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Gaoli He, Beining Guo, Jing Zhang, Yi Li, Xiaojie Wu, Yaxin Fan, Yuancheng Chen, Guoying Cao, Jicheng Yu
Levornidazole is a novel third-generation nitroimidazoles antibiotic which metabolism and disposition in human are not well known. We have previously developed two methods to quantify levornidazole and its phase I metabolites, Ml (Hydroxylation metabolite), M2 (N-dealkylation metabolite) and M4 (Oxidative dechlorination metabolite), in human plasma and urine. In this study, we developed three novel liquid chromatographic-tandem mass spectrometric (LC-MS/MS) methods and analyzed its phase II metabolites, sulfate conjugate (M6) and glucuronide conjugate (M16), in human plasma and urine, and the parent drug and above-mentioned five metabolites in human feces samples...
February 23, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Maud Pradines, Marjolaine Baude, Christina Marciniak, Gerard Francisco, Jean-Michel Gracies, Emilie Hutin, Nicolas Bayle
BACKGROUND: In current health systems, long duration stretching, performed daily, cannot be obtained through prescriptions of physical therapy. In addition, the short-term efficacy of the various stretching techniques is disputed and their long-term effects remain undocumented. OBJECTIVE: To evaluate changes in extensibility in six lower limb muscles and in ambulation speed following a ≥1-year self-stretch program, the Guided Self-rehabilitation Contract (GSC), in individuals with chronic spastic paresis...
March 2, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
Oktay Gurcan, Ahmet Gurhan Gurcay, Atilla Kazanci, Tuncer Goker, Oguzhan Eylen, Omer Faruk Turkoglu
The Fahr syndrome (FS) is a rare degenerative neurological disorder (its prevalence is <0.5%). FS is distinguished by the presence of abnormal bilateral intracranial calcifications with a predilection for the basal ganglia, also presented by movement disorders such as parkinsonism, paresis, and speech disorders. Chronic subdural hematoma (CSH), which is typically the result of mild head trauma, is a regularly encountered condition in elderly. A 63-year-old man has referred to our clinic from another hospital with a history of mild head trauma approximately a month ago...
January 2018: Asian Journal of Neurosurgery
Kevin Christian Bermea, Alejandro Rodríguez-García, Andrew Tsin, Hugo Alberto Barrera-Saldaña
IMPORTANCE: Diabetic retinopathy (DR) is one of the most common of all diabetic complications. The number of people with DR in the United States is expected to increase to 16 million by 2050. DR is the leading cause of blindness among working-age adults in many different countries, including the United States. In later DR stages, neovascularization is associated with extensive retinal capillary non-perfusion and vitreo-proliferation leading to retinal detachment. This neovascularization is orchestrated by an imbalance of growth factors in the retina from which somatolactogens (pituitary growth hormone, GH-N; placental growth hormone, GH-V; prolactin, PRL; and placental lactogen, PL, also referred as chorionic somatomammotropin, CSH), may play an important role...
February 6, 2018: Growth Hormone & IGF Research
Haifeng Zhang, Li Quan, Pei Pei, Ye Lin, Chao Feng, Hongyan Guan, Fang Wang, Ting Zhang, Jianxin Wu, Junsheng Huo
A sensitive method for the simultaneous analysis of vitamin A (VA), 25-hydroxyl vitamin D3 (25-OH VD3) and α-tocopherol (VE) in children plasma by liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed and validated. Sample preparation chose the solid phase extraction. 100 μL of plasma was mixed with 300 μL ethanol contained 4 μL isotope-labelled analytes. After a series operation, the supernatant was applied to the solid phase extraction (SPE) plate (HLB μElution plate). The eluate was evaporated, and reconstituted in 100 μL methanol...
December 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Xingjuan Chen, Da Song, Jingjing Xu, Enze Li, Guoping Sun, Meiying Xu
Sphingomonads are isolated at exceptionally high frequency from organic polluted environments and assumed to be more hydrophobic than other Gram-negative bacteria. However, the potential roles of cell-surface hydrophobicity (CSH) in the cell survival in polluted environment, as well as the mechanisms underlying the CSH of sphingomonads, remain unclear. Sphingobium hydrophobicum C1T is a highly hydrophobic sphingomonad isolated from electronic-waste contaminated sediment. In this study, we found that exposure to the typical pollutants in electronic-waste contaminated sediment, such as the heavy metal ion Pb and the organic compound deca-brominated diphenyl ether (deca-BDE), resulted in the development of even higher CSH of the hydrophobic strain C1T; but no significant change was observed in the low CSH of its hydrophilic variant C2...
February 7, 2018: Applied Microbiology and Biotechnology
Felix LewisOscar, Chari Nithya, Sulaiman Ali Alharbi, Naiyf S Alharbi, Nooruddin Thajuddin
Biofilm forming pathogenic bacteria showing resistance towards antimicrobial agents has increased the urge to find an alternative treatment strategy. Among the biofilm forming pathogenic bacteria, Pseudomonas aeruginosa is a well-recognised Gram negative biofilm former causing nosocomial infection and other disease among immunocompromised patients. The aim of the current study is to evaluate the antipathogenic potentials of S. platensis against P. aeruginosa. S. platensis methanolic extract (SME) inhibited the biofilm (89%), extracellular polymeric substances (EPS), cell surface hydrophobicity (CSH) (44%), pyocyanin, pyoveridin and swarming motility of P...
January 31, 2018: Microbial Pathogenesis
Diana Cristina Pérez-Ibave, Irám Pablo Rodríguez-Sánchez, María Lourdes Garza-Rodríguez, Antonio Alí Pérez-Maya, Maricela Luna, Carlos Arámburo, Andrew Tsin, George Perry, Karim Mohamed-Noriega, Jibran Mohamed-Noriega, Humberto Cavazos Adame, Jesús Mohamed Hamsho, Hugo Alberto Barrera-Saldaña
The human growth hormone (GH) locus is comprised by two GH (GH1 and GH2) genes and three chorionic somatomammotropin (CSH1, CSH2 and CSH-L) genes. While GH1 is expressed in the pituitary gland, the rest are expressed in the placenta. However, GH1 is also expressed in several extrapituitary tissues, including the eye. So to understand the role of this hormone in the eye we used the baboon (Papio hamadryas), that like humans has a multigenic GH locus; we set up to investigate the expression and regulation of GH locus in adult and fetal baboon ocular tissues...
January 30, 2018: Experimental Eye Research
Pritesh Contractor, Abhishek Gandhi, Gajendra Solanki, Priyanka A Shah, Pranav S Shrivastav
An accurate, sensitive and selective method is developed for determination of ergocalciferol (vitamin D2) in human plasma using LC-MS/MS. After liquid-liquid extraction with n-hexane, ergocalciferol was derivatized by reacting with 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD), a strong dienophile based on Diels-Alder reaction. Ergocalciferol and its deuterated internal standard, ergocalciferol-d6, were analyzed on X Select CSH C18 (100 mm×4.6 mm, 2.5 µm) column using acetonitrile and 0.1% (v/v) formic acid in water containing 0...
December 2017: Journal of Pharmaceutical Analysis
C R Kerth, K R Wall, S B Smith, T R Whitney, J L Glasscock, J T Sawyer
Effects of using ground woody plants in Rambouillet wether lamb (n = 48) feedlot diets on carcass characteristics, adipose tissue fatty acid composition, and sensory panel traits were evaluated. In a randomized design study with 2 feeding periods (Period 1 = fed a 70% concentrate diet from d 0 to 27 d; Period 2 = fed an 86% concentrate diet from d 28 to 57), lambs were individually fed 6 diets that differed only by roughage source (n = 8 animals/treatment; initial BW = 32.9 ± 3.2 kg): cottonseed hulls (CSH; control) or ground wood consisting of either redberry (RED), blueberry (BLUE), one-seed (ONE), or eastern red cedar (ERC) Juniperus spp...
January 29, 2018: Journal of Animal Science
Hong Fang, April Chiu, Kaaren K Reichard
Objectives: We report the clinicopathologic characteristics of eight cases of crystal-storing histiocytosis (CSH) with bone marrow (BM) involvement (BM-CSH) and review CSH cases published in the English literature. Methods: We queried our pathology database for BM cases with CSH mentioned in the final diagnosis/comments from June 2011 to August 2016. Results: Eight cases of BM-CSH were identified. The underlying diagnoses consisted predominantly of plasma cell disorders (88%) associated with monotypic κ light chain...
January 29, 2018: American Journal of Clinical Pathology
Zongyun Huang, Yue Hu, Yan Zha, Robert Perrone, Joan Ruan, William P Fish
This paper describes the development of a simple reversed-phase HPLC method that can quantitate trace amounts of a polymeric degradants (BMT-041910) in asunaprevir drug substance and formulated drug product with quantitation limits of ∼0.05% w/w. The method has overcome several challenges of polymer quantitation such as band broadening, peak coeluting and low sensitivity. The hydrophobic function group (BOC) of BMT-041910 is removed to increase its aqueous solubility by a simple sample treatment procedure (des-BOC)...
January 11, 2018: Journal of Pharmaceutical and Biomedical Analysis
Rafael Simões Gonçalves, Polliana Mendes Candia Scaffa, Marina Ciccone Giacomini, Cristina de Mattos Pimenta Vidal, Heitor Marques Honório, Linda Wang
The effect of sodium trimetaphosphate (STMP) as an antiproteolytic and remineralizing agent on demineralized dentin was evaluated in vitro. The inhibitory potential of STMP at 0.5, 1.5, 3.5, and 5% against recombinant matrix metalloproteinases (MMPs) MMPs-2 and -9 was assessed by zymography. To investigate its remineralization potential, 40 bovine root specimens were obtained and subjected to a demineralization protocol to produce caries-like dentin lesions. After that, dentin surfaces were divided into 3 areas: (1) mineralized (no treatment); (2) demineralized; and (3) demineralized/treated with STMP and submitted to a pH-cycling associated or not with STMP (1...
January 18, 2018: Caries Research
Joshua Bakhsheshian, Gabriel Zada, Martin H Pham
Cavernous sinus hemangiomas (CSHs) are rare vascular tumors, which are infrequently encountered in everyday neurosurgical practice. Attempted resection of this lesion without preoperative planning carries a high risk for significant blood loss and cranial neuropathies. Radiation treatments can provide an alternative and safe treatment modality for these lesions. Therefore an increased awareness is warranted for their clinical suspicion. We reported on a patient who presented with visual deficits and a mass in the sellar, suprasellar, and middle fossa regions...
February 2018: World Neurosurgery
Mahalingam Anjugam, Baskaralingam Vaseeharan, Arokiadhas Iswarya, Mani Divya, Narayanan Marimuthu Prabhu, Krishnasamy Sankaranarayanan
The present study reports the biological synthesis of silver nanoparticles using crustacean immune molecule β-1, 3 glucan binding protein (β-GBP) purified from the haemolymph of blue swimmer crab Portunus pelagicus. The characterization of synthesized β-GBP based silver nanoparticles (Ppβ-GBP-AgNPs) was made by UV-Vis spectroscopy, XRD, FTIR and TEM analysis. UV-Vis spectra recorded the strong absorbance peak at 420 nm due to its surface plasmon resonance. The XRD analysis revealed the crystalline nature of synthesized nanoparticles with Bragg's reflection peaks at (111), (200), (220), (311) planes...
December 5, 2017: Microbial Pathogenesis
Felix LewisOscar, Chari Nithya, Sulaiman Ali Alharbi, Naiyf S Alharbi, Nooruddin Thajuddin
Pseudomonas aeruginosa is a Gram negative, opportunistic biofilm forming pathogenic bacterium which is developing as a serious problem worldwide. The pathogenicity of P. aeruginosa mainly depends upon biofilm and quorum sensing (QS) mechanism. Targeting biofilm and QS regulated factor will automatically reduce the pathogenicity of P. aeruginosa. Therefore it is compulsory to identify naturally derived biofilm and QS inhibitors against P. aeruginosa. In the present study Oscillatoria subuliformis, a marine cyanobacterium was used against the biofilm and QS of P...
January 2018: Microbial Pathogenesis
Shandilya Mahamuni Baira, Pradipbhai D Kalariya, Rakesh Nimbalkar, Prabha Garg, R Srinivas, M V N Kumar Talluri
RATIONALE: Forced degradation studies are useful for better understanding of the stability of active pharmaceutical ingredients and drugs and to generate information about drug degradation pathways and formation of degradation products (DPs). Identification of DPs plays a vital role in establishing the safety and therapeutic benefit of the drug. METHODS: Canagliflozin (CAN) was subjected to different stress conditions as per ICH guidelines (Q1A R2). All the DPs and the drug were well separated on Aquity CSH C18 (100 × 2...
November 14, 2017: Rapid Communications in Mass Spectrometry: RCM
Michal Douša, Markéta Slavíková, Tomáš Kubelka, Josef Černý, Petr Gibala, Josef Zezula
An HPLC method with UV and electrospray ionization - mass spectrometry (ESI-MS) detection was developed for the separation and determination of obeticholic acid (OBE) and its related compounds in development process and quality control. OBE and its related compounds were classified into three major group based on the mass spectra profiles: (A) those containing a hydroxyl group at position 3 and 7, (B) those containing a hydroxyl group and/or carbonyl group at position 3, hydrogen, ethyl or ethylidene group at position 6 and a hydroxyl group and/or carbonyl group at position 7, and (C) those containing carbonyl groups at position 3 and 7...
November 4, 2017: Journal of Pharmaceutical and Biomedical Analysis
Ján Škoviera, Ivan Černušák, Florent Louis, Pavel Neogrády
Correlated ab initio methods [CASPT2 and R-CCSD(T)] in conjunction with the ANO-RCC basis sets in large contraction were used to calculate potential energy curves (PECs) of the ground and excited electronic states of CsH(+) (doublets and quartets) with the inclusion of the scalar relativistic effects and spin-orbit interaction. The ground X(2)Σ(+) state is a rather fragile van der Waals molecular ion. The binding energy of this X(2)Σ(+) state provided by both computational methods is estimated to be 0.02-0...
November 9, 2017: Journal of Molecular Modeling
Elizabeth A Maxwell, Heidi Phillips, David J Schaeffer, Timothy M Fan
OBJECTIVE: To determine the in vitro chemosensitivity of feline injection site-associated sarcoma (FISAS) cells to carboplatin concentrations generated by elution of carboplatin-impregnated calcium sulfate hemihydrate (CI-CSH) beads. STUDY DESIGN: In vitro study. SAMPLE: Five immortalized cell lines from histologically confirmed, primary FISASs. METHODS: For each cell line, one 96-well microplate was used for each time point (24, 48, 72 hours)...
November 9, 2017: Veterinary Surgery: VS
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