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Longevity

Vitamin Kelonggaran Jamur Nambah NAD+ ing Tikus Tua liwat Saklar H₂S

Helix Ward · · 4 min read
#longevity #healthspan #nad+ #ergothioneine #mushrooms #hydrogen sulfide #muscle aging

Vitamin Kelonggaran Jamur Nambah NAD+ ing Tikus Tua liwat Saklar H₂S

Yen panjenengan wis ngonsumsi NMN utawa NR kanggo njaga tingkat NAD+ ing awak, saiki ana senyawa jamur sing patut diparingi perhatian. Artikel anyar ing Cell Metabolism nglaporaké manawa ergothioneine (ET) bisa nambah NAD+ ing otot lan ngembangaké daya tahan treadmill ing tikus tuwa. Mekanisme iki dumadi liwat jalur hidrogen sulfida sing sadurungé durung kawentar. Cathetan penting: iki isih studi hewan lan laboratorium, dudu uji klinis manungsa.

Apa kuwi ergothioneine, lan kenapa dijuluki "vitamin kelonggaran"?

Ergothioneine (ET) yaiku turunan asam amino sing ngandhut sulfur (thione) lan ora bisa diprodhuksi dening awak manungsa. Kita entuk ET saka panganan, lan jamur dadi sumber paling akèh. Awak nduwèni transporter khusus kanggo ngangkut ET, mula sawetara peneliti mènèhi julukan "vitamin kelonggaran". Yen organisme ora nduwèni fungsi kanggo molekul tartamtu, ora bakal ana gene sing ngode transporter kasebut.

Senyawa iki wis suwe dipelajari minangka anti‑oksidan lan sitoprotektan. Karya paling anyar saka grup Milos Filipović lan kolaboratoré, kalebu Michael Murphy, nuduhaké yèn ET uga bisa dadi tuas sinyal, sing dadi titik menarik kanggo para bio‑hacker.

Hasil saka cacing: umur luwih dawa, mobilitas luwih apik

Peneliti miwiti percobaan nganggo C. elegans, cacing bundar sing dadi model standar riset umur. ET nglantaraké umur sing luwih dawa lan ningkataké mobilitas ing cacing sing wis tuwa. Cacing sing diobati uga nuduhaké tahanan stres sing luwih apik lan biomarker umur sing luwih sithik.

Temuan ing cacing iku langkah wiwitan sing wajar, nanging ora bisa langsung dipundhutaké menyang mamalia. Ing kéné, asil iki dadi landhègan kanggo eksperimen ing tikus.

Hasil ing tikus tuwa: daya tahan, otot, lan NAD+

Ing tikus tuwa sing diwènèhi ET (lumantar banyu minum sajrone patang minggu), tim riset ngrekam:

  • Daya tahan olahraga sing luwih apik – tikus bisa mlayu luwih suwe lan luwih adoh ing treadmill.
  • Massa otot sing luwih akeh, sanajan mung mundhak sakedhik.
  • Vaskularisasi otot sing luwih gedhé, ateges luwih akèh pembuluh getih sing nyokong otot.
  • Tingkat NAD+ sing luwih dhuwur ing otot.

NAD+ penting kanggo fungsi mitokondria; kenaikan ing jaringan otot pas banget karo perbaikan daya tahan. Penulis nyambungaké temuan iki karo sarcopenia, yaiku penurunan massa otot amarga umur.

Saklar sing ndhelik, dijlentrehake nganggo basa pranyata

Mekanisme utama iki kapérang saka patang langkah:

  1. CSE nampa substrat anyar – Cystathionine γ‑lyase (CSE) biasané ngasilaké hidrogen sulfida (H₂S). ET dadi substrat alternatif kang ndorong produksi H₂S luwih dhuwur.
  2. H₂S nèmpél protein – H₂S maringi persulfidasi, modifikasi kimia sing nambah gugus sulfur marang résidu sistein lan ngowahi cara protein kerjane. Tim nemokaké luwih saka 300 target persulfidasi.
  3. cGPDH diaktifake – Salah siji target iku cytosolic glycerol‑3‑phosphate dehydrogenase (cGPDH), sing diaktifake dening persulfidasi. cGPDH dadi bagian saka shuttle sing mbantu ngowahi NADH dadi NAD+ ing sitoplasma.
  4. NAD+ munggah – Aktivasi cGPDH dianggep kontributor utama kenaikan NAD+ sing dipicu ET.

Bukti kunci yaiku tes knockout: nalika CSE utawa cGPDH diilangi, efek ET ilang. Iki nuduhaké yèn jalur iki pancèn dibutuhaké, ora mung kebetulan.

Kepiye iki dibandhingaké karo NMN lan NR?

NMN lan NR iku prekursor NAD+. Dheweke nyedhiyakake bahan mentah kanggo jalur salvage NAD+, dadi strategi kanggo menehi sel luwih akeh “blok bangunan”.

Ergothioneine, kosok baline, luwih mengarah menyang sinyal redoks sing ngaktifaké enzim daur ulang NAD+ tinimbang nambah substrat langsung. Saben pendekatan teoritis bisa saling melengkapi, nanging durung ana uji gabungan. Artikel iki ora nyedhiyakake perbandingan langsung karo NMN utawa NR, mula klaim yèn ET luwih apik, luwih ala, utawa sinergis tetep spekulatif.

Takeaway praktis kanggo sing penasaran

  • Sumber panganan – Jamur dadi pilihan utama, contoné oyster, king oyster, shiitake, lan porcini. Cilik ET uga ditemokaké ing kacang‑kacangan, oat bran, lan organ meat. Masak ora ngilangaké ET sacara signifikan.
  • Dosis suplemen – Produk ET komersial umume ngandhut 5 – 25 mg saben dina. Kedadeyan ing studi manungsa saiki nganggo rentang iki.
  • Dosis tikus lan terjemahanke manungsa – Miturut perkiraan Ergo‑Log, dosis sing dipigunakaké ing tikus diterjemahaké dadi 200 – 260 mg saben dina kanggo manungsa, watara sepuluh kaping luwih dhuwur tinimbang suplemen umum. Apa dosis iki aman lan efektif kanggo wong ora dingerteni. Ora ana bukti ing artikel iki yèn dosis 5‑25 mg bisa nambah NAD+ ing otot manungsa.

Cathetan penting: mung hewan, durung ana bukti manungsa

Aja cepet‑cepete nampa iki minangka fakta kanggo awakmu:

  • Ora ana data klinis manungsa – iki studi preklinis ing cacing, tikus, lan sel.
  • Dosis ora selaras – dosis sing efektif ing tikus, nalika dipindhahaké menyang manungsa, luwih dhuwur banget tinimbang suplemen standar.
  • Durasi pendek – efek jangka panjang, keamanan dosis dhuwur, lan pangaruh marang umur mamalia durung dibuktekaké.
  • NAD+ otot ora dadi bukti klinis – kenaikan NAD+ jaringan lan daya tahan treadmill ing tikus mung sinyal awal, dudu bukti yèn umur dadi luwih sehat ing manungsa.
  • Mekanisme dudu manfaat klinis – jalur iki dadi alesan kanggo nindakake uji klinis, dudu pangganti uji klinis.

Kesimpulan

Artikel iki maringi ergothioneine apa sing suwéné kurang: mekanisme konkret lan bisa diuji sing nyambungaké senyawa jamur diet menyang NAD+ liwat CSE, H₂S, persulfidasi, lan cGPDH. Iki langkah nyata ngluwihi label "anti‑oksidan". Mangan luwih akèh jamur yaiku pilihan risiko rendah saka sudut nutrisi umum. Apa ergothioneine bakal dadi intervensi NAD+ utawa anti‑penuaan otot sing teruji ing manungsa, gumantung marang uji klinis sing durung dilakokaké.

Original study

Read the original research on pubmed.ncbi.nlm.nih.gov →

This article summarizes published research for general information. It is not medical advice.

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Written by

Helix Ward

Helix Ward writes for Biocracked: biohacking science, longevity & human performance.

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