Uvavanyo lweVitamin D: yeyantoni, yenziwa njani kwaye iziphumo

Umxholo

• Zithetha ntoni iziphumo
• Ukuhla kwamaxabiso e-vitamin D
• Ukunyuka kwamaxabiso evithamini D

Uvavanyo lwevithamini D, ekwabizwa ngokuba yihydroxyvitamin D okanye uvavanyo lwe-25 (OH) D, lujolise ekuqwalaseleni uxinzelelo lwevithamini D egazini, njengoko kubalulekile ivithamini kulawulo lwephosphorus kunye namanqanaba ecalcium, inendima ebalulekileyo kumathambo imetabolism, umzekelo.

Olu vavanyo luhlala lucelwa ngugqirha ukuba abeke iliso kunyango olunokubuyiselwa kwi-vitamin D okanye xa kukho iimpawu kunye neempawu ezinxulumene nokuqaqanjelwa kwethambo, ezinjengeentlungu kunye nobuthathaka bemisipha, umzekelo, ukucelwa rhoqo kunye nomthamo wecalcium, PTH phosphorus egazini.

Zithetha ntoni iziphumo

Ukusuka kwiziphumo zedosi ye-25-hydroxyvitamin D kunokwenzeka ukuba ubonise ukuba ngaba umntu unexabiso elaneleyo levithamini D elijikeleza egazini ukugcina impilo yethambo. Ngokwengcebiso ka-2017 yoMbutho waseBrazil we-Clinical Pathology / Laboratory Medicine kunye noMbutho waseBrazil we-Endocrinology kunye neMetabology ^[1], amanqanaba aneleyo evithamini D ngala:

• Kubantu abaphilileyo:> 20 ng / ml;
• Kubantu beqela lomngcipheko: phakathi kwe-30 kunye ne-60 ng / mL.

Ukongeza, kumiselwe ukuba kukho umngcipheko wetyhefu kunye ne-hypercalcemia xa amanqanaba e-vitamin D engaphezulu kwe-100 ng / mL. Ngokumalunga namanqanaba athathwa njengoneleyo okanye oshiyekileyo, izifundo ziyenziwa ngale njongo, nangona kunjalo kuyacetyiswa ukuba abantu ababonisa amaxabiso angaphantsi kokucetyiswayo bakhatshwe ngugqirha kwaye, ngokwenqanaba elichongiweyo, olona nyango lufanelekileyo luyaqaliswa .

Ukuhla kwamaxabiso e-vitamin D

Amaxabiso anciphileyo e-vitamin D abonisa i-hypovitaminosis, enokubangelwa kukungabikho elangeni okanye ukutya okuncinci okunotye ivithamin D okanye izinto ezingaphambi kwayo, njengeqanda, intlanzi, itshizi kunye nama-mushroom, umzekelo. Fumanisa okunye ukutya okunotye ivithamin D.

Ukongeza, izifo ezinje ngesibindi esinamafutha, i-cirrhosis, ukungoneli kwepancreatic, isifo sokudumba, iirickets kunye ne-osteomalacia kunye nezifo ezikhokelela ekudumbeni emathunjini kungakhokelela ekuswelekeni kwe-vitamin D okanye ukusilela.

Ukunyuka kwamaxabiso evithamini D

Amaxabiso anyukayo e-vitamin D abonisa i-hypervitaminosis, eyenzeka ngenxa yokusebenzisa izixa ezikhulu zevithamini D ixesha elide. Ukuhlala elangeni ixesha elide akukhokeleli kwi-hypervitaminosis, njengoko umzimba ukwazi ukulawula ubungakanani bevithamini D kwaye xa kufunyaniswa iindawo ezifanelekileyo, kubonisiwe ukuba ukwenziwa kwe vithamin D kukukhuthaza kwelanga kuyaphazamiseka kwaye, ke ngoko Amanqanaba ayityhefu kavithamin D ngenxa yokuba selangeni ixesha elide.