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https://www.readbyqxmd.com/read/29129269/partial-two-thirds-nephrectomy-in-pigs-a-comparison-of-three-surgical-approaches
#1
Hai-Feng Liu, Wei-Jing Meng, Xiang-Dong Kong, Ge Bai, Hui Li, Jian-Tao Zhang, Hong-Gang Fan, Hong-Bin Wang
Partial (2/3) nephrectomy can be performed via the laparoscopic, retroperitoneal, and transperitoneal approach. Outcomes of the three approaches were compared in this study. 2/3 nephrectomy were performed in 21 healthy Bama miniature pigs (mean bodyweight 20.59±2.78kg). Pigs were divided into three groups: those that underwent 2/3 nephrectomy via laparoscopy (LN group, n=7), the retroperitoneal approach (RN group, n=7), or the transperitoneal approach (TN group, n=7). We monitored pre- and postoperative physiologic parameters, blood cell count, and stress and renal function biomarkers...
November 7, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29119233/potential-outer-membrane-protein-candidates-for-vaccine-development-against-the-pathogen-vibrio-anguillarum-a-reverse-vaccinology-based-identification
#2
Pallavi Baliga, Malathi Shekar, Moleyur Nagarajappa Venugopal
Reverse vaccinology is a widely used approach that has facilitated the rapid identification of vaccine candidates suitable in vaccine development for pathogens. Vibrio anguillarum is a major pathogen responsible for vibriosis in fish and shellfish leading to huge economic losses to the aquaculture industry. Although commercial vaccines are available for fish against this bacterium they have their own limitations. In this study, we used the reverse vaccinology strategy to screen and identify V. anguillarum outer membrane proteins (OMPs) that could serve as vaccine candidates...
November 8, 2017: Current Microbiology
https://www.readbyqxmd.com/read/29094406/liprotides-assist-in-folding-of-outer-membrane-proteins
#3
Jannik Nedergaard Pedersen, Jan Skov Pedersen, Daniel E Otzen
Proteins and lipids can form complexes called liprotides, in which the partially denatured protein forms a shell encasing a lipid core. This effectively stabilizes a lipid micelle in an aqueous solvent and suggests that liprotides may provide a suitable vessel for membrane proteins. Accordingly we have investigated if liprotides consisting of α-lactalbumin and oleate could aid folding of four different outer membrane proteins (OMPs) tOmpA, PagP, BamA and OmpF. tOmpA was able to fold in the presence of the liprotide, and folding did not occur if only oleate or α-lactalbumin were added...
November 1, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29080839/cidec-differentially-regulates-lipid-deposition-and-secretion-through-two-tissue-specific-isoforms
#4
Yixing Li, Huifang Kang, Yi Chu, Yi Jin, Lifang Zhang, Ranran Yang, Zhiwang Zhang, Shuhong Zhao, Lei Zhou
Lipid metabolism has an important role in animal growth, development, and reproduction. As a regulator of lipid metabolism, CIDEc promotes unilocular development of lipid droplets and stimulates intracellular lipid deposition, and has two isoforms, CIDEc-l and CIDEc-s. CIDEc-l has ten more N-terminal amino acids than CIDEc-s. However, the functions of two isoforms are largely unknown. In this study, the expression profiles of two isoforms in Bama pigs differed, with cidec-l dominant in the liver and small intestine, and cidec-s dominant in muscle and adipose tissue...
October 25, 2017: Gene
https://www.readbyqxmd.com/read/29080417/identification-of-a-sustainable-two-plant-diet-that-effectively-prevents-age-related-metabolic-syndrome-and-extends-lifespan-in-aged-mice
#5
Xiang-Yong Li, Ying-Hua Liu, Bin Wang, Chih-Yu Chen, Hong-Man Zhang, Jing X Kang
The current system of food production is linked to both the increasing prevalence of chronic disease and the deterioration of the environment, and thereby calls for novel ways of producing nutritious foods in a sustainable manner. In the "longevity village" of Bama, China, we have identified two plant foods, hemp seed and bitter vegetable (Sonchus oleraceus), that are commonly consumed by its residents and grow abundantly in unfarmed land without fertilizers or pesticides. Here, we show that a diet composed of these two foods (the "HB diet") provides a sufficient variety of nutrients and confers significant health benefits...
September 19, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29067123/alcoholization-of-pyogenichepatic-abscess-with-absolute-alcohol-in-bama-minipigs
#6
Ru-Gang Zhang, Xiu-Li Zhang, Yun-Sheng Yang
Pyogenic hepatic abscess (PHA) is a rare, but potentially serious disease. At present, ultrasound-guided or computed tomography-guided percutaneous needle aspiration or catheter drainage is appropriate as a first-line treatment. However, it is difficult to aspirate or drain pus and to select the appropriate antibiotic therapy if the abscess consists of thick pus and polymicrobial confections, or its pathogenic bacterium is multidrug resistant and cryptogenic. Case studies of alcoholization provide a novel method to manage PHA...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29055967/reductive-evolution-in-outer-membrane-protein-biogenesis-has-not-compromised-cell-surface-complexity-in-helicobacter-pylori
#7
Chaille T Webb, Dilini Chandrapala, Siti Nurbaya Oslan, Rebecca S Bamert, Rhys D Grinter, Rhys A Dunstan, Rebecca J Gorrell, Jiangning Song, Richard A Strugnell, Trevor Lithgow, Terry Kwok
Helicobacter pylori is a gram-negative bacterial pathogen that chronically inhabits the human stomach. To survive and maintain advantage, it has evolved unique host-pathogen interactions mediated by Helicobacter-specific proteins in the bacterial outer membrane. These outer membrane proteins (OMPs) are anchored to the cell surface via a C-terminal β-barrel domain, which requires their assembly by the β-barrel assembly machinery (BAM). Here we have assessed the complexity of the OMP C-terminal β-barrel domains employed by H...
October 21, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/29044903/native-t1-mapping-for-characterization-of-acute-and-chronic-myocardial-infarction-in-swine-comparison-with-contrast-enhanced-mri
#8
Xi Liu, Jiang-Long Hou, Zhi-Gang Yang, Chun-Chao Xia, Lin-Jun Xie, Peng-Fei Ye, Wan-Lin Peng, Lei Li, Meng-Xi Yang, Ying-Kun Guo
BACKGROUND: Both acute and chronic myocardial infarction (AMI and CMI, respectively) exhibit delayed enhancement; however, clinical decision-making processes frequently require the differentiation of these two types of myocardial injury. PURPOSE: To investigate the reliability of AMI and CMI characterization using native T1 mapping and its feasibility for discriminating AMI from CMI. STUDY TYPE: Case-control. ANIMAL MODEL: The study cohort comprised 12 AMI (mean post-MI, 3...
October 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29038532/the-major-outer-sheath-protein-forms-distinct-conformers-and-multimeric-complexes-in-the-outer-membrane-and-periplasm-of-treponema-denticola
#9
Robbins Puthenveetil, Sanjiv Kumar, Melissa J Caimano, Abhishek Dey, Arvind Anand, Olga Vinogradova, Justin D Radolf
The major outer sheath protein (MOSP) is a prominent constituent of the cell envelope of Treponema denticola (TDE) and one of its principal virulence determinants. Bioinformatics predicts that MOSP consists of N- and C-terminal domains, MOSP(N) and MOSP(C). Biophysical analysis of constructs refolded in vitro demonstrated that MOSP(C), previously shown to possess porin activity, forms amphiphilic trimers, while MOSP(N) forms an extended hydrophilic monomer. In TDE and E. coli expressing MOSP with a PelB signal sequence (PelB-MOSP), MOSP(C) is OM-embedded and surface-exposed, while MOSP(N) resides in the periplasm...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28974626/bama-%C3%AE-6c-strand-and-periplasmic-turns-are-critical-for-outer-membrane-protein-insertion-and-assembly
#10
Yinghong Gu, Yi Zeng, Zhongshan Wang, Changjiang Dong
Outer membrane β-barrel proteins play important roles in importing nutrients, exporting wastes and conducting signals in Gram-negative bacteria, mitochondria and chloroplasts. The outer membrane proteins are inserted and assembled into the outer membrane by OMP85 family proteins. In Escherichia coli , the b-barrel assembly machinery (BAM) contains four lipoproteins BamB, BamC, BamD and BamE, and one outer membrane protein BamA, forming a "top hat"-like structure. Structural and functional studies of the E...
October 3, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28972010/thyroid-hormone-regulates-hematopoiesis-via-the-tr-klf9-axis
#11
Ying Zhang, Yuanyuan Xue, Chunwei Cao, Jiaojiao Huang, Qianlong Hong, Tang Hai, Qitao Jia, Xianlong Wang, Guosong Qin, Jing Yao, Xiao Wang, Qiantao Zheng, Rui Zhang, Yongshun Li, Ailing Luo, Nan Zhang, Guizhi Shi, Yanfang Wang, Hao Ying, Zhonghua Liu, Hongmei Wang, Anming Meng, Qi Zhou, Hong Wei, Feng Liu, Jianguo Zhao
Congenital hypothyroidism (CH) is one of the most prevalent endocrine diseases and is often accompanied by anemia and immunodeficiency in patients, for which the underlying mechanisms remain unknown. Here we created a severe CH model together with anemia and T lymphopenia to mimic the clinical features of hypothyroid patients by ethylnitrosourea (ENU) mutagenesis in Bama miniature pigs. A novel recessive c.1226A>G transition of the dual oxidase 2 (DUOX2) gene was identified as the causative mutation. This mutation hindered the production of hydrogen peroxide (H2O2) and thus contributed to thyroid hormone (TH) synthesis failure...
September 25, 2017: Blood
https://www.readbyqxmd.com/read/28968594/mirna-expression-profile-of-the-myocardial-tissue-of-pigs-with-coronary-microembolization
#12
Qiang Su, Lang Li, Jinmin Zhao, Yuhan Sun, Huafeng Yang
BACKGROUND/AIMS: Coronary microembolization (CME) is a serious complication of coronary heart disease and is considered as a strong predictor of poor long-term prognosis and major cardiac adverse events. Here, we identified differentially expressed microRNAs (miRNAs) in the myocardial tissue of CME pigs, and predicted and analyzed the possible functions of their target genes. METHODS: Twelve Bama mini-pigs were randomly assigned to the sham and CME group (n = 6 in each group)...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28965245/n-%C3%AE-methylamino-l-alanine-and-its-naturally-occurring-isomers-in-cyanobacterial-blooms-in-lake-winnipeg
#13
Stephanie L Bishop, Jeff K Kerkovius, Frederic Menard, Susan J Murch
Cyanobacterial blooms have affected Lake Winnipeg since the mid-1990s due to an increased phosphorus loading into the lake, which has been exacerbated by stressors such as climate change and eutrophication. Aquatic ecosystems involving cyanobacteria have been found to contain N-β-methylamino-L-alanine (BMAA) and 2,4-diaminobutyric acid (DAB), non-protein amino acids that are associated with neurodegenerative disease, as well as two of the naturally occurring isomers, N-2(amino)ethylglycine (AEG) and β-amino-N-methylalanine (BAMA)...
September 30, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28963492/immunoprotective-potential-of-bama-the-outer-membrane-protein-assembly-factor-against-mdr-acinetobacter-baumannii
#14
Ravinder Singh, Neena Capalash, Prince Sharma
Acinetobacter baumannii infections are responsible for major health problems in immunocompromised patients particularly in intensive care units. Due to rapid acquisition of and also inherent drug resistance, a vaccine is an effective treatment option against this pathogen. BamA, an outer membrane β-barrel assembly protein, was identified in A. baumannii as potential vaccine candidate by in silico analysis. The immunoprotective efficacy of this highly conserved protein was investigated against a virulent multidrug resistant clinical isolate using murine pneumonia model...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28944798/transcriptomic-analysis-of-bama-pig-s-liver-in-various-nutritional-states-reveals-a-metabolic-difference-of-fatty-acids
#15
Yixing Li, Yi Chu, Lin Yu, Huifang Kang, Lei Zhou
Both fasting and treatment with a high-fat diet (HFD) can dramatically change fat metabolism in the liver and, thus, are commonly used methods to investigate hepatic fat metabolism and related diseases. Here, the gene expression profiles of pig liver under both conditions were investigated and changes in hepatic triacylglycerol (TG) levels under different diet conditions were determined. In this study, both fasting and HFD conditions significantly increased hepatic TG levels and serum levels of cholesterol, TG, high-density lipoprotein, low-density lipoprotein, and apolipoprotein B...
September 25, 2017: Food & Function
https://www.readbyqxmd.com/read/28941872/effect-of-low-frequency-but-high-intensity-noise-exposure-on-swine-brain-blood-barrier-permeability-and-its-mechanism-of-injury
#16
Xiaoyun Wang, Yaowen Lai, Xiaojian Zhang, Jie Zhao
OBJECTIVES: Vibroacousitic disease (VAD) is caused by excessive exposure to low-frequency but high-intensity noise. The integrity of the brain blood barrier (BBB) is essential for the brain. The study aimed to investigate the effect of noise exposure on the BBB. METHODS: Healthy male Bama swine were exposed to 50, 70, 100, and 120Hz, 140dB noise for 30min. After exposure, CT brain imaging and ex vivo fluorescent imaging of parenchymal EB leakage were performed (each group consisted of N=3 swine)...
September 21, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28923649/hypothermic-machine-perfusion-s-protection-on-porcine-kidney-graft-uncovers-greater-akt-erk-phosphorylation
#17
N He, J-H Li, J-J Jia, K-D Xu, Y-F Zhou, L Jiang, H-H Lu, S-Y Yin, H-Y Xie, L Zhou, S-S Zheng
BACKGROUND: To investigate the potential mechanisms of hypothermic machine perfusion (HMP)'s beneficial effects on kidney graft over static cold storage (SCS) in vitro. METHODS: Ten kidneys of 5 Bama miniature male pigs were paired into 2 groups: SCS group and HMP group. Preservation solutions were taken at 0, 1, 3, and 6 hours for the measurement of K(+), Na(+), Cl(-), blood urea nitrogen (BUN), creatinine (Cr), and lactate dehydrogenase (LDH) using the standard laboratory methods...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28919234/effects-of-periplasmic-chaperones-and-membrane-thickness-on-bama-catalyzed-outer-membrane-protein-folding
#18
Bob Schiffrin, Antonio N Calabrese, Anna J Higgins, Julia R Humes, Alison E Ashcroft, Antreas C Kalli, David J Brockwell, Sheena E Radford
The biogenesis of outer-membrane proteins (OMPs) in gram-negative bacteria involves delivery by periplasmic chaperones to the β-barrel assembly machinery (BAM), which catalyzes OMP insertion into the outer membrane. Here, we examine the effects of membrane thickness, the Escherichia coli periplasmic chaperones Skp and SurA, and BamA, the central subunit of the BAM complex, on the folding kinetics of a model OMP (tOmpA) using fluorescence spectroscopy, native mass spectrometry, and molecular dynamics simulations...
September 15, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28918899/stem-loop-structures-within-mrna-coding-sequences-activate-translation-initiation-and-mediate-control-by-small-regulatory-rnas
#19
Jonathan Jagodnik, Claude Chiaruttini, Maude Guillier
Initiation is the rate-limiting step of translation, and in bacteria, mRNA secondary structure has been extensively reported as limiting the efficiency of translation by occluding the ribosome-binding site. In striking contrast with this inhibitory effect, we report here that stem-loop structures located within coding sequences instead activate translation initiation of the Escherichia coli fepA and bamA mRNAs involved in iron acquisition and outer membrane proteins assembly, respectively. Both structures promote ribosome binding in vitro, independently of their nucleotide sequence...
October 5, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28915498/tantalum-coated-pedicle-screws-enhance-implant-integration
#20
Liang-Yu Shi, An Wang, Fa-Zhi Zang, Jian-Xi Wang, Xian-Wei Pan, Hua-Jiang Chen
Because titanium alloy (Ti) has the natural advantage of a low elastic modulus, it has become the most commonly used material for the manufacturing of pedicle screws. However, its poor shear strength and osteogenic ability are undesirable properties. The superior osteoinductivity demonstrated by tantalum (Ta) in oral and maxillofacial surgery and joint surgery leads us to assume that the tantalum-coated pedicle screws may have better osteogenic properties and bone anchoring strength. To verify this hypothesis, MC3T3-E1 cells and human mesenchymal stem cells (hBMSCs) were seeded on the surface of Ta and Ti disks to compare the effects of two different metals on cell adhesion, proliferation, and differentiation...
September 7, 2017: Colloids and Surfaces. B, Biointerfaces
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