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Athens News Agency: News in Greek, 10-07-04

Athens News Agency: News in ASCII Greek Directory - Previous Article - Next Article

From: The Athens News Agency at <http://www.ana.gr/>

PERIEXOMENA
  • [01] To xapi poy qa "diorqwnei" to biologiko mas roloi

    [01] To xapi poy qa "diorqwnei" to biologiko mas roloi

    Oi anqrwpoi den einai ftiagmenoi apo thn fysh na diasxizoyn monomias polles zwnes toy xronoy. Omws osoi arrwstainoyn apo ta yperatlantika kai genika apo ta poly makrina aeroporika tajidia kai xreiazontai meres gia na niwsoyn pali ygieis, mporoyn na anaqarrhsoyn. Germanoi ereynhtes anakalycan mia oysia poy einai shmantikh gia toys fysikoys ryqmoys toy swmatos mas, dhladh gia to ``biologiko roloi'' toy anqrwpoy. H anakalych mporei na odhghsei sthn ``ryqmish'' toy ``rologioy'' mesa apo ena xapi poy qa katasthsei parelqon ta basana, ta opoia prokalei to ``tzet lagk''.

    To ``tzet lagk'' oysiastika prokaleitai epeidh kaqe organo toy swmatos exei to diko toy ``moriako roloi''. An kai o egkefalos pasxizei kaqhmerina na sygxronisei ola ayta ta jexwrista biologika rologia, merika einai pio ``peismatarika'' kai antistekontai se mia nea ryqmish, poy einai anagkaia meta apo ena makrino tajidi. Etsi, enw o egkefalos toy tajidiwth mporei na exei prosarmostei sthn wra ths Neas Yorkhs, to pagkreas h ta nefra toy mporei na exoyn meinei b¦kollhmena se wra Aqhnas!

    Etsi, sto ``tzet lagk'' to eswteriko biologiko roloi ``aposygxronizetai'' logw ths diaforas me thn ejwterikh wra kai olos o organismos biwnei mia katastash anisorropias, me synepeia o tajidiwths na adynatei na prosarmostei sth nea zwnh xronoy otan fqanei ston proorismo toy, ypoferontas gia wres h kai gia meres apo naytia, aypnies, elleich orejhs, kopwsh, akoma kai kataqlich.

    Oi episthmones toy Institoytoy Biofysikhs Xhmeias Maj Plank sto Gketigken ths Germanias, ypo ton dra Gkregkor Aisele, se sxetikh ergasia poy paroysiasan sto ``Journal of Clinical Investigation'' (Periodiko Klinikwn Ereynwn), symfwna me th bretanikh ``Telegkraf'', anaferoyn oti anakalycan pws h ormonh kortizolh einai ayth poy apotelei to ``kleidi'' gia na menoyn sygxronismenoi oi biologikoi (kirkadianoi) ryqmoi toy anqrwpoy.

    Opws diapistwsan, ta epipeda ths kortizolhs koryfwnontai stis 8 to prwi kai meta stadiaka meiwnontai gia na ftasoyn sto xamhlotero epipedo toys anamesa sta mesanyxta kai stis 4 ta jhmerwmata. Anaprosarmozontas to megisto kai elaxisto epipedo ths sygkekrimenhs ormonhs me th bohqeia enos xapioy, oi ereynhtes pisteyoyn oti einai dynato na apokatastaqei h biologikh isorropia sto swma kai ton egkefalo kai etsi na jeperastoyn oi synepeies toy ``tzet lagk''.

    Oi germanoi episthmones, kanontas peiramata me pontikia, symperanan oti mia oysia hdh diaqesimh (h metyraponh) mporei na ryqmisei to epipedo ths kortizolhs kai qewroyn oti kati analogo mporei na symbei kai stoys anqrwpoys.

    Opws eipe o Aisele, ``qeloyme na anaptyjoyme ena xapi poy o tajidiwths qa to pairnei peripoy mia mera prin tajidecei''. Omws ena tetoio xapi qa mporoyse epishs na xrhsimopoihqei oxi mono apo tajidiwtes, alla kai apo ergazomenoys se kyliomenes bardies (kai arga th nyxta), kati poy exei piqanes epiptwseis sthn ygeia toys (karkinos, emfragma, egkefaliko k.a.), epeidh pali aporryqmizetai to biologiko roloi toys.

    Paramenei to erwthmatiko gia tis piqanes parenergeies enos tetoioy xapioy. Opws eipe o Aisele, ``h dynhtikh agora einai terastia, omws qa eprepe na yparxoyn liges mono parenergeies apo ena tetoio xapi''.

    Prohgoymenes ereynes exoyn deijei oti oi egkefaloi toy iptamenoy proswpikoy twn aeroporikwn etairiwn teinoyn na syrriknwnontai logw toy xronioy ``tzet lagk'', enw parallhla ekkrinoyn perissoteres ormones toy stres. Epishs oi gynaikes aerosynodoi paroysiazoyn diataraxes ston kyklo ths periodoy toys.

    Syndesmos gia thn prwtotyph episthmonikh ergasia sth dieyqynsh: http://www.jci.org/articles/view/41192 .


    Athens News Agency: News in ASCII Greek Directory - Previous Article - Next Article
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