IMethylene blue yezinja: ukusetyenziswa, ukhuseleko, nexesha lokufowunela ugqirha wezilwanyana

Inja isela amanzi aluhlaza okwesibhakabhaka kwi-akwariyam esandul’ ukufakwa unyango. Umnini ufunda ukuba i-methylene blue ibuyisela imeko yegazi kwesiqhelo aze azibuze ukuba ithontsi eliphuma kwibhotile yonyango lweentlanzi lingayinceda na inja egulayo ekhaya. Zombini ezi meko zibandakanya idayi enye. Akukho nanye efanele ukuba sisigqibo sonyango lwasekhaya.

Ukubhideka kubangelwa kukuxuba iingcamango ezimbini ezinegama elifanayo. Enye yinkqubo yasekliniki: ugqirha wezilwanyana unika idosi elinganisiweyo ngomthambo ngenxa yemeko ethile engxamisekileyo yegazi aze alibeke esweni igazi kangangeentsuku. Enye kukuchanabeka: inja iginye umlinganiselo ongaziwayo wedayi etankini, kulwelo lokudipha iintlanzi, okanye kwipilisi. Eyokuqala ifanele ukwenziwa esibhedlele. Eyesibini ifuna ukufowunela ugqirha wezilwanyana. Eli nqaku liyazahlula ezi meko, lichaza ukuba kutheni kungekho tshathi ikhuselekileyo yedosi yezinja yasekhaya, lize linike itheyibhile onokuya nayo ekliniki.

Oko oogqirha bezilwanyana bayisebenzisela kona ngokwenene

Ukusetyenziswa kwayo okuqinisekisiweyo ezinjeni kulinganiselwe: yi-methemoglobinemia ebangelwe sisixhobo esibangela i-oxidation, enzima ngokwaneleyo ukuba ifune unyango. I-hemoglobin eqhelekileyo ithwala ioksijini kuba iayini yayo ikwimo ye-ferrous, encitshiswe ngokwamkela ii-elektroni. Iikhemikhali ezibangela i-oxidation ziguqula loo ayini ibe kwimo ye-ferric, zenze i-methemoglobin, engakwaziyo ukuthwala ioksijini. Iintsini zenja zinokubonakala ziluhlaza okwesibhakabhaka okanye zingwevu ngoxa igazi lona lijika libe mdaka njengetshokolethi.

Ngaphakathi kwiseli ebomvu yegazi, i-methylene blue inokuncitshiswa ngokwamkela ii-elektroni ibe yi-leucomethylene blue, ebuyisela ii-elektroni kwiayini eye yafumana i-oxidation, ize ibuyisele i-hemoglobin esebenzayo. Leyo yindlela esebenza ngayo kunyango. Icacisa ukuba kutheni eli chiza linceda kuphela xa ingxaki iyi-methemoglobin egqithisileyo. Alincedi kwi-anemia eqhelekileyo, ekunqongophaleni kweoksijini okubangelwa sisifo semiphunga, okanye kwityhefu engabandakanyi i-methemoglobin.

Izinto ezidla ngokuyibangela ezinjeni ziquka i-acetaminophen, i-nitrate okanye i-nitrite, i-benzocaine namachiza anxulumene nayo abangela i-oxidation, kwaye ngamanye amaxesha umonakalo we-oxidation onxulumene netswele okanye ikonofile. Kwi-acetaminophen, unyango oluphambili kukususa into eyityhefu kunye nokunika i-N-acetylcysteine, ibe i-methylene blue lunyango olongezelelweyo xa i-methemoglobin iyingxaki ebalulekileyo, njengoko kuchazwe kwisikhokelo se-Merck ngobutyhefu bamachiza okuthomalalisa iintlungu. Kwitswele nakwigalikhi, unyango oluqhelekileyo kukususa into eyityhefu, ukunika ioksijini, ukuxhasa ngokutofelwa igazi, nokunika ulwelo, kuba umonakalo ophambili kukutshatyalaliswa kweeseli ezibomvu zegazi okunxulumene nemizimba ye-Heinz, okuvela emva kweentsuku, kungekhona i-methemoglobin kuphela. Ukusebenzisa kwinja inkqubo yonyango lwe-nitrate eyenzelwe izilwanyana ezetyisayo kungaba yingozi, kuba iinkomo ziyazinyamezela iidosi ezonzakalisa izinja, njengoko uncwadi lwezilwanyana olungonitrate lucacisa.

Ezinye iindlela ezimbini zokusetyenziswa kufuneka zichazwe ngokucacileyo. Ukutofa kufutshane nethumba ukuze kuboniswe indawo yendlala yokuqala ye-lymph eyamkela ulwelo oluvela kwelo thumba kukusetyenziswa kwedayi kwinkqubo yonyango lomhlaza ezinjeni, kungekhona unyango lomzimba wonke. Ukusetyenziswa kovavanyo kumothuko obangelwa kukusasazeka okungafanelekanga kwegazi okanye kukulahleka kokuqina kwemithambo, apho idayi inikwa ukuze inciphise imiqondiso ye-nitric oxide, kusaphandwa ezinjeni. Uphononongo lwe-2026 lwezinja olusebenzisa ukudluliselwa kwegazi ngendlela edlula intliziyo nemiphunga luchaza ngokucacileyo ukuba abukho ubungqina bekliniki kunyango lwezilwanyana bokuyisebenzisa kolo hlobo lomothuko, kwaye iidosi eziphezulu kwiimodeli zovavanyo zalwenza lwaba mandundu uxinzelelo lwegazi nokusebenza kwentliziyo. Ngoko isishwankathelo esinyanisekileyo kukuba kukho indima enye eqinisekisiweyo yonyango, enye yokusebenzisa idayi kwinkqubo yekliniki, kanti ezinye zisekuvavanyweni. Imiyalelo ye-akwariyam, iinkqubo zonyango zabantu, kunye nokusetyenziswa kwedayi ekufakeni umbala elabhoratri azinakusetyenziswa endaweni yazo.

Kutheni kungekho tshathi yedosi yasekhaya

Iziphumo zokukhangela zithembisa itshathi yedosi ye-methylene blue yezinja. Kweli chiza, itshathi ingaba sisixhobo esingafanelekanga, kuba umahluko phakathi kwedosi ekhuselekileyo neyingozi mncinci, ukubeka esweni kuyinxalenye yonyango, kwaye inani lodwa alenzi isigqibo sikhuseleke.

Imithombo epapashiweyo yonyango lwezilwanyana idla ngokukhankanya i-1 ukuya kwi-1.5 mg nge-kg, enikwa ngomthambo, ngokucothayo, njengesisombululo sepesenti enye, kube kanye, ngenxa ye-methemoglobinemia. Inqaku le-Merck ngobutyhefu bamachiza okuthomalalisa iintlungu lidwelisa loo mda wedosi, inikwa kwimizuzu eliqela. Uncwadi oluchaza eli chiza kunyango lwezilwanyana luchaza idosi enye enikwa ngokucothayo, kulandelwa ukubekwa esweni kwegazi kangangeentsuku ezintathu ukuya kwezine, kwaye luxela i-anemia enzima ngokwaneleyo ukuba ifune ukutofelwa igazi kwidosi emalunga ne-5 mg nge-kg. Idosi yokufaka umbala kutyando ngendlela yee-1970s, emalunga ne-3 mg nge-kg, yabangela i-anemia eyavela kamva, kwaye kwimeko enye yabangela umonakalo obulalayo wezintso emva kokutshatyalaliswa kweeseli ezibomvu zegazi. Umahluko phakathi kokunceda nokwenzakalisa mncinci.

Elo nani likwaphendula imibuzo embalwa kunokuba kubonakala. Alitsho ukuba i-methemoglobin ikhona ngokwenene na, ukuba unobangela uyaphendula na kweli chiza, ukuba ngawaphi amanye amayeza athathwa yinja, okanye ukuba izintso neeseli ezibomvu zegazi zingakwazi na ukunyamezela into ebangela i-oxidation. Itshathi ayinakulinganisa i-methemoglobin nge-co-oximetry, ayinakujonga isampulu yegazi eqatywe kwisilayidi ukuba inemizimba ye-Heinz na, kwaye ayinakubeka esweni ukuhla kwe-hematocrit emva kweentsuku ezintathu. Ikliniki ingakwenza oko. Yiyo loo nto le theyibhile ingezantsi idwelisa imida yedosi njengolwazi lwekliniki lokuxoxa nogqirha wezilwanyana, kungekhona imiyalelo. Musa ukunika i-methylene blue ekhaya, musa ukuguqula unyango lwe-akwariyam lube yidosi yenja, kwaye musa ukusebenzisa ileyibhile yabantu efana nolwazi lokumiselwa kwe-PROVAYBLUE njengesikhokelo sedosi.

Ukuphikisana: iyeza lokulwa ityhefu nento ebangela i-oxidation ngaxeshanye

Cinga nge-methylene blue njengeengcamango ezimbini kwibhotile enye. Xa inikwa ngomlinganiselo omncinci, ngokucothayo, phantsi kweliso lengcali, neenkqubo ze-reductase zisebenza, inceda ekubuyiseleni ii-elektroni ize inciphise i-methemoglobin. Xa umlinganiselo uphezulu, okanye xa iindlela zokukhusela iiseli ezibomvu zegazi zingasakwazi ukumelana nayo, isebenza njengento ebangela i-oxidation ize yenze umonakalo ebifanele ukuwulungisa: i-methemoglobin engakumbi, imizimba ye-Heinz, umonakalo kwiinwebu zeeseli, nokutshatyalaliswa kweeseli ezibomvu zegazi.

Oku kuphikisana kuxhomekeke kwidosi, kwaye iziphumo zinokulibaziseka. I-anemia inokuvela kwiintsuku ezintathu ukuya kwezine emva kwedosi, nto leyo ebangela ukuba imithombo inyanzelise uvavanyo lwegazi lokulandelela nokuba inja ibonakala iphucukile kwisiqingatha seyure. Ukutshatyalaliswa okukhulu kweeseli ezibomvu zegazi kunokukhupha i-hemoglobin iye kwiplasma nasemchameni kuze konakalise izintso. Kuphononongo lwezinja, iidosi eziphezulu ezinikwe ngomthambo zanyusa i-methemoglobin kwisithuba somzuzu kunokuba ziyinciphise.

Iintlobo ezimbini zokusebenzisana zifuna ingqalelo ekhethekileyo. IMethylene blue sisithinteli esinamandla se-monoamine oxidase, nesiphumo saso esinokubuyela umva. Ileyibhile yabantu inesilumkiso esikwibhokisi malunga nesindromu ye-serotonin xa idityaniswe namachiza achaphazela i-serotonin. Kwinja, imbali efanelekileyo iquka i-trazodone, i-fluoxetine nezinye izithinteli zokuphinda kufunxwe i-serotonin, i-clomipramine, i-selegiline, namachiza afana ne-tramadol. Iimpawu ziquka ukuphazamiseka okanye utshintsho kwimo yengqondo, iqondo lobushushu eliphezulu, ukubetha kwentliziyo ngokukhawuleza okanye uxinzelelo lwegazi olungazinzanga, ukungcangcazela, ukuqina kwemisipha, ukungahambelani kweentshukumo, nokuxhuzula. Isilumkiso esinamandla sisekelwe ikakhulu kubungqina babantu, ngoko izinga lokuvela kwayo ezinjeni alikalinganiswa kakuhle, kodwa imbali yamayeza kufuneka ibandakanywe kuyo yonke iminxeba yokuhlola ungxamiseko.

Uhlobo lwesilwanyana nalo lubalulekile. Izinja zinokuba ne-anemia enemizimba ye-Heinz ngenxa yeli chiza, kodwa iikati zisengozini enkulu kakhulu kuba i-hemoglobin yazo inamaqela amaninzi anokufumana i-oxidation, kwaye iiseli zazo ezibomvu zegazi aziwususi kakuhle umonakalo. Inkqubo yonyango lwenja mayingaze ilungelelaniswe nekati ngokobunzima bayo. Ummiselo karhulumente womanyano wase-US, 21 CFR icandelo 500.27, ubhala nge-anemia ebulalayo enemizimba ye-Heinz kwiikati ezanikwa ngomlomo iimveliso ze-methylene blue zomchamo ngokwemiyalelo yeleyibhile. Loo mbali isikhumbuza ukuba ukunikezela ngomlomo akuthethi ngokuzenzekelayo ukuba iyeza aliyi kuba nobungozi.

Itheyibhile yokusetyenziswa ekliniki nokuchanabeka

Yiza nale theyibhile kugqirha wezilwanyana kunokuba wenze ngokwayo. Yahlula ukusetyenziswa ekliniki phantsi kweliso lengcali ekuchanabekeni ngengozi, mahluko lowo ogcina izigqibo zikhuselekile. Yiphonononge kunye nekliniki; ayithathi indawo yoxilongo.

Imeko	Yintoni	Oko ugqirha wezilwanyana akuqwalaselayo
I-methemoglobinemia enzima ebangelwe yinto eyenza i-oxidation	Imeko eqinisekisiweyo yokusetyenziswa ekliniki. I-methemoglobin elinganisiweyo, inja eneempawu, nonobangela owaziwayo we-oxidation.	Idosi enye ecothayo ngomthambo emalunga ne-1 ukuya kwi-1.5 mg nge-kg yesisombululo sepesenti enye, kube kanye, kunye ne-co-oximetry nokubekwa esweni kwe-hematocrit nesampulu yegazi eqatywe kwisilayidi kangangeentsuku ezi-3 ukuya kwezi-4. Unyango olujoliswe kunobangela luyaqhubeka kunye nayo, umzekelo i-N-acetylcysteine ye-acetaminophen.
Ukunqongophala kwe-reductase okuzuzwe njengelifa	Imeko enqabileyo yokusetyenziswa yingcali. I-methemoglobinemia ephindaphindayo kungekho tyhefu.	Unyango ngomthambo olusekelwe kwimeko nganye, malunga ne-1 mg nge-kg, ngamanye amaxesha lulandelwe luthotho lwamayeza ngomlomo olubekwa esweni. Isicwangciso sexesha elide kuphela phantsi kokhathalelo lwengcali.
Ukubonisa indawo yendlala yokuqala ye-lymph eyamkela ulwelo oluvela kwithumba	Ukusetyenziswa kwedayi kwinkqubo yotyando lwethumba.	Ukutofa kwindawo ejikeleze ithumba ngugqirha wotyando, kungekhona ukunika idosi yomzimba wonke. Iziphumo egazini ngumbuzo owahlukileyo ekuhambeni kwedayi.
Umothuko okanye ukuncipha kokuqina kwemithambo yegazi	Kukuvavanyo ezinjeni. Akukho nkqubo iqhelekileyo yamkelweyo.	Kufuneka kuqwalaselwe ukufakwa kuphando, kungekhona unyango lwasekhaya. Iziphumo kuxinzelelo lwegazi, entliziyweni nasemiphungeni zinokuba mandundu kwiidosi eziphezulu.
Isele amanzi e-akwariyam afakwe unyango	Kukuchanabeka, kungekhona unyango. Axutywe kakhulu kodwa umthamo awaziwa.	Ileyibhile yemveliso, ukuxinana kwemveliso yokuqala, umthamo wetanki, umthamo oqikelelwayo oselekileyo, ubunzima bomzimba, ixesha, iimpawu, nawo onke amayeza. Intwana yamanzi axutywe kakhulu nemveliso exineneyo ziimeko ezahlukileyo.
Ikhothe ulwelo lokudipha iintlanzi okanye ihlafune imveliso exineneyo okanye ipilisi	Ukuchanabeka okubangela inkxalabo engakumbi.	Iinkcukacha ezifanayo zemveliso kunye neemiligram ngeyunithi nenani eliphezulu leeyunithi ezingekhoyo. Ezinye izithako zepilisi zitshintsha uvavanyo.
Inja ethatha i-trazodone, i-SSRI, i-clomipramine, i-selegiline, i-tramadol	Umngcipheko wokusebenzisana kwamachiza owongezelelekileyo kuyo nayiphi na kwezi meko zingentla.	Uluhlu olupheleleyo lwamachiza nezongezelelo ngaphambi kwaso nasiphi na isigqibo. Iimpawu zesindromu ye-serotonin zifuna uvavanyo olungxamisekileyo.

Ukuba inja ichanabekile: omawukwenze ngoku

Okokuqala, yithintele ekuseleni ngakumbi uze ugcine ubungqina: ibhotile yemveliso okanye ifoto yeleyibhile, ukuxinana kwayo, ukuba kufakwe kangakanani kowuphi umthamo wamanzi ukuba ibiyitanki, umlinganiselo oqikelelwayo oginyiweyo, ixesha, ubunzima benja, iimpawu zangoku, izifo ezaziwayo, nalo lonke iyeza nesongezelelo. Ukuhlolwa kongxamiseko lwetyhefu kuxhomekeke kanye kolo luhlu. Isikhokelo esiqhelekileyo se-ASPCA ngetyhefu kwizilwanyana zasekhaya sicela abanini bagcine isikhongozeli baze bafowune kunokuba balinde iimpawu, kwaye inkonzo ye-ASPCA yokulawula ityhefu neenkonzo ezifana ne-Pet Poison Helpline zikhona ukuze zifumane lo mnxeba, kunye nekliniki eqhelekileyo okanye isibhedlele songxamiseko.

Musa ukunika i-methylene blue njengeyeza lasekhaya lokulwa ityhefu. Musa ukwenza inja igabhe ngaphandle kokuba ugqirha wezilwanyana okanye ingcali yetyhefu iyalela oko ngokucacileyo, kuba ukugabha akufanelekanga okanye kuyingozi kwezinye iimeko zokuchanabeka naxa kukho ezinye iimpawu. Musa ukunika i-hydrogen peroxide ngokuzithathela isigqibo. Xa kunokwenzeka, thintela ukuba inja ikhothe idayi eseboyeni bayo xa izicoca, hlamba idayi eseluswini njengoko ikliniki icebisa, uze ugcine imveliso ikude namehlo.

Funa uvavanyo olungxamisekileyo ngokukhawuleza xa kukho ukuphefumla nzima, iintsini eziluhlaza okwesibhakabhaka okanye ezingwevu, ubuthathaka obukhulu okanye ukuwa, ukungabikho zingqondweni, ukuxhuzula, ukuphazamiseka okukhulu okanye ukungcangcazela kunye neqondo lobushushu eliphezulu, okanye iintsini eziluthuthu okanye ezityheli kunye nomchamo omnyama okanye obomvu-mdaka. Qaphela ukulibaziseka: inja ebonakala iphilile ngokuhlwa kosuku echanabeke ngalo isenokuba ne-anemia ebangelwa kukutshatyalaliswa kweeseli ezibomvu zegazi emva kweentsuku, ngoko ukuhlolwa kongxamiseko kubandakanya ubusuku novavanyo lwegazi lokulandelela. Uphononongo lokulawulwa kwe-methemoglobinemia ebukhali kwi-Journal of Veterinary Internal Medicine lucebisa ukuhlolwa kwe-hematocrit kangangeentsuku eliqela emva kwezigqibo zonyango ngenxa yesi sizathu kanye.

Umda wokugqibela ugcina onke amanye amaphepha ale sayithi kwindawo yawo efanelekileyo. Izikhokelo zonyango lweentlanzi, amanyathelo okususa idayi emanzini emva kokunika idosi kwi-akwariyam, ikhemistri yedayi, neenkqubo zokufaka umbala zichaza iitanki, izixhobo zeglasi, neemayikhroskopu. Akukho nanye kuzo engumyalelo wonyango lwenja. Umbuzo ngenja usoloko uphela ngendlela efanayo: fowunela ugqirha wezilwanyana, yiza neleyibhile namanani, uze uvumele iziphumo zovavanyo lwegazi zigqibe.