Isihloko
I-methylene blue ne-HIV: izimangalo zokwelapha uma ziqhathaniswa nocwaningo lwe-plasma
I-methylene blue ayiyona indlela esunguliwe yokwelapha i-HIV, futhi i-methylene blue ephuzwa ngomlomo noma ethengiswa ezitolo akufanele ithathe indawo yokwelashwa ngemishanguzo yokuthithibalisa igciwane enqunywe udokotela. Ucwaningo olubonisa ukuthi i-methylene blue nokukhanya kunganciphisa amandla e-HIV okutheleleka esampuleni ye-plasma luphendula umbuzo ohlukile: ingabe inqubo ethile ingenza umkhiqizo wegazi uphephe kakhudlwana ngaphambi kokusetshenziswa?
Lo mehluko uncike ekutheni indlela isetshenziswe kuphi. Isitsha esine-plasma singaphandle komzimba. Umuntu one-HIV unokutheleleka okubandakanya amangqamuzana nezicubu eziphilayo. Ukudlulisela umphumela usuka kwesinye salezi zimo uye kwesinye kudinga ubufakazi bocwaningo lweziguli, hhayi nje igama lekhemikhali elifanayo.
Lokho okwalinganiswa ukuhlola kokuqala kwe-plasma
Ocwaningweni lukaLambrecht nozakwabo lwango-1994, abacwaningi bafaka i-HIV-1 enamandla okutheleleka aphezulu ku-plasma yabantu eyayiqandiswe isentsha. Baveza isampula ekukhanyeni okubonakalayo ine-methylene blue engu-1 micromolar. Amandla okutheleleka ahlolwa ngokusebenzisa amangqamuzana e-MT-4 ezilinganisweni zokuhlanjululwa kwesampula; lawa ngamangqamuzana akhuliswa elabhorethri.
Ukuncipha okubikiwe kwakungu-4.3 log10 ngemva kwemizuzu emihlanu futhi okungenani kungu-6.32 log10 ngemva kwemizuzu eyishumi, lapho amandla okutheleleka ayengaphansi komkhawulo wokutholwa yisivivinyo. I-methylene blue ngaphandle kokukhanyiswa, kanye nokukhanyiswa ngaphandle kukadayi, ngakunye kwaba nomphumela omncane kakhulu. Indlela eyahlolwa kwakuyinhlanganisela yakho kokubili.
Ukuncipha kwe-log10 kuchaza ukuncipha ngezilinganiso zamandla eshumi: ukuncipha ngama-log ayisithupha kuhambisana nokuncipha okuphindwe ngesigidi. Inkulumo ethi “ngaphansi komkhawulo wokutholwa” isho ukuthi isivivinyo sasingasakwazi ukuthola lokho okwakulinganiswa ngaphansi kwezimo zaso zokuhlola. Lokhu akufakazeli ukuthi igciwane lalingasekho nhlobo noma ukuthi kwatholakala ikhambi.
Lezi kwakuyizilinganiso zesampula eyayingcoliswe ngenhloso yokuhlola. Akekho umbambiqhaza owagwinya i-methylene blue, futhi iphepha locwaningo alizange libike ukwehla kwesilinganiso se-HIV egazini lesiguli ngesikhathi sokwelashwa.
Ithebula eliqhathanisa ubufakazi baselabhorethri nobeziguli
Funda umugqa ngamunye wonke ngaphambi kokuqhathanisa imiphumela. Okucwaningiwe, indlela yokusetshenziswa, nalokho okulinganisiwe kufanele konke kuhambisane nesimangalo esenziwayo.
| Isimo sobufakazi | Into noma abantu abacwaningiwe | Indlela esetshenzisiwe nokuthi yenziwa kanjani | Umphumela nokuchazwa kwawo |
|---|---|---|---|
| Ukuhlola kwe-plasma kwango-1994 | I-plasma yabantu efakwe i-HIV-1 | Udayi wafakwa ngokuqondile esampuleni, kwalandela ukukhanya okubonakalayo | Amandla okutheleleka amangqamuzana akhulisiwe ancipha. Lokhu kufakazela ukusebenza ngaphansi kwalezo zimo zesampula, hhayi ukwelapha umzimba wonke. |
| Ucwaningo lokuhlunga nokukhanya lwango-2000 | I-plasma equkethe i-HIV engaphakathi kwamangqamuzana noma amangqamuzana akhulisiwe athelelekile | Ukuhlunga okususa amangqamuzana, bese kusetshenziswa i-methylene blue nokukhanyiswa ngaphandle komzimba | Kwahlolwa ukuqedwa kwamandla okutheleleka ku-plasma ecutshunguliwe. Isinyathelo sokuhlunga siyingxenye yendlela esetshenzisiwe. |
| Isimangalo sokwelapha i-HIV nge-methylene blue ephuzwa ngomlomo | Umuntu one-HIV | Umkhiqizo ogwinyiwe; ukuchayeka komzimba kuwo bekuyodinga ukuchazwa ngokucwaninga | Ukuhlola kwe-plasma okucashuniwe akunikezi miphumela yesilinganiso segciwane egazini lesiguli, yokubuyiselwa kokuzivikela komzimba, noma yenzuzo yokwelashwa ngale ndlela. |
| Ukuhlolwa kokwelapha amazinyo endaweni ethile ngokusebenzisa udayi nokukhanya | Abantu abane-HIV nesifo sezicubu ezisekela amazinyo | I-methylene blue nokwelashwa nge-laser endaweni ethile, kanye nokuhlanza izindawo ezizungeze amazinyo | Izilinganiso zezicubu ezisekela amazinyo zahlola ukwelashwa kwezinsini. Ukufaka abantu abane-HIV ocwaningweni akwenzi i-HIV ibe yilokho ukwelashwa okuqondiswe kukho. |
| Ukwelashwa kwe-HIV okusunguliwe | Abantu okutholakale ukuthi bane-HIV | Ukwelashwa ngemishanguzo yokuthithibalisa igciwane enqunywe udokotela, ekhethelwe umuntu ngamunye | Ukuthithibaliswa okuqhubekayo kwe-HIV RNA ku-plasma, ukusebenza kwamasosha omzimba, nemiphumela yezempilo kuqondisa ukuhlolwa kokusebenza kokwelashwa. |
Umugqa wesibili ubhekisela ocwaningweni lokuhlunga luka-Abe nozakwabo. Lwaluhlose ukubhekana nomkhawulo wokucubungula i-plasma ngokukhanya ngokususa amangqamuzana ngaphambi kokukhanyiswa. Umphumela wokuhlanganisa ukuhlunga nokukhanya awunakuthiwa udalwe udayi ogwinyiwe kuphela.
Umugqa wamazinyo ubhekisela ocwaningweni lwezinyanga eziyisithupha olwalubandakanya abantu abangu-12 abane-HIV. Lwaqhathanisa ukuhlanzwa kwezindawo ezizungeze amazinyo, kufakwe noma kungafakwanga ukwelashwa kwendawo ethile ngodayi nokukhanya, ngaphakathi kwemilomo yababambiqhaza. Imiphumela yayihlanganisa ukujula okulinganiswa ngensimbi yokuhlola izinsini nokunamathela kwezicubu ezisekela amazinyo, hhayi ubufakazi bokuthi i-methylene blue yalawula ukutheleleka nge-HIV emzimbeni wonke.
Kungani umphumela we-plasma ungafakazeli ukwelashwa kumuntu
Isixhumanisi sokuqala esingekho yindlela yokuletha into emzimbeni. Esampuleni yaselabhorethri, abacwaningi balawula ngokuqondile ukuhlangana kukadayi, igciwane, nokukhanya. Ukugwinya umkhiqizo kushintsha indlela yokuwusebenzisa nendawo osebenza kuyo. Isimangalo sokwelashwa ngomlomo singadinga ubufakazi bokuthi umkhiqizo onikeziwe ufinyelela ezindaweni ezifanele, ube nomphumela owusizo wokulwa negciwane lapho, futhi ukwenze lokho ngokuphepha okwamukelekayo. Ukuhlola kwe-plasma akunikezi noma yiziphi zalezo zilinganiso ezigulini.
Isixhumanisi sesibili esingekho ukutheleleka uqobo. Incazelo ye-NIH ngezinqolobane ze-HIV engasebenzi ichaza amangqamuzana athelelekile angaqhubeka ekhona lapho ukwelashwa okusebenzayo kuthithibalisa ukukhiqizwa kwegciwane. Ukususa amandla okutheleleka esampuleni yoketshezi oluhlukanisiwe akubonisi ukususwa kwalawo mangqamuzana kumuntu. Ngisho nesilinganiso segciwane egazini esingatholakali ngezivivinyo zezokwelapha asisho ukuthi i-HIV isiqedwe ngokuphelele.
Isixhumanisi sesithathu esingekho umphumela. Isivivinyo samandla okutheleleka sihlola ukuthi isampula ingawathelela yini amangqamuzana aselabhorethri. Isivivinyo sesilinganiso segciwane esisetshenziswa ekwelashweni silinganisa i-HIV RNA esampuleni yegazi ethathwe esigulini. Iziqondiso ze-NIH zokuqapha zihlukanisa leso silinganiso se-RNA nesibalo samangqamuzana e-CD4, esisiza ukuhlola ukusebenza kwamasosha omzimba. Lezi zilinganiso ziphendula imibuzo ehlukene futhi azinakusetshenziswa esikhundleni sezinye.
Imiphumela ephathelene nemikhiqizo yegazi nayo inemikhawulo yayo. Uphenyo olushicilelwe ngokudluliselwa kwegciwane ngokumpontshelwa igazi lwabika ukudluliselwa kwe-HIV okubandakanya i-plasma eyayicutshungulwe nge-methylene blue, evela ekunikeleni ngegazi kwango-2005. Lowo mbiko awusuli imiphumela yokunciphisa amandla egciwane okutheleleka elabhorethri; uvimbela ukuyichaza njengesiqinisekiso esisebenza kuzo zonke izimo. Izinhlelo zokucubungula nokuqinisekiswa kokusebenza kwazo kuxoxwa ngakho kumhlahlandlela ohlukile wokunciphisa amagciwane ku-plasma nge-methylene blue.
Lokho okusekelwa iziqondiso zamanje zokwelapha i-HIV
Izincomo ze-NIH zokuqala ukwelashwa ngemishanguzo yokuthithibalisa igciwane, ezibuyekezwe ngoSepthemba 25, 2025, zincoma i-ART kubo bonke abantu abane-HIV nokuyiqala ngokushesha noma ngokushesha ngangokunokwenzeka ngemva kokutholakala kwe-HIV. Izinhloso zihlanganisa ukuthithibaliswa okuqhubekayo kwegciwane, ukunciphisa ukugula nokufa, nokuvimbela ukudluliselwa kwegciwane. Ukukhethwa kokwelashwa nakho kubheka izimo zempilo zalowo muntu.
Abutholakalanga ubufakazi bocwaningo lweziguli obufakazela ukuthi i-methylene blue ethengiswa ezitolo futhi egwinyiwe iyindlela esebenzayo yokwelapha i-HIV emithonjeni ehloliwe yalesi sihloko. Lokhu kuyisitatimende ngobufakazi obutholakele, hhayi isimangalo sokuthi yonke imiphumela yocwaningo olungase lwenziwe esikhathini esizayo isivele inqunyiwe. Amaphepha ocwaningo lwaselabhorethri okuxoxwe ngawo lapha awakwazi ukusekela ukuthatha indawo ye-ART, ukufaka i-methylene blue ukuze kulawulwe i-HIV, noma ukusho ukuthi itholakele indlela yokuyelapha ngokuphelele.
Iziqondiso ze-NIH zokuphazamiseka kokwelashwa ziveza ukwanda kabusha kwegciwane, ukuwohloka kwamasosha omzimba, nokuqhubeka kwesifo njengemiphumela engase ivele. Qhubeka nokwelashwa kwe-HIV okunqunywe udokotela futhi wethule noma yini ohlongoza ukuyengeza eqenjini elikunakekelayo nge-HIV ukuze ihlolwe.
Indlela yokuhlola isimangalo sokwelapha
Cela ucwaningo uqobo, bese uhlonza izinto ezine: ubani noma yini eyacwaningwa, yini eyanikezwa, yanikezwa kanjani, nokuthi yini eyashintsha. “I-plasma yabantu” ichaza umsuka wesampula; akusho ngaso sonke isikhathi ukuthi kwenziwa ucwaningo lokwelapha abantu. “Iziguli ezine-HIV” ichaza ababambiqhaza; akusho ngaso sonke isikhathi ukuthi i-HIV yayiyisifo esaselashwa.
Sebenzisa uhlu lokuhlola inqubo yokusebenzisa i-methylene blue oluku-inthanethi ukuze uhlole imithombo ecashuniwe eyesekelayo. Ukuze uxoxe nochwepheshe wezempilo, phatha ilebula yomkhiqizo nesixhumanisi socwaningo lapho uya esikhathini sakho sokubonana naye, usebenzise le mibuzo ongayibuza uchwepheshe wezempilo nge-methylene blue. Umbuzo obalulekile ukuthi ubufakazi buyayisekela yini leyo ndlela ethile yokwelapha ukuze kufinyelelwe kulowo mphumela othile esigulini.