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https://www.readbyqxmd.com/read/29329518/the-use-of-eculizumab-in-gemcitabine-induced-thrombotic-microangiopathy
#1
Vinod Krishnappa, Mohit Gupta, Haikoo Shah, Abhijit Das, Natthavat Tanphaichitr, Robert Novak, Rupesh Raina
BACKGROUND: Thrombotic microangiopathy (TMA) secondary to gemcitabine therapy (GiTMA) is a very rare pathology that carries a poor prognosis, with nearly half of the cases progressing to end stage renal disease. GiTMA is most commonly associated with adenocarcinomas, most notably pancreatic cancers. The mainstay of management is withdrawal of the offending drug and supportive care. Plasmapheresis has a limited role and hemodialysis may help in the management of fluid overload secondary to renal failure...
January 12, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29318561/analysis-of-somatic-dna-methylation-alterations-of-genes-encoding-cell-surface-metallopeptidases-in-colorectal-cancer
#2
Sergio Alonso, Beatriz González, Andreu Alibés, Manuel Perucho
The genome of cancer cells accumulates numerous genetic and epigenetic somatic alterations ultimately conferring capabilities for unrestrained growth, invasion of local tissues, migration, and colonization of distant organs. Many of these new capabilities require the disruption of the cell-to-cell interactions between the cancer cell and its microenvironment. These interactions are mediated, among other factors, by the activity of extracellular enzymes that reshape not only the extracellular compartment of the cancer cells but also that of the neighboring non-cancerous stroma cells...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29318554/evaluation-of-tumor-vasculature-using-a-syngeneic-tumor-model-in-wild-type-and-genetically-modified-mice
#3
Francisco Javier Rodríguez-Baena, Silvia Redondo-García, María Del Carmen Plaza-Calonge, Rubén Fernández-Rodríguez, Juan Carlos Rodríguez-Manzaneque
The relevance of tumor vasculature has been extensively recognized, and it is still the focus of numerous lines of research for basic, translational, and clinical scientists. Indeed, the knowledge of some of its regulatory mechanisms has provoked the generation of ongoing cancer therapies. Within the context of the tumor microenvironment, the information that the analysis of the vasculature provides is very valuable, and it might reveal not just its quality and the response against a specific therapy but also its close relationship with neighboring stromal and tumor players...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29315262/intraarticularly-injected-mesenchymal-stem-cells-stimulate-anti-inflammatory-molecules-and-inhibit-pain-related-protein-and-chondrolytic-enzymes-in-a-monoiodoacetate-induced-rat-arthritis-model
#4
Toru Ichiseki, Miyako Shimazaki, Yoshimichi Ueda, Shusuke Ueda, Masanobu Tsuchiya, Daisuke Souma, Ayumi Kaneuji, Norio Kawahara
Persistent inflammation is well known to promote the progression of arthropathy. mesenchymal stem cells (MSCs) have been shown to possess anti-inflammatory properties and tissue differentiation potency. Although the experience so far with the intraarticular administration of mesenchymal stem cell (MSC) to induce cartilage regeneration has been disappointing, MSC implantation is now being attempted using various surgical techniques. Meanwhile, prevention of osteoarthritis (OA) progression and pain control remain important components of the treatment of early-stage OA...
January 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29291551/ghrelin-prevents-articular-cartilage-matrix-destruction-in-human-chondrocytes
#5
REVIEW
Jie Liu, Lie Cao, Xueming Gao, Zhixin Chen, Shifang Guo, Zongru He, Yaowen Qian, Yongzhi Yu, Gang Wang
Osteoarthritis (OA) is the most common form of arthritis worldwide. Excessive production of pro-inflammatory cytokines such as interleukin-1β (IL-1β) plays a key role in the pathogenesis of OA. OA is generally characterized by degradation of extracellular matrixes such as type II collagen and aggrecans mediated by matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS). Ghrelin is a secreted peptide hormone regulating appetite and the distribution and rate of use of energy...
December 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29285095/kaempferol-targets-estrogen-related-receptor-%C3%AE-and-suppresses-the-angiogenesis-of-human-retinal-endothelial-cells-under-high-glucose-conditions
#6
Yan Wu, Qinmei Zhang, Rui Zhang
Diabetic retinopathy (DR) is the most common complication of diabetes and a major cause of new-onset blindness in the developed world. The present study aimed to examine the effect of kaempferol on high glucose-induced human retinal endothelial cells (HRECs) in vitro. The expression levels of various mRNAs and proteins were measured by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blotting, respectively. The target of kaempferol was determined using a luciferase reporter assay...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29258803/antioxidant-functionalized-polymer-capsules-to-prevent-oxidative-stress
#7
Aitor Larrañaga, Isma Liza Mohd Isa, Vaibhav Patil, Sagana Thamboo, Mihai Lomora, Marc A Fernández-Yague, Jose-Ramon Sarasua, Cornelia G Palivan, Abhay Pandit
Polymeric capsules exhibit significant potential for therapeutic applications as microreactors, where the bio-chemical reactions of interest are efficiently performed in a spatial and time defined manner due to the encapsulation of an active biomolecule (e.g., enzyme) and control over the transfer of reagents and products through the capsular membrane. In this work, catalase loaded polymer capsules functionalized with an external layer of tannic acid (TA) are fabricated via a layer-by-layer approach using calcium carbonate as a sacrificial template...
December 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29247327/il-21-enhances-the-degradation-of-cartilage-through-the-jak-stat-signaling-pathway-during-osteonecrosis-of-femoral-head-cartilage
#8
Bin Chen, Yi Liu, Lei Cheng
This study aims to investigate the role of interleukin-21 (IL-21) in the mechanism of osteonecrosis of the femoral head. The serum content of IL-21 in patients with osteonecrosis of the femoral head (ONFH) and with femoral neck fracture (FNF) was examined by an enzyme-linked immunosorbent assay (ELISA). The cartilage specimens were stained with safranin-O. The expression of IL-21, tumor necrosis factor-α (TNF-α), cyclooxygenase (COX-2), a disintegrin and metalloproteinase with thrombospondin motifs 4 (ADAMTS-4), matrix metalloproteinase-13(MMP-13), and aggrecan in the cartilage was detected, by immunohistochemistry and western blot analysis...
December 15, 2017: Inflammation
https://www.readbyqxmd.com/read/29246219/cellular-pharmacodynamic-effects-of-pycnogenol%C3%A2-in-patients-with-severe-osteoarthritis-a-randomized-controlled-pilot-study
#9
Steffen Jessberger, Petra Högger, Franca Genest, Donald M Salter, Lothar Seefried
BACKGROUND: The standardized maritime pine bark extract (Pycnogenol®) has previously shown symptom alleviating effects in patients suffering from moderate forms of knee osteoarthritis (OA). The cellular mechanisms for this positive impact are so far unknown. The purpose of the present randomized pilot controlled study was to span the knowledge gap between the reported clinical effects of Pycnogenol® and its in vivo mechanism of action in OA patients. METHODS: Thirty three patients with severe OA scheduled for a knee arthroplasty either received 100 mg of Pycnogenol® twice daily or no treatment (control group) three weeks before surgery...
December 16, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29245931/silibinin-protects-against-osteoarthritis-through-inhibiting-the-inflammatory-response-and-cartilage-matrix-degradation-in-vitro-and-in-vivo
#10
Wenhao Zheng, Zhenhua Feng, Yiting Lou, Chunhui Chen, Chuanxu Zhang, Zhenyu Tao, Hang Li, Liang Cheng, Xiaozhou Ying
Osteoarthritis (OA) is a degenerative joint disease characterized by cartilage degradation and inflammation. Silibinin, a polyphenolic flavonoid derived from fruits and seeds of Silybum marianum, has been reported to possess various potent beneficial biological effects, such as antioxidant, anti-cancer, hepatoprotective and anti-inflammatory activities. However, the anti-inflammatory effects of silibinin on OA have not been reported. This study aimed to assess the effects of silibinin on OA both in vitro and in vivo...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29241192/microrna-92a-3p-regulates-aggrecanase-1-and-aggrecanase-2-expression-in-chondrogenesis-and-il-1%C3%AE-induced-catabolism-in-human-articular-chondrocytes
#11
Guping Mao, Peihui Wu, Ziji Zhang, Zhiqi Zhang, Weiming Liao, Yukang Li, Yan Kang
BACKGROUND/AIMS: Aggrecanase-1 (ADAMTS-4) and aggrecanase-2 (ADAMTS-5) are secreted enzymes belonging to the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) family that play significant roles in the progression of osteoarthritis (OA). Here, we aimed to determine whether the expression of ADAMTS-4/5 in chondrogenesis and inflammation is regulated by microRNA-92a-3p (miR-92a-3p). METHODS: MiR-92a-3p and ADAMTS-4/5 expressions were determined by quantitative polymerase chain reaction (qPCR)...
November 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29236314/il-1%C3%AE-induced-mir-34a-up-regulation-inhibits-cyr61-to-modulate-osteoarthritis-chondrocyte-proliferation-through-adamts-4
#12
Bo Yang, Jiangdong Ni, Hui Long, Jun Huang, Cheng Yang, Xianzhe Huang
Osteoarthritis (OA) is the most prevalent degenerative joint disease with multifactorial etiology caused by risk factors. The degradation of aggrecan by upregulated ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) is the key event in the development of OA. ADAMTS-4 contributes to aggrecan degradation in human OA. Cysteine-rich angiogenic inducer 61 (Cyr61), which is associated with diseases related to chronic inflammation, is found in articular cartilage from patients with osteoarthritis and appears to suppress ADAMTS-4 activity, possibly leading to chondrocyte cloning...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236309/leptin-induces-mmp1-13-and-adamts-4-expressions-through-bone-morphogenetic-protein-2-autocrine-effect-in-human-chondrocytes
#13
Yu-Ping Su, Cheng-Nan Chen, Kuo-Chin Huang, Hsin-I Chang, Ko-Chao Lee, Chun-Min Lo, Shun-Fu Chang
The induction of bone morphogenetic protein (BMP) 2 in injured and arthritis articular cartilage has been proposed, but the precise mechanism has not been clearly clarified. Our previous study has found that leptin could stimulate the BMP2 autocrine effect to increase the anabolic collagen II expression when it initiates the catabolic response in human chondrocytes. It has been suggested that this BMP2 autocrine effect contributes to a reparative role in leptin-stimulated human chondrocytes. In this study, we further determined whether this BMP2 autocrine effect also affect the expressions of catabolic matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinase with thrombospondin motif (ADAMTS)...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29222454/stromal-versican-regulates-tumor-growth-by-promoting-angiogenesis
#14
Keiichi Asano, Courtney M Nelson, Sumeda Nandadasa, Noriko Aramaki-Hattori, Daniel J Lindner, Tyler Alban, Junko Inagaki, Takashi Ohtsuki, Toshitaka Oohashi, Suneel S Apte, Satoshi Hirohata
The proteoglycan versican is implicated in growth and metastases of several cancers. Here we investigated a potential contribution of stromal versican to tumor growth and angiogenesis. We initially determined versican expression by several cancer cell lines. Among these, MDA-MB231 and B16F10 had none to minimal expression in contrast to Lewis lung carcinoma (LLC). Notably, tumors arising from these cell lines had higher versican levels than the cell lines themselves suggesting a contribution from the host-derived tumor stroma...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208967/a-selective-inhibition-of-c-fos-activator-protein-1-as-a-potential-therapeutic-target-for-intervertebral-disc-degeneration-and-associated-pain
#15
Hiroto Makino, Shoji Seki, Yasuhito Yahara, Shunichi Shiozawa, Yukihiko Aikawa, Hiraku Motomura, Makiko Nogami, Kenta Watanabe, Takeshi Sainoh, Hisakatsu Ito, Noriyuki Tsumaki, Yoshiharu Kawaguchi, Mitsuaki Yamazaki, Tomoatsu Kimura
Intervertebral disc (IVD) degeneration is a major cause of low back pain. The transcription factor c-Fos/Activator Protein-1 (AP-1) controls the expression of inflammatory cytokines and matrix metalloproteinases (MMPs) that contribute to the pathogenesis IVD degeneration. We investigated the effects of inhibition of c-Fos/AP-1 on IVD degeneration and associated pain. A selective inhibitor, T-5224, significantly suppressed the interleukin-1β-induced up-regulation of Mmp-3, Mmp-13 and Adamts-5 transcription in human nucleus pulposus cells and in a mouse explant culture model of IVD degeneration...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29194287/expression-of-adamts2-and-adamts5-in-the-salivary-gland-of-rats-after-radioiodine-therapy
#16
Murat Sadic, Koray Demirel, Sevil O Halacli, Emre Karakok, Gokhan Koca, Ozgur Ekinci, Kadir Demircan, Meliha Korkmaz
OBJECTIVE: The aim of this study was to investigate the presence of ADAMTS2 and ADAMTS5 in the salivary gland (SG) of rats after high-dose radioiodine therapy. METHODS: A total of 36 male Wistar albino rats were used for this study. Thirty-six male rats were divided randomly into six groups: control and five radioactive iodine (RAI) treatment groups of six rats each. All animals were killed. The evaluation of biodistribution and histopathological studies were carried out on the SGs removed...
November 29, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29186710/adamts9-is-silenced-by-epigenetic-disruption-in-colorectal-cancer-and-inhibits-cell-growth-and-metastasis-by-regulating-akt-p53-signaling
#17
Ling Chen, Jun Tang, Yixiao Feng, Shuman Li, Qin Xiang, Xiaoqian He, Guosheng Ren, Weiyan Peng, Tingxiu Xiang
BACKGROUND/AIMS: ADAMTS (disintegrin-like and metalloproteinase with thrombospondin motifs) proteins are extracellular zinc metalloproteinases that play an important role in extracellular matrix assembly and degradation, connective tissue structuring, angiogenesis, and cell migration. Multiple studies suggest that ADAMTS proteins (e.g. ADAMTS9) can act as tumor suppressors. In gastric, esophageal, and nasopharyngeal carcinomas ADAMTS9 is frequently down-regulated by promoter methylation...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29179445/adamts16-mutations-sensitize-ovarian-cancer-cells-to-platinum-based-chemotherapy
#18
Maya Yasukawa, Yuexin Liu, Limei Hu, David Cogdell, Kshipra M Gharpure, Sunila Pradeep, Archana S Nagaraja, Anil K Sood, Wei Zhang
Ovarian cancer is one of the most lethal malignant tumors in women. The prognosis of ovarian cancer patients depends, in part, on their response to platinum-based chemotherapy. Our recent analysis of genomics and clinical data from the Cancer Genome Atlas demonstrated that somatic mutations of ADAMTS 1, 6, 8, 9, 15, 16, 18 and L1 genes were associated with higher sensitivity to platinum and longer progression-free survival, overall survival, and platinum-free survival duration in 512 patients with high-grade serous ovarian carcinoma...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29169989/adamts18-deficiency-leads-to-visceral-adiposity-and-associated-metabolic-syndrome-in-mice
#19
Rui Zhu, Mengting Cheng, Tiantian Lu, Ning Yang, Shuai Ye, Yi-Hsuan Pan, Tao Hong, Suying Dang, Wei Zhang
Visceral adiposity is of greater risk than obesity in subcutaneous adipose tissue for diabetes and cardiovascular disease. Its pathogenesis remains unclear, but it is associated with extracellular matrix (ECM) remodeling. A disintegrin and metalloproteinase with thrombospondin motifs (ADAMTSs) are a family of secreted Zn-dependent metalloproteinases that play crucial roles in development and various diseases owing to their ECM remodeling activity. ADAMTS18 is an "orphan ADAMTS" whose function and substrate remain unclear...
November 20, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29168867/the-protective-effect-of-phloretin-in-osteoarthritis-an-in-vitro-and-in-vivo-study
#20
Wenhao Zheng, Chunhui Chen, Chuanxu Zhang, Leyi Cai, Hua Chen
Osteoarthritis (OA) is a degenerative joint disease characterized by the degradation and inflammation of cartilage. Phloretin, a type of dihydrochalcone mainly found in apples and apple-derived products, has been reported to possess various potent biological effects such as antioxidant, anticancer, anti-inflammatory, and immunomodulatory. However, the anti-inflammatory effects of phloretin on OA have not been reported. This study was aimed at assessing the effects of phloretin on human OA chondrocytes. Human OA chondrocytes were pretreated with phloretin (10, 30, and 100 μM) for 2 h and subsequently stimulated with IL-1β for 24 h...
November 23, 2017: Food & Function
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