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https://www.readbyqxmd.com/read/29677645/autophagy-as-a-cytoprotective-mechanism-in-esophageal-squamous-cell-carcinoma
#1
REVIEW
Timothy M Hall, Marie-Pier Tétreault, Kathryn E Hamilton, Kelly A Whelan
Esophageal squamous cell carcinoma (ESCC) is amongst the most aggressive human malignancies, representing a significant health burden worldwide. Autophagy is an evolutionarily conserved catabolic process that degrades and recycles damaged organelles and misfolded proteins to maintain cellular homeostasis. Alterations in autophagy are associated with cancer pathogenesis, including ESCC; however, the functional role of autophagy in ESCC remains elusive. Here, we discuss the clinical relevance of autophagy effectors in ESCC and review current knowledge regarding the molecular mechanisms through which autophagy contributes to ESCC...
April 17, 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29677628/circulating-metabolomic-profile-can-predict-dyslipidemia-in-hiv-patients-undergoing-antiretroviral-therapy
#2
Esther Rodríguez-Gallego, Josep Gómez, Pere Domingo, Sara Ferrando-Martínez, Joaquim Peraire, Consuelo Viladés, Sergi Veloso, Miguel López-Dupla, Raúl Beltrán-Debón, Verónica Alba, Montserrat Vargas, Alfonso J Castellano, Manuel Leal, Yolanda María Pacheco, Ezequiel Ruiz-Mateos, Félix Gutiérrez, Francesc Vidal, Anna Rull
BACKGROUND AND AIMS: Dyslipidemia in HIV-infected patients is unique and pathophysiologically associated with host factors, HIV itself and the use of antiretroviral therapy (ART). The use of nuclear magnetic resonance spectroscopy (NMR) provides additional data to conventional lipid measurements concerning the number of lipoprotein subclasses and particle sizes. METHODS: To investigate the ability of lipoprotein profile, we used a circulating metabolomic approach in a cohort of 103 ART-naive HIV-infected patients, who were initiating non-nucleoside analogue transcriptase inhibitor (NNRTI)-based ART, and we subsequently followed up these patients for 36 months...
April 9, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29677597/the-systematic-evaluation-of-size-dependent-toxicity-and-multi-time-biodistribution-of-gold-nanoparticles
#3
Xiaomin Li, Zhenpeng Hu, Jinlong Ma, Xinyu Wang, Yapei Zhang, Wei Wang, Zhi Yuan
As a promising nanomaterial, gold nanoparticles (Au NPs) have been widely applied in diagnosis, drug and gene delivery, and photothermal therapy. However, the toxicity and biodistribution profile of differently sized Au NPs still remains controversial and incomplete, thus hindering their further applications. Herein, a systematic evaluation of size effect on toxicity and multi-time (from 4 h to 90 days) biodistribution of Au NPs ranging from 6.2 nm to 61.2 nm was conducted. The in vitro toxicity by MTT assays manifested that toxicity could be distinctly observed and increased with size decreasing when the dose of Au NPs reached up to a certain amount (1 mM)...
April 4, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29677569/validation-of-the-ajcc-8th-prognostic-system-for-breast-cancer-in-an-asian-healthcare-setting
#4
R X Wong, F Y Wong, John Lim, W X Lian, Y S Yap
AIMS: We aim to validate the AJCC 8th edition prognostic staging system for breast cancer in an Asian setting. METHODS: Clinico-pathologic information and cancer-specific survival (CSS) outcomes of 6287 stage I to III patients with invasive breast cancer who underwent upfront surgery at SingHealth institutions in Singapore from 2006 to 2014 were analyzed. Survival distributions for the different staging systems were estimated by the Kaplan-Meier method and compared using the log-rank tests...
April 17, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29677568/validation-of-the-cps-eg-and-neo-bioscore-staging-systems-after-preoperative-systemic-therapy-for-breast-cancer-in-a-single-center-in-china
#5
Ling Xu, Xuening Duan, Bin Zhou, Yinhua Liu, Jingming Ye, Zhaorui Liu, Chao Ma, Hong Zhang, Shuang Zhang, Lanbo Zhang, Jianxin Zhao, Yuanjia Cheng
BACKGROUND: Prognostic assessment after preoperative systemic therapy (PST) plays a vital role in determining treatment in breast cancer patients. Many researchers have sought to develop a system to quantitate residual tumor and its correlation with prognosis after PST. This retrospective study validated the CPS + EG staging system and Neo-Bioscore in a single center in China. METHODS: Data from patients with non-metastatic primary breast cancer who were treated with PST and surgery from Jan...
April 17, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29677537/the-rescue-effect-of-mesenchymal-stem-cell-on-sodium-iodate-induced-retinal-pigment-epithelial-cell-death-through-deactivation-of-nf-%C3%AE%C2%BAb-mediated-nlrp3-inflammasome
#6
Xiying Mao, Ting Pan, Han Shen, Huiyu Xi, Songtao Yuan, Qinghuai Liu
Age-related macular degeneration (AMD) is a multifactorial disease resulting in the gradual loss of retinal pigment epithelium (RPE) and the permanent visual damage. Various risk factors, including oxidative stress, form a complex network at the confluence of inflammation. Mesenchymal stem cell (MSC) is a well-studied population of adult stem cell with strong neuroprotective and immunoregulatory properties. Here, we reported the protective effect of MSC on sodium iodate (NaIO3)-triggered RPE degeneration. Sodium iodate (NaIO3)-induced RPE cell death was remarkably reduced when cocultured with MSC...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677534/punicalagin-induces-senescent-growth-arrest-in-human-papillary-thyroid-carcinoma-bcpap-cells-via-nf-%C3%AE%C2%BAb-signaling-pathway
#7
Xian Cheng, Xin Yao, Shichen Xu, Jie Pan, Huixin Yu, Jiandong Bao, Haixia Guan, Rongrong Lu, Li Zhang
Papillary thyroid carcinoma (PTC) is the most common endocrine carcinoma. Our previous study revealed that punicalagin (PUN), an active component from pomegranate, triggered autophagic cell death and DNA damage response (DDR) in papillary thyroid carcinoma BCPAP cells. But the detailed anti-cancer mechanisms of punicalagin against PTC still remained to be further explored. DDR activation is a proven cause of cellular senescence, which mediates anti-tumor processes under certain circumstances. In this study, we reported that punicalagin treatment generated a senescent phenotype of BCPAP cells characterized as altered morphology, increased cell granularity and senescence-associated β-galactosidase (SA-β-Gal) staining...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677520/stable-black-phosphorus-bi-2-o-3-heterostructures-for-synergistic-cancer-radiotherapy
#8
Hao Huang, Lizhen He, Wenhua Zhou, Guangbo Qu, Jiahong Wang, Na Yang, Jie Gao, Tianfeng Chen, Paul K Chu, Xue-Feng Yu
X-ray induced photodynamic therapy (X-ray-PDT) is a promising approach for synergistic cancer radiotherapy and development of suitable radiosensitizers is highly desired. In this paper, we propose black phosphorus/Bi2 O3 (BP/Bi2 O3 ) heterostructures as efficient and biocompatible radiosensitizers for synergistic cancer radiotherapy. The heterostructures are synthesized by growth of ultrasmall Bi2 O3 nanoparticles onto BP nanosheets. The Bi2 O3 decoration inhibits the rapid degradation of BP nanosheets by occupation of the defect sites, and the synergistic effects of BP and Bi2 O3 enable 1 O2 overproduction under X-ray irradiation...
April 13, 2018: Biomaterials
https://www.readbyqxmd.com/read/29677491/the-allergen-der-p3-from-house-dust-mite-stimulates-store-operated-ca-2-channels-and-mast-cell-migration-through-par4-receptors
#9
Yu-Ping Lin, Charmaine Nelson, Holger Kramer, Anant B Parekh
The house dust mite is the principal source of perennial aeroallergens in man. How these allergens activate innate and adaptive immunity is unclear, and therefore, there are no therapies targeting mite allergens. Here, we show that house dust mite extract activates store-operated Ca2+ channels, a common signaling module in numerous cell types in the lung. Activation of channel pore-forming Orai1 subunits by mite extract requires gating by STIM1 proteins. Although mite extract stimulates both protease-activated receptor type 2 (PAR2) and PAR4 receptors, Ca2+ influx is more tightly coupled to the PAR4 pathway...
April 19, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29677483/design-synthesis-and-biological-evaluation-of-pyrimidine-based-derivatives-as-vegfr-2-tyrosine-kinase-inhibitors
#10
Wuji Sun, Shengquan Hu, Shubiao Fang, Hong Yan
Vascular endothelial growth factor receptor-2 (VEGFR-2) plays a crucial role in tumor angiogenesis, and inhibition of the VEGFR-2 signaling pathway has already become an attractive approach for cancer therapy. In this study, a novel pyrimidine-based derivative 7j was designed as lead compound, and three series of potent VEGFR-2 inhibitors were synthesized and biologically evaluated against A549 and HepG2 cell lines. Compounds 7d, 9s and 13n exhibited superior inhibitory activities against A549 cell with IC50 ranged from 9...
April 13, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29677482/allosteric-ligands-for-the-pharmacologically-important-flavivirus-target-ns5-from-zinc-database-based-on-pharmacophoric-points-free-energy-calculations-and-dynamics-correlation
#11
Abbas Khan, Shoaib Saleem, Muhammad Idrees, Syed Shujait Ali, Muhammad Junaid, Aman Chandra Kaushik, Dong-Qing Wei
Dengue virus belongs to a group of human pathogens, which causes different diseases, dengue hemorrhagic fever and dengue shock syndrome in humans. It possesses RNA as a genetic material and is replicated with the aid of NS5 protein. RNA-dependent RNA polymerase (RdRp) is an important domain of NS5 in the replication of that virus. The catalytic process activity of RdRp is making it an important target for antiviral chemical therapy. To date, No FDA drug has been approved and marketed for the treatment of diseases caused by Dengue virus...
April 11, 2018: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29677472/translating-immunology-into-therapeutic-concepts-for-inflammatory-bowel-disease
#12
Holm H Uhlig, Fiona Powrie
Inflammatory bowel disease (IBD) defines a spectrum of complex disorders. Understanding how environmental risk factors, alterations of the intestinal microbiota, and polygenetic and epigenetic susceptibility impact on immune pathways is key for developing targeted therapies. Mechanistic understanding of polygenic IBD is complemented by Mendelian disorders that present with IBD, pharmacological interventions that cause colitis, autoimmunity, and multiple animal models. Collectively, this multifactorial pathogenesis supports a concept of immune checkpoints that control microbial-host interactions in the gut by modulating innate and adaptive immunity, as well as epithelial and mesenchymal cell responses...
April 26, 2018: Annual Review of Immunology
https://www.readbyqxmd.com/read/29677454/combined-but-not-the-single-administration-of-vitamin-c-and-l-carnitine-ameliorates-cisplatin-induced-gastric-mucosa-damage-in-male-rats
#13
Modinat Adebukola Adefisayo, Wale Johnson Adeyemi, Quadri Kunle Alabi
Although cisplatin is a potent anticancer drug, it instigates oxidative and pro-inflammatory reactions which poses significant and distressing clinical symptoms in patients including nausea and vomiting which is related to damage of the gastric mucosa. This study investigated the effects of vitamin C and/or L-carnitine on cisplatin-induced gastric mucosa damage in rat. The rats were allocated into groups (n=5): a control group received distilled water and treatment groups received cisplatin (CIP) alone, cisplatin followed by vitamin C, L-carnitine or their combination...
April 20, 2018: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/29677451/treatment-features-associated-with-youth-cognitive-behavioral-therapy-follow-up-effects-for-internalizing-disorders-a-meta-analysis
#14
Michael Sun, Leslie R Rith-Najarian, Timothy J Williamson, Bruce F Chorpita
Our aim was to investigate whether four treatment features (i.e., the inclusion of parental involvement, goal-setting strategies, maintenance/relapse prevention sessions, the addition of booster sessions) were associated with posttreatment and follow-up effect size of youth cognitive behavioral therapies (yCBTs) for anxiety, depression, posttraumatic stress disorder, and obsessive-compulsive disorder in age groups spanning young children to adolescents. We conducted a random-effects meta-analysis of 106 yCBTs tested in 76 randomized clinical trials from the PracticeWise Database to examine average effects of yCBTs posttreatment and at a later follow-up assessment...
April 20, 2018: Journal of Clinical Child and Adolescent Psychology
https://www.readbyqxmd.com/read/29677444/disassembly-of-hydrophobic-photosensitizer-by-bio-degradable-zeolitic-imidazolate-framework-8-for-photodynamic-cancer-therapy
#15
Dandan Xu, Yongqiang You, Fanyu Zeng, Yong Wang, Chunyan Liang, Huanhuan Feng, Xing Ma
Photodynamic therapy (PDT), an alternative to conventional cancer therapeutics, has gained increasingly attentions for its non-invasive advantages and simultaneously fluorescence imaging property. PDT is a tripartite process that functions in simultaneous presence of a photosensitizer (PS), light and available oxygen molecules. However, many highly efficient PSs are hydrophobic and easily self-aggregate in aqueous solution, leading to quickly quenching of PDT effect. Here we construct zeolitic imidazolate framework-8 (ZIF-8) containing water insoluble photosensitizer zinc(II) phthalocyanine (ZnPc), a typical hydrophobic PS, by one-step coprecipitation process, named as ZnPc@ZIF-8...
April 20, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29677408/use-of-oxygen-at-the-end-of-life-attitudes-beliefs-and-practices-in-wisconsin
#16
Lisa Quinn-Lee, Jeanne Weggel, Susan D Moch
INTRODUCTION: Oxygen therapy for the management of breathlessness remains controversial and little information is available regarding the practice of using oxygen at end of life. Oxygen use in end-of-life care is increasingly being questioned, while the use of oxygen for routine "comfort care" at end of life continues. OBJECTIVE: The purpose of this study was to investigate the use of oxygen at the end of life and to understand its role in contemporary palliative care practice...
March 2018: WMJ: Official Publication of the State Medical Society of Wisconsin
https://www.readbyqxmd.com/read/29677399/outcomes-of-cryptococcosis-in-renal-transplant-recipients-in-a-less-resourced-health-care-system
#17
Vinicius Ponzio, Luis F A Camargo, José O Medina-Pestana, John R Perfect, Arnaldo L Colombo
BACKGROUND: Cryptococcosis is the second most common cause of invasive fungal infections in renal transplant recipients in many countries, and data on graft outcome after treatment for this infection is lacking in less-resourced health care settings. METHODS: Data from 47 renal transplant recipients were retrospectively collected at a single institution during a period of 13 years. Graft dysfunction, graft loss and mortality rates were evaluated. Predictors of mortality and graft loss were estimated...
April 20, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29677383/effects-of-inhibitors-on-hsp90-s-conformational-dynamics-cochaperone-and-client-interactions
#18
Sonja Schmid, Markus Goetz, Thorsten Hugel
The molecular chaperone and heat-shock protein Hsp90 has become a central target in anti-cancer therapy. Nevertheless, the effect of Hsp90 inhibition is still not understood at the molecular level, preventing a truly rational drug design. Here we report on the effect of the most prominent drug candidates, namely radicicol, geldanamycin, derivatives of purine and novobiocin, on Hsp90's characteristic conformational dynamics and the binding of three interaction partners. Unexpectedly, the global opening and closing transitions are hardly affected by Hsp90 inhibitors...
April 20, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/29677356/volume-rendered-projection-resolved-oct-angiography-3d-lesion-complexity-is-associated-with-therapy-response-in-wet-age-related-macular-degeneration
#19
Peter L Nesper, Brian T Soetikno, Alison D Treister, Amani A Fawzi
Purpose: To explore whether quantitative three-dimensional (3D) analysis of choroidal neovascularization (CNV) using projection-resolved optical coherence tomography angiography (PR-OCTA) is associated with treatment response in neovascular age-related macular degeneration (nAMD). Methods: Retrospective, cross-sectional study of 51 eyes of 49 patients undergoing individualized anti-VEGF therapy for nAMD. Patients were classified as "good" or "poor" responders, requiring injections at less or more frequently than 6-week intervals, respectively...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29677302/effect-of-uterosacral-ligament-suspension-vs-sacrospinous-ligament-fixation-with-or-without-perioperative-behavioral-therapy-for-pelvic-organ-vaginal-prolapse-on-surgical-outcomes-and-prolapse-symptoms-at-5-years-in-the-optimal-randomized-clinical-trial
#20
J Eric Jelovsek, Matthew D Barber, Linda Brubaker, Peggy Norton, Marie Gantz, Holly E Richter, Alison Weidner, Shawn Menefee, Joseph Schaffer, Norma Pugh, Susan Meikle
Importance: Uterosacral ligament suspension (ULS) and sacrospinous ligament fixation (SSLF) are commonly performed pelvic organ prolapse procedures despite a lack of long-term efficacy data. Objective: To compare outcomes in women randomized to (1) ULS or SSLF and (2) usual care or perioperative behavioral therapy and pelvic floor muscle training (BPMT) for vaginal apical prolapse. Design, Setting, and Participants: This 2 × 2 factorial randomized clinical trial was conducted at 9 US medical centers...
April 17, 2018: JAMA: the Journal of the American Medical Association
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