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https://www.readbyqxmd.com/read/28528367/evaluating-the-role-of-autologous-mesenchymal-stem-cell-seeded-on-decellularized-pericardium-in-the-treatment-of-myocardial-infarction-an-animal-study
#1
Abdol-Mohammad Kajbafzadeh, Seyed Hossein Ahmadi Tafti, Reza Khorramirouz, Shabnam Sabetkish, Seyedeh Maryam Kameli, Saghar Orangian, Shahram Rabbani, Nasim Oveisi, Marziyeh Golmohammadi, Zeynab Kashani
Inappropriate left ventricular remodeling following myocardial infarction (MI) can result in subsequent severe dysfunction. In this study, we tested the hypothesis that decellularized pericardium (DP) or seeded pericardial patch with autologous adipose-derived mesenchymal stem cells (ADMSCs) could be safely used in a MI scar and could improve heart function. Twelve rabbits were randomly divided into three equal groups. Four weeks after MI induction by ligation of the left anterior descending artery in 12 rabbits, animals of G1 (n = 4) received DP patch with labeled ADMSCs...
May 20, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28528301/selective-laser-sintering-scaffold-with-hierarchical-architecture-and-gradient-composition-for-osteochondral-repair-in-rabbits
#2
Yingying Du, Haoming Liu, Qin Yang, Shuai Wang, Jianglin Wang, Jun Ma, Insup Noh, Antonios G Mikos, Shengmin Zhang
Osteochondral defects cannot be adequately self-repaired due to the presence of the sophisticated hierarchical structure and the lack of blood supply in cartilage. Thus, one of the major challenges remaining in this field is the structural design of a biomimetic scaffold that satisfies the specific requirements for osteochondral repair. To address this hurdle, a bio-inspired multilayer osteochondral scaffold that consisted of the poly(ε-caprolactone) (PCL) and the hydroxyapatite (HA)/PCL microspheres, was constructed via selective laser sintering (SLS) technique...
May 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28526964/characterization-of-a-new-isolate-of-pepper-chlorotic-spot-virus-from-yunnan-province-china
#3
Kuanyu Zheng, Tsung-Chi Chen, Shyi-Dong Yeh, Md Siddiqur Rahman, Xiaoxia Su, Kuo Wu, Ting Li, Zhongkai Zhang, Jiahong Dong
A new isolate, 14YV733, of pepper chlorotic spot virus (PCSV) from chili peppers in Yunnan province of China was identified. The typical tospoviral particles of 80-120 nm in diameter were observed by electron microscopy. The virus caused systemic symptoms in several solanaceous plants and the Brassica rapa L. Chinensis group with mechanical inoculation. The sap from infected leaves reacted positively to a rabbit antibody to the N protein of watermelon silver mottle virus (WSMoV) in immunoblotting. The S, M, and L RNAs of PCSV-14YV733 are 3310 nts, 4711 nts, and 8913 nts long, respectively...
May 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28526884/combined-use-of-metformin-and-atorvastatin-attenuates-atherosclerosis-in-rabbits-fed-a-high-cholesterol-diet
#4
Fei Luo, Yuan Guo, Gui-Yun Ruan, Jun-Ke Long, Xi-Long Zheng, Qin Xia, Shui-Ping Zhao, Dao-Quan Peng, Zhen-Fei Fang, Xiang-Ping Li
Statins are widely used to reduce cardiovascular risk. Unfortunately, some patients still experience cardiovascular events though prescribed with high-intensity statins. Metformin, an anti-diabetic drug, was reported to possess anti-atherosclerotic effects. Therefore, the experiments were designed to evaluate whether combined use of metformin and atorvastatin can achieve additional benefits. In rabbits fed a high-cholesterol diet, we evaluated the effects of the combination therapy on atherosclerotic plaques, lipid profiles, blood glucose levels, liver and kidney functions...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526651/disruption-of-nnat-nap1l5-and-mkrn3-dna-methylation-and-transcription-in-rabbit-parthenogenetic-fetuses
#5
Dongxu Wang, Zhiquan Liu, Haobin Yao, Yang Hao, Lina Zhou, Jian Du, Yixin Zhu, Yuxin Xu, Guodong Wang, Yuning Song, Zhanjun Li
Parthenogenetically activated oocytes cannot develop to term in mammals due to lack of paternal gene expression. Disruption of imprinted gene expression and DNA methylation status in parthenogenetic fetuses has been reported in mice and pigs, but not in rabbits. In this study, the genomic imprinting status of the paternally expressed genes Neuronatin (NNAT), Nucleosome assembly protein 1-like 5 (NAP1L5), and Makorin ring finger protein 3 (MKRN3) was compared between rabbit parthenogenetic (PA) and normally fertilized fetuses (Con) using quantitative real-time PCR (qRT-PCR) and bisulfite sequencing PCR (BSP)...
May 16, 2017: Gene
https://www.readbyqxmd.com/read/28526350/designing-novel-bioconjugates-of-hydroxyethylcellulose-and-salicylates-for-potential-pharmaceutical-and-pharmacological-applications
#6
Khawar Abbas, Muhammad Amin, Muhammad Ajaz Hussain, Muhammad Sher, Syed Nasir Abbas Bukhari, Ibrahim Jantan, Kevin J Edgar
The present study deals with fabrication of macromolecular prodrugs (MPDs) of salicylic acid (SA) and aspirin (ASP) based on a hydrophilic cellulose ether, hydroxyethylcellulose (HEC). Degrees of substitution (DS) of SA and ASP per HEC repeating unit (HEC-RU) were achieved ranging from 0.60-2.18 and 0.53-1.50, respectively. The amphiphilic HEC-SA conjugate 2 assembled into nanowire-like structures, while HEC-ASP conjugate 6 formed nanoparticles (diameter 300-700nm) at a water/DMSO interface. After oral administration in rabbit models, conjugates 2 and 6 showed plasma half-life of 6...
May 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28525672/testing-of-a-novel-percutaneous-temporary-aortic-valve-in-a-rabbit-model-of-acute-severe-aortic-regurgitation-an-experimental-study
#7
Paul C Ho
PURPOSE: Device management of hemodynamic instability due to acute aortic regurgitation is not available. A novel, catheter-based, temporary aortic valve (TAV) has been in development. Early prototypes (balloon-based TAV) have undergone proof-of-concept studies in mathematical, bench and animal models. The redesigned membrane-based TAV prototype is evaluated in a rabbit model of acute severe aortic regurgitation. METHODS: Acute aortic regurgitation was simulated by deploying a self-expanding endovascular stent across the aortic annulus...
May 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28525618/establishing-expanding-and-certifying-a-closed-colony-of-phlebotomus-argentipes-diptera-psychodidae-for-xenodiagnostic-studies-at-the-kala-azar-medical-research-center-muzaffarpur-bihar-india
#8
Puja Tiwary, Shakti Kumar Singh, Anurag Kumar Kushwaha, Edgar Rowton, David Sacks, Om Prakash Singh, Shyam Sundar, Phillip Lawyer
This pilot project was preliminary and essential to a larger effort to define the ability of certain human-subject groups across the infection spectrum to serve as reservoirs of Leishmania donovani infection to sand flies in areas of anthroponotic transmission such as in Bihar state, India. This is possible only via xenodiagnosis of well-defined subject groups using live vector sand flies. The objective was to establish at the Kala Azar Medical Research Center (KAMRC), Muzaffarpur, Bihar, India, a self-sustaining colony of Phlebotomus argentipes (Annandale & Brunneti), closed to infusion with wild-caught material and certified safe for human xenodiagnosis...
May 19, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28525525/morphological-observation-on-critical-sized-cranial-defect-repaired-by-icariin-and-autologous-concentrate-growth-factors-in-rabbits
#9
Gang Li, Jie Wang, Guiyun Ren, Fuliang Hao, Yanning Zhang, Peikai Shi, Xiao Liu, Fusheng Dong
BACKGROUND Morphological changes repaired by icariin and autologous concentrate growth factors (ACGF) in critical-sized cranial defect were observed and their promoting effects were investigated. MATERIAL AND METHODS Seventy-two New Zealand white rabbits weighing 1.8~2.0kg were used to build a critical-sized cranial defect model and were randomly divided into 3 groups. X-ray, HE staining, general and histological observation, and immunohistochemistry were used to describe the changes caused by normal saline, icariin, and ACGF...
May 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28525323/values-of-apoptosis-of-lymphocytes-and-granulocytes-in-peripheral-blood-of-polish-mixed-breed-rabbits-in-the-annual-cycle
#10
B Tokarz-Deptuła, B Hukowska-Szematowicz, P Niedźwiedzka-Rystwej, A Trzeciak-Ryczek, W Deptuła
The objective of the study was to determine values of apoptosis for peripheral blood lymphocytes and granulocytes, including dependency on the season of the year, in Polish mixed-breed rabbits and in mixed-breed rabbits with the addition of blood of meat-breed rabbits. The study was carried out in four seasons of the year (spring, summer, autumn, winter) involving 120 Polish mixed-breed rabbits - group I, and 120 Polish mixed-breed rabbits with addition of meat-breed rabbit blood - group II. Assessment of apoptosis of lymphocytes and granulocytes was performed using as FACScan cytometer by Becton Dickinson with FACSDiva software (USA), using as ApoFluor® Green Caspase reagent kit (MP Biomedicals, USA) to detect the activity of the total caspase pool 1, 3, 4, 5, 6, 7, 8, 9 in granulocytes and lymphocytes of rabbit peripheral blood...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28524833/promoting-vasa-vasorum-neovascularization-of-vein-grafts-extenuates-hypoxia-of-the-wall-and-its-subsequent-influence-on-intimal-hyperplasia
#11
Rong-Jiang Zou, Zheng-Hua Wang, Chen-Xi Wang, Song Xue
BACKGROUND: The autologous saphenous vein is the most common conduit for coronary artery bypass grafting, but the vein graft disease will occur. This study used Matrigel basement membrane matrix with many different growth factors to promote vasa vasorum neovascularization and extenuate the hypoxia to improve remodeling. METHODS: This study observed the hypoxia and thickness of the vein grafts at different times. Normal veins and vein grafts with 15 min of ischemia one day postoperatively were harvested in the neck of rabbits...
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28524120/proton-magnetic-resonance-spectroscopy-%C3%A2-h-mrs-study-of-early-traumatic-brain-injury-in-rabbits
#12
Yong Xiao, Yigang Fu, Yi Zhou, Jianguo Xia, Lina Wang, Chunhong Hu
BACKGROUND The aim of this study was to investigate the relationship between dynamic changes of cerebral metabolism and degree of trauma in rabbit models of traumatic brain injury (TBI) by using proton magnetic resonance spectroscopy (¹H-MRS). MATERIAL AND METHODS Thirty-five Chinese rabbits were randomly divided into control, mild, moderate, and severe TBI groups. ¹H-MRS was performed 1, 6, and 24 h after trauma. The concentrations of NAA, Cr, Cho, and Lac, and NAA/Cr and Cho/Cr ratios in each group, were estimated...
May 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28524028/-efficacy-of-20-albumin-infusion-on-coagulation-and-pulmonary-fibrosis-in-rabbits-with-ards
#13
Ling Yao, Bo Liu, Feng Shen
OBJECTIVE: To observe the efficacy of 20% albumin infusion on coagulation and pulmonary fibrosis in rabbits with acute respiratory distress syndrome (ARDS) induced by two-hit of intravenous infusion of oleid acid (OA) and lipopolysaccharide (LPS). METHODS: Forty healthy adult male rabbits were randomly divided into five groups, namely sham group, model group, albumin group (20% albumin), saline group (0.9% sodium chloride injection) and Ringer group (lactate Ringer solution), with 8 rabbits in each group...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28523522/vaccinia-virus-g1-protein-absence-of-autocatalytic-self-processing
#14
F G G Leite, A Bergthaler, T Skern
Vaccinia virus relies on a series of proteolytic cleavage events involving two viral proteins, I7 and G1, to complete its life cycle. Furthermore, G1 itself is cleaved during vaccinia virus infection. However, convincing evidence is lacking to show whether G1 participates in autoproteolysis or is a substrate of another protease. We employed both biochemical and cell-based approaches to investigate G1 cleavage. G1, when expressed in bacteria, rabbit reticulocyte lysates or HeLa cells, was not processed. Moreover, G1 was cleaved in infected cells, but only in the presence of virus late gene expression; cleavage was strongly inhibited by proteasome inhibitors...
May 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28523151/ards-onset-time-and-prognosis-is-it-a-turtle-and-rabbit-race
#15
EDITORIAL
Davide Chiumello, Antonella Marino
No abstract text is available yet for this article.
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28522813/in-situ-assembly-of-ag-nanoparticles-agnps-on-porous-silkworm-cocoon-based-would-film-enhanced-antimicrobial-and-wound-healing-activity
#16
Kun Yu, Fei Lu, Qing Li, Honglei Chen, Bitao Lu, Jiawei Liu, Zhiquan Li, Fangying Dai, Dayang Wu, Guangqian Lan
Preventing wound infection and retaining an appropriate level of moisture around wounds represent the most critical issues in wound treatment. Towards these ends, special focus has been placed on Bombyx mori cocoons because the protective function of the silkworm cocoon resembles the manner in which the skin protects the human body. We have designed a facile technique to develop a novel silkworm cocoon-based wound film (SCWF) wound dressing utilizing a CaCl2-ethanol-H2O solution. To improve the anti-bacterial performance of SCWF, we have incorporated the ability of silk sericin to act as a reducing agent for the conversion of Ag(+) to Ag, yielding nanoparticles (AgNPs) linked together by peptide bonds of silkworm cocoon wound film (SCWF-AgNPs)...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522677/synergistic-effect-of-dofetilide-and-mexiletine-on-prevention-of-atrial-fibrillation
#17
Guizhi Liu, Xiaolin Xue, Chuanyu Gao, Jiaqi Huang, Datun Qi, Yanzhou Zhang, Jian-Zeng Dong, Chang-Sheng Ma, Gan-Xin Yan
BACKGROUND: Although atrial fibrillation (AF) is the most common abnormal heart rhythm and its prevalence continues to rise, there is a marked paucity of effective and safe antiarrhythmic drugs for AF. This study was done to test whether combined use of dofetilide and mexiletine exhibits not only a synergistic effect on AF suppression but also a safer profile in drug-induced ventricular proarrhythmias. METHODS AND RESULTS: The effects of dofetilide plus mexiletine on atrial effective refractory period (ERP), AF inducibility, QT, and QT-related ventricular arrhythmias were studied using the isolated arterially perfused rabbit atrial and ventricular wedge preparations...
May 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28520799/nonenzymatic-glycosylation-of-human-serum-albumin-and-its-effect-on-antibodies-profile-in-patients-with-diabetes-mellitus
#18
Alok Raghav, Jamal Ahmad, Khursheed Alam
BACKGROUND: Albumin glycation and subsequent formation of advanced glycation end products (AGEs) correlate with diabetes and associated complications. METHODS: Human Serum Albumin (HSA) was modified with D-glucose for a 40 day period under sterile conditions at 37°C. Modified samples along with native HSA (unmodified) were analyzed for structural modifications by UV and fluorescence, FTIR, Liquid chromatography mass spectrometry (LCMS) and X-ray crystallography...
2017: PloS One
https://www.readbyqxmd.com/read/28520463/a-preclinical-assessment-of-early-continuous-passive-motion-and-treadmill-therapeutic-exercises-for-generating-chondroprotective-effects-after-anterior-cruciate-ligament-rupture
#19
Nai-Jen Chang, Kuan-Wei Lee, Chih-Jou Chu, Ming-You Shie, Pei-Hsi Chou, Chih-Chan Lin, Peir-In Liang
BACKGROUND: Anterior cruciate ligament (ACL) injury is a well-known risk factor for the development of posttraumatic osteoarthritis (PTOA). However, whether using continuous passive motion (CPM) with or without additional treadmill exercise (TRE) in early ACL injury might provide chondroprotective effects and further decrease the risk of PTOA has yet to be determined. HYPOTHESIS: CPM may offer an enhanced chondroprotective effect, but TRE may attenuate that effect due to the mechanical stress on the joint and inflammatory cytokines in the joint...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28518128/an-in-vitro-caseum-binding-assay-that-predicts-drug-penetration-in-tuberculosis-lesions
#20
Jansy P Sarathy, Hsin-Pin Ho Liang, Danielle Weiner, Jacqueline Gonzales, Laura E Via, Véronique Dartois
The eradication of tuberculosis disease requires drug regimens that can penetrate the multiple layers of complex pulmonary lesions. Drug distribution in the caseous cores of cavities and lesions is especially crucial because they harbor subpopulations of drug-tolerant bacteria also commonly referred to as persisters. Existing methods for the measurement of drug penetration in tuberculosis lesions involve costly and time-consuming in vivo pharmacokinetic studies coupled to bioanalytical or imaging techniques...
May 8, 2017: Journal of Visualized Experiments: JoVE
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