Kusiyana kunoita methylene blue nemaantioxidant akajairika

Antioxidant yakajairika inosangana neradical rakasununguka kamwe chete. Inopa erekitironi, inopedza kushanda kweradical rairi kunanga, yobva yapera. Kuverenga kwacho ndekwechimwe nechimwe, uye kudzivirira kunomira kana zviripo zvapera.

Methylene blue haishandi nenzira iyoyo. Inogamuchira maerekitironi, yoapfuudzira, yodzokera pachimiro chayo chepakutanga yakagadzirira kutenderera zvakare. Morekuru rimwe chete rinogona kushanda kane zviuru. Musiyano iwoyo unotsanangura simba rayo pamadosi akaderera uye kukundikana kwayo kunotidzidzisa zvakanyanya. Zvinotevera zvinoenzanisa nzira mbiri idzi dzokushanda kuburikidza nezvidzidzo zvitatu zvakabudiswa, zvichiramba zvichifunga nezvemhedzisiro isina kuratidza shanduko.

Mutakuri anopfuudzira, kwete chipanji

Panyaya yemakemikari, pane zvimiro zviviri zvinogona kuchinjana zvichidzokerana. Methylene blue yakaitwa oxidation ine ruvara rwebhuruu, ine chaji, uye inonyungudika mumvura. Methylene blue yakaitwa reduction, inonzi leuco-methylene blue, haina ruvara, haina chaji, uye inonyungudika mumafuta zvakakwana kuti ipfuure nemumamembrane zvakasununguka. Mukati memitochondrion, dhayi yakaitwa oxidation inotora maerekitironi kubva kuvatakuri vakabatana neNADH vari kumavambo enzira, yoaendesa kucytochrome c necomplex IV zviri kumagumo enzira. Izvi zvinodarika macomplex I kusvika III, anova nzvimbo dzinowanzobuda maerekitironi achienda kuoxygen oita superoxide. Dhayi inobuda yaitwa oxidation yodzokorora kutenderera uku. Mashandiro ezvimiro zviviri izvi anotsanangurwa munyaya inotsanangura kuti methylene blue inoshanda sei.

Chinhu chinobvisa maradical zvakananga chinoshanda mushure menzvimbo yabuda maerekitironi. Chinomirira kuti superoxide kana peroxide iumbwe, chozopedza kushanda kwayo, morekuru rimwe par radical rimwe. Chinhu chinotenderera mu redox chinoshanda pasati pabuda maerekitironi, chichitsausa mafambiro awo kuitira kuti superoxide shoma iumbwe, chisina kupedzwa. Kuverenga kwemadosi kunotevera izvi: muzvidzidzo zviri pasi apa, methylene blue inoshanda pedyo ne100 nanomolar, asi chinobvisa maradical chakajairika chinoda 100 micromolar.

Zvisinei, mutakuri anopfuudzira haaiti chinhu ari oga. Zvaanoita zvinoenderana nevanopa nevanogamuchira kumativi ose enzira. Kana mamiriro acho akachinja, morekuru rimwe chetero rinogona kudzivirira, kusabatsira, kana kusava nechokuita nechiri kuitika.

Masero etsinga: kudzivirira kunoda mamitochondria ari kushanda

Kuongorora kwakanyatsoparadzanisa mashandiro aya kunobva muchidzidzo cheukama pakati pechimiro nekushanda mumasero etsinga ehippocampus eHT-22. Chakaedza methylene blue nemakemikari matanhatu ane hukama nayo pazvinhu zvina zvinokuvadza masero (Poteet nevamwe, 2012). Pakuedzwa neglutamate, rotenone (inovhara complex I), uye iodoacetate, dhayi yakadzivirira pamwero wenanomolar. Pakuedzwa neglucose oxidase, inogadzira hydrogen peroxide zvakananga mumvura inokurirwa masero, haina kuita chinhu kubva pa10 nanomolar kusvika pa10 micromolar, asi pyruvate, chinhu chiri nyore chinobvisa maradical, yakadzivirira. Kana kukuvara kuchibva pakukanganisika kwecheni yekufambisa maerekitironi, mutakuri anobatsira. Kana peroxide yatoumbwa kunze kwesero, hapana chaanogona kutakura.

Chidzidzo chimwe chetecho chakaratidza chikonzero chacho. Pakuedza zvinhu zvakabva mumamitochondria akaputswa, makemikari maviri ane hukama nemethylene blue asi asina maketani eparutivi panzvimbo 3 ne7, phenothiazine ne2-chlorophenothiazine, akashanda ega semaantioxidant akananga. Methylene blue haina kudaro. Yaingomisa oxidation kana paine zvose NADH nezvikamu zvemamitochondria zvisina kukanganisika. Nemamwe mashoko, yakanga isiri kubvisa maradical zvachose. Yakanga ichitakura maerekitironi ichiapfuudzira, uye mutakuri anoda zvose nzvimbo yokutorera mutoro nenzvimbo yokuusvitsa.

Zvimwe zvinhu zviviri zvinowedzera kujeka. Kuwedzera ketani yeparutivi panitrogen iri muringi panzvimbo 10 kwakaderedza simba rokudzivirira nekanenge chiuru, zvichiratidza kuti nitrogen yakasununguka inokosha pakutenderera uku kwemakemikari. Uye kusangana nedhayi kwenguva refu kwakawedzera kugadzirwa nekushanda kwecomplex IV, kuchinja kusina kukonzerwa nemakemikari ane hukama nayo aibvisa maradical zvakananga. Mamwe mashoko ane hukama nokufambiswa kwemaerekitironi mumamitochondria anopa hwaro hwokutonga zvinotaurwa nezvemaantioxidant.

Masero eganda: kuenzanisa kwakananga kunokundwa nemethylene blue

Chimwe chidzidzo chakaenzanisa methylene blue nemaantioxidant matatu anozivikanwa, chichishandisa mafibroblast eganda remunhu akatorwa zvakananga kubva kuvanopa vane utano, varwere veprogeria, uye vanopa vane makore anopfuura 80 (Xiong nevamwe, 2017). Kwemavhiki mana, methylene blue yakashandiswa pa100 nanomolar, N-acetylcysteine pa100 micromolar, uye MitoQ nemito-TEMPO pa100 nanomolar chimwe nechimwe.

Mhedzisiro yacho yakanga isina kufanana. Methylene blue yakaderedza superoxide yemumamitochondria uye yakatsigira kuwanda kwemasero mumapoka ose emasero. N-acetylcysteine haina kuderedza ROS yemumamitochondria uye yaiita sokuti yainonotsa kuwanda kwemasero. MitoQ, padosi raiwanzo shandiswa mutsvakurudzo dzakabudiswa, yakawedzera zvikuru ROS yemumamitochondria uye yakadzivisa kuwanda kwemasero. Mito-TEMPO yakaratidza kubatsira kuri pakati nepakati mune mamwe mapoka emasero. Pazvinhu zvina izvi, chinotenderera chichishanda secatalyst ndicho chakanyanya kushanda, uye antioxidant yainanga nzvimbo yakati ichishanda pareshiyo yemorekuru rimwe kune rimwe yakatowedzera kuipa kupfuura kusaisa chinhu, kunyanya pakusangana kwemwedzi mumamiriro aya.

Vanyori vakaratidza kuti kureba kwenguva yokusangana kungangova tsananguro, sezvo kusangana neMitoQ kwenguva pfupi kune dzimwe tsvakurudzo kwakaita sokunge kwaibudisa mhedzisiro iri nani. Yambiro iyoyo inoshandawo kune zvimwe: maantioxidant anoshanda pareshiyo yemorekuru rimwe kune rimwe anopera, uye zvinhu zvinobva pakuputsika kwawo zvinogona kuva nezviito zvisingadiwi kana masero akaramba ari mumamiriro ekukura kwenguva refu. Catalyst haiperi.

Chirongwa chimwe chetecho chakaendererawo kuganda remunhu rakavakwa patsva mu3D, uko methylene blue padosi rakaderera yakakobvudza dermis, yakavandudza huwandu hwemvura muganda, yakawedzera elastin necollagen 2A1, yakadzvinyirira MMP9, uye yakakurumidzisa kuvharika kwemaronda. Izvi zvinokurudzira, asi zvine chokuita neganda, uye ganda harisi pfupa.

Mapfupa: tariro yakaonekwa mumudziyo wemasero ikanyangarika mumhuka

Chidzidzo chokuchembera kwemapfupa chinoratidza rimwe divi rakasiyana zvikuru (Poudel nevamwe, 2024). Mumasero akakurirwa murabhoritari, methylene blue neMitoQ zvose zvakadzivisa kuumbwa kweosteoclast pamwero waipfuura 0.25 micromolar, kudzivisa kuchiwedzera nedosi, zvisina kukanganisa kurarama kwemastem cell kana kuumbwa kweosteoblast. Achingotarisa zvikamu izvozvo zvemhedzisiro chete, muongorori aizotarisira mapfupa akasimba mumhuka dzapiwa zvinhu izvi.

Mhedzisiro yemhuka haina kuwirirana nazvo. Mbeva hadzi dzakwegura dzeC57BL/6J dzakapiwa 250 micromolar yemethylene blue mumvura yokunwa kwemwedzi 6 kana 12. Mbeva dzeUM-HET3 dzakasiyana-siyana dzakapiwa 28 ppm yemethylene blue muchikafu kubva pamwedzi 7 kusvika 22, kana 100 ppm yeMitoQ kubva pamwedzi 4 kusvika 22. Kuongorora neMicro-CT chikamu chekunze chakakora nechomukati chine maburi zvepfupa rechidya pamwe nemapfupa emuzongoza ezasi kwakaratidza kuti kurasikirwa kwepfupa kunoenderana nezera kwakaenderera zvakafanana mumapoka akapiwa zvinhu izvi nemapoka ekuenzanisa. Marudzi maviri embeva, nzira mbiri dzokupa, maantioxidant maviri, mwedzi yokusangana nazvo, pasina shanduko pamapfupa.

Mhedziso yevanyori iri pachena: kuderedza kushushikana kunokonzerwa neoxidation neantioxidant yoga kunoratidzika kusina kukwana kuti kunonotse kuchembera kwemapfupa. Kurasikirwa kwepfupa kunobatanidza mahormone, mutoro unotakurwa nemapfupa, kuzvimba, uye kubviswa kwemasero achembera asingachapatsanuriki. Kugadzirisa kubuda kwemaerekitironi kunogadzirisa chinhu chimwe chete pazvizhinji, uye pano zvimwe ndizvo zvakanyanya kutonga. Mashoko pamusoro pekuti nzira dzinoshandisa maantioxidant dzakafamba sei pakuedzwa pazviratidzo zvokuchembera anopa mamiriro okunzwisisa kusavapo kweshanduko uku.

Kuverenga zvidzidzo zvitatu pamwe chete

Pane maitiro matatu anoramba achienderana nezvidzidzo zvose zvitatu.

Chekutanga, nzira yokushanda inofanotaura muganhu. Methylene blue inobatsira apo maerekitironi ari kufambiswa nenzira isiri iyo mukati memamitochondria uye mutakuri anogona kuadzosera panzira. Inokundikana apo zvinhu zvinokonzera oxidation zvakatoumbwa uye zviri kure necheni yacho. Kusavapo kweshanduko pakuedza glucose oxidase uye pamapfupa hazvisi zvinhu zvinonyadzisa zvinofanira kutsanangurwa zvichibviswa parutivi. Zvinoratidza dzidziso yacho ichishanda sezvainotaura.

Chechipiri, kuverenga kwekushanda secatalyst kunokunda kuverenga kwekushanda pareshiyo yemorekuru rimwe kune rimwe pakusangana kwenguva refu. Morekuru risingapedzwi rinoramba richishanda pamwero wenanomolar kwemavhiki, asi zvinhu zvinobvisa maradical kamwe chete zvinoda madosi anosvika zana remicromolar uye zvinogona kushanduka zvichikuvadza kana masero akaramba ari mumamiriro ekukura kwenguva refu.

Mashoko pamusoro pedosi, nzira yokusangana nechinhu, uye kugoverwa kwacho mumatishu anotsanangura chimwe chikonzero nei chinhu chinokunda pamwero wenanomolar mumasero akakurirwa murabhoritari chingazotadza kuratidza shanduko mumuviri mupenyu.

Kuvanoshanda mukurapa nevatsvakurudzi, mhedziso yacho ine muganhu asi yakasimba. Methylene blue haisi antioxidant ine simba guru chete, asi iri muboka rakasiyana: mutakuri anogona kudzokera pachimiro chake, anoda mamitochondria asina kukanganisika, vanopa maerekitironi varipo, uye mugamuchiri ari kumagumo enzira. Ongorora kushandiswa kupi nokupi kunenge kwafungwa nokubvunza kana nzira iyoyo iripo mutishu inenge yakanangwa, uye nokuda kuti paitwe bvunzo yokuenzanisa yakaitwa muchidzidzo chaPoteet: kuyedza neperoxide zvakananga, bvunzo inopfuudzwa nechinhu chinobvisa maradical zvechokwadi asi iyo mutakuri anofanira kutadza. Ndokusakawo kuenzanisa kunotungamirirwa nevatsvakurudzi kwemakemikari anoshanda mu redox kuchiramba kuchidzokera kumiedzo yokuenzanisa zvakananga.

Zvinyorwa zvakashandiswa

Kuenzanisa kutatu kuri pamusoro kunobva muchidzidzo cheukama pakati pechimiro nekushanda kwemethylene blue nemakemikari matanhatu akabva pairi mumasero etsinga, kuenzanisa maantioxidant mana mumafibroblast eganda remunhu nemamodheru eganda e3D, uye chidzidzo chenguva refu chemethylene blue neMitoQ pakuchembera kwemapfupa mumarudzi maviri embeva. Nyaya ino inotaura zvavakawana uye haipe mazano okurapa.