Uyazi nge-GM1 Gangliosidosis? Ake sixoxe ngalesi sifo esingavamile!

Wake wezwa ngesimo esibizwa ngokuthi i-GM1 gangliosidosis? Mhlawumbe akunjalo. Ngoba kuyisimo esingavamile, asithinti wonke umuntu. Kodwa kubalulekile ukuqaphela lezi zimo. Kalula nje, lesi sifo sibangela izinhlayiya ezithile emizimbeni yethu, ikakhulukazi amangqamuzana ezinzwa, ukuba ziqoqeke futhi zilimaze ubuchopho kanye nomgogodla. Lokhu kuwumonakalo ongenakuguqulwa.

Kuyini i-GM1 gangliosidosis?

Kulungile, ake singene emininingwaneni ethe xaxa. I-GM1 gangliosidosis iyisifo esingavamile esibangelwa izakhi zofuzo . Ibangela ukuthi ama-molecule athile emizimbeni yethu, ikakhulukazi amafutha noshukela, akheke ngaphakathi kwamangqamuzana ezinzwa ebuchosheni nasemgogodleni. Lokhu kwakheka kwenzeka ngoba umzimba awukhiqizi i-enzyme ekhethekile esiza ekubhidlizeni la ma-molecule. Lapho la ma-molecule ekhula, amangqamuzana ezinzwa ayalimala futhi alahlekelwe umsebenzi wawo.

Lesi sifo sizuzwe njengefa . Lokhu kusho ukuthi sibangelwa ukuguquka kwezakhi zofuzo ezizuzwe njengefa kubazali bobabili. Izimpawu zingase ziqale ziseyingane, noma zingase zivele ebuntwaneni, noma ngisho nakamuva ekuphileni. Lesi yisifo esingeseqembu elibizwa ngokuthi i-lysosomal storage disorders . Ngeshwa, okwamanje akukho ukwelashwa kwalesi sifo.

Ziyini izinkinga zokugcina i-lysosomal?

Manje mhlawumbe uyazibuza, "Siyini lesi sifo sokugcina i-lysosomal?" Ake sichaze nalokho futhi.

Izinkinga zokugcina i-Lysosomal ziyiqembu lezifo ezizuzwe njengefa ezithinta i-metabolism yethu. Uyazi, i-metabolism yethu inqubo esiguqula ngayo ukudla esikudlayo kube amandla futhi sisuse ubuthi emzimbeni. Kunezinhlobo ezingaba ngu-50 zezinkinga zokugcina i-lysosomal. Isibonelo, isifo sikaTay-Sachs singesinye sezifo ezinjalo.

Igama elithi "Lysosomal" libhekisela ezingxenyeni ezincane ngaphakathi kwamaseli ethu, ezibizwa ngokuthi ama-lysosome. Ngaphakathi kwala ma-lysosome kukhona amaprotheni akhethekile abizwa ngokuthi ama-enzyme. Lawa ma-enzyme aphula ama-molecule amakhulu afana namafutha noshukela angena emizimbeni yethu futhi awaguqule abe ama-molecule alula. Kodwa-ke, emzimbeni womuntu onesifo sokugcina i-lysosomal, lawa ma-enzyme awakwazi ukwenza lowo msebenzi kahle. Khona-ke lawo ma-molecule amakhulu awaqhekeki futhi aqoqeke ngaphakathi kwamaseli. Yingakho kubizwa ngokuthi "ukuphazamiseka kokugcina."

Izifo zokugcina i-lysosomal njenge-GM1 gangliosidosis ziyizifo eziqhubekayo . Okusho ukuthi, njengoba inani lala ma-molecule liqongelela emzimbeni, izimpawu ziba zimbi kancane kancane.

Yiziphi izinhlobo eziyinhloko ze-GM1 gangliosidosis?

I-GM1 gangliosidosis yisifo esizalwa naso. Lokhu kusho ukuthi ushintsho lwezakhi zofuzo olubangela lesi sifo lukhona lapho umuntu ezalwa. Kodwa-ke, kungathatha isikhathi ukuthi izimpawu zivele. Odokotela bahlukanisa lesi sifo ngokweminyaka lapho izimpawu ziqala ukubonakala khona. Ngezinye izikhathi izimpawu kanye nesikhathi salezi zinhlobo kungahambisana.

Kunezinhlobo ezintathu eziyinhloko:

1. Isifo sosana esivamile (Uhlobo 1): Izimpawu zivame ukuqala ukuvela cishe ezinyangeni eziyisithupha ubudala. Lolu hlobo luba lubi kakhulu ngokushesha okukhulu.

2. Intsha (Uhlobo 2 - Intsha): Kulolu hlobo, izimpawu zivame ukuvela phakathi kweminyaka engu-1 no-5. Lesi sifo siqhubeka kancane kunasohlobo lokuqala.

3. Umuntu Omdala (Uhlobo 3 - Umuntu Omdala): Izimpawu zingaqala zisencane zineminyaka engu-3, ​​noma ziqale zisencane zineminyaka engu-30. Lesi sifo siqhubeka kancane kunezinye izinhlobo ezimbili.

Sivame kangakanani lesi sifo?

I-GM1 gangliosidosis iyisifo esingavamile kakhulu . Emhlabeni wonke, lesi sifo sithinta inani elincane kakhulu labantu, cishe oyedwa kwabayi-100,000 noma oyedwa kwabayi-200,000 .

Yini ebangela i-GM1 gangliosidosis?

Imbangela enkulu yalesi sifo ukuguquka kwezakhi zofuzo ze-GLB1 . Le zakhi zofuzo ze-GLB1 isiza ekwenzeni i-enzyme ebizwa ngokuthi i-beta-galactosidase, etholakala kuma-lysosome ethu. Le enzyme iphula ama-molecule afana ne-GM1 ganglioside. Le molecule ye-GM1 ganglioside ibaluleke kakhulu ekusebenzeni kahle kwamaseli ezinzwa ebuchosheni bethu.

Ngenxa yalolo shintsho lwezakhi zofuzo, umzimba awukwazi ukuphula i-molecule ye-GM1 ganglioside. Ngemuva kwalokho lawa ma-molecule aqala ukuqongelela kancane kancane ezicutshini nasezithweni zomzimba. Lokhu kubangela umonakalo ongenakuguqulwa kumaseli esimiso sezinzwa, ikakhulukazi ubuchopho kanye nomgogodla .

Ubani osengozini enkulu yokuthola lesi sifo?

Ukuze umntwana abe ne-GM1 gangliosidosis, kufanele athole ifa le-GLB1 eliguquliwe kubazali bobabili . Kulesi simo, bobabili abazali bangabathwali be-gene mutation, kodwa ababi nalesi sifo. Odokotela bakubiza lokhu ngokuthi yi-autosomal recessive disorder .

Ngisho noma bobabili abazali bengabathwali bokuguqulwa kwezakhi zofuzo ze-GLB1, izingane zabo zingase zibe nalesi sifo noma zingasitholi. Uma besenza kanjalo, ingane ivame ukuba nesifo esifanayo nesasizuzwe njengefa yizizukulwane zangaphambilini.

Uma bobabili abazali benalolu shintsho lwezakhi zofuzo, ingane ngayinye inamathuba alandelayo:

• Hlala ukhululekile engozini yesifo ngokungayitholi ifa lesakhi sofuzo esiguquliweIthuba elilodwa kwamane.
• I-GM1 gangliosidosis inethuba elilodwa kwamane lokuthola lesi sifo.
• Kukhona ithuba elilodwa kwamabili lokungasabalali lesi sifo, kodwa lokuba yimthwali wezakhi zofuzo.

Nakuba lokhu kuguquka kwezakhi zofuzo kungasebenza kunoma yimuphi umndeni, abantu baseJapan banamathuba amaningi okuthola isifo sohlobo lwesithathu .

Ziyini izimpawu ze-GM1 gangliosidosis?

Izimpawu ze-GM1 gangliosidosis ziyahlukahluka kuye ngohlobo. Futhi, ezinye izimpawu zingase zifane ezinhlotsheni eziningana.

Izici Zezingane Ezincane Ezijwayelekile (Uhlobo 1):

• Isisu esivuvukile
• Ubende obukhulu kanye nesibindi esikhulu
• Impendulo ethukile kakhulu emisindweni emikhulu
• Ukulahlekelwa ukuzwa
• Amabala abomvu emehlweni kanye nokulahlekelwa umbono
• Ukuhlehla kwezinyathelo zokukhula - Isibonelo, ingane eyayikwazi ukumamatheka noma ukuphakamisa ikhanda layo ayisakwazi ukwenza lezo zinto.
• Ukuquleka
• Amalunga aqinile noma ukukhubazeka kwamathambo
• Ithoni yemisipha ebuthakathaka (i-hypotonia)

Izici Zobusha (Uhlobo 2):

• I-Ataxia - izinkinga zokuxhumanisa nokulinganisela
• Isifo se-cornea - ukufiphala
• Ubunzima bokugwinya (i-dysphagia)
• I-Dystonia - ukufinyela kwemisipha ngokweqile
• Ukulahlekelwa umsebenzi wokuqonda noma amakhono okucabanga
• Izinkinga zokukhuluma (i-dysarthria)
• Ukuquleka

Izici zabantu abadala (Uhlobo 3):

• Ubuthakathaka bemisipha noma ukuwohloka
• Isifo se-cornea - ukufiphala
• Ukuqina kwemisipha (i-Dystonia)
• Izilonda zesikhumba ezingezona umdlavuza

I-GM1 gangliosidosis itholakala kanjani?

Uma othile emndenini wakho enalesi sifo, ukuhlolwa kwangaphambi kokubeletha kungasiza ekunqumeni ukuthi ingane yakho engakazalwa inaso yini i-gene mutation. Lokhu kungenziwa ngokuhlolwa kwe-genetic amniocentesis noma i-chorionic villus sampling (CVS). Lokhu kungathola amaseli aqukethe i-genus.

Ngaphezu kwalokho, lezi zivivinyo zenziwa ukuze kutholakale lesi sifo ezinganeni kusukela ezinsaneni kuya kubantu abadala:

• Ukuhlolwa kwe-enzyme: Lokhu kulinganisa inani le-enzyme ye-beta-galactosidase egazini lakho.
• Ukuhlolwa kwezakhi zofuzo zama-molecule:Lokhu futhi ukuhlolwa kwegazi. Kuhlola ukulandelana kwe-DNA ukuze kutholakale ukuguqulwa kwezakhi zofuzo ze-GLB1. Uyazi, i-DNA (deoxyribonucleic acid) yilokho esikuzuza njengefa kubazali bethu.
• Ukuhlolwa kwezinsana: Kwamanye amazwe, ukuhlolwa kwezinsana okuvamile ezibhedlela kuhlanganisa ukuhlolwa kwama-enzyme kwezinkinga zokugcina i-lysosomal.

Yiziphi izindlela zokwelapha i-GM1 gangliosidosis?

Okwamanje akukho ukwelashwa okuqondile, ukuhlinzwa, noma ukwelashwa kwe-GM1 gangliosidosis. Ukwelashwa kugxile ekuphatheni izimpawu zomuntu ngamunye kanye nokugcina impilo yakhe isezingeni elihle . Isibonelo, umuntu onesifo sokuwa anganikwa ukudla okune-ketogenic (keto diet) noma imithi yokulwa nokuwa njenge-gabapentin ukulawula ukuwa kwakhe.

Kodwa-ke, abacwaningi bezokwelapha bayaqhubeka nokuthola izindlela ezintsha zokwelapha ngisho nokuvimbela lesi sifo. Wena noma ingane yakho ningase nithole ithuba lokubamba iqhaza ezivivinyweni zemitholampilo ezihlola ukwelashwa okusha okusesesigabeni socwaningo.

Lezi zindlela zokwelapha zokuhlola zingafaka:

• Ukuthuthukiswa kwama-enzyme noma ukwelashwa kokufaka esikhundleni sama-enzyme
• Ukwelashwa nge-gene
• Ukufakelwa kwamaseli e-stem (okubizwa nangokuthi ukufakelwa komnkantsha)
• Ukwelashwa kokunciphisa i-substrate - Lokhu kuzama ukumisa inqubo yesifo ngokushintsha ama-molecule akhiqizwayo.

Ingabe i-GM1 gangliosidosis ingavinjelwa?

Uma ungumthwali wesakhi sofuzo esiguquliwe esibangela i-GM1 gangliosidosis, ungakhuluma nomeluleki wezakhi zofuzo ukuze nixoxe ngezinketho ezinganciphisa amathuba okuba izingane zakho zizuze isakhi sofuzo.

Isibonelo, inqubo ebizwa ngokuthi i-Preimplantation Genetic Diagnosis (PGD) ingakhomba imibungu engenalo ijini eliguquliwe. Udokotela angabe esedlulisela leyo mibungu enempilo esibelethweni esebenzisa inqubo ebizwa ngokuthi i-In Vitro Fertilization (IVF) . I-PGD ingasiza ekuqinisekiseni ukuthi ingane yakho ayiyona ethwala ijini noma ngeke ibe nalesi sifo.

Impilo yesikhathi esizayo iyoba njani kumuntu onalesi sifo?

Izimpawu ze-GM1 gangliosidosis ziya ngokuya ziba zimbi ngokuhamba kwesikhathi. Isikhathi sokuphila kanye nekhwalithi yokuphila komuntu onalesi sifo kuyahlukahluka kuye ngohlobo lwesifo:

• Izingane ezinesifo sohlobo 1 (ezincane zakudala) zingaseIngaphila iminyaka engaba mibili.
• Izingane ezinesifo sohlobo 2 (intsha) zingaphila zize zibe phakathi nobuntwana noma zibe ngabantu abadala , kuye ngokuthi izimpawu ziqala nini.
• Abantu abanesifo sohlobo 3 (abantu abadala) baphila isikhathi esifushane. Lokhu kuyahlukahluka kuye ngokuthi izimpawu ziqala nini, uhlobo kanye nobunzima bezimpawu.

Kufanele ubonane nini nodokotela?

Uma wena noma ingane yakho ninayo noma iyiphi yalezi zimpawu, bheka udokotela wakho ngokushesha:

• Izinkinga zokulinganisela noma zokuhamba
• Ubunzima bokuphefumula, ukugwinya noma ukukhuluma
• Izinguquko zokuzwa noma zokubona
• Amabala abomvu emehlweni
• Ukuquleka

Yini okufanele uyibuze udokotela wakho?

Ungase ufune ukubuza udokotela wakho imibuzo efana nale:

• Uhlobo luni lwe-GM1 gangliosidosis enginalo (noma ingane yami)?
• Yimiphi imithi etholakalayo yokuqeda izimpawu?
• Yini esingayenza ukuze sinciphise izimpawu ekhaya?
• Hlobo luni lochwepheshe bezokwelapha okufanele sibabone?
• Ingabe kufanele ngiqaphele izimpawu zezinkinga?
• Ingabe amanye amalungu omndeni wami kufanele ahlolwe lolu shintsho lwezakhi zofuzo?

Ekugcineni, umyalezo okufanele uwuthathe uye nawo ekhaya

I-GM1 gangliosidosis yisifo esingavamile, esizuzwe njengefa esibangela ukuthi umzimba ungakwazi ukuphula ama-molecule amafutha noshukela. Singeqembu lezinkinga zokugcina i-lysosomal. Lapho la ma-molecule eqoqana, kuvela izimpawu ezifana nokuquleka, izinkinga zokulinganisela, kanye nobunzima bokugwinya.

Ukuze uthuthukise lesi sifo, kufanele uthole ifa lokuguquka kwezakhi zofuzo okubangela lesi sifo kumama wakho nakubaba wakho. Ukwelashwa kuhloswe ukuqeda izimpawu ezithile. Nakuba okwamanje kungekho ikhambi, izivivinyo zemitholampilo ziyaqhubeka zokwelashwa okusha. Ungakhuluma nodokotela wakho ngezindlela zokunciphisa ingozi yokudlulisela lokhu kuguqulwa kwezakhi zofuzo ezizukulwaneni ezizayo.

Kuvamile ukuzizwa wesaba futhi ukhathazekile uma uthola ngesimo esinjengalesi. Kodwa-ke, kubalulekile ukuthola iseluleko sezokwelapha esifanele kanye nokusekelwa . Awuwedwa, futhi kukhona odokotela nabathandekayo abazokusiza kulolu hambo.

I- GM1 gangliosidosis, izifo zofuzo, izifo zokugcina i-lysosomal, izifo zemizwa, izifo ezingavamile, i-beta-galactosidase, i-GLB1 gene