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Cathepsin

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https://www.readbyqxmd.com/read/27926992/inherited-diseases-caused-by-mutations-in-cathepsin-protease-genes
#1
REVIEW
Stephanie Ketterer, Alejandro Gomez-Auli, Larissa E Hillebrand, Agnese Petrera, Anett Ketscher, Thomas Reinheckel
Lysosomal cathepsins are proteolytic enzymes increasingly recognized as prognostic markers and potential therapeutic targets in a variety of diseases. In those conditions the cathepsins are mostly overexpressed, thereby driving the respective pathogenic processes. Although less known, there are also diseases with a genetic deficiency of cathepsins. In fact, nowadays six out of the fifteen human proteases called "cathepsins" have been linked to inherited syndromes. However, only three of these syndromes are typical lysosomal storage diseases, while the others are apparently caused by defective cleavage of specific protein substrates...
December 7, 2016: FEBS Journal
https://www.readbyqxmd.com/read/27923657/prohormone-convertase-7-is-necessary-for-the-normal-processing-of-cholecystokinin-in-mouse-brain
#2
Emmanuel N Anyetei-Anum, Alissa Blum, Nabil G Seidah, Margery C Beinfeld
Endoproteases in the secretory pathway process pro-cholecystokinin (CCK) into the biologically active forms found in the tissues that express CCK mRNA. Thus far, the endoproteases involved in CCK processing include cathepsin L and the prohormone convertases (PC) 1, 2, and 5. This study finds that PC7 is also critical for normal production of CCK in specific areas of the brain. Loss of PC7 results in decreased levels of CCK in more brain regions than any other endoprotease studied to date. Substantial decreases in brain levels of CCK are found in the prefrontal, frontal, parietal-insular-pyriform, and temporal cortex, caudate-putamen, basal forebrain, thalamus, hippocampus, septum, and medulla of PC7 knock-out (KO) mice...
December 3, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27923176/co-distribution-of-cysteine-cathepsins-and-matrix-metalloproteases-in-human-dentin
#3
Polliana Mendes Candia Scaffa, Lorenzo Breschi, Annalisa Mazzoni, Cristina de Mattos Pimenta Vidal, Rosa Curci, Fabianni Apolonio, Pietro Gobbi, David Pashley, Leo Tjäderhane, Ivarne Luis Dos Santos Tersariol, Fábio Dupart Nascimento, Marcela Rocha Carrilho
It has been hypothesized that cysteine cathepsins (CTs) along with matrix metalloproteases (MMPs) may work in conjunction in the proteolysis of mature dentin matrix. The aim of this study was to verify simultaneously the distribution and presence of cathepsins B (CT-B) and K (CT-K) in partially demineralized dentin; and further to evaluate the activity of CTs and MMPs in the same tissue. The distribution of CT-B and CT-K in sound human dentin was assessed by immunohistochemistry. A double-immunolabeling technique was used to identify, at once, the occurrence of those enzymes in dentin...
November 21, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27922112/plasma-cathepsin-d-correlates-with-histological-classifications-of-fatty-liver-disease-in-adults-and-responds-to-intervention
#4
Sofie M A Walenbergh, Tom Houben, Sander S Rensen, Veerle Bieghs, Tim Hendrikx, Patrick J van Gorp, Yvonne Oligschlaeger, Mike L J Jeurissen, Marion J J Gijbels, Wim A Buurman, Anita C E Vreugdenhil, Jan Willem M Greve, Jogchum Plat, Marten H Hofker, Satish Kalhan, Jussi Pihlajamäki, Patrick Lindsey, Ger H Koek, Ronit Shiri-Sverdlov
Non-alcoholic steatohepatitis (NASH) is characterized by liver lipid accumulation and inflammation. The mechanisms that trigger hepatic inflammation are poorly understood and subsequently, no specific non-invasive markers exist. We previously demonstrated a reduction in the plasma lysosomal enzyme, cathepsin D (CatD), in children with NASH compared to children without NASH. Recent studies have raised the concept that non-alcoholic fatty liver disease (NAFLD) in adults is distinct from children due to a different histological pattern in the liver...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920423/de-novo-renal-neoplasia-after-kidney-transplantation-according-to-new-2016-who-classification-of-renal-tumors
#5
Albino Eccher, Luigino Boschiero, Brett Delahunt, Luca Cima, Francesca Fior, Francesco Nacchia, Momo Rostand, Amedeo Carraro, Umberto Tedeschi, Gianluigi Zaza, Marilena Casartelli Liviero, Laura Zampicinini, Marco Chilosi, Giuseppe Feltrin, Claudio Rago, Antonietta D'Errico, Claudio Ghimenton, Guido Martignoni, Matteo Brunelli
BACKGROUND De novo renal neoplasia developing after kidney transplantation at Verona Kidney Transplant Center were reviewed according to new 2016 WHO Renal Tumor Classification. MATERIAL AND METHODS Primary renal tumors developed in native or transplanted kidneys de novo following renal transplantation were retrieved and histologically reviewed by three expert uropathologists. Immunoexpression of the diagnostic antigens CD13, CD10, CK7, CK34bE12, AMACR, CAIX, AE1/AE3, CK14, GATA-3, HMB-45, cathepsin-k, S100A1, and parvalbumin was assessed...
December 6, 2016: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/27919786/increasing-in-cysteine-proteinase-b-expression-and-enzymatic-activity-during-in-vitro-differentiation-of-leishmania-viannia-braziliensis-first-evidence-of-modulation-during-morphological-transition
#6
Cinthia Bernardes Gomes, Franklin Souza da Silva, Karen Dos Santos Charret, Bernardo Acácio Santini Pereira, Léa Cysne Finkelstein, Raquel Santos de Souza, Luzia Monteiro de Castro Côrtes, Mirian Claudia Souza Pereira, Francisco Odêncio Rodrigues de Oliveira, Carlos Roberto Alves
Leishmania (Viannia) braziliensis presents adaptive protease-dependent mechanisms, as cysteine proteinases B (CPB). This work focuses on the expression of three cpb gene isoforms and CPB enzymatic activity during the parasite differentiation. Relative expression levels of LbrM.08.0810 gene was assessed, showing a higher quantity of transcripts in the logarithmic promastigotes phase than in the stationary promastigotes phase (> 1.5 times). The cbp gene tends to decrease during acid pH shock and increases when the temperature rises (> 1...
December 2, 2016: Biochimie
https://www.readbyqxmd.com/read/27919184/role-of-engineered-metal-oxide-nanoparticle-agglomeration-in-reactive-oxygen-species-generation-and-cathepsin-b-release-in-nlrp3-inflammasome-activation-and-pulmonary-toxicity
#7
Tina M Sager, Michael Wolfarth, Stephen S Leonard, Anna M Morris, Dale W Porter, Vincent Castranova, Andrij Holian
Incomplete understanding of the contributions of dispersants and engineered nanoparticles/materials (ENM) agglomeration state to biological outcomes presents an obstacle for toxicological studies. Although reactive oxygen species (ROS) production is often regarded as the primary indicator of ENM bioactivity and toxicity, it remains unclear whether ENM produce ROS or whether ROS is an outcome of ENM-induced cell injury. Phagolysosomal disruption and cathepsin B release also promote bioactivity through inflammasome activation...
December 5, 2016: Inhalation Toxicology
https://www.readbyqxmd.com/read/27913947/preclinical-evaluation-of-cathepsin-based-fluorescent-imaging-system-for-cytoreductive-surgery
#8
Carlos H F Chan, Lukas F Liesenfeld, Isabel Ferreiro-Neira, James C Cusack
BACKGROUND: Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) is a treatment option for peritoneal surface malignancies. The ability to detect microscopic foci of peritoneal metastasis intraoperatively may ensure the completeness of cytoreduction. In this study, we evaluated the suitability of a hand-held cathepsin-based fluorescent imaging system for intraoperative detection of appendiceal and colorectal peritoneal metastasis. METHODS: Peritoneal tumors and normal peritoneal tissues were collected from patients with appendiceal and colorectal peritoneal metastasis...
December 2, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27913632/intracellular-activation-of-complement-3-is-responsible-for-intestinal-tissue-damage-during-mesenteric-ischemia
#9
Abhigyan Satyam, Lakshmi Kannan, Naoya Matsumoto, Mayya Geha, Peter H Lapchak, Robin Bosse, Guo-Ping Shi, Jurandir J Dalle Lucca, Maria G Tsokos, George C Tsokos
Intestinal ischemia followed by reperfusion leads to local and remote organ injury attributed to inflammatory response during the reperfusion phase. The extent to which ischemia contributes to ischemia/reperfusion injury has not been thoroughly studied. After careful evaluation of intestinal tissue following 30 min of ischemia, we noticed significant local mucosal injury in wild-type mice. This injury was drastically reduced in C3-deficient mice, suggesting C3 involvement. Depletion of circulating complement with cobra venom factor eliminated, as expected, injury recorded at the end of the reperfusion phase but failed to eliminate injury that occurred during the ischemic phase...
December 2, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27913303/an-mtorc1-akt1-cathepsin-h-axis-controls-filaggrin-expression-and-processing-in-skin-a-novel-mechanism-for-skin-barrier-disruption-in-atopic-dermatitis
#10
Aishath S Naeem, Cristina Tommasi, Christian Cole, Stuart J Brown, Yanan Zhu, Benjamin Way, Saffron Ag Willis Owen, Miriam Moffatt, William O Cookson, John I Harper, Di Wl, Sara J Brown, Thomas Reinheckel, Ryan F L O'Shaughnessy
BACKGROUND: Filaggrin, encoded by the FLG gene, is an important component of the skin's barrier to the external environment and genetic defects in FLG strongly associate with Atopic Dermatitis (AD). However, not all AD patients have FLG mutations. OBJECTIVE: We hypothesised that these patients may possess other defects in filaggrin expression and processing, contributing to barrier disruption and AD, and therefore present novel therapeutic targets for this disease...
November 29, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27913299/the-inhibitory-effect-of-beta-lapachone-on-rankl-induced-osteoclastogenesis
#11
Dong Ryun Gu, Joon No Lee, Gi-Su Oh, Hyung Jin Kim, Min Seuk Kim, Seoung Hoon Lee
β-lapachone (β-L) is a substrate of reduced nicotinamide adenine dinucleotide (NADH): quinone oxidoreductase 1 (NQO1). NQO1 reduces quinones to hydroquinones using NADH as an electron donor and consequently increases the intracellular NAD+/NADH ratio. The activation of NQO1 by β-L has beneficial effects on several metabolic syndromes, such as obesity, hypertension, and renal injury. However, the effect of β-L on bone metabolism remains unclear. Here, we show that β-L might be a potent inhibitor of receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis...
November 30, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27913297/phospholipase-c%C3%AE-1-suppresses-foreign-body-giant-cell-formation-by-maintaining-runx1-expression-in-macrophages
#12
Ye Seon Kim, Chang Youp Ok, Joon Seong Park, Ha Young Lee, Yoe-Sik Bae
Foreign body giant cell (FBGC) formation is associated with the inflammatory response following material implantation. However, the intracellular signaling events that regulate the process remain unclear. Here, we investigated the potential role of phospholipase C (PLC)γ1, a crucial enzyme required for growth factor-induced signaling, on FBGC formation. Knock-down of PLCγ1 using shRNA induced FBGC formation accompanied by increased expression of cathepsin K, DC-STAMP and CD36. Re-addition of PLCγ1 decreased FBGC formation...
November 29, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27910947/renal-cell-carcinoma-with-tfe3-translocation-and-succinate-dehydrogenase-b-mutation
#13
Anna Calió, David J Grignon, Bradley A Stohr, Sean R Williamson, John N Eble, Liang Cheng
Translocation renal cell carcinoma and succinate dehydrogenase (SDH)-deficient renal cell carcinoma are now recognized as specific renal tumor types in the World Health Organization (WHO) classification. Both have limited immunohistochemical positivity for epithelial markers, and the spectrum of morphology continues to widen for both of these entities. We identified four renal cell carcinomas with positive TFE3 immunohistochemical staining and negative SDHB staining. The patients (2F, 2M) ranged in age from 19 to 65 years...
December 2, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27908790/mpp-inhibits-mglur1-5-mediated-long-term-depression-in-mouse-hippocampus-by-calpain-activation
#14
Junyao Li, Hui Chen, Shengbing Wu, Yuefa Cheng, Qinglin Li, Jing Wang, Guoqi Zhu
Neurotoxins are harmful to nervous system and cause either neuronal cell death or impairment of synaptic activity, which contributes to Parkinson's disease or other neuronal disorders. Hippocampal synaptic plasticity was proposed as a cellular model for memory processing. In this study, we reported a novel effect of neurotoxin, 1-methyl-4-phenylpyridinium (MPP(+)), on metabotropic glutamate receptor 1/5 agonist, 3,5-dihydroxyphenylglycine (DHPG)-induced hippocampal synaptic plasticity, and MPP(+) incubation blocked DHPG-induced hippocampal long-term depression (LTD) in Schaffer collateral-CA1 synapses...
November 29, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27908759/cathepsin-nanofiber-substrates-as-potential-agent-for-targeted-drug-delivery
#15
Yael Ben-Nun, Galit Fichman, Lihi Adler-Abramovich, Boris Turk, Ehud Gazit, Galia Blum
The development of reactive drug carriers that could actively respond to biological signals is a challenging task. Different peptides can self-assemble into biocompatible nanostructures of various functionalities, including drugs carriers. Minimal building blocks, such as diphenylalanine, readily form ordered nanostructures. Here we present development of self-assembled tetra-peptides that include the diphenylalanine motif, serving as substrates of the cathepsin proteases. This is of great clinical importance as cathepsins, whose activity and expression are highly elevated in cancer and other pathologies, have been shown to serve as efficient enzymes for therapeutic release...
November 28, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27908708/chlorogenic-acid-ameliorates-isoproterenol-induced-myocardial-injury-in-rats-by-stabilizing-mitochondrial-and-lysosomal-enzymes
#16
Palaniyandi Akila, Lourthurani Asaikumar, Lakshmanan Vennila
This study was deliberated to aspire the effects of chlorogenic acid (CGA) against myocardial infarction (MI) induced by Isoproterenol (ISO), in a rat model. In the pathology of MI, enzymes released due to the mitochondrial and lysosomal lipid peroxidation play an integral role. Induction of rats with ISO (85mg/kg BW) for 2 consecutive days resulted in a significant decrease in the activities of heart mitochondrial enzymes isocitrate dehydrogenase (ICDH), α-ketoglutarate dehydrogenase (α-KGDH), succinate dehydrogenase (SDH) and malate dehydrogenase (MDH)...
November 28, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27907185/antioxidant-antimicrobial-and-cytotoxic-properties-as-well-as-the-phenolic-content-of-the-extract-from-hancornia-speciosa-gomes
#17
Uilson P Santos, Jaqueline F Campos, Heron Fernandes V Torquato, Edgar Julian Paredes-Gamero, Carlos Alexandre Carollo, Leticia M Estevinho, Kely de Picoli Souza, Edson Lucas Dos Santos
Hancornia speciosa Gomes (Apocynaceae) is a fruit tree, popularly known as mangabeira, and it is widely distributed throughout Brazil. Several parts of the plant are used in folk medicine, and the leaf and bark extracts have anti-inflammatory, antihypertensive, antidiabetic, and antimicrobial properties. In this study, we investigated the chemical composition of the ethanolic extract of Hancornia speciosa leaves (EEHS) and its antioxidant, antimicrobial, and cytotoxic activities as well as the mechanisms involved in cell death...
2016: PloS One
https://www.readbyqxmd.com/read/27904045/puerarin-prevents-lps-induced-osteoclast-formation-and-bone-loss-via-inhibition-of-akt-activation
#18
Yun Zhang, Ming Yan, Qing-Feng Yu, Pei-Fan Yang, Hai-Dong Zhang, Yong-Hong Sun, Zhi-Fen Zhang, Yun-Feng Gao
Osteolysis induced by chronic Gram-negative bacterial infection underlies many bone diseases such as osteomyelitis, septic arthritis, and periodontitis. Drugs that inhibit lipopolysaccharide (LPS)-induced osteolysis are critically needed for the prevention of bone destruction in infective bone diseases. In this study, we assessed the effect of puerarin, a natural isoflavone isolated from Pueraria lobata OHWI root, on LPS-induced osteoclastogenesis and bone loss. Our in vitro study showed that puerarin significantly inhibited LPS-induced osteoclast differentiation from osteoclast precursor RAW264...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27903071/reduced-levels-and-bioactivity-of-endogenous-protease-cathepsin-d-in-genital-tract-secretions-of-postmenopausal-women
#19
Mariel Jais, Naji Younes, Stacey Chapman, Susan Cu-Uvin, Mimi Ghosh
PROBLEM: HIV infections are increasing in older adult populations. Although it is known that the HIV/AIDS epidemics affect women disproportionately, little is known regarding immune responses in reproductive tract of postmenopausal women, specifically regarding endogenous proteases that modulate inflammation, tissue remodeling and wound healing. METHOD OF STUDY: Levels and bioactivity of endogenous proteases Cathepsin B, D, G, and Neutrophil Elastase were measured in cervical vaginal lavage collected from 20 HIV-negative pre- and postmenopausal women...
November 30, 2016: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/27902959/kaempferol-a-phytoestrogen-suppressed-triclosan-induced-epithelial-mesenchymal-transition-and-metastatic-related-behaviors-of-mcf-7-breast-cancer-cells
#20
Geum-A Lee, Kyung-Chul Choi, Kyung-A Hwang
As a phytoestrogen, kaempferol is known to play a chemopreventive role inhibiting carcinogenesis and cancer progression. In this study, the influences of triclosan, an anti-bacterial agent recently known for an endocrine disrupting chemical (EDC), and kaempferol on breast cancer progression were examined by measuring their effects on epithelial-mesenchymal transition (EMT) and metastatic-related behaviors of MCF-7 breast cancer cells. Morphological changes of MCF-7 cells were observed, and a wound-healing assay was performed after the treatment of triclosan and kaempferol...
November 22, 2016: Environmental Toxicology and Pharmacology
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