How are the change in the ageing lens occurred in metabolism, Biology

Assignment Help:

How are the change in the ageing lens occurred in the metabolism?

Changes in the Ageing Lens

1) Physical changes: Lens weight increases, light transmission decreases, light scattering increases, fluorescein property increases and refractive index increases with age.

2) Metabolic changes: Proliferative capacity of lens decreases, many enzymes decreases, and insoluble albuminoids increases, glutathione decreases along with ascorbic acid, superoxide dismutase and glucose 6 phosphate dehydrogenase decreases.

3) Changes in the crystallins: Alpha and gamma crystallins decreases. Along with this gamma crystallins has a disulphide bond a11d increase in bela and non-tryotophan fluorescence.

4) Changes in plasma membrane and cytoskeleton.

5) There is loss of hexagonal cross linkage of fibres. Membrane protein and lipids are decreased. All the large membrane polypeptides are reduced along with changes in membrane rigidity.


Related Discussions:- How are the change in the ageing lens occurred in metabolism

What is the endocrine function of the placenta, What is the endocrine funct...

What is the endocrine function of the placenta? The placenta is not a permanent gland of the endocrine system but it also has endocrinal function. The placenta produces estroge

Bud dormancy - plant growth substances, Bud Dormancy - Plant Growth Substan...

Bud Dormancy - Plant Growth Substances Environmental Factors The most important factor inducing dormancy appears to be photoperiod. Short days induce dormancy in many w

Ecosystem balance, Ecosystem Balance We take up, another parameter of ...

Ecosystem Balance We take up, another parameter of ecosystem balance. One factor that affects the stability or persistence of some ecosystems under small or moderate environme

Nervous system and nerve cells, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE

Effects of long term malnutrition on adults, Effects of long term malnutrit...

Effects of long term malnutrition on adults In adults, once the stored carbohydrates and fats are used up, the body starts using proteins to generate energy. These protei

Signs and symptoms of hypothyroidism, Q. What are some signs and symptoms f...

Q. What are some signs and symptoms found in patients with hypothyroidism? In hypothyroidism the production and secretion of T3 and T4 are impaired. Since these thyroid hormone

Helobial type - endosperm, Helobial Type - Endosperm This type of endo...

Helobial Type - Endosperm This type of endosperm is intermediate between the nuclear and the cellular types. The division of the primary endosperm nucleus is followed by the f

Lungs - respiration, Lungs - Respiration Lungs can be simple, characte...

Lungs - Respiration Lungs can be simple, characterised by air exchange with surrounding environment by diffusion only. These are called the diffusion lungs and are present in

What do you mean by polyester, Q. What do you mean by Polyester? Polyes...

Q. What do you mean by Polyester? Polyester (ES) or polyethylene terephthalate (PET): PET is a very strong transparent glossy film, which has good moisture and gas barrier p

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd