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https://www.readbyqxmd.com/read/27898953/impact-of-improving-dietary-amino-acid-balance-for-lactating-sows-on-efficiency-of-dietary-amino-acid-utilization-and-transcript-abundance-of-genes-encoding-lysine-transporters-in-mammary-tissue
#1
L Huber, C F M de Lange, C W Ernst, U Krogh, N L Trottier
Lactating multiparous Yorkshire sows ( = 64) were used in 2 experiments to test the hypothesis that reducing dietary CP intake and improving AA balance through crystalline AA (CAA) supplementation improves apparent dietary AA utilization efficiency for milk production and increases transcript abundance of genes encoding Lys transporter proteins in mammary tissue. In Exp. 1, 40 sows were assigned to 1 of 4 diets: 1) high CP (HCP; 16.0% CP, as-fed basis; analyzed concentration), 2) medium-high CP (MHCP; 15.7% CP), 3) medium-low CP (MLCP; 14...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898927/effect-of-feeding-strategy-on-environmental-impacts-of-pig-fattening-in-different-contexts-of-production-evaluation-through-life-cycle-assessment
#2
A N T R Monteiro, F Garcia-Launay, L Brossard, A Wilfart, J-Y Dourmad
Life cycle assessment (LCA) has been used in many studies to evaluate the effect of feeding strategy on the environmental impact of pig production. However, because most studies have been conducted in European conditions, the question of possible interactions with the context of production is still under debate. The objective of this study was to evaluate these effects in 2 contrasted geographic contexts of production, South America (Brazil) and Europe (France). The LCA considered the process of pig fattening, including production and transport of feed ingredients and feed, raising of fattening pigs, and manure storage, transport, and spreading...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898582/antithrombotic-therapy-in-patients-with-cerebral-microbleeds
#3
Duncan Wilson, David J Werring
PURPOSE OF REVIEW: Cerebral microbleeds (CMBs) are a radiological marker of cerebral small vessel disease corresponding to small haemosiderin foci identified by blood-sensitive MRI. CMBs are common in older community populations, and in individuals with ischaemic stroke or transient ischaemic attack (TIA), and intracerebral haemorrhage (ICH). We summarize how CMBs might contribute to assessing the future risk of ischaemic stroke and ICH to inform antithrombotic (antiplatelet or anticoagulant) decisions...
November 24, 2016: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27890830/time-course-of-glial-changes-in-the-hyperhomocysteinemia-model-of-vascular-cognitive-impairment-and-dementia-vcid
#4
Tiffany L Sudduth, Erica M Weekman, Brittani R Price, Jennifer L Gooch, Abigail Woolums, Christopher M Norris, Donna M Wilcock
Vascular cognitive impairment and dementia (VCID) is the second leading cause of dementia behind Alzheimer's disease (AD) and is a frequent co-morbidity with AD. Despite its prevalence, little is known about the molecular mechanisms underlying the cognitive dysfunction resulting from cerebrovascular disease. Astrocytic end-feet almost completely surround intraparenchymal blood vessels in the brain and express a variety of channels and markers indicative of their specialized functions in the maintenance of ionic and osmotic homeostasis and gliovascular signaling...
November 25, 2016: Neuroscience
https://www.readbyqxmd.com/read/27882883/electrospray-ionization-tandem-mass-spectrometric-study-of-protonated-and-alkali-cationized-%C3%AE-%C3%AE%C2%B5-hybrid-peptides-differentiation-of-a-pair-of-dipeptide-positional-isomers
#5
A Ramesh Babu, G Raju, C Purna Chander, B Shoban Babu, R Srinivas, G V M Sharma
A new class of Boc-N-protected hybrid peptides derived from L- Ala and ε(6)-Caa (L-Ala = L-Alanine, Caa = C-linked carboamino acid derived from D-xylose) have been studied by positive ion electrospray ionization (ESI) ion-trap tandem mass spectrometry (MS/MS). MS(n) spectra of protonated and alkali-cationized hybrid peptides produce characteristic fragmentation involving the peptide backbone, the tert-butyloxycarbonyl (Boc) group, and the side chain. The dipeptide positional isomers are differentiated by the collision-induced dissociation (CID) of the protonated and alkali-cationized peptides...
2016: European Journal of Mass Spectrometry
https://www.readbyqxmd.com/read/27878621/clinical-and-functional-results-of-laparoscopic-intersphincteric-resection-for-ultralow-rectal-cancer-is-there-a-distinction-between-the-three-types-of-hand-sewn-colo-anal-anastomosis
#6
Bin Zhang, Ke Zhao, Quanlong Liu, Shuhui Yin, Guangzuan Zhuo, Yujuan Zhao, Jun Zhu, Jianhua Ding
PURPOSE: The purpose of this study is to compare the clinical and functional outcomes of three types of hand-sewn colo-anal anastomosis (CAA) after laparoscopic intersphincteric resection (Lap-ISR) for patients with ultralow rectal cancer. METHODS: A total of 79 consecutive patients treated by Lap-ISR for low-lying rectal cancer in an academic medical center from June 2011 to February 2016. According to the distal tumor margin and individualized anal length, the patients underwent three types of hand-sewn CAA including partial-ISR, subtotal-ISR, and total-ISR...
November 23, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/27871251/epidemiology-and-rapd-pcr-typing-of-thermophilic-campylobacters-from-children-under-five-years-and-chickens-in-morogoro-municipality-tanzania
#7
Idrissa S Chuma, Hezron E Nonga, Robinson H Mdegela, Rudovick R Kazwala
BACKGROUND: Campylobacter species are gram negative and flagellated bacteria under the genus Campylobacter, family Campylobacteriaceae. These pathogens cause zoonotic infections among human and animal populations. This study was undertaken between December 2006 and May 2007 to determine prevalence, risk factors and genetic diversity of thermophilic Campylobacter isolates from children less than 5 years and chickens in Morogoro Municipality, Tanzania. METHODS: The Skirrow's protocol was used for isolation and identification of Campylobacter from 268 human stool specimens and 419 chicken cloacal swabs...
November 21, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27871078/cerebral-microhemorrhages-and-meningeal-siderosis-in-infective-endocarditis
#8
Ajay Malhotra, Joseph Schindler, Brian Mac Grory, Stacy Y Chu, Teddy S Youn, Charles Matouk, David M Greer, Matthew Schrag
OBJECTIVE: Patients with infective endocarditis (IE) frequently experience cerebral insults, and neurological involvement in IE has been reported to herald a worse prognosis. In this manuscript, we describe a distinctive pattern of findings on susceptibility-weighted imaging (SWI) sequences in subjects with IE. METHODS: Patients with IE who underwent SWI MRI at an academic hospital from 2009 to 2014 were retrospectively analyzed. The pattern of findings was compared to SWI findings in groups of subjects with cerebral amyloid angiopathy (CAA) or severe hypertension...
November 22, 2016: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/27869115/cerebral-vascular-amyloid-seeds-drive-amyloid-%C3%AE-protein-fibril-assembly-with-a-distinct-anti-parallel-structure
#9
Feng Xu, Ziao Fu, Sharmila Dass, AnnMarie E Kotarba, Judianne Davis, Steven O Smith, William E Van Nostrand
Cerebrovascular accumulation of amyloid β-protein (Aβ), a condition known as cerebral amyloid angiopathy (CAA), is a common pathological feature of patients with Alzheimer's disease. Familial Aβ mutations, such as Dutch-E22Q and Iowa-D23N, can cause severe cerebrovascular accumulation of amyloid that serves as a potent driver of vascular cognitive impairment and dementia. The distinctive features of vascular amyloid that underlie its unique pathological properties remain unknown. Here, we use transgenic mouse models producing CAA mutants (Tg-SwDI) or overproducing human wild-type Aβ (Tg2576) to demonstrate that CAA-mutant vascular amyloid influences wild-type Aβ deposition in brain...
November 21, 2016: Nature Communications
https://www.readbyqxmd.com/read/27864963/chronic-alcohol-abuse-leads-to-low-bone-mass-with-no-general-loss-of-bone-structure-or-bone-mechanical-strength
#10
Maiken Parm Ulhøi, Karoline Meldgaard, Torben Steiniche, Anders Odgaard, Annie Vesterby
: Chronic alcohol abuse (CAA) has deleterious effects on skeletal health. This study examined the impact of CAA on bone with regard to bone density, structure, and strength. Bone specimens from 42 individuals with CAA and 42 individuals without alcohol abuse were obtained at autopsy. Dual-energy X-ray absorptiometry (DEXA), compression testing, ashing, and bone histomorphometry were performed. Individuals with CAA had significantly lower bone mineral density (BMD) in the femoral neck and significantly lower bone volume demonstrated by thinner trabeculae, decreased extent of osteoid surfaces, and lower mean wall thickness of trabecular osteons compared to individuals without alcohol abuse...
November 16, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27858710/app-mutations-in-cerebral-amyloid-angiopathy-with-or-without-cortical-calcifications-report-of-three-families-and-a%C3%A2-literature-review
#11
François Sellal, David Wallon, Laurent Martinez-Almoyna, Cecilia Marelli, Abhinav Dhar, Héléne Oesterlé, Anne Rovelet-Lecrux, Stéphane Rousseau, Christina E Kourkoulis, Jon Rosand, Zora Y DiPucchio, Matthew Frosch, Claudine Gombert, Bertrand Audoin, Manuéle Mine, Florence Riant, Thierry Frebourg, Didier Hannequin, Dominique Campion, Steven M Greenberg, Elisabeth Tournier-Lasserve, Gaël Nicolas
BACKGROUND: Specific APP mutations cause cerebral amyloid angiopathy (CAA) with or without Alzheimer's disease (AD). OBJECTIVE: We aimed at reporting APP mutations associated with CAA, describe the clinical, cerebrospinal fluid AD biomarkers, and neuroimaging features, and compare them with the data from the literature. METHODS: We performed a retrospective study in two French genetics laboratories by gathering all clinical and neuroimaging data from patients referred for a genetic diagnosis of CAA with an age of onset before 66 years and fulfilling the other Boston revised criteria...
November 14, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27856928/prevalence-of-congenital-coronary-artery-anomalies-as-shown-by-multi-slice-computed-tomography-coronary-angiography-a-single-centre-study-from-turkey
#12
Aybala Tongut, Zeki Özyedek, İsmail Çerezci, Selim Erentürk, Ali Can Hatemi
OBJECTIVE: Coronary artery anomaly (CAA) is a remarkable etiological factor for sudden cardiac death in young adults. The incidence of CAA is unknown, with most reliable data available based on postmortem/angiography investigations. This study aimed to assess the prevalence of different forms of coronary anomalies, and to investigate the relationships between demographic data and occurrence of CAA. METHODS: A total of 2401 consecutive patients (1805 men; mean age, 56 ± 11...
November 17, 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/27853131/rapidly-sequential-and-fatal-hemorrhaging-in-a-case-of-cerebral-amyloid-angiopathy
#13
Zachary B Bulwa, G Carter Ward, Owen Kramer, Birju Rao, Melvin Wichter
BACKGROUND Cerebral amyloid angiopathy (CAA) is an increasingly recognized cause of lobar intracerebral hemorrhage (ICH) and cognitive impairment in the aging population. Magnetic resonance imaging (MRI) of cerebral microbleeds is the most reliable option for clinical diagnosis of suspected CAA. The pathophysiology of microbleeds and ICH in CAA is not well understood, but it is thought to be the result of vessel weakening and rupture secondary to amyloid deposition. Little evidence has been established pertaining to the time course of recurrent CAA-related microbleeds or larger hemorrhages...
November 17, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27836896/reduced-nitric-oxide-bioavailability-mediates-cerebroarterial-dysfunction-independent-of-cerebral-amyloid-angiopathy-in-a-mouse-model-of-alzheimer-s-disease
#14
Mario Merlini, Yi Shi, Stephan Keller, Gianluigi Savarese, Alexander Akhmedov, Rebecca Derungs, Remo Daniel Spescha, Luka Kulic, Roger Nitsch, Thomas Lüscher, Giovanni Camici
In Alzheimer's disease (AD), cerebral arteries, in contrast to cerebral microvessels, show both cerebral amyloid angiopathy- (CAA) dependent and -independent vessel wall pathology. However, it remains unclear whether CAA-independent vessel wall pathology affects arterial function thereby chronically reducing cerebral perfusion, and if so which mechanisms mediate this effect. To this end, we assessed the ex vivo vascular function of the basilar artery and a similar-sized peripheral artery (femoral artery) in the Swedish-Arctic (SweArc) transgenic AD mouse model at different disease stages...
November 11, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27834959/k-ras-oncogene-mutation-in-pterygium
#15
B T Ozturk, M S Yıldırım, A Zamani, B Bozkurt
PurposePterygium is claimed to be a benign proliferation triggered by prolonged exposure to ultraviolet radiation. The frequency of K-ras oncogene mutation, which is among the initial mutations in tumorigenesis, is evaluated in this study.Patients and methodsIn this prospective randomized clinical, trial pterygium tissues and normal conjunctiva tissue specimens are obtained from the superotemporal quadrant of patients who underwent primary pterygium excision with autograft transplantation. DNA extraction from tissues was performed using the QIAamp DNA FFPE tissue kit...
November 11, 2016: Eye
https://www.readbyqxmd.com/read/27832308/mechanism-of-electron-transport-during-thiosulfate-oxidation-in-an-obligately-mixotrophic-bacterium-thiomonas-bhubaneswarensis-strain-s10-dsm-18181-t
#16
Kunwar Digvijay Narayan, Surendra Chandra Sabat, Subrata K Das
This study describes the thiosulfate-supported respiratory electron transport activity of Thiomonas bhubaneswarensis strain S10 (DSM 18181(T)). Whole-genome sequence analysis revealed the presence of complete sox (sulfur oxidation) gene cluster (soxCDYZAXB) including the sulfur oxygenase reductase (SOR), sulfide quinone reductase (SQR), sulfide dehydrogenase (flavocytochrome c (fcc)), thiosulfate dehydrogenase (Tsd), sulfite dehydrogenase (SorAB), and intracellular sulfur oxidation protein (DsrE/DsrF). In addition, genes encoding respiratory electron transport chain components viz...
November 10, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27829169/slc44a2-single-nucleotide-polymorphisms-isoforms-and-expression-association-with-severity-of-meniere-s-disease
#17
Thankam S Nair, Pavan K Kommareddi, Maria M Galano, Danielle M Miller, Bala Naveen Kakaraparthi, Steven A Telian, H Alex Arts, Hussam El-Kashlan, Alyse Kilijanczyk, Amy Anne D Lassig, Martin P Graham, Susan G Fisher, Stefan W Stoll, Rajan P Nair, James T Elder, Thomas E Carey
SLC44A2 was discovered as the target of an antibody that causes hearing loss. Knockout mice develop age related hearing loss, loss of sensory cells and spiral ganglion neurons. SLC44A2 has polymorphic sites implicated in human disease. Transfusion related acute lung injury (TRALI) is linked to rs2288904 and genome wide association studies link rs2288904 and rs9797861 to venous thromboembolism (VTE), coronary artery disease and stroke. Here we report linkage disequilibrium of rs2288904 with rs3087969 and the association of these SLC44A2 SNPs with Meniere's disease severity...
November 6, 2016: Genomics
https://www.readbyqxmd.com/read/27812816/cerebral-amyloid-angiopathy-in-a-young-man-with-a-history-of-traumatic-brain-injury-a-case-report-and-review-of-the-literature
#18
Yoichi Nakayama, Yohei Mineharu, Yoshiki Arawaka, Sei Nishida, Hirofumi Tsuji, Hidehiko Miyake, Maki Yamaguchi, Sachiko Minamiguchi, Yasushi Takagi, Susumu Miyamoto
Cerebral amyloid angiopathy (CAA), a cause of recurrent and multiple lobar hemorrhages, characteristically occurs in persons aged ≥55 years. We report a case of a 32-year-old male who had recurrent hemorrhage in the left multiple lobes, with a history of traumatic brain injury and hematoma evacuation at the age of 1 year. He underwent surgical treatment and was histopathologically diagnosed as having CAA. The literature review yielded six CAA cases, including ours, aged less than 55 years. All were male and four had histories of severe TBI, suggesting that male sex and TBI may be associated with CAA in young persons...
November 4, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27806359/etiologic-and-clinical-characterization-of-patients-with-recurrent-spontaneous-intracerebral-hemorrhage
#19
Marc E Wolf, Angelika Alonso, Anne D Ebert, Kristina Szabo, Anastasios Chatzikonstantinou
BACKGROUND: The impact of recurrent stroke has been extensively addressed with regard to ischemic stroke, revealing potentially different etiologies of recurrent events in the individual patient. In contrast, data on recurrent intracerebral hemorrhage (ICH) are scarce, especially considering etiologic characterization. We aimed to determine the etiology of recurrent ICH at each event to identify potential etiologic changes. PATIENTS AND METHODS: We analyzed the data of patients admitted to our stroke unit with recurrent ICH between 1998 and 2014 with regard to clinical characteristics and etiology...
2016: European Neurology
https://www.readbyqxmd.com/read/27805576/protocol-for-isolating-the-mouse-circle-of-willis
#20
Justine Claire Hur, Régis Blaise, Isabelle Limon
The cerebral arterial circle (circulus arteriosus cerebri) or circle of Willis (CoW) is a circulatory anastomosis surrounding the optic chiasma and hypothalamus that supplies blood to the brain and surrounding structures. It has been implicated in several cerebrovascular disorders, including cerebral amyloid angiopathy (CAA)-associated vasculopathies, intracranial atherosclerosis and intracranial aneurysms. Studies of the molecular mechanisms underlying these diseases for the identification of novel drug targets for their prevention require animal models...
October 22, 2016: Journal of Visualized Experiments: JoVE
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