Epidermal structural thiab biochemical hloov nyob rau hauv daim tawv nqaij laus

Cov metabolism ntawm cov epidermis yog tias cov basal keratinocytes maj mam txav mus rau qhov sib txawv ntawm tes, thiab thaum kawg tuag los ua ib qho tsis muaj nucleated stratum corneum, thiab tom qab ntawd poob tawm. Nws yog feem ntau ntseeg hais tias nrog kev loj hlob ntawm lub hnub nyoog, lub basal txheej thiab spinous txheej yog tsis zoo, lub hlws ris ntawm lub epidermis thiab dermis yuav tiaj tus, thiab lub thickness ntawm lub epidermis txo. Raws li cov txheej txheem sab nraud ntawm tib neeg lub cev, cov epidermis yog nyob rau hauv kev sib cuag ncaj qha nrog rau sab nraud ib puag ncig thiab yooj yim tshaj plaws cuam tshuam los ntawm ntau yam sab nraud. Epidermal aging feem ntau yooj yim qhia txog kev cuam tshuam ntawm lub hnub nyoog thiab lwm yam ntawm tib neeg kev laus.

Nyob rau hauv lub epidermis ntawm daim tawv nqaij laus, qhov txawv ntawm qhov loj me, morphology thiab staining zog ntawm basal txheej cell nce, qhov sib txuas ntawm epidermis thiab dermis maj mam ua tiaj tus, tus ntsia thawv epidermal ua ntiav, thiab lub thickness ntawm cov epidermis txo. Epidermal thickness txo los ntawm kwv yees li 6.4% ib xyoo caum, thiab txo qis txawm tias sai dua rau cov poj niam. Epidermal thickness txo thaum muaj hnub nyoog. Qhov kev hloov pauv no tau tshaj tawm nyob rau hauv cov chaw raug, suav nrog lub ntsej muag extensor ntawm lub ntsej muag, caj dab, tes, thiab forearms. Keratinocytes hloov cov duab raws li daim tawv nqaij hnub nyoog, ua luv luv thiab fatter, thaum keratinocytes ua loj dua vim luv luv epidermal turnover, lub sij hawm rov ua dua ntawm cov laus epidermis nce, proliferative kev ua ntawm cov epidermal hlwb poob, thiab lub epidermis yuav thinner. nyias, ua rau daim tawv nqaij poob elasticity thiab wrinkle.

Vim cov kev hloov morphological no, lub epidermis-dermis hlws ris tsis nruj thiab yooj yim rau sab nraud quab yuam puas. Tus naj npawb ntawm melanocytes maj mam txo qis tom qab hnub nyoog 30 xyoo, lub peev xwm loj hlob zuj zus, thiab kev ua haujlwm enzymatic ntawm melanocytes txo qis ntawm tus nqi ntawm 8% -20% ib xyoo caum. Txawm hais tias daim tawv nqaij tsis yooj yim rau tan, melanocytes yog nquag mus rau hauv zos proliferation los tsim pigmentation me ntsis, tshwj xeeb tshaj yog nyob rau hauv tshav ntuj raug tshav kub. Langerhans hlwb kuj txo qis, ua rau daim tawv nqaij tiv thaiv kev ua haujlwm poob qis thiab ua rau muaj kab mob sib kis.

Daim tawv nqaij anlayzertshuab tuaj yeem siv los txheeb xyuas lub ntsej muag ntawm daim tawv nqaij wrinkles, kev ntxhib los mos, collagen poob, thiab lub ntsej muag contour los pab txhawm rau txheeb xyuas lub ntsej muag ntawm daim tawv nqaij laus.


Post lub sij hawm: May-12-2022

Hu rau US kom paub ntau ntxiv

Sau koj cov lus ntawm no thiab xa tuaj rau peb