Inqaku
Izongezelelo ze-methylene blue: ubungqina, iilebhile, nesimo solawulo
“Is ongezelelo se-methylene blue” sichaza indlela imveliso ethengiswa ngayo. Loo nkcazelo iyodwa ayiqinisekisi udidi lwayo ngokomthetho, injongo egunyaziselwe yona, okanye iinzuzo zayo zonyango. Igama elinye lale khemikhali liyavela kumayeza afuna umyalelo kagqirha, kwiimveliso ezithathwa ngomlomo ezithengiselwa abathengi, kwizinto ezisetyenziswa kuvavanyo lwaselabhoratri, nakwiimveliso zeetanki zeentlanzi.
Ngoko ke, impendulo yombuzo othi “Ngaba i-methylene blue igunyazisiwe yi-FDA?” ixhomekeke kwimveliso ethile. I-ProvayBlue liyeza eligunyazisiweyo elifakwa emthanjeni lokunyanga i-methemoglobinemia efunyenweyo. Ugunyaziso lwayo alubandakanyi amathontsi okanye iikhapsuli zomnye umenzi ezikhuthazwa ngenjongo yokuphucula inkumbulo okanye yokwandisa ubude bobomi. Kwelinye icala, akuchanekanga ukuthi yonke i-methylene blue ethathwa ngomlomo ayigunyaziswanga naphi na ehlabathini: i-EU ineyeza lokuxilonga eligunyazisiweyo elithathwa ngomlomo, yaye iKhanada inerekhodi leyeza elithathwa ngomlomo elingafuni myalelo kagqirha.
Qala ngenkcazelo epheleleyo yemveliso
Inkcazelo eluncedo ibandakanya umenzi, igama elichanekileyo lemveliso, ukwakheka kwayo, uxinaniso, indlela yokuyifaka emzimbeni, ilizwe, nosetyenziso olufunwa ngamabango ayo. “I-methylene blue, USP” iphendula inxalenye kuphela yaloo nkcazelo.
Umahluko phakathi kwezi zinto zintathu unceda ukuphepha iimpazamo eziqhelekileyo:
- Ukwakheka kwemveliso: isisombululo esitofwayo, ithebhulethi egqunyiweyo, nolwelo oluqhelekileyo zinokuqulatha into enye kodwa ziyingenise emzimbeni ngeendlela ezahlukeneyo.
- Usetyenziso ekujoliswe kulo: ukulungisa i-methemoglobinemia, ukufaka umbala kwikholoni ngexesha lovavanyo, nokuphucula ukukwazi ukugxila mihla le ngamabango ahlukeneyo afuna ubungqina obahlukileyo.
- Udidi lolawulo: iyeza elifuna umyalelo kagqirha, iyeza elingafuni myalelo kagqirha, isongezelelo sokutya, nento esetyenziswa kuvavanyo lwaselabhoratri azizonkcazelo ezinokusetyenziswa endaweni enye kwenye.
Izikhokelo zeelekese ezihlafunwayo ze-methylene blue nezeekhapsuli neethebhulethi ze-methylene blue zichaza umahluko kwiindlela iimveliso ezinikezelwa ngazo. Indlela elula yokusebenzisa imveliso ayiqinisekisi ukuba usetyenziso lwayo lugunyazisiwe.
Itheyibhile yeemveliso nemimandla yolawulo
Iirekhodi zihlolwe ngomhla we-12 Septemba 2026. Le theyibhile ithelekisa iimveliso okanye iindidi ezichaziweyo. Ayiloluhlu olupheleleyo, ayisosigqibo ngomthengisi ngamnye, yaye ayiyomvume yokungenisa imveliso kwilizwe ukuze uyisebenzise ngokwakho. Iirekhodi zamagunya namaxwebhu eemveliso ekunxulunyaniswe nawo asisiseko somqolo ngamnye.
| Ilizwe okanye imarike | Imveliso okanye ukwakheka kwayo nendlela yokuyifaka emzimbeni | Usetyenziso ekujoliswe kulo oluqinisekiswa yirekhodi ekhankanyiweyo | Igunya nomahluko wesimo |
|---|---|---|---|
| EUnited States | ProvayBlue, isitofu se-methylene blue, esifakwa emthanjeni | I-methemoglobinemia efunyenweyo kwizigulana ezingabantwana nezikhulileyo | Iyeza eligunyaziswe yi-FDA; ulwazi lwangoku lokumisela iyeza luchaza le mveliso nemeko evunyelwe ukuba isetyenziselwe yona. |
| EUnited States | Amathontsi okanye iikhapsuli ezithathwa ngomlomo ezithengiselwa abathengi njengezongezelelo | Amabango empilo-ntle axhomekeke kumthengisi | Imithetho ye-FDA yezongezelelo ayiniki izongezelelo ugunyaziso phambi kokuthengiswa; udidi lwazo namabango azo afuna uhlolo olwahlukileyo. |
| EUnited Kingdom | Proveblue 5 mg/mL, isisombululo sokutofa esifakwa emthanjeni | I-methaemoglobinaemia ebukhali eneempawu, ebangelwa ngamayeza okanye ziikhemikhali | Iyeza elifuna umyalelo kagqirha kuphela, PLGB 40051/0002, ngokweenkcukacha zase-UK zokumisela iyeza. |
| KwiManyano yaseYurophu | Lumeblue 25 mg, iithebhulethi ezikhupha iyeza ixesha elide, ezithathwa ngomlomo | Ukuphucula ukubonakala kwezilonda zekholoni nomngxuma welindle ngexesha le-colonoscopy yokuhlola okanye yokubeka iliso kubantu abadala | Uhlolo lwe-EMA lwe-Lumeblue luchaza iyeza lokuxilonga eligunyazisiweyo elifuna umyalelo kagqirha. |
| EKhanada | METHYLENE BLEU LIQ 1%, Laboratoire Atlas, ulwelo oluthathwa ngomlomo | Akukho xwebhu leenkcukacha zemveliso linikezelweyo nge-elektroniki kuvimba wedatha; musa ukugqiba ukuba igunyaziselwe impilo-ntle | Uvimba weDatha yeeMveliso zaMayeza we-Health Canada udwelisa i-DIN 00050466 njengeyemveliso ethengiswayo nengafuni myalelo kagqirha. |
| EOstreliya | Proveblue 50 mg/10 mL, i-ampoule yesitofu | Jonga ulwazi lwemveliso ukuze ufumane usetyenziso egunyaziselwe lona | Irekhodi le-TGA i-ARTG 224639 lichaza iyeza elitofwayo elibhalisiweyo. |
| EOstreliya | Iimveliso ze-methylene blue ezithathwa ngomlomo ezingeniswe zivela kwamanye amazwe nezingabhaliswanga | Usetyenziso lokuphucula ukusebenza kwengqondo, imo yeemvakalelo, nokuchasa ukwaluphala olukhuthazwa ngabathengisi | Isilumkiso se-TGA ngeemveliso ezithathwa ngomlomo sithi ezi mveliso azihlolwanga ngokomgangatho, ukhuseleko, okanye ukusebenza kwazo. |
EUnited States: ukuleyibhelisha njengesongezelelo asikogunyaziso lweyeza
I-FDA ayigunyazisi izongezelelo zokutya ngaphambi kokuba zithengiswe. Inkcazelo yayo ikwazishiya ngaphandle, ngokubanzi, izithako ezazigunyaziswe ngaphambili njengamayeza amatsha, ngaphandle kweemeko ezithile ezibandakanya ukuthengiswa kwazo ngaphambili njengokutya okanye njengezongezelelo. Umthengisi kufuneka aqinisekise isiseko solawulo esisebenzayo; ukuprinta “Supplement Facts” akunako ukuwusombulula loo mba.
Amabango ngezifo anokubonisa ukuba imveliso ijoliswe ekusetyenzisweni njengeyeza nokuba ibizwa ngokuba sisongezelelo. Kwileta yesilumkiso ka-2020 malunga neekhapsuli ze-methylene blue, i-FDA yachasa iimveliso ezazikhuthazwa ukuba zisetyenziselwe i-COVID-19, izichaza njengamayeza angagunyaziswanga naneelebhile ezilahlekisayo. Lowo ngumzekelo wokunyanzeliswa kwemithetho ngokuchasene namabango athile, hayi isigqibo sangoku ngomthengisi ngamnye we-methylene blue.
EUnited Kingdom: amabango nendlela into esebenza ngayo emzimbeni zibalulekile
Isikhokelo se-MHRA ngeemveliso ezikumda phakathi kweendidi zolawulo sichaza ukuba zombini indlela imveliso echazwa ngayo nesithako esisebenzayo zinokuchaphazela ukuba ithathwa njengeyeza na. Ilebhile ebiza imveliso ngokuba sisongezelelo sokutya ayilutshitshisi olo hlolo. Ngokunjalo, ilebhile ethi imveliso yeyaselabhoratri ayisombululi ingxaki yephepha lokuthengisa elikhokelela abathengi ekuyisebenziseni njengonyango.
Ugunyaziso lwesitofu sase-UK lubhekisa kwimveliso echazwe ngegama. Inombolo yelayisenisi yaso igcina isimaphambili esithi PLGB: inkonzo yeemveliso ye-MHRA ichaza ukuba ugunyaziso olwalusele lukhona eGreat Britain lwaqala ukusebenza kuyo yonke i-UK ngoJanuwari 2025 ngaphandle kokutshintsha iinombolo zalo.
KwiManyano yaseYurophu: ugunyaziso lwemveliso ethathwa ngomlomo lunokuba lolwenjongo ethile yokuxilonga
I-Lumeblue ibonisa ukuba kutheni indlela yokufaka imveliso emzimbeni iyodwa inganelanga. Isigqubuthelo sayo neempawu zokukhupha iyeza zinceda ekufakeni umbala kumaleko ongaphakathi wekholoni nomngxuma welindle ngexesha le-colonoscopy. Obo bungqina bubhekisa kwinkqubo yokuxilonga, hayi ekuphuculeni ukusebenza kwengqondo mihla le. Ikhapsuli ethengiselwa abathengi equlethe i-methylene blue ayifumani ugunyaziso lwe-Lumeblue ngenxa nje yokuba zombini ziyaginywa.
EKhanada: funda irekhodi elichanekileyo le-DIN
Irekhodi le-Atlas lithintela ingxelo ebanzi ethi i-methylene blue ethathwa ngomlomo eKhanada isoloko ifuna umyalelo kagqirha. Noko ke, elo rekhodi aliniki xwebhu leenkcukacha nge-elektroniki eliqinisekisa amabango enkumbulo okanye obude bobomi. I-DIN yeyemveliso yeyeza echazwe ngegama; ayinakudluliselwa kwibhotile yomnye umthengisi. Qinisekisa nayiphi na i-DIN okanye inombolo yemveliso yendalo ekuthiwa yeyemveliso ngokuyithelekisa nerekhodi elisemthethweni elihambelana nayo, kuquka inkampani nokwakheka kwemveliso.
EOstreliya: ukubhaliswa nokuhlelwa ngokwemiqathango yokufumaneka kuphendula imibuzo eyahlukileyo
Isilumkiso se-TGA sahlula iimveliso zezitofu ezibhalisiweyo kwiimveliso ezithathwa ngomlomo ezingabhaliswanga nezithengiswa kwi-intanethi. Ukuba into ifuna umyalelo kagqirha na ngumbuzo wokuhlelwa kwayo ngokwemiqathango yokufumaneka; ukuba imveliso ethile yonyango ihloliwe yaza yabhaliswa na ngomnye umbuzo. Musa ukutolika udidi olunemiqathango embalwa njengogunyaziso lwemveliso yempilo-ntle ethathwa ngomlomo. Ukubonisana ngokuhlelwa kwe-methylene blue ngo-2026 yinkqubo yesindululo, ayilotshintsho esele luqalisiwe ukusebenza.
Oko ubungqina bunokukuxhasa
Lukhona uphando olwenziwe ebantwini nge-methylene blue ethathwa ngomlomo, kodwa iziphumo zophando nogunyaziso lwemveliso zisahlala zizinto ezahlukeneyo. Ulingo kubantu abadala abasempilweni abangama-26, ababelwe kumaqela ngokungakhethiyo, apho abathathi-nxaxheba nabaphandi babengazi ukuba ngubani ofumana ntoni lwathelekisa i-methylene blue ethathwa ngomlomo ne-placebo, lwaza lwavavanya i-MRI yokusebenza kwengqondo nemisebenzi yokuqwalasela neyenkumbulo ngaphambi kokunikwa kwayo nangeyure enye emva koko. Lwaxela utshintsho ekusebenzeni kwengqondo nasekukwazini ukubuyisa iinkumbulo.
Olo vavanyo luncinci lwexesha elifutshane aluqinisekisi iinzuzo zemihla ngemihla ezihlala ixesha elide, ukuthintelwa kokwehla kokusebenza kwengqondo, okanye ukulingana kweemveliso ezithengiselwa abathengi. Umthengisi olucaphulayo kufuneka achaze imveliso evavanyiweyo, iqela labantu abavavanyiweyo, ixesha lovavanyo, nesiphumo esasilinganiswa. Isikhokelo esibanzi seenzuzo ze-methylene blue nobungqina bazo sahlula usetyenziso oluqinisekisiweyo kwiziphumo zokuqala zophando.
Oko kuqinisekiswa ngu-“USP”
Umboniso wangaphambili woxwebhu lwe-USP oluchaza i-methylene blue ubeka uluhlu lomlinganiselo wovavanyo ukusuka kwi-97.0% ukuya kwi-103.0%, olubalwa ngokusekelwe kwizinto ezomisiweyo. Lowo ngumlinganiselo obekwe yincwadi yemigangatho yamayeza, hayi usetyenziso lonyango olugunyazisiweyo. Umboniso wangaphambili ofumaneka esidlangalaleni awubonisi uxwebhu olupheleleyo.
“Yenziwe nge-methylene blue yodidi lwe-USP” nayo ishiya umbuzo osebenzayo: bubuphi ubungqina obubhekisa kwimveliso egqityiweyo? Ukuqinisekiswa kwesithako sokuqala, uxinaniso lokugqibela, ezinye izithako, nokuvavanywa kwebhetshi zizinto ezihlolwa ngokwahlukeneyo. Sebenzisa inkcazelo ye-methylene blue yodidi lwe-USP kunye nesatifikethi sohlalutyo lwebhetshi. Umbala oluhlaza okwesibhakabhaka nomlinganiselo ophezulu wovavanyo aziqinisekisi ukuba imveliso ayinazintsholongwane. Isikhokelo sezitofu ze-methylene blue nokufakwa kwayo emthanjeni ngedriphu sichaza ukuba kutheni udidi lomgangatho lulodwa lungenakuqinisekisa ukufaneleka kwayo ukutofwa.
Yenza uhlolo lwelebhile lukhokelele kumanyathelo acacileyo
Ngaphambi kokwamkela ibango, qinisekisa ukuba eyona mveliso ihambelana nerekhodi layo lolawulo nobungqina obulixhasayo. Bhala phantsi ummandla wolawulo, indlela yokuyifaka emzimbeni, usetyenziso ekujoliswe kulo, isazisi sogunyaziso apho sikhona, nomhla wokuhlola. Gcina amaxwebhu ebhetshi ngokwahlukileyo kubungqina beenzuzo zonyango.
Xa ithathwa ngomlomo ukuze umntu ayisebenzise ngokwakhe, i-TGA ichaza imingcipheko ebalulekileyo kwezonyango, kuquka ukusebenzisana namayeza achaphazela i-serotonin, ukwenzakala ngexesha lokukhulelwa, nokonakala kweeseli ezibomvu zegazi kubantu abanokunqongophala kwe-G6PD. Loo mingcipheko isasebenza nokuba umthengisi usebenzisa ulwimi lwempilo-ntle. Isikhokelo sokhuseleko lwe-methylene blue sichaza imibuzo eluncedo yokuhlola imingcipheko.
“Ngaba i-methylene blue isemthethweni?” ifuna ukuba kuchazwe isenzo esithile: ukuba nayo, ukuyithengisa, ukuyikhuthaza njengonyango, nokuyingenisa kwilizwe yimibuzo eyahlukileyo. Xa isimo semveliso sicacile, sebenzisa isikhokelo esahlukileyo sokuthenga i-methylene blue kumazwe ngamazwe ukuze uhlole indawo eya kuyo nemiqathango yokuyingenisa kwilizwe.