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https://www.readbyqxmd.com/read/28749448/pharmacokinetic-study-of-biotransformation-products-from-an-anxiolytic-fraction-of-tilia-americana
#1
Virgilio Alfonso Juárez Ramírez, María Isabel Jiménez-Beltrán, Alejandro Zamilpa, Maribel Herrera-Ruiz, Rodolfo Abarca-Vargas, Galia Lombardo-Earl, Jaime Tortoriello, Enrique Jiménez-Ferrer
An anxiolytic fraction of Tilia americana standardized in tiliroside, rutin, quercitrin, quercetin glucoside, and kaempferol was obtained. After oral administration of the fraction, the above-mentioned flavonoids were not detected in plasma over 24 h. However, meta and para hydroxyphenylacetic acid and dihydroxyphenylacetic acid (m-HPAA, p-HPAA and DOPAC) were monitored. These are the biotransformation compounds of the aglycones of kaempferol and quercetin; these aglycones are products of the other flavonoids present in the anxiolytic fraction...
July 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28749447/enhanced-uptake-of-fe%C3%A2-o%C3%A2-nanoparticles-by-intestinal-epithelial-cells-in-a-state-of-inflammation
#2
Gang Zhou, Jin Zhang, Chun Pan, Naicheng Liu, Zhenheng Wang, Junfeng Zhang
Fe₃O₄ nanoparticles (Fe₃O₄ NPs) have been used for medical and drug applications, although the mechanisms of cellular uptake and transport need to be further evaluated under inflammatory conditions. In the present study, we investigated the uptake of Fe₃O₄ NPs (20, 50, 100, and 200 nm) by intestinal epithelial cells under inflammatory conditions via the light scattering of flow cytometry and inductively coupled plasma mass spectrometry (ICP-MS) techniques. The results of the correlation analysis indicated that the uptake ratios of Fe₃O₄ NPs by intestinal epithelial cells under inflammatory conditions were higher than those under the control conditions...
July 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28749415/association-between-toenail-magnesium-and-type-2-diabetes-in-chinese-adults
#3
Jiguo Zhang, Huijun Wang, Zhihong Wang, Ji Zhang, Bing Zhang
Previous studies have showed an inverse association between magnesium level and type 2 diabetes, but the results are inconsistent, and the evidence relates only to dietary and serum magnesium. Moreover, it is not certain how these findings are applicable to Asian people. This study was designed to examine the association between toenail magnesium and type 2 diabetes in Chinese adults. The sample was 5683 adults aged 18 years or older from the 2009 China Health and Nutrition Survey. We used hemoglobin A1c equal to or greater than 6...
July 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28749305/the-pharmacokinetics-of-topical-itraconazole-in-panamanian-golden-frogs-atelopus-zeteki
#4
Amy Rifkin, Marike Visser, Kevin Barrett, Dawn Boothe, Ellen Bronson
Chytridiomycosis is caused by the fungus Batrachochytrium dendrobatidis and is one of the primary causes of the global decline in amphibian populations and specifically of the Panamanian golden frog ( Atelopus zeteki ). Itraconazole has been demonstrated to be an effective treatment for chytridiomycosis by inhibiting cytochrome P450, a major enzyme important for the structure of B. dendrobatidis zoospores' plasma membranes. However, anecdotal reports of toxicity in this and other amphibian species have been reported at the 0...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749301/pilot-study-pharmacokinetics-of-oral-and-topical-moxidectin-in-the-reticulated-giraffe-giraffa-camelopardalis
#5
Gary West, Elizabeth E Hammond, Butch KuKanich
The objective of this study was to obtain an estimate of the pharmacokinetic parameters of moxidectin administered at a dosage of 1 mg/kg orally and topically to healthy adult giraffe ( Giraffa camelopardalis ). The maximum plasma concentration (CMAX) of moxidectin after oral and topical administration was 69.2 ± 4.6 and 18.6 ± 16.1 ng/ml (P = 0.045), respectively. The areas under the plasma curve (AUC), a measure of total drug exposure, was 532.0 ± 232.3 and 209.1 ± 180.0 day*ng/ml (P = 0.308) for the oral and topical administrations, respectively...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749287/hematologic-and-plasma-biochemical-values-of-cinereous-vulture-aegypius-monachus
#6
Seong H Seok, Dong H Jeong, Se J Park, Seung Y Lee, Hee C Lee, Seong C Yeon
The aim of this study was to establish hematologic and plasma biochemical reference intervals for clinically healthy cinereous vultures ( Aegypius monachus ) in a rehabilitation setting before release. Animals used in this study were cinereous vultures hospitalized in a wildlife center located in the province of Gyeongsangnam-do, the Republic of Korea. Blood samples were collected from 31 cinereous vultures before their release between 2011 and 2014 at the Gyeongnam Wildlife Center. Complete blood count and plasma biochemical analyses were performed within 2 hr of the blood sampling...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749255/pharmacokinetics-of-orally-administered-voriconazole-in-african-penguins-spheniscus-demersus-after-single-and-multiple-doses
#7
Michael W Hyatt, Nathan P Wiederhold, William W Hope, Katharine E Stott
Aspergillosis is a common respiratory fungal disease in African penguins ( Spheniscus demersus ) under managed care, and treatment failures with itraconazole due to drug resistance are increasingly common, leading to recent use of voriconazole. Empirical dosing with voriconazole based on other avian studies has resulted in adverse clinical drug effects in penguins. The objective of this study was to determine oral voriconazole pharmacokinetics (PK) in African penguins (n = 18). Single and once daily multiple oral doses of 5 mg/kg voriconazole were evaluated with a 4-mo washout period between trials...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749130/fluorination-of-boron-doped-diamond-film-electrodes-for-minimization-of-perchlorate-formation
#8
Pralay Gayen, Brian P Chaplin
This research investigated the effects of surface fluorination on both rates of organic compound oxidation (phenol, terephthalic acid (TA)) and ClO4(-) formation at boron-doped diamond (BDD) film anodes at 22(o) C. Different fluorination methods (i.e., electrochemical oxidation with perfluorooctanoic acid (PFOA), radio frequency plasma, and silanization) were used to incorporate fluorinated moieties on the BDD surface, which was confirmed by X-ray photoelectron spectroscopy (XPS). The silanization method was found to be the most effective fluorination method using a 1H, 1H, 2H, 2H perfluorodecyltrichlorosilane (aliphatic silane) precursor to form a self assembled monolayer (SAM) on the oxygenated BDD surface...
July 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28749086/1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol-plag-reduces-hepatic-injury-in-concanavalin-a-treated-mice
#9
Young-Eun Ko, Sun Young Yoon, Sun-Yung Ly, Joo-Heon Kim, Ki-Young Sohn, Jae Wha Kim
1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG), a chemically synthesized monoacetyldiaglyceride, is one of the constituents in Sika deer antlers and has been known traditionally as having immunomodulatory effects. However, the mechanism by which PLAG controls neutrophil migration, which evokes liver injury in the hepatitis animal model, remains largely unknown. This study was designed to evaluate the immunomodulatory effects of PLAG on cytokine secretion and neutrophil migration in vivo and in vitro. The injection of mice with Concanavalin A (Con A) induced leukocyte infiltration in the liver and increased plasma cytokine levels...
July 27, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28749022/effects-of-gnrh-a-progesterone-releasing-device-and-energy-balance-on-an-oestrus-synchronisation-program-in-anoestrous-dairy-cows
#10
S K Sahu, J F Cockrem, T J Parkinson, R A Laven
OBJECTIVE: The aim of this research was to study the roles of the day 0 energy balance and gonadotrophin-releasing hormone (GnRH) and progesterone levels on dominant follicle (DF) and corpus luteum (CL) development during the first 7 days of a gonadotrophin-prostaglandin-gonadotrophin (GPG) + progesterone (P4) program in anoestrous dairy cows. METHODS: Cows (n = 81) were allocated to one of the three treatments: (1) GPG + P4 (days 0 and 9, 100 µg GnRH; day 0-7, intravaginal P4 device; day 7, 500 µg PGF2α ); (2) GPG (as for treatment 1 but excluding the P4 device) and (3) prostaglandin + GnRH + P4 (as for treatment 1, but excluding day 0 GnRH)...
August 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28749011/simultaneous-quantification-of-volitinib-and-gefitinib-in-rat-plasma-by-hplc-ms-ms-for-application-to-a-pharmacokinetic-study-in-rats
#11
Chi-Kyoung Noh, Jong-Hwa Lee, Min-Soo Kim, Han-Joo Maeng, Suk-Jae Chung
A rapid, simple and accurate procedure was developed and validated for the simultaneous quantification of two anticancer agents, volitinib and gefitinib in rat plasma by high-performance liquid chromatography with tandem mass spectrometry. The samples were separated by gradient elution from a CN column within five minutes, using 0.1% formic acid in acetonitrile and 10 mM ammonium formate solution (pH 3.0) as mobile phase. When plasma samples were deproteinated by adding methanol, the analytes in the extract were detected in the positive ionization mode with the tracer ion mass of 346...
July 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28749007/reactive-oxygen-species-as-mediators-of-sperm-capacitation-and-pathological-damage
#12
REVIEW
R J Aitken
Oxidative stress plays a major role in the life and death of mammalian spermatozoa. These gametes are professional generators of reactive oxygen species (ROS), which appear to derive from three potential sources: sperm mitochondria, cytosolic L-amino acid oxidases, and plasma membrane nicotinamide adenine dinucleotide phosphate oxidases. The oxidative stress created via these sources appears to play a significant role in driving the physiological changes associated with sperm capacitation through the stimulation of a cyclic adenosine monophosphate/Protein kinase A phosphorylation cascade, including the activation of Extracellular signal regulated kinase-like proteins, massive up-regulation of tyrosine phosphorylation in the sperm tail, as well as the induction of sterol oxidation...
July 27, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28748903/immunoglobulin-a-nephropathy-in-a-patient-with-igg-kappa-light-chain-myeloma
#13
Abhilash Chandra, Anupama Kaul, Vinita Aggarwal
Paraproteins can cause a variable set of pathologic changes in the kidney. The introduction of novel anti-plasma cell agents capable of reversing renal failure have revolutionized the management of paraprotein-mediated kidney injury. Activation of the transcription factor nuclear factor kB (NF-kB) has been shown to be involved in the development of human glomerulonephritis (GN). Inhibitors of NF-kB may provide potential agents for treatment of immune complex GN. In this paper, we report a patient with IgA nephropathy and IgG kappa myeloma, who responded dramatically to chemotherapy targeted toward myeloma...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748857/effect-of-high-fat-diet-induced-disorders-on-rat-with-endometrial-hyperplasia-and-adiponectin-system-in-circulation-and-uterus
#14
Chen-Guang Shang, Zhao-Hui Liu, Xiao-Hui Wang, Zong-Hao Feng, Yan Zhang
BACKGROUND: Epidemiologic and genetic studies suggest a link between insulin resistance (IR) and endometrial cancer, and endometrial hyperplasia (EH) is a precancerous stage of endometrial cancer. Adiponectin is an adipokine which previously shown to be a risk factor for endometrial cancer. The aim of the study was to develop a rat model of IR and EH and evaluate adiponectin system in circulation and uterus. METHODS: This study was a 46-week animal trial from February 2014 to January 2015...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28748854/ratios-of-t-helper-2-cells-to-t-helper-1-cells-and-cytokine-levels-in-patients-with-hepatitis-b
#15
Ming-Hui Li, Dan Zhang, Lu Zhang, Xiao-Jing Qu, Yao Lu, Ge Shen, Shu-Ling Wu, Min Chang, Ru-Yu Liu, Lei-Ping Hu, Hong-Xiao Hao, Wen-Hao Hua, Shu-Jing Song, Gang Wan, Shun-Ai Liu, Yao Xie
BACKGROUND: Hepatitis B is an immune response-mediated disease. The aim of this study was to explore the differences of ratios of T-helper (Th) 2 cells to Th1 cells and cytokine levels in acute hepatitis B (AHB) patients and chronic hepatitis B virus (HBV)-infected patients in immune-tolerance and immune-active phases. METHODS: Thirty chronic HBV-infected patients in the immune-tolerant phase (IT group) and 50 chronic hepatitis B patients in the immune-active (clearance) phase (IC group), 32 AHB patients (AHB group), and 13 healthy individuals (HI group) were enrolled in the study...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28748849/a-novel-missense-mutation-in-peripheral-myelin-protein-22-causes-charcot-marie-tooth-disease
#16
Li-Xi Li, Hai-Lin Dong, Bao-Guo Xiao, Zhi-Ying Wu
BACKGROUND: Charcot-Marie-Tooth disease (CMT) is the most common inherited peripheral neuropathy. A great number of causative genes have been described in CMT, and among them, the heterozygous duplication of peripheral myelin protein-22 (PMP22) is the major cause. Although the missense mutation in PMP22 is rarely reported, it has been demonstrated to be associated with CMT. This study described a novel missense mutation of PMP22 in a Chinese family with CMT phenotype. METHODS: Targeted next-generation sequencing (NGS) was used to screen the causative genes in a family featured with an autosomal dominant demyelinating form of CMT...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28748764/inflammatory-biomarkers-in-atrial-fibrillation
#17
Effimia Zacharia, Nikolaos Papageorgiou, Adam Ioannou, Gerasimos Siasos, Manolis Vavuranakis, George Latsios, Charalampos Vlachopoulos, Konstantinos Toutouzas, Spyridon Deftereos, Rui Providência, Dimitris Tousoulis
During the last few years, a significant number of studies have attempted to clarify the underlying mechanisms that lead to the presentation of atrial fibrillation (AF). Inflammation is a key component of the pathophysiological processes that lead to the development of AF; the amplification of inflammatory pathways triggers AF, and, in tandem, AF increases the inflammatory state. Indeed, the plasma levels of several inflammatory biomarkers are elevated in patients with AF. In addition, the levels of specific inflammatory biomarkers may provide information regarding to the AF duration...
July 27, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28748662/repeated-administration-of-high-dose-depot-medroxyprogesterone-acetate-does-not-alter-shivsf162p3-viral-kinetics-and-tenofovir-pharmacokinetics-when-delivered-via-intravaginal-rings
#18
Priya Srinivasan, Jining Zhang, Chuong T Dinh, Ryan S Teller, Janet M McNicholl, Patrick F Kiser, Betsy C Herold, James M Smith
BACKGROUND: Intravaginal rings (IVR) for HIV prevention will likely be used by women on depot medroxyprogesterone acetate (DMPA) hormonal contraception. We used pigtailed macaques to evaluate the effects of DMPA on tenofovir disoproxil fumarate (TDF) IVR pharmacokinetics and viral shedding. METHODS: Mucosal tenofovir (TFV) levels were compared in SHIVSF162p3 -negative DMPA-treated (n=4) and normally cycling (n=6) macaques receiving TDF IVRs. Plasma viremia and vaginal shedding were determined in groups of SHIVSF162p3 -positive DMPA-treated (n=6) and normally cycling (n=5) macaques...
August 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28748659/mauritian-cynomolgus-macaques-with-m3m4-mhc-genotype-control-sivmac251-infection
#19
Hongzhao Li, Robert W Omange, Chris Czarnecki, Jorge F Correia-Pinto, Jose Crecente-Campo, Meika Richmond, Lin Li, Nancy Schultz-Darken, Maria J Alonso, James B Whitney, Francis A Plummer, Ma Luo
BACKGROUND: Understanding natural HIV control may lead to new preventative or therapeutic strategies. Several protective major histocompatibility complex (MHC) genotypes were found in humans and rhesus macaques. Here, we report a simian immunodeficiency virus (SIV) controller MHC genotype in Mauritian cynomolgus macaques (MCMs). METHODS: Twelve MHC-genotyped MCMs were infected with SIVmac251 and monitored for viral loads and CD4+ T-cell counts. RESULTS: Two macaques with M3M4 genotype exhibited the lowest peak viral loads (log plasma SIV RNA copies/mL), nearly 3 logs lower than those in most macaques with other MHC haplotype combinations, and set point viral loads below the level of detection limit by RT-qPCR (<2 log RNA copies/mL)...
August 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28748607/simultaneous-detection-of-zinc-dimethyldithiocarbamate-and-zinc-ethylenebisdithiocarbamate-in-cabbage-leaves-by-capillary-electrophoresis-with-inductively-coupled-plasma-mass-spectrometry
#20
Jinfa Chen, Fengfu Fu, Siying Wu, Jing Wang, Zongwen Wang
Herein, a simple and highly sensitive method for the simultaneous detection of trace zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate by capillary electrophoresis with inductively coupled plasma mass spectrometry is reported. Zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate were chelated with trans-1,2-diaminocyclohexane-N,N,N´,N´-tetraacetic acid to form a macromolecule complex. Then, these two compounds were separated by α-cyclodextrin-modified capillary electrophoresis within 12 min at a separation voltage of 15 kV and measured by inductively coupled plasma mass spectrometry...
July 27, 2017: Journal of Separation Science
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