Isihloko
Izithasiselo ze-methylene blue: ubufakazi, amalebula, nesimo sokulawulwa
“Isithasiselo se-methylene blue” sichaza indlela umkhiqizo okhangiswa ngayo. Lokho kukodwa akuvezi isigaba sawo esingokomthetho, injongo egunyaziwe, noma izinzuzo zawo ezifakazelwe ngokocwaningo lwezokwelapha. Igama elifanayo lekhemikhali liyavela emithini edinga incwadi kadokotela, emikhiqizweni ethengiswa ukuze iphuzwe, kuma-reagent aselabhorethri, nasemikhiqizweni yamathangi ezinhlanzi.
Ngakho impendulo yombuzo othi “Ingabe i-methylene blue igunyazwe yi-FDA?” incike emkhiqizweni othile. I-ProvayBlue iwumuthi ogunyaziwe ofakwa emthanjeni wokwelapha i-methemoglobinemia etholwe kamuva. Ukugunyazwa kwayo akudluleli emaconsini noma kuma-capsule omunye umkhiqizi akhangiselwa ukukhumbula noma ukuphila isikhathi eside. Ngakolunye uhlangothi, ukusho ukuthi yonke i-methylene blue ephuzwayo ayigunyaziwe emhlabeni wonke nakho akulungile: i-EU inomuthi ophuzwayo ogunyaziwe wokuxilonga, kanti iCanada inerekhodi lomuthi ophuzwayo ongadingi incwadi kadokotela.
Qala ngencazelo ephelele yomkhiqizo
Incazelo ewusizo ihlanganisa umkhiqizi, igama eliqondile lomkhiqizo, indlela owakhiwe ngayo, ukugxila kwawo, indlela yokuwusebenzisa, izwe, kanye nokusetshenziswa okushiwo. “I-methylene blue, USP” iphendula ingxenye kuphela yaleyo ncazelo.
Umehluko kulezi zinto ezintathu uvimbela amaphutha avamile:
- Indlela umkhiqizo owakhiwe ngayo: ikhambi elijovwayo, ithebhulethi emboziwe, noketshezi oluvamile kungaba nento efanayo kodwa kuyilethe emzimbeni ngezindlela ezahlukene.
- Ukusetshenziswa okuhlosiwe: ukulungisa i-methemoglobinemia, ukufaka umbala emathunjini amakhulu ngesikhathi sokuhlolwa, nokuthuthukisa ukugxila kwansuku zonke kuyizimangalo ezahlukene ezidinga ubufakazi obuhlukene.
- Isigaba sokulawulwa: umuthi odinga incwadi kadokotela, umuthi ongadingi incwadi kadokotela, isithasiselo sokudla, kanye ne-reagent yaselabhorethri akuzona izincazelo ezingashintshaniswa.
Imihlahlandlela yamaswidi athambile e-methylene blue kanye nama-capsule namathebhulethi e-methylene blue ichaza umehluko wezinhlobo zemikhiqizo. Uhlobo olulula ukulusebenzisa alufakazeli ukuthi ukusetshenziswa kwalo kugunyaziwe.
Ithebula lemikhiqizo nezindawo zokulawulwa
Amarekhodi ahlolwe ngomhlaka 12 Septhemba 2026. Leli thebula liqhathanisa imikhiqizo noma izigaba ezithile. Aliyona irejista ephelele, isinqumo ngabo bonke abathengisi, noma imvume yokungenisa umkhiqizo ozowusebenzisa wena. Amarekhodi eziphathimandla nemibhalo yemikhiqizo exhunywe ngezixhumanisi inikeza isisekelo somugqa ngamunye.
| Izwe noma imakethe | Umkhiqizo noma indlela owakhiwe ngayo nendlela yokuwusebenzisa | Ukusetshenziswa okuhlosiwe okuvezwa yirekhodi elicashuniwe | Isiphathimandla nomehluko wesimo |
|---|---|---|---|
| I-United States | I-ProvayBlue, umjovo we-methylene blue, ofakwa emthanjeni | I-methemoglobinemia etholwe kamuva ezigulini eziyizingane nezindala | Umuthi ogunyazwe yi-FDA; ulwazi lwamanje lokunquma umuthi lukhomba lo mkhiqizo nokusetshenziswa kwawo okwelaphayo. |
| I-United States | Amaconsi noma ama-capsule aphuzwayo athengiswa njengezithasiselo | Izimangalo zempilo nenhlalakahle ezincike kumthengisi | Imithetho ye-FDA yezithasiselo ayinikezi izithasiselo ukugunyazwa ngaphambi kokungena emakethe; ukuhlukaniswa kwazo nezimangalo kudinga ukuhlolwa ngokwehlukana. |
| I-United Kingdom | I-Proveblue 5 mg/mL, ikhambi lokujova, elifakwa emthanjeni | I-methaemoglobinaemia ebukhali enezimpawu, ebangelwa umuthi noma ikhemikhali | Umuthi odinga incwadi kadokotela kuphela, PLGB 40051/0002, olwazini lwase-UK lokunquma umuthi. |
| I-European Union | Amathebhulethi e-Lumeblue 25 mg akhipha umuthi isikhathi eside, aphuzwayo | Ukuthuthukisa ukubonakala kwezilonda emathunjini amakhulu nasengxenyeni yawo yokugcina ngesikhathi se-colonoscopy yokuhlola noma yokuqapha kubantu abadala | Ukuhlolwa kwe-Lumeblue yi-EMA kuchaza umuthi wokuxilonga ogunyaziwe odinga incwadi kadokotela. |
| ICanada | METHYLENE BLEU LIQ 1%, Laboratoire Atlas, uketshezi oluphuzwayo | Ayikho incazelo ephelele yomkhiqizo ye-elekthronikhi enikeziwe kusizindalwazi; ungaphethi ngokuthi kukhona ukusetshenziswa okugunyaziwe kwempilo nenhlalakahle | Isizindalwazi Semikhiqizo Yezidakamizwa se-Health Canada sibala i-DIN 00050466 njengomkhiqizo osemakethe nongadingi incwadi kadokotela. |
| I-Australia | I-ampoule yomjovo we-Proveblue 50 mg/10 mL | Bheka ulwazi lomkhiqizo ukuze uthole ukusetshenziswa kwawo okugunyaziwe | Irekhodi le-TGA elithi ARTG 224639 likhomba umuthi ojovwayo obhalisiwe. |
| I-Australia | Imikhiqizo ye-methylene blue ephuzwayo engenisiwe nengabhalisiwe | Ukusetshenziswa kokucabanga, kwemizwa, nokulwa nokuguga okukhangiswa ngabathengisi | Iseluleko se-TGA ngemikhiqizo ephuzwayo sithi le mikhiqizo ayikahlolwa ikhwalithi, ukuphepha, noma ukusebenza kwayo. |
I-United States: ukubhalwa kwesithasiselo kulebula akukhona ukugunyazwa komuthi
I-FDA ayizigunyazi izithasiselo zokudla ngaphambi kokuthengiswa kwazo. Incazelo yayo futhi ngokuvamile ayihlanganisi izithako ezake zagunyazwa njengemithi emisha, ngaphandle kwezimo ezithile eziphathelene nokukhangiswa kwazo ngaphambilini njengokudla noma izithasiselo. Umthengisi kufanele aveze isisekelo sokulawulwa esisebenzayo; ukubhala ukuthi “Amaqiniso Ngesithasiselo” akukwazi ukuxazulula lowo mbuzo.
Izimangalo ngezifo zingabonisa ukuthi umkhiqizo uhloselwe ukusebenza njengomuthi ngisho noma ubizwa ngesithasiselo. Encwadini yesixwayiso yango-2020 ephathelene nama-capsule e-methylene blue, i-FDA yaphikisa imikhiqizo eyayikhangiselwa i-COVID-19 njengemithi engagunyaziwe nenamalebula angahambisani nomthetho. Lokho kuyisibonelo sokuphoqelelwa komthetho mayelana nezimangalo ezithile, hhayi isinqumo samanje ngawo wonke umthengisi we-methylene blue.
I-United Kingdom: izimangalo nokusebenza komuthi emzimbeni kubalulekile
Umhlahlandlela we-MHRA ngemikhiqizo esemngceleni wezigaba uchaza ukuthi kokubili indlela umkhiqizo owethulwa ngayo nento esebenzayo kuwo kungathinta ukuthi uyisidakamizwa sokwelapha yini. Ilebula elibiza umkhiqizo ngesithasiselo sokudla alikuchithi lokho kuhlolwa. Ngokufanayo, ilebula yaselabhorethri ayixazululi udaba lwekhasi lokuthengisa eliqondisa abathengi ekusetshenzisweni kokwelapha.
Ukugunyazwa komjovo wase-UK kuqondene nomkhiqizo oqanjwe ngegama. Inombolo yelayisensi yawo igcina isiqalo esithi PLGB: isevisi yemikhiqizo ye-MHRA ichaza ukuthi ukugunyazwa obekukhona eGreat Britain kwaqala ukusebenza kuyo yonke i-UK ngoJanuwari 2025 ngaphandle kokushintsha izinombolo zakho.
I-European Union: ukugunyazwa komkhiqizo ophuzwayo kungaqondana nenjongo ethile yokuxilonga
I-Lumeblue ibonisa ukuthi kungani indlela yokusebenzisa kuphela inganele. Ukumbozwa kwayo nezici zokukhishwa komuthi kusekela ukufakwa kombala olwelwesini lwamathumbu amakhulu nengxenye yawo yokugcina ngesikhathi se-colonoscopy. Lobo bufakazi buphathelene nenqubo yokuxilonga, hhayi ukuthuthukiswa kokucabanga kwansuku zonke. I-capsule ethengiswa ezitolo equkethe i-methylene blue ayizuzi ukugunyazwa kwe-Lumeblue ngenxa yokuthi yomibili iyagwinywa.
ICanada: funda irekhodi eliqondile le-DIN
Irekhodi le-Atlas livimbela isitatimende esihlanganisa konke esithi i-methylene blue ephuzwayo yaseCanada ihlale idinga incwadi kadokotela. Nokho, leli rekhodi alinikezi incazelo ephelele ye-elekthronikhi esekela izimangalo zokukhumbula noma zokuphila isikhathi eside. I-DIN ingeyomkhiqizo womuthi oqanjwe ngegama; ayikwazi ukudluliselwa ebhodleleni lomunye umthengisi. Qinisekisa noma iyiphi i-DIN eshiwo noma inombolo yomkhiqizo wemvelo ngokuqhathanisa nerekhodi elisemthethweni elihambisana nayo, kuhlanganise nenkampani nendlela umkhiqizo owakhiwe ngayo.
I-Australia: ukubhaliswa nokufakwa ezigabeni zokulawulwa kuphendula imibuzo ehlukene
Iseluleko se-TGA sihlukanisa imikhiqizo yomjovo ebhalisiwe nemikhiqizo ephuzwayo engabhalisiwe ekhangiswa ku-inthanethi. Ukuthi into idinga incwadi kadokotela yini kuwumbuzo wokufakwa kwayo ezigabeni zokulawulwa; ukuthi umkhiqizo othile wokwelapha uhloliwe futhi wabhaliswa yini kungomunye umbuzo. Ungahumushi isigaba esinemikhawulo embalwa njengokugunyazwa komkhiqizo ophuzwayo wempilo nenhlalakahle. Ukubonisana kwango-2026 ngokufakwa kwe-methylene blue ezigabeni zokulawulwa kuyinqubo yesiphakamiso, hhayi ushintsho oseluqalile ukusebenza ngokwalo.
Lokho ubufakazi obungakusekela
Kukhona ucwaningo kubantu nge-methylene blue ephuzwayo, kodwa okutholwe ucwaningo nokugunyazwa komkhiqizo kuseyizinto ezihlukene. Ucwaningo olwenziwe ngokwabiwa okungahleliwe, lapho ababambiqhaza nabacwaningi bengazi ukuthi ubani othole ini, kubantu abadala abaphile kahle abangu-26 lwaqhathanisa i-methylene blue ephuzwayo ne-placebo futhi lwahlola i-MRI yokusebenza kobuchopho kanye nemisebenzi yokunaka/yokukhumbula ngaphambi kokunikezwa nangemva kwehora elilodwa. Lwabika ushintsho ekusebenzeni kobuchopho nasekhonweni lokubuyisa izinkumbulo.
Lokho kuhlolwa okuncane kwemiphumela yesikhathi esifushane akufakazeli izinzuzo eziqhubekayo zansuku zonke, ukuvimbela ukuncipha kwekhono lokucabanga, noma ukulingana kwezinhlobo zemikhiqizo ezithengiswa ezitolo. Umthengisi ocaphuna lolu cwaningo kufanele akhombe umkhiqizo owahlolwa, iqembu labantu, isikhathi, kanye nomphumela owalinganiswa. Umhlahlandlela obanzi wezinzuzo nobufakazi be-methylene blue uhlukanisa ukusetshenziswa okufakazelwe nokutholakele okusaqalayo.
Lokho okufakazelwa yi-“USP”
Ukubuka kuqala incazelo ephelele ye-USP ye-methylene blue kuchaza ububanzi bokuhlolwa kwenani elingu-97.0% kuya ku-103.0%, obubalwe ngesisekelo sento eyomisiwe. Lokho kuyisilinganiso esibekiwe sencwadi yamazinga emithi, hhayi ukusetshenziswa okugunyaziwe ngokwezokwelapha. Ukubuka kuqala okutholakala emphakathini akuvezi yonke incazelo ephelele.
“Kwenziwe nge-methylene blue yezinga le-USP” nakho kushiya umbuzo ongokoqobo: yibuphi ubufakazi obuphathelene nomkhiqizo ophelile? Ukuqinisekiswa kobunikazi bento esetshenzisiwe, ukugxila kokugcina, ezinye izithako, nokuhlolwa kweqoqo lomkhiqizo kuyizinto ezihlolwa ngokwehlukana. Sebenzisa incazelo ye-methylene blue yezinga le-USP kanye nesitifiketi sokuhlaziywa kweqoqo lomkhiqizo. Umbala oluhlaza okwesibhakabhaka noma inani eliphakeme ekuhlolweni akufakazeli ukuthi umkhiqizo awunamagciwane. Umhlahlandlela wemijovo ye-methylene blue nokufakwa kwayo emthanjeni uchaza ukuthi kungani izinga lodwa lingakwazi ukufakazela ukufaneleka komkhiqizo ukujovwa.
Yenza ukuhlolwa kwelebula kube usizo olusebenzisekayo
Ngaphambi kokwamukela isimangalo, qhathanisa umkhiqizo uqobo nerekhodi lawo lokulawulwa kanye nobufakazi obuwusekelayo. Bhala indawo elawulayo, indlela yokuwusebenzisa, ukusetshenziswa okuhlosiwe, isihlonzi sokugunyazwa lapho sisebenza khona, nosuku ohlolwe ngalo. Gcina imibhalo yeqoqo lomkhiqizo ihlukene nobufakazi bezinzuzo zezokwelapha.
Mayelana nokusetshenziswa umuntu aziphuzela kona, i-TGA iveza izingozi ezibalulekile ngokwezokwelapha ezihlanganisa ukusebenzisana nemithi ethinta i-serotonin, ukulimala ngesikhathi sokukhulelwa, nokuqhekeka kwamangqamuzana abomvu egazi kubantu abanokuntuleka kwe-G6PD. Lezo zingozi zisabalulekile ngisho noma umthengisi esebenzisa ulimi lwempilo nenhlalakahle. Umhlahlandlela wokuphepha kwe-methylene blue uchaza imibuzo ewusizo yokuhlola ubungozi.
“Ingabe i-methylene blue isemthethweni?” kudinga ukuba kucaciswe isenzo: ukuba nayo, ukuyithengisa, ukuyikhangisela ukwelapha, nokuyingenisa ezweni kuyimibuzo ehlukene. Uma isimo somkhiqizo sesicacile, sebenzisa umhlahlandlela ohlukile wokuthenga i-methylene blue emazweni ahlukahlukene ukuze uhlole izimfuneko zezwe oya kulo nezokungenisa umkhiqizo.