An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition

Duchennen lihasdystrofia (DMD) on perinnöllinen sairaus, jonka esiintyvyys on noin 1/3600 poikavauvasta. Siihen liittyy lihasten heikkoutta, rappeutumista ja kognitiivista vajavaisuutta. Taudin aiheuttaa mutatoitunut geeni dystrophiini proteiinille. On esitetty, että kognitiivinen vajavaisuus johtu...

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Main Author: Ylikulju, Teemu
Other Authors: Yhteiskuntatieteellinen tiedekunta, Faculty of Social Sciences, Psykologian laitos, Department of Psychology, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2013
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/42229
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author Ylikulju, Teemu
author2 Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto
author_facet Ylikulju, Teemu Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto Ylikulju, Teemu Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto
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description Duchennen lihasdystrofia (DMD) on perinnöllinen sairaus, jonka esiintyvyys on noin 1/3600 poikavauvasta. Siihen liittyy lihasten heikkoutta, rappeutumista ja kognitiivista vajavaisuutta. Taudin aiheuttaa mutatoitunut geeni dystrophiini proteiinille. On esitetty, että kognitiivinen vajavaisuus johtuu taudin vaikutuksesta ehkäistä neurogeneesiä. Neurogeneesi on prosessi, joka jatkuvasti synnyttää uusia hermosoluja pääasiallisesti subventikulaari alueella ja hippokampuksen dentate gyruksella. Hoitoa ja parannusta tautiin tutkitaan yleensä mdx-hiirillä, joiden taudin etiologia on riittävän lähellä ihmisten tautia. Tämä tutkimus keskittyy pyrkimykseen vaikuttaa mdx-hiirten neurogeneesiin aerobisen liikunnan ja myostatiinin estäjän välityksellä. Myostatiinin estäjä lisää nisäkkäiden lihaskasvua. Tutkimuksella on kolme pääfokusta: 1. Vaikuttaako aerobinen harjoittelu mdx-hiirten neurogeneesiin? 2. Vaikuttavatko kasvaneet lihakset mdx-hiirten neurogeneesiin? 3. Vaikuttavatko aerobinen liikunta ja kasvaneiden lihasten yhteisvaikutus mdx-hiirten neurogeneesiin? Lisäksi myostatiinin estäjän vaikutusta juoksemisvalmiuteen arvioitiin. Myostatiinin ehkäisy vaikutti juoksemiseen lyhentämällä juoksumatkoja kokeen alkupuolella. Vastoin odotuksia lasketuista jakautuvista uusien hermosolujen lukumääristä ei löytynyt tilastollisesti merkitseviä eroja ryhmien välillä. Liikunta, suuret lihakset tai niiden yhdistelmä eivät tämän tutkimuksen mukaan ole riittäviä tai tarpeeksi vaikuttavia tekijöitä muuttamaan mdx-hiirten neurogeneesiä. Toinen mahdollinen syy erojen löytymättömyyteen solujen lukumääristä voi olla, että tauti ei ollut vaikuttanut mdx-hiirten neurogeneesiin. Duchenne`s muscular dystrophy (DMD) is an inherited disorder that occurs with 1 out of every 3600 male infants. It involves muscular weakness, dystrophy and cognitive dysfunction. The disorder is caused by a defective gene for dystrophin protein. It has been hypothesized that cognitive deficit occurs because DMD downregulates patients´ neurogenesis. Neurogenesis is a process where new brain cells are continuously generated at subventicular zone and dentate gyrus of hippocampus. Cures for DMD are mainly researched with mdx mice. Etiology of the mdx is close enough to that of patients with DMD. This research focuses on an attempt to enhance the neurogenesis of mdx mice via aerobic exercise and myostatin inhibition. Myostatin inhibition enhances mammals’ muscle growth. Research has three main focus: 1. Does aerobic exercise enhance neurogenesis in mdx mice? 2. Do bigger muscles enhance neurogenesis in mdx mice? 3. Does aerobic exercise with bigger muscles enhance neurogenesis in mdx mice? Also the effect of myostatin blocking on running readiness was examined. Myostatin inhibition affected running by decreasing running distances compared to pbs treated runners at the beginning of the experience. Against expectations there where no significant differences in proliferating new born cell count between any of the groups. It seems to be that neither exercise nor bigger muscles or their combination are factors that are sufficient or efficient enough to affect the neurogenesis of mdx mice. The other reasons for not finding any differences between cell counts could be that the neurogenesis of the mdx mice was not affected by the disease.
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Siihen liittyy lihasten heikkoutta, rappeutumista ja kognitiivista vajavaisuutta. Taudin aiheuttaa mutatoitunut geeni dystrophiini proteiinille. On esitetty, ett\u00e4 kognitiivinen vajavaisuus johtuu taudin vaikutuksesta ehk\u00e4ist\u00e4 neurogeneesi\u00e4. Neurogeneesi on prosessi, joka jatkuvasti synnytt\u00e4\u00e4 uusia hermosoluja p\u00e4\u00e4asiallisesti subventikulaari alueella ja hippokampuksen dentate gyruksella. Hoitoa ja parannusta tautiin tutkitaan yleens\u00e4 mdx-hiirill\u00e4, joiden taudin etiologia on riitt\u00e4v\u00e4n l\u00e4hell\u00e4 ihmisten tautia. T\u00e4m\u00e4 tutkimus keskittyy pyrkimykseen vaikuttaa mdx-hiirten neurogeneesiin aerobisen liikunnan ja myostatiinin est\u00e4j\u00e4n v\u00e4lityksell\u00e4. Myostatiinin est\u00e4j\u00e4 lis\u00e4\u00e4 nis\u00e4kk\u00e4iden lihaskasvua. Tutkimuksella on kolme p\u00e4\u00e4fokusta: 1. Vaikuttaako aerobinen\r\nharjoittelu mdx-hiirten neurogeneesiin? 2. Vaikuttavatko kasvaneet lihakset mdx-hiirten\r\nneurogeneesiin? 3. Vaikuttavatko aerobinen liikunta ja kasvaneiden lihasten yhteisvaikutus mdx-hiirten neurogeneesiin? Lis\u00e4ksi myostatiinin est\u00e4j\u00e4n vaikutusta juoksemisvalmiuteen arvioitiin.\r\nMyostatiinin ehk\u00e4isy vaikutti juoksemiseen lyhent\u00e4m\u00e4ll\u00e4 juoksumatkoja kokeen alkupuolella.\r\nVastoin odotuksia lasketuista jakautuvista uusien hermosolujen lukum\u00e4\u00e4rist\u00e4 ei l\u00f6ytynyt\r\ntilastollisesti merkitsevi\u00e4 eroja ryhmien v\u00e4lill\u00e4. Liikunta, suuret lihakset tai niiden yhdistelm\u00e4 eiv\u00e4t t\u00e4m\u00e4n tutkimuksen mukaan ole riitt\u00e4vi\u00e4 tai tarpeeksi vaikuttavia tekij\u00f6it\u00e4 muuttamaan mdx-hiirten neurogeneesi\u00e4. 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spellingShingle Ylikulju, Teemu An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition myostatiini neurogeneesi Neurogenesis Duchenne muscular dystrophy mdx mice aerobic exercise myostatin blocker nitric oxide Psykologia Psychology 202 Duchennen lihasdystrofia aerobinen harjoittelu
title An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
title_full An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
title_fullStr An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
title_full_unstemmed An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
title_short An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
title_sort attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
title_txtP An attempt to enhance neurogenesis of mdx mice via aerobic exercise and myostatin inhibition
topic myostatiini neurogeneesi Neurogenesis Duchenne muscular dystrophy mdx mice aerobic exercise myostatin blocker nitric oxide Psykologia Psychology 202 Duchennen lihasdystrofia aerobinen harjoittelu
topic_facet 202 Duchenne muscular dystrophy Duchennen lihasdystrofia Neurogenesis Psychology Psykologia aerobic exercise aerobinen harjoittelu mdx mice myostatiini myostatin blocker neurogeneesi nitric oxide
url https://jyx.jyu.fi/handle/123456789/42229 http://www.urn.fi/URN:NBN:fi:jyu-201309262361
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