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EBINTU BYONNNA N’AMAWULIRE GW’EBINTU EBIweereddwa KU MUTINDO GUNO BIKOZESEBWA KU KUSASANYA AMAWULIRE N’EBIKOLWA BY’OKUSOMESA.
Ebintu ebiweereddwa ku mukutu guno bigendereddwamu kunoonyereza mu kisenge (in vitro research) byokka. Okunoonyereza mu vitro (Olulattini: *mu ndabirwamu*, ekitegeeza mu bikozesebwa mu ndabirwamu) kukolebwa ebweru w’omubiri gw’omuntu. Ebintu bino si bya ddagala, tebikkiriziddwa kitongole kya Amerika ekivunaanyizibwa ku by’emmere n’eddagala (FDA), era tebirina kukozesebwa kuziyiza, kujjanjaba oba kuwonya mbeera yonna ya bujjanjabi, bulwadde oba bulwadde. Kikugirwa nnyo mu mateeka okuyingiza ebintu bino mu mubiri gw’omuntu oba ebisolo mu ngeri yonna.
Okulambika okutwaliza awamu
Ekibumba, ng’ekitundu ekikulu eky’okukyusakyusa emmere mu mubiri gw’omuntu, kiyinza okwonooneka olw’ensonga ez’enjawulo, gamba ng’ebiragalalagala, omwenge, yinfekisoni z’akawuka, n’obutwa obuva mu butonde. Singa okwonooneka kw’ekibumba tekufugibwa bulungi, kuyinza okugenda mu maaso n’okufuuka okuzimba ekibumba, okuzimba ekibumba, oba wadde kookolo w’ekibumba, ekintu eky’akabi ennyo eri obulamu bw’omuntu. Oxidative stress ekola kinene mu kukula kw’okwonooneka kw’ekibumba. Ekibumba bwe kikwatibwa ebintu ebyonoona, enzikiriziganya wakati w’enkola y’omubiri ey’okuziyiza obuwuka obuleeta obulwadde (oxidative and antioxidant systems) kutaataaganyizibwa, ekivaako okukola ebisusse ebika bya oxygen ebikola (ROS) n’ebirungo ebirala ebiyitibwa free radicals. Ebirungo bino ebiyitibwa free radicals bisukka obusobozi bw’omubiri obuziyiza obuwuka obuleeta obulwadde buno okubiziyiza, ne bivaako enkola za oxidative stress reactions. Free radicals zino ezisukkiridde zilumba macromolecules z’ebiramu ez’obutoffaali bw’ekibumba, gamba nga obuwuka obuyitibwa cell membranes, proteins, ne nucleic acids, ekivaamu okwonooneka kw’obutoffaali bw’ekibumba, apoptosis oba necrosis.
Ekifaananyi 1 Enteekateeka y’enkola ey’awamu ey’okunyigirizibwa okw’okwokya (oxidative stress) okuleetebwa ensonga ez’enjawulo ku bulwadde bw’ekibumba.
Livagen, ng’ekintu ekirina obusobozi bw’okuziyiza obuwuka obuleeta obulwadde, kisobola okukendeeza ku kwonooneka kw’ekibumba okuva ku situleesi y’okwokya nga kitereeza enkola y’omubiri ey’okuziyiza obuwuka obuleeta obulwadde, nga kiwa enkola empya ey’okuziyiza n’okujjanjaba obuvune bw’ekibumba.
Omulimu gwa Livagen mu Antioxidant Stress n’obuvune mu kibumba
Okulungamya emirimu gya Enzyme eziziyiza obuwuka obuleeta obulwadde
Livagen eyongera nnyo emirimu gy’enziyiza eziziyiza obuwuka obuleeta obulwadde mu kibumba, nga superoxide dismutase (SOD) ne glutathione peroxidase (GSH-Px). SOD ye layini esooka ey’okwekuuma mu nkola y’omubiri ey’okuziyiza obuwuka obuleeta obuwuka obuleeta obuwuka obuleeta obuwuka obuleeta obuwuka obuleeta obuwuka obuleeta obuwuka obuziyiza obuwuka obuleeta endwadde, etandisa enkola y’okukyusakyusa (dismutation reaction) ya superoxide anion free radicals okukola hydrogen peroxide ne oxygen, bwe kityo ne kikendeeza ku kwonooneka okuva mu superoxide anion free radicals eri obutoffaali bw’ekibumba. GSH-Px ekozesa glutathione ekendeezeddwa (GSH) okukendeeza ku hydrogen peroxide okutuuka mu mazzi ne lipid peroxides okutuuka ku mwenge gwazo ogukwatagana, bulungi okuziyiza okugenda mu maaso kw’enjegere z’amasavu peroxidation n’okukuuma obulungi bw’obuwuka bw’obutoffaali bw’ekibumba.
Okukuuma omutindo gwa Glutathione (GSH).
GSH kirungo kikulu ekiziyiza obuwuka obuleeta obulwadde mu kibumba ekitali kya enzymatic, nga kikola kinene mu kukuuma intracellular redox homeostasis. Livagen esobola okukuuma emiwendo gya GSH mu kibumba nga etumbula okukola GSH oba okuziyiza okuginywa. GSH tekoma ku kwetaba butereevu mu nkola za free radical scavenging reactions naye era ekola nga substrate ya GSH-Px, okutumbula omulimu gwayo ogw’okuziyiza obuwuka. Ekibumba bwe kifuna situleesi ya oxidative stress, GSH enywa mu bungi ekivaako okukendeera kw’emiwendo gyayo. Okuyingira mu nsonga za Livagen kuyinza okuzzaawo emiwendo gya GSH, bwe kityo ne kyongera ku busobozi bw’ekibumba obw’okuziyiza obuwuka obuleeta obuwuka obuleeta obulwadde n’okukendeeza ku kwonooneka kw’obutoffaali bw’ekibumba obuva ku situleesi y’okwokya.
Okuziyiza okwolesebwa kw’ensonga ezizimba
Oxidative stress ne inflammatory responses bikwatagana era ne binywezagana mu kiseera ky’okwonooneka kw’ekibumba. Livagen esobola okukendeeza ku kuzimba kw’ekibumba nga eziyiza okwolesebwa kw’ebintu ebizimba, bwe kityo mu ngeri etali butereevu n’ekola ekikolwa eky’okuziyiza obuwuka obuleeta obulwadde. Nuclear factor-κB (NF-κB) ye nsonga enkulu ey’okuwandiika ekola kinene mu kulungamya eby’okuddamu by’okuzimba. Ekibumba bwe kikwatibwa ebizibu ebivaako obuvune, NF-κB ekola, ekivaako okulaga ensonga ez’enjawulo ezizimba nga tumor necrosis factor-α (TNF-α) ne interleukin-1β (IL-1β). Ensonga zino ezizimba zongera okusajjula situleesi y’okwokya, ne zikola enzirukanya embi. Livagen esobola okuziyiza okukola kwa NF-κB, okukendeeza ku kwolesebwa kw’ensonga ezizimba, bwe kityo ne kikendeeza ku kwonooneka kw’okuzimba ekibumba n’okumalawo situleesi y’okuzimba.
Ekifaananyi 2 Enkola ya redox homeostasis mu kibumba.
Okukendeeza ku kwonooneka kw’amasavu (lipid peroxidation).
Lipid peroxidation y’emu ku nkola enkulu oxidative stress mw’ereeta okwonooneka kw’obutoffaali bw’ekibumba. ROS zilumba asidi z’amasavu ezitali zijjudde ku luwuzi lw’obutoffaali, ne zikola enkola z’okufuuka amasavu (lipid peroxidation reactions) ne zikola ebiva mu kukola amasavu (lipid peroxidation products) nga malondialdehyde (MDA). Ebintu bino biba bya butwa bw’obutoffaali, bitaataaganya ensengekera n’enkola y’obuwuka obuyitibwa cell membranes era ne bivaako obutoffaali bw’ekibumba okwonooneka. Livagen, okuyita mu bikolwa byayo ebiziyiza obuwuka obuleeta obulwadde, esobola bulungi okuziyiza enkola za lipid peroxidation, okukendeeza ku miwendo gya MDA mu bitundu by’ekibumba, okukendeeza ku kwonooneka kw’olususu lw’obutoffaali, n’okukuuma enkola eya bulijjo ey’obutoffaali bw’ekibumba.
Okukozesa Livagen mu kukuuma obuvune bw’ekibumba
Obuvune bw’ekibumba obuva ku ddagala
Obuvune bw’ekibumba obuva ku ddagala y’emu ku ndwadde z’ekibumba ezisinga okutawaanya abantu. Eddagala lingi, nga acetaminophen n’eddagala eriweweeza ku kafuba, liyinza okwonoona ekibumba nga lijjanjaba endwadde. Livagen eraga ebikolwa ebirungi ennyo eby’obukuumi mu bikolwa by’ebisolo eby’obuvune bw’ekibumba obuva ku ddagala. Mu nkola y’obuvune bw’ekibumba obuva ku acetaminophen, okusooka okujjanjabwa ne Livagen kwavaamu okukendeera okw’amaanyi mu miwendo gya serum alanine transaminase (ALT) ne aspartate transaminase (AST), ekiraga okukendeera mu buzibu bw’obuvune bw’ekibumba. Okugatta ku ekyo, okwekenneenya ebitundu by’ekibumba mu histopathological kwalaga nti Livagen yalongoosa enkyukakyuka mu nkula y’obutoffaali bw’ekibumba, yakendeeza ku kufa kw’obutoffaali bw’ekibumba, n’okukendeeza ku kuyingira kw’obutoffaali obuzimba. Kino kiraga nti Livagen erina omugaso oguyinza okukozesebwa mu kuziyiza n’okujjanjaba obuvune bw’ekibumba obuva ku ddagala era eyinza okukola ng’enkola empya ey’obujjanjabi obw’okugatta mu buvune bw’ekibumba obuva ku ddagala.
Okulumwa ekibumba olw’omwenge
Okunywa omwenge omungi okumala ebbanga eddene kiyinza okuvaako okulumwa ekibumba olw’omwenge, ne kikosa nnyo omutindo gw’obulamu n’obulamu bw’abalwadde. Livagen era eraga obukuumi ku buvune bw’ekibumba olw’omwenge. Mu kugezesa ebisolo ku buvune bw’ekibumba olw’omwenge, oluvannyuma lw’okuweebwa Livagen, obubonero bw’okunyigirizibwa okw’okwokya mu kibumba bwalongoosebwa, gamba ng’okweyongera kw’emirimu gya SOD n’okukendeeza ku miwendo gya MDA. Livagen era esobola okulungamya emirimu gy’enziyiza ezikwatagana n’okukyusakyusa omwenge, okukendeeza ku kukola ebirungo ebiyitibwa free radicals mu kiseera ky’okukyusakyusa omwenge, bwe kityo ne kikendeeza ku kwonooneka kw’ekibumba okuva ku mwenge. Livagen esobola okuziyiza okuzimba ekibumba okuva ku mwenge, okukendeeza ku muwendo gw’ebintu ebizimba, n’okwongera okukuuma ekibumba obutakwonooneka. Livagen erina obusobozi okufuuka eddagala eddungi mu kuziyiza n’okujjanjaba obuvune bw’ekibumba olw’omwenge.
Mu bufunzi
Livagen ekola ebikolwa by’okunyigirizibwa kw’ekibumba ng’eyita mu nkola eziwera, omuli okulungamya emirimu gy’enziyiza y’ekibumba, okukuuma emiwendo gya GSH, okuziyiza okulaga kw’ensonga ezizimba, n’okukendeeza ku kwonooneka kw’amasavu peroxidation, bwe kityo n’ewa ebikolwa eby’obukuumi okuva ku kwonooneka kw’ekibumba okuva ku nsonga ez’enjawulo. Kiraga omugaso oguyinza okukozesebwa mu nnimiro nga okwonooneka kw’ekibumba olw’eddagala n’okwonooneka kw’ekibumba olw’omwenge.
Ensonda
[1] Liu Y, Liu Y, Dou B, n’abalala. Obukuumi Effect ya Resveratrol ku Hepatocyte Apoptosis mu Kibumba Omwenge[J]. Journal of Ebintu ebikozesebwa mu biramu n’amaanyi g’ebiramu, 2021. https://api.semanticscholar.org/CorpusID:241263658. Enkola y’okukuuma obutonde bw’ensi
[2] Li S, Tan H, Wang N, n’abalala. Omulimu gwa Oxidative Stress ne Antioxidants mu ndwadde z’ekibumba[J]. Ekitabo ky'ensi yonna ekya Sayansi wa molekyu, 2015, 16 (11): 26087-26124.DOI: 10.3390 / ijms161125942.
[3] Zhang Z, Gao L, Cheng Y, n’abalala. Resveratrol, eddagala ery’obutonde eriziyiza obuwuka obuleeta obulwadde, lirina ekikolwa eky’obukuumi ku buvune bw’ekibumba obuva ku kukwatibwa arsenic etali ya kiramu[J]. Okunoonyereza ku by’obulamu mu nsi yonna, 2014,2014:617202.DOI:10.1155/2014/617202.
Ekintu ekiriwo okukozesebwa mu kunoonyereza kwokka:
