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https://www.readbyqxmd.com/read/28339063/viral-and-host-factors-associated-with-outcomes-of-hepatitis-c-virus-infection-review
#1
Zehui Yan, Yuming Wang
Hepatitis C virus (HCV) infection is a major health issue globally. Owing to the progress made in host genetics and HCV molecular virology, emerging data have suggested that the natural course and treatment response in patients with HCV infection are largely determined by complex host‑viral interactions. HCV genotype is the most important viral factor predicting the response to pegylated interferon‑α plus ribavirin therapy. The subtype of HCV genotype 1 is the key viral factor that predicts the efficacy of direct‑acting antiviral therapy...
March 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28334417/pharmacovigilance-database-search-discloses-clc-k-channels-as-a-novel-target-of-the-at1-receptor-blockers-valsartan-and-olmesartan
#2
Paola Imbrici, Domenico Tricarico, Giuseppe Felice Mangiatordi, Orazio Nicolotti, Marcello Diego Lograno, Diana Conte, Antonella Liantonio
BACKGROUND AND PURPOSE: Human ClC-K chloride channels are highly attractive targets for drug discovery for their physiological role and association with genetic disorders. These channels are pivotal in the kidney as they control chloride reabsorption and water diuresis. In addition, loss-of-function mutations of CLCKNB and BSND genes cause Bartter's syndrome (BS), whereas CLCNKA and CLCKNB gain-of-function polymorphisms predispose to a rare form of salt sensitive hypertension. Both disorders lack a personalized therapy that is in most cases only symptomatic...
March 23, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28333298/occurrence-and-molecular-characteristics-of-esbl-ampc-producing-escherichia-coli-in-faecal-samples-from-horses-in-an-equine-clinic
#3
Ilias Apostolakos, Eelco Franz, Angela H A M van Hoek, Alice Florijn, Christiaan Veenman, Marianne M Sloet-van Oldruitenborgh-Oosterbaan, Cindy Dierikx, Engeline van Duijkeren
Objectives: To investigate the occurrence and characteristics of ESBL/AmpC-producing Escherichia coli in faecal samples from horses at one equine clinic in the Netherlands. Methods: A total of 91 horses, including residents and patients, were sampled. ESBL/AmpC-producing E. coli were identified by a combination disc diffusion test. Phylogenetic groups and MLST were determined. ESBL/AmpC genes were analysed using PCR and sequencing. Plasmids were characterized by transformation and PCR-based replicon typing...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28330178/emergence-of-mixed-infection-of-beijing-non-beijing-strains-among-multi-drug-resistant-mycobacterium-tuberculosis-in-pakistan
#4
Samar Mustafa, Hasnain Javed, Jawairia Hashmi, Nazia Jamil, Zarfishan Tahir, Abdul Majeed Akhtar
Tuberculosis (TB) remains as one of the deadliest diseases after HIV globally with 95 % of deaths confined to low-and-middle income countries. Pakistan is fifth among the 22 high-burden TB countries with the incidence rate of 230/100,000 persons, however, studies related to prevalent Mycobacterium tuberculosis strains and their spread, drug resistance pattern and evolutionary genetics are inadequate. The present study was undertaken to highlight the circulation of M. tuberculosis strains causing drug resistant TB in our community by targeting the molecular marker IS6110 and then characterization of these strains as Beijing and Non-Beijing genotypes...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28322279/pluripotent-stem-cells-in-neuropsychiatric-disorders
#5
REVIEW
M A Soliman, F Aboharb, N Zeltner, L Studer
Neuropsychiatric disorders place an enormous medical burden on patients across all social and economic ranks. The current understanding of the molecular and cellular causes of neuropsychiatric disease remains limited, which leads to a lack of targeted therapies. Human-induced pluripotent stem cell (iPSC) technology offers a novel platform for modeling the genetic contribution to mental disorders and yields access to patient-specific cells for drug discovery and personalized medicine. Here, we review recent progress in using iPSC technology to model and potentially treat neuropsychiatric disorders by focusing on the most prevalent conditions in psychiatry, including depression, anxiety disorders, bipolar disorder and schizophrenia...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28316112/molecular-ecology-studies-of-species-radiations-current-research-gaps-opportunities-and-challenges
#6
Marylaure de la Harpe, Margot Paris, Dirk N Karger, Jonathan Rolland, Michael Kessler, Nicolas Salamin, Christian Lexer
Understanding the drivers and limits of species radiations is a crucial goal of evolutionary genetics and molecular ecology, yet research on this topic has been hampered by the notorious difficulty of connecting micro- and macro-evolutionary approaches to studying the drivers of diversification. To chart the current research gaps, opportunities, and challenges of molecular ecology approaches to studying radiations, we examine the literature in the journal Molecular Ecology and re-visit recent high-profile examples of evolutionary genomic research on radiations...
March 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28315377/patient-derived-xenografts-a-platform-for-accelerating-translational-research-in-prostate-cancer
#7
Alastair H Davies, Yuzhuo Wang, Amina Zoubeidi
Recently, there has been renewed interest in the development and characterization of patient-derived tumour xenograft (PDX) models. Numerous PDX models have been established for prostate cancer and, importantly, retain the principal molecular, genetic, and histological characteristics of the donor tumour. As such, these models provide significant improvements over standard cell line xenograft models for biological studies, preclinical drug development, and personalized medicine strategies. This review summarizes the current state of the art in this field, illustrating the opportunities and limitations of PDX models in translational prostate cancer research...
March 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28314689/dna-methylation-based-classification-and-grading-system-for-meningioma-a-multicentre-retrospective-analysis
#8
Felix Sahm, Daniel Schrimpf, Damian Stichel, David T W Jones, Thomas Hielscher, Sebastian Schefzyk, Konstantin Okonechnikov, Christian Koelsche, David E Reuss, David Capper, Dominik Sturm, Hans-Georg Wirsching, Anna Sophie Berghoff, Peter Baumgarten, Annekathrin Kratz, Kristin Huang, Annika K Wefers, Volker Hovestadt, Martin Sill, Hayley P Ellis, Kathreena M Kurian, Ali Fuat Okuducu, Christine Jungk, Katharina Drueschler, Matthias Schick, Melanie Bewerunge-Hudler, Christian Mawrin, Marcel Seiz-Rosenhagen, Ralf Ketter, Matthias Simon, Manfred Westphal, Katrin Lamszus, Albert Becker, Arend Koch, Jens Schittenhelm, Elisabeth J Rushing, V Peter Collins, Stefanie Brehmer, Lukas Chavez, Michael Platten, Daniel Hänggi, Andreas Unterberg, Werner Paulus, Wolfgang Wick, Stefan M Pfister, Michel Mittelbronn, Matthias Preusser, Christel Herold-Mende, Michael Weller, Andreas von Deimling
BACKGROUND: The WHO classification of brain tumours describes 15 subtypes of meningioma. Nine of these subtypes are allotted to WHO grade I, and three each to grade II and grade III. Grading is based solely on histology, with an absence of molecular markers. Although the existing classification and grading approach is of prognostic value, it harbours shortcomings such as ill-defined parameters for subtypes and grading criteria prone to arbitrary judgment. In this study, we aimed for a comprehensive characterisation of the entire molecular genetic landscape of meningioma to identify biologically and clinically relevant subgroups...
March 14, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28302680/genomic-and-epigenomic-heterogeneity-of-hepatocellular-carcinoma
#9
De-Chen Lin, Anand Mayakonda, Huy Q Dinh, Pinbo Huang, Lehang Lin, Xiaoping Liu, Ling-Wen Ding, Jie Wang, Benjamin Berman, Erwei Song, Dong Yin, H Phillip Koeffler
Understanding the intratumoral heterogeneity of hepatocellular carcinoma (HCC) is instructive for developing personalized therapy and identifying molecular biomarkers. Here we applied whole-exome sequencing to 69 samples from 11 patients to resolve the genetic architecture of subclonal diversification. Spatial genomic diversity was found in all 11 HCC cases, with 29% of driver mutations being heterogeneous, including TERT, ARID1A, NOTCH2, and STAG2. Similar with other cancer types, TP53 mutations were always shared between all tumor regions i...
February 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28297622/clinical-trials-in-the-genomic-era
#10
Erel Joffe, Alexia Iasonos, Anas Younes
Personalization of therapy to target specific molecular pathways has been placed in the forefront of cancer research. Initial reports from clinical trials designed to select patients for appropriate treatment on the basis of tumor characteristics not only have generated considerable excitement but also have identified several challenges. These challenges include the overcoming of regulatory and logistic difficulties, identification of the best selection biomarkers and diagnostic platforms that can be applied in the clinical setting, definition of relevant outcomes in small preselected patient populations, and the design of methods that facilitate rapid enrollment and interpretation of clinical trials by aggregating data across histologically diverse malignancies with common genetic alterations...
March 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28288474/cholangiocellular-carcinoma
#11
Arndt Vogel, Anna Saborowski
BACKGROUND: Cholangiocarcinomas (CCAs) are aggressive malignancies that display features of biliary differentiation. According to their anatomical location, CCAs are commonly classified as intrahepatic and extrahepatic tumors, the latter entity being further subdivided into perihilar CCAs, also termed as Klatskin tumors, and distal tumors. While a majority of CCAs occur sporadically, established risk factors such as liver fluke infestation or primary sclerosing cholangitis exist. SUMMARY: Due to lack of efficient early screening markers, CCAs are frequently diagnosed at an advanced stage when curative surgical resection is not an option...
March 14, 2017: Digestion
https://www.readbyqxmd.com/read/28283005/-comparison-of-maldi-tof-and-16s-rrna-methods-in-identification-of-viridans-group-streptococci
#12
Serap Süzük Yıldız, Banu Kaşkatepe, Salih Altınok, Mustafa Çetin, Alper Karagöz, Sümeyra Savaş
Accurate identification of viridans group streptococci (VGS) frequently encountered as a causative agent of infective endocarditis is always a challenge for the clinical microbiology laboratory. Clinical microbiology laboratories generally use semi automatic/full automatic systems, molecular methods and also conventional methods for the identification of these bacteria. There are recent published studies that have used MALDI-TOF (Matrix Assisted Laser Ionization Mass Spectrometry-Time of Flight) systems in the identification of VGS...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28282875/a-perspective-on-ovarian-cancer-biomarkers-past-present-and-yet-to-come
#13
Frederick R Ueland
The history of biomarkers and ultrasonography dates back over more than 50 years. The present status of biomarkers used in the context of ovarian cancer is addressed. Attention is given to new interpretations of the etiology of ovarian cancer. Cancer antigen 125 (CA125) and multivariate index assays (Ova1, Risk of Ovarian Malignancy Algorithm, Overa) are biomarker-driven considerations that are presented. Integration of biomarkers into ovarian cancer diagnostics and screening are presented in conjunction with ultrasound...
March 8, 2017: Diagnostics
https://www.readbyqxmd.com/read/28282720/precision-medicine-approach-to-anaplastic-thyroid-cancer-advances-in-targeted-drug-therapy-based-on-specific-signaling-pathways
#14
Hilda Samimi, Parviz Fallah, Alireza Naderi Sohi, Rezvan Tavakoli, Mahmood Naderi, Masoud Soleimani, Bagher Larijani, Vahid Haghpanah
Personalized medicine is a set of diagnostic, prognostic and therapeutic approaches in which medical interventions are carried out based on individual patient characteristics. As life expectancy increases in developed and developing countries, the incidence of diseases such as cancer goes up among people in the community. Cancer is a disease that the response to treatment varies from one person to another and also it is costly for individuals, families, and society. Among thyroid cancers, anaplastic thyroid carcinoma (ATC) is the most aggressive, lethal and unresponsive form of the disease...
March 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28281147/molecular-tumor-boards-ethical-issues-in-the-new-era-of-data-medicine
#15
Henri-Corto Stoeklé, Marie-France Mamzer-Bruneel, Charles-Henry Frouart, Christophe Le Tourneau, Pierre Laurent-Puig, Guillaume Vogt, Christian Hervé
The practice and development of modern medicine requires large amounts of data, particularly in the domain of cancer. The future of personalized medicine lies neither with "genomic medicine" nor with "precision medicine", but with "data medicine" (DM) (big data, data mining). The establishment of this DM has required far-reaching changes, to establish four essential elements connecting patients and doctors: biobanks, databases, bioinformatic platforms and genomic platforms. The "transformation" of scientific research areas, such as genetics, bioinformatics and biostatistics, into clinical specialties has generated a new vision of care...
March 9, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28280984/treatment-of-lung-adenocarcinoma-by-molecular-targeted-therapy-and-immunotherapy
#16
REVIEW
Motonobu Saito, Hiroyuki Suzuki, Koji Kono, Seiichi Takenoshita, Takashi Kohno
Lung adenocarcinoma (LADC) is a cancer treatable using targeted therapies against driver gene aberrations. EGFR mutations and ALK fusions are frequent gene aberrations in LADC, and personalized therapies against those aberrations have become a standard therapy. These targeted therapies have shown significant positive efficacy and tolerable toxicity compared to conventional chemotherapy, so it is necessary to identify additional druggable genetic aberrations. Other than EGFR mutations and ALK fusions, mutations in KRAS, HER2, and BRAF, and driver fusions involving RET and ROS1, have also been identified in LADC...
March 9, 2017: Surgery Today
https://www.readbyqxmd.com/read/28276633/public-health-and-precision-medicine-share-a-goal
#17
Asokan G Vaithinathan, Vanitha Asokan
The advances made in genomics and molecular tools aid public health programs in the investigation of outbreaks and control of diseases by taking advantage of the precision medicine. Precision medicine means "segregating the individuals into subpopulations who vary in their disease susceptibility and response to a precise treatment" and not merely designing of drugs or creation of medical devices. By 2017, the United Kingdom 100,000 Genomes Project is expected to sequence 100,000 genomes from 70,000 patients...
December 16, 2016: Journal of Evidence-based Medicine
https://www.readbyqxmd.com/read/28274167/an-update-on-the-molecular-diagnosis-of-congenital-heart-disease-focus-on-loss-of-function-mutations
#18
Yan-Jie Li, Yi-Qing Yang
Congenital heart disease (CHD) is the most common birth defect in humans. In spite of tremendous advance in medical care, CHD is still a major contributor to substantial morbidity and mortality. Aggregating evidence demonstrates that genetic defects play a pivotal role in the pathogenesis of CHD, and an increasing number of genetic mutations have been identified to be responsible for CHD. Areas covered: This paper is restricted to the molecular diagnosis of CHD, and highlights loss-of-function mutations in the genes associated with CHD...
March 8, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28272214/genetic-characterization-drives-personalized-therapy-for-early-stage-non-small-cell-lung-cancer-nsclc-patients-and-survivors-with-metachronous-second-primary-tumor-mst-a-case-report
#19
Xingchen Ding, Linlin Wang, Xijun Liu, Xindong Sun, Jinming Yu, Xue Meng
RATIONALE: The pathogenesis and progression of lung cancer is a complicated process in which many genes take part. But molecular gene testing is typically only performed in advanced-stage non-squamous non-small-cell lung cancer (NSCLC). The value of tyrosine kinase inhibitors (TKI) administration is not widely recognized with respect to early-stage NSCLC. PATIENT CONCERNS: Here, we present a case of a man, heavy smoker who initially presented with stage IA lung adenocarcinoma (LADC)...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28269984/5-ht-receptor-nomenclature-naming-names-does-it-matter-a-tribute-to-maurice-rapport
#20
Daniel Hoyer
The naming of 5-HT receptors has been challenging, especially in the early days when the concept of multiple receptors for a single neurotransmitter was considered to be unrealistic at best. Yet pharmacological (rank orders of potency in functional or biochemical settings) and transductional evidence (second messengers, electrophysiology) clearly indicated the existence of receptor families and subfamilies. The genetic revolution, with the cloning and study of recombinantly expressed receptors, and eventually the cloning of the human and other genomes have made such reservations obsolete...
March 24, 2017: ACS Chemical Neuroscience
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