Kev haus luam yeeb high-zog cannabis yuav puas paj fibers nyob rau hauv lub hlwb

Smoking high-strength cannabis may damage nerve fibres in brain

 

Powered by Guardian.co.ukQhov tsab xov xwm hu ua “Kev haus luam yeeb high-zog cannabis yuav puas paj fibers nyob rau hauv lub hlwb” raug sau los ntawm Ian Sample Science editor, rau Tus Saib Xyuas nyob rau hnub Friday 27th kaum ib hlis 2015 00.01 UTC

High-muaj zog ua cannabis yuav puas paj fibers uas lis cov ndlwg ntawm cov lus nyob rau hauv lub ob halves ntawm lub paj hlwb, zaum thov. Lub hlwb kev soj ntawm cov neeg uas tsis tu ncua smoked muaj zog tus tshwj ntxim zoo li cannabis qhia kev hloov maj mam sib txawv nyob rau hauv lub dawb teeb meem uas txuas rau sab laug thiab txoj cai hemispheres thiab yog cov Pib ntsais koj teeb ntawm ib sab ntawm lub paj hlwb mus rau lwm yam.

Cov kev hloov tau tsis pom nyob rau hauv cov neeg uas tsis siv cannabis los yog smoked tsuas tsawg hwj chim ntaub ntawv ntawm cov tshuaj, kev soj ntsuam pom.

Txoj kev tshawb no yog xav kom ua tau tus thawj saib ntawm cov teebmeem ntawm cannabis potency rau lub hlwb, thiab yuav qhia tau tias ntau dua kev siv ntawm tus tshwj ntxim yuav ua rau kev puas tsuaj rau lub corpus callosum, ua kev sib txuas lus nyob rau hauv lub paj hlwb hemispheres tsawg npaum.

Paola Dazzan, ib tug neurobiologist ntawm lub koom haum ntawm Psychiatry ntawm huab tais kawm ntawv qib siab London, hais tias cov teebmeem nyob yuav tsum tau txuas mus rau theem ntawm active ingredient, tetrahydrocannabinol (THC), nyob rau hauv cannabis. Thaum tsoos ntaub ntawv ntawm cannabis muaj 2 rau 4 % THC, lub hwj chim ntau yam (ntawm uas muaj txog 100), yuav muaj 10 rau 14% THC, raws li cov DrugScope sib hlub sib txhawb.

"Yog hais tias koj saib nyob rau lub corpus callosum, dab tsi peb nyob nraum pom yog ib tug tseem ceeb sib txawv nyob rau hauv lub dawb teeb meem ntawm cov neeg uas siv potency cannabis thiab cov neeg uas tsis siv cov tshuaj, los yog siv qhov uas tsis muaj-potency tshuaj,"Hais tias Dazzan. Lub corpus callosum yog nplua nuj nyob rau hauv cannabinoid receptors, uas tus THC tshuaj ua.

Ib tug DTI duab ntawm lub corpus callosum, raws li pom los ntawm cov sab, yog qhia nyob rau hauv liab thiab superimposed on ib tug tom qab MRI duab ntawm lub paj hlwb.
Ib tug DTI duab ntawm lub corpus callosum, raws li pom los ntawm cov sab, yog qhia nyob rau hauv liab thiab superimposed on ib tug tom qab MRI duab ntawm lub paj hlwb. Duab: Lub koom haum ntawm Psychiatry

"Qhov txawv yog muaj seb koj muaj psychosis los yog tsis, thiab peb xav tias qhov no yog nruj me ntsis txog lub potency ntawm lub cannabis,"Nws ntxiv. Paub meej ntawm txoj kev tshawb no yog qhia nyob rau hauv cov phau ntawv journal Puas siab puas ntsws tshuaj.

Cov soj ntsuam ntawm siv ob hom kev kawm scanning, sib nqus resonance duab (MRI) thiab diffusion tensor duab (DTI), mus xyuas lub corpus callosum, qhov loj tshaj plaws cheeb tsam ntawm dawb teeb meem, nyob rau hauv lub hlwb ntawm 56 cov neeg mob uas tau qhia ib tug thawj rov psychosis, thiab 43 noj qab nyob zoo tuaj pab dawb los ntawm lub zos cov zej zog.

Cov kev soj pom hais tias txhua txhua hnub cov neeg siv ntawm high-potency cannabis muaj ib tug me ntsis ntau dua - los ntawm hais txog 2% - "Txhais li cas diffusivity" nyob rau hauv lub corpus callosum. "Qhov ntawd qhia ib qho teeb meem nyob rau hauv lub dawb teeb meem uas thaum kawg yuav ua rau nws tsawg npaum,"Dazzan hais tus saib xyuas. "Peb tsis paub xyov yog dab tsi nws txhais tau hais rau tus neeg, tab sis nws qhia muaj tsawg npaum hloov lwm lub tsev ntawm cov ntaub ntawv. "

Cov kev tshawb no yuav tsis paub meej tias ntau ntawm THC nyob rau hauv cannabis ua hloov mus rau dawb teeb meem. Raws li Dazzan sau ntawv, nws yog tej zaum yuav hais tias cov neeg nrog puas dawb teeb meem yog feem ntau yuav haus luam yeeb tus tshwj ntxim nyob rau hauv lub thawj qhov chaw.

"Nws yog tau hais tias cov neeg no twb muaj ib tug txawv lub hlwb thiab lawv yog cov yuav los siv cannabis. Tab sis li cas peb yuav hais yog yog hais tias nws yog siab potency, thiab yog hais tias koj haus luam yeeb nquag, koj lub paj hlwb yog txawv los ntawm lub paj hlwb ntawm ib tug neeg uas haus luamyeeb ib txwm cannabis, thiab los ntawm ib tug neeg uas tsis txhob haus luam yeeb cannabis ntawm tag nrho cov,"Nws hais.

Tab sis txawm nrog lub uncertainty tshaj ua thiab txhob nyhuv, nws hais tias cov neeg siv thiab pej xeem noj qab haus huv neeg ua hauj lwm yuav hloov yuav ua li cas lawv xav tias txog cannabis siv. "Thaum nws los txog rau dej cawv, peb yuav siv los xav txog ntau npaum li cas cov neeg haus dej haus, thiab seb lawv puas haus cawv txiv hmab, npias, los yog whiskey. Peb yuav tsum xav seb cannabis nyob rau hauv ib txoj kev zoo, nyob rau hauv cov nqe lus ntawm THC thiab qhov sib txawv txheem cannabis yuav muaj, thiab cov uas cov teebmeem rau kev kho mob yuav sib txawv,"Nws hais.

"Raws li peb tau pom tias yav tas los, thaum nrug muaj feem luj cannabis siv, nws tseem ceeb heev kom paub yuav ua li cas feem ntau thiab cov hom kev cannabis yog siv. Cov ntsiab lus yuav pab tau yamntxwv txoj kev pheej hmoo ntawm kev puas hlwb noj qab haus huv teeb meem thiab ua rau kom paub txog ntawm lub hom ntawm kev puas tsuaj cov tshuaj yuav ua li cas rau lub paj hlwb,"Nws ntxiv.

Nyob rau hauv Lub ob hlis ntuj, Dazzan thiab lwm tus neeg hauv lub koom haum ntawm Psychiatry qhia hais tias cov npaj txhij nyob rau ntawm tus tshwj ntxim nyob rau hauv sab qab teb London tej zaum yuav qab ib tug sawv nyob rau hauv kev faib ua feem ntawm cov tshiab tus neeg muaj mob psychosis raug ntaus nqi mus rau cannabis.

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