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#28183649   2017/02/10 Save this To Up

Biological and mechanical evaluation of a Bio-Hybrid scaffold for autologous valve tissue engineering.

Major challenge in heart valve tissue engineering for paediatric patients is the development of an autologous valve with regenerative capacity. Hybrid tissue engineering approach is recently gaining popularity to design scaffolds with desired biological and mechanical properties that can remodel post implantation. In this study, we fabricated aligned nanofibrous Bio-Hybrid scaffold made of decellularized bovine pericardium: polycaprolactone-chitosan with optimized polymer thickness to yield the desired biological and mechanical properties. CD44(+), αSMA(+), Vimentin(+) and CD105(-) human valve interstitial cells were isolated and seeded on these Bio-Hybrid scaffolds. Subsequent biological evaluation revealed interstitial cell proliferation with dense extra cellular matrix deposition that indicated the viability for growth and proliferation of seeded cells on the scaffolds. Uniaxial mechanical tests along axial direction showed that the Bio-Hybrid scaffolds has at least 20 times the strength of the native valves and its stiffness is nearly 3 times more than that of native valves. Biaxial and uniaxial mechanical studies on valve interstitial cells cultured Bio-Hybrid scaffolds revealed that the response along the axial and circumferential direction was different, similar to native valves. Overall, our findings suggest that Bio-Hybrid scaffold is a promising material for future development of regenerative heart valve constructs in children.

1264 related Products with: Biological and mechanical evaluation of a Bio-Hybrid scaffold for autologous valve tissue engineering.

Breast invasive ductal ca Mouse Anti-Ca19.9 Sialyl Multiple lung carcinoma ( Adeno Lenti EGFP (hybrid) Anti C Reactive Protein A MOUSE ANTI BOVINE ROTAVIR Bone Morphogenetic Protei Growth Differentiation Fa Amplite™ Fluorimetric F Androgen Receptor (Phosph Androgen Receptor (Phosph Rabbit Anti-Human Androge

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#25602488   2015/04/10 Save this To Up

Engineering vascularized adipose tissue using the stromal-vascular fraction and fibrin hydrogels.

The development of vascularized and functional adipose tissue substitutes is required to improve soft tissue augmentation. In this study, vascularized adipose tissue constructs were generated using uncultured cells from the stromal-vascular fraction (SVF) of adipose tissue as an alternative cell source to adipose-derived stem cells. SVF cell behavior and tissue formation were compared in a stable fibrin formulation developed by our group and a commercial fibrin sealant (TissuCol; Baxter) upon direct subcutaneous implantation in a nude mouse model. Further, the effect of in vitro adipogenic induction on SVF cell development was investigated by implanting stable fibrin constructs after 1 week of precultivation (adipogenic vs. noninduced control). Constructs were thoroughly analyzed before implantation regarding adipogenic differentiation status, cell viability, and distribution as well as the presence of endothelial cells. Before implantation, in vitro precultivation strongly promoted adipogenesis (under adipogenic conditions) and the formation of CD31(+) prevascular structures by SVF cells (under nonadipogenic conditions). Tissue development in vivo was determined after 4 weeks by histology (hematoxylin and eosin, human vimentin) and quantified histomorphometrically. In stable fibrin gels, adipogenic precultivation was superior to noninduced conditions, resulting in mature adipocytes and the formation of distinct vascular structures of human origin in vivo. Strong neovascularization by the implanted cells predominated in noninduced constructs. Without pretreatment, the SVF in stable fibrin gels displayed only a weak differentiation capability. In contrast, TissuCol gels strongly supported the formation of coherent and well-vascularized adipose tissue of human origin, displaying large unilocular adipocytes. The developed native-like tissue architecture was highlighted by a whole mount staining technique. Taken together, SVF cells from human adipose tissue were shown to successfully lead to adipose tissue formation in fibrin hydrogels in vivo. The results render the SVF a promising cell source for subsequent studies both in vitro and in vivo with the aim of engineering clinically applicable soft tissue substitutes.

2387 related Products with: Engineering vascularized adipose tissue using the stromal-vascular fraction and fibrin hydrogels.

FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu Normal mouse multiple org Normal rat multiple organ Normal rat multiple organ Normal rat multiple organ Gastrointestinal stromal

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#23301612   2013/07/23 Save this To Up

Assembly of a three-dimensional multitype bronchiole coculture model using magnetic levitation.

A longstanding goal in biomedical research has been to create organotypic cocultures that faithfully represent native tissue environments. There is presently great interest in representative culture models of the lung, which is a particularly challenging tissue to recreate in vitro. This study used magnetic levitation in conjunction with magnetic nanoparticles as a means of creating an organized three-dimensional (3D) coculture of the bronchiole that sequentially layers cells in a manner similar to native tissue architecture. The 3D coculture model was assembled from four human cell types in the bronchiole: endothelial cells, smooth muscle cells (SMCs), fibroblasts, and epithelial cells (EpiCs). This study represents the first effort to combine these particular cell types into an organized bronchiole coculture. These cell layers were first cultured in 3D by magnetic levitation, and then manipulated into contact with a custom-made magnetic pen, and again cultured for 48 h. Hematoxylin and eosin staining of the resulting coculture showed four distinct layers within the 3D coculture. Immunohistochemistry confirmed the phenotype of each of the four cell types and showed organized extracellular matrix formation, particularly, with collagen type I. Positive stains for CD31, von Willebrand factor, smooth muscle α-actin, vimentin, and fibronectin demonstrate the maintenance of the phenotype for endothelial cells, SMCs, and fibroblasts. Positive stains for mucin-5AC, cytokeratin, and E-cadherin after 7 days with and without 1% fetal bovine serum showed that EpiCs maintained the phenotype and function. This study validates magnetic levitation as a method for the rapid creation of organized 3D cocultures that maintain the phenotype and induce extracellular matrix formation.

1951 related Products with: Assembly of a three-dimensional multitype bronchiole coculture model using magnetic levitation.

Advanced Airway Intubatio NanoLink™ Amino Magneti MagnaLink™ Amino Magnet Anti-DAM1(Kinetochore ass Anti DAM1(Kinetochore ass Monoclonal Anti-Assembly Monoclonal Anti Assembly B-Phycoerythrin antibody 2-Amino Benzimidazole Su 2-Amino Benzimidazole Su EZH2 KMT6 Control Peptid EZH2 KMT6 antibody Isoty

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#25049514   2014/07/22 Save this To Up

Protein Profile in Corpus Luteum during Pregnancy in Korean Native Cows.

Steroidogenesis requires coordination of the anabolic and catabolic pathways of lipid metabolism, but the profile of proteins associated with progesterone synthesis in cyclic and pregnant corpus luteum (CL) is not well-known in cattle. In Experiment 1, plasma progesterone level was monitored in cyclic cows (n = 5) and pregnant cows (n = 6; until d-90). A significant decline in the plasma progesterone level occurred at d-19 of cyclic cows. Progesterone level in abbatoir-derived luteal tissues was also determined at d 1 to 5, 6 to 13 and 14 to 20 of cyclic cows, and d-60 and -90 of pregnant cows (n = 5 each). Progesterone level in d-60 CL was not different from those in d 6 to 13 CL and d-90 CL, although the difference between d 6 to 13 and d-90 was significant. In Experiment 2, protein expression pattern in CL at d-90 (n = 4) was compared with that in CL of cyclic cows at d 6 to 13 (n = 5). Significant changes in the level of protein expression were detected in 32 protein spots by two-dimensional polyacrylamide gel electrophoresis (2-DE), and 23 of them were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). Six proteins were found only in pregnant CL, while the other 17 proteins were found only in cyclic CL. Among the above 6 proteins, vimentin which is involved in the regulation of post-implantation development was included. Thus, the protein expression pattern in CL was disorientated from cyclic luteal phase to mid pregnancy, and alterations in specific CL protein expression may contribute to the maintenance of pregnancy in Korean native cows.

2181 related Products with: Protein Profile in Corpus Luteum during Pregnancy in Korean Native Cows.

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#21306279   2011/06/24 Save this To Up

Arachnoid cells on culture plates and collagen scaffolds: phenotype and transport properties.

The arachnoid tissue is a critical component of cerebrospinal fluid removal. Failure of that function results in hydrocephalus, a serious medical condition. The purpose of this study was to characterize arachnoid cell transport in culture and on three-dimensional collagen scaffold.

2480 related Products with: Arachnoid cells on culture plates and collagen scaffolds: phenotype and transport properties.

Androgen Receptor (Phosph Androgen Receptor (Phosph Rabbit Anti-Human Androge Rabbit Anti-Human Androge Androgen Receptor (Ab 650 AZD-3514 Mechanisms: Andr 17β-Acetoxy-2α-bromo-5 (5α,16β)-N-Acetyl-16-[2 (5α,16β)-N-Acetyl-16-ac 5α-N-Acetyl-2'H-androst- 5α-N-Acetyl-2'H-androst- 3-O-Acetyl 5,14-Androstad

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#18992129   2009/07/27 Save this To Up

Abnormal expression of TIMP-2, SOD, vimentin and PAI proteins in cloned bovine placentae.

Cloned mammals suffer from high rates of placental abnormality and foetal loss during pregnancy. We previously used 2-D gel electrophoresis and mass spectrometry for global proteomic analysis of cloned and normal bovine placentae to identify differential protein expression patterns. Here, we used Western blot analysis to confirm the expression levels of several pregnancy-related proteins putatively identified as being differentially expressed in somatic cell nuclear transfer (SCNT) vs normal bovine placentae. The expression levels of tissue inhibitor of metalloproteinase-2 (TIMP-2), its downstream protein, matrix metalloproteinase-2 (MMP-2), superoxide dismutase (SOD), vimentin and plasminogen activator inhibitor-1 (PAI) were analysed in the placentae of SCNT cloned Korean native cattle that died immediately after birth and in normal placentae obtained by AI. Our results revealed that TIMP-2 and SOD were up-regulated in SCNT placenta compared with normal placenta, whereas MMP-2 levels were comparable in cloned and normal placentae, and vimentin and PAI were significantly down-regulated in SCNT compared with normal placentae. Our results suggest that key proteins of placental development are abnormally expressed in SCNT cloned bovine placentae, probably resulting in abnormal placental function and clonal mortality.

2630 related Products with: Abnormal expression of TIMP-2, SOD, vimentin and PAI proteins in cloned bovine placentae.

Native Bovine Vimentin Pr DNA (cytosine 5) methyltr Insulin from Bovine Pancr Native Bovine ALPI CIAP P Native Bovine ALPI CIAP P Native Bovine ALPI CIAP P Recombinant Bovine Aproti Recombinant Bovine Aproti Recombinant Bovine Aproti Native Influenza HA (A Br Native Influenza HA (A Br Native Influenza HA (A Br

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#12009069   2002/05/14 Save this To Up

Mixed apocrine sweat gland tumor of the tail in a cow.

A 4-year-old native-breed cow had a mass with wide areas of ulceration and hemorrhage at the base of the tail at the same level as the vulva. The tumor was 19 X 13 X 11 cm, appeared red-brown, and was firm to hard, with gritty areas apparent on cut surface. Histologically, the tumor mass was composed of multilayered epithelial cells forming glandular structures with occasional apical blebs and rare solidly packed cells in nests. The stroma included fibrous connective tissue, scattered or periglandular sheets of spindle-shaped cells resembling myoepithelium, several cartilaginous formations, and numerous irregular islands of mineralized osteoid, well-formed bone trabeculae lined by osteoblasts, and many osteoclast-like multinucleated giant cells among or near the neoplastic epithelium. Immunohistochemically, the neoplastic epithelium was positive for pan-cytokeratin (AE1/AE2) and cytokeratin 19 but was negative for cytokeratin 18. Spindle-shaped cells were stained with alpha smooth muscle actin (alphaSMA) and to a lesser extent vimentin antibodies. The cells of osteogenic lineage and spindle cells closely associated with the osteoid showed strong immunostaining for vimentin but not for alphaSMA. Immunostaining for neuron-specific enolase and S100 protein was not observed in any component of the tumor mass. These findings suggested that the origin of bone formation was undifferentiated mesenchymal cells with osteogenic potential.

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Multiple organ tumor tiss Multiple organs tumor and Multiple organ tumor and Bone marrow tumor and adj Breast tumor survey tissu Breast tumor survey tissu Breast tumor survey tissu Breast tumor survey tissu Breast tumor survey tissu Breast tumor survey tissu Breast tumor survey tissu Breast tumor survey tissu

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#10102292   1999/04/02 Save this To Up

AlphaB-crystallin selectively targets intermediate filament proteins during thermal stress.

AlphaB-Crystallin is a small heat shock protein (sHsp) expressed at high levels in the lens of the eye, where its molecular chaperone functions may protect against cataract formation in vivo. The purpose of this study was to identify protein targets for the sHsp alphaB-crystallin in lens cell homogenates during conditions of mild thermal stress.

2783 related Products with: AlphaB-crystallin selectively targets intermediate filament proteins during thermal stress.

OXI TEK (Oxidative Stress Mouse Anti-RSV 33kDa & 19 Aurora Kinase B Inhibitor Aurora Kinase B Inhibitor PD184352; Appearance Crys PD184352; Appearance Crys PD184352; Appearance Crys MS-275 (Entinostat, SNDX- Vicriviroc Malate; Appear Vicriviroc Malate; Appear Panobinostat (LBH589); Ap Panobinostat (LBH589); Ap

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#9561833   1998/06/09 Save this To Up

Intermediate filament cytoskeletal proteins associated with bovine lens native membrane fractions.

To examine the intermediate filament cytoskeletal proteins associated with native membrane fractions isolated from bovine lenses.

2621 related Products with: Intermediate filament cytoskeletal proteins associated with bovine lens native membrane fractions.

Native Bovine ALPI CIAP P Native Bovine ALPI CIAP P Native Bovine ALPI CIAP P Native Bovine BSA Protein Native Bovine BSA Protein Native Bovine BSA Protein Native Bovine CAPN2 Prote Native Bovine CAPN2 Prote Native Bovine CAPN2 Prote Native Bovine ECGS Protei Native Bovine ECGS Protei Native Bovine ECGS Protei

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#6174150   1982/05/27 Save this To Up

O-phosphoserine content of intermediate filament subunits.

Purified subunits of intermediate filaments obtained from a variety of tissues and cell types contain O-phosphoserine and, in some cases, smaller amounts of O-phosphothreonine. The O-phosphoserine content was estimated by reaction of performic acid oxidized subunits with methylamine in NaOH. Decamin of BHK-21 and CHO fibroblasts contained about 1 mol/mol. Avian and mammalian desmin consists of two subunits, an acidic (alpha) subunit which contained 2 mol/mol and a more basic (beta) nonphosphorylated subunit. The principal (Mr approximately 60 000) subunit of squid brain neurofilaments contained 5 mol/mol. Most mouse and bovine keratin subunits contained 3--6 mol/mol, although certain bovine subunits of higher molecular weight contained none. The O-phosphoserine contents of keratin subunits purified from the viable and stratum corneum layers were the same. The O-phosphoserine was located in non-alpha-helical regions of the subunits which presumably project out from the alpha-helical wall of the intermediate filaments. Most subunits could be partially dephosphorylated in vitro with alkaline phosphatase. It was found that the capacity of such partially dephosphorylated subunits for assembly into native-type filaments in vitro was independent of their phosphate content.

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Lipoproteins, Human Plasm Mouse Anti-Human Actin, f Mouse Anti-Human Actin, f Rabbit Anti-Phosphoserine Rabbit Anti-Phosphoserine Rabbit Anti-Phosphoserine Ofloxacin CAS Number [824 Mouse Anti-M13 fd F1 Fila Anti-phosphoserine (Anti- Anti phosphoserine (Anti Anti-axonal filaments Mon Anti axonal filaments Mon

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