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https://www.readbyqxmd.com/read/29461896/chronic-obstructive-pulmonary-disease-a-biomarker-and-a-potential-therapy
#1
Gerard M Turino
This article assesses developments in cardiorespiratory medicine since the Nobel Prize in Physiology or Medicine was awarded in 1956 for advancements in the study of cardiorespiratory disease. In chronic obstructive pulmonary disease, advances were accelerated by the discovery of a genetically determined cause for pulmonary emphysema in the genetic abnormality alpha-1 antitrypsin deficiency. This causes a deficiency of the inhibitor of neutrophil elastase, which results in increased degradation of lung elastin and the development of pulmonary emphysema...
February 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29458140/hyaluronan-in-adipogenesis-adipose-tissue-physiology-and-systemic-metabolism
#2
REVIEW
Yi Zhu, Ilja L Kruglikov, Yucel Akgul, Philipp E Scherer
Hyaluronic acid (HA, also known as hyaluronan), is a non-sulfated linear glycosaminoglycan polymer consisting of repeating disaccharide units of d-glucuronic acid and N-acetyl-d-glucosamine abundantly present in the extracellular matrix. The sizes of hyaluronic acid polymers range from 5000 to 20,000,000 Da in vivo, and the functions of HA are largely dictated by its size. Due to its high biocompatibility, HA has been commonly used as soft tissue filler as well as a major component of biomaterial scaffolds in tissue engineering...
February 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29456557/the-altered-expression-of-perineuronal-net-elements-during-neural-differentiation
#3
Nazli F Eskici, Sevim Erdem-Ozdamar, Didem Dayangac-Erden
Background: Perineuronal nets (PNNs), which are localized around neurons during development, are specialized forms of neural extracellular matrix with neuroprotective and plasticity-regulating roles. Hyaluronan and proteoglycan link protein 1 (HAPLN1), tenascin-R (TNR) and aggrecan (ACAN) are key elements of PNNs. In diseases characterized by neuritogenesis defects, the expression of these proteins is known to be downregulated, suggesting that PNNs may have a role in neural differentiation...
2018: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/29455388/heterologous-expression-of-rtshyal-1-the-first-recombinant-hyaluronidase-of-scorpion-venom-produced-in-pichia-pastoris-system
#4
Fernanda Gobbi Amorim, Johara Boldrini-França, Karla de Castro Figueiredo Bordon, Iara Aimê Cardoso, Edwin De Pauw, Loïc Quinton, Simone Kashima, Eliane Candiani Arantes
In general, hyaluronidases have a broad potential application on medicine and esthetics fields. Hyaluronidases from animal venoms cleave hyaluronan present in the extracellular matrix, acting as spreading factors of toxins into the tissues of the victim. However, the in-depth characterization of hyaluronidase from animal venoms has been neglected due to its instability and low concentration in the venom, which hamper its isolation. Thus, heterologous expression of hyaluronidase acts as a biotechnological tool in the obtainment of enough amounts of the enzyme for structural and functional studies...
February 17, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29448626/scaffolds-based-on-collagen-hyaluronan-and-sericin-with-potential-applications-as-controlled-drug-delivery-system
#5
Raluca Vulpe, Marcel Popa, Luc Picton, Catalina A Peptu, Nita Tudorachi, Liliana Verestiuc
Natural proteins have been extensively studied as matrices for tissue engineering, due to their excellent biocompatibility and biological properties associated with increasing cell proliferation. By generating complex materials, cell and tissue functions can be tailored to obtain a specific direction, according to the medical needs. The aim of this paper was to obtain scaffolds based on collagen, hyaluronan and sericin, with morphology and physical-chemical properties adequate for controlled drug delivery systems...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29443512/diels-alder-click-crosslinked-hydrogels-with-increased-reactivity-enable-3d-cell-encapsulation
#6
Laura J Smith, S Maryamdokht Taimoory, Roger Y Tam, Alexander E G Baker, Niema Binth Mohammad, John F Trant, Molly S Shoichet
Engineered hydrogels have been extensively used to direct cell function in 3D cell culture models, which are more representative of the native cellular microenvironment than conventional 2D cell culture. Previously, hyaluronan-furan and bis-maleimide polyethylene glycol hydrogels were synthesized via Diels-Alder chemistry at acidic pH, which did not allow encapsulation of viable cells. In order to enable gelation at physiological pH, the reaction kinetics were accelerated by replacing the hyaluronan-furan with the more electron-rich hyaluronan-methylfuran...
February 14, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29442293/recombinant-human-ph20-baseline-analysis-of-the-reactive-antibody-prevalence-in-the-general-population-using-healthy-subjects
#7
Sanna Rosengren, Jennifer Souratha, Dave Conway, Douglas B Muchmore, Barry J Sugarman
BACKGROUND: Recombinant human PH20 (rHuPH20) is used to depolymerize hyaluronan in the subcutaneous space, increasing the dispersion and absorption of co-administered drugs. While ~ 5 to 10% of rHuPH20 treatment-naïve healthy volunteers have demonstrated rHuPH20-reactive antibodies, associations with age, sex, fertility, and immune disorders remain unknown. OBJECTIVES: Using demographically diverse healthy volunteers, we assessed the prevalence of rHuPH20-reactive antibodies in the general population and potential associations with fertility and autoimmunity diseases...
February 13, 2018: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/29441417/the-adolescent-idiopathic-scoliotic-ivd-displays-advanced-aggrecanolysis-and-a-glycosaminoglycan-composition-similar-to-that-of-aged-human-and-ovine-ivds
#8
Cindy C Shu, James Melrose
PURPOSE: The present study was designed to ascertain how altered biomechanics in adolescent idiopathic scoliotic (AIS) intervertebral discs (IVDs) affected tissue compositions and aggrecan processing compared to age matched and aged human IVDs. Newborn, 2- and 10-year-old ovine IVDs were also examined. METHODS: Aggrecan populations were separated by Sepharose CL2B chromatography, composite agarose polyacrylamide gel electrophoresis (CAPAGE) and identified by immunoblotting...
February 13, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29440892/bioreducible-nanocapsules-for-folic-acid-assisted-targeting-and-effective-tumor-specific-chemotherapy
#9
Qiangying Yi, Jin Ma, Ke Kang, Zhongwei Gu
Introduction: Increasing demands in precise control over delivery and functionalization of therapeutic agents for tumor-specific chemotherapy have led to a rapid development in nanocarriers. Herein, we report a nanocapsule (NC) system for tumor-oriented drug delivery and effective tumor therapy. Materials and methods: Functionalized hyaluronan is utilized to build up the NC shells, in which bioreduction cleavable sites, targeting ligand folic acid (FA), and zwitterionic tentacles are integrated...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29438905/induction-of-systemic-inflammation-by-hyaluronan-and-hsp70-in-women-with-pre-eclampsia
#10
Mariana Romão-Veiga, Mariana Leticia Matias, Vanessa Rocha Ribeiro, Priscila Rezeck Nunes, Vera Therezinha M Borges, José Carlos Peraçoli, Maria Terezinha S Peraçoli
Pre-eclampsia (PE) is a human pregnancy syndrome with abnormal activation of the innate immune response. The study evaluated the involvement of molecular structures called damage-associated molecular patterns (DAMPs), such as hyaluronan (HA) and heat shock proteins (Hsp) on NLRP1 and NLRP3 inflammasomes activation in peripheral blood monocytes. Twenty pre-eclamptic women, 20 normotensive pregnant women (NT) and 20 non-pregnant women (NP) were studied. Enzyme immunoassay was employed for the determination of HA, Hsp70 and High mobility group Box 1 (HMGB1) in plasma, as well as for the detection of Interleukin-1β (IL-1β), IL-18 and tumor necrosis factor alpha (TNF-α) in the supernatant of monocytes cultured with or without HA and Hsp70...
February 10, 2018: Cytokine
https://www.readbyqxmd.com/read/29438729/hyaluronan-chemistries-for-three-dimensional-matrix-applications
#11
REVIEW
Monica A Serban, Aleksander Skardal
Hyaluronan is a ubiquitous constituent of mammalian extracellular matrices and, because of its excellent intrinsic biocompatibility and chemical modification versatility, has been widely employed in a multitude of biomedical applications. In this article, we will survey the approaches used to tailor hyaluronan to specific needs of tissue engineering, regenerative and reconstructive medicine and overall biomedical research. We will also describe recent examples of applications in these broader areas, such as 3D cell culture, bioprinting, organoid biofabrication, and precision medicine that are facilitated by the use of hyaluronan as a biomaterial...
February 10, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29425696/the-pericellular-hyaluronan-of-articular-chondrocytes
#12
REVIEW
Warren Knudson, Shinya Ishizuka, Kenya Terabe, Emily B Askew, Cheryl B Knudson
The story of hyaluronan in articular cartilage, pericellular hyaluronan in particular, essentially is also the story of aggrecan. Without properly tethered aggrecan, the load bearing function of cartilage is compromised. The anchorage of aggrecan to the cell surface only occurs due to the binding of aggrecan to hyaluronan-with hyaluronan tethered either to a hyaluronan synthase or by multivalent binding to CD44. In this review, details of hyaluronan synthesis are discussed including how HAS2 production of hyaluronan is necessary for normal chondrocyte development and matrix assembly, how an abundance or deficit of pericellular hyaluronan alters chondrocyte metabolism, and whether hyaluronan size matters or changes with aging or disease...
February 6, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29425695/hyaluronan-in-the-lymphatics-the-key-role-of-the-hyaluronan-receptor-lyve-1-in-leucocyte-trafficking
#13
REVIEW
David G Jackson
LYVE-1, a close relative of the leucocyte receptor, CD44, is the main receptor for hyaluronan (HA) in lymphatic vessel endothelium and a widely used marker for distinguishing between blood and lymphatic vessels. Enigmatic for many years because of its anomalous HA-binding characteristics, the function of LYVE-1 has just recently been identified as that of a lymphatic docking receptor for dendritic cells, selectively engaging with their surface HA glycocalyx to regulate entry to peripheral lymphatics and migration to downstream lymph nodes for immune activation...
February 6, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29425684/novel-ex-vivo-ovarian-cancer-tissue-explant-assay-for-prediction-of-chemosensitivity-and-response-to-novel-therapeutics
#14
Carmela Ricciardelli, Noor A Lokman, Ilhamjan Sabit, Kavyadharshini Gunasegaran, Wendy M Bonner, Carmen E Pyragius, Anne M Macpherson, Martin K Oehler
The majority of ovarian cancer patients present with advanced disease and despite aggressive treatment, prognosis remains poor. Response to first-line carboplatin-containing chemotherapy is usually good, however, recurrence rates and subsequent chemoresistance are very high and ultimately responsible for the fatal outcome of the disease. To improve treatment outcomes pre-clinical models that can predict individual patient response to 1st line chemotherapy and novel therapeutics are urgently required. In this study we employed an ex vivo ovarian cancer tissue explant assay to assess response to carboplatin and an inhibitor of the extracellular matrix molecule, hyaluronan (4-methylubelliferone, 4-MU), shown to inhibit cancer metastasis...
February 6, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29424292/cross-linked-hyaluronan-films-loaded-with-acetazolamide-cyclodextrin-triethanolamine-complexes-for-glaucoma-treatment
#15
Javier Adrián Calles, Maria Julia Mora, Renée Onnainty, Luis Ignacio Tartara, Gladys Ester Granero, Marcela Raquel Longhi, Yolanda Diebold, Enrique Marcelo Vallés, Santiago Daniel Palma
AIM: This work aimed to design and characterize cross-linked hyaluronic acid-itaconic acid films loaded with acetazolamide-hydroxypropyl β cyclodextrin-triethanolamine complexes. MATERIALS & METHODS: Films were cross-linked with itaconic acid and poly(ethyleneglycol)-diglycidylether. Biopharmaceutical properties were assessed by evaluating in vitro drug release rate, biocompatibility in a human corneal epithelial cell line, bioadhesiveness with pig gastric mucin, in vivo bioadhesion and efficacy...
February 1, 2018: Therapeutic Delivery
https://www.readbyqxmd.com/read/29421653/modulation-of-hyaluronan-polymer-size-regulates-proliferation-of-perimysial-fibroblasts-in-thyroid-eye-disease
#16
Ruiqi Ma, Qian Li, Zhongfeng Wang, Yifei Yuan, Lu Gan, Jiang Qian
In active thyroid eye disease (TED), the extraocular muscles feature excessive hyaluronan (HA) accumulation and increased fibroblast proliferation. To investigate the effects of HA on proliferation, we cultured perimysial fibroblasts from extraocular muscles of active TED patients, and adopted IGF-1 and PH20 as modulators for HA concentration and HA polymer size. Based on the results, IGF-1 increased HA concentration, promoted high molecular weight HA (HMW-HA) proportion and stimulated fibroblast proliferation...
February 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29420611/inductions-of-granulosa-cell-luteinization-and-cumulus-expansion-are-dependent-on-the-fibronectin-integrin-pathway-during-ovulation-process-in-mice
#17
Hiroya Kitasaka, Tomoko Kawai, S A Masudul Hoque, Takashi Umehara, Youko Fujita, Masayuki Shimada
It has been known that EGF-like factor secreted from LH-stimulated granuloma cells acts on granulosa cells and cumulus cells to induce ovulation process. Granulosa cells are changed the morphology with differentiating cell functions to produce progesterone. Cumulus cells are detached to make a space between the cells to accumulate hyaluronan rich matrix. LH also changes extracellular matrix (ECM) components including fibronectin in the follicular walls and granulosa cell layers. EGF like factor and fibronectin synergistically play important roles in numerous cell functions, especially cancer cell migration, estimating that fibronectin would impact on granulosa cells and cumulus cells...
2018: PloS One
https://www.readbyqxmd.com/read/29413599/hyaluronan-based-materials-with-catanionic-sugar-derived-surfactants-as-drug-delivery-systems
#18
F Roig, M Blanzat, C Solans, J Esquena, M J García-Celma
In the present work novel drug delivery systems consisting in highly porous Hyaluronan foams for the administration of a non-steroidal anti-inflammatory drug (NSAID), ketoprofen, have been obtained. A sugar-derived surfactant associated with ketoprofen was prepared and incorporated into the porous hyaluronan materials. The association between a lactose derived surfactant, Lhyd12, and ketoprofen was obtained by acid-base reaction and its physicochemical properties were studied. Tensiometric and dynamic light scattering (DLS) determinations showed the formation of catanionic surfactant aggregates, Lhyd12/ketoprofen, in aqueous solution...
January 30, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29410190/hyaluronan-interactions-with-innate-immunity-in-lung-biology
#19
REVIEW
Robert M Tighe, Stavros Garantziotis
Lung disease is a leading cause of morbidity and mortality worldwide. Innate immune responses in the lung play a central role in the pathogenesis of lung disease and the maintenance of lung health, and thus it is crucial to understand factors that regulate them. Hyaluronan is ubiquitous in the lung, and its expression is increased following lung injury and in disease states. Furthermore, hyaladherins like inter-α-inhibitor, tumor necrosis factor-stimulated gene 6, pentraxin 3 and versican are also induced and help form a dynamic hyaluronan matrix in injured lung...
January 31, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29409810/foxf2-deficiency-permits-basal-like-breast-cancer-cells-to-form-lymphangiogenic-mimicry-by-enhancing-the-response-of-vegf-c-vegfr3-signaling-pathway
#20
Qing-Shan Wang, Rui He, Fan Yang, Li-Juan Kang, Xiao-Qing Li, Li Fu, Baocun Sun, Yu-Mei Feng
Lymphatic metastasis is the main route of breast cancer metastasis. It is known that lymphangiogenesis facilitates lymphatic metastasis through vascular endothelial growth factor-C (VEGF-C)/VEGF receptor 3 (VEGFR3) pathway-linked interactions between the tumor and its microenvironment. Here, we report a novel mechanism of lymphatic metastasis by which aggressive basal-like breast cancer (BLBC) cells form lymphatic vessel-like structures that are identified by the positive expression of lymphatic endothelial cell markers lymphatic vessel endothelial hyaluronan receptor 1 (LYVE-1), podoplanin, and VEGFR3, and termed as lymphangiogenic mimicry (LM), for the first time...
January 30, 2018: Cancer Letters
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