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https://www.readbyqxmd.com/read/28821633/cell-autonomous-cytotoxicity-of-type-i-interferon-response-via-induction-of-endoplasmic-reticulum-stress
#1
Chrysovalantou Mihailidou, Athanasios G Papavassiliou, Hippokratis Kiaris
The interaction of IFN with specific membrane receptors that transduce death-inducing signals is considered to be the principle mechanism of IFN-induced cytotoxicity. In this study, the classic non-cell-autonomous cytotoxicity of IFN was augmented by cell-autonomous mechanisms that operated independently of the interaction of IFN with its receptors. Cells primed to produce IFN by 5-azacytidine (5-aza) underwent endoplasmic reticulum (ER) stress. The chemical chaperones tauroursodeoxycholate (TUDCA) and 4-phenylbutyrate (4-PBA), as well as the iron chelator ciclopirox (CPX), which reduces ER stress, alleviated the cytotoxicity of 5-aza...
August 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28819829/surgical-treatment-for-symptomatic-non-ossifying-fibromas-of-the-lower-extremity-with-calcium-sulfate-grafts-in-skeletally-immature-patients
#2
Antonio Andreacchio, Flavia Alberghina, Gianluca Testa, Federico Canavese
BACKGROUND: Non-ossifying fibromas (NOFs) are common benign bone lesions found in children and adolescents. They usually involve metaphysis of long bones, tend to gradually disappear with age and usually do not require surgery, while they are not associated with pathological fractures. The aim of this study was to evaluate the outcome and efficacy of a single-stage procedure, comprising curettage of the lesion and calcium sulfate pellet (CaSP) grafting, in skeletally immature patients with large, symptomatic NOF of the lower extremity, and the possible limitations of the procedure...
August 17, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28818160/determination-of-mean-glycated-haemoglobin-in-healthy-adults-of-a-local-population
#3
Sumbal Nida, Dilshad Ahmed Khan, Aamir Ijaz, Muhammad Qaiser Alam Khan, Hira Aleef, Maria Abbasi
OBJECTIVE: To determine the mean hemoglobin HbA1C levels of disease-free adults in a local population and its optimum cutoff for the diagnosis of diabetes. STUDY DESIGN: Cross-sectional study. PLACE AND DURATION OF STUDY: Department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology, Rawalpindi, from January to September 2015. METHODOLOGY: Healthy subjects aged 18 years and above of either gender were recruited from local population...
July 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28818091/non-canonical-soluble-amyloid-beta-aggregates-and-plaque-buffering-controversies-and-future-directions-for-target-discovery-in-alzheimer-s-disease
#4
REVIEW
David L Brody, Hao Jiang, Norelle Wildburger, Thomas J Esparza
The specific amyloid-beta (Aβ) species or other amyloid-precursor protein cleavage products that are most directly related to human neurodegeneration and clinical dementia of the Alzheimer's type have not yet been directly identified. Without a clear understanding of the most relevant species, it is difficult to determine whether therapeutic candidates successfully engaged the correct target(s). Here, we review some of the controversies regarding soluble Aβ aggregates (also termed oligomers, dimers, trimers, Aβ*56, amylospheroids, etc...
August 17, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28809479/natural-seminal-amyloids-as-targets-for-development-of-synthetic-inhibitors-of-hiv-transmission
#5
Daniel A Sheik, Stephen Dewhurst, Jerry Yang
Amyloids refer to a class of protein or peptide aggregates that are heterogeneous in size, morphology, and composition, and are implicated to play a central role in many neurodegenerative and systemic diseases. The strong correlation between biological activity and extent of aggregation of amyloidogenic proteins and peptides has led to an explosion of research efforts to target these materials with synthetic molecules or engineered antibodies to try to attenuate their function in disease pathology. Although many of these efforts to attenuate amyloid function have shown great promise in laboratory settings, the vast majority of work has been focused on targeting amyloids associated with neurologic diseases, which has been met with significant additional challenges that preclude clinical evaluation...
August 15, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28808403/the-possible-pre-and-post-uva-radiation-protective-effect-of-amaranth-oil-on-human-skin-fibroblast-cells
#6
Katarzyna Wolosik, Ilona Zareba, Arkadiusz Surazynski, Agnieszka Markowska
BACKGROUND: The health effects of Amaranth Oil (AO) are attributed to its specific chemical composition. That makes it an outstanding natural product for the prevention and treatment of ultraviolet (UV) irradiation-related pathologies such as sunburn, photoaging, photoimmunosuppression, and photocarcinogenesis. Most of the studies are taken on animal model, and there is a lack of research on the endogenous effect of AO on fibroblast level, where UVA takes it harmful place. OBJECTIVE: The aim of this study was evaluation if AO can protect or abolish UVA exposure effect on human skin fibroblast...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807932/reducing-inflammatory-cytokine-production-from-renal-collecting-duct-cells-by-inhibiting-gata2-ameliorates-acute-kidney-injury
#7
Lei Yu, Takashi Moriguchi, Hiroshi Kaneko, Makiko Hayashi, Atsushi Hasegawa, Masahiro Nezu, Hideyuki Saya, Masayuki Yamamoto, Ritsuko Shimizu
Acute kidney injury (AKI) is a leading cause of chronic kidney disease. Proximal tubules are considered to be the primary origin of pathogenic inflammatory cytokines in AKI. However, it remains unclear whether other cell types, including collecting duct (CD) cells, participate in inflammatory processes. The transcription factor GATA2 is specifically expressed in CD cells and maintains their cellular identity. To explore the pathophysiological function of GATA2 in AKI, we generated renal tubular cell-specific Gata2 deletion (G2CKO) mice and examined their susceptibility to ischemia-reperfusion injury (IRI)...
August 14, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28805710/analysis-of-the-pathogenic-factors-and-management-of-dry-eye-in-ocular-surface-disorders
#8
REVIEW
Marcella Nebbioso, Paola Del Regno, Magda Gharbiya, Marta Sacchetti, Rocco Plateroti, Alessandro Lambiase
The tear film represents the interface between the eye and the environment. The alteration of the delicate balance that regulates the secretion and distribution of the tear film determines the dry eye (DE) syndrome. Despite having a multifactorial origin, the main risk factors are female gender and advanced age. Likewise, morphological changes in several glands and in the chemical composition of their secretions, such as proteins, mucins, lipidics, aqueous tears, and salinity, are highly relevant factors that maintain a steady ocular surface...
August 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28805116/bisphenol-a-and-adverse-pregnancy-outcomes-a-systematic-review-of-the-literature
#9
Vasilios Pergialiotis, Paraskevi Kotrogianni, Evangelos Christopoulos-Timogiannakis, Diamanto Koutaki, Georgios Daskalakis, Nikolaos Papantoniou
PURPOSE: Bisphenol A is a chemical compound related to adverse maternal and neonatal outcomes. The purpose of the present systematic review is to summarize current knowledge in the field. MATERIALS AND METHODS: We systematically searched the Medline (1966-2017), Scopus (2004-2017), Clinicaltrials.gov (2008-2017), Cochrane Central Register of Controlled Trials CENTRAL (1999-2017) databases. RESULTS: Thirty-five studies were included in the present systematic review...
August 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28803058/survey-of-ferns-and-clinico-pathological-studies-on-the-field-cases-of-enzootic-bovine-haematuria-in-himachal-pradesh-a-north-western-himalayan-state-of-india
#10
Sarvesh K Rai, Rinku Sharma, Alka Kumari, Lars H Rasmussen, Rajendra D Patil, Rasbehari Bhar
Enzootic bovine haematuria (EBH) in cattle occurs in upland areas of the world. In India, the disease is present in isolated pockets in the Himalayas and in the Nilgiri Hills. The variation in the disease incidence has been attributed to different environmental conditions and animal rearing practices followed in the different regions. The aim of the study was to conduct field surveys in parts of EBH endemic regions of Himachal Pradesh, a north-western Himalayan state of India. Out of the total 103 plant samples collected, a total of 95 samples were identified as ferns...
August 9, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28800971/perkinsus-infection-is-associated-with-alterations-in-the-level-of-global-dna-methylation-of-gills-and-gastrointestinal-tract-of-the-oyster-crassostrea-gasar
#11
Natanael Dantas Farias, Naila Francis Paulo de Oliveira, Patricia Mirella da Silva
Bivalves are filter feeders that obtain food from seawater that may contain infectious agents, such as the protozoan parasites Perkinsus marinus and P. olseni that are associated with massive mortalities responsible for losses in the aquaculture industry. Despite all physical and chemical barriers, microorganisms cross epithelia and infect host tissues to cause pathologies. Epigenetics mechanisms play important roles in a variety of human processes, from embryonic development to cell differentiation and growth...
August 8, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28800373/dysphagia-and-speech-language-pathology-involvement-following-chemical-ingestion-injury-a-review-of-44-cases-admitted-to-a-quaternary-australian-hospital-2008-2012
#12
Anna F Rumbach, Rebecca Cremer
Purpose: This study aimed to explore the clinical characteristics of an adult chemical ingestion population and examine the course of return to oral intake post injury and speech-language pathologist (SLP) involvement during the initial acute-care admission. Method: A retrospective chart review of adults admitted to a quaternary hospital for the treatment of an acute chemical ingestion injury between 2008 and 2012 was conducted. Results: Forty-four adults (23 men, 21 women) were identified as receiving treatment for ingestion injury, of whom 18 (40...
August 11, 2017: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/28799115/remnant-gastropathy-due-to-bile-reflux-after-roux-en-y-gastric-bypass-a-unique-cause-of-abdominal-pain-and-successful-treatment-with-ursodiol
#13
Nitin Kumar, Christopher C Thompson
BACKGROUND: Chronic abdominal pain can occur after Roux-en-Y gastric bypass (RYGB), and can remain unexplained despite extensive investigation. Bile can pool in the gastric remnant and create a bile reflux gastropathy. The aim of this study was to assess gastric remnant findings in patients with RYGB and chronic abdominal pain of unclear etiology, and to determine the effectiveness of ursodiol therapy for patients with confirmed remnant gastropathy. METHODS: All consecutive patients with RYGB and a diagnosis of chronic abdominal pain, and a negative diagnostic workup (including physical examination, routine laboratory work, cross-sectional imaging, and standard upper endoscopy), who underwent device-assisted enteroscopy for evaluation of the gastric remnant, were included...
August 10, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28792261/ph-sensitive-phlip-%C3%A2-coated-niosomes
#14
Mohan C Pereira, Monica Pianella, Da Wei, Anna Moshnikova, Carlotta Marianecci, Maria Carafa, Oleg A Andreev, Yana K Reshetnyak
Nanomedicine is becoming very popular over conventional methods due to the ability to tune physico-chemical properties of nano vectors, which are used for encapsulation of therapeutic and diagnostic agents. However, the success of nanomedicine primarily relies on how specifically and efficiently nanocarriers can target pathological sites to minimize undesirable side effects and enhance therapeutic efficacy. Here, we introduce a novel class of targeted nano drug delivery system, which can be used as an effective nano-theranostic for cancer...
August 9, 2017: Molecular Membrane Biology
https://www.readbyqxmd.com/read/28783067/a-study-of-thermistor-performance-within-a-textile-structure
#15
Theodore Hughes-Riley, Pasindu Lugoda, Tilak Dias, Christophe L Trabi, Robert H Morris
Textiles provide an ideal structure for embedding sensors for medical devices. Skin temperature measurement is one area in which a sensor textile could be particularly beneficial; pathological skin is normally very sensitive, making the comfort of anything placed on that skin paramount. Skin temperature is an important parameter to measure for a number of medical applications, including for the early detection of diabetic foot ulcer formation. To this end an electronic temperature-sensor yarn was developed by embedding a commercially available thermistor chip into the fibres of a yarn, which can be used to produce a textile or a garment...
August 5, 2017: Sensors
https://www.readbyqxmd.com/read/28782624/post-translational-modifications-of-the-mitochondrial-f1fo-atpase
#16
REVIEW
Salvatore Nesci, Fabiana Trombetti, Vittoria Ventrella, Alessandra Pagliarani
BACKGROUND: The mitochondrial F1FO-ATPase has the main role in synthesizing most of ATP, thus providing energy to living cells, but it also works in reverse and hydrolyzes ATP, depending on the transmembrane electrochemical gradient. Within the same complex the vital role of the enzyme of life coexists with that of molecular switch to trigger programmed cell death. The two-faced vital/lethal role makes the enzyme complex an intriguing biochemical target to fight pathogens resistant to traditional therapies and diseases linked to mitochondrial dysfunctions...
August 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28780078/atp-maintenance-via-two-types-of-atp-regulators-mitigates-pathological-phenotypes-in-mouse-models-of-parkinson-s-disease
#17
Masaki Nakano, Hiromi Imamura, Norio Sasaoka, Masamichi Yamamoto, Norihito Uemura, Toshiyuki Shudo, Tomohiro Fuchigami, Ryosuke Takahashi, Akira Kakizuka
Parkinson's disease is assumed to be caused by mitochondrial dysfunction in the affected dopaminergic neurons in the brain. We have recently created small chemicals, KUSs (Kyoto University Substances), which can reduce cellular ATP consumption. By contrast, agonistic ligands of ERRs (estrogen receptor-related receptors) are expected to raise cellular ATP levels via enhancing ATP production. Here, we show that esculetin functions as an ERR agonist, and its addition to culture media enhances glycolysis and mitochondrial respiration, leading to elevated cellular ATP levels...
August 2017: EBioMedicine
https://www.readbyqxmd.com/read/28776072/tof-sims-and-principal-component-analysis-of-lipids-and-amino-acids-from-inflamed-and-dysplastic-human-colonic-mucosa
#18
Marco Urbini, Valentina Petito, Francesco de Notaristefani, Franco Scaldaferri, Antonio Gasbarrini, Luca Tortora
Here, time of flight secondary ion mass spectrometry (ToF-SIMS) and multivariate analysis were combined to study the role of ulcerative colitis (UC), a type of inflammatory bowel disease (IBD), in the colon cancer progression. ToF-SIMS was used to obtain mass spectra and chemical maps from the mucosal surface of human normal (NC), inflamed (IC), and dysplastic (DC) colon tissues. Chemical mapping with a lateral resolution of ≈ 1 μm allowed to evaluate zonation of fatty acids and amino acids as well as the morphological condition of the intestinal glands...
August 3, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28775673/the-image-data-resource-a-bioimage-data-integration-and-publication-platform
#19
Eleanor Williams, Josh Moore, Simon W Li, Gabriella Rustici, Aleksandra Tarkowska, Anatole Chessel, Simone Leo, Bálint Antal, Richard K Ferguson, Ugis Sarkans, Alvis Brazma, Rafael E Carazo Salas, Jason R Swedlow
Access to primary research data is vital for the advancement of science. To extend the data types supported by community repositories, we built a prototype Image Data Resource (IDR) that collects and integrates imaging data acquired across many different imaging modalities. IDR links data from several imaging modalities, including high-content screening, super-resolution and time-lapse microscopy, digital pathology, public genetic or chemical databases, and cell and tissue phenotypes expressed using controlled ontologies...
August 2017: Nature Methods
https://www.readbyqxmd.com/read/28775266/in-silico-model-of-the-human-clc-kb-chloride-channel-pore-mapping-biostructural-pathology-and-drug-screening
#20
Maxime Louet, Sara Bitam, Naziha Bakouh, Yohan Bignon, Gabrielle Planelles, David Lagorce, Maria A Miteva, Dominique Eladari, Jacques Teulon, Bruno O Villoutreix
The human ClC-Kb channel plays a key role in exporting chloride ions from the cytosol and is known to be involved in Bartter syndrome type 3 when its permeation capacity is decreased. The ClC-Kb channel has been recently proposed as a potential therapeutic target to treat hypertension. In order to gain new insights into the sequence-structure-function relationships of this channel, to investigate possible impacts of amino-acid substitutions, and to design novel inhibitors, we first built a structural model of the human ClC-Kb channel using comparative modeling strategies...
August 3, 2017: Scientific Reports
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