It will be of great interest to test the role of these evolutionary models of Y degeneration using population genomic studies of the D. albomicans neo-sex chromosomes.
This is likely to reflect the higher prevalence of cataract and retinal disease such as age-related macular degeneration among this population, and again highlights the significant burden that visual impairment will have upon an ageing population.
To characterize ACL cellular and ECM changes in aging and degeneration, the donor population was divided into three groups; normal (<45 years old with normal ACL and normal cartilage), aging (>60 years old with mild ACL degeneration and minimal cartilage degeneration), and degenerated (>60 years old with moderate to severe ACL degeneration and cartilage degeneration).
The increasing frequencies of traumatic and pathologic bone defects, as well as the skeletal problems due to osteoporosis and bone degeneration in aging population, request a societal need for improved therapeutic products.
Polypoidal choroidal vasculopathy (PCV) is a common subtype of wet age-related macular degeneration in Asian populations, whereas choroidal neovascularization is the typical subtype in Western populations.
But, recent findings indicate that the degeneration of small populations of nerve cells in the brain may be important.
Alzheimer's disease (AD) is characterized by cognitive impairment, progressive degeneration of neuronal populations in the neocortex and limbic system, and formation of amyloid plaques and neurofibrillary tangles.
The neurodegenerative dementias can be caused by a multiplicity of conditions or diseases that lead to the progressive and irreversible degeneration of specific populations of neurons and their connections.
These two potential disease mechanisms are not mutually exclusive, and might also lead together to degeneration of neuronal populations in either the frontal cortex (FTLD) or the spinal cord (ALS).
Liuke et al. [ 50] also reported an association between being overweight and lumbar disc degeneration in a population-based MRI study in middle-aged men, and provided evidence that a BMI above 25 kg/m increased the risk of disc degeneration, with a greater effect at younger ages than in middle age.
