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

Characteristics of the five-kingdom classification, Characteristics of the ...

Characteristics of the Five-Kingdom classification At present, as you know, the trend is to follow the five-kingdom classification. However, while accepting the Five-Kingdom C

State the lantern test of eye, State the Lantern Test  The patient nam...

State the Lantern Test  The patient names colours displayed in the lantern and the mistakes are analyzed. This is not the best method of testing because it depends on the natu

Gutta percha removal-endodontics principles, Gutta percha removal: Poor...

Gutta percha removal: Poorly condensed GP or single cone technique, -    Hedstrom hand files. -    Barded broaches. The well condenced GP: -    Rotary files; -    Ultrasoni

Explain the steps of converting food into energy, Explain the steps of conv...

Explain the steps of converting food into energy. There are four steps to convert food into energy: a) Ingestion, mastication and swallowing : Ingestion or taking in of food

Calamity & emergency management - nutritional needs of human, Define Calami...

Define Calamity and Emergency Management - nutritional needs of humans? During past many years, we have seen, as well as, realized -that natural calamities strikes countries, b

Aortic valve repair-types of surgery in ar, Aortic Valve Repair :  ...

Aortic Valve Repair :  In, acquired AR associated with VSD and prolapse of a cusp, repair is often successful. VSD is closed and at the same time the prolapsed part of

Determine food sources for zinc, Determine Food Sources of Zinc? Zinc i...

Determine Food Sources of Zinc? Zinc is normally associated with the protein and/or nucleic acid fraction of foods. Thus, foods high in proteins are good sources of zinc. Lean

What are some examples of biological activities, Q. What are some examples ...

Q. What are some examples of biological activities in which osmosis plays an significant role? Hemolysis destruction of red blood cells by entrance of water, the hydric regulat

Plants of estuary, Plants of Estuary The plants of the estuary are of ...

Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants

Glucose-6-phosphate, Three molecules of ducose-6-phosphate  yield 3 molecul...

Three molecules of ducose-6-phosphate  yield 3 molecules of CO,  and 3 molecules of five carbon residues (pentose sugar). The latter are converted ultimately to  2 molecules  of  g

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