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https://www.readbyqxmd.com/read/29333568/comparison-of-effects-of-thawing-entire-donor-sperm-vial-vs-partial-thawing-shaving-on-sperm-quality
#1
Micha Baum, Raoul Orvieto, Sapir Kon, Ronit Machtinger, Gil M Yerushalmi, Ariel Hourvitz
PURPOSE: Partial thawing of a vial of cryopreserved sperm (shaving) is sometimes applied as a measure to preserve sperm for further use, particularly in cases of very restricted sperm quantity. However, mechanical violence may disrupt the sperm-wall and lead to impaired in-vitro fertilization (IVF) outcomes. MATERIAL AND METHODS: In a retrospective case-control study at a tertiary, university-affiliated medical center, we compared the IVF/intracytoplasmic sperm injection (ICSI) outcomes of patients who used donor sperm following partial thawing (shaving) of the vial of cryopreserved sperm (n = 99) to a control group consisting of patients for whom the vial of sperm was completely thawed before use (n = 99)...
January 15, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29333041/pharmacological-evaluation-of-hepatoprotective-activity-of-ahpl-aytab-0613-tablet-in-carbon-tetrachloride-ethanol-and-paracetamol-induced-hepatotoxicity-models-in-wistar-albino-rats
#2
Sanjay U Nipanikar, Sohan S Chitlange, Dheeraj Nagore
Background: Hepatotoxicity ultimately leads to liver failure. Conventional treatment options for hepatotoxicity are limited and not safe. Objective: Formulation AHPL/AYTAB/0613 is developed to provide safer and effective hepatoprotective drug of natural origin. A study was conducted to evaluate hepatoprotective activity of AHPL/AYTAB/0613 (three dosages) in comparison with marketed formulations in carbon tetrachloride (CCl4), ethanol, and paracetamol-induced hepatotoxicity in Wistar albino rats...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29331529/effect-of-acids-produced-from-carbohydrate-metabolism-in-cryoprotectants-on-the-viability-of-freeze-dried-lactobacillus-and-prediction-of-optimal-initial-cell-concentration
#3
Shumao Cui, Feng Hang, Xiaoming Liu, Zhiyuan Xu, Zhenmin Liu, Jianxin Zhao, Hao Zhang, Wei Chen
For the industrial production of probiotics powder, various sugars have been used as cryoprotectants to preserve probiotics during freeze-drying. Some of these sugars can be metabolized by Lactobacillus with the production of acids during the mix. In this study, we investigated the effect of acids on ATPase, β-galactosidase, lactate dehydrogenase (LDH), integrity and fluidity of cell membrane and the survival rate of Lactobacillus during freeze-drying. In the presence of Lactobacillus, acids were produced from cryoprotectants containing fermentable sugars before freezing, resulting in a decrease in the pH of the bacterial suspension to below 5...
January 11, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29331341/effects-of-the-gut-liver-axis-on-ischemia-mediated-hepatocellular-carcinoma-recurrence-in-the-mouse-liver
#4
Lorenzo A Orci, Stéphanie Lacotte, Vaihere Delaune, Florence Slits, Graziano Oldani, Vladimir Lazarevic, Carlo Rossetti, Laura Rubbia-Brandt, Philippe Morel, Christian Toso
BACKGROUND & AIMS: There is growing evidence that liver graft ischemia-reperfusion (I/R) is a risk factor for hepatocellular carcinoma (HCC) recurrence, but the involved mechanisms are unclear. Here, we tested the hypothesis that mesenteric congestion due to portal blood flow interruption induces endotoxin-mediated Toll-Like Receptor 4 (Tlr4) engagement, resulting in elevated liver cancer burden. We also assessed the role of remote ischemic preconditioning (RIPC) in this context. METHODS: C57Bl/6j mice were exposed to standardized models of liver I/R injury and RIPC, by occluding hepatic and femoral blood vessels...
January 10, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29330471/slc26a3-dra-prevents-tnf-alpha-induced-barrier-dysfunction-and-dextran-sulfate-sodium-induced-acute-colitis
#5
Xiangming Ding, Dongxiao Li, Mengke Li, Han Wang, Qin He, Yunwu Wang, Hongbing Yu, Dean Tian, Qin Yu
SLC26A3 encodes a Cl-/HCO3- ion transporter that is also known as downregulated in adenoma (DRA) and is involved in HCO3-/mucus formation. The role of DRA in the epithelial barrier has not been previously established. In this study, we investigated the in vivo and in vitro mechanisms of DRA in the colon epithelial barrier. Immunofluorescence (IF) and co-immunoprecipitation (co-IP) studies reveal that DRA binds directly to tight junction (TJ) proteins and affects the expression of TJ proteins in polarized Caco-2BBe cells...
January 12, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29329795/omega-3-fatty-acids-and-adipose-tissue-biology
#6
REVIEW
Ondrej Kuda, Martin Rossmeisl, Jan Kopecky
This review provides evidence for the importance of white and brown adipose tissue (i.e. WAT and BAT) function for the maintenance of healthy metabolic phenotype and its preservation in response to omega-3 polyunsaturated fatty acids (omega-3 PUFA), namely in the context of diseased states linked to aberrant accumulation of body fat, systemic low-grade inflammation, dyslipidemia and insulin resistance. More specifically, the review deals with (i) the concept of immunometabolism, i.e. how adipose-resident immune cells and adipocytes affect each other and define the immune-metabolic interface; and (ii) the characteristic features of "healthy adipocytes" in WAT, which are relatively small fat cells endowed with a high capacity for mitochondrial oxidative phosphorylation, triacylglycerol/fatty acid (TAG/FA) cycling and de novo lipogenesis (DNL)...
January 9, 2018: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29328366/expression-of-dna-damage-response-proteins-in-gastric-cancer-comprehensive-protein-profiling-and-histological-analysis
#7
Hiroki Arai, Ryuichi Wada, Kousuke Ishino, Mitsuhiro Kudo, Eiji Uchida, Zenya Naito
Gastric cancer is the third major cause of cancer-related mortality in Japan. The aim of this study was to identify a factor implicated in the biology of gastric cancer by comprehensive protein profiling. Protein profiling was carried out by liquid chromatography-tandem mass spectrometry, using formalin-fixed paraffin-embedded specimens of 17 gastric cancer cases. Pathway analysis and orthogonal partial least square-discriminant analysis suggested the significant expression of ribonucleoproteins, heterogeneous nuclear ribonucleoproteins, interleukin binding factor 2 (ILF2), KU70 and KU80, which are involved in DNA damage response (DDR)...
January 5, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29327735/acquired-sensorineural-hearing-loss-in-children-current-research-and-therapeutic-perspectives
#8
M Ralli, R Rolesi, R Anzivino, R Turchetta, A R Fetoni
The knowledge of mechanisms responsible for acquired sensorineural hearing loss in children, such as viral and bacterial infections, noise exposure, aminoglycoside and cisplatin ototoxicity, is increasing and progressively changing the clinical management of affected patients. Viral infections are by far the most relevant cause of acquired hearing loss, followed by aminoglycoside and platinum derivative ototoxicity; moreover, cochlear damage induced by noise overexposure, mainly in adolescents, is an emerging topic...
December 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/29326416/strategies-to-restore-adenosine-triphosphate-atp-level-after-more-than-20-hours-of-cold-ischemia-time-in-human-marginal-kidney-grafts
#9
Matteo Ravaioli, Maurizio Baldassare, Francesco Vasuri, Gianandrea Pasquinelli, Maristella Laggetta, Sabrina Valente, Vanessa De Pace, Flavia Neri, Antonio Siniscalchi, Chiara Zanfi, Valentina R Bertuzzo, Paolo Caraceni, Davide Trerè, Pasquale Longobardi, Antonio D Pinna
BACKGROUND The persisting organ shortage in the field of transplantation recommends the use of marginal kidneys which poorly tolerate ischemic damage. Adenosine triphosphate (ATP) depletion during cold ischemia time (CIT) is considered crucial for graft function. We tested different strategies of kidney perfusion before transplantation in the attempt to improve the technique. MATERIAL AND METHODS Twenty human discarded kidneys from donors after brain death and with at least 20 hours of CIT were randomized to the following experimental groups (treatment time three-hours at 4°C): a) static cold storage (CS); b) static cold hyperbaric oxygenation (Hyp); c) hypothermic perfusion (PE); d) hypothermic perfusion in hyperbaric oxygenation (PE-Hyp); and e) hypothermic oxygenated perfusion (PE-O2)...
January 12, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29322853/laser-ablation-of-the-biliary-tree-in-vivo-proof-of-concept-as-potential-treatment-of-unresectable-cholangiocarcinoma
#10
Paola Saccomandi, Giuseppe Quero, Riccardo Gassino, Alfonso Lapergola, Ludovica Guerriero, Michele Diana, Alberto Vallan, Guido Perrone, Emiliano Schena, Guido Costamagna, Jaques Marescaux, Francesco M Di Matteo
OBJECTIVES: The palliative treatment of cholangiocarcinoma is based on stent placement with well-known procedure-related complications. Consequently, alternative energy-based techniques were put forward with controversial long-term results. This study aims to evaluate the safety and effectiveness of biliary tree laser ablation (LA) in terms of: i) absence of perforation, ii) temperature increase, iii) induced thermal damage in in vivo models. MATERIALS AND METHODS: The common bile duct and cystic ducts of two pigs were ablated with a diode laser (circumferential irradiation pattern) for 6 and 3 minutes at 7 W...
January 11, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29322347/all-aspect-of-toxic-effect-of-brilliant-blue-and-sunset-yellow-in-allium-cepa-roots
#11
Kemal Koç, Dilek Pandir
Substances added to food are considerable for survival and are the oldest technologies used in preservation, sweetening and coloring. This work was conducted to evaluate the toxicity of the food additives sunset yellow (SY) and brilliant blue (BB) on Allium cepa root meristematic cells. Control and treatment groups were created from germinated roots. Group 1 (control group) did not receive chemicals. Group 2 (SY or BB-treatment group), received increasing doses of SY (25, 50, 100 and 500 ppm) and BB (100, 200, 400 and 500 ppm) with time periods of 24, 48 and 72 h...
January 10, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29322019/to-identify-or-not-to-identify-parathyroid-glands-during-total-thyroidectomy
#12
REVIEW
Yuk Kwan Chang, Brian H H Lang
Hypoparathyroidism is one of the most common complications after total thyroidectomy and may impose a significant burden to both the patient and clinician. The extent of thyroid resection, surgical techniques, concomitant central neck dissection, parathyroid gland (PG) autotransplantation and inadvertent parathyroidectomy have long been some of the risk factors for postoperative hypoparathyroidism. Although routine identification of PGs has traditionally been advocated by surgeons, recent evidence has suggested that perhaps identifying fewer number of in situ PGs during surgery (i...
December 2017: Gland Surgery
https://www.readbyqxmd.com/read/29320729/corneal-committed-cells-restore-the-stem-cell-pool-and-tissue-boundary-following-injury
#13
Waseem Nasser, Aya Amitai-Lange, Despina Soteriou, Rana Hanna, Beatrice Tiosano, Yaron Fuchs, Ruby Shalom-Feuerstein
During morphogenesis, preserving tissue boundaries is essential for cell fate regulation. While embryonic tissues possess high plasticity and repair ability, the questions of whether and how adult tissues cope with acute stem cell (SC) loss or boundary disruption have remained unanswered. Here, we report that K15-GFP transgene labels the murine corneal epithelial boundary and SC niche known as the limbus. K15-GFP+ basal cells expressed SC markers and were located at the corneal regeneration site, as evident by lineage tracing...
January 9, 2018: Cell Reports
https://www.readbyqxmd.com/read/29318892/transplantation-of-cryopreserved-ovarian-tissue-in-a-patient-affected-by-metastatic-struma-ovarii-and-endometriosis
#14
Raffaella Fabbri, Rossella Vicenti, Roberto Paradisi, Stefania Rossi, Lucia De Meis, Renato Seracchioli, Maria Macciocca
In this case report, the outcomes of cryopreserved ovarian tissue transplantation performed in a patient affected by struma-ovarii associated with mature cystic teratoma, recurrent endometriotic cysts and diffuse peritoneal malignant struma-ovarii implants were described. Before cryopreservation, the patient underwent two left ovarian surgeries for enucleation cysts 8 years after righ salpingo-oophorectomy for struma-ovarii. Ovarian biopsy was collected in another hospital and transported to our laboratory for cryopreservation...
January 10, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29317056/a-potentially-curative-fetal-intervention-for-hypoplastic-left-heart-syndrome
#15
Andrew T Hattam
Hypoplastic left heart syndrome (HLHS) encapsulates a spectrum of complex congenital cardiovascular malformations involving varying degrees of underdevelopment of the left-sided heart structures. However, despite improved survival rates since the introduction of staged surgical reconstruction, treatment options for HLHS remain palliative rather than curative. A major limiting factor in the development of definitive curative therapy for HLHS is an incomplete understanding of its pathogenesis. Currently, the aetiology HLHS is best conceptualised by the 'flow theory' of cardiogenesis, which states that normal cardiac development is reliant on the interrelationship of normal flow patterns of blood through the developing heart, and appropriate growth of the cardiac valves and myocardium...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29317046/retro-peritoneal-cooling-for-kidney-preservation-from-multi-organ-cadaver-donors
#16
Anastasio Salazar-Bañuelos, Mauricio Monroy-Cuadros, Hoover Henriquez-Cooper
BACKGROUND: Minimizing ischemia is paramount in the procurement of kidneys for transplantation. A fast cooling and expeditious removal is ideal to minimize damage from warm ischemia, however, since the removal of kidneys is delayed in cadaver donation until all other organs are harvested, the risk of kidney damage increases due to contact with the warmer soft body tissues. Surgical techniques that expedite organ retrieval were developed to avoid organ damage. METHODS: We test a modification of Thomas Starzl's improved technique for multi-organ harvesting by interposing an ice bag between the posterior aspect of the kidney and the psoas muscle in a randomized trial with 21 multi-organ cadaver donors...
January 4, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29315121/cervical-total-disk-arthroplasty
#17
Timothy T Roberts, Ryan J Filler, Jason W Savage, Edward C Benzel
In the United States, cervical total disk arthroplasty (TDA) is US Federal Drug Administration (FDA) approved for use in both 1 and 2-level constructions for cervical disk disease resulting in myelopathy and/or radiculopathy. TDA designs vary in form, function, material composition, and even performance in vivo. However, the therapeutic goals are the same: to remove the painful degenerative/damaged elements of the intervertebral discoligamenous joint complex, to preserve or restore the natural range of spinal motion, and to mitigate stresses on adjacent spinal segments, thereby theoretically limiting adjacent segment disease (ASDis)...
January 8, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29311619/in-situ-immune-response-and-mechanisms-of-cell-damage-in-central-nervous-system-of-fatal-cases-microcephaly-by-zika-virus
#18
Raimunda S S Azevedo, Jorge R de Sousa, Marialva T F Araujo, Arnaldo J Martins Filho, Bianca N de Alcantara, Fernanda M C Araujo, Maria G L Queiroz, Ana C R Cruz, Beatriz H Baldez Vasconcelos, Jannifer O Chiang, Lívia C Martins, Livia M N Casseb, Eliana V da Silva, Valéria L Carvalho, Barbara C Baldez Vasconcelos, Sueli G Rodrigues, Consuelo S Oliveira, Juarez A S Quaresma, Pedro F C Vasconcelos
Zika virus (ZIKV) has recently caused a pandemic disease, and many cases of ZIKV infection in pregnant women resulted in abortion, stillbirth, deaths and congenital defects including microcephaly, which now has been proposed as ZIKV congenital syndrome. This study aimed to investigate the in situ immune response profile and mechanisms of neuronal cell damage in fatal Zika microcephaly cases. Brain tissue samples were collected from 15 cases, including 10 microcephalic ZIKV-positive neonates with fatal outcome and five neonatal control flavivirus-negative neonates that died due to other causes, but with preserved central nervous system (CNS) architecture...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311561/inhibition-of-rgma-alleviates-symptoms-in-a-rat-model-of-neuromyelitis-optica
#19
Kana Harada, Yuki Fujita, Tatsusada Okuno, Shogo Tanabe, Yoshihisa Koyama, Hideki Mochizuki, Toshihide Yamashita
Neuromyelitis optica (NMO) is an autoimmune disease associated with NMO immunoglobulin G (NMO-IgG), an antibody that selectively binds to the aquaporin-4. Here, we established a localized NMO model by injecting NMO-IgG into the spinal cord, and assessed the efficacy of treating its NMO-like symptoms by blocking repulsive guidance molecule-a (RGMa), an axon growth inhibitor. The model showed pathological features consistent with NMO. Systemic administration of humanized monoclonal anti-RGMa antibody delayed the onset and attenuated the severity of clinical symptoms...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311503/a-rat-model-of-knee-osteoarthritis-suitable-for-electroacupuncture-study
#20
Yongyuan Ma, Haiyun Guo, Fuhai Bai, Ming Zhang, Liu Yang, Jiao Deng, Lize Xiong
Acupuncture is widely used for knee osteoarthritis (KOA) treatment in clinical practice. In the present study, we aimed to set a standard KOA animal model for electroacupuncture (EA) study and provide an acupuncture recipe for further KOA studies. Rats intra-articularly administered monosodium iodoacetate (MIA, 0.3, 1 or 3 mg respectively, n=12 each) were evaluated for pain-like behavior: paw withdrawal mechanical threshold, weight bearing deficit, and joint pathological changes (OARSI score) until 28 days after injury...
January 1, 2018: Experimental Animals
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