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https://www.readbyqxmd.com/read/28527407/mechanisms-of-resistance-to-systemic-therapy-in-metastatic-castration-resistant-prostate-cancer
#1
REVIEW
Giuseppe Galletti, Benjamin I Leach, Linda Lam, Scott T Tagawa
Patients with metastatic castration-resistant prostate cancer (mCPRC) now have an unprecedented number of approved treatment options, including chemotherapies (docetaxel, cabazitaxel), androgen receptor (AR)-targeted therapies (enzalutamide, abiraterone), a radioisotope (radium-223) and a cancer vaccine (sipuleucel-T). However, the optimal treatment sequencing pathway is unknown, and this problem is exacerbated by the issues of primary and acquired resistance. This review focuses on mechanisms of resistance to AR-targeted therapies and taxane-based chemotherapy...
May 8, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28527357/functionalization-of-electrospun-polymeric-wound-dressings-with-antimicrobial-peptides
#2
REVIEW
Helena P Felgueiras, M Teresa P Amorim
Wound dressings have evolved considerably since ancient times. Modern dressings are now important systems that combine the physical and biochemical properties of natural and synthetic polymers with active compounds that are beneficial to wound healing. Antimicrobial peptides (AMPs) are the most recent addition to these systems. These aim to control the microbial proliferation and colonization of pathogens and to modulate the host's immune response. In the last decade, electrospun wound dressings have been extensively studied and the electrospinning technique recognized as an efficient approach for the production of nanoscale fibrous mats...
May 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28527343/engineering-genetically-encoded-tools-for-optogenetic-control-of-protein-activity
#3
REVIEW
Qi Liu, Chandra L Tucker
Optogenetic tools offer fast and reversible control of protein activity with subcellular spatial precision. In the past few years, remarkable progress has been made in engineering photoactivatable systems regulating the activity of cellular proteins. In this review, we discuss general strategies in designing and optimizing such optogenetic tools and highlight recent advances in the field, with specific focus on applications regulating protein catalytic activity.
May 17, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28527292/-triatoma-dimidiata-in-colombia-distribution-ecology-and-epidemiological-importance
#4
Óscar Quirós-Gómez, Nicolás Jaramillo, Víctor Angulo, Gabriel Parra-Henao
Triatoma dimidiata is an important vector of Chagas disease in Central America and countries of northern South America. In Colombia, it has a wide geographical distribution with reported presence in 14 departments in the Andean, Caribbean, Eastern plains and Upper Magdalena regions, where it occupies different natural and artificial ecotopes. The species is considered a secondary vector in the transmission of Trypanosoma cruzi. Its presence in wild, peridomestic and intradomiciliary habitats in the Andean region, coupled with its ability to move between them, has allowed it to escape the control based on pyrethroids spraying, highlighting its importance in maintaining transmission of the parasite through the potential reinfestation of homes...
June 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527217/protein-phosphorylation-is-a-key-mechanism-in-alzheimer-s-disease
#5
Joana Oliveira, Márcio Costa, Maria Soares Cachide de Almeida, Odete A B da Cruz E Silva, Ana Gabriela Henriques
Altered protein phosphorylation states of several proteins are closely associated with Alzheimer's disease (AD). Among these are the amyloid-β precursor protein (AβPP) and the tau protein. In fact, altered protein phosphorylation states already provide strong biomarkers for AD diagnosis, as is the case with hyperphosphorylated tau. It follows that modulating signaling cascades provides an attractive avenue for exploring novel therapeutic strategies. This review focuses on some of the major protein kinases and protein phosphatases relevant to AD...
May 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28527212/apolipoprotein-e4-gender-body-mass-index-inflammation-insulin-resistance-and-air-pollution-interactions-recipe-for-alzheimer-s-disease-development-in-mexico-city-young-females
#6
Lilian Calderón-Garcidueñas, Suzanne M de la Monte
Given the epidemiological trends of increasing Alzheimer's disease (AD) and growing evidence that exposure and lifestyle factors contribute to AD risk and pathogenesis, attention should be paid to variables such as air pollution, in order to reduce rates of cognitive decline and dementia. Exposure to fine particulate matter (PM2.5) and ozone (O3) above the US EPA standards is associated with AD risk. Mexico City children experienced pre- and postnatal high exposures to PM2.5, O3, combustion-derived iron-rich nanoparticles, metals, polycyclic aromatic hydrocarbons, and endotoxins...
May 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28527153/the-rise-of-phenology-with-climate-change-an-evaluation-of-ijb-publications
#7
Alison Donnelly, Rong Yu
In recent decades, phenology has become an important tool by which to measure both the impact of climate change on ecosystems and the feedback of ecosystems to the climate system. However, there has been little attempt to date to systematically quantify the increase in the number of scientific publications with a focus on phenology and climate change. In order to partially address this issue, we examined the number of articles (original papers, reviews and short communications) containing the terms 'phenology' and 'climate change' in the title, abstract or keywords, published in the International Journal of Biometeorology in the 60 years since its inception in 1957...
May 19, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28527117/non-viral-and-viral-delivery-systems-for-crispr-cas9-technology-in-the-biomedical-field
#8
REVIEW
Zhi-Yao He, Ke Men, Zhou Qin, Yang Yang, Ting Xu, Yu-Quan Wei
The clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (CRISPR-Cas9) system provides a novel genome editing technology that can precisely target a genomic site to disrupt or repair a specific gene. Some CRISPR-Cas9 systems from different bacteria or artificial variants have been discovered or constructed by biologists, and Cas9 nucleases and single guide RNAs (sgRNA) are the major components of the CRISPR-Cas9 system. These Cas9 systems have been extensively applied for identifying therapeutic targets, identifying gene functions, generating animal models, and developing gene therapies...
May 2, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28527116/genome-editing-in-drosophila-melanogaster-from-basic-genome-engineering-to-the-multipurpose-crispr-cas9-system
#9
REVIEW
Xingjie Ren, Kristof Holsteens, Haiyi Li, Jin Sun, Yifan Zhang, Lu-Ping Liu, Qingfei Liu, Jian-Quan Ni
Nowadays, genome editing tools are indispensable for studying gene function in order to increase our knowledge of biochemical processes and disease mechanisms. The extensive availability of mutagenesis and transgenesis tools make Drosophila melanogaster an excellent model organism for geneticists. Early mutagenesis tools relied on chemical or physical methods, ethyl methane sulfonate (EMS) and X-rays respectively, to randomly alter DNA at a nucleotide or chromosomal level. Since the discovery of transposable elements and the availability of the complete fly genome, specific genome editing tools, such as P-elements, zinc-finger nucleases (ZFNs) and transcription activator-like effector nucleases (TALENs), have undergone rapid development...
May 1, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28527114/current-and-future-editing-reagent-delivery-systems-for-plant-genome-editing
#10
REVIEW
Yidong Ran, Zhen Liang, Caixia Gao
Many genome editing tools have been developed and new ones are anticipated; some have been extensively applied in plant genetics, biotechnology and breeding, especially the CRISPR/Cas9 system. These technologies have opened up a new era for crop improvement due to their precise editing of user-specified sequences related to agronomic traits. In this review, we will focus on an update of recent developments in the methodologies of editing reagent delivery, and consider the pros and cons of current delivery systems...
May 1, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28527054/understanding-migraine-as-a-cycling-brain-syndrome-reviewing-the-evidence-from-functional-imaging
#11
Arne May
Due to the clinical picture and also based on early imaging data (Weiller et al. Nat Med 1:658-660, 1995), the brainstem and midbrain structures have been intensely discussed as possible driving or generating structures in migraine. The fact that the brainstem activation persisted after treatment makes it unlikely that this activation was only due to increased activity of the endogenous anti-nociceptive system. It was consequently (and somewhat simplifying) coined the "migraine generator". Since then several studies have focussed on this region when investigating episodic, but also chronic migraine...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28527017/juxtaglomerular-cell-phenotypic-plasticity
#12
REVIEW
Alexandre Góes Martini, A H Jan Danser
Renin is the first and rate-limiting step of the renin-angiotensin system. The exclusive source of renin in the circulation are the juxtaglomerular cells of the kidney, which line the afferent arterioles at the entrance of the glomeruli. Normally, renin production by these cells suffices to maintain homeostasis. However, under chronic stimulation of renin release, for instance during a low-salt diet or antihypertensive therapy, cells that previously expressed renin during congenital life re-convert to a renin-producing cell phenotype, a phenomenon which is known as "recruitment"...
May 19, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28526962/prediction-of-surgical-outcomes-of-laparoscopic-liver-resections-for-hepatocellular-carcinoma-by-defining-surgical-difficulty
#13
Mohan Periyasamy, Jai Young Cho, Soyeon Ahn, Ho-Seong Han, Yoo-Seok Yoon, YoungRok Choi, Jae Seong Jang, Seong Uk Kwon, Sungho Kim, Jang Kyu Choi, Hanisah Guro
BACKGROUND: Several classification systems for assessing the surgical difficulty of laparoscopic liver resection (LLR) have been proposed. We evaluated three current classification systems, including traditional Major/Minor Classification, Complexity Classification, and the Difficulty Scoring System for predicting the surgical outcomes after LLR. METHODS: We reviewed the clinical data of 301 patients who underwent LLR for hepatocellular carcinoma between March 1, 2004 and June 30, 2015...
May 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28526922/advances-in-systemic-therapy-for-metastatic-breast-cancer-future-perspectives
#14
REVIEW
S P Corona, N Sobhani, A Ianza, G Roviello, G Mustacchi, M Bortul, F Zanconati, D Generali
Breast cancer (BC) is the most common cancer in women worldwide. One in eight women will develop the disease in her lifetime. Notwithstanding the incredible progress made in this field, BC still represents the second most common cause of cancer-related death in women. Targeted drugs have revolutionised breast cancer treatment and improved the prognosis as well as the life expectancy of millions of women. However, the phenomenon of primary and secondary pharmacological resistance is becoming increasingly evident, limiting the efficacy of these agents and calling for a better in-depth knowledge and understanding of the biology as well as the biochemical crosstalk underlying the disease...
July 2017: Medical Oncology
https://www.readbyqxmd.com/read/28526624/guideline-recommendations-on-the-use-of-allergen-immunotherapy-in-house-dust-mite-allergy-time-for-a-change
#15
Moisés A Calderón, Jean Bousquet, G Walter Canonica, Lars-Olaf Cardell, Dolores Hernandez Fernandez de Rojas, Jörg Kleine-Tebbe, Pascal Demoly
Guidelines on the treatment of asthma, allergic rhinitis (AR) and allergen immunotherapy (AIT) lack recommendations for house dust mite (HDM) allergy. An expert panel reviewed current guidelines in the light of new data, to assess whether guidelines could be improved. Most guidelines and key position papers did not provide specific recommendations on treatment of allergic asthma (AA) caused by HDM allergy, although some included AIT as a treatment option for AA in general. Around half of the guidelines stated that AIT with HDM extract was an effective treatment for AR, with several indicating sublingual immunotherapy (SLIT) as an option...
May 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28526578/barrel-cortex-what-is-it-good-for
#16
REVIEW
Maik C Stüttgen, Cornelius Schwarz
The rodent whisker system, with barrel cortex as its most prominent structure, has evolved into a powerful model system to study sensory processing. However, despite the vast amount of data collected on barrel cortex neural activity patterns, as well as its circuitry and plasticity, the precise behavioral and cognitive operations for which this structure is needed are still elusive. Proposed functions of barrel cortex include detection, discrimination, coordination of whisker movements during exploratory locomotion or active touch, and associative learning...
May 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28526570/role-of-medicinal-plants-on-growth-performance-and-immune-status-in-fish
#17
REVIEW
Elham Awad, Amani Awaad
Disease outbreaks increase proportionally with increases in intensive aquaculture. Natural products including medicinal plants have been known from thousands of years for treating some human diseases. It is well known that many active compounds are responsible for potential bio-activities. For that reason, there has been considerable interest in the use of medicinal plants in aquaculture with a view to providing safe and eco-friendly compounds for replacing antibiotics and chemical compounds as well as to enhance immune status and control fish diseases...
May 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28526536/trastuzumab-emtansine-versus-capecitabine-plus-lapatinib-in-patients-with-previously-treated-her2-positive-advanced-breast-cancer-emilia-a-descriptive-analysis-of-final-overall-survival-results-from-a-randomised-open-label-phase-3-trial
#18
Véronique Diéras, David Miles, Sunil Verma, Mark Pegram, Manfred Welslau, José Baselga, Ian E Krop, Kim Blackwell, Silke Hoersch, Jin Xu, Marjorie Green, Luca Gianni
BACKGROUND: The antibody-drug conjugate trastuzumab emtansine is indicated for the treatment of patients with HER2-positive metastatic breast cancer previously treated with trastuzumab and a taxane. Approval of this drug was based on progression-free survival and interim overall survival data from the phase 3 EMILIA study. In this report, we present a descriptive analysis of the final overall survival data from that trial. METHODS: EMILIA was a randomised, international, open-label, phase 3 study of men and women aged 18 years or older with HER2-positive unresectable, locally advanced or metastatic breast cancer previously treated with trastuzumab and a taxane...
May 16, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28526529/adding-biological-meaning-to-human-protein-protein-interactions-identified-by-yeast-two-hybrid-screenings-a-guide-through-bioinformatics-tools
#19
Juliana Felgueiras, Joana Vieira Silva, Margarida Fardilha
"A man is known by the company he keeps" is a popular expression that perfectly fits proteins. A common approach to characterize the function of a target protein is to identify its interacting partners and thus infer its roles based on the known functions of the interactors. Protein-protein interaction networks (PPINs) have been created for several organisms, including humans, primarily as results of high-throughput screenings, such as yeast two-hybrid (Y2H). Their unequivocal use to understand events underlying human pathophysiology is promising in identifying genes and proteins associated with diseases...
May 16, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28526455/comparison-of-3d-and-2d-shear-wave-elastography-for-differentiating-benign-and-malignant-breast-masses-focus-on-the-diagnostic-performance
#20
H Y Choi, Y-M Sohn, M Seo
AIM: To evaluate the diagnostic performance of three-dimensional (3D) image shear-wave elastography (SWE) for differentiating benign from malignant breast masses compared to two-dimensional (2D) SWE and B-mode ultrasound (US). MATERIALS AND METHODS: This study consisted of 205 breast lesions from 199 patients who underwent B-mode US and SWE before biopsy from January 2014 to March 2016. Quantitative elasticity values (maximum and mean elasticity, Emax and Emean) obtained from 2D and 3D SWE (axial, sagittal, and coronal images) were reviewed retrospectively, in addition to the histopathological findings including immunohistochemistry profiles (luminal A, luminal B, human epidermal growth factor receptor 2 (HER2)-enriched, and triple-negative breast cancer) in cases of malignancy...
May 16, 2017: Clinical Radiology
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