Rumbunan tanning (gadojin rana) suna fitar da hasken ultraviolet (UV), galibi a cikin nau'in UVA (315–400 nm), da kuma ƙaramin matakin UVB (280–315 nm). Duk da cewa hasken rana na halitta yana ɗauke da daidaiton adadin nau'ikan radiation guda biyu, kayan aikin tanning yawanci suna fitar da mafi girman matakan UVA, wanda zai iya samun tasirin halittu daban-daban akan fata da lafiyar gaba ɗaya. Wannan labarin yana bincika tasirin likita da fata na fallasa UVA da UVB daga rumfunan tanning.
1. UVA vs. UVB: Manyan Bambance-bambance
| Halaye | UVA (Dogon zango) | UVB (Gajeren raƙuman ruwa) |
|---|---|---|
| Zurfin Shiga Cikin Gida | Zurfi (dermis) | Na waje (epidermis) |
| Tasirin Tanning | Nan take (mai hana iskar oxygen) | Jinkiri (mai motsa melanin) |
| Haɗin Vitamin D | Mafi ƙaranci zuwa babu ɗaya | Babban tushe |
| Tsarin Lalacewar DNA | Tsarin ROS a kaikaice (tsarin ROS) | Direct (thymine dimers) |
| Ciwon daji | Yana da alaƙa da melanoma | An danganta shi da cutar kansar squamous cell (SCC) |
| Tsangwama ga garkuwar jiki | Mai ƙarfi (tsari) | Matsakaici (na gida) |
2. Tasirin UVA a fannin likitanci a cikin injunan gyaran gashi
A. Tsufa fata (hoto):
UVA yana shiga cikin zurfin fata, yana rushe collagen da elastin ta hanyar nau'in oxygen mai amsawa (ROS).
Wannan yana haifar da wrinkles, fata mai launin fata da kuma hasken rana (elastosis) (tsufa kafin lokacin haihuwa).
B. Dakatar da garkuwar jiki:
UVA yana canza aikin ƙwayoyin Langerhans, wanda hakan ke rage garkuwar fata.
Wannan yana ƙara saurin kamuwa da cututtukan fata (misali HPV da herpes) kuma yana iya raunana martanin allurar rigakafi.
C. Hadarin Melanoma
UVA yana haifar da lalacewar DNA na oxidative, wanda ke ba da gudummawa ga melanoma mai tsanani (nau'in cutar kansar fata mafi muni).
Bincike ya nuna cewa mutanen da ke amfani da gadajen gyaran gashi suna da haɗarin kamuwa da cutar melanoma da kashi 59% (JAMA Dermatology, 2014).
D. Babu wani muhimmin samar da bitamin D
Ba kamar UVB ba, UVA ba ya canza 7-dehydrocholesterol zuwa bitamin D₃, ma'ana cewa gadajen tanning ba su da tasiri wajen haɗa bitamin D.
3. Tasirin UVB a fannin likitanci a cikin injunan tanning
A. Kumburin rana da lalacewar DNA
UVB yana haifar da maye gurbin DNA kai tsaye (thymine dimers), wanda ke ƙara haɗarin kamuwa da cutar kansar squamous cell (SCC) da kuma cutar kansar basal cell (BCC).
Gadojin tanning tare da UVB suna taimakawa wajen haifar da ƙonewar rana (erythema).
B. Haɗakar Vitamin D (an iyakance shi a gadajen yin tanning)
Duk da cewa UVB yana da mahimmanci don samar da bitamin D₃, yawancin injunan yin tanning suna rage yawan fallasa UVB don rage haɗarin ƙonewa, wanda hakan ke sa su zama marasa amfani ga wannan dalili.
C. Dakatar da Tsarin Garkuwar Jiki na Gida
UVB yana rage adadin ƙwayoyin da ke samar da antigen a cikin fata, amma yana haifar da ƙarancin rage garkuwar jiki fiye da UVA.
Yadda ake magance lalacewar UV:
Sanya tabarau masu kariya.
Yi amfani da man shafawa mai kariya daga hasken rana (sunscreen) wanda ke da kariya daga UVA/UVB.
Zaɓi kayan aikin rage hasken rana.