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https://www.readbyqxmd.com/read/28918442/the-role-of-periostin-in-lung-fibrosis-and-airway-remodeling
#1
REVIEW
David N O'Dwyer, Bethany B Moore
Periostin is a protein that plays a key role in development and repair within the biological matrix of the lung. As a matricellular protein that does not contribute to extracellular matrix structure, periostin interacts with other extracellular matrix proteins to regulate the composition of the matrix in the lung and other organs. In this review, we discuss the studies exploring the role of periostin to date in chronic respiratory diseases, namely asthma and idiopathic pulmonary fibrosis. Asthma is a major health problem globally affecting millions of people worldwide with significant associated morbidity and mortality...
September 16, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28918041/gapmer-antisense-oligonucleotides-suppress-the-mutant-allele-of-col6a3-and-restore-functional-protein-in-ullrich-muscular-dystrophy
#2
Elena Marrosu, Pierpaolo Ala, Francesco Muntoni, Haiyan Zhou
Dominant-negative mutations in the genes that encode the three major α chains of collagen type VI, COL6A1, COL6A2, and COL6A3, account for more than 50% of Ullrich congenital muscular dystrophy patients and nearly all Bethlem myopathy patients. Gapmer antisense oligonucleotides (AONs) are usually used for gene silencing by stimulating RNA cleavage through the recruitment of an endogenous endonuclease known as RNase H to cleave the RNA strand of a DNA-RNA duplex. In this study, we exploited the application of the allele-specific silencing approach by gapmer AON as a potential therapy for Collagen-VI-related congenital muscular dystrophy (COL6-CMD)...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28918026/anti-fibrotic-effects-of-synthetic-oligodeoxynucleotide-for-tgf-%C3%AE-1-and-smad-in-an-animal-model-of-liver-cirrhosis
#3
Jung-Yeon Kim, Hyun-Jin An, Woon-Hae Kim, Mi-Gyeong Gwon, Hyemin Gu, Yoon-Yub Park, Kwan-Kyu Park
Liver fibrosis is characterized by changes in tissue architecture and extracellular matrix composition. Liver fibrosis affects not only hepatocytes but also the non-parenchymal cells such as hepatic stellate cells (HSCs), which are essential for maintaining an intact liver structure and function. Transforming growth factor β1 (TGF-β1) is a multifunctional cytokine that induces liver fibrosis through activation of Smad signaling pathways. To improve a new therapeutic approach, synthetic TGF-β1/Smad oligodeoxynucleotide (ODN) was used to suppress both TGF-β1 expression and Smad transcription factor using a combination of antisense ODN and decoy ODN...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28917911/injectable-glycosaminoglycan-protein-nano-complex-in-semi-interpenetrating-networks-a-biphasic-hydrogel-for-hyaline-cartilage-regeneration
#4
Janani Radhakrishnan, Anuradha Subramanian, Swaminathan Sethuraman
Articular hyaline cartilage regeneration remains challenging due to its less intrinsic reparability. The study develops injectable biphasic semi-interpenetrating polymer networks (SIPN) hydrogel impregnated with chondroitin sulfate (ChS) nanoparticles for functional cartilage restoration. ChS loaded zein nanoparticles (∼150nm) prepared by polyelectrolyte-protein complexation were interspersed into injectable SIPNs developed by blending alginate with poly(vinyl alcohol) and calcium crosslinking. The hydrogel exhibited interconnected porous microstructure (39...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917875/collagen-and-hyaluronic-acid-hydrogel-in-water-in-oil-microemulsion-delivery-systems
#5
Sylwia Kupper, Ilona Kłosowska-Chomiczewska, Patrycja Szumała
The increase in skin related health issues has promoted interest in research on the efficacy of microemulsion in dermal and transdermal delivery of active ingredients. Here, we assessed the water-in-oil microemulsion capacity to incorporate two natural polymers, i.e. collagen and hyaluronic acid with low and high molecular weight. Systems were extensively characterized in terms of conductivity, phase inversion studies, droplet diameter, polydispersity index and rheological properties. The results of this research indicate that the structure and extent of water phase in microemulsions is governed by ratio and amount of surfactant mixture (sorbitan ester derivatives)...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917781/fluorescence-self-quenching-assay-for-the-detection-of-target-collagen-sequences-using-a-short-probe-peptide
#6
Linge Nian, Yue Hu, Caihong Fu, Chen Song, Jie Wang, Jianxi Xiao
The development of novel assays to detect collagen fragments is of utmost importance for diagnostic, prognostic and therapeutic decisions in various collagen-related diseases, and one essential question is to discover probe peptides that can specifically recognize target collagen sequences. Herein we have developed the fluorescence self-quenching assay as a convenient tool to screen the capability of a series of fluorescent probe peptides of variable lengths to bind with target collagen peptides. We have revealed that the targeting ability of probe peptides is length-dependent, and have discovered a relatively short probe peptide FAM-G(POG)8 capable to identify the target peptide...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917186/compounds-isolated-from-eriobotrya-deflexa-leaves-protect-against-ultraviolet-radiation-b-induced-photoaging-in-human-fibroblasts
#7
Chung-Yu Huang, Yi-Tzu Lin, Hsiang-Chun Kuo, Wen-Fei Chiou, Mei-Hsien Lee
Ultraviolet (UV) irradiation leads to skin photoaging because of the upregulation of matrix metalloproteinase (MMP)-1 and downregulation of type I collagen and tissue inhibitor of metalloproteinase (TIMP)-1. Eriobotrya deflexa (Hemsl.) Nakai (Rosaceae) is a flowering plant endemic to Taiwan, and its leaves have been used as an expectorant and in antitussive folk remedy. Our previous studies have demonstrated that an E. deflexa leaf extract functions as a free radical scavenger. The current evaluated the antiphotoaging effect of partitioned fractions and specific compounds from the leaves of E...
September 4, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28917083/effects-of-single-or-combined-administration-of-salmon-calcitonin-and-omega-3-fatty-acids-versus-diclofenac-sodium-in-sodium-monoiodoacetate-induced-knee-osteoarthritis-in-male-wistar-rats
#8
Wale J Adeyemi, Luqman A Olayaki
BACKGROUND: There is a continuous search for a better therapy in osteoarthritis (OA) management. Therefore, this study investigated the effects of salmon calcitonin (Sct) and/or omega-3 fatty acids (N-3) relative to diclofenac sodium (DF) in induced knee osteoarthritic male Wistar rats. METHODS: The 40 rats that were used in this study were divided into 8 groups (n=5 rats), viz: Normal control; OA control; OA+N-3; OA+Low dose of Sct (Sct.Lw); OA+High dose of Sct (Sct...
September 16, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28916838/functionally-distinct-tendons-from-elastin-haploinsufficient-mice-exhibit-mild-stiffening-and-tendon-specific-structural-alteration
#9
Jeremy D Eekhoff, Fei Fang, Lindsey G Kahan, M G Espinosa, Austin J Cocciolone, Jessica E Wagenseil, Robert P Mecham, Spencer P Lake
Elastic fibers are present in low quantities in tendon, where they are located both within fascicles near tenocytes and more broadly in the interfascicular matrix. While elastic fibers have long been known to be significant in the mechanics of elastin-rich tissue (i.e. vasculature, skin, lungs), recent studies have suggested a mechanical role for elastic fibers in tendons that is dependent on specific tendon function. However, the exact contribution of elastin to properties of different types of tendons (e...
September 16, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28916836/modelling-the-deformation-of-the-elastin-network-in-aortic-valve
#10
Afshin Anssari-Benam, Andrea Bucchi
This paper is concerned with proposing a suitable structurally-motivated strain energy function for modelling the deformation of the elastin network within the aortic valve (AV) tissue. The AV elastin network is the main non-collagenous load-bearing component of the valve matrix and therefore, within the context of continuum-based modelling of the AV, it essentially serves as the contribution of the 'isotropic matrix'. To date, such function has mainly been considered as either a generic neo-Hookean term or a general exponential function...
September 16, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28916811/an-enu-induced-splice-site-mutation-of-mouse-col1a1-causing-recessive-osteogenesis-imperfecta-and-revealing-a-novel-splicing-rescue
#11
Koichi Tabeta, Xin Du, Kei Arimatsu, Mai Yokoji, Naoki Takahashi, Norio Amizuka, Tomoka Hasegawa, Karine Crozat, Tomoki Maekawa, Sayuri Miyauchi, Yumi Matsuda, Takako Ida, Masaru Kaku, Kasper Hoebe, Kinji Ohno, Hiromasa Yoshie, Kazuhisa Yamazaki, Eva Marie Y Moresco, Bruce Beutler
GU-AG consensus sequences are used for intron recognition in the majority of cases of pre-mRNA splicing in eukaryotes. Mutations at splice junctions often cause exon skipping, short deletions, or insertions in the mature mRNA, underlying one common molecular mechanism of genetic diseases. Using N-ethyl-N-nitrosourea, a novel recessive mutation named seal was produced, associated with fragile bones and susceptibility to fractures (spine and limbs). A single nucleotide transversion (T → A) at the second position of intron 36 of the Col1a1 gene, encoding the type I collagen, α1 chain, was responsible for the phenotype...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916223/bet-bromodomain-inhibitors-modulate-epigenetic-patterns-at-the-diacylglycerol-kinase-alpha-enhancer-associated-with-radiation-induced-fibrosis
#12
Gintvile Valinciute, Christoph Weigel, Marlon R Veldwijk, Christopher C Oakes, Carsten Herskind, Frederik Wenz, Christoph Plass, Peter Schmezer, Odilia Popanda
BACKGROUND AND PURPOSE: Fibrosis is a frequent adverse effect of radiotherapy and no effective treatments are currently available to prevent or reverse fibrotic disease. We have previously identified altered epigenetic patterns at a gene enhancer of the diacylglycerol kinase alpha (DGKA) locus in normal skin fibroblasts derived from fibrosis patients. An open chromatin pattern related to radiation-inducibility of DGKA is associated with onset of radiation-induced fibrosis. Here, we explore epigenetic modulation of DGKA as a way to mitigate predisposition to fibrosis...
September 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28916165/muc1-deficiency-exacerbates-pulmonary-fibrosis-in-a-mouse-model-of-silicosis
#13
Kosuke Kato, Marina A Zemskova, Alec D Hanss, Marianne M Kim, Sandra J Gendler, Ross Summer, Kwang Chul Kim
BACKGROUND: MUC1 (MUC in human and Muc in animals) is a membrane-tethered mucin expressed on the apical surface of lung epithelial cells. However, in the lungs of patients with interstitial lung disease, MUC1 is aberrantly expressed in hyperplastic alveolar type II epithelial (ATII) cells and alveolar macrophages (AM), and elevated levels of extracellular MUC1 are found in bronchoalveolar lavage (BAL) fluid and the serum of these patients. While pro-fibrotic effects of extracellular MUC1 have recently been described in cultured fibroblasts, the contribution of MUC1 to the pathobiology of pulmonary fibrosis is unknown...
September 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28916043/nocturnal-hypoglycemic-alarm-based-on-near-infrared-spectroscopy-in%C3%A2-vitro-simulation-studies
#14
Sanjeewa R Karunathilaka, Gary W Small
An alarm algorithm for detecting episodes of nocturnal hypoglycemia is demonstrated in simulation studies that incorporate the use of a tissue phantom. Based on transmission spectra collected in the near-infrared combination region of 4000-5000 cm(-1), pattern recognition methods are used to classify spectra into alarm and non-alarm data classes on the basis of whether or not they signify a glucose excursion below a user-defined hypoglycemic alarm threshold. A reference spectrum and corresponding glucose concentration are acquired at the start of the monitoring period, and absorbance values of subsequent spectra are computed relative to this reference...
September 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28915803/tartrate-resistant-acid-phosphatase-trap-acp5-promotes-metastasis-related-properties-via-tgf%C3%AE-2-t%C3%AE-r-and-cd44-in-mda-mb-231-breast-cancer-cells
#15
Anja Reithmeier, Elena Panizza, Michael Krumpel, Lukas M Orre, Rui M M Branca, Janne Lehtiö, Barbro Ek-Rylander, Göran Andersson
BACKGROUND: Tartrate-resistant acid phosphatase (TRAP/ACP5), a metalloenzyme that is characteristic for its expression in activated osteoclasts and in macrophages, has recently gained considerable focus as a driver of metastasis and was associated with clinically relevant parameters of cancer progression and cancer aggressiveness. METHODS: MDA-MB-231 breast cancer cells with different TRAP expression levels (overexpression and knockdown) were generated and characterized for protein expression and activity levels...
September 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28915589/casticin-attenuates-liver-fibrosis-and-hepatic-stellate-cell-activation-by-blocking-tgf-%C3%AE-smad-signaling-pathway
#16
Ling Zhou, Xiaoying Dong, Linlin Wang, Lanlan Shan, Ting Li, Wanfu Xu, Yan Ding, Mingqiang Lai, Xiaojun Lin, Meng Dai, Xiaochun Bai, Chunhong Jia, Hang Zheng
Although many advances have been made in understanding the pathogenesis of liver fibrosis, few options are available for treatment. Casticin, one of the major flavonoids in Fructus Viticis extracts, has shown hepatoprotective potential, but its effects on liver fibrosis are not clear. In this study, we investigated the antifibrotic activity of casticin and its underlying mechanism in vivo and in vitro. Male mice were injected intraperitoneally with carbon tetrachloride (CCl4) or underwent bile duct ligation (BDL) to induce liver fibrosis, followed by treatment with casticin or vehicle...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915285/diluted-calcium-hydroxylapatite-for-skin-tightening-of-the-upper-arms-and-abdomen
#17
Natalia G Lapatina, Tatiana Pavlenko
BACKGROUND: The collagen-stimulating properties of Radiesse® (calcium hydroxylapatite, CaHA) can be used for skin-tightening procedures by hyper-diluting the product with lidocaine or saline. OBJECTIVE: To evaluate the effectiveness and safety of diluted CaHA for skin tightening in two case series of women with skin laxity in the upper arms or abdomen. METHODS: For each case series, 10 female subjects were enrolled. In the upper arms, CaHA diluted 1:2 with normal saline solution and 2% lidocaine was injected subdermally using a short, linear-threading technique...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28915283/clinical-evaluation-of-a-multi-modal-facial-serum-that-addresses-hyaluronic-acid-levels-in-skin
#18
Susana Raab, Margarita Yatskayer, Stephen Lynch, Megan Manco, Christian Oresajo
BACKGROUND: Hyaluronic acid (HA), the major glycosaminoglycan present in the human skin, is a key contributor to water retention and mechanical support in skin. The level, size, and functionality of cutaneous HA are known to diminish with age. Topical treatments designed to increase the HA content of skin have been met with limited success. The purpose of this study was to evaluate the tolerance and efficacy of a multi-modal facial serum containing HA, Proxylane (C-Xyloside), purple rice extract, and dipotassium glycyrrhizate in addressing HA levels in skin...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28915036/collagen-peptides-from-crucian-skin-improve-calcium-bioavailability-and-structure-characterization-by-hplc-esi-ms-ms
#19
Tao Hou, Yanshuang Liu, Danjun Guo, Bo Li, Hui He
The effects of collagen peptides (CPs), which are derived from crucian skin, were investigated in a retinoic acid-induced bone loss model. The serum bone alkaline phosphatase (BALP) in model group (117.65±4.66 U/L) was significantly higher compared to other three groups (P<0.05). After treatment with 600 and 1200 mg/kg CPs, BALP decreased to 85.26±7.35 and 97.03±7.21 U/L, respectively. After treatment with 600 mg/kg CPs, bone calcium content significantly increased by 22% (femur) and 12.38% (tibia) compared to model group...
September 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28914981/fna-cytology-of-solitary-fibrous-tumors-and-the-diagnostic-value-of-stat6-immunocytochemistry
#20
Edneia Tani, Johan Wejde, Kristina Åström, Inga-Lill Wingmo, Olle Larsson, Felix Haglund
BACKGROUND: Solitary fibrous tumors (SFTs) are rare mesenchymal tumors commonly located in the pleura, soft tissues, or meninges and are characterized by the NGFI-A-binding protein 2 (NAB2)-signal transducer and activator of transcription 6 (STAT6) fusion gene. Recent studies have indicated that nuclear STAT6 immunohistochemistry is a specific marker for SFTs. METHODS: The authors reviewed fine-needle aspiration (FNA) specimens from extracranial SFTs diagnosed at their institution between 1993 and 2017...
September 15, 2017: Cancer
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