Ngaba uyayazi i-GM1 Gangliosidosis? Makhe sithethe ngesi sifo singaqhelekanga!

Ngaba wakha weva ngemeko ebizwa ngokuba yi-GM1 gangliosidosis? Mhlawumbi akunjalo. Ngenxa yokuba yimeko engaqhelekanga, ayichaphazeli wonke umntu. Kodwa kubalulekile ukuzazi ezi meko. Ngamafutshane, esi sifo sibangela ukuba amasuntswana athile emizimbeni yethu, ingakumbi iiseli zemithambo-luvo, aqokeleleke aze onakalise ingqondo kunye nomqolo. Lo ngumonakalo ongenakuphikiswa.

Yintoni i-GM1 gangliosidosis?

Kulungile, masingene kwiinkcukacha ezithe vetshe. I-GM1 gangliosidosis sisifo esingaqhelekanga semfuza . Sibangela ukuba iimolekyuli ezithile emizimbeni yethu, ingakumbi amafutha kunye neeswekile, ziqokelele ngaphakathi kweeseli zemithambo-luvo ebuchotsheni nakwintambo yomqolo. Oku kuqokelelana kwenzeka kuba umzimba awuvelisi i-enzyme ekhethekileyo enceda ekudilizeni ezi molekyuli. Xa ezi molekyuli ziqokeleleka, iiseli zemithambo-luvo ziyayonakala kwaye zilahlekelwe ngumsebenzi wazo.

Esi sifo sizuzwe njengelifa . Oku kuthetha ukuba sibangelwa kukuguquka kwezakhi zofuzo ezizuzwe njengelifa kubazali bobabini. Iimpawu zisenokuqala esengumntwana, okanye zibonakale ebuntwaneni, okanye nasemva kwexesha ebomini. Esi sisifo esikwiqela elibizwa ngokuba yi -lysosomal storage disorders . Ngelishwa, okwangoku akukho nyango lwesi sifo.

Zithini iingxaki zokugcina i-lysosomal?

Ngoku mhlawumbi uyazibuza, "Yintoni le lysosomal storage disease?" Masichaze loo nto.

Izifo zokugcina i-Lysosomal liqela lezifo ezizuzwe njengelifa ezichaphazela imetabolism yethu. Uyazi, imetabolism yethu yinkqubo esiguqula ngayo ukutya esikutyayo kube ngamandla kwaye sisuse iityhefu emzimbeni. Kukho malunga neentlobo ezingama-50 zeengxaki zokugcina i-lysosomal. Umzekelo, isifo seTay-Sachs sesinye sezifo ezinjalo.

Igama elithi "Lysosomal" libhekisa kwiindawo ezincinci ngaphakathi kweeseli zethu, ezibizwa ngokuba zii-lysosomes. Ngaphakathi kwezi lysosomes kukho iiproteni ezikhethekileyo ezibizwa ngokuba zii-enzymes. Ezi enzymes ziqhekeza iimolekyuli ezinkulu ezifana namafutha kunye neeswekile ezingena emizimbeni yethu zize zizenze zibe ziimolekyuli ezilula. Nangona kunjalo, emzimbeni womntu onesifo sokugcina ii-lysosomal, ezi enzymes azinakwenza loo msebenzi ngokufanelekileyo. Emva koko ezo molekyuli zinkulu aziqhekeki kwaye ziqokelele ngaphakathi kweeseli. Yiyo loo nto ibizwa ngokuba "yingxaki yokugcina izinto."

Izifo zokugcina i-lysosomal ezifana ne-GM1 gangliosidosis zizifo eziqhubekekayo . Oko kukuthi, njengoko isixa sezi molekyuli siqokelelana emzimbeni, iimpawu ziya zisiba mandundu kancinci kancinci.

Ziziphi iintlobo eziphambili ze-GM1 gangliosidosis?

I-GM1 gangliosidosis sisifo esizalwa naso. Oku kuthetha ukuba utshintsho lwemfuza olubangela esi sifo lukhona xa umntu ezalwa. Nangona kunjalo, kungathatha ixesha ukuba iimpawu zibonakale. Oogqirha bahlula esi sifo ngokweminyaka apho iimpawu ziqala ukubonakala khona. Ngamanye amaxesha iimpawu kunye nexesha lale ntlobo zinokudibana.

Kukho iintlobo ezintathu eziphambili:

1. I-Classic infantile (Uhlobo 1): Iimpawu zihlala ziqala ukubonakala malunga neenyanga ezi-6 ubudala. Olu hlobo luba nzima kakhulu ngokukhawuleza.

2. Ulutsha (Uhlobo 2 - Ulutsha): Kolu hlobo, iimpawu zihlala zibonakala phakathi kweminyaka eli-1 neli-5 ubudala. Esi sifo siqhubeka kancinci kunakwihlobo lokuqala.

3. Umntu omdala (Uhlobo 3 - Umntu omdala): Iimpawu ziqala xa umntu eneminyaka emi-3 ubudala, okanye xa umntu eneminyaka engama-30 ubudala. Esi sifo siqhubeka kancinci kunezinye iintlobo ezimbini.

Ixhaphake kangakanani le sifo?

I-GM1 gangliosidosis sisifo esingaqhelekanga kakhulu . Ehlabathini lonke, esi sifo sichaphazela inani elincinci kakhulu labantu, malunga nomntu omnye kwi-100,000 okanye umntu omnye kwi-200,000 .

Yintoni ebangela i-GM1 gangliosidosis?

Eyona nto ibangela esi sifo kukuguquka kwejini ye-GLB1 . Le jini ye-GLB1 inceda ekwenzeni i-enzyme ebizwa ngokuba yi-beta-galactosidase, efumaneka kwi-lysosomes zethu. Le enzyme iqhekeza iimolekyuli ezifana ne-GM1 ganglioside. Le molecule ye-GM1 ganglioside ibaluleke kakhulu ekusebenzeni kakuhle kweeseli zemithambo-luvo engqondweni yethu.

Ngenxa yolo tshintsho lwemfuza, umzimba awukwazi ukuqhekeza imolekyuli ye-GM1 ganglioside. Emva koko ezi molekyuli ziqala ukuqokelelana kancinci kancinci kwizicwili nakwizitho zomzimba. Oku kubangela umonakalo ongenakuphikiswa kwiiseli zenkqubo yemithambo-luvo, ingakumbi ingqondo kunye nomqolo .

Ngubani osengozini enkulu yokuhlaselwa sesi sifo?

Ukuze umntwana abe ne-GM1 gangliosidosis, kufuneka afumane i-gene ye-GLB1 eguquliweyo kubazali bobabini . Kwimeko enjalo, bobabini abazali bangabathwali be-gene mutation, kodwa abaphuhlisi esi sifo. Oogqirha bathi oku yi-autosomal recessive disorder .

Nokuba abazali bobabini bangabathwali be-GLB1 gene mutation, abantwana babo basenokuba nesi sifo okanye bangasifumani. Ukuba bayasifumana, umntwana uhlala enesifo esifanayo nesasizuzwe zizizukulwana zangaphambili.

Ukuba bobabini abazali banalo olu tshintsho lwezakhi zofuzo, ngamnye kubantwana babo unamathuba alandelayo:

• Hlala ukhululekile kwingozi yesifo ngokungayifumani i-gene eguquliweyoIthuba eli-1 kwabane.
• I-GM1 gangliosidosis inethuba eli-1 kwabane lokufumana esi sifo.
• Kukho ithuba eli-1 kwaba-2 lokungafumani esi sifo, kodwa lokuba sithwali semfuza.

Nangona olu tshintsho lwemfuza lunokusebenza kulo naliphi na usapho, abantu baseJapan banamathuba amaninzi okufumana isifo seswekile sohlobo lwesithathu .

Zithini iimpawu ze-GM1 gangliosidosis?

Iimpawu ze-GM1 gangliosidosis ziyahluka ngokuxhomekeke kuhlobo. Kwakhona, ezinye iimpawu zinokuba ziqhelekile kwiintlobo ezahlukeneyo.

Iimpawu zomntwana oqhelekileyo (Uhlobo 1):

• Isisu esivuvukileyo
• I-spleen ekhulisiweyo kunye nesibindi esikhulu
• Impendulo eyoyikisayo kakhulu kwingxolo enkulu
• Ukulahlekelwa kukuva
• Amabala abomvu emehlweni kunye nokulahlekelwa ngumbono
• Ukwehla kweziganeko zokukhula - Umzekelo, umntwana owayekwazi ukuncuma okanye ukuphakamisa intloko yakhe akasakwazi ukwenza ezo zinto.
• Ukuxhuzula
• Amalungu aqinileyo okanye ukungaqheleki kwamathambo
• Ithoni yemisipha ebuthathaka (hypotonia)

Iimpawu zoButsha (Uhlobo 2):

• I-Ataxia - iingxaki zokulungelelanisa kunye nokulinganisela
• Isifo se-corneal - ukufiphala
• Ubunzima bokuginya (dysphagia)
• I-Dystonia - ukuxinana kwemisipha okugqithisileyo
• Ukulahlekelwa ngumsebenzi wokuqonda okanye izakhono zokucinga
• Iingxaki zokuthetha (i-dysarthria)
• Ukuxhuzula

Iimpawu zabantu abadala (Uhlobo 3):

• Ubuthathaka bemisipha okanye ukushwabana
• Isifo se-cornea - ukufiphala
• Ukuqaqamba kwemisipha (iDystonia)
• Izilonda zesikhumba ezingezizo umhlaza

Ifunyanwa njani i-GM1 gangliosidosis?

Ukuba kukho umntu kusapho lwakho onesifo, uvavanyo lwangaphambi kokuzalwa lunokunceda ekuqinisekiseni ukuba umntwana wakho ongekazalwa unayo na i-gene mutation. Oku kungenziwa ngovavanyo lwe-genetic amniocentesis okanye uvavanyo lwe-chorionic villus sampling (CVS). Ezi zinokubona iiseli eziqulethe i-genus.

Ukongeza, ezi mvavanyo zenziwa ukuze kufunyanwe esi sifo kubantwana, ukususela kwiintsana ukuya kubantu abadala:

• Uvavanyo lwe-enzyme: Olu lulinganisa ubungakanani be-enzyme ye-beta-galactosidase egazini lakho.
• Uvavanyo lwemfuza yemolekyuli:Olu luvavanyo lwegazi. Lujonga ulandelelwano lwe-DNA ukuze kuchongwe utshintsho lwe-gene ye-GLB1. Uyazi, i-DNA (deoxyribonucleic acid) yinto esiyizuza njengelifa kubazali bethu.
• Ukuhlolwa kweentsana ezisandul’ ukuzalwa: Kwamanye amazwe, ukuhlolwa kweentsana ezisandul’ ukuzalwa rhoqo ezibhedlele kubandakanya uvavanyo lwee-enzyme zeengxaki zokugcina i-lysosomal.

Ziziphi iindlela zonyango lwe-GM1 gangliosidosis?

Okwangoku akukho nyango luthile, utyando, okanye unyango lwe-GM1 gangliosidosis. Unyango lugxile ekulawuleni iimpawu zomntu ngamnye kunye nokugcina umgangatho wobomi obuhle . Umzekelo, umntu onesifo sokuxhuzula unokunikwa ukutya okune-ketogenic (keto diet) okanye amayeza okulwa nokuxhuzula afana ne-gabapentin ukulawula ukuxhuzula kwakhe.

Nangona kunjalo, abaphandi bezonyango bayaqhubeka nokufumana iindlela ezintsha zokunyanga kwanokuthintela esi sifo. Wena okanye umntwana wakho ninokufumana ithuba lokuthatha inxaxheba kuvavanyo lweklinikhi oluvavanya unyango olutsha olusesesigabeni sophando.

Olu nyango lovavanyo lungabandakanya:

• Unyango lokuphucula i-enzyme okanye ukutshintshwa kwe-enzyme
• Unyango lwe-gene
• Ukufakelwa kweeseli ze-stem (okubizwa ngokuba kukufakelwa komongo wethambo)
• Unyango lokunciphisa i-substrate - Olu nyango luzama ukumisa inkqubo yesifo ngokutshintsha iimolekyuli eziveliswayo.

Ngaba i-GM1 gangliosidosis ingathintelwa?

Ukuba ungumthwali wejini eguquliweyo ebangela i-GM1 gangliosidosis, ungathetha nomcebisi wezejini ukuze nixoxe ngeendlela ezinokunciphisa amathuba okuba abantwana bakho bafumane ijini.

Umzekelo, inkqubo ebizwa ngokuba yi -Preimplantation Genetic Diagnosis (PGD) inokuchonga iimbumba ezingenayo i-gene eguquliweyo. Ugqirha unokudlulisela ezo mbumba ziphilileyo esibelekweni esebenzisa inkqubo ebizwa ngokuba yi-In Vitro Fertilization (IVF) . I-PGD inokunceda ukuqinisekisa ukuba umntwana wakho akangomthwali we-gene okanye akayi kuba nesifo.

Buza kuba njani ubomi bexesha elizayo kumntu onesi sifo?

Iimpawu ze-GM1 gangliosidosis ziyanda kancinci kancinci ngokuhamba kwexesha. Ubungakanani bobomi bomntu onesi sifo buyahluka ngokuxhomekeke kuhlobo lwesifo:

• Iintsana ezine- Type 1 (ezincinci zakudala) zinokubaIngaphila iminyaka emalunga nemi-2.
• Abantwana abanesifo sohlobo lwesibini (abaselula) banokuphila baze babe phakathi kobuntwana okanye babe ngabantu abadala , kuxhomekeke kwiminyaka apho iimpawu ziqala khona.
• Abantu abanohlobo lwesithathu (abantu abadala) baphila ubomi obufutshane. Oku kuyahluka ngokuxhomekeke kwiminyaka apho iimpawu ziqala khona, uhlobo kunye nobunzima beempawu.

Ufanele uye nini kugqirha?

Ukuba wena okanye umntwana wakho unezinye zezi mpawu, bonana nogqirha wakho ngoko nangoko:

• Iingxaki zokulinganisela okanye zokuhamba
• Ubunzima bokuphefumla, ukuginya okanye ukuthetha
• Utshintsho lokuva okanye umbono
• Amabala abomvu emehlweni
• Ukuxhuzula

Yintoni omele uyibuze ugqirha wakho?

Usenokubuza ugqirha wakho imibuzo efana nale:

• Loluphi uhlobo lwe-GM1 gangliosidosis endinalo (okanye umntwana wam)?
• Ngawaphi amayeza afumanekayo ukunciphisa iimpawu?
• Singenza ntoni ukuze sinciphise iimpawu ekhaya?
• Ngabaphi oochwephesha bezonyango esifanele sibabone?
• Ngaba kufuneka ndiqaphele iimpawu zeengxaki?
• Ngaba amanye amalungu osapho lwam kufuneka avavanywe ukuze abone ukuba kukho olu tshintsho lwemfuza?

Okokugqibela, umyalezo oya ekhaya

I-GM1 gangliosidosis sisifo esingaqhelekanga, esizuzwe njengelifa esibangela ukuba umzimba ungakwazi ukuqhekeza iimolekyuli zamafutha kunye neswekile. Sikwiqela leengxaki zokugcina i-lysosomal. Xa ezi molekyuli ziqokelelana, iimpawu ezinje ngokuxhuzula, iingxaki zokulinganisela, kunye nobunzima bokuginya ziyavela.

Ukuze uphuhlise esi sifo, kufuneka ufumane i-gene mutation ebangela esi sifo kumama wakho nakutata wakho. Unyango lujolise ekunciphiseni iimpawu ezithile. Nangona okwangoku kungekho nyango, uvavanyo lweklinikhi luyaqhubeka lonyango olutsha. Ungathetha nogqirha wakho malunga neendlela zokunciphisa umngcipheko wokudlulisela olu tshintsho lwe-gene kwizizukulwana ezizayo.

Kuqhelekile ukuba uzive usoyika kwaye uxhalabile xa ufunda ngemeko efana nale. Nangona kunjalo, kubalulekile ukufumana iingcebiso zonyango ezifanelekileyo kunye nenkxaso . Awuwedwa, kwaye kukho oogqirha kunye nabantu obathandayo abanokukunceda kolu hambo.

I- GM1 gangliosidosis, izifo zemfuza, izifo zokugcina i-lysosomal, izifo ze-neurological, izifo ezingaqhelekanga, i-beta-galactosidase, i-GLB1 gene