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[PMID]:29499665
[Au] Autor:Zhu Z; Zhang H; Yue J; Liu S; Li Z; Wang L
[Ad] Endereço:People's Hospital of Zhengzhou University and Henan Provincial People's Hospital, Henan Eye Institute, Henan Eye Hospital, Zhengzhou, 450003, China.
[Ti] Título:Antimicrobial efficacy of corneal cross-linking in vitro and in vivo for Fusarium solani: a potential new treatment for fungal keratitis.
[So] Source:BMC Ophthalmol;18(1):65, 2018 Mar 02.
[Is] ISSN:1471-2415
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Fungal keratitis is one of the major causes of visual impairment worldwide. However, the effectiveness of corneal collagen cross-linking (CXL) for fungal keratitis remains controversial. In this study, we developed an in vitro and an in vivo models to assess the efficacy of CXL for Fusarium keratitis. METHODS: The effect of in vitro CXL fungicidal was evaluated on the cultures of Fusarium solani which were exposed to irradiation for different durations. Viability of fungal was appraised under four conditions: no treatment (control); CXL: UVA (365 nm)/riboflavin; riboflavin and UVA (365 nm). Each batch of sterile plate culture was irradiated for different CXL durations. The in vivo Therapeutic effect was studied on a mouse keratitis model. The animals were divided randomly into three groups: group A with no treatment (control); Group B with CXL treatment for two minutes and group C with CXL treatment for three minutes. The CXL procedure was performed 24 h post inoculation in each group. All mice with corneal involvement were scored daily for 7 days and 10 days after infection. Corneals were extracted at various time points for quantitative fungal recovery. Histological evaluations were conducted to calculate the number of polymorphonuclear cells. RESULTS: Viability of fungal decreased significantly in CXL group with 30-min irradiation compared with that in control, riboflavin and UVA groups (P < 0.01). The colony-forming units (CFUs) of fungal solutions in culture significantly decreased with CXL treatment (P < 0.05). Clinical scores, corneal lesion, corneal opacity, neovascularization and the depth of ulceration scores in group B and group C were remarkably lower than that in group A (P < 0.05, P = 0.001, P = 0.001, P = 0.034 and P = 0.025 respectively). Scores of group C were much lower than that in group B. Histological revealed that destruction of corneal collagen fibers and infiltration of inflammatory cells into corneal tissue in group B and group C were much lower than that in group A. CONCLUSIONS: We believe that CXL treatment may be applied to fungal keratitis, therapeutic efficacy will improve with longer treatment duration.
[Mh] Termos MeSH primário: Anti-Infecciosos/uso terapêutico
Substância Própria/metabolismo
Úlcera da Córnea/tratamento farmacológico
Reagentes para Ligações Cruzadas
Infecções Oculares Fúngicas/tratamento farmacológico
Fusariose/tratamento farmacológico
Fusarium/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Colágeno/metabolismo
Contagem de Colônia Microbiana
Úlcera da Córnea/metabolismo
Úlcera da Córnea/microbiologia
Modelos Animais de Doenças
Infecções Oculares Fúngicas/metabolismo
Infecções Oculares Fúngicas/microbiologia
Fusariose/metabolismo
Fusariose/microbiologia
Fusarium/isolamento & purificação
Masculino
Camundongos
Camundongos Endogâmicos C57BL
Fármacos Fotossensibilizantes/uso terapêutico
Riboflavina/uso terapêutico
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Infective Agents); 0 (Cross-Linking Reagents); 0 (Photosensitizing Agents); 9007-34-5 (Collagen); TLM2976OFR (Riboflavin)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180304
[St] Status:MEDLINE
[do] DOI:10.1186/s12886-018-0727-0


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[PMID]:29484750
[Au] Autor:Saraswati S; Alhaider AA; Abdelgadir AM
[Ad] Endereço:Camel Biomedical Research Unit, College of Pharmacy and Medicine, King Saud University, Riyadh, Saudi Arabia.
[Ti] Título:Costunolide suppresses an inflammatory angiogenic response in a subcutaneous murine sponge model.
[So] Source:APMIS;126(3):257-266, 2018 Mar.
[Is] ISSN:1600-0463
[Cp] País de publicação:Denmark
[La] Idioma:eng
[Ab] Resumo:Costunolide is known to possess anti-inflammatory and antitumor activity, but its role in tumor angiogenesis, the key step involved in tumor growth and metastasis, and the involved molecular mechanism is still unknown. We aimed to investigate the effects of costunolide on key components of inflammatory angiogenesis in the murine cannulated sponge implant angiogenesis model. Polyester-polyurethane sponges, used as a framework for fibrovascular tissue growth, were implanted in Swiss albino mice and costunolide (5, 10 and 20 mg/kg/day) was administered for 14 days through installed cannula. The implants collected at day 14 post-implantation were processed for the assessment of hemoglobin (Hb), myeloperoxidase (MPO), N-acetylglucosaminidase (NAG) and collagen, which were used as indices for angiogenesis, neutrophil and macrophage accumulation, and extracellular matrix deposition, respectively. Relevant inflammatory, angiogenic and fibrogenic cytokines were also determined. Costunolide treatment attenuated the main components of the fibrovascular tissue, wet weight, vascularization (Hb content), macrophage recruitment (NAG activity), collagen deposition, and the levels of vascular endothelial growth factor (VEGF), interleukin (IL)-1ß, IL-6, IL-17, tumor necrosis factor (TNF)-α and transforming growth factor (TGF-ß). Regulatory function of costunolide on multiple parameters of the main components of inflammatory angiogenesis has been revealed giving insight into the potential therapeutic benefit underlying the anti-angiogenic actions of costunolide.
[Mh] Termos MeSH primário: Inibidores da Angiogênese/farmacologia
Macrófagos/imunologia
Neovascularização Patológica/imunologia
Neutrófilos/imunologia
Poliésteres/efeitos adversos
Poliuretanos/efeitos adversos
Sesquiterpenos/farmacologia
[Mh] Termos MeSH secundário: Acetilglucosaminidase/metabolismo
Animais
Colágeno/metabolismo
Citocinas/metabolismo
Modelos Animais de Doenças
Hemoglobinas/metabolismo
Masculino
Camundongos
Peroxidase/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Angiogenesis Inhibitors); 0 (Cytokines); 0 (Hemoglobins); 0 (Polyesters); 0 (Polyurethanes); 0 (Sesquiterpenes); 4IK578SA7Z (costunolide); 9007-34-5 (Collagen); EC 1.11.1.7 (Peroxidase); EC 3.2.1.52 (Acetylglucosaminidase)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180228
[St] Status:MEDLINE
[do] DOI:10.1111/apm.12808


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[PMID]:27772645
[Au] Autor:Jeng BH; Farid M; Patel SV; Schwab IR
[Ad] Endereço:Baltimore, Maryland. Electronic address: bjeng@som.umaryland.edu.
[Ti] Título:Corneal Cross-linking for Keratoconus: A Look at the Data, the Food and Drug Administration, and the Future.
[So] Source:Ophthalmology;123(11):2270-2272, 2016 11.
[Is] ISSN:1549-4713
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Reagentes para Ligações Cruzadas
Ceratocone/tratamento farmacológico
Fotoquimioterapia
Fármacos Fotossensibilizantes/uso terapêutico
Riboflavina/uso terapêutico
United States Food and Drug Administration/tendências
[Mh] Termos MeSH secundário: Ensaios Clínicos como Assunto
Colágeno/metabolismo
Substância Própria/metabolismo
Aprovação de Drogas
Previsões
Seres Humanos
Ceratocone/metabolismo
Projetos de Pesquisa
Raios Ultravioleta
Estados Unidos
[Pt] Tipo de publicação:EDITORIAL
[Nm] Nome de substância:
0 (Cross-Linking Reagents); 0 (Photosensitizing Agents); 9007-34-5 (Collagen); TLM2976OFR (Riboflavin)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


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[PMID]:28456003
[Au] Autor:Röhr D; Halfter H; Schulz JB; Young P; Gess B
[Ad] Endereço:Department of Sleep Medicine and Neuromuscular Disorders, University Hospital Muenster, Muenster, Germany.
[Ti] Título:Sodium-dependent Vitamin C transporter 2 deficiency impairs myelination and remyelination after injury: Roles of collagen and demethylation.
[So] Source:Glia;65(7):1186-1200, 2017 Jul.
[Is] ISSN:1098-1136
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Peripheral nerve myelination involves rapid production of tightly bound lipid layers requiring cholesterol biosynthesis and myelin protein expression, but also a collagen-containing extracellular matrix providing mechanical stability. In previous studies, we showed a function of ascorbic acid in peripheral nerve myelination and extracellular matrix formation in adult mice. Here, we sought the mechanism of action of ascorbic acid in peripheral nerve myelination using different paradigms of myelination in vivo and in vitro. We found impaired myelination and reduced collagen expression in Sodium-dependent Vitamin C Transporter 2 heterozygous mice (SVCT2 ) during peripheral nerve development and after peripheral nerve injury. In dorsal root ganglion (DRG) explant cultures, hypo-myelination could be rescued by precoating with different collagen types. The activity of the ascorbic acid-dependent demethylating Ten-eleven-translocation (Tet) enzymes was reduced in ascorbic acid deprived and SVCT2 DRG cultures. Further, in ascorbic acid-deprived DRG cultures, methylation of a CpG island in the collagen alpha1 (IV) and alpha2 (IV) bidirectional promoter region was increased compared to wild-type and ascorbic acid treated controls. Taken together, these results provide further evidence for the function of ascorbic acid in myelination and extracellular matrix formation in peripheral nerves and suggest a putative molecular mechanism of ascorbic acid function in Tet-dependent demethylation of collagen promoters.
[Mh] Termos MeSH primário: Colágeno/metabolismo
Desmetilação
Traumatismos dos Nervos Periféricos/genética
Traumatismos dos Nervos Periféricos/fisiopatologia
Remielinização/genética
Transportadores de Sódio Acoplados à Vitamina C/deficiência
[Mh] Termos MeSH secundário: Animais
Ácido Ascórbico/farmacologia
Células Cultivadas
Colágeno/genética
Modelos Animais de Doenças
Feminino
Transtornos Neurológicos da Marcha/etiologia
Gânglios Espinais/citologia
Masculino
Camundongos
Camundongos Transgênicos
Nervos Periféricos/patologia
Nervos Periféricos/ultraestrutura
RNA Mensageiro/metabolismo
Teste de Desempenho do Rota-Rod
Células Receptoras Sensoriais/metabolismo
Células Receptoras Sensoriais/patologia
Transportadores de Sódio Acoplados à Vitamina C/genética
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Messenger); 0 (Slc23a2 protein, mouse); 0 (Sodium-Coupled Vitamin C Transporters); 9007-34-5 (Collagen); PQ6CK8PD0R (Ascorbic Acid)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170430
[St] Status:MEDLINE
[do] DOI:10.1002/glia.23152


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[PMID]:27771811
[Au] Autor:Kamenskiy A; Seas A; Deegan P; Poulson W; Anttila E; Sim S; Desyatova A; MacTaggart J
[Ad] Endereço:Department of Surgery, 987690 Nebraska Medical Center, University of Nebraska Medical Center, Omaha, NE, 68198-7690, USA. Alexey.Kamenskiy@unmc.edu.
[Ti] Título:Constitutive description of human femoropopliteal artery aging.
[So] Source:Biomech Model Mechanobiol;16(2):681-692, 2017 04.
[Is] ISSN:1617-7940
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Femoropopliteal artery (FPA) mechanics play a paramount role in pathophysiology and the artery's response to therapeutic interventions, but data on FPA mechanical properties are scarce. Our goal was to characterize human FPAs over a wide population to derive a constitutive description of FPA aging to be used for computational modeling. Fresh human FPA specimens ([Formula: see text]) were obtained from [Formula: see text] predominantly male (80 %) donors 54±15 years old (range 13-82 years). Morphometric characteristics including radius, wall thickness, opening angle, and longitudinal pre-stretch were recorded. Arteries were subjected to multi-ratio planar biaxial extension to determine constitutive parameters for an invariant-based model accounting for the passive contributions of ground substance, elastin, collagen, and smooth muscle. Nonparametric bootstrapping was used to determine unique sets of material parameters that were used to derive age-group-specific characteristics. Physiologic stress-stretch state was calculated to capture changes with aging. Morphometric and constitutive parameters were derived for seven age groups. Vessel radius, wall thickness, and circumferential opening angle increased with aging, while longitudinal pre-stretch decreased ([Formula: see text]). Age-group-specific constitutive parameters portrayed orthotropic FPA stiffening, especially in the longitudinal direction. Structural changes in artery wall elastin were associated with reduction of physiologic longitudinal and circumferential stretches and stresses with age. These data and the constitutive description of FPA aging shed new light on our understanding of peripheral arterial disease pathophysiology and arterial aging. Application of this knowledge might improve patient selection for specific treatment modalities in personalized, precision medicine algorithms and could assist in device development for treatment of peripheral artery disease.
[Mh] Termos MeSH primário: Envelhecimento
Artérias/fisiologia
Modelos Biológicos
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Fenômenos Biomecânicos
Colágeno/metabolismo
Elastina/metabolismo
Feminino
Seres Humanos
Masculino
Meia-Idade
Doença Arterial Periférica/fisiopatologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
9007-34-5 (Collagen); 9007-58-3 (Elastin)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM; S
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE
[do] DOI:10.1007/s10237-016-0845-7


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[PMID]:29486746
[Au] Autor:Rosentreter A; Lappas A; Widder RA; Alnawaiseh M; Dietlein TS
[Ad] Endereço:Department of Ophthalmology, University of Würzburg, Josef-Schneider-Str. 11, 97080, Würzburg, Germany. andre.rosentreter@googlemail.com.
[Ti] Título:Conjunctival repair after glaucoma drainage device exposure using collagen-glycosaminoglycane matrices.
[So] Source:BMC Ophthalmol;18(1):60, 2018 Feb 27.
[Is] ISSN:1471-2415
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: To report the results of the repair of conjunctival erosions resulting from glaucoma drainage device surgery using collagen-glycosaminoglycane matrices (CGM). METHODS: Case series of 8 patients who underwent revision surgery due to conjunctival defects with exposed tubes through necrosis of the overlying scleral flap and conjunctiva after Baerveldt drainage device surgery. The defects were repaired by lateral displacement of the tube towards the sclera, with a slice of a CGM as a patch, covered by adjacent conjunctiva. RESULT: Successful, lasting closure (follow-up of 12 to 42 months) of the conjunctival defects was achieved without any side-effects or complications in all eight cases. CONCLUSIONS: Erosion of the drainage tube, creating buttonholes in the conjunctiva after implantation of glaucoma drainage devices, is a potentially serious problem. It can be managed successfully using a biodegradable CGM as a patch.
[Mh] Termos MeSH primário: Colágeno/uso terapêutico
Túnica Conjuntiva/lesões
Túnica Conjuntiva/cirurgia
Implantes para Drenagem de Glaucoma/efeitos adversos
Glaucoma/cirurgia
Glicosaminoglicanos/uso terapêutico
Procedimentos Cirúrgicos Oftalmológicos
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Criança
Feminino
Seres Humanos
Pressão Intraocular
Masculino
Meia-Idade
Complicações Pós-Operatórias/cirurgia
Reoperação
Estudos Retrospectivos
Esclera/cirurgia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Glycosaminoglycans); 9007-34-5 (Collagen)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180301
[St] Status:MEDLINE
[do] DOI:10.1186/s12886-018-0721-6


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[PMID]:27779203
[Au] Autor:Villalobos-Hernandez A; Bobbala D; Kandhi R; Khan MG; Mayhue M; Dubois CM; Ferbeyre G; Saucier C; Ramanathan S; Ilangumaran S
[Ad] Endereço:Immunology Division, Department of Pediatrics, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Quebec, Canada.
[Ti] Título:SOCS1 inhibits migration and invasion of prostate cancer cells, attenuates tumor growth and modulates the tumor stroma.
[So] Source:Prostate Cancer Prostatic Dis;20(1):36-47, 2017 Mar.
[Is] ISSN:1476-5608
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The suppressor of cytokine signaling 1 (SOCS1) gene is repressed in prostate cancer (PCa) by epigenetic silencing and microRNA miR30d. Increased expression of the SOCS1-targeting miR30d correlates with higher biochemical recurrence, suggesting a tumor suppressor role of SOCS1 in PCa, but the underlying mechanisms are unclear. We have shown that SOCS1 inhibits MET receptor kinase signaling, a key oncogenic pathway in cancer progression. Here we evaluated the role of SOCS1 in attenuating MET signaling in PCa cells and tumor growth in vivo. METHODS: MET-overexpressing human DU145 and PC3 PCa cell lines were stably transduced with SOCS1, and their growth, migration and invasion of collagen matrix were evaluated in vitro. Cells expressing SOCS1 or the control vector were evaluated for tumor growth in NOD.scid.gamma mice as xenograft or orthotopic tumors. RESULTS: HGF-induced MET signaling was attenuated in SOCS1-expressing DU145 and PC3 cells. Compared with vector control cells, SOCS1-expressing cells showed reduced proliferation and impaired migration following HGF stimulation. DU145 and PC3 cells showed marked ability to invade the collagen matrix following HGF stimulation and this was attenuated by SOCS1. As xenografts, SOCS1-expressing PCa cells showed significantly reduced tumor growth compared with vector control cells. In the orthotopic tumor model, SOCS1 reduced the growth of primary tumors and metastatic spread. Intriguingly, the SOCS1-expressing DU145 and PC3 tumors showed increased collagen deposition, associated with increased frequency of myofibroblasts. CONCLUSIONS: Our findings support the tumor suppressor role of SOCS1 in PCa and suggest that attenuation of MET signaling is one of the underlying mechanisms. SOCS1 in PCa cells also appears to prevent the tumor-promoting functions of cancer-associated fibroblasts.
[Mh] Termos MeSH primário: Neoplasias da Próstata/metabolismo
Neoplasias da Próstata/patologia
Células Estromais/metabolismo
Proteína 1 Supressora da Sinalização de Citocina/metabolismo
[Mh] Termos MeSH secundário: Animais
Linhagem Celular Tumoral
Movimento Celular
Proliferação Celular
Transformação Celular Neoplásica/genética
Transformação Celular Neoplásica/metabolismo
Colágeno/metabolismo
Metilação de DNA
Modelos Animais de Doenças
Epigênese Genética
Expressão Gênica
Fator de Crescimento de Hepatócito/metabolismo
Xenoenxertos
Seres Humanos
Masculino
Camundongos
Invasividade Neoplásica
Metástase Neoplásica
Neoplasias da Próstata/genética
Proteínas Proto-Oncogênicas c-met/metabolismo
Transdução de Sinais
Células Estromais/patologia
Proteína 1 Supressora da Sinalização de Citocina/genética
Carga Tumoral
Microambiente Tumoral
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (HGF protein, human); 0 (SOCS1 protein, human); 0 (Suppressor of Cytokine Signaling 1 Protein); 67256-21-7 (Hepatocyte Growth Factor); 9007-34-5 (Collagen); EC 2.7.10.1 (Proto-Oncogene Proteins c-met)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.1038/pcan.2016.50


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[PMID]:28463693
[Au] Autor:Jeon EY; Choi BH; Jung D; Hwang BH; Cha HJ
[Ad] Endereço:Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea.
[Ti] Título:Natural healing-inspired collagen-targeting surgical protein glue for accelerated scarless skin regeneration.
[So] Source:Biomaterials;134:154-165, 2017 Jul.
[Is] ISSN:1878-5905
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Skin scarring after deep dermal injuries is a major clinical problem due to the current therapies limited to established scars with poor understanding of healing mechanisms. From investigation of aberrations within the extracellular matrix involved in pathophysiologic scarring, it was revealed that one of the main factors responsible for impaired healing is abnormal collagen reorganization. Here, inspired by the fundamental roles of decorin, a collagen-targeting proteoglycan, in collagen remodeling, we created a scar-preventive collagen-targeting glue consisting of a newly designed collagen-binding mussel adhesive protein and a specific glycosaminoglycan. The collagen-targeting glue specifically bound to type I collagen in a dose-dependent manner and regulated the rate and the degree of fibrillogenesis. In a rat skin excisional model, the collagen-targeting glue successfully accelerated initial wound regeneration as defined by effective reepithelialization, neovascularization, and rapid collagen synthesis. Moreover, the improved dermal collagen architecture was demonstrated by uniform size of collagen fibrils, their regular packing, and a restoration of healthy tissue component. Collectively, our natural healing-inspired collagen-targeting glue may be a promising therapeutic option for improving the healing rate with high-quality and effective scar inhibition.
[Mh] Termos MeSH primário: Colágeno/química
Hidrogel de Polietilenoglicol-Dimetacrilato/química
Adesivos Teciduais/química
Adesivos Teciduais/uso terapêutico
Cicatrização/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Colágeno Tipo I/química
Colágeno Tipo I/uso terapêutico
Decorina/química
Decorina/uso terapêutico
Eletroforese em Gel de Poliacrilamida
Feminino
Glicosaminoglicanos
Seres Humanos
Camundongos
Microscopia Eletrônica de Transmissão
Células NIH 3T3
Proteínas/química
Proteínas/uso terapêutico
Proteoglicanas/química
Proteoglicanas/uso terapêutico
Ratos
Ratos Sprague-Dawley
Pele/efeitos dos fármacos
Pele/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Collagen Type I); 0 (Decorin); 0 (Glycosaminoglycans); 0 (Proteins); 0 (Proteoglycans); 0 (Tissue Adhesives); 0 (adhesive protein, mussel); 25852-47-5 (Hydrogel, Polyethylene Glycol Dimethacrylate); 9007-34-5 (Collagen)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE


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[PMID]:29381285
[Au] Autor:Wu T; Zhang J; Wang Y; Sun B; Guo X; Morsi Y; El-Hamshary H; El-Newehy M; Mo X
[Ti] Título:Development of Dynamic Liquid and Conjugated Electrospun Poly(L-lactide-co-caprolactone)/Collagen Nanoyarns for Regulating Vascular Smooth Muscle Cells Growth.
[So] Source:J Biomed Nanotechnol;13(3):303-12, 2017 Mar.
[Is] ISSN:1550-7033
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Simulating the modeling of smooth muscle layer in the vascular structure makes a great difference for vascular tissue regeneration. A functional tissue engineered vascular media shall promote the aligned organization and three-dimensional penetration of smooth muscle cells (SMCs) into the scaffold. To this aim, dynamic liquid and conjugated nanoyarns based on poly(L-lactide-co-caprolactone) (P(LLA-CL)) and collagen (COL) with a weight ratio at 3:1 were fabricated by electrospinning methods, with random and aligned nanofibers as control groups. The Fourier transform infrared spectroscopy and X-ray diffraction analyses confirmed the preservation of P(LLA-CL)/COL components and structure. Scanning electron microscope (SEM) results indicated a significant increase of yarn diameters at 19.27 ± 6.16 µm (dynamic liquid) and 10.24 ± 3.09 µm (conjugated), and both of the nanoyarns had improved mechanical tensile properties than the random nanofibers. Compared with random and aligned nanofibers, the nanoyarns presented significant higher porosity and larger pore diameter, leading to a decrease of water contact angle and a promotion of SMCs proliferation and migration. Better SMCs orientation was observed on the conjugated nanoyarns, while superior SMCs penetration was achieved on the dynamic liquid nanoyarns, owing to the differences in yarns microstructure. Herein, this study demonstrated that the aligned and porous P(LLA-CL)/COL nanoyarns fabricated by dynamic liquid and conjugated electrospinning were beneficial to regulating vascular SMCs outgrowth, which had important implications for functional reconstruction of vascular media.
[Mh] Termos MeSH primário: Materiais Biocompatíveis/síntese química
Colágeno/química
Músculo Liso Vascular/citologia
Miócitos de Músculo Liso/citologia
Nanoconjugados/química
Poliésteres/química
Tecidos Suporte
[Mh] Termos MeSH secundário: Proliferação Celular/fisiologia
Células Cultivadas
Galvanoplastia/métodos
Desenho de Equipamento
Análise de Falha de Equipamento
Seres Humanos
Músculo Liso Vascular/fisiologia
Miócitos de Músculo Liso/fisiologia
Nanoconjugados/ultraestrutura
Rotação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Biocompatible Materials); 0 (Nanoconjugates); 0 (Polyesters); 0 (poly(lactic acid-co-epsilon-caprolactone)); 9007-34-5 (Collagen)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180131
[St] Status:MEDLINE


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[PMID]:29227513
[Au] Autor:Vinciguerra R; Romano V; Arbabi EM; Brunner M; Willoughby CE; Batterbury M; Kaye SB
[Ti] Título:In Vivo Early Corneal Biomechanical Changes After Corneal Cross-linking in Patients With Progressive Keratoconus.
[So] Source:J Refract Surg;33(12):840-846, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To report early corneal biomechanical changes after corneal cross-linking (CXL) in patients with keratoconus. METHODS: Thirty-four eyes of 34 patients undergoing CXL for progressive keratoconus were included in this prospective clinical study. Dynamic corneal response (DCR) parameters obtained with the Corvis ST (OCULUS Optikgeräte GmbH; Wetzlar, Germany) were assessed at baseline (day of CXL) and after 1 month of follow-up; conversely, corneal tomography with the Pentacam (OCULUS Optikgeräte GmbH) was assessed at baseline and at 1, 3, and 6 months after CXL. RESULTS: At the last follow-up visit (123.7 ± 69.6 days), all morphological parameters including steepest point (Kmax) and thinnest corneal thickness (ThCT) indicated stabilization of keratoconus (P > .05). Comparative analyses showed a rise of corneal stiffness demonstrated by a significant increase of Stiffness Parameter A1 (SP-A1) and Highest Concavity (SP-HC) and a significant decrease of Inverse Concave Radius (1/R) and Deformation Amplitude Ratio (DA Ratio) (P < .05). There was a significant correlation between the preoperative keratoconus characteristics (Kmax, Belin/Ambrósio final D value [BAD-D], and ThCT) and the DCR parameters (P < .05). Kmax and BAD-D showed a significant positive correlation with DA Ratio, Deflection Amplitude (DefA), and 1/R and a significant negative correlation with SPA1 and SP-HC. ThCT showed a significant positive correlation with SP-A1 and SP-HC and a significant negative correlation with DA Ratio, DefA, and 1/R. CONCLUSIONS: This study suggests that the new DCR parameters of the Corvis ST are able to detect early changes in biomechanics following CXL and those that are measurable before corneal shape modifications take place. Based on these results, the authors suggest the use of these metrics to assess the early efficacy of cross-linking. [J Refract Surg. 2017;33(12):840-846.].
[Mh] Termos MeSH primário: Córnea/fisiologia
Reagentes para Ligações Cruzadas
Elasticidade/fisiologia
Ceratocone/tratamento farmacológico
Fotoquimioterapia
Fármacos Fotossensibilizantes/uso terapêutico
Riboflavina/uso terapêutico
[Mh] Termos MeSH secundário: Adulto
Fenômenos Biomecânicos
Colágeno/metabolismo
Substância Própria/metabolismo
Topografia da Córnea
Feminino
Seres Humanos
Ceratocone/metabolismo
Ceratocone/fisiopatologia
Masculino
Estudos Prospectivos
Raios Ultravioleta
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cross-Linking Reagents); 0 (Photosensitizing Agents); 9007-34-5 (Collagen); TLM2976OFR (Riboflavin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20170922-02



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