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https://www.readbyqxmd.com/read/28340400/pharmacoinformatics-exploration-of-polyphenol-oxidases-leading-to-novel-inhibitors-by-virtual-screening-and-molecular-dynamic-simulation-study
#1
Mubashir Hassan, Qamar Abbas, Zaman Ashraf, Ahmed A Moustafa, Sung-Yum Seo
Polyphenol oxidases (PPOs)/tyrosinases are metal-dependent enzymes and known as important targets for melanogenesis. Although considerable attempts have been conducted to control the melanin-associated diseases by using various inhibitors. However, the exploration of the best anti-melanin inhibitor without side effect still remains a challenge in drug discovery. In present study, protein structure prediction, ligand-based pharmacophore modeling, virtual screening, molecular docking and dynamic simulation study were used to screen the strong novel inhibitor to cure melanogenesis...
March 15, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28331332/clinical-role-of-brexpiprazole-in-depression-and-schizophrenia
#2
REVIEW
Nishant B Parikh, Diana M Robinson, Anita H Clayton
Brexpiprazole, a serotonin-dopamine activity modulator, is the second D2 partial agonist to come to market and has been approved for the treatment of schizophrenia and as an adjunctive treatment in major depressive disorder. With less intrinsic activity than aripiprazole at the D2 receptor and higher potency at 5-HT2A, 5-HT1A, and α1B receptors, the pharmacological properties of brexpiprazole suggest a more tolerable side effect profile with regard to akathisia, extrapyramidal dysfunction, and sedation. While no head-to-head data are currently available, double-blind placebo-controlled studies show favorable results, with the number needed to treat (NNT) vs placebo of 6-15 for response in acute schizophrenia treatment and 4 for maintenance...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28324017/a-novel-selective-bombesin-receptor-subtype-3-agonist-promotes-weight-loss-in-male-diet-induced-obese-rats-with-circadian-rhythm-change
#3
Yasunori Nio, Natsu Hotta, Minoru Maruyama, Kenichi Hamagami, Toshimi Nagi, Masaaki Funata, Junichi Sakamoto, Masanori Nakakariya, Nobuyuki Amano, Tomohiro Okawa, Yasuyoshi Arikawa, Shinobu Sasaki, Shoki Okuda, Shizuo Kasai, Yugo Habata, Yasutaka Nagisa
Bombesin receptor subtype 3 (BRS-3) is an orphan G-protein-coupled receptor. Based on the obese phenotype of male BRS-3-deficient mice, BRS-3 has been considered an attractive target for obesity treatment. Here, we developed a novel selective BRS-3 agonist (Compound-A) and evaluated its anti-obesity effects. Compound-A showed anorectic effects and enhanced energy expenditure in diet-induced obese (DIO)-F344 rats. Moreover, repeated oral administration of Compound-A for 7 days resulted in a significant body weight reduction in DIO-F344 rats...
March 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28324010/separating-the-anti-inflammatory-and-diabetogenic-effects-of-glucocorticoids-through-lxr%C3%AE-antagonism
#4
Rucha Patel, Lilia Magomedova, Ricky Tsai, Stéphane Angers, Arturo Orellana, Carolyn L Cummins
Synthetic glucocorticoids (GCs) including dexamethasone (DEX) are powerful anti-inflammatory drugs. Long-term use of GCs, however, can result in metabolic side effects such as hyperglycemia, hepatosteatosis, and insulin resistance. The glucocorticoid receptor (GR) and liver X receptors (LXRα and LXRβ) regulate overlapping genes involved in gluconeogenesis and inflammation. We have previously shown that Lxrβ-/- mice are resistant to the diabetogenic effects of DEX, but still sensitive to its immunosuppressive actions...
January 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28321284/gynaecomastia-in-two-men-on-stable-antiretroviral-therapy-who-commenced-treatment-for-tuberculosis
#5
Jeremy D Kratz, Ahmad Y El-Shazly, Santos G Mambuque, Elpidio Demetria, Peter Veldkamp, Timothy S Anderson
Gynaecomastia is a common clinical presentation that varies from benign presentations in stages of human development to hormonal pathology, mainly due to hepatic dysfunction, malignancy, and adverse pharmacologic effects. We describe the development of significant bilateral gynaecomastia after starting treatment for pulmonary tuberculosis (TB) in two males with WHO stage III Human Immunodeficiency Virus (HIV) infection on stable antiretroviral regimens. Emerging reports suggest that distinct hepatic impairment in efavirenz metabolism modulates oestrogenic activity, which may be potentiated by anti-tuberculosis therapy...
December 2016: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/28321214/exogenous-l-valine-promotes-phagocytosis-to-kill-multidrug-resistant-bacterial-pathogens
#6
Xin-Hai Chen, Shi-Rao Liu, Bo Peng, Dan Li, Zhi-Xue Cheng, Jia-Xin Zhu, Song Zhang, Yu-Ming Peng, Hui Li, Tian-Tuo Zhang, Xuan-Xian Peng
The emergence of multidrug-resistant bacteria presents a severe threat to public health and causes extensive losses in livestock husbandry and aquaculture. Effective strategies to control such infections are in high demand. Enhancing host immunity is an ideal strategy with fewer side effects than antibiotics. To explore metabolite candidates, we applied a metabolomics approach to investigate the metabolic profiles of mice after Klebsiella pneumoniae infection. Compared with the mice that died from K. pneumoniae infection, mice that survived the infection displayed elevated levels of l-valine...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28320023/-update-opipramol
#7
Maximilian Gahr, Christoph Hiemke, Bernhard J Connemann
Opipramol was developed in the 1960s as an antidepressant and has chemical similarities with tricyclic antidepressants. Pharmacodynamic properties with absent reuptake inhibition of serotonin and noradrenaline and agonism at sigma receptors distinguish opipramol from tricyclics. Furthermore, antidepressive effects are smaller than the anxiolytic ones. The mechanism of action of opipramol is currently not sufficiently understood. Agonistic effects at sigma receptors have been linked with therapeutic effects...
March 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28315197/the-positive-regulation-of-enos-signaling-by-ppar-agonists-in-cardiovascular-diseases
#8
REVIEW
Cristina Maccallini, Adriano Mollica, Rosa Amoroso
Increasing evidence shows that activation of peroxisome proliferator-activated receptors (PPARs) plays an essential role in the regulation of vascular endothelial function through a range of mechanisms, including non-metabolic. Among these, the PPAR-mediated activation of endothelial nitric oxide synthase (eNOS) appears to be of considerable importance. The regulated and sustained bioavailability of nitric oxide (NO) in the endothelium is essential to avoid the development of cardiovascular diseases such as hypertension or atherosclerosis...
March 17, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/28304162/rational-design-synthesis-and-biological-evaluation-of-heterocyclic-quinolones-targeting-the-respiratory-chain-of-mycobacterium-tuberculosis
#9
Weiqian David Hong, Peter D Gibbons, Suet C Leung, Richard Amewu, Paul A Stocks, Andrew Valentine Stachulski, Pedro C Horta, Maria Lurdes Santos Cristiano, Alison E Shone, Darren Moss, Alison Ardrey, Raman Sharma, Ashley J Warman, Paul T P Bedingfield, Nicholas E Fisher, Ghaith Aljayyoussi, Sally Mead, Maxine Caws, Neil G Berry, Stephen A Ward, Giancarlo A Biagini, Paul M O'Neill, Gemma Louise Nixon
A High-throughput screen (HTS) was undertaken against the respiratory chain dehydrogenase component, NADH:menaquinone oxidoreductase (Ndh) of Mycobacterium tuberculosis (Mtb). 11,000 compounds were selected for the HTS based on the known phenothiazine Ndh inhibitors, trifluoperazine and thioridazine. Combined HTS (11,000 compounds) and in-house screening of a limited number of quinolones (50 compounds) identified ~100 hits and four distinct chemotypes, the most promising of which contained the quinolone core...
March 17, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28303904/microbiota-a-key-orchestrator-of-cancer-therapy
#10
REVIEW
Soumen Roy, Giorgio Trinchieri
The microbiota is composed of commensal bacteria and other microorganisms that live on the epithelial barriers of the host. The commensal microbiota is important for the health and survival of the organism. Microbiota influences physiological functions from the maintenance of barrier homeostasis locally to the regulation of metabolism, haematopoiesis, inflammation, immunity and other functions systemically. The microbiota is also involved in the initiation, progression and dissemination of cancer both at epithelial barriers and in sterile tissues...
March 17, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28303703/assessment-of-dietary-choices-of-young-women-in-the-contexts-of-hormonal-contraceptives
#11
Mariola Friedrich, Magdalena Junak
Background: Metabolic changes caused by hormonal contraception combined with unbalanced diet may pose many threats, and deficiency or excess of nutrients may increase the risk of using such contraceptives. Objective: The purpose of the survey was to assess the dietary choices of young women using hormonal contraceptives, taking into account their general knowledge about the contraception and its impact on their bodies. Material and methods: The survey comprised 67 women aged from 18 to 25 years...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28300186/renal-medulla-is-more-sensitive-to-cisplatin-than-cortex-revealed-by-untargeted-mass-spectrometry-based-metabolomics-in-rats
#12
Pei Zhang, Jia-Qing Chen, Wan-Qiu Huang, Wei Li, Yin Huang, Zun-Jian Zhang, Feng-Guo Xu
Nephrotoxicity has long been the most severe and life-threatening side-effect of cisplatin, whose anticancer effect is therefore restricted. Previous pathological studies have shown that both renal cortex and medulla could be injured by cisplatin. Our TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling) assay results further uncovered that medulla subjected more severe injury than cortex. In order to depict the underlying metabolic mechanism of spatial difference in response to cisplatin, in the present study, mass spectrometry-based untargeted metabolomics approach was applied to profile renal cortex and medulla metabolites of rat after receiving a single dose of cisplatin (2...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28296430/successful-use-of-sertindole-for-severe-behavioral-dyscontrol-in-a-pediatric-case-of-syndromic-autism-spectrum-disorder
#13
Ahmed Naguy
Autism spectrum disorder (ASD) is commonly associated with a host of challenging behaviors. Pharmacotherapy is indicated if psychosocial and educational interventions fail. Atypical antipsychotics have the strongest evidence base so far, with both risperidone and aripiprazole being FDA approved. Unfortunately, their use is fraught with metabolic and neurohormonal side effects. In this study, the author is reporting on a case of syndromic ASD/moderate intellectual disability with severe behavioral component that failed multiple psychotropic trials and ultimately responded dramatically to sertindole...
March 15, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/28295777/can-ldl-cholesterol-be-too-low-possible-risks-of-extremely-low-levels
#14
Anders G Olsson, Bo Angelin, Gerd Assmann, Christoph J Binder, Ingemar Björkhem, Angel Cedazo-Minguez, Jonathan Cohen, Arnold von Eckardstein, Eduardo Farinaro, Dirk Müller-Wieland, Klaus G Parhofer, Paolo Parini, Robert S Rosenson, Jakob Starup-Linde, Matti J Tikkanen, Laurent Yvan-Charvet
Following the continuous accumulation of evidence supporting the beneficial role of reducing low-density lipoprotein cholesterol (LDL-C) levels in the treatment and prevention of atherosclerotic cardiovascular disease and its complications, therapeutic possibilities now exist to lower LDL-C to very low levels, similar to or even lower than those seen in newborns and nonhuman species. In addition to the important task of evaluating potential side-effects of such treatments, the question arises whether extremely low LDL-C levels per se may provoke adverse effects in humans...
March 14, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28294512/hfe-mutations-and-iron-in-hemodialysis-patients
#15
Luca Valenti, Serena Pelusi
INTRODUCTION: in chronic hemodialysis patients, a disruption in iron metabolism ranging from absolute to functional deficiency, with compartmentalization of this metal into macrophages, is often observed. Chronic inflammation indeed often causes an upregulation of the iron hormone hepcidin, thereby reducing iron absorption and availability to the erythron. METHODS: we systematically reviewed the literature on the role of genetic risk factors on iron metabolism in hemodialysis...
March 15, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28293101/new-developments-in-the-management-of-partial-onset-epilepsy-role-of-brivaracetam
#16
REVIEW
Giangennaro Coppola, Giulia Iapadre, Francesca Felicia Operto, Alberto Verrotti
Currently, a number of novel anticonvulsant drugs, the so-called third generation, are in various stages of development. Several of them are already available or in ongoing clinical trials. These new compounds should take advantage of new insights into the basic pathophysiology of epileptogenesis, drug metabolism and drug interactions. Many of them still need to be further evaluated mainly in real-world observational trials and registries. Among newer anticonvulsant drugs for partial-onset seizures (POSs), rufinamide, lacosamide, eslicarbazepine and perampanel are those new treatment options for which more substantial clinical evidence is currently available, both in adults and, to some extent, in children...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28291301/-acute-dystonia-due-to-aripiprazole-use-in-two-children-with-autism-spectrum-disorder-in-the-first-five-years-of-life
#17
Mustafa Küçükköse, Bürge Kabukçu Başay
Autism spectrum disorders (ASD) are neuropsychiatric disorders characterized by impairment in social interactions, in verbal and non-verbal communication, and restricted and stereotyped patterns of interest and behavior within the first 3 years of life. Pharmacologic interventions may be needed for the treatment of temper tantrums, aggression, hyperactivity, and stereotypes in children with ASD. The approval of aripiprazole by the United States Food and Drug Administration (USFDA) for the treatment of temper tantrums in children and adolescents with ASD has gained increased interest for the use in these patients...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
https://www.readbyqxmd.com/read/28289910/acid-base-disturbances-in-nephrotic-syndrome-analysis-using-the-co2-hco3-method-traditional-boston-model-and-the-physicochemical-method-stewart-model
#18
Tomomichi Kasagi, Hirokazu Imai, Naoto Miura, Keisuke Suzuki, Masabumi Yoshino, Hironobu Nobata, Takuhito Nagai, Shogo Banno
BACKGROUND: The Stewart model for analyzing acid-base disturbances emphasizes serum albumin levels, which are ignored in the traditional Boston model. We compared data derived using the Stewart model to those using the Boston model in patients with nephrotic syndrome. METHODS: Twenty-nine patients with nephrotic syndrome and six patients without urinary protein or acid-base disturbances provided blood and urine samples for analysis that included routine biochemical and arterial blood gas tests, plasma renin activity, and aldosterone...
March 13, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28281142/role-of-dna-methylation-in-imprinting-disorders-an-updated-review
#19
REVIEW
Amr Rafat Elhamamsy
Genomic imprinting is a complex epigenetic process that contributes substantially to embryogenesis, reproduction, and gametogenesis. Only small fraction of genes within the whole genome undergoes imprinting. Imprinted genes are expressed in a monoallelic parent-of-origin-specific manner, which means that only one of the two inherited alleles is expressed either from the paternal or maternal side. Imprinted genes are typically arranged in clusters controlled by differentially methylated regions or imprinting control regions...
March 9, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28280467/network-pharmacology-studies-on-the-bioactive-compounds-and-action-mechanisms-of-natural-products-for-the-treatment-of-diabetes-mellitus-a-review
#20
REVIEW
Weiwei Li, Guoqi Yuan, Yuxiang Pan, Cong Wang, Haixia Chen
Diabetes mellitus (DM) is a kind of chronic and metabolic disease, which can cause a number of diseases and severe complications. Network pharmacology approach is introduced to study DM, which can combine the drugs, target proteins and disease and form drug-target-disease networks. Network pharmacology has been widely used in the studies of the bioactive compounds and action mechanisms of natural products for the treatment of DM due to the multi-components, multi-targets, and lower side effects. This review provides a balanced and comprehensive summary on network pharmacology from current studies, highlighting different bioactive constituents, related databases and applications in the investigations on the treatment of DM especially type 2...
2017: Frontiers in Pharmacology
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