alopecia hair growth

วันจันทร์ที่ 28 กรกฎาคม พ.ศ. 2557

[articles] information of hereditary-affected hair loss


 skin hair

information of hereditary-affected hair loss
Causes of hair loss
Hair loss is caused by 5-Alpha reductase enzyme reacting with testosterone secreted from the prostate and steroid hormones. Dihydrotestosterone (DHT) is a leading cause of the fat accumulated on head skin and sebaceous glands attached to hair follicles. DHT stimulates the enlargement of sebaceous glands and fat accumulation, resulted in the clogged capillaries nourishing the follicles and the blood carrying less nutrients and oxygen to cells. In addition, the fat inhibits the normal hair formation process and resulted that new hair replacing old hair becomes smaller and smaller, and eventually leading to hair loss and baldness and just the vellus hair is left.
5 alpha-reductase enzymes are commonly found in the prostate, testes, hair follicles, and adrenal glands. This enzyme achieves the transformation of the testosterone into dihydrotestosterone [reductase enzyme synthesis of DHT]


Image content from wikipedia

SKIN HAIR 


skin hair

§  The insertion of the sebaceous glands into the hair shaft

 skin hair

§  The insertion of the sebaceous glands in the hair shaft

§  Medical treatment approach


1.    Reductase is inhibited by drug (MK-906, Proscar and Propecia, synthetic drug used to treat prostate cancer and male pattern baldness (MPB), Type II.  Reductase enzyme achieves the transformation of the testosterone into dihydrotestosterone (DHT).

2.    Minoxidil is a vasodilator which is responsible for dilating blood vessels and opening potassium channels that allow more oxygen to blood and nutrients to the hair follicles. This can cause pores in Telogen phase, which is secreted and then replaced by new thicker hairs in Anagen phase. Minoxidil is an antihypertensive drug and dilating blood vessel. It is composed of the nitric oxide.
Minoxidil is less effective with a presence of the large areas of hair loss. In addition, the effectiveness is largely demonstrated in younger men whose experience of hair loss is less than 5 years.

3.    Follicular Unit Transplantation (FUT) is a hair restoration technique for patients with fat (oil) glands, nerves, small muscles, and sometimes vellus.


FOLLICULAR UNIT EXTRACTION (FUE / FIT) in hair transplant 
Follicular Unit Extraction or known as “FUE” or “FIT” is a new way of hair transplant; each unit of follicular hair is pulled using the small instrument.

Follicular unit extraction procedures  

skin hair
Two months after the follicular unit extraction 

skin hair
 Eight months after the follicular unit extraction 
Unit of follicular hair is pulled out of the scalp by using the extractor with small diameter.

skin hair 

baldness
Follicular unit extraction prepared for hair transplantation and restoration

baldness 

baldness

Results of follicular unit extraction
Before

baldness 

baldness

After

Baldness 

Baldness 


Baldness

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