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https://www.readbyqxmd.com/read/28550491/influence-of-diet-on-the-course-of-inflammatory-bowel-disease
#1
Laura Tasson, Cristina Canova, Maria Grazia Vettorato, Edoardo Savarino, Renzo Zanotti
BACKGROUND: While the importance of diet in the pathogenesis of inflammatory bowel disease (IBD) is generally recognized, influence of food on the course of IBD is little understood. AIM: The purpose of this study was to assess the association between food intake and course of disease in patients with IBD. METHODS: We performed a cross-sectional study on 103 adult patients (50 with active disease and 53 in remission, divided by their calprotectin level), who completed a food frequency questionnaire on their intake of several foods over 1 year...
May 26, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28549992/thyroid-hormone-treatment-activates-protective-pathways-in-both-in-vivo-and-in-vitro-models-of-neuronal-injury
#2
Jianrong Li, Ines Donangelo, Kiyomi Abe, Oscar Scremin, Sujie Ke, Feng Li, Anna Milanesi, Yan-Yun Liu, Gregory A Brent
Thyroid hormone plays an important role in brain development and adult brain function, and may influence neuronal recovery after Traumatic Brain Injury (TBI). We utilized both animal and cell culture models to determine the effects of thyroid hormone treatment, post TBI or during hypoxia, on genes important for neuronal survival and neurogenesis. We show that TBI in rats is associated with a reduction in serum thyroxine (T4) and triiodothyronine (T3). A single dose of levothyroxine (T4), one hour after injury, increased serum T4 and normalized serum T3 levels...
May 23, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28549843/topical-coenzyme-q10-demonstrates-mitochondrial-mediated-neuroprotection-in-a-rodent-model-of-ocular-hypertension
#3
Benjamin Michael Davis, Kailin Tian, Milena Pahlitzsch, Jonathan Brenton, Nivedita Ravindran, Gibran Butt, Giulia Malaguarnera, Eduardo Normando, Li Guo, Maria Francesca Cordeiro
Coenzyme Q10 (CoQ10) is a mitochondrial-targeted antioxidant with known neuroprotective activity. Its ocular effects when co-solubilised with α-tocopherol polyethylene glycol succinate (TPGS) were evaluated. In vitro studies confirmed that CoQ10 was significantly protective in different retinal ganglion cell (RGC) models. In vivo studies in Adult Dark Agouti (DA) rats with unilateral surgically-induced ocular hypertension (OHT) treated with either CoQ10/TPGS micelles or TPGS vehicle twice daily for three weeks were performed, following which retinal cell health was assessed in vivo using DARC (Detection of Apoptotic Retinal Cells) and post-mortem with Brn3a histological assessment on whole retinal mounts...
May 23, 2017: Mitochondrion
https://www.readbyqxmd.com/read/28549670/cilastatin-attenuates-vancomycin-induced-nephrotoxicity-via-p-glycoprotein
#4
Dai Sig Im, Hye Jin Shin, Keum Jin Yang, So Young Jung, Ho Yeon Song, Hyeon Seok Hwang, Hyo-Wook Gil
BACKGROUND: Oxidative stress is one of the main pathogenic mechanisms in vancomycin-induced nephrotoxicity (VIN). Some studies suggest proximal renal tubular cell necrosis by vancomycin accumulation as a mechanism of nephrotoxicity, and other studies demonstrate that cilastatin has protective effects against drug-induced nephrotoxicity. We investigated whether cilastatin regulates P-gp expression and whether cilastation prevents VIN. MATERIALS AND METHODS: We conducted an in vitro study using an immortalized proximal tubule epithelial cell line from a normal adult human kidney (HK-2) and an in vivo study using male C57BL/6J mice...
May 23, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28549098/high-protein-foods-and-physical-activity-protect-against-age-related-muscle-loss-and-functional-decline
#5
M Loring Bradlee, Jabed Mustafa, Martha R Singer, Lynn L Moore
Background: Some clinical trials suggest that protein supplementation enhances the effects of resistance exercise on skeletal muscle mass (SMM); fewer studies examine the effects of diets rich in protein-source foods on SMM and functional status among community-dwelling adults. Methods: Data from the Framingham Offspring study including diet (three-day records, exams 3 and 5), physical activity (exams 2 and 4), percent SMM (%SMM) (exams 6 and 7), and functional performance (exams 5 through 8) were used to evaluate independent and combined effects of physical activity and high-protein foods on adjusted mean %SMM (using analysis of covariance) and risk of functional decline (using Cox proportional hazard's models)...
May 25, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28548684/origins-of-anterior-posterior-polarity-by-localized-activation-of-disheveled
#6
Jeff Chieh-Fu Peng, Lingyu Wang, Athula H Wikramanayake
Most animal eggs have a primordial polarity, termed the animal-vegetal (AV) axis, that frequently predicts the anterior-posterior (AP) axis of the embryo and adult. Transformation of the AV polarity of the egg to the AP polarity of the embryo in many species is mediated by the localized activation of canonical Wnt (cWnt) signaling in vegetal blastomeres by maternal determinants. In the sea urchin egg, cWnt signal transduction is facilitated by localized "activation" of the Disheveled protein, a central regulator of Wnt signaling...
May 26, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28548680/modulating-the-oxidative-environment-during-mesenchymal-stem-cells-chondrogenesis-with-serum-increases-collagen-accumulation
#7
Suwimol Tangtrongsup, John D Kisiday
Chondrogenesis of mesenchymal stem cells (MSCs) is induced in culture conditions that have been associated with oxidative stress, although the extent to which the oxidative environment affects differentiation and extracellular matrix (ECM) accumulation is not known. The objectives of this study were to evaluate the oxidative environment during MSCs chondrogenesis in conventional serum-free medium, and the effect of serum-supplementation on intracellular reactive oxygen species (ROS) and chondrogenesis. Young adult equine MSCs were seeded into agarose and cultured in chondrogenic medium, with or without 5% fetal bovine serum (FBS), for up to 15 days...
May 26, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28548651/foetal-haemoglobin-blood-transfusion-and-retinopathy-of-prematurity-in-very-preterm-infants-a-pilot-prospective-cohort-study
#8
C J Stutchfield, A Jain, D Odd, C Williams, R Markham
PurposeTo identify if there is an association between foetal haemoglobin (HbF) concentration and retinopathy of prematurity (ROP) in very preterm infants.Patients and methodsProspective cohort study. Infants born <32 weeks' gestational age or <1501 g in two tertiary neonatal units between January 2012 and May 2013 (n=42) were enrolled. HbF and adult haemoglobin (HbA) concentrations were measured using high-pressure liquid chromatography from blood samples sent as part of routine neonatal care once routinely requested laboratory tests had been performed...
May 26, 2017: Eye
https://www.readbyqxmd.com/read/28548476/is-cold-blood-cardioplegia-absolutely-superior-to-cold-crystalloid-cardioplegia-in-aortic-valve-surgery
#9
Daniel A Lerman, Matilde Otero-Losada, Kiddy Ume, Pablo A Salgado, Sai Prasad, Kelvin Lim, Bruno Péault, Nasri Alotti
BACKGROUND: Experimental evidence suggests that blood cardioplegia (BCP) may be superior to cold crystalloid cardioplegia (CCP) for myocardial protection. However, robust clinical data are lacking. We compared post-operative outcome of patients undergoing aortic valve replacement (AVR) using cold anterograde-retrograde intermittent BCP versus anterograde (CCP). METHODS: Adult consecutive isolated AVR performed between April 2006 and February 2011 at the Royal Infirmary Hospital of Edinburgh were retrospectively analyzed...
May 26, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28548312/vitamin-d-dependent-rickets-type-1b-25-hydroxylase-deficiency-a-rare-condition-or-a-misdiagnosed-condition
#10
Molin A, Wiedemann A, Demers N, Kaufmann M, Do Cao J, Mainard L, Dousset B, Journeau P, Abeguile G, Coudray N, Mittre H, Richard N, Weryha G, Sorlin A, Jones G, Kottler Ml, Feillet F
Vitamin D requires a two-step activation by hydroxylation: the first step is catalyzed by hepatic 25-hydroxylase (CYP2R1, 11p15.2), and the second one is catalyzed by renal 1α-hydroxylase (CYP27B1, 12q13.1), which produces the active hormonal form of 1,25-(OH)2 D. Mutations of CYP2R1 have been associated with Vitamin D-dependent rickets type 1B (VDDR1B), a very rare condition that has only been reported to affect 4 families to date. We describe 7 patients from two unrelated families who presented with homozygous loss-of-function mutations of CYP2R1...
May 26, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28548285/neonatal-hypoxia-ischemia-in-rat-increases-doublecortin-concentration-in-the-cerebrospinal-fluid
#11
Catherine Brégère, Urs Fisch, Martin H Sailer, Wolfgang S Lieb, Laurie Chicha, Fabienne Goepfert, Thomas Kremer, Raphael Guzman
Doublecortin (DCX) is a microtubule-associated protein widely used as an indicator of neurogenesis in immunohistochemical analyses of the postmortem adult brain. A recent study reported that DCX can be quantified in the cerebrospinal fluid (CSF) from healthy rats between postnatal day 0 (P0) and P30. However, it is currently unclear whether the concentration of DCX in the CSF (CSF-DCX) may represent a measure of endogenous neurogenesis. To address this question, the present study examined the impact of a neonatal hypoxic-ischemic (HI) brain injury, known to induce neurogenesis, on CSF-DCX...
May 26, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28548243/cross-reactive-saliva-iga-antibodies-to-oxidized-ldl-and-periodontal-pathogens-in-humans
#12
Ramin Akhi, Chunguang Wang, Mikael Kyrklund, Outi Kummu, S Pauliina Turunen, Kati Hyvärinen, Arja Kullaa, Tuula Salo, Pirkko J Pussinen, Sohvi Hörkkö
AIM: Oxidized Low-Density Lipoproteins (oxLDL) are formed as a result of lipid peroxidation and are highly immunogenic and proatherogenic. In this study, saliva antibodies binding to oxLDL, Porphyromonas gingivalis (Pg) and Aggregatibacter actinomycetemcomitans (Aa), were characterized and their cross reactivity was evaluated. MATERIAL & METHODS: Resting and stimulated saliva samples were collected from 36 healthy adults (mean age 26 years). Saliva IgA, IgG and IgM autoantibody levels to copper oxidized LDL (CuOx-LDL) and malondialdehyde acetaldehyde modified LDL (MAA-LDL), were determined with chemiluminescence immunoassay...
May 26, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28547849/heparan-sulfate-alterations-in-extracellular-matrix-structures-and-fgf-2-signaling-impairment-in-the-aged-neurogenic-niche
#13
Taihei Yamada, Aurelien Kerever, Yusuke Yoshimura, Yuji Suzuki, Risa Nonaka, Kyohei Higashi, Toshihiko Toida, Frederic Mercier, Eri Arikawa-Hirasawa
Adult neurogenesis in the subventricular zone of the lateral ventricle decreases with age. In the subventricular zone, the specialized extracellular matrix structures, known as fractones, contact neural stem cells and regulate neurogenesis. Fractones are composed of extracellular matrix components, such as heparan sulfate proteoglycans. We previously found that fractones capture and store fibroblast growth factor 2 (FGF-2) via heparan sulfate binding, and may deliver FGF-2 to neural stem cells in a timely manner...
May 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28547783/aortic-arch-origin-of-the-left-vertebral-artery-an-anatomical-and-radiological-study-with-significance-for-avoiding-complications-with-anterior-approaches-to-the-cervical-spine
#14
Gabrielle G Tardieu, Bryan Edwards, Fernando Alonso, Koichi Watanabe, Tsuyoshi Saga, Moriyoshi Nakamura, Mayuko Motomura, Raghu Sampath, Joe Iwanaga, Oded Goren, Stephen Monteith, Rod J Oskouian, Marios Loukas, R Shane Tubbs
INTRODUCTION: Complications from anterior approaches to the cervical spine are uncommon with normal anatomy. However, variant anatomy might predispose one to an increased incidence of injury during such procedures. We hypothesized that left vertebral arteries that arise from the aortic arch instead of the subclavian artery might take a more medial path in their ascent making them more susceptible to iatrogenic injury. MATERIALS AND METHODS: Fifty human adult cadavers were examined for left vertebral arteries having an aortic arch origin and these were dissected along their entire cervical course...
May 25, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28546552/melatonin-mediated-mitophagy-protects-against-early-brain-injury-after-subarachnoid-hemorrhage-through-inhibition-of-nlrp3-inflammasome-activation
#15
Shenglong Cao, Sudeep Shrestha, Jianru Li, Xiaobo Yu, Jingyin Chen, Feng Yan, Guangyu Ying, Chi Gu, Lin Wang, Gao Chen
The NLRP3 inflammasome is activated in the early period following subarachnoid hemorrhage(SAH), resulting in inflammatory responses. Recent studies have shown that activation of NLRP3 inflammasome is suppressed by autophagy, but the potential mechanism is unclear. In this study, we examined whether mitophagy was involved in the beneficial effect of melatonin and its relationship with NLRP3 inflammasome activation after SAH. In total, 130 adult-male SD rats were randomly divided into four groups: sham group, SAH + vehicle group, SAH + melatonin group, and SAH + 3-methyladenine (3-MA) + melatonin group...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28545163/coccygeal-body-revisited-an-immunohistochemical-study-using-donated-elderly-cadavers
#16
Zhe Wu Jin, Kwang Ho Cho, Hyung Suk Jang, Gen Murakami, Jose Francisco Rodríguez-Vázquez, Masahito Yamamoto, Shin-Ichi Abe
To describe the normal anatomy and histology of the adult coccygeal body (CB) and to discuss about the origin and function. Using immunohistochemistry, we examined 29 CBs found in 32 elderly donated cadavers without macroscopic pathology in the pelvis. The CB was usually located in or near the anococcygeal ligaments. It was almost always composed of multiple masses or nodules of round glomus cells (smooth muscle actin, or SMA++). However, the CB sometimes contained abundant dilated veins with scattered glomus cells...
May 25, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28545161/classic-galactosemia-study-on-the-late-prenatal-development-of-galt-specific-activity-in-a-sheep-model
#17
Ana I Coelho, Jörgen Bierau, Martijn Lindhout, Jelle Achten, Boris W Kramer, M Estela Rubio-Gozalbo
BACKGROUND: Classic galactosemia results from deficient activity of galactose-1-phosphate uridylyltransferase (GALT), a key enzyme of galactose metabolism. Despite early diagnosis and early postnatal therapeutic intervention, patients still develop neurologic and fertility impairments. Prenatal developmental toxicity has been hypothesized as a determinant factor of disease. In order to shed light on the importance of prenatal GALT activity, several studies have examined GALT activity throughout development...
May 25, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28544806/can-soil-microbial-diversity-influence-plant-metabolites-and-life-history-traits-of-a-rhizophagous-insect-a-demonstration-in-oilseed-rape
#18
Tom Lachaise, Morgane Ourry, Lionel Lebreton, Anne-Yvonne Guillerm-Erckelboudt, Juliette Linglin, Chrystelle Paty, Valérie Chaminade, Nathalie Marnet, Julie Aubert, Denis Poinsot, Anne-Marie Cortesero, Christophe Mougel
Interactions between plants and phytophagous insects play an important part in shaping the biochemical composition of plants. Reciprocally plant metabolites can influence major life history traits in these insects and largely contribute to their fitness. Plant rhizospheric microorganisms are an important biotic factor modulating plant metabolites and adaptation to stress. While plant-insects or plant-microorganisms interactions and their consequences on the plant metabolite signature are well-documented, the impact of soil microbial communities on plant defenses against phytophagous insects remains poorly known...
May 23, 2017: Insect Science
https://www.readbyqxmd.com/read/28544766/barriers-and-facilitators-of-mentoring-for-trainees-and-early-career-investigators-in-rheumatology-research-current-state-identification-of-needs-and-roadmap-to-an-inter-institutional-adult-rheumatology-mentoring-program
#19
Alexis Ogdie, Jeffrey A Sparks, Sheila T Angeles-Han, Kathleen Bush, Flavia V Castelino, Amit Golding, Yihui Jiang, J Michelle Kahlenberg, Alfred H J Kim, Yvonne C Lee, Kirthi Machireddy, Michael J Ombrello, Ami A Shah, Zachary S Wallace, Peter A Nigrovic, Una E Makris
OBJECTIVES: Determine perceived barriers and facilitators to effective mentoring for early career rheumatology investigators and develop a framework for an inter-institutional mentoring program. METHODS: Focus groups or interviews with rheumatology fellows, junior faculty, and mentors were conducted, audiotaped and transcribed. Content analysis was performed using NVivo software. Themes were grouped into categories (e.g., mentor-mentee relationship, barriers and facilitators of a productive relationship)...
May 23, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28544728/index-case-finding-facilitates-identification-and-linkage-to-care-of-children-and-young-adults-living-with-hiv-aids-in-malawi
#20
Saeed Ahmed, Rachael A Sabelli, Katie Simon, Nora E Rosenberg, Elijah Kavuta, Mwelura Harawa, Spencer Dick, Frank Linzie, Peter N Kazembe, Maria H Kim
OBJECTIVES: Evaluation of a novel index case-finding and linkage-to-care program to identify and link HIV-infected children (1-15 years) and young adults (>15-24 years) to care. METHODS: HIV-infected patients enrolled in HIV services were screened and those who reported untested household members (index cases) were offered home or facility-based HIV testing and counseling (HTC) of their household by a community health worker (CHW). HIV-infected household members identified were enrolled in a follow-up program offering home and facility-based follow-up by CHWs...
May 23, 2017: Tropical Medicine & International Health: TM & IH
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