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https://www.readbyqxmd.com/read/28350814/compensatory-changes-in-cyp-expression-in-three-different-toxicology-mouse-models-car-null-cyp3a-null-and-cyp2b9-10-13-null-mice
#1
Ramiya Kumar, Linda C Mota, Elizabeth J Litoff, John P Rooney, W Tyler Boswell, Elliott Courter, Charles M Henderson, Juan P Hernandez, J Christopher Corton, David D Moore, William S Baldwin
Targeted mutant models are common in mechanistic toxicology experiments investigating the absorption, metabolism, distribution, or elimination (ADME) of chemicals from individuals. Key models include those for xenosensing transcription factors and cytochrome P450s (CYP). Here we investigated changes in transcript levels, protein expression, and steroid hydroxylation of several xenobiotic detoxifying CYPs in constitutive androstane receptor (CAR)-null and two CYP-null mouse models that have subfamily members regulated by CAR; the Cyp3a-null and a newly described Cyp2b9/10/13-null mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/28341592/comparison-of-two-cadaveric-acellular-dermal-matrices-for-immediate-breast-reconstruction-a-prospective-randomized-trial
#2
Katharine M Hinchcliff, Hakan Orbay, Brittany K Busse, Heath Charvet, Mankushpreet Kaur, David E Sahar
AlloDerm RTU(®) and AlloMaxTM are two acellular dermal matrices (ADMs) used in implant-based breast reconstruction. In this study, we examined whether different processing methods for the ADMs lead to a disparity in histologic, clinical, and financial outcomes after breast reconstruction. Thirty patients undergoing implant-based breast reconstruction were randomized into AlloMax or AlloDerm arms (n = 15, each). ADM was placed at the time of immediate reconstruction. Patients were evaluated for complications on postoperative days 7, 14, and 30...
March 6, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28339714/effect-of-whole-yeast-cell-product-supplementation-citristim%C3%A2-on-immune-responses-and-cecal-microflora-species-in-pullet-and-layer-chickens-during-an-experimental-coccidial-challenge
#3
Ashley D Markazi, Victor Perez, Mamduh Sifri, Revathi Shanmugasundaram, Ramesh K Selvaraj
Three separate experiments were conducted to study the effects of whole yeast cell product supplementation in pullets and layer hens. Body weight gain, fecal and intestinal coccidial oocyst counts, cecal microflora species, cytokine mRNA amounts, and CD4+ and CD8+ T-cell populations in the cecal tonsils were analyzed following an experimental coccidial infection. In Experiment I, day-old Leghorn layer chicks were fed 3 experimental diets with 0, 0.1, or 0.2% whole yeast cell product (CitriStim®, ADM, Decatur, IL)...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28337618/reply-innovative-management-of-implant-infection-and-exposure-in-adm-implant-based-breast-reconstruction-with-negative-pressure-wound-therapy
#4
Antonello Accurso, Nicola Rocco, Edi Mattera, Francesco D'Andrea
No abstract text is available yet for this article.
March 23, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28334432/uch-l1-containing-exosomes-mediate-chemotherapeutic-resistance-transfer-in-breast-cancer
#5
Kuan Ning, Teng Wang, Xu Sun, Pengfei Zhang, Yun Chen, Jian Jin, Dong Hua
BACKGROUND: Chemotherapy resistance has become a serious challenge in the treatment of breast cancer. Previous studies showed cells can transfer proteins, including those responsible for drug resistance to adjacent cells via exosomes. METHODS: The switches of drug resistance via exosomes transfer were assessed by CellTiter-Blue Viability assay, flow cytometry, and immunostaining analysis. Relative protein levels of Ubiquitin carboxyl terminal hydrolase-L1 (UCH-L1), P-glycoprotein (P-gp), extracellular-signal regulated protein kinase1/2 (ERK1/2), and phospho-extracellular-signal regulated protein kinase1/2 (p-ERK1/2) were measured by Western blot...
March 23, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28330095/potential-mosquito-repellent-compounds-of-ocimum-species-against-3n7h-and-3q8i-of-anopheles-gambiae
#6
Venugopal Gaddaguti, Talluri Venkateswara Rao, Allu Prasada Rao
Mosquitoes are exceptionally efficient in detecting their hosts for blood meal using odorant binding proteins, viz. 3N7H and 3Q8I and spread several dreadful diseases. DEET is a synthetic mosquito repellent widely used all over world for protection against mosquito bite. Reports reveal that, synthetic mosquito repellents may pose health problems in considerably large population. In view of the above fact, we made an attempt to discover efficient and novel natural mosquito repellent compounds with least impact on human health...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28327441/structure-based-design-synthesis-and-biological-evaluation-of-amino-phosphonate-derivatives-as-human-glucokinase-activators
#7
Nanda Kumar Yellapu, Ravendra Babu Kilaru, Nagaraju Chamarthi, Sarma Pvgk, Bhaskar Matcha
Glucokinase (GK) is a potential therapeutic target of type 2 diabetes and GK activators (GKAs) represent a promising class of small organic molecules which enhance GK activity. Based on the configuration and conformation of the allosteric site of GK, we have designed a novel class of amino phosphonate derivatives in order to develop potent GKAs. The QSAR model developed using numerous descriptors revealed its potential with the best effective statistical values of RMSE=1.52 and r(2)=0.30. Moreover, application of this model on the present test set GKAs proved to be worthy to predict their activities as a better linear relationship was observed with RMSE=0...
March 2, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28323389/atomic-force-microscopy-in-the-production-of-a-biovital-skin-graft-based-on-human-acellular-dermal-matrix-produced-in-house-and-in-vitro-cultured-human-fibroblasts
#8
Wojciech Łabuś, Justyna Glik, Agnieszka Klama-Baryła, Diana Kitala, Małgorzata Kraut, Mariusz Maj, Mariusz Nowak, Marcelina Misiuga, Andrzej Marcinkowski, Barbara Trzebicka, Ryszard Poloczek, Marek Kawecki
The most efficient method in III° burn treatment is the use of the autologous split thickness skin grafts that were donated from undamaged body area. The main limitation of this method is lack of suitable donor sites. Tissue engineering is a useful tool to solve this problem. The goal of this study was to find the most efficient way of producing biovital skin substitute based on in house produced acellular dermal matrix ADM and in vitro cultured fibroblasts. Sixty samples of sterilized human allogeneic skin (that came from 10 different donors) were used to examine the influence of decellularizing substances on extracellular matrix and clinical usefulness of the test samples of allogeneic human dermis...
March 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28322199/adrenomedullin-suppresses-vascular-endothelial-growth-factor-induced-vascular-hyperpermeability-and-inflammation-in-retinopathy
#9
Akira Imai, Yuichi Toriyama, Yasuhiro Iesato, Kazutaka Hirabayashi, Takayuki Sakurai, Akiko Kamiyoshi, Yuka Ichikawa-Shindo, Hisaka Kawate, Megumu Tanaka, Tian Liu, Xian Xian, Liuyu Zhai, Kun Dai, Keiya Tanimura, Teng Liu, Nanqi Cui, Akihiro Yamauchi, Toshinori Murata, Takayuki Shindo
Diabetic macular edema (DME) is caused by blood-retinal barrier breakdown associated with retinal vascular hyperpermeability and inflammation, and it is the major cause of visual dysfunction in diabetic retinopathy. Adrenomedullin (ADM) is an endogenous peptide first identified as a strong vasodilator. ADM is expressed in the eyes and is up-regulated in various eye diseases, although the pathophysiological significance is largely unknown. We investigated the effect of ADM on DME. In Kimba mice, which overexpress human vascular endothelial growth factor in their retinas, the capillary dropout, vascular leakage, and vascular fragility characteristic of diabetic retinopathy were observed, and these changes were accompanied by retinal inflammation...
March 16, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28319875/electrophysiologic-features-of-ulnar-neuropathy-in-childhood-and-adolescence
#10
Ioannis Karakis, Wendy Liew, Heather Szelag Fournier, H Royden Jones, Basil T Darras, Peter B Kang
OBJECTIVE: To analyze patterns of nerve injury in pediatric ulnar neuropathy (PUN). METHODS: Retrospective analysis of 49 children with PUN. RESULTS: Sensory loss in digit V was the prevailing complaint (89%). Predominant localization was at the elbow (55%). Diminished ulnar SNAP was the most common abnormality (71%) with median axon loss estimate (MAXE) of 62%. Dorsal ulnar cutaneous (DUC) sensory nerve action potential (SNAP) was reduced in 55% with MAXE of 43%...
February 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28302029/in-silico-adme-studies-for-new-drug-discovery-from-chemical-compounds-to-chinese-herbal-medicines
#11
Guojun Yan, Xiaobing Wang, Zhou Chen, Xianhui Wu, Jinhuo Pan, Yushen Huang, Gang Wan, Zhaogang Yang
Nowadays, in-silico tools are widely used to provide the potential structure of the metabolites formed depending on the site of metabolism. These methods can also highlight the molecular moieties that help to direct the molecule into the cytochrome cavity so that the site of metabolism is in proximity to the catalytic center. In this mini-review, we summarized three aspects of the in-silico methods in the application of prediction the ADME (absorption, distribution, metabolism and excretion) properties of compounds: structure-based approaches for predicting molecular modeling of drug metabolizing enzymes; in-silico metabolite prediction; and pharmacophore models for analysis substrate specificity...
March 15, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28301816/mao-enzymes-inhibitory-activity-of-new-benzimidazole-derivatives-including-hydrazone-and-propargyl-side-chains
#12
Özgür Devrim Can, Derya Osmaniye, Ümide Demir Özkay, Begüm Nurpelin Sağlık, Serkan Levent, Sinem Ilgın, Merve Baysal, Yusuf Özkay, Zafer Asım Kaplancıklı
In the present work, 15 new N'-(arylidene)-4-(1-(prop-2-yn-1-yl)-1H-benzo[d]imidazol-2-yl)benzohydrazide (4a-4o) were designed and synthesized. The structures of the synthesized compounds were elucidated using FT-IR, (1)H-NMR, (13)C-NMR, and HRMS spectral data. The inhibitory activity of the compounds 4a-4o against hMAO-A and hMAO-B enzymes was evaluated by using in vitro Amlex Red(®) reagent based fluorometric method. Due to lots of high-cost kits including this assay, we determined the ingredients of the kits from the data sheets of several suppliers, and adjusted a protocol by working with various concentrations and volumes of these ingredients...
March 8, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28301155/exploration-of-2-pyridin-4-ylmethyl-amino-nicotinamide-derivatives-as-potent-reversal-agents-against-p-glycoprotein-mediated-multidrug-resistance
#13
Qianqian Qiu, Wei Shi, Zheng Li, Bo Zhang, Miaobo Pan, Jian Cui, Yuxuan Dai, Wenlong Huang, Hai Qian
Overexpression of the ATP-binding cassette (ABC) transport proteins, like ABCB1, commonly referred to as P-glycoprotein (P-gp), initiates active efflux of a broad spectrum of unrelated chemotherapeutic drugs in structure and function, leading to chemotherapy failure. A series of 2-((pyridin-4-ylmethyl)amino)nicotinamide derivatives as potent reversal agents against P-glycoprotein-mediated multidrug resistance (MDR) were designed and synthesized. The majority of target compounds displayed great reversal potency, especially 9n...
March 16, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28296716/dermal-autograft-using-donor-breast-as-alternative-to-acellular-dermal-matrices-in-tissue-expander-breast-reconstruction-a-comparative-review
#14
William Darden North, Christopher S Kubajak, Brad St Martin, Brian Rinker
BACKGROUND: Shifting preference for implant-based breast reconstruction has resulted in an increased use of acellular dermal matrix (ADM) in tissue-expander breast reconstruction. The benefits afforded by ADM must be weighed against a potential increased risk for postoperative complications. Dermal autograft-assisted breast reconstruction using autograft harvest from the lower abdomen has been shown to result in equivalent aesthetics and patient satisfaction compared with ADM at a lower cost, with fewer complications...
March 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28287730/discovery-of-n-3r-4r-4-fluoro-1-6-3-methoxy-1-methyl-1h-pyrazol-4-yl-amino-9-methyl-9h-purin-2-yl-pyrrolidine-3-yl-acrylamide-pf-06747775-through-structure-based-drug-design-a-high-affinity-irreversible-inhibitor-targeting-oncogenic-egfr-mutants-with-selectivity
#15
Simon Planken, Douglas Carl Behenna, Sajiv K Nair, Theodore Otto Johnson, Asako Nagata, Chau Almaden, Simon Bailey, T Eric Ballard, Louise Bernier, Hengmiao Cheng, Sujin Cho-Schultz, Deepak Dalvie, Judith G Deal, Dac M Dinh, Martin P Edwards, Rose Ann Ferre, Ketan S Gajiwala, Michelle D Hemkens, Robert S Kania, John C Kath, Jean Matthews, Brion W Murray, Sherry Niessen, Suvi T M Orr, Mason Pairish, Neal W Sach, Hong Shen, Manli Shi, James Solowiej, Khanh Tran, Elaine Tseng, Paolo Vicini, Yuli Wang, Scott L Weinrich, Ru Zhou, Michael Zientek, Longqing Liu, Yiqin Luo, Shuibo Xin, Chengyi Zhang, Jennifer Anne Lafontaine
Mutant epidermal growth factor receptor (EGFR) is a major driver of non-small cell lung cancer (NSCLC). Marketed first generation inhibitors, such as erlotinib, effect a transient beneficial response in EGFR-mutant NSCLC patients before resistance mechanisms render these inhibitors ineffective. Secondary oncogenic EGFR mutations account for approximately 50% of relapses, the most common being the gatekeeper T790M substitution that renders existing therapies ineffective. The discovery of PF-06459988 (1), an irreversible pyrrolopyrimidine inhibitor of EGFR T790M mutants was recently disclosed1...
March 13, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28287439/custom-array-comparative-genomic-hybridization-the-importance-of-dna-quality-an-expert-eye-and-variant-validation
#16
Francesca Lantieri, Michela Malacarne, Stefania Gimelli, Giuseppe Santamaria, Domenico Coviello, Isabella Ceccherini
The presence of false positive and false negative results in the Array Comparative Genomic Hybridization (aCGH) design is poorly addressed in literature reports. We took advantage of a custom aCGH recently carried out to analyze its design performance, the use of several Agilent aberrations detection algorithms, and the presence of false results. Our study provides a confirmation that the high density design does not generate more noise than standard designs and, might reach a good resolution. We noticed a not negligible presence of false negative and false positive results in the imbalances call performed by the Agilent software...
March 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28282003/complex-ventral-hernia-repair-with-acellular-dermal-matrices-clinical-and-quality-of-life-outcomes
#17
John Scott Roth, Amanda Zachem, Margaret A Plymale, Daniel L Davenport
Acellular dermal matrices (ADMs) are used in conjunction with complex hernia repair, but their efficacy is often debated. This study assesses clinical and quality of life (QOL) outcomes in multiply comorbid patients undergoing complex ventral hernia repair using ADMs. After obtaining institutional review board approval, a prospective study was conducted evaluating patients undergoing complex ventral incisional hernia repair with abdominal wall reconstruction (AWR) using either human (Flex HD) or porcine ADM (Strattice)...
February 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28280894/clinical-outcomes-in-breast-reconstruction-patients-using-a-sterile-acellular-dermal-matrix-allograft
#18
Juan A Ortiz
BACKGROUND: Human acellular dermal matrices (ADMs) have enabled successful breast reconstructions while decreasing muscle donor morbidity and pain for the patient. However, some literature reports indicate an increase in complications, especially infection. The decellularization and terminal sterilization properties of DermACELL (D-ADM), a human ADM, may reduce the rate of complications in augmented breast reconstruction while still maintaining successful outcomes. In the study presented here, we evaluate the quality and safety of outcomes with the use of D-ADM during tissue expander breast reconstruction...
March 9, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28275223/evaluation-of-eight-biomarkers-to-predict-short-term-mortality-in-patients-with-acute-severe-dyspnea
#19
Claire Ara-Somohano, Agnès Bonadona, Francoise Carpentier, Patricia Pavese, Aurélien Vesin, Rebecca Hamidfar-Roy, Clémence Minet, Gerald Vanzetto, Carole Schwebel, Jean F Timsit
BACKGROUND: Being able to better predict risk and optimal care for patients presenting with acute dyspnea is critical. Prognostic biomarkers are well known: amino-terminal pro-Btype Natriuretic Peptide, troponin, C-reactive protein, procalcitonin. Some were more recently developed: mid-regional pro-A-type natriuretic peptide (Mid Pro-ANP), mid-regional-proadrenomedullin (MR-proADM), pro-endothelin, copeptin. The aim of the paper was to evaluate prognostic value of clinical findings and 8 biomarkers in patients with severe acute dyspnea...
March 8, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28274845/exploring-the-interactions-of-irbesartan-and-irbesartan-2-hydroxypropyl-%C3%AE-cyclodextrin-complex-with-model-membranes
#20
Αdamantia S Liossi, Dimitrios Ntountaniotis, Tahsin F Kellici, Maria V Chatziathanasiadou, Grigorios Megariotis, Maria Mania, Johanna Becker-Baldus, Manfred Kriechbaum, Andraž Krajnc, Eirini Christodoulou, Clemens Glaubitz, Michael Rappolt, Heinz Amenitsch, Gregor Mali, Doros N Theodorou, Georgia Valsami, Marinos Pitsikalis, Hermis Iatrou, Andreas G Tzakos, Thomas Mavromoustakos
The interactions of irbesartan (IRB) and irbesartan-2-hydroxypropyl-β-cyclodextrin (HP-β-CD) complex with dipalmitoyl phosphatidylcholine (DPPC) bilayers have been explored utilizing an array of biophysical techniques ranging from differential scanning calorimetry (DSC), small angle X-ray scattering (SAXS), ESI mass spectrometry (ESI-MS) and solid state nuclear magnetic resonance (ssNMR). Molecular dynamics (MD) calculations have been also conducted to complement the experimental results. Irbesartan was found to be embedded in the lipid membrane core and to affect the phase transition properties of the DPPC bilayers...
March 6, 2017: Biochimica et Biophysica Acta
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