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https://www.readbyqxmd.com/read/28813523/et-26-hydrochloride-et-26-hcl-has-similar-hemodynamic-stability-to-that-of-etomidate-in-normal-and-uncontrolled-hemorrhagic-shock-uhs-rats
#1
Bin Wang, Shouming Chen, Jun Yang, Linghui Yang, Jin Liu, Wensheng Zhang
OBJECTIVE: ET-26 HCl is a promising sedative-hypnotic anesthetic with virtually no effect on adrenocortical steroid synthesis. However, whether or not ET-26 HCl also has a sufficiently wide safety margin and hemodynamic stability similar to that of etomidate and related compounds remains unknown. In this study, the effects of ET-26 HCl, etomidate and propofol on therapeutic index, heart rate (HR), mean arterial pressure (MAP), maximal rate for left ventricular pressure rise (Dmax/t), and maximal rate for left ventricular pressure decline (Dmin/t) were investigated in healthy rats and a rat model of uncontrolled hemorrhagic shock (UHS)...
2017: PloS One
https://www.readbyqxmd.com/read/28810820/quantitative-label-free-evaluation-of-tissue-engineered-skeletal-muscle-through-multiphoton-microscopy
#2
Brian C Syverud, Mary-Ann Mycek, Lisa Marie Larkin
The lack of tools for assessing engineered tissue viability and function in a non-invasive manner is a major regulatory and translational challenge facing tissue engineers. Label-free, nonlinear optical molecular imaging (OMI) has utilized endogenous nicotinamide adenine dinucleotide (NADH) and flavin adenine dinucleotide (FAD) fluorescence to indicate metabolic activity. Similarly, second harmonic generation (SHG) signals from myosin and collagen can measure overall muscle structural integrity and function...
August 16, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28810407/intrasexual-competition-as-a-potential-influence-on-anabolic-androgenic-steroid-use-initiation
#3
Marc Harris, Michael Dunn, Tina Alwyn
An estimated 293,000 people living in the United Kingdom have used anabolic-androgenic steroids. However, there is currently no intervention to reduce usage available in practice or academic circulation throughout the United Kingdom. This study aimed to test a novel hypothesis that increased levels of intrasexual competition may play an important influential role in the use of anabolic-androgenic steroids. Significantly higher levels of intrasexual competition were evident in users compared to non-users but only in the novice group (0-2 years of experience)...
February 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28808494/severe-fibrosing-mediastinitis-with-atypical-presentation-effective-control-with-novel-therapeutic-approach
#4
Abdulaziz Uthman Joury, Ahmad Amer Al Boukai, Tarek Seifaw Kashour
Fibrosing mediastinitis (FM), also known as sclerosing mediastinitis, is an uncommon but serious disease involving the mediastinal structures. A high index of suspicion is essential to establish the diagnosis of FM and starting the appropriate therapy for patients. Here, we report a case of a young female who presented with chest symptoms and subsequently underwent different laboratory and radiologic investigations and an excisional biopsy. The findings of these investigations were consistent with the diagnosis of idiopathic FM...
July 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28806947/conessine-as-a-novel-inhibitor-of-multidrug-efflux-pump-systems-in-pseudomonas-aeruginosa
#5
Thanyaluck Siriyong, Potjanee Srimanote, Sasitorn Chusri, Boon-Ek Yingyongnarongkul, Channarong Suaisom, Varomyalin Tipmanee, Supayang Piyawan Voravuthikunchai
BACKGROUND: Holarrhena antidysenterica has been employed as an ethnobotanical plant for the treatment of dysentery, diarrhoea, fever, and bacterial infections. Biological activities of the principle compound, conessine including anti-diarrhoea and anti-plasmodial effects were documented. Our previous study reported potency of Holarrhena antidysenterica extract and conessine as resistance modifying agents against extensively drug-resistant Acinetobacter baumannii. This study aimed to investigate (i) whether conessine, a steroidal alkaloid compound, could act as a resistance modifying agent against multidrug-resistant Pseudomonas aeruginosa, and (ii) whether MexAB-OprM efflux pump involved in the mechanism...
August 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28803697/tumor-necrosis-factor-alpha-gene-polymorphisms-and-haplotypes-in-egyptian-children-with-nephrotic-syndrome
#6
Doaa M Youssef, Amal S El-Shal, Samia Hussein, Khaled Salah, Abd El Rahman E Ahmed
BACKGROUND: Nephrotic syndrome (NS) characterized by complex pathogenesis and clinical course with relapses; and needs novel breakthroughs for decades. Polymorphisms of cytokines genes including tumor necrosis factor alpha (TNF-α)may influence susceptibility to NS as well as different patients' steroid responses. In the current study, we demonstrated the potential roles of TNF-α promoter gene polymorphisms [-238, -308, -863] and haplotypes in susceptibility to childhood NS. Also, elucidating their possible influence on patients' steroid response and serum TNF-α level...
August 10, 2017: Cytokine
https://www.readbyqxmd.com/read/28803210/investigation-of-ph-and-substituent-effects-on-the-distribution-ratio-of-novel-steroidal-ring-d-and-a-fused-arylpyrazole-regioisomers-and-evaluation-of-their-cell-growth-inhibitory-effects-in-vitro
#7
Ádám Baji, Ferenc Kovács, Gergő Mótyán, Gyula Schneider, János Wölfling, Izabella Sinka, István Zupkó, Imre Ocsovszki, Éva Frank
Novel androstanopyrazoles have been efficiently synthesized from steroidal β-ketoaldehydes with different arylhydrazine hydrochlorides both under acidic and basic conditions. Knorr-type transformations of 16-hydroxymethylene-dehydroepiandrosterone containing its 1,3-dicarbonyl moiety on ring D, proved to be regioselective in pyridine at room temperature, while mixtures of regioisomers were obtained in acidic EtOH under reflux. Contrarily, the cyclocondensation reactions of 2-hydroxymethylene-dihydrotestosterone bearing its reactive functionalities on ring A, led to a mixture of pyrazole regioisomers in varying ratio depending on the applied medium...
August 9, 2017: Steroids
https://www.readbyqxmd.com/read/28801620/a-novel-aldosterone-antagonist-limits-renal-injury-in-5-6-nephrectomy
#8
Clarice K Fujihara, M C Kowala, M D Breyer, Claudia R Sena, Mariliza V Rodrigues, Simone C A Arias, Camilla Fanelli, Denise M Malheiros, P K Jadhav, Chahrzad Montrose-Rafizadeh, Jose E Krieger, Roberto Zatz
Aldosterone antagonists slow the progression of chronic kidney disease (CKD), but their use is limited by hyperkalemia, especially when associated with RAS inhibitors. We examined the renoprotective effects of Ly, a novel non-steroidal mineralocorticoid receptor (MR) blocker, through two experimental protocols: In Protocol 1, male Munich-Wistar rats underwent 5/6 renal ablation (Nx), being divided into: Nx+V, receiving vehicle, Nx+Eple, given eplerenone, 150 mg/kg/day, and Nx+Ly, given Ly, 20 mg/kg/day...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28795489/plasma-metabolomics-reveals-steroidal-alkaloids-as-novel-biomarkers-of-tomato-intake-in-mice
#9
Morgan J Cichon, Ken M Riedl, Lei Wan, Jennifer M Thomas-Ahner, David M Francis, Steven K Clinton, Steven J Schwartz
SCOPE: Diets rich in tomato products are associated with a reduced risk of various chronic disease processes. The carotenoid lycopene is most intensely studied as the bioactive mediating health effects, yet tomatoes contain an array of phytochemicals. We conducted an untargeted metabolomics study on blood plasma to identify novel markers of tomato consumption absorbed from the diet and released into the bloodstream in mice. METHODS AND RESULTS: Male mice were fed a control AIN-93G diet or the same diet supplemented with 0...
August 9, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28780565/clinical-genetic-testing-using-a-custom-designed-steroid-resistant-nephrotic-syndrome-gene-panel-analysis-and-recommendations
#10
Ethan S Sen, Philip Dean, Laura Yarram-Smith, Agnieszka Bierzynska, Geoff Woodward, Chris Buxton, Gemma Dennis, Gavin I Welsh, Maggie Williams, Moin A Saleem
BACKGROUND: There are many single-gene causes of steroid-resistant nephrotic syndrome (SRNS) and the list continues to grow rapidly. Prompt comprehensive diagnostic testing is key to realising the clinical benefits of a genetic diagnosis. This report describes a bespoke-designed, targeted next-generation sequencing (NGS) diagnostic gene panel assay to detect variants in 37 genes including the ability to identify copy number variants (CNVs). METHODS: This study reports results of 302 patients referred for SRNS diagnostic gene panel analysis...
August 5, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28776720/some-novel-mannich-bases-of-5-3-4-dichlorophenyl-1-3-4-oxadiazole-2-3h-one-and-their-anti-inflammatory-activity
#11
Meric Koksal, Irem Ozkan-Dagliyan, Tugce Ozyazici, Beril Kadioglu, Hande Sipahi, Ayhan Bozkurt, Suleyman S Bilge
Non-steroidal anti-inflammatory drugs (NSAIDs), which are widely used for the treatment of rheumatic arthritis, pain, and many different types of inflammatory disorders, cause serious gastrointestinal (GI) side effects. The free carboxylic acid group existing on their chemical structure is correlated with GI toxicity related with all routine NSAIDs. Replacing this functional group with the 1,3,4-oxadiazole bioisostere is a generally used strategy to obtain an anti-inflammatory agent devoid of GI side effects...
August 4, 2017: Archiv der Pharmazie
https://www.readbyqxmd.com/read/28775145/bypassing-drug-resistance-mechanisms-of-prostate-cancer-with-small-molecules-that-target-androgen-receptor-chromatin-interactions
#12
Kush Dalal, Meixia Che, Nanette S Que, Aishwariya Sharma, Rendong Yang, Nada Lallous, Hendrik Borgmann, Deniz Ozistanbullu, Ronnie Tse, Fuqiang Ban, Huifang Li, Kevin J Tam, Mani Roshan-Moniri, Eric Leblanc, Martin E Gleave, Daniel T Gewirth, Scott M Dehm, Artem Cherkasov, Paul S Rennie
Human androgen receptor (AR) is a hormone-activated transcription factor that is an important drug-target in the treatment of prostate cancer. Current small molecule AR-antagonists, such as enzalutamide, compete with androgens that bind to the steroid binding pocket of the AR ligand binding domain (LBD). In castration-resistant prostate cancer (CRPC), drug-resistance can manifest through AR-LBD mutations that convert AR-antagonists into agonists, or by expression of AR-variants lacking the LBD. Such treatment resistance underscores the importance of novel ways of targeting the AR...
August 3, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28774496/adrenal-c11-oxy-c21-steroids-contribute-to-the-c11-oxy-c19-steroid-pool-via-the-backdoor-pathway-in-the-biosynthesis-and-metabolism-of-21-deoxycortisol-and-21-deoxycortisone
#13
Lise Barnard, Rachelle Gent, Desmaré van Rooyen, Amanda C Swart
21-Hydroxylase deficiency presents with increased levels of cytochrome P450 21-hydroxylase substrates, progesterone and 17α-hydroxyprogesterone, which have been implicated in the production of androgens via the backdoor pathway. This study shows the biosynthesis of C11-oxy C21 steroids, 21-deoxycortisol and 21-deoxycortisone, and their metabolism by steroidogenic enzymes in the backdoor pathway yielding novel steroid metabolites: 5α-pregnan-11β,17α-diol-3,20-dione; 5α-pregnan-17α-ol-3,11,20-trione; 5α-pregnan-3α,11β,17α-triol-20-one and 5α-pregnan-3α,17α-diol-11,20-dione...
July 31, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28771393/single-dose-testosterone-administration-impairs-cognitive-reflection-in-men
#14
Gideon Nave, Amos Nadler, David Zava, Colin Camerer
In nonhumans, the sex steroid testosterone regulates reproductive behaviors such as fighting between males and mating. In humans, correlational studies have linked testosterone with aggression and disorders associated with poor impulse control, but the neuropsychological processes at work are poorly understood. Building on a dual-process framework, we propose a mechanism underlying testosterone's behavioral effects in humans: reduction in cognitive reflection. In the largest study of behavioral effects of testosterone administration to date, 243 men received either testosterone or placebo and took the Cognitive Reflection Test (CRT), which estimates the capacity to override incorrect intuitive judgments with deliberate correct responses...
August 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28770285/-treatment-of-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#15
REVIEW
J P Nicolay, C Assaf
Adequate therapeutic management of cutaneous T-cell lymphoma (CTCL) requires the identification of the exact CTCL stage and entity within the current WHO classification. There is no curative therapy for CTCL yet, so that treatment currently aims at improving symptoms and quality of life as well as reducing relapse rates. The treatment has to be stage-adapted. Therapeutic options comprise skin-directed as well as systemic treatment. In early stages, phototherapy and local steroids are the first-line therapeutic options...
August 2, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28768874/pgc1%C3%AE-transcriptional-adaptor-function-governs-hepatitis-b-virus-replication-by-controlling-hbcag-p21-protein-mediated-capsid-formation
#16
Rasha E Shalaby, Saira Iram, Bülent Çakal, Claudia E Oropeza, Alan McLachlan
In the human hepatoma cell line, Huh7, co-expression of the coactivators, peroxisome proliferator-activated receptor gamma coactivator 1α (PGC1α), cAMP responsive element binding protein binding protein (CBP), steroid receptor coactivator 1 (SRC1) and protein arginine methyltransferase 1 (PRMT1) only modestly increase HBV biosynthesis. However, utilizing the human embryonic kidney cell line, HEK293T, it was possible to demonstrate that PGC1α alone can support viral biosynthesis independently of additional coactivator or transcription factor expression...
August 2, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28768536/a-novel-composite-formulation-of-palmitoylethanolamide-and-quercetin-decreases-inflammation-and-relieves-pain-in-inflammatory-and-osteoarthritic-pain-models
#17
Domenico Britti, Rosalia Crupi, Daniela Impellizzeri, Enrico Gugliandolo, Roberta Fusco, Carlo Schievano, Valeria Maria Morittu, Maurizio Evangelista, Rosanna Di Paola, Salvatore Cuzzocrea
BACKGROUND: Osteoarthritis (OA) is a common progressive joint disease in dogs and cats. The goal of OA treatment is to reduce inflammation, minimize pain, and maintain joint function. Currently, non-steroidal anti-inflammatory drugs (e.g., meloxicam) are the cornerstone of treatment for OA pain, but side effects with long-term use pose important challenges to veterinary practitioners when dealing with OA pain. Palmitoylethanolamide (PEA) is a naturally-occurring fatty acid amide, locally produced on demand by tissues in response to stress...
August 2, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28763966/novel-acetylcholinesterase-inhibitors-from-zijuan-tea-and-biosynthetic-pathway-of-caffeoylated-catechin-in-tea-plant
#18
Wei Wang, Xi-Wen Fu, Xin-Long Dai, Fang Hua, Gang-Xiu Chu, Ming-Jie Chu, Feng-Lin Hu, Tie-Jun Ling, Li-Ping Gao, Zhong-Wen Xie, Xiao-Chun Wan, Guan-Hu Bao
Zijuan tea is a special cultivar of Yunnan broad-leaf tea (Camellia sinensis var. assamica) with purple buds, leaves, and stems. Phytochemical study on this tea led to the discovery of three hydroxycinnamoylated catechins (HCCs) (1-3), seven other catechins (4-10), three proanthocyanidins (11-13), five flavones and flavone glycosides (14-18), two alkaloids (19, 20), one steroid (21), and one phenylpropanoid glycoside (22). The isolation and structural elucidation of the caffeoylated catechin (1) by means of spectroscopic techniques were described...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28759473/novel-therapeutic-approaches-for-thrombotic-thrombocytopenic-purpura
#19
Yvette C Tanhehco, Gowthami Arepally, Ara Metjian
PURPOSE OF REVIEW: Acquired thrombotic thrombocytopenic purpura is an immune-mediated thrombotic microangiopathy caused by antibodies to ADAMTS13 (A Disintegrin And Metalloproteinase with a ThromboSpondin type 1 motif, member 13). Standard treatment with therapeutic plasma exchange and immunosuppression with steroids results in high remission and low mortality rates. However, a number of patients remain refractory to frontline therapy and/or experience multiple relapses. This study reviews emerging therapies for thrombotic thrombocytopenic purpura...
July 28, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28757325/scar-management-in-burn-injuries-using-drug-delivery-and-molecular-signaling-current-treatments-and-future-directions
#20
REVIEW
Saeid Amini-Nik, Yusef Yousuf, Marc G Jeschke
In recent decades, there have been tremendous improvements in burn care that have allowed patients to survive severe burn injuries that were once fatal. However, a major limitation of burn care currently is the development of hypertrophic scars in approximately 70% of patients. This significantly decreases the quality of life for patients due to the physical and psychosocial symptoms associated with scarring. Current approaches to manage scarring include surgical techniques and non-surgical methods such as laser therapy, steroid injections, and compression therapy...
July 27, 2017: Advanced Drug Delivery Reviews
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