolving-story
#11
Shruti Gupta, Jennifer J Gao, Michael Emmett, Andrew Z Fenves
Topiramate is an anticonvulsant that is being increasingly used for a number of different off-label indications. Its inhibition of carbonic anhydrase isoenzymes can lead to metabolic acidosis, elevated urine pH, reduced urine citrate, and hypercalciuria, thereby creating a milieu that is ripe for calcium phosphate stone formation. In this review, we describe a case of topiramate-induced metabolic acidosis. We review the frequency of metabolic acidosis among children and adults, as well as the mechanism of hyperchloremic metabolic acidosis and renal tubular acidosis in topiramate users...
September 1, 2017: Hospital Practice (Minneapolis)
https://www.readbyqxmd.com/read/28822553/vitamin-d-status-in-growing-dairy-goats-and-sheep-influence-of-ultraviolet-b-radiation-on-bone-metabolism-and-calcium-homeostasis
#12
M V Nemeth, M R Wilkens, A Liesegang
The aim of this study was to investigate how controlled UVB irradiation in combination with reduced nutritional vitamin D (vitD) supply affects vitD status and Ca metabolism of growing goats and sheep. The hypothesis was that, like dairy cows, goats and sheep are able to compensate for the missing nutritional supply of vitD through endogenous production in the skin, with the consequence of a high vitD status and a balanced Ca homeostasis. Sixteen lambs and 14 goat kids aged 3 and a half months were housed in an UVB free environment and fed hay and a vitD-free concentrate over a period of 13 wk...
August 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28816531/prevalence-and-predictors-of-primary-hyperparathyroidism-amongpatients-with-urolithiasis
#13
S Sharma, A Rastogi, S K Bhadada, P Singh, S Varshney, A Behera, A Bhansali, S K Singh, D S Rao
BACKGROUND: Urolithiasis may be the only presenting manifestation of primary hyperparathyroidism (PHPT), and early detection of PHPT in such patients may prevent future urolithiasis and other PHPT complications. OBJECTIVES: To study the prevalence and predictors of PHPT in patients presenting with urolithiasis. SUBJECTS & METHODS: Consecutive patients presenting with urolithiasis were evaluated for clinical and biochemical manifestations of PHPT with serum and urine calcium, serum intact parathyroid hormone and 25 (OH) vitamin D...
August 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28810891/the-variation-in-urinary-calcium-levels-in-adult-patients-with-fracture-and-surgical-intervention
#14
Junfei Wang, Xin Zheng, Liming Zhang, Yifan Zhang, Jin Xiong, Yixin Cheng, Hongfei Shi, Xusheng Qiu, Leqin Zhou, Xizhao Sun
BACKGROUND: Generally, a higher calcium diet is fed to fracture patients after surgery. However, recent studies have indicated that higher dietary calcium intakes increase the risk of urinary stones for fracture patients. Therefore, this study aimed to observe the variation in urinary calcium levels among fracture patients who underwent surgery, based on fracture type, fracture location, age and gender. METHODS: A total of 768 subjects were enrolled in this study from 2012 to 2015 and were divided into 2 groups: group A (fracture patients who underwent surgery) and group B (normal patients without fracture)...
August 15, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28809621/cardiovascular-risk-factors-and-mortality-in-children-with-chronic-kidney-disease
#15
Abdullahi Mudi, Caroline Dickens, Cecil Levy, Daynia Ballot
BACKGROUND: Cardiovascular disease (CVD) begins early in children with chronic kidney disease (CKD), and its progression is determined by the presence of single or multiple cardiovascular risk factors (CVRFs). OBJECTIVE: To determine the prevalence of CVRFs in children with CKD and their association with mortality in children on chronic dialysis. METHODS: This comparative cross-sectional study recruited children aged 5 - 18 years with all stages of CKD...
July 28, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28808443/angiotensin-converting-enzyme-inhibition-and-parathyroid-hormone-secretion
#16
Sarah Zaheer, Jenifer M Brown, Molly Connors, Jonathan S Williams, Gail K Adler, Anand Vaidya
BACKGROUND: Prior studies suggest that renin-angiotensin-aldosterone system (RAAS) inhibitors decrease parathyroid hormone (PTH) secretion. OBJECTIVE: To evaluate the effect of angiotensin-converting enzyme inhibitors (ACEi) on serum PTH in participants with and without primary hyperparathyroidism (P-HPT). METHODS: An open-label, single-arm, pilot study whereby participants with and without P-HPT had PTH were evaluated before and after 1 week of maximally tolerated lisinopril therapy...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28806302/surgery-for-primary-hyperparathyroidism-adherence-to-consensus-guidelines-in-an-academic-health-system
#17
Eric J Kuo, Mostafa A Al-Alusi, Lin Du, Albert Shieh, Masha J Livhits, Angela M Leung, Michael W Yeh
OBJECTIVE: To determine the extent to which consensus guidelines for surgery in patients with primary hyperparathyroidism (PHPT) are followed within an academic health system. BACKGROUND: Previous studies have shown that adherence to consensus guidelines in community practice is low. METHODS: Adults with biochemically confirmed PHPT who received primary care within an academic health system were identified from 2005 to 2015. Multivariable logistic regression was used to analyze predictors of parathyroidectomy (PTx)...
August 11, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28776878/a-method-for-estimating-radioactive-cesium-concentrations-in-cattle-blood-using-urine-samples
#18
Itaru Sato, Ryoma Yamagishi, Jun Sasaki, Hiroshi Satoh, Kiyoshi Miura, Kaoru Kikuchi, Kumiko Otani, Keiji Okada
In the region contaminated by the Fukushima nuclear accident, radioactive contamination of live cattle should be checked before slaughter. In this study, we establish a precise method for estimating radioactive cesium concentrations in cattle blood using urine samples. Blood and urine samples were collected from a total of 71 cattle on two farms in the 'difficult-to-return zone'. Urine (137) Cs, specific gravity, electrical conductivity, pH, sodium, potassium, calcium, and creatinine were measured and various estimation methods for blood (137) Cs were tested...
August 4, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28776078/sarna-mediated-activation-of-trpv5-reduces-renal-calcium-oxalate-deposition-in-rat-via-decreasing-urinary-calcium-excretion
#19
Tao Zeng, Xiaolu Duan, Wei Zhu, Yang Liu, Wenqi Wu, Guohua Zeng
Hypercalciuria is a main risk factor for kidney stone  formation. TRPV5 is the gatekeeper protein for mediating calcium transport and reabsorption in the kidney. In the present study, we tested the effect of TRPV5 activation with small activating RNA (saRNA), which could induce gene expression by targeting the promoter of the gene, on ethylene glycol (EG)-induced calcium oxalate (CaOx) crystals formation in rat kidney. Five pairs of RNA activation sequences targeting the promoter of rat TRPV5 were designed and synthesized...
August 3, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28775219/assessment-of-dietary-food-and-nutrient-intake-and-bone-density-in-children-with-eczema
#20
T F Leung, S S Wang, F Y Kwok, L W Leung, C M Chow, E K Hon
INTRODUCTION: Dietary restrictions are common among patients with eczema, and such practice may lead to diminished bone mineral density. This study investigated dietary intake and bone mineral density in Hong Kong Chinese children with eczema. METHODS: This cross-sectional and observational study was conducted in a university-affiliated teaching hospital in Hong Kong. Chinese children aged below 18 years with physician-diagnosed eczema were recruited from our paediatric allergy and dermatology clinics over a 6-month period in 2012...
August 4, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
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