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https://www.readbyqxmd.com/read/29039509/evaluation-of-a-novel-dry-eye-model-induced-by-oral-administration-of-finasteride
#1
Kai Li, Chuanwei Zhang, Zichao Yang, Yuliang Wang, Haipeng Si
Dry eye is a common eye disease, and suitable animal models are indispensable for investigating the pathogenesis and developing treatments for dry eye. The present study was conducted to develop an androgen deficiency dry eye model induced by finasteride, and to evaluate ocular surface status and inflammatory cytokine gene expression in the lacrimal gland using a cytokine antibody array system. The results revealed that the antiandrogenic drug finasteride induced significant tear deficiency, and the histopathology results revealed significant inflammatory cell infiltration in the lacrimal gland...
October 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29033832/cyclotides-isolated-from-an-ipecac-root-extract-antagonize-the-corticotropin-releasing-factor-type-1-receptor
#2
Mohsen Fahradpour, Peter Keov, Carlotta Tognola, Estela Perez-Santamarina, Peter J McCormick, Alireza Ghassempour, Christian W Gruber
Cyclotides are plant derived, cystine-knot stabilized peptides characterized by their natural abundance, sequence variability and structural plasticity. They are abundantly expressed in Rubiaceae, Psychotrieae in particular. Previously the cyclotide kalata B7 was identified to modulate the human oxytocin and vasopressin G protein-coupled receptors (GPCRs), providing molecular validation of the plants' uterotonic properties and further establishing cyclotides as valuable source for GPCR ligand design. In this study we screened a cyclotide extract derived from the root powder of the South American medicinal plant ipecac (Carapichea ipecacuanha) for its GPCR modulating activity of the corticotropin-releasing factor type 1 receptor (CRF1R)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28994323/atezolizumab-in-invasive-and-metastatic-urothelial-carcinoma
#3
Michael Crist, Arjun Balar
Until recently, there has been little advancement in the management of invasive and metastatic urothelial cancer in over 30 years, and outcomes with cisplatin-based chemotherapy remain unchanged. Inhibitors targeting PD-1 signaling on cytotoxic T-cells have revolutionized bladder cancer therapy leading to durable responses. Atezolizumab is an engineered humanized anti-PD-L1 monoclonal antibody that inhibits PD-L1 binding to PD-1 and B7.1, enhancing immune-mediated tumor killing and is currently approved as second-line treatment after failure of platinum-based chemotherapy as well as first-line in cisplatin-ineligible patients...
October 10, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28987965/emerging-targets-in-cancer-immunotherapy
#4
REVIEW
Samantha Burugu, Amanda R Dancsok, Torsten O Nielsen
The first generation of immune checkpoint inhibitors (anti-CTLA-4 and anti-PD-1/PD-L1) targeted natural immune homeostasis pathways, co-opted by cancers, to drive anti-tumor immune responses. These agents led to unprecedented results in patients with previously incurable metastatic disease and may become first-line therapies for some advanced cancers. However, these agents are efficacious in only a minority of patients. Newer strategies are becoming available that target additional immunomodulatory mechanisms to activate patients' own anti-tumor immune responses...
October 5, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28985469/programmed-cell-death-protein-ligand-1-silencing-with-polyethylenimine-dermatan-sulfate-complex-for-dual-inhibition-of-melanoma-growth
#5
Gijung Kwak, Dongkyu Kim, Gi-Hoon Nam, Sun Young Wang, In-San Kim, Sun Hwa Kim, Ick-Chan Kwon, Yoon Yeo
Programmed cell death protein-1 (PD-1) is a prominent immune checkpoint receptor interacting with its ligand, programmed cell death protein ligand-1 (PD-L1, B7-H1). The PD-1/PD-L1 interaction induces functional exhaustion of tumor-reactive cytotoxic T cells and, thus, interferes with antitumor T-cell immunity. In addition, PD-1/PD-L1 interaction promotes tumorigenesis via the mTOR signaling pathway in a group of cancers including melanoma. Based on the dual functions of PD-1/PD-L1 interactions in tumor progression, we hypothesize that siRNA targeting PD-L1 (siPD-L1) will suppress melanoma growth, acting on both immune checkpoint and intrinsic tumorigenesis pathways...
October 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/28978159/b7-h4-as-an-independent-prognostic-indicator-of-cancer-patients-a-meta-analysis
#6
Zibo Meng, Feiyang Wang, Yushun Zhang, Shoukang Li, Heshui Wu
The expression of B7-H4 was observed in a variety of tumors, however the prognostic value in cancer was still controversial. Therefore, we conducted this meta-analysis to explore the potential role of B7-H4 in cancer prognostic prediction. Twenty-seven studies including 3771 patients were brought into the analysis according to the inclusion and exclusion criteria. The pooled results demonstrated that elevated B7-H4 predicted a poor OS (HR = 1.93, 95% CI 1.71-2.18, P < 0.001) and DFS (HR = 1.84, 95% CI 1...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28978021/remarkably-similar-ctla-4-binding-properties-of-therapeutic-ipilimumab-and-tremelimumab-antibodies
#7
Mengnan He, Yan Chai, Jianxun Qi, Catherine W H Zhang, Zhou Tong, Yi Shi, Jinghua Yan, Shuguang Tan, George F Gao
Monoclonal antibody based immune checkpoint blockade therapies have achieved clinical successes in management of malignant tumors. As the first monoclonal antibody targeting immune checkpoint molecules entered into clinics, the molecular basis of ipilimumab-based anti-CTLA-4 blockade has not yet been fully understood. In the present study, we report the complex structure of ipilimumab and CTLA-4. The complex structure showed similar contributions from VH and VL of ipilimumab in binding to CTLA-4 front β-sheet strands...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28956884/structural-transition-in-metal-centered-boron-clusters-from-tubular-molecular-rotors-ta-b21-and-ta-b22-to-cage-like-endohedral-metalloborospherene-ta-b22
#8
Hai-Ru Li, Hui Liu, Xin-Xin Tian, Wen-Yan Zan, Yue-Wen Mu, Hai-Gang Lu, Jun Li, Yue-Kui Wang, Si-Dian Li
Inspired by the recent discovery of the metal-centered tubular molecular rotor Cs B2-Ta@B18(-) with the record coordination number of CN = 20 and based on extensive first-principles theory calculations, we present herein the possibility of the largest tubular molecular rotors Cs B3-Ta@B18 (1) and C3v B4-Ta@B18(+) (2) and smallest axially chiral endohedral metalloborospherenes D2 Ta@B22(-) (3 and 3'), unveiling a tubular-to-cage-like structural transition in metal-centered boron clusters at Ta@B22(-)via effective spherical coordination interactions...
October 11, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28956297/targeting-innate-immunity-for-type-1-diabetes-prevention
#9
REVIEW
James C Needell, Danny Zipris
PURPOSE OF REVIEW: Despite immense research efforts, type 1 diabetes (T1D) remains an autoimmune disease without a known trigger or approved intervention. Over the last three decades, studies have primarily focused on delineating the role of the adaptive immune system in the mechanism of T1D. The discovery of Toll-like receptors in the 1990s has advanced the knowledge on the role of the innate immune system in host defense as well as mechanisms that regulate adaptive immunity including the function of autoreactive T cells...
September 27, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28947093/decreased-tnf-family-receptor-expression-on-b-cells-is-associated-with-reduced-humoral-responses-to-streptococcus-pneumoniae-infections-in-young-children
#10
Saleem Basha, Michael E Pichichero
An underdeveloped or impaired immune response in young children is associated with increased susceptibility to Streptococcus pneumonia (Spn) infections. We determined serum antibody titers against 3 Spn vaccine candidate proteins and vaccine serotype polysaccharide antigens in a group of Spn infection prone 9-18months old and found lower IgG antibody titers to all tested antigens compared to age-matched non-infection-prone children. We also found the children had significantly reduced percentages of total memory B-cells, switched memory B-cells and plasma cells...
July 21, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28932563/a-systematic-and-genome-wide-correlation-meta-analysis-of-pd-l1-expression-and-targetable-nsclc-driver-genes
#11
Jin Li, Yaoqi Chen, Xiaoshun Shi, Xiaobing Le, Fenglan Feng, Jingyi Chen, Chengzhi Zhou, Yusong Chen, Shuai Wen, Haikang Zeng, Allen M Chen, Yu Zhang
BACKGROUND: Studies have shown that the ligand of programmed cell death protein 1 (B7-H1, CD274 or PD-L1) is related to lung cancer driver genes. Although studies have examined the association between lung cancer driver gene mutations or expression and PD-L1 expression, the present studies have not been mined the correlation systematically and genome-widely. METHODS: All relevant published PD-L1 articles with driver genes data and the RNA-seq dataset from The Cancer Genome Atlas (TCGA) were analyzed...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28888168/triazine-based-covalent-organic-frameworks-for-photodynamic-inactivation-of-bacteria-as-type-ii-photosensitizers
#12
Tingting Liu, Xinyuan Hu, Yanfeng Wang, Liyang Meng, Yanan Zhou, Jixiang Zhang, Min Chen, Xiaomei Zhang
With the increase of antibiotic resistances in microorganisms, photodynamic inactivation (PDI) as a clinically proven antibacterial therapy is gaining increasing attention in recent years due to its high efficacy. Herein, we reported two covalent organic frameworks (COFs) materials, namely COFs-Trif-Benz and COF-SDU1, as effective type-II photosensitizers for photodynamic inactivation of bacteria. COFs-Trif-Benz and COF-SDU1 are synthesized through a facile solvothermal reaction between tri-(4-formacylphenoxy)-1,3,5-triazine (trif) and benzidine or p-phenylenediamine with high yield...
July 21, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28881567/restoration-of-immune-surface-molecules-in-kaposi-sarcoma-associated-herpes-virus-infected-cells-by-lenalidomide-and-pomalidomide
#13
David A Davis, Suraj Mishra, Holda A Anagho, Ashley I Aisabor, Prabha Shrestha, Victoria Wang, Yuki Takamatsu, Kenji Maeda, Hiroaki Mitsuya, Jerome B Zeldis, Robert Yarchoan
Kaposi sarcoma-associated herpesvirus (KSHV) is the cause of several tumors, including Kaposi sarcoma and primary effusion lymphoma (PEL). Most viruses have evolved means of escaping immune recognition. KSHV downregulates MHC-I expression during lytic infection, and expression of ICAM-1 and B7-2 (CD86) during latent infection, allowing evasion of T cell and natural killer immunity respectively. These effects are largely mediated by two KSHV-encoded proteins, K3 and K5. We show here that lenalidomide (Len) and pomalidomide (Pom) prevent down-regulation of MHC-I during lytic activation, and restore ICAM-1 and B7-2 surface expression in latently infected PEL cells...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28875388/intrinsic-renal-cells-induce-lymphocytosis-of-th22-cells-from-iga-nephropathy-patients-through-b7-ctla-4-and-ccl-ccr-pathways
#14
Lu Gan, Qiaoling Zhou, Xiaozhao Li, Chen Chen, Ting Meng, Jiaxi Pu, Mengyuan Zhu, Chenggen Xiao
IgA nephropathy (IgAN), the most common glomerulonephritis, has an unclear pathogenesis. The role of Th22 cells, which are intimately related to proteinuria and progression in IgAN, in mediating infection-related IgAN is unclear. This study aimed to characterize the association between intrinsic renal cells (tubular epithelial cells and mesangial cells) and Th22 cells in immune regulation of infection-related IgAN and to elucidate the impact of Th22 lymphocytosis; the proinflammatory cytokines IL-1, IL-6, and TNF-α; and CCL chemokines on kidney fibrosis...
September 5, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28871938/-shendi-granules-regulates-the-balance-of-t-cell-subsets-and-down-regulates-podocalyxin-in-rats-with-mesangial-proliferative-glomerulonephritis
#15
Yiping Wang, Lei Zhang, Dong Wang, Ling Wei, Hua Jin, Xuelian Zhang, Lan Hu
Objective To observe the effect of Shendi granules on T cell subsets and podocyte marker protein in rats with mesangial proliferative glomerulonephritis (MsPGN), and study possible mechanism. Methods Totally 40 SD rats were randomly divided into the model group, valsartan group, Shendi granule group and normal group. The Shendi granule group were given 4 g/(kg.d) of Shendi granule by gavage; the valsartan group were given 10.3 mg/(kg.d) of valsartan by gavage; the model group and normal group were given the same amount of saline per day by gavage...
August 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28866656/immune-checkpoint-inhibitors-in-cancer-therapy
#16
Eika S Webb, Peng Liu, Renato Baleeiro, Nicholas R Lemoine, Ming Yuan, Yao-He Wang
In recent years immune checkpoint inhibitors have garnered attention as being one of the most promising types of immunotherapy on the horizon. There has been particular focus on the immune checkpoint molecules, cytotoxic T-lymphocyte antigen-4 (CTLA-4) and programmed cell death protein 1 (PD-1) which have been shown to have potent immunomodulatory effects through their function as negative regulators of T cell activation. CTLA-4, through engagement with its ligands B7-1 (CD80) and B7-2 (CD86), plays a pivotal role in attenuating the activation of naïve and memory T cells...
September 3, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28855356/phase-i-study-of-a-poxviral-tricom-based-vaccine-directed-against-the-transcription-factor-brachyury
#17
Christopher R Heery, Claudia Palena, Sheri McMahon, Renee N Donahue, Lauren M Lepone, Italia Grenga, Ulrike Dirmeier, Lisa Cordes, Jennifer L Marte, William Dahut, Harpreet Singh, Ravi A Madan, Romaine I Fernando, Duane H Hamilton, Jeffrey Schlom, James L Gulley
PURPOSE: The transcription factor brachyury has been shown in preclinical studies to be a driver of the epithelial-to-mesenchymal transition (EMT) and resistance to therapy of human tumor cells. This study describes the characterization of a Modified Vaccinia Ankara (MVA) vector-based vaccine expressing the transgenes for brachyury and three human costimulatory molecules (B7.1, ICAM-1, and LFA-3, designated TRICOM) and a phase I study with this vaccine. EXPERIMENTAL DESIGN: Human dendritic cells (DCs) were infected with MVA-brachyury-TRICOM to define their ability to activate brachyury-specific T cells...
August 30, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28833344/radioembolization-for-hepatocellular-carcinoma-statistical-confirmation-of-improved-survival-in-responders-by-landmark-analyses
#18
Ahsun Riaz, Ahmed Gabr, Nadine Abouchaleh, Rehan Ali, Ali Alasadi, Ronald Mora, Laura Kulik, Kush Desai, Bartley Thornburg, Samdeep Mouli, Ryan Hickey, Frank H Miller, Vahid Yaghmai, Daniel Ganger, Robert J Lewandowski, Riad Salem
Does imaging response predict survival in hepatocellular carcinoma (HCC)? We studied the ability of post-therapeutic imaging response to predict overall survival. Over 14 years, 948 HCC patients were treated with radioembolization. Patients with baseline metastases, vascular invasion, multifocal disease, Child-Pugh>B7 and transplanted/resected were excluded. This created our homogenous study cohort of 134 Child-Pugh≤B7 patients with solitary HCC. Response (using European Association for Study of the Liver [EASL] and Response Evaluation Criteria in Solid Tumors 1...
August 18, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28825603/nutritional-adequacy-of-the-specific-carbohydrate-diet-in-pediatric-inflammatory-bowel-disease
#19
Kimberly Braly, Nila Williamson, Michele L Shaffer, Dale Lee, Ghassan Wahbeh, Jani Klein, Matthew Giefer, David L Suskind
INTRODUCTION: The Specific Carbohydrate Diet (SCD) is an exclusion diet used as a therapy in inflammatory bowel disease (IBD). The aim of this study was to evaluate the nutritional adequacy of the SCD. METHODS: Prospective dietary data over 12 weeks were analyzed for pediatric patients on the SCD. Intake of 20 key nutrients was compared to Dietary Recommended Intake (DRI) levels and nutrient intake data from similarly aged children from The National Health and Nutrition Examination Survey (NHANES) National Youth Fitness Survey (NNYFS) in 2012...
April 27, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28821265/poncet-s-disease-after-the-intravesical-instillation-of-bacillus-calmette-gu%C3%A3-rin-bcg-a-case-report
#20
Paula Cíntia Machado Sampaio, Yan Garcia Lira, Hellen Yuki Umemura Ribeiro, Fernanda de Paula Moreira, Maitê Silva Martins Gadelha, Sérgio Ferreira Santos da Cruz
BACKGROUND: Poncet's disease is a rare syndrome characterized by articular impairment in a form of rare tuberculid. One of the theories of its cause involves an autoimmune response induced by the intravesical administration of the Calmette-Guerin Bacillus or the treatment of bladder carcinoma. Furthermore, there may be an appearance of oligoarticular or polyarticular arthritis, beginning 1-3 months after the start of therapy. Few physicians know the disease and the literature related to that syndrome is scarce and restricted to case reports, which contributes to its under diagnosis...
August 18, 2017: BMC Research Notes
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