{"id":49667,"date":"2026-06-06T09:47:04","date_gmt":"2026-06-06T07:47:04","guid":{"rendered":"https:\/\/semaxpolska.com\/?p=49667"},"modified":"2026-06-01T09:55:56","modified_gmt":"2026-06-01T07:55:56","slug":"jak-dziala-sosna","status":"publish","type":"post","link":"https:\/\/bioevidencehub.com\/cs\/jak-dziala-pinealon\/","title":{"rendered":"Jak dzia\u0142a Pinealon?"},"content":{"rendered":"

Pinealon je bioregula\u010dn\u00ed peptid, kter\u00fd v experiment\u00e1ln\u00edch studi\u00edch vykazuje potenci\u00e1l pro ochranu neuron\u016f, regulaci bun\u011b\u010dn\u00fdch proces\u016f a podporu zdrav\u00e9ho st\u00e1rnut\u00ed. Kv\u016fli sv\u00fdm mnohostrann\u00fdm mechanism\u016fm \u00fa\u010dinku st\u00e1le v\u00edce v\u00fdzkumn\u00edk\u016f analyzuje ot\u00e1zku: \u201eJak dzia\u0142a Pinealon?\u201d<\/strong>, se zam\u011b\u0159en\u00edm na jeho vliv na oxida\u010dn\u00ed stres, genovou expresi, sign\u00e1ln\u00ed dr\u00e1hy a funkci nervov\u00e9ho syst\u00e9mu.<\/p>\n

Regulace oxida\u010dn\u00edho stresu<\/h3>\n

Jedn\u00edm z nejl\u00e9pe prozkouman\u00fdch mechanism\u016f \u00fa\u010dinku Pinealonu je jeho schopnost regulovat oxida\u010dn\u00ed stres a omezovat hromad\u011bn\u00ed reaktivn\u00edch forem kysl\u00edku (ROS). Oxida\u010dn\u00ed stres nast\u00e1v\u00e1, kdy\u017e produkce voln\u00fdch radik\u00e1l\u016f p\u0159ev\u00fd\u0161\u00ed p\u0159irozen\u00e9 antioxida\u010dn\u00ed mechanismy organismu, co\u017e vede k po\u0161kozen\u00ed b\u00edlkovin, lipid\u016f, DNA a mitochondri\u00ed. Vysok\u00e1 \u00farove\u0148 oxida\u010dn\u00edho stresu je v\u0161eobecn\u011b pova\u017eov\u00e1na za jeden z faktor\u016f p\u0159isp\u00edvaj\u00edc\u00edch ke st\u00e1rnut\u00ed organismu, zhor\u0161en\u00ed kognitivn\u00edch funkc\u00ed a rozvoji neurodegenerativn\u00edch onemocn\u011bn\u00ed. Laboratorn\u00ed studie prok\u00e1zaly, \u017ee Pinealon m\u016f\u017ee d\u00e1vkov\u011b z\u00e1visl\u00fdm zp\u016fsobem omezovat akumulaci ROS v neuronech mal\u00e9ho mozku, neutrofilech a bu\u0148k\u00e1ch feochromocytomu PC12 vystaven\u00fdch oxida\u010dn\u00edmu stresu (1).<\/p>\n

Khavinson a jeho spolupracovn\u00edci prok\u00e1zali, \u017ee Pinealon v\u00fdznamn\u011b sni\u017eoval oxida\u010dn\u00ed po\u0161kozen\u00ed a zlep\u0161oval p\u0159e\u017eit\u00ed bun\u011bk v podm\u00ednk\u00e1ch, kter\u00e9 obvykle vedou k nadm\u011brn\u00e9 produkci voln\u00fdch radik\u00e1l\u016f (1). Peptid tak\u00e9 omezoval pod\u00edl nekrotick\u00fdch bun\u011bk, co\u017e nazna\u010duje ochrann\u00fd \u00fa\u010dinek proti po\u0161kozen\u00ed zp\u016fsoben\u00e9mu oxida\u010dn\u00edm stresem. Tyto v\u00fdsledky nazna\u010duj\u00ed, \u017ee Pinealon m\u016f\u017ee podporovat udr\u017een\u00ed norm\u00e1ln\u00edch bun\u011b\u010dn\u00fdch funkc\u00ed sn\u00ed\u017een\u00edm po\u0161kozen\u00ed souvisej\u00edc\u00edch s oxida\u010dn\u00edm stresem a zv\u00fd\u0161en\u00edm odolnosti v\u016f\u010di environment\u00e1ln\u00edm a metabolick\u00fdm faktor\u016fm.<\/p>\n

Podobne obserwace byly z\u00edsk\u00e1ny ve studi\u00edch na zv\u00ed\u0159atech. Potomk\u016fm vystaven\u00fdm prenat\u00e1ln\u00ed hyperhomocysteinemii sn\u00ed\u017eil Pinealon intracelul\u00e1rn\u00ed hladinu ROS v neuronech moze\u010dku a zv\u00fd\u0161il odolnost proti oxida\u010dn\u00edmu po\u0161kozen\u00ed vyvolan\u00e9mu expozic\u00ed peroxidu vod\u00edku (2). Auto\u0159i studie dosp\u011bli k z\u00e1v\u011bru, \u017ee neuroprotektivn\u00ed vlastnosti Pinealonu jsou \u00fazce spojeny s jeho schopnost\u00ed omezovat oxida\u010dn\u00ed stres a podporovat p\u0159e\u017eit\u00ed neuron\u016f.<\/p>\n

N\u011bkte\u0159\u00ed v\u00fdzkumn\u00edci rovn\u011b\u017e nazna\u010duj\u00ed, \u017ee Pinealon m\u016f\u017ee ovliv\u0148ovat endogenn\u00ed antioxida\u010dn\u00ed syst\u00e9my organismu, v\u010detn\u011b aktivity enzym\u016f, jako je superoxiddismut\u00e1za (SOD2) a glutathionperoxid\u00e1za (GPX1). A\u010dkoli p\u0159\u00edm\u00e9 d\u016fkazy z klinick\u00fdch studi\u00ed na lidech jsou st\u00e1le omezen\u00e9, p\u0159edpokl\u00e1d\u00e1 se, \u017ee tyto antioxida\u010dn\u00ed vlastnosti mohou p\u0159isp\u00edvat k pozorovan\u00fdm neuroprotektivn\u00edm \u00fa\u010dink\u016fm a \u00fa\u010dink\u016fm podporuj\u00edc\u00edm zdrav\u00e9 st\u00e1rnut\u00ed (1,2).<\/p>\n

Sign\u00e1ln\u00ed dr\u00e1ha MAPK\/ERK<\/h3>\n

Pinealon m\u016f\u017ee vyvol\u00e1vat sv\u00e9 biologick\u00e9 \u00fa\u010dinky tak\u00e9 prost\u0159ednictv\u00edm vlivu na intracelul\u00e1rn\u00ed sign\u00e1ln\u00ed dr\u00e1hy zodpov\u011bdn\u00e9 za adaptaci a p\u0159e\u017eit\u00ed bun\u011bk. Jednou z drah identifikovan\u00fdch v experiment\u00e1ln\u00edch studi\u00edch je dr\u00e1ha mitogenem aktivovan\u00fdch proteinov\u00fdch kin\u00e1z a extracelul\u00e1rn\u00ed sign\u00e1ln\u00ed regulovan\u00fdch kin\u00e1z (MAPK\/ERK), kter\u00e1 hraje d\u016fle\u017eitou roli v regulaci bun\u011b\u010dn\u00e9ho r\u016fstu, diferenciace, odpov\u011bdi na stres a proces\u016f p\u0159e\u017eit\u00ed.<\/p>\n

V\u00fdzkum Khavinsona a spolupracovn\u00edk\u016f uk\u00e1zal, \u017ee ochrann\u00fd \u00fa\u010dinek Pinealonu souvisel se zpo\u017ed\u011bnou aktivac\u00ed signalizace ERK1\/2 (1). Proteiny ERK funguj\u00ed jako kl\u00ed\u010dov\u00e9 regul\u00e1tory bun\u011b\u010dn\u00e9 adaptace, p\u0159en\u00e1\u0161\u00ed sign\u00e1ly z povrchu bu\u0148ky do j\u00e1dra, kde ovliv\u0148uj\u00ed programy genov\u00e9 exprese. Aktivace ERK1\/2 je b\u011b\u017en\u011b spojov\u00e1na se zlep\u0161enou bun\u011b\u010dnou \u017eivotaschopnost\u00ed a vy\u0161\u0161\u00ed odolnost\u00ed v\u016f\u010di nep\u0159\u00edzniv\u00fdm podm\u00ednk\u00e1m prost\u0159ed\u00ed.<\/p>\n

V\u00fdzkum tak\u00e9 uk\u00e1zal, \u017ee Pinealon ovliv\u0148oval regulaci bun\u011b\u010dn\u00e9ho cyklu a z\u00e1rove\u0148 omezoval oxida\u010dn\u00ed stres a bun\u011b\u010dnou smrt (1). Tyto pozorov\u00e1n\u00ed nazna\u010duj\u00ed, \u017ee peptid m\u016f\u017ee nejen chr\u00e1nit bu\u0148ky p\u0159ed po\u0161kozen\u00edm, ale tak\u00e9 podporovat adapta\u010dn\u00ed a regenera\u010dn\u00ed procesy prost\u0159ednictv\u00edm dr\u00e1hy MAPK\/ERK. Tyto mechanismy mohou p\u0159isp\u00edvat k pozorovan\u00fdm \u00fa\u010dink\u016fm spojen\u00fdm se zdrav\u00fdm st\u00e1rnut\u00edm, odolnost\u00ed neuron\u016f a udr\u017een\u00edm kognitivn\u00edch funkc\u00ed.<\/p>\n

Regulace gen\u016f a epigenetick\u00e1 aktivita<\/h3>\n

Jednou z nejv\u00fdrazn\u011bj\u0161\u00edch vlastnost\u00ed Pinealonu je jeho potenci\u00e1ln\u00ed schopnost ovliv\u0148ovat genovou expresi prost\u0159ednictv\u00edm p\u0159\u00edm\u00fdch interakc\u00ed s DNA. Studie Fedorejevov\u00e9 a jej\u00edch spolupracovn\u00edk\u016f uk\u00e1zaly, \u017ee fluorescen\u010dn\u011b zna\u010den\u00e9 molekuly Pinealonu mohou pronikat do \u017eiv\u00fdch bun\u011bk a lokalizovat se v cytoplazm\u011b, bun\u011b\u010dn\u00e9m j\u00e1dru a jad\u00e9rku (3). Toto zji\u0161t\u011bn\u00ed nazna\u010duje, \u017ee Pinealon m\u016f\u017ee interagovat se strukturami zapojen\u00fdmi do genetick\u00e9 regulace, nikoli v\u00fdlu\u010dn\u011b s receptory na povrchu bun\u011bk.<\/p>\n

Dal\u0161\u00ed anal\u00fdzy uk\u00e1zaly, \u017ee Pinealon selektivn\u011b interaguje s konkr\u00e9tn\u00edmi nukleotidov\u00fdmi sekvencemi DNA a deoxyribooligonukleotidy (3). Peptid vykazoval schopnost rozpozn\u00e1vat sekvence a preferen\u010dn\u011b se v\u00e1zat na motivy DNA zapojen\u00e9 do regulace genov\u00e9 exprese. V\u00fdzkumn\u00edci rovn\u011b\u017e pozorovali, \u017ee Pinealon dok\u00e1\u017ee rozli\u0161ovat r\u016fzn\u00e9 vzorce metylace DNA, co\u017e nazna\u010duje vysoce selektivn\u00ed interakci s genetick\u00fdm materi\u00e1lem.<\/p>\n

Tyto v\u00fdsledky vedly k za\u0159azen\u00ed Pinealonu jako epigenetick\u00e9ho bioregula\u010dn\u00edho peptidu. Nam\u00edsto zm\u011bny samotn\u00e9 struktury DNA se zd\u00e1, \u017ee Pinealon ovliv\u0148uje aktivitu gen\u016f zapojen\u00fdch do bun\u011b\u010dn\u00e9 adaptace, odolnosti v\u016f\u010di stresu a funkce neuron\u016f (3). Tento mechanismus m\u016f\u017ee \u010d\u00e1ste\u010dn\u011b vysv\u011btlovat, jak tripeptid slo\u017een\u00fd pouze ze t\u0159\u00ed aminokyselin dok\u00e1\u017ee vyvolat m\u011b\u0159iteln\u00e9 biologick\u00e9 \u00fa\u010dinky v mnoha tk\u00e1n\u00edch a org\u00e1nov\u00fdch syst\u00e9mech.<\/p>\n

Jeliko\u017e epigenetick\u00e1 regulace hraje v\u00fdznamnou roli v procesech st\u00e1rnut\u00ed, neuroprotekci a udr\u017eov\u00e1n\u00ed bun\u011b\u010dn\u00fdch funkc\u00ed, schopnost Pinealonu ovliv\u0148ovat genovou expresi z\u016fst\u00e1v\u00e1 jednou z jeho nejzaj\u00edmav\u011bj\u0161\u00edch v\u011bdeck\u00fdch vlastnost\u00ed. K pln\u00e9mu zhodnocen\u00ed v\u00fdznamu t\u011bchto interakc\u00ed pro lidsk\u00e9 zdrav\u00ed jsou v\u0161ak zapot\u0159eb\u00ed dal\u0161\u00ed klinick\u00e9 studie.<\/p>\n

Exprese serotoninu a neurotransmiterov\u00e1 regulace<\/h3>\n

Dal\u0161\u00edm navrhovan\u00fdm mechanismem \u00fa\u010dinku Pinealonu je regulace produkce serotoninu v mozkov\u00fdch bu\u0148k\u00e1ch. Serotonin je neurotransmiter, kter\u00fd se pod\u00edl\u00ed na regulaci n\u00e1lady, sp\u00e1nku, pam\u011bti, proces\u016f u\u010den\u00ed, emocion\u00e1ln\u00ed rovnov\u00e1hy a celkov\u00e9ho neurologick\u00e9ho zdrav\u00ed.<\/p>\n

Ve studi\u00edch bun\u011b\u010dn\u00fdch kultur mozkov\u00e9 k\u016fry ze st\u00e1rnouc\u00edho mozku Khavinson a spolupracovn\u00edci prok\u00e1zali, \u017ee peptid EDR zvy\u0161uje expresi genu k\u00f3duj\u00edc\u00edho hydroxyptyd\u00e1zu tryptofanu \u2013 enzym omezuj\u00edc\u00ed rychlost synt\u00e9zy serotoninu (4). Anal\u00fdza molekul\u00e1rn\u00edho dokov\u00e1n\u00ed nazna\u010dovala, \u017ee Pinealon by mohl interagovat se specifick\u00fdmi nukleotidov\u00fdmi sekvencemi souvisej\u00edc\u00edmi s t\u00edmto genem, co\u017e potenci\u00e1ln\u011b zvy\u0161uje produkci serotoninu prost\u0159ednictv\u00edm epigenetick\u00fdch mechanism\u016f.<\/p>\n

V\u011bdci zjistili, \u017ee Pinealon p\u016fsob\u00ed jako regul\u00e1tor exprese serotoninu a tato aktivita m\u016f\u017ee p\u0159isp\u00edvat k jeho pozorovan\u00fdm neuroprotektivn\u00edm a podporuj\u00edc\u00edm zdrav\u00e9 st\u00e1rnut\u00ed \u00fa\u010dink\u016fm (4). Zv\u00fd\u0161en\u00e1 serotoninov\u00e1 aktivita m\u016f\u017ee podporovat spr\u00e1vn\u00e9 st\u00e1rnut\u00ed mozku, komunikaci mezi neurony, psychickou pohodu a kognitivn\u00ed funkce.<\/p>\n

Mechanismus spojen\u00fd se serotoninem vzbudil tak\u00e9 z\u00e1jem o potenci\u00e1ln\u00ed vliv Pinealonu na sp\u00e1nek a kognitivn\u00ed funkce. A\u010dkoli se v u\u017eivatelsk\u00fdch zpr\u00e1v\u00e1ch \u010dasto objevuj\u00ed informace o zlep\u0161en\u00ed kvality sp\u00e1nku a \u017eiv\u011bj\u0161\u00edch snech, kontrolovan\u00e9 klinick\u00e9 studie t\u011bchto \u00fa\u010dink\u016f jsou st\u00e1le omezen\u00e9. Sou\u010dasn\u00e1 data tedy potvrzuj\u00ed zapojen\u00ed Pinealonu do serotininov\u00fdch drah na bun\u011b\u010dn\u00e9 \u00farovni, ale neumo\u017e\u0148uj\u00ed jednozna\u010dn\u011b potvrdit klinick\u00e9 \u00fa\u010dinky na sp\u00e1nek \u010di kognitivn\u00ed funkce.<\/p>\n

Pinealon a neuroprotekce<\/h3>\n

Neuroprotekce je jednou z nejintenzivn\u011bji zkouman\u00fdch oblast\u00ed souvisej\u00edc\u00edch s \u00fa\u010dinkem Pinealonu. \u0158ada laboratorn\u00edch studi\u00ed a experiment\u016f na zv\u00ed\u0159atech nazna\u010duje, \u017ee Pinealon m\u016f\u017ee pom\u00e1hat chr\u00e1nit neurony p\u0159ed oxida\u010dn\u00edm stresem, omezovat po\u0161kozen\u00ed nervov\u00fdch bun\u011bk, zachov\u00e1vat integritu synaptick\u00fdch struktur a podporovat celkovou funkci mozku (1,2,5).<\/p>\n

Jedn\u00edm z nejsiln\u011bj\u0161\u00edch d\u016fkaz\u016f jsou studie t\u00fdkaj\u00edc\u00ed se prenat\u00e1ln\u00ed hyperhomocysteinemie, stavu spojen\u00e9ho se zv\u00fd\u0161en\u00fdm oxida\u010dn\u00edm stresem a poruchami neurologick\u00e9ho v\u00fdvoje. Arutjunjan a jeho kolegov\u00e9 prok\u00e1zali, \u017ee Pinealon v\u00fdznamn\u011b zlep\u0161il kognitivn\u00ed funkce u potomk\u016f vystaven\u00fdch prenat\u00e1ln\u00ed hyperhomocysteinemii a z\u00e1rove\u0148 omezil po\u0161kozen\u00ed neuron\u016f (2). Neurony z moze\u010dku z\u00edskan\u00e9 od zv\u00ed\u0159at l\u00e9\u010den\u00fdch Pinealonem vykazovaly ni\u017e\u0161\u00ed hladinu oxida\u010dn\u00edho stresu, ni\u017e\u0161\u00ed po\u010det nekrotick\u00fdch bun\u011bk a vy\u0161\u0161\u00ed odolnost v\u016f\u010di po\u0161kozen\u00ed vyvolan\u00e9mu peroxidem vod\u00edku. Tyto v\u00fdsledky nazna\u010duj\u00ed, \u017ee Pinealon zvy\u0161uje p\u0159e\u017eit\u00ed neuron\u016f v n\u00e1ro\u010dn\u00fdch fyziologick\u00fdch podm\u00ednk\u00e1ch.<\/p>\n

Dal\u0161\u00ed podporu poskytuj\u00ed studie t\u00fdkaj\u00edc\u00ed se Alzheimerovy choroby. V bun\u011b\u010dn\u00e9m modelu amyloidem indukovan\u00e9 synaptick\u00e9 toxicity Kraskovskaya a spolupracovn\u00edci prok\u00e1zali, \u017ee Pinealon zvy\u0161oval po\u010det zral\u00fdch dendritick\u00fdch v\u00fdb\u011b\u017ek\u016f typu \u201emushroom\u201d o 71%, \u010d\u00edm\u017e obnovil jejich hustotu na \u00farove\u0148 podobnou t\u00e9, kter\u00e1 byla pozorov\u00e1na u zdrav\u00fdch kontroln\u00edch bun\u011bk (5). Dendritick\u00e9 v\u00fd\u010dn\u011blky jsou kl\u00ed\u010dov\u00fdmi strukturami umo\u017e\u0148uj\u00edc\u00edmi komunikaci mezi neurony a hraj\u00ed \u00fast\u0159edn\u00ed roli v procesech u\u010den\u00ed a pam\u011bti. Zachov\u00e1n\u00ed t\u011bchto struktur je pova\u017eov\u00e1no za d\u016fle\u017eit\u00fd marker neuroprotektivn\u00ed aktivity.<\/p>\n

Nov\u011bj\u0161\u00ed studie, proveden\u00e9 Khavinsonem a spolupracovn\u00edky, analyzovaly \u00fa\u010dinek Pinealonu na my\u0161\u00edm modelu Alzheimerovy choroby a uk\u00e1zaly neuroprotektivn\u00ed \u00fa\u010dinky spojen\u00e9 se zlep\u0161en\u00edm odolnosti neuron\u016f a adapta\u010dn\u00edch schopnost\u00ed bun\u011bk (6). Auto\u0159i za\u0159adili Pinealon do skupiny kr\u00e1tk\u00fdch epigenetick\u00fdch peptid\u016f schopn\u00fdch regulovat bun\u011b\u010dn\u00e9 funkce a chr\u00e1nit neurony p\u0159ed degenerac\u00ed souvisej\u00edc\u00ed s v\u011bkem.<\/p>\n

Neuroprotektivn\u00ed \u00fa\u010dinky Pinealonu jsou p\u0159ipisov\u00e1ny n\u011bkolika vz\u00e1jemn\u011b se dopl\u0148uj\u00edc\u00edm mechanism\u016fm. Mezi n\u011b pat\u0159\u00ed omezen\u00ed produkce reaktivn\u00edch forem kysl\u00edku, sn\u00ed\u017een\u00ed oxida\u010dn\u00edho po\u0161kozen\u00ed, aktivace drah p\u0159e\u017eit\u00ed bun\u011bk, ochrana synaptick\u00fdch struktur a regulace gen\u016f zapojen\u00fdch do udr\u017eov\u00e1n\u00ed spr\u00e1vn\u00e9 funkce neuron\u016f (1\u20133,5,6). Tyto \u00fa\u010dinky jako celek mohou podporovat neuroplasticitu, tedy schopnost mozku adaptovat se, reorganizovat a vytv\u00e1\u0159et nov\u00e1 nervov\u00e1 spojen\u00ed.<\/p>\n

A\u010dkoli p\u0159\u00edm\u00e9 d\u016fkazy podporuj\u00edc\u00ed zlep\u0161en\u00e9 okysli\u010den\u00ed mozku z\u016fst\u00e1vaj\u00ed omezen\u00e9, n\u011bkolik studi\u00ed nazna\u010duje, \u017ee Pinealon zvy\u0161uje odolnost neuron\u016f v\u016f\u010di metabolick\u00e9mu a oxida\u010dn\u00edmu stresu, co\u017e m\u016f\u017ee nep\u0159\u00edmo podporovat spr\u00e1vn\u00e9 fungov\u00e1n\u00ed mozku a bun\u011b\u010dn\u00e9 vyu\u017eit\u00ed energie (1,2). Jsou v\u0161ak zapot\u0159eb\u00ed dal\u0161\u00ed klinick\u00e9 studie, aby se zjistilo, zda pozorovan\u00e9 experiment\u00e1ln\u00ed \u00fa\u010dinky vedou k m\u011b\u0159iteln\u00fdm p\u0159\u00ednos\u016fm u lid\u00ed.<\/p>\n

Celkov\u011b sou\u010dasn\u00fd v\u00fdzkum prezentuje Pinealon jako slibn\u00fd neuroprotektivn\u00ed peptid s potenci\u00e1ln\u00edm v\u00fdznamem pro kognitivn\u00ed st\u00e1rnut\u00ed, neurodegeneraci, neuronovou imunitu a podporu zdrav\u00ed mozku. Je v\u0161ak t\u0159eba zd\u016fraznit, \u017ee v\u011bt\u0161ina dostupn\u00fdch d\u016fkaz\u016f poch\u00e1z\u00ed z preklinick\u00fdch studi\u00ed a pro potvrzen\u00ed jeho terapeutick\u00e9ho potenci\u00e1lu jsou st\u00e1le zapot\u0159eb\u00ed rozs\u00e1hl\u00e9 studie na lidech.<\/p>\n

Pinealon a kognitivn\u00ed funkce<\/h3>\n

Nej\u010dast\u011bji diskutovan\u00e9 potenci\u00e1ln\u00ed p\u0159\u00ednosy Pinealonu zahrnuj\u00ed jeho mo\u017en\u00e9 \u00fa\u010dinky na u\u010den\u00ed, pam\u011b\u0165, kognitivn\u00ed funkce a celkov\u00e9 fungov\u00e1n\u00ed mozku. A\u010dkoliv klinick\u00e9 \u00fadaje z lidsk\u00fdch studi\u00ed z\u016fst\u00e1vaj\u00ed omezen\u00e9, n\u011bkolik studi\u00ed na zv\u00ed\u0159atech poskytuje cenn\u00e9 poznatky o vlivu Pinealonu na kognitivn\u00ed a neurologick\u00e9 funkce (2,6).<\/p>\n

Jedna z nejv\u00fdznamn\u011bj\u0161\u00edch studi\u00ed byla provedena Arutjunjanem a jeho spolupracovn\u00edky s vyu\u017eit\u00edm potkan\u00edho modelu prenat\u00e1ln\u00ed hyperhomocystein\u00e9mie, stavu zn\u00e1m\u00e9ho negativn\u00edm vlivem na kognitivn\u00ed v\u00fdvoj a zv\u00fd\u0161en\u00edm hladiny oxida\u010dn\u00edho stresu (2). V\u011bdci hodnotili kognitivn\u00ed funkce pomoc\u00ed Morrisova vodn\u00edho testu, co\u017e je b\u011b\u017en\u011b pou\u017e\u00edvan\u00e1 experiment\u00e1ln\u00ed metoda pro hodnocen\u00ed prostorov\u00e9ho u\u010den\u00ed a pam\u011bti. Zv\u00ed\u0159ata vystaven\u00e1 prenat\u00e1ln\u00ed hyperhomocysteinemii dosahovala hor\u0161\u00edch v\u00fdsledk\u016f, plavala pomaleji a pot\u0159ebovala v\u00edce \u010dasu k nalezen\u00ed skryt\u00e9 platformy v porovn\u00e1n\u00ed se zdravou kontroln\u00ed skupinou.<\/p>\n

Nicm\u00e9n\u011b potomstvo matek l\u00e9\u010den\u00fdch Pinealonem vykazovalo v\u00fdznamn\u00e9 zlep\u0161en\u00ed kognitivn\u00edch funkc\u00ed (2). Tato zv\u00ed\u0159ata se vyzna\u010dovala lep\u0161\u00ed prostorovou orientac\u00ed, vy\u0161\u0161\u00ed schopnost\u00ed u\u010den\u00ed, rychlej\u0161\u00edm nalezen\u00edm platformy a v\u00fdsledky bli\u017e\u0161\u00edmi t\u011bm pozorovan\u00fdm u zdrav\u00fdch kontroln\u00edch jedinc\u016f. Toto zlep\u0161en\u00ed nastalo navzdory p\u0159etrv\u00e1vaj\u00edc\u00ed zv\u00fd\u0161en\u00e9 hladin\u011b homocysteinu, co\u017e nazna\u010duje, \u017ee \u00fa\u010dinek Pinealonu souvisel p\u0159\u00edmo s neuroprotektivn\u00edmi \u00fa\u010dinky, nikoli s korekc\u00ed z\u00e1kladn\u00ed metabolick\u00e9 poruchy.<\/p>\n

Auto\u0159i studie dosp\u011bli k z\u00e1v\u011bru, \u017ee Pinealon zlep\u0161uje efektivitu u\u010den\u00ed a pam\u011b\u0165ov\u00e9 funkce t\u00edm, \u017ee zvy\u0161uje odolnost neuron\u016f v\u016f\u010di oxida\u010dn\u00edmu stresu a omezuje po\u0161kozen\u00ed bun\u011bk v rozv\u00edjej\u00edc\u00edm se mozku (2). Peptid rovn\u011b\u017e sni\u017eoval akumulaci ROS a chr\u00e1nil neurony moze\u010dku p\u0159ed oxida\u010dn\u00edm po\u0161kozen\u00edm, \u010d\u00edm\u017e poskytoval biologick\u00e9 vysv\u011btlen\u00ed pozorovan\u00e9ho zlep\u0161en\u00ed kognitivn\u00edch funkc\u00ed.<\/p>\n

D\u016fkazy poch\u00e1zej\u00edc\u00ed z model\u016f Alzheimerovy choroby d\u00e1le podporuj\u00ed mo\u017enou roli Pinealonu v udr\u017eov\u00e1n\u00ed kognitivn\u00edch funkc\u00ed. Pozorovan\u00e9 obnoven\u00ed spr\u00e1vn\u00e9 denzity dendritick\u00fdch trn\u016f v neuronech hipokampu m\u016f\u017ee p\u0159isp\u00edvat ke zlep\u0161en\u00ed synaptick\u00e9 komunikace a pam\u011b\u0165ov\u00fdch proces\u016f, jeliko\u017e tyto struktury hraj\u00ed kl\u00ed\u010dovou roli p\u0159i u\u010den\u00ed a ukl\u00e1d\u00e1n\u00ed informac\u00ed (5). Zachov\u00e1n\u00ed dendritick\u00fdch trn\u016f je \u010dasto spojov\u00e1no s vy\u0161\u0161\u00ed neuroplasticitou a lep\u0161\u00ed odolnost\u00ed kognitivn\u00edch funkc\u00ed v\u016f\u010di proces\u016fm st\u00e1rnut\u00ed a neurodegenerace.<\/p>\n

Obecn\u00e1 data nazna\u010duj\u00ed, \u017ee Pinealon m\u016f\u017ee podporovat mnoho aspekt\u016f kognitivn\u00edch funkc\u00ed, v\u010detn\u011b schopnosti u\u010den\u00ed, formov\u00e1n\u00ed pam\u011bti, prostorov\u00e9 orientace, synaptick\u00e9 integrity a neuron\u00e1ln\u00ed adaptace. Tyto \u00fa\u010dinky se zdaj\u00ed b\u00fdt zp\u016fsobeny sou\u010dinnost\u00ed antioxida\u010dn\u00ed aktivity, neuroprotekce, podpory p\u0159e\u017eit\u00ed neuron\u016f a regulace gen\u016f zapojen\u00fdch do fungov\u00e1n\u00ed mozku (1\u20136).<\/p>\n

A\u010dkoli se v hodnocen\u00edch u\u017eivatel\u016f \u010dasto objevuj\u00ed zpr\u00e1vy o zlep\u0161en\u00e9 koncentraci, v\u011bt\u0161\u00ed du\u0161evn\u00ed jasnosti, lep\u0161\u00ed kvalit\u011b sp\u00e1nku nebo \u017eiv\u011bj\u0161\u00edch snech, tato pozorov\u00e1n\u00ed dosud nebyla potvrzena v rozs\u00e1hl\u00fdch, kontrolovan\u00fdch klinick\u00fdch studi\u00edch. Z\u00e1v\u011bry o vlivu pinealonu na kognitivn\u00ed funkce by proto m\u011bly b\u00fdt v sou\u010dasn\u00e9 dob\u011b zalo\u017eeny p\u0159edev\u0161\u00edm na v\u00fdsledc\u00edch experiment\u00e1ln\u00edch a preklinick\u00fdch studi\u00ed, nikoli na prok\u00e1zan\u00fdch klinick\u00fdch \u00fa\u010dinc\u00edch.<\/p>\n

Stresem oksydacyjnym, procesami starzenia si\u0119 lub zaburzeniami neurologicznymi. P\u0159esto jsou zapot\u0159eb\u00ed dal\u0161\u00ed klinick\u00e9 studie na lidech, aby se p\u0159esn\u011b ur\u010dilo, jak dob\u0159e tyto v\u00fdsledky p\u0159isp\u00edvaj\u00ed ke skute\u010dn\u00e9mu kognitivn\u00edmu prosp\u011bchu.<\/p>\n

Zastrze\u017cenie<\/h3>\n

Obsah tohoto \u010dl\u00e1nku m\u00e1 v\u00fdhradn\u011b vzd\u011bl\u00e1vac\u00ed a informa\u010dn\u00ed charakter a vych\u00e1z\u00ed z dostupn\u00fdch v\u011bdeck\u00fdch publikac\u00ed. Nep\u0159edstavuje l\u00e9ka\u0159skou radu, diagn\u00f3zu ani terapeutick\u00e9 doporu\u010den\u00ed. Pinealon nebyl schv\u00e1len americkou \u00da\u0159adem pro kontrolu potravin a l\u00e9\u010div (FDA) k l\u00e9\u010db\u011b, prevenci ani diagnostice jak\u00e9koli nemoci. V\u011bt\u0161ina dostupn\u00fdch \u00fadaj\u016f poch\u00e1z\u00ed z laboratorn\u00edch studi\u00ed, studi\u00ed na zv\u00ed\u0159atech a omezen\u00fdch studi\u00ed na lidech, proto jsou nezbytn\u00e9 dal\u0161\u00ed klinick\u00e9 studie k pln\u00e9mu pochopen\u00ed mechanism\u016f \u00fa\u010dinku a k posouzen\u00ed bezpe\u010dnosti a \u00fa\u010dinnosti tohoto peptidu. V\u00fdzkumn\u00e9 produkty obsahuj\u00edc\u00ed Pinealon, nab\u00edzen\u00e9 dodavateli, jako je Semax Polska, jsou ur\u010deny v\u00fdhradn\u011b pro laboratorn\u00ed a v\u011bdeck\u00e9 \u00fa\u010dely. Nejsou ur\u010deny k pou\u017eit\u00ed u lid\u00ed ani k terapeutick\u00fdm \u00fa\u010del\u016fm.<\/p>\n

Odkazy<\/h4>\n

(1)<\/strong> Khavinson, V., Ribakova, Y., Trofimova, S. a kol. (2011). Pinealon zvy\u0161uje \u017eivotaschopnost bun\u011bk potla\u010den\u00edm hladiny voln\u00fdch radik\u00e1l\u016f a aktivac\u00ed prolifera\u010dn\u00edch proces\u016f. Rejuvenation Research, 14(5), 517\u2013523.<\/span>
Odkaz na den\u00edk: https:\/\/journals.sagepub.com\/doi\/abs\/10.1089\/rej.2011.1172<\/a><\/span><\/p>\n

(2)<\/strong> Arutjunyan, A. V., Kozina, L. S., Stvolinsky, S. L., Bulygina, E. R., Mashkina, A. P., & Khavinson, V. K. (2012). Pinealon chr\u00e1n\u00ed potkan\u00ed potomstvo p\u0159ed prenat\u00e1ln\u00ed hyperhomocysteinemi\u00ed. International Journal of Peptides, 2012, 109757.<\/span>
DOI:10.1155\/2012\/109757 <\/a><\/span>Cel\u00fd text PMC: https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3342713\/<\/a><\/span><\/p>\n

(3)<\/strong> Fedoreyeva, L. I., Kireev, I. I., Khavinson, V. K., & Vanyushin, B. F. (2011). Penetrace kr\u00e1tk\u00fdch fluorescen\u010dn\u011b zna\u010den\u00fdch peptid\u016f do j\u00e1dra v bu\u0148k\u00e1ch HeLa a specifick\u00e1 in vitro interakce peptid\u016f s deoxyribooligonucleotidy a DNA. Biochemistry (Moscow), 76(11), 1210\u20131219.<\/span>
Odkaz na den\u00edk: https:\/\/link.springer.com\/article\/10.1134\/S0006297911110022<\/a><\/span><\/p>\n

(4)<\/strong> Khavinson, V. K., Lin\u2019kova, N. S., Tarnovskaya, S. I., Umnov, R. S., Elashkina, E. V., & Durnova, A. O. (2014). Kr\u00e1tk\u00e9 peptidy stimuluj\u00ed expresi serotoninu v bu\u0148k\u00e1ch mozkov\u00e9 k\u016fry. Bulletin of Experimental Biology and Medicine, 157(1), 77\u201380.<\/span>
PubMed: https:\/\/pubmed.ncbi.nlm.nih.gov\/24909721\/<\/a><\/span><\/p>\n

(5)<\/strong> Kraskovskaya, N. A., Kukanova, E. O., Lin\u2019kova, N. S., Popugaeva, E. A., & Khavinson, V. K. (2017). Tripeptidy obnovuj\u00ed po\u010det neuron\u00e1ln\u00edch trn\u016f v podm\u00ednk\u00e1ch in vitro modelovan\u00e9ho Alzheimerova onemocn\u011bn\u00ed. Bulletin of Experimental Biology and Medicine, 163(4), 547\u2013550.<\/span>
PubMed: https:\/\/pubmed.ncbi.nlm.nih.gov\/28853087\/<\/a><\/span><\/p>\n

(6)<\/strong> Khavinson, V., Ilina, A., Kraskovsk\u00e1, N., Linkov\u00e1, N., Kolchinov\u00e1, N., Mironovov\u00e1, E., Jerofejew, A. & Petuchov, M. (2021). Neuroprotektivn\u00ed \u00fa\u010dinky tripeptid\u016f \u2013 epigenetick\u00fdch regul\u00e1tor\u016f v my\u0161\u00edm modelu Alzheimerovy choroby. Pharmaceuticals, 14(6), 515.<\/span>
Odkaz na den\u00edk: https:\/\/www.mdpi.com\/1424-8247\/14\/6\/515<\/a><\/span><\/p>","protected":false},"excerpt":{"rendered":"

Pinealon je bioregula\u010dn\u00ed peptid, kter\u00fd v experiment\u00e1ln\u00edch studi\u00edch vykazuje potenci\u00e1l v oblasti ochrany neuron\u016f, regulace bun\u011b\u010dn\u00fdch proces\u016f a podpory zdrav\u00e9ho st\u00e1rnut\u00ed. Vzhledem k vicestrann\u00fdm mechanism\u016fm\u2026<\/p>","protected":false},"author":7908,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[253],"tags":[],"class_list":["post-49667","post","type-post","status-publish","format-standard","hentry","category-kategoria-pinealon","beh-no-thumb"],"_links":{"self":[{"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/posts\/49667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/users\/7908"}],"replies":[{"embeddable":true,"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/comments?post=49667"}],"version-history":[{"count":0,"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/posts\/49667\/revisions"}],"wp:attachment":[{"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/media?parent=49667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/categories?post=49667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bioevidencehub.com\/cs\/wp-json\/wp\/v2\/tags?post=49667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}