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Cathepsin G

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https://www.readbyqxmd.com/read/28644993/long-term-toxicity-of-surface-charged-polystyrene-nanoplastics-to-marine-planktonic-species-dunaliella-tertiolecta-and-artemia-franciscana
#1
E Bergami, S Pugnalini, M L Vannuccini, L Manfra, C Faleri, F Savorelli, K A Dawson, I Corsi
Plastic pollution has been globally recognized as a critical issue for marine ecosystems and nanoplastics constitute one of the last unexplored areas to understand the magnitude of this threat. However, current difficulties in sampling and identifying nano-sized debris make hard to assess their occurrence in marine environment. Polystyrene nanoparticles (PS NPs) are largely used as nanoplastics in ecotoxicological studies and although acute exposures have been already investigated, long-term toxicity on marine organisms is unknown...
June 15, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28625714/proteomic-analysis-of-seminal-plasma-from-locally-adapted-curraleiro-p%C3%A3-duro-bulls-bos-taurus-identifying-biomarkers-involved-in-sperm-physiology-in-endangered-animals-for-conservation-of-biodiversity
#2
E B Menezes, R V de Oliveira, M F van Tilburg, E A Barbosa, N V Nascimento, A L M C S Velho, F B Moreno, R A Moreira, A C O Monteiro-Moreira, G M C Carvalho, A F Ramos, E Memili, A A Moura
The present study was aimed at evaluating the seminal plasma proteins and sperm parameters of Curraleiro Pé-Duro bulls. Semen was collected from 10 bulls by electroejaculation, and sperm parameters were evaluated in fresh and frozen-thawed semen. Seminal plasma proteins were analyzed by 2-D SDS-PAGE and mass spectrophotometry. Tools in computational biology were used to generate bioinformatic knowledge and evaluate gene ontology, protein-protein interactions, phylogenetic trees and multiple sequence alignments...
May 29, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28615690/cathepsin-d-regulates-lipid-metabolism-in-murine-steatohepatitis
#3
Tom Houben, Yvonne Oligschlaeger, Tim Hendrikx, Albert V Bitorina, Sofie M A Walenbergh, Patrick J van Gorp, Marion J J Gijbels, Silvia Friedrichs, Jogchum Plat, Frank G Schaap, Dieter Lütjohann, Marten H Hofker, Ronit Shiri-Sverdlov
Due to the obesity epidemic, non-alcoholic steatohepatitis (NASH) is a prevalent liver disease, characterized by fat accumulation and inflammation of the liver. However, due to a lack of mechanistic insight, diagnostic and therapeutic options for NASH are poor. Recent evidence has indicated cathepsin D (CTSD), a lysosomal enzyme, as a marker for NASH. Here, we investigated the function of CTSD in NASH by using an in vivo and in vitro model. In addition to diminished hepatic inflammation, inhibition of CTSD activity dramatically improved lipid metabolism, as demonstrated by decreased plasma and liver levels of both cholesterol and triglycerides...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28611989/expression-of-cathepsins-b-d-and-g-in-isocitrate-dehydrogenase-wildtype-glioblastoma
#4
Sabrina P Koh, Agadha C Wickremesekera, Helen D Brasch, Reginald Marsh, Swee T Tan, Tinte Itinteang
AIM: To investigate the expression of cathepsins B, D, and G, in relation to the cancer stem cell (CSC) subpopulations, we have previously characterized within isocitrate dehydogenase (IDH)-wildtype glioblastoma (IDHWGB). METHODS: 3,3-Diaminobezidine (DAB) immunohistochemical (IHC) staining for cathepsins B, D, and G, was performed on 4μm-thick formalin-fixed paraffin-embedded IDHWGB samples obtained from six patients. Two representative DHWGB samples from the original cohort of patients were selected for immunofluorescent (IF) IHC staining, to identify the localization of the cathepsins in relation to the CSC subpopulations...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28605601/a-new-sugarcane-cystatin-strongly-binds-to-dental-enamel-and-reduces-erosion
#5
A C Santiago, Z N Khan, M C Miguel, C C Gironda, A Soares-Costa, V T Pelá, A L Leite, J M Edwardson, M A R Buzalaf, F Henrique-Silva
Cystatin B was recently identified as an acid-resistant protein in acquired enamel pellicle; it could therefore be included in oral products to protect against caries and erosion. However, human recombinant cystatin is very expensive, and alternatives to its use are necessary. Phytocystatins are reversible inhibitors of cysteine peptidases that are found naturally in plants. In plants, they have several biological and physiological functions, such as the regulation of endogenous processes, defense against pathogens, and response to abiotic stress...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28592428/ebv-infection-empowers-human-b-cells-for-autoimmunity-role-of-autophagy-and-relevance-to-multiple-sclerosis
#6
Elena Morandi, S Anwar Jagessar, Bert A 't Hart, Bruno Gran
The efficacy of B cell depletion therapy in multiple sclerosis indicates their central pathogenic role in disease pathogenesis. The B lymphotropic EBV is a major risk factor in multiple sclerosis, via as yet unclear mechanisms. We reported in a nonhuman primate experimental autoimmune encephalomyelitis model that an EBV-related lymphocryptovirus enables B cells to protect a proteolysis-sensitive immunodominant myelin oligodendrocyte glycoprotein (MOG) epitope (residues 40-48) against destructive processing...
June 7, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28591228/a-secondary-wave-of-neutrophil-infiltration-causes-necrosis-and-ulceration-in-lesions-of-experimental-american-cutaneous-leishmaniasis
#7
Alex G Peniche, Diana L Bonilla, Gloria I Palma, Peter C Melby, Bruno L Travi, E Yaneth Osorio
We evaluated the importance of neutrophils in the development of chronic lesions caused by L. Viannia spp. using the hamster as experimental model of American Cutaneous Leishmaniasis (ACL). Neutrophils infiltrated the lesion within the first six hours post-infection. Inhibition of this early infiltration using a polyclonal antibody or cyclophosphamide was associated with transient parasite control but the protective effect vanished when lesions became clinically apparent. At lesion onset (approximately 10 days p...
2017: PloS One
https://www.readbyqxmd.com/read/28584258/cathepsin-s-inhibition-combines-control-of-systemic-and-peripheral-pathomechanisms-of-autoimmune-tissue-injury
#8
Maia Tato, Santhosh V Kumar, Yajuan Liu, Shrikant R Mulay, Solange Moll, Bastian Popper, Jonathan N Eberhard, Dana Thomasova, Arne Christian Rufer, Sabine Gruner, Wolfgang Haap, Guido Hartmann, Hans-Joachim Anders
Cathepsin(Cat)-S processing of the invariant chain-MHC-II complex inside antigen presenting cells is a central pathomechanism of autoimmune-diseases. Additionally, Cat-S is released by activated-myeloid cells and was recently described to activate protease-activated-receptor-(PAR)-2 in extracellular compartments. We hypothesized that Cat-S blockade targets both mechanisms and elicits synergistic therapeutic effects on autoimmune tissue injury. MRL-(Fas)lpr mice with spontaneous autoimmune tissue injury were treated with different doses of Cat-S inhibitor RO5459072, mycophenolate mofetil or vehicle...
June 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28582770/the-protective-effect-of-epimedii-folium-and-curculiginis-rhizoma-on-alzheimer-s-disease-by-the-inhibitions-of-nf-%C3%AE%C2%BAb-mapk-pathway-and-nlrp3-inflammasome
#9
Zhou Lan, Guangjing Xie, Meng Wei, Ping Wang, Lvyi Chen
The purpose of the current study was to explore the effects of the water extracts of Epimedii Folium and Curculiginis Rhizoma (EX) on Aβ-induced Alzheimer's disease. Aβ1-42 was stereotaxically injected bilaterally into the dorsal hippocampus, and then the rats were orally received EX at the doses of 2 g/kg and 6 g/kg for 30 days. Behavior was monitored through Morris water maze test. The neuroprotective effect of EX were examined with methods of histochemistry and biochemistry. EX reduced the contents of pro-inflammatory cytokines tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and interleukin-6 (IL-6) in hippocampus and cortex...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28580393/estrogen-depletion-and-drug-treatment-alter-the-microstructure-of-type-i-collagen-in-bone
#10
Meagan A Cauble, Matthew J Muckley, Ming Fang, Jeffrey A Fessler, Kathleen Welch, Edward D Rothman, Bradford G Orr, Le T Duong, Mark M Banaszak Holl
The impact of estrogen depletion and drug treatment on type I collagen fibril nanomorphology and collagen fibril packing (microstructure) was evaluated by atomic force microscopy (AFM) using an ovariectomized (OVX) rabbit model of estrogen deficiency induced bone loss. Nine month-old New Zealand white female rabbits were treated as follows: sham-operated (Sham; n = 11), OVX + vehicle (OVX + Veh; n = 12), OVX + alendronate (ALN, 600 μg/kg/wk., s.c.; n = 12), and OVX + cathepsin-K inhibitor L-235 (CatKI, 10 mg/kg, daily, p...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28579388/targeting-cysteine-proteases-in-trypanosomatid-disease-drug-discovery
#11
REVIEW
Leonardo G Ferreira, Adriano D Andricopulo
Chagas disease and human African trypanosomiasis are endemic conditions in Latin America and Africa, respectively, for which no effective and safe therapy is available. Efforts in drug discovery have focused on several enzymes from these protozoans, among which cysteine proteases have been validated as molecular targets for pharmacological intervention. These enzymes are expressed during the entire life cycle of trypanosomatid parasites and are essential to many biological processes, including infectivity to the human host...
June 1, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28577094/local-and-systemic-functional-responses-of-mouse-macrophages-to-intravaginal-infection-with-type-2-herpes-simplex-virus-and-vaccination
#12
L G Zaitseva, V A Bekhalo, I V Kireeva, G M Shaposhnikova, E V Nagurskaya, I F Barinskii, V G Nesterenko
Activity of cathepsin D and phagocytosis of macrophages from vaginal lavage fluid, peritoneal exudation, and spleen were studied in mice of sensitive (DBA/2) and resistant (BALB/c) lines after intravaginal infection with type 2 herpes simplex virus and vaccination. Activity of cathepsin D and intensity of phagocytosis (irrespective of the macrophage source) and their ratio in BALB/c mice in early terms after infection were close to the control levels taken as a unit. In DBA/2 mice, these parameters and their balance were shifted and changes in cathepsin D activity depended on the time after challenge...
June 3, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28544544/insulin-like-growth-factor-1-signaling-is-responsible-for-cathepsin-g-induced-aggregation-of-breast-cancer-mcf-7-cells
#13
Riyo Morimoto-Kamata, Satoru Yui
Cathepsin G (CG), a neutrophil serine protease, induces cell migration and multicellular aggregation of human breast cancer MCF-7 cells in a process that is dependent on E-cadherin and CG enzymatic activity. While these tumor cell aggregates can cause tumor emboli that could represent intravascular growth and extravasation into the surrounding tissues, resulting in metastasis, the molecular mechanism underlying this process remains poorly characterized. In this study, we aimed to identify the signaling pathway that is triggered during CG-mediated stimulation of cell aggregation...
May 24, 2017: Cancer Science
https://www.readbyqxmd.com/read/28526399/evaluation-of-the-effectiveness-of-chronic-antidepressant-drug-treatments-in-the-hippocampal-mitochondria-a-proteomic-study-in-an-animal-model-of-depression
#14
Katarzyna Głombik, Aneta Stachowicz, Ewa Trojan, Rafał Olszanecki, Joanna Ślusarczyk, Maciej Suski, Katarzyna Chamera, Bogusława Budziszewska, Władysław Lasoń, Agnieszka Basta-Kaim
Several lines of evidence indicate that adverse experience in early life may be a triggering factor for disturbances in the brain mitochondrial proteins and lead to the development of depression in adulthood. On the other hand, little is known about the impact of chronic administration of various antidepressant drugs on the brain mitochondria, as a target for the pharmacotherapy of depression. The purpose of our study was to compare the impact of chronic treatment with two antidepressant drugs with different mechanisms of action, a tricyclic antidepressant (TCA), imipramine, and an antidepressant of the selective serotonin reuptake inhibitor (SSRI) class, fluoxetine, on the mitochondria-enriched subproteome profile in the hippocampus of 3-month-old male rats following a prenatal stress procedure (an animal model of depression)...
May 17, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28506283/prolactin-blocks-the-expression-of-receptor-activator-of-nuclear-factor-%C3%AE%C2%BAb-ligand-and-reduces-osteoclastogenesis-and-bone-loss-in-murine-inflammatory-arthritis
#15
Maria G Ledesma-Colunga, Norma Adán, Georgina Ortiz, Mariana Solís-Gutiérrez, Fernando López-Barrera, Gonzalo Martínez de la Escalera, Carmen Clapp
BACKGROUND: Prolactin (PRL) reduces joint inflammation, pannus formation, and bone destruction in rats with polyarticular adjuvant-induced arthritis (AIA). Here, we investigate the mechanism of PRL protection against bone loss in AIA and in monoarticular AIA (MAIA). METHODS: Joint inflammation, trabecular bone loss, and osteoclastogenesis were evaluated in rats with AIA treated with PRL (via osmotic minipumps) and in mice with MAIA that were null (Prlr-/-) or not (Prlr+/+) for the PRL receptor...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28505146/upregulated-autophagy-in-sertoli-cells-of-ethanol-treated-rats-is-associated-with-induction-of-inducible-nitric-oxide-synthase-inos-androgen-receptor-suppression-and-germ-cell-apoptosis
#16
Akio Horibe, Nabil Eid, Yuko Ito, Hitomi Hamaoka, Yoshihisa Tanaka, Yoichi Kondo
This study was conducted to investigate the autophagic response of Sertoli cells (SCs) to acute ethanol toxicity using in vivo and in vitro models. Adult Wistar rats were intraperitoneally injected with either 5 g/kg ethanol or phosphate-buffered saline (for the control group) and sacrificed 0, 3, 6 and 24 h after injection. Compared to the control group, enhanced germ cell apoptosis was observed in the ethanol-treated rats (ETRs) in association with upregulation of iNOS and reduced expression of androgen receptor protein levels in SCs, which were resistant to apoptosis...
May 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28468961/urine-ras-components-in-mice-and-people-with-type-1-diabetes-and-chronic-kidney-disease
#17
Jan Wysocki, Anne Goodling, Mar Burgaya, Kathryn Whitlock, John Ruzinski, Daniel Batlle, Maryam Afkarian
Pathways implicated in diabetic kidney disease (DKD) are largely derived from animal models. To examine if renin-angiotensin system (RAS) changes in humans are concordant with rodent models, we measured concentration of angiotensinogen (AOG), cathepsin D(CTSD), angiotensin converting enzyme(ACE), ACE2 and enzymatic activities of ACE, ACE2 and aminopeptidase-A in FVB mice 13-20 weeks after streptozotocin (n=9) or vehicle (n=15) and people with longstanding type 1 diabetes, with (n=37) or without (n=81) DKD. In streptozotocin-treated mice, urine AOG and CTSD were 10...
May 3, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28465586/oxidation-of-protein-bound-methionine-in-photofrin-photodynamic-therapy-treated-human-tumor-cells-explored-by-methionine-containing-peptide-enrichment-and-quantitative-proteomics-approach
#18
Ya-Ju Hsieh, Kun-Yi Chien, I-Fang Yang, I-Neng Lee, Chia-Chun Wu, Tung-Yung Huang, Jau-Song Yu
In Photofrin-mediated photodynamic therapy (PDT), cell fate can be modulated by the subcellular location of Photofrin. PDT triggers oxidative damage to target cells, including the methionine (Met) oxidation of proteins. Here, we developed a new Met-containing peptide enrichment protocol combined with SILAC-based quantitative proteomics, and used this approach to explore the global Met oxidation changes of proteins in PDT-treated epidermoid carcinoma A431 cells preloaded with Photofrin at the plasma membrane, ER/Golgi, or ubiquitously...
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28457472/duplicated-enhancer-region-increases-expression-of-ctsb-and-segregates-with-keratolytic-winter-erythema-in-south-african-and-norwegian-families
#19
Thandiswa Ngcungcu, Martin Oti, Jan C Sitek, Bjørn I Haukanes, Bolan Linghu, Robert Bruccoleri, Tomasz Stokowy, Edward J Oakeley, Fan Yang, Jiang Zhu, Marc Sultan, Joost Schalkwijk, Ivonne M J J van Vlijmen-Willems, Charlotte von der Lippe, Han G Brunner, Kari M Ersland, Wayne Grayson, Stine Buechmann-Moller, Olav Sundnes, Nanguneri Nirmala, Thomas M Morgan, Hans van Bokhoven, Vidar M Steen, Peter R Hull, Joseph Szustakowski, Frank Staedtler, Huiqing Zhou, Torunn Fiskerstrand, Michele Ramsay
Keratolytic winter erythema (KWE) is a rare autosomal-dominant skin disorder characterized by recurrent episodes of palmoplantar erythema and epidermal peeling. KWE was previously mapped to 8p23.1-p22 (KWE critical region) in South African families. Using targeted resequencing of the KWE critical region in five South African families and SNP array and whole-genome sequencing in two Norwegian families, we identified two overlapping tandem duplications of 7.67 kb (South Africans) and 15.93 kb (Norwegians). The duplications segregated with the disease and were located upstream of CTSB, a gene encoding cathepsin B, a cysteine protease involved in keratinocyte homeostasis...
May 4, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28424202/global-protease-activity-profiling-provides-differential-diagnosis-of-pancreatic-cysts
#20
Sam L Ivry, Jeremy M Sharib, Dana A Dominguez, Nilotpal Roy, Stacy E Hatcher, Michele Yip-Schneider, C Max Schmidt, Randall E Brand, Walter G Park, Matthias Hebrok, Grace Kim, Anthony J O'Donoghue, Kimberly S Kirkwood, Charles S Craik
Pancreatic cysts are estimated to be present 2-3% of the adult population. Unfortunately, current diagnostics do not accurately distinguish benign cysts from those that can progress into invasive cancer. Missregulated pericellular proteolysis is a hallmark of malignancy, and therefore, we used a global approach to discover protease activities that differentiate benign nonmucinous cysts from premalignant mucinous cysts.<br /><br />Experimental Design: We employed an unbiased and global protease profiling approach to discover protease activities in 23 cyst fluid samples...
April 19, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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