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https://www.readbyqxmd.com/read/28428286/a-genetic-analysis-of-the-caenorhabditis-elegans-detoxification-response
#1
Tetsunari Fukushige, Harold E Smith, Johji Miwa, Michael W Krause, John A Hanover
Oxidative damage contributes to human diseases of aging including diabetes, cancer, and cardiovascular disorders. Reactive oxygen species resulting from xenobiotic and endogenous metabolites are sensed by a poorly understood process, triggering a cascade of regulatory factors and leading to the activation of the transcription factor Nrf2 (SKN-1 in Caenorhabditis elegans). Nrf2/SKN-1 activation promotes the induction of the Phase II detoxification system that serves to limit oxidative stress. We have extended a previous C...
April 19, 2017: Genetics
https://www.readbyqxmd.com/read/28416376/seminal-plasma-removal-by-density-gradient-centrifugation-is-superior-for-goat-sperm-preservation-compared-with-classical-sperm-washing
#2
J Santiago-Moreno, M C Esteso, C Castaño, A Toledano-Díaz, J A Delgadillo, A López-Sebastián
Seminal plasma removal is routine in goat sperm cryopreservation protocols. The classical washing procedure designed to accomplish this usually leaves the pellet resulting from use of this procedure contaminated with dead sperm, debris, and cells other than sperm. This contamination negatively affects viability of sperm after cryopreservation. The present research was conducted to compare the effect on chilled and frozen-thawed goat sperm of the classical washing method to that of a selective washing method involving density gradient centrifugation (DGC)...
April 9, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28280973/determinants-of-curvature-constant-w-of-the-power-duration-relationship-under-normoxia-and-hypoxia-the-effect-of-pre-exercise-alkalosis
#3
Sanjoy K Deb, Lewis A Gough, S Andy Sparks, Lars R McNaughton
PURPOSE: This study investigated the effect of induced alkalosis on the curvature constant (W') of the power-duration relationship under normoxic and hypoxic conditions. METHODS: Eleven trained cyclists (mean ± SD) Age: 32 ± 7.2 years; body mass (bm): 77.0 ± 9.2 kg; VO2peak: 59.2 ± 6.8 ml·kg(-1)·min(-1) completed seven laboratory visits which involved the determination of individual time to peak alkalosis following sodium bicarbonate (NaHCO3) ingestion, an environment specific ramp test (e...
March 9, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28280835/ring-opening-of-cyclic-ethers-by-aluminum-hydridotriphenylborate
#4
Debabrata Mukherjee, Hassan Osseili, Khai-Nghi Truong, Thomas P Spaniol, Jun Okuda
Molecular aluminum hydride [(L)AlH2] (L = Me3TACD) reacted with 2 equiv. of BPh3 in THF or THP to give the cationic alkoxides [(L)Al(OR)][HBPh3] (R = nBu, nPent) by facile ring-opening of the cyclic ethers. The Cα-O bond cleavage which involves the isolable intermediate [(L)AlH][HBPh3] is a result of hydride transfer to Cα from [HBPh3](-).
March 10, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28215454/sperm-quality-and-oxidative-status-as-affected-by-homogenization-of-liquid-stored-boar-semen-diluted-in-short-and-long-term-extenders
#5
Mariana B Menegat, Ana Paula G Mellagi, Rafael C Bortolin, Tila A Menezes, Amanda R Vargas, Mari Lourdes Bernardi, Ivo Wentz, Daniel P Gelain, José Cláudio F Moreira, Fernando P Bortolozzo
Homogenization of diluted boar semen during storage has for a long time been regarded as beneficial. Recent studies indicated an adverse effect of homogenization on sperm quality for yet unknown reasons. This study aimed to verify the effect of homogenization on sperm parameters and to elucidate the impact of oxidative stress. Twenty-one normospermic ejaculates (21 boars) were diluted with Androstar(®) Plus (AND) and Beltsville Thawing Solution (BTS). Semen doses were submitted to no-homogenization (NoHom) or twice-a-day manual homogenization (2xHom) during storage at 17°C for 168h...
April 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28040460/kimura-s-disease-in-a-50-year-old-tunisian-man
#6
M Drouillard, M Steve, T Ranoarivony, J-B Souraud
INTRODUCTION: Kimura's disease is an uncommon disease of unknown aetiology affecting men in their thirties from Southeast Asia. The authors report a case of Kimura's disease in a 50-year-old Tunisian man that was diagnosed after surgery. CASE REPORT: This patient had two 2-cm diameter chronic nodular lesions over the right mandible with no local inflammation and no other clinical findings of systemic disease. Histopathological examination showed germinal centre hyperplasia, eosinophilic micro-abscesses and hyperplasia of postcapillary venules, suggestive of Kimura's disease, which was confirmed by the laboratory work-up: elevated total IgE (519g/L), and eosinophilia (580/mm(3))...
December 28, 2016: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28035701/three-unusual-histopathological-presentations-of-angiolymphoid-hyperplasia-with-eosinophilia
#7
Angel Fernandez-Flores, David S Cassarino
Angiolymphoid hyperplasia with eosinophilia (ALHE) is a poorly understood benign vasculoproliferative disorder. Histopathologically, the lesions are composed of a dermal or subcutaneous proliferation of blood vessels of varying sizes with plump and bland endothelial cells, which often show vacuolization and protrusion of the cytoplasm into the lumen. The vascular proliferation is admixed with a diffuse inflammatory infiltrate composed of lymphocytes, eosinophils and mast cells. Lymphoid follicles with germinal centers can sometimes be seen...
March 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28012719/cysteamine-supplementation-revealed-detrimental-effect-on-cryosurvival-of-buffalo-sperm-based-on-computer-assisted-semen-analysis-and-oxidative-parameters
#8
Dheer Singh Swami, Pradeep Kumar, R K Malik, Monika Saini, Dharmendra Kumar, M H Jan
The aim of this study was to investigate the effect of addition of cysteamine to the semen extender on post-thaw semen quality. A total of 30 ejaculates were collected from six bulls. Each ejaculate was divided into five equal parts and diluted to final concentration of 80 million sperms/mL using Optixcell(®)(IMV, France) semen extender supplemented with different concentrations of cysteamine (0, 0.75, 1.25, 2.5 and 5mM) and cryopreserved. In the frozen-thawed samples, the VAP, VSL, VCL ALH and sperm motility of control samples was greater (P<0...
February 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/27936312/synthesis-characterization-and-computational-analysis-of-the-dialanate-dianion-h3-al-alh3-2-a-valence-isoelectronic-analogue-of-ethane
#9
Simon J Bonyhady, Nicole Holzmann, Gernot Frenking, Andreas Stasch, Cameron Jones
The first example of a well-defined binary, low-oxidation-state aluminum hydride species that is stable at ambient temperature, namely the dianion in [{((Dep) Nacnac)Mg}2 (μ-H)]2 [H3 Al-AlH3 ] ((Dep) Nacnac=[(DepNCMe)2 CH](-) , Dep=2,6-diethylphenyl), has been prepared via a magnesium(I) reduction of the alanate complex, ((Dep) Nacnac)Mg(μ-H)3 AlH(NEt3 ). An X-ray crystallographic analysis has shown the compound to be a contact ion complex, which computational studies have revealed to be the source of the stability of the aluminum(II) dianion...
December 9, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27895910/proteomic-identification-of-cryostress-in-epididymal-spermatozoa
#10
Sung Jae Yoon, Md Saidur Rahman, Woo Sung Kwon, Do Yeal Ryu, Yoo Jin Park, Myung Geol Pang
BACKGROUND: Cryopreservation of epididymal spermatozoa is important in cases in which it is not possible to collect semen using normal methods, as the sudden death of an animal or a catastrophic injury. However, the freezing and thawing processes cause stress to spermatozoa, including cold shock, osmotic damage, and ice crystal formation, thereby reducing sperm quality. We assessed the motility (%), motion kinematics, capacitation status, and viability of spermatozoa using computer-assisted sperm analysis and Hoechst 33258/chlortetracycline fluorescence staining...
2016: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/27887759/implementing-an-open-access-casa-software-for-the-assessment-of-stallion-sperm-motility-relationship-with-other-sperm-quality-parameters
#11
Elisa Giaretta, Mauro Munerato, Marc Yeste, Giovanna Galeati, Marcella Spinaci, Carlo Tamanini, Gaetano Mari, Diego Bucci
Setting an open-access computer assisted sperm analysis (CASA) may benefit the evaluation of motility in mammalian sperm, especially when economic constraints do not allow the use of a commercial system. There have been successful attempts to develop such a device in Zebra fish sperm and the system has been used in very few studies on mammalian spermatozoa. Against this background, the present study aimed at developing an open-access CASA system for mammalian sperm using the horse as a model and based upon the Image J software previously established for Zebra fish sperm...
January 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/27832842/flat-epithelial-atypia-on-core-needle-biopsy-must-we-surgically-excise
#12
A A Acott, A T Mancino
Breast flat epithelial atypia (FEA) often coexists with more aggressive pathology and excision is currently recommended when diagnosed by core needle biopsy (CNB). Recent studies suggest isolated FEA has a low association with carcinoma and may warrant close surveillance. A radiology database containing 2189 breast CNB was reviewed for isolated FEA or FEA in combination with atypical pathology. 79 patients had FEA. There were 48/79 with isolated FEA and 31/79 concomitant FEA with ADH, ALH, or LCIS. 46 subsequent excisional biopsies of isolated FEA resulted: benign 38/46, ADH 5/46, LCIS 2/46, DCIS 1/46...
December 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27773974/pparg-lyplal1-multi-allelic-combination-associated-with-obesity-and-overweight-in-mexican-adolescent-females
#13
Esther Alhelí Hernández-Tobías, Luisa Torres-Sánchez, Gino Noris, Carla Santana, María Reyna Samano, José Arellano-Galindo, María de la Luz Arenas-Sordo, Daniel Brooks, Ana Lilia Rodríguez-Ventura, Marco Antonio Meraz-Ríos, Rocío Gómez
OBJECTIVE: We studied multi-loci variants to identify the contribution of six candidate genes (ADIPOQ, CDH13, LYPLAL1, MC4R, PPARG and PGC1A) in the development of obesity and overweight. DESIGN: We genotyped 404 chromosomes with eleven SNPs in Mexican female adolescents, who were subdivided into two groups (obesity-overweight and normal-weight) using the World Health Organization parameters. Genomic (800 chromosomes) and ancestral (208 chromosomes) controls were included to reduce the population bias...
October 20, 2016: Ethnicity & Disease
https://www.readbyqxmd.com/read/27718416/when-pathological-and-radiological-correlation-is-achieved-excision-of-fibroadenoma-with-lobular-neoplasia-on-core-biopsy-is-not-warranted
#14
C Fives, C J O'Neill, R Murphy, M A Corrigan, M J O'Sullivan, L Feeley, M W Bennett, F O'Connell, T J Browne
BACKGROUND: The diagnosis and management of lobular neoplasia (LN) including lobular carcinoma in situ (LCIS) and atypical lobular hyperplasia (ALH) remains controversial. Current management options after a core needle biopsy (CNB) with lobular neoplasia (LN) incorporating both ALH and LCIS include excision biopsy or careful clinical and radiologic follow up. METHODS: A retrospective analysis of the surgical database at Cork University Hospital was performed to identify all core needle biopsies from January 1st 2010 to 31st December 2013 with a diagnosis of FA who subsequently underwent surgical excision biopsy...
December 2016: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/27681693/pathologic-high-risk-lesions-diagnosis-and-management
#15
Melissa Murray
Percutaneous imaging-guided core needle biopsy (CNB) is a less invasive and less expensive alternative to surgical biopsy for the evaluation of breast lesions. After a CNB the radiologist determine if there is concordance between the pathology, imaging, and clinical findings. Patient management after CNB diagnosis of high-risk breast lesion varies. Surgical excision is warranted for lesions yielding a CNB diagnosis of ADH; however controversy exists regarding the need for surgical excision after CNB diagnosis of radial scar, papillary lesion, atypical lobular hyperplasia (ALH), or lobular carcinoma in situ (LCIS)...
December 2016: Clinical Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27667130/breed-differences-of-bull-frozen-thawed-semen
#16
A Ntemka, G Tsousis, C Brozos, E Kiossis, C M Boscos, I A Tsakmakidis
The objective of this study was to investigate the quality of frozen-thawed semen from different bull breeds. Commercial frozen-thawed bull semen samples (26 per breed, 130 totally) of five breeds (Holstein [Η], Brown Swiss [BS], Limousin [L], Belgian Blue [BB], Blonde d' Aquitaine [BA]) were used. After thawing, each semen sample was subjected to thermal resistance test (TR) for 0.5 and 1 hr at 38°C and hypo-osmotic swelling test (HOST) for 1 hr at 150 mOsm at 37°C. Additionally, all samples were evaluated at times 0 hr (thawing), 0...
December 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27624985/morphometric-and-kinematic-sperm-subpopulations-in-split-ejaculates-of-normozoospermic-men
#17
Pilar Santolaria, Carles Soler, Pilar Recreo, Teresa Carretero, Araceli Bono, José M Berné, Jesús L Yániz
This study was designed to analyze the sperm kinematic and morphometric subpopulations in the different fractions of the ejaculate in normozoospermic men. Ejaculates from eight normozoospermic men were collected by masturbation in three fractions after 3-5 days of sexual abstinence. Analyses of sperm motility by computer-assisted sperm analysis (CASA-Mot), and of sperm morphometry by computer-assisted sperm morphometry analysis (CASA-Morph) using fluorescence were performed. Clustering and discriminant procedures were performed to identify sperm subpopulations in the kinematic and morphometric data obtained...
November 2016: Asian Journal of Andrology
https://www.readbyqxmd.com/read/27586272/spermine-reduces-reactive-oxygen-species-levels-and-decreases-cryocapacitation-in-canine-sperm-cryopreservation
#18
Erif Maha Nugraha Setyawan, Min Jung Kim, Hyun Ju Oh, Geon A Kim, Young Kwang Jo, Seok Hee Lee, Yoo Bin Choi, Byeong Chun Lee
The objective of this study was to determine the ability of spermine to act as an antioxidant in scavenging reactive oxygen species (ROS), maintaining sperm function and decreasing cryocapacitation after cryopreservation. Although motility did not increase with spermine treatment, values for membrane integrity were significantly increased (P < 0.05). Higher percentages of linearity and straightness with a lower amplitude of lateral head displacement (ALH) indicated that spermine inhibits hyperactivation...
October 28, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27571142/aluminum-monohydride-catalyzed-selective-hydroboration-of-carbonyl-compounds
#19
Vineet Kumar Jakhar, Milan Kr Barman, Sharanappa Nembenna
The well-defined aluminum monohydride compound [{(2,4,6-Me3-C6H2)NC(Me)}2(Me)(H)]AlH·(NMe2Et) (1) catalyzes hydroboration of a wide range of aldehydes and ketones under mild reaction conditions. Moreover, compound 1 displayed chemoselective hydroboration of aldehydes over ketones at rt.
September 16, 2016: Organic Letters
https://www.readbyqxmd.com/read/27532153/core-breast-biopsies-showing-lobular-carcinoma-in-situ-should-be-excised-and-surveillance-is-reasonable-for-atypical-lobular-hyperplasia
#20
Lauren Q Chang Sen, Wendie A Berg, Regina J Hooley, Gloria J Carter, Mohamed M Desouki, Jules H Sumkin
OBJECTIVE: The purpose of this article is to determine the upgrade rate to ductal carcinoma in situ (DCIS) or invasive carcinoma at excision at the same site after percutaneous breast biopsy findings of atypical lobular hyperplasia (ALH) or lobular carcinoma in situ (LCIS) using current imaging and strict pathologic criteria. MATERIALS AND METHODS: From January 2006 through September 2013, 32,960 breast core biopsies were performed; 1084 (3.3%) core biopsies found ALH or classic LCIS...
November 2016: AJR. American Journal of Roentgenology
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