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https://www.readbyqxmd.com/read/28328623/a-novel-user-friendly-model-to-predict-corticosteroid-utilization-in-newly-diagnosed-patients-with-ulcerative-colitis
#1
Nabeel Khan, Dhruvan Patel, Yash Shah, Gary Lichtenstein, Yu-Xiao Yang
BACKGROUND: Corticosteroid (CS) use is an important marker of poor prognosis in ulcerative colitis (UC). Our aim was to develop and validate a model to predict the risk of CS utilization over the course of disease in newly diagnosed patients with UC. METHODS: Newly diagnosed patients with UC from a nationwide VA cohort were followed over time to evaluate factors predictive of CS use. Multivariate logistic regression was performed. Model development was performed in a random 2/3 of the total cohort and then validated in the remaining 1/3...
March 21, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28328529/evaluation-of-vitamin-d-prophylaxis-in-3-36-month-old-infants-and-children
#2
Alper Ozcan, Mustafa Kendirci, Meda Kondolot, Fatih Kardas, Leyla Akın
BACKGROUND: Vitamin D (VD) deficiency (VDD) is still a population-based health problem that affects people at different ages. The aim of this study was to evaluate VD prophylaxis for the prevention of VDD in (3-36)-month-old infants and children. METHODS: Infants and children aged between 3 and 36 months, with different etiologies, admitted to outpatient and inpatient clinics from October 2010 to October 2011 at the Children's Hospital of Erciyes University, were enrolled for the study...
March 22, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28328225/palladium-catalyzed-%C3%AE-mesylation-of-simple-amide-via-primary-sp-3-c-h-activation
#3
Ren Zhao, Wenjun Lu
A β-mesylation of primary sp(3) C-H bonds from simple amides with methanesulfonic anhydride (Ms2O) has been established successfully at 80 °C in a Pd(OAc)2 (catalyst)/K2S2O8 (oxidant)/CF3CH2OH (solvent) system. These amide substrates involve N-monosubstituted linear, branch, or cyclic alkanes, and electron-deficient benzyl compounds. The β-mesylated amide products can be converted easily to β-fluoroamides or β-lactams through inter- or intramolecular SN2 processes.
March 22, 2017: Organic Letters
https://www.readbyqxmd.com/read/28328213/reversible-coordination-of-boron-aluminum-zinc-magnesium-and-calcium-hydrogen-bonds-to-bent-cul2-fragments-heavy-%C3%AF-complexes-of-the-lightest-coinage-metal
#4
Alexandra Hicken, Andrew J P White, Mark R Crimmin
A series of copper(I) complexes bearing electron-deficient β-diketiminate ligands have been prepared. The study includes [{{ArNC(CR3)}2CH}Cu(η(2)-toluene)n] (Ar = Mes, R = F, n = 0.5, [12·tol]; Ar = C6F5, R = Me, n = 1, [2·tol]; Ar = 2,6-Cl2C6H3, R = H, n = 0.5, [32·tol]). Reactions of [1-3n·tol] with boranes, alanes, a zinc hydride, a magnesium hydride, and a calcium hydride generate the corresponding σ complexes ([1-3·B], [3·B'], [3·Al], [3·Al'], [1-3·Zn], [1·Mg], and [1·Ca]). These species all form reversibly, being in equilibrium with the arene solvates in solution...
March 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28328135/confirmation-of-cagsss-syndrome-as-a-distinct-entity-in-a-danish-patient-with-a-novel-homozygous-mutation-in-iars2
#5
Shahida Moosa, Annette Haagerup, Pernille Axel Gregersen, Karin Kastberg Petersen, Janine Altmüller, Holger Thiele, Peter Nürnberg, Tae-Joon Cho, Ok-Hwa Kim, Gen Nishimura, Bernd Wollnik, Ida Vogel
Since the original description of the IARS2-related cataracts, growth hormone deficiency, sensory neuropathy, sensorineural hearing loss, skeletal dysplasia syndrome (CAGSSS; OMIM 616007) in an extended consanguineous family of French-Canadian descent, no further patients have been reported. IARS2 (OMIM 612801) encodes the mitochondrial isoleucine-tRNA synthetase which belongs to the class-I aminoacyl-tRNA synthetase family, and has been implicated in CAGSSS and a form of Leigh syndrome. Here, we report on a female Danish patient with a novel homozygous IARS2 mutation, p...
April 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28326355/high-prevalence-of-vitamin-d-deficiency-in-2-17%C3%A2-year-olds-presenting-with-acute-fractures-in-southern-australia
#6
Dae Hwan Kwon, David Krieser, Chris Harris, Abhay Khot, Peter R Ebeling, Christine P Rodda
AIM: To determine vitamin D deficiency risk and other lifestyle factors in children aged 2-17 years presenting with an acute fracture to Sunshine Hospital. METHODS: A prospective observational study was undertaken using a convenience sample data collected from children aged 2-17 years of age presenting with an acute fracture. Recruitment was undertaken over a 3-month period from February to May 2014. Risk factors for vitamin D deficiency (skin pigmentation, hours spent outdoors, sunscreen use and obesity) were identified...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326165/neurochemical-and-motor-changes-in-mice-with-combined-mutations-linked-to-parkinson-s-disease
#7
Xiang Bai, Margaret Chia-Ying Wey, Paul Anthony Martinez, Chao Shi, Elizabeth Fernandez, Randy Strong
Considerable evidence suggests that oxidative stress plays a role in the pathogenesis of Parkinson's disease (PD), the most prevalent neurodegenerative movement disorder. Reduced expression of aldehyde dehydrogenase-1 (ALDH1) and glutathione peroxidase-1 (GPX1), enzymes that function to detoxify aldehydes and hydroxyl radicals, respectively, has been reported in the substantia nigra of patients who died with PD. To determine whether deficiency in these two genes contributes to the pathogenesis of PD, mice were generated with homozygous null mutations of both Aldh1a1 (the murine homolog of ALDH1) and Gpx1 genes [knockout (KO) mice]...
2017: Pathobiology of Aging & Age related Diseases
https://www.readbyqxmd.com/read/28324830/chitinase-3-like-1-deficient-donor-splenocytes-accentuated-the-pathogenesis-of-acute-graft-versus-host-diseases-through-regulating-t-cell-expansion-and-type-i-inflammation
#8
Zengyao Li, Jian Gu, Jing Liu, Qin Zhu, Hao Lu, Yunjie Lu, Jianhua Rao, Ling Lu, Xuehao Wang
Acute graft-versus-host disease (aGVHD) is a major complication following transplantation, limiting the success of this therapy. Chitinase 3-like-1 (CHI3L1), a member of the glycosyl hydrolase 18 family, plays a critical role in bacterial infections, allergic disease and a variety of malignancies. Here, we investigated whether CHI3L1 could affect the pathogenesis of aGVHD in a mouse allo-HCT model. In this study, we show that CHI3L1 deficiency in donor T cells increased the severity of aGVHD through enhancing systemic and local inflammation...
March 16, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28324172/enzymes-involved-in-branched-chain-amino-acid-metabolism-in-humans
#9
REVIEW
María M Adeva-Andany, Laura López-Maside, Cristóbal Donapetry-García, Carlos Fernández-Fernández, Cristina Sixto-Leal
Branched-chain amino acids (leucine, isoleucine and valine) are structurally related to branched-chain fatty acids. Leucine is 2-amino-4-methyl-pentanoic acid, isoleucine is 2-amino-3-methyl-pentanoic acid, and valine is 2-amino-3-methyl-butanoic acid. Similar to fatty acid oxidation, leucine and isoleucine produce acetyl-coA. Additionally, leucine generates acetoacetate and isoleucine yields propionyl-coA. Valine oxidation produces propionyl-coA, which is converted into methylmalonyl-coA and succinyl-coA. Branched-chain aminotransferase catalyzes the first reaction in the catabolic pathway of branched-chain amino acids, a reversible transamination that converts branched-chain amino acids into branched-chain ketoacids...
March 21, 2017: Amino Acids
https://www.readbyqxmd.com/read/28324039/unique-regenerative-mechanism-to-replace-bone-lost-during-dietary-bone-depletion-in-weanling-mice
#10
Matilda H-C Sheng, Kin-Hing William Lau, Ram Lakhan, Abu Shufian Ishtiaq Ahmed, Charles H Rundle, Patra Biswanath, David J Baylink
This study was undertaken to determine the mechanism whereby calcitropic hormones and mesenchymal stem cell progeny changes involved in bone repletion, a regenerative bone process that restores the bone lost to calcium deficiency. To initiate depletion, weanling mice with a mixed C57BL/6 (75%) and CD1 (25%) genetic background were fed a calcium-deficient diet (0.01%) for 14 days. For repletion, the mice were re-fed a control diet containing 1.2% calcium for 14 days. Depletion decreased plasma calcium and increased plasma PTH, 1,25(OH)2D, and CTX...
January 26, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323965/long-acting-ctp-modified-hgh-mod-4023-results-of-a-safety-and-dose-finding-study-in-ghd-children
#11
Nataliya Zelinska, Violeta Iotova, Julia Skorodok, Oleg Malievsky, Valentina Peterkova, Lubov Samsonova, Ron G Rosenfeld, Zvi Zadik, Michal Jaron-Mendelson, Ronit Koren, Leanne Amitzi, Dmitri Raduk, Oren Hershkovitz, Gili Hart
Context: Daily injections are required for growth hormone replacement therapy, which may cause low compliance as a result of inconvenience and distress in patients. Objective: CTP-modified human growth hormone (MOD-4023) is developed for once-a-week dosing regimen in GH-deficient (GHD) adults and children. The present trial was a safety and dose-finding study for weekly MOD-4023 in GHD children. Design: a multi-center, open-label, randomized, controlled Phase 2 study in children with GHD, evaluating the safety, tolerability, PK/PD and efficacy of 3 different weekly MOD-4023 doses, compared to daily r-hGH...
January 31, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323928/physical-activity-vitamin-d-and-incident-atherosclerotic-cardiovascular-disease-in-whites-and-blacks-the-aric-study
#12
Kathleen Chin, Di Zhao, Martin Tibuakuu, Seth S Martin, Chiadi E Ndumele, Roberta Florido, B Gwen Windham, Eliseo Guallar, Pamela L Lutsey, Erin D Michos
Context: Physical activity (PA) is associated with 25-hydroxyvitamin D [25(OH)D] levels. Both are associated with atherosclerotic cardiovascular disease (ASCVD), but their joint association with ASCVD risk is unknown. Objective: To examine the dose-response between PA and 25(OH)D, and to assess effect modification of 25(OH)D and PA with ASCVD risk. Design: Cross-sectional and prospective study using Poisson and linear regression. Setting: Community-dwelling Atherosclerosis Risk in Communities cohort...
February 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323910/progressive-development-of-pth-resistance-in-patients-with-inactivating-mutations-on-the-maternal-allele-of-gnas
#13
Alessia Usardi, Asmaa Mamoune, Elodie Nattes, Jean-Claude Carel, Anya Rothenbuhler, Agnès Linglart
Background: PTH resistance is characterized by hypocalcaemia, hyperphosphatemia and elevated PTH in absence of vitamin D deficiency. Pseudohypoparathyroidism (PHP) type 1A (or iPPSD2, inactivating Signaling PTH/PTHrp Disorder 2 according to the new classification) is caused by mutations in the maternal GNAS allele. Objective: To assess PTH resistance over time in 20 patients affected by iPPSD2 (PHP1A), diagnosed because of family history, ectopic ossification or short stature and carrying a GNAS mutation...
February 21, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323405/oxygen-vacancy-enables-markedly-enhanced-magnetic-resonance-imaging-guided-photothermal-therapy-of-a-gd3-doped-contrast-agent
#14
Dalong Ni, Jiawen Zhang, Jing Wang, Ping Hu, Yingying Jin, Zhongmin Tang, Zhenwei Yao, Wenbo Bu, Jianlin Shi
The Gd3+-based contrast agents (CAs) are the most prevailing and widely used for enhanced magnetic resonance imaging (MRI). Numbers of approaches have been developed to regulate the key parameters in order to obtain high-relaxivity CAs, according to the classic Solomon-Bloembergen-Morgen theory. Herein, a method of controlling oxygen vacancies in inorganic nanosized CAs has been developed for largely accelerated proton relaxation to obtain a high r1 value. Such a strategy is verified on oxygen-deficient PEG-NaxGdWO3 nanorods, which exhibit remarkable r1 value up to 80 mM-1s-1 (at 0...
March 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28321612/serial-serum-immunoglobulin-g-igg-trough-levels-in-patients-with-x-linked-agammaglobulinemia-on-replacement-therapy-with-intravenous-immunoglobulin-its-correlation-with-infections-in-indian-children
#15
Deepti Suri, Sagar Bhattad, Avinash Sharma, Anju Gupta, Amit Rawat, Shobha Sehgal, Surjit Singh, Sudhir Gupta
Patients with primary antibody deficiency (PAD) are being increasingly diagnosed in the developing world. However, care of these children continues to remain suboptimal due to financial and social constraints. Immunoglobulin (Ig) trough level is an important predicting factor for infections in children on replacement immunoglobulin therapy. There are no data on this aspect from the developing world. Therefore, we studied serial immunoglobulin G (IgG) trough levels in 14 children with X-linked agammaglobulinemia (XLA) receiving replacement intravenous immunoglobulin (IVIG)...
March 21, 2017: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/28321611/iron-deficiency-and-iron-deficiency-anemia-in-3-5-months-old-breastfed-healthy-infants
#16
Sudarsan Krishnaswamy, Dharmagat Bhattarai, Bhavneet Bharti, Prateek Bhatia, Reena Das, Deepak Bansal
OBJECTIVE: To assess the prevalence of iron deficiency (ID) and iron deficiency anemia (IDA) in predominantly breastfed, 3-5-mo-old infants, born at term, with a birth weight ≥ 2.5 kg. METHODS: The cross-sectional study was conducted in the outpatient department of a tertiary care center from January 2013 through December 2014. INCLUSION CRITERIA: Age: 90-180 d, exclusively/predominantly breastfed, birth weight ≥ 2.5 kg and term gestation...
March 21, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28321478/the-anterolateral-complex-in-anterior-cruciate-ligament-deficient-knees-demonstrate-sonographic-abnormalities-on-high-resolution-sonography
#17
Masahito Yoshida, Elmar Herbst, Macio Albers, Volker Musahl, Freddie H Fu, Kentaro Onishi
PURPOSE: The presence of anterolateral ligament of the knee is still controversial, and some physicians prefer to call this structure anterolateral complex (ALC) to infer plural nature of structures involved. The purpose of this study was to describe the scanning techniques and to classify various sonographic appearances of the tibial-side ALC of the knee in subjects with anterior cruciate ligament (ACL) injury. It was hypothesized that sonographic abnormity of the ALC would be associated with ACL injury history...
March 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28321436/pneumococcal-antibody-titers-a-comparison-of-patients-receiving-intravenous-immunoglobulin-versus-subcutaneous-immunoglobulin
#18
Pamella F Abghari, Pavadee Poowuttikul, Elizabeth Secord
Purpose: Immunoglobulin replacement is the mainstay treatment in patients with humoral immunodeficiencies, yet a handful of patients continue to develop sinopulmonary infections while on therapy. The objective of our study was to compare immunoglobulin G (IgG) pneumococcal antibody levels in patients with humoral immune deficiencies who have been on intravenous immunoglobulin (IVIG) replacement for at least 1 year to those on subcutaneous immunoglobulin (SCIG) therapy for at least 1 year. Methods: A retrospective chart review was completed on 28 patients...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28321086/acquired-thrombotic-thrombocytopenic-purpura-with-a-smoldering-clinical-course
#19
Chiaki Naito, Yoshiyuki Ogawa, Kunio Yanagisawa, Takuma Ishizaki, Masahiro Mihara, Masaki Hayakawa, Masanori Matsumoto, Yoshihisa Nojima, Hiroshi Handa
Acquired thrombotic thrombocytopenic purpura (aTTP) is caused by a deficiency of ADAMTS13 activity due to neutralizing auto-autoantibodies (inhibitors) against ADAMTS13. Patients with aTTP show a rapid and fatal clinical course, unless an effective therapeutic intervention such as plasma exchange therapy (PEX) is performed. There is, however, a small population of patients who show a smoldering clinical course, for which no effective treatment strategy has yet been established. We herein report a 77-year-old man, who had repeated episodes of cerebral infarction and persistent thrombocytopenia over several months, but was not correctly diagnosed as having aTTP at a local hospital...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28319154/effectiveness-of-community-based-complementary-food-supplement-yingyangbao-distribution-in-children-aged-6-23-months-in-poor-areas-in-china
#20
Jie Wang, Suying Chang, Liyun Zhao, Wentao Yu, Jian Zhang, Qingqing Man, Li He, Yifan Duan, Hui Wang, Robert Scherpbier, Shi-An Yin
BACKGROUND: Poor growth and micronutrient deficiency mainly attack older infants and young children. Some countries have adopted clinically effective measures to combat malnutrition, but the compliance and improvement in efficacy of intervention vehicles in national programs require evaluation. METHODS: Baseline and follow-up cross-sectional surveys were conducted before and after a nutrition intervention program in 3 national poverty counties in China. Soybean-based complementary food supplements called Yingyangbao (YYB) in Chinese and training materials on child feeding were distributed to households with children aged 6-23 months for 18 months...
2017: PloS One
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