Retinal Inflammaging: Pathogenesis and Prevention

Macula lutea, the yellow sot or fovea centralis in eye serves the distinctive central vision in perceiving visual cues and contributing to task performance. Impaired visual acuity in later years in life, compromises safety, productivity and life quality. Carotenoid pigment content declines with cumulation of light induced damage through aging process in retina. The progression of resultant macular degeneration is aggravated by oxidative stress, inflammation, raised blood sugar and vasculopathy associating aging. Senescent dry degeneration involves drusen (a compound of glycolipid and glycol-conjugate core) deposition that impairs metabolic connectivity of upper layers of retina with choroid. Degeneration of retinal pigment epithelium (RPE) and photoreceptors thus, results. The late more severe form of age related macular degeneration (AMD), involves factors inducing choroidal neo-vascularization. Leaky neo-capillaries speed degenerative process of retina. Most age related pathologies are initiated by metabolic disruptions and AMD shares features of systemic atherosclerosis. An aberrant tissue response to free radical stress, vasculopathy and local ischaemic underlies AMD pathogenesis.There is no specific treatment modality and prudent strategy in prophylaxis only. Early diagnosis and proper control of environmental and lifestyle factors are strived by newer biomedical understanding, which is briefly reviewed

Floristic Diversity and Indigenous Uses of Forest Vegetation of Dabka Watershed in Indian Central Himalaya

A species check list of flora is presented in and around Dabka watershed, District Nainital of Uttarakhand, together with preliminary Phytosociological data for the major species of communities. A total of 45 tree species, 09 shrubs and 32 species of grasses and herbs recorded. Results of quantitative sampling indicate that Adina cordifolia (IVI 66.26) species dominated in the watershed area. Other important woody associates include Quercus incana (IVI 26.74), Pinus roxburghii (IVI 14.64). The diversity range for tree layer was 3.16 followed by herbs (2.92) and then shrubs (1.84); all of the tree species were contagious distribution. Analysis of use diversity showed that the recorded species provide 8 Different uses to local communities. About 56% of the species are used for more than one use categories. Although some species have multiple uses, the average number of uses per species is three. The uses were placed under three major use categories, which had highest contribution of the total uses. These include food, medicinal and fuel/fodder/timber/ dye etc. use value of species shows that about 38% species use in medicinal purposes, 32% species used for edible purposes and 33% use as various purposes. The current work provide the baseline floristic and ecological data and documents the structure and composition of vegetation and also collect information about ethno-botanic used to explore the conservation status and folk medicinal knowledge of the surrounding peoples of the study area, for managers planners and policy makers to understand such simple method assessing the biodiversity of any potential area for conservation in any region. The finding suggest that, public awareness and community based management need to be encouraged at all levels in order to overcome the threats; further investigation into nutritional properties of all the species reported; study on the pharmacological attributes would help to understand their medicinal application. Furthermore urgent collection of germplasm from areas under human pressure is recommended