Vascular Remodeling in Health and Disease

The term vascular remodeling is commonly used to define the structural changes in blood vessel geometry that occur in response to long-term physiologic alterations in blood flow or in response to vessel wall injury brought about by trauma or underlying cardiovascular diseases.1, 2, 3, 4 The process of remodeling, which begins as an adaptive response to long-term hemodynamic alterations such as elevated shear stress or increased intravascular pressure, may eventually become maladaptive, leading to impaired vascular function. The vascular endothelium, owing to its location lining the lumen of blood vessels, plays a pivotal role in regulation of all aspects of vascular function and homeostasis.5 Thus, not surprisingly, endothelial dysfunction has been recognized as the harbinger of all major cardiovascular diseases such as hypertension, atherosclerosis, and diabetes.6, 7, 8 The endothelium elaborates a variety of substances that influence vascular tone and protect the vessel wall against inflammatory cell adhesion, thrombus formation, and vascular cell proliferation.8, 9, 10 Among the primary biologic mediators emanating from the endothelium is nitric oxide (NO) and the arachidonic acid metabolite prostacyclin [prostaglandin I2 (PGI2)], which exert powerful vasodilatory, antiadhesive, and antiproliferative effects in the vessel wall

Effect and Analysis of Sustainable Cell Rate using MPEG video Traffic in ATM Networks

The broadband networks inhibit the capability to carry multiple types of traffic – voice, video and data, but these services need to be controlled according to the traffic contract negotiated at the time of the connection to maintain desired Quality of service. Such control techniques use traffic descriptors to evaluate its performance and effectiveness. In case of Variable Bit Rate (VBR) services, Peak Cell Rate (PCR) and its Cell Delay Variation Tolerance (CDVTPCR) are mandatory descriptors. In addition to these, ATM Forum proposed Sustainable Cell Rate (SCR) and its Cell delay variation tolerance (CDVTSCR). In this paper, we evaluated the impact of specific SCR and CDVTSCR values on the Usage Parameter Control (UPC) performance in case of measured MPEG traffic for improving the efficienc

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Not AvailableStudies were conducted to investigate the effect of five growing mediums and four levels of inorganic phosphorus on the growth and development of Dendrocalamus hamiltonii planting stock under mid-hill conditions of north-western Himalayas. The growing medium and phosphorus levels significantly influenced various growth and development traits individually as well as in combinations. The growing medium viz., sand + soil + FYM (1:1:1) proved to be significantly superior for enhancing height and diameter growth of the tiller's, number of tiller per sapling, number of nodes per tiller, number of roots, length of roots, number of rhizomes, dry weight of stem, roots, rhizomes and underground biomass. Among the various levels of phosphorus, 5 g SSP/propagule significantly proved to be the best -1 dose. In combination effect, the maximum dry weight of rhizome (2.82 g plant ) and underground biomass (9.69 g -1 plant ) was recorded in the propagules grown in sand: soil: FYM (1:1:1 ) and supplied with P @ 5 g SSP/propagule.Not Availabl

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Paper presented in Book of Abstracts, National Symposium on Grassland and Fodder Research in the New Millenium, organized by RMSI, IGFRI, Jhansi during October 30- November 1, 2002.Not AvailableNot Availabl