Michael Zhou는 52세입니다. 작년 회사 건강 검진에서 그의 혈액 보고서에 호모시스테인이라는 숫자가 표시되었습니다.  

18.6 μmol/L - 기준 범위 초과. His doctor said it was linked to cardiovascular risk and suggested a daily folate supplement. 그래서 그는 정확히 그렇게 했습니다.  

0.4 mg. One tablet a day. Six straight months. 후속 테스트에서 그 수치는 18.2였다. Down by 0.4 — clinically speaking, almost no change at all.

Michael could not understand it. He had taken folate on schedule. His lifestyle had not gotten worse. Yet the number seemed stuck, as if something in the system simply would not move.

나중에 그의 의사는 접근 방식을 바꾸었습니다. 즉, 엽산 복용을 중단하고 과학적으로 6S-5-메틸테트라히드로엽산으로 알려진 활성 엽산으로 전환했습니다. 마이클은 그 차이를 실제로 이해하지 못했습니다. 그가 아는 ​​것은 6개월 동안 보충제를 섭취한 후에는 아무 일도 일어나지 않은 것처럼 느껴졌다는 것뿐이었습니다.

▍72 patients, 15 mg active folate per day, three months

"보충되었지만 거의 그렇지 않은 것처럼"이라는 혼란은 2006년 Journal of Cardiovasive Pharmacology에 발표된 무작위 대조 임상 시험에 의해 적어도 부분적으로 해결되었습니다. 이 연구에는 중등도 고호모시스테인혈증 환자 72명이 등록되었습니다. 면역 질환이 있는 사람, 암 병력, 만성 신부전증이 있는 사람은 제외되었습니다. After enrollment, participants were randomly assigned into two groups. The treatment group took 15 mg of 6S-5-methyltetrahydrofolate daily for three months.

3개월 후, 치료군에서 한 가지 주요 변화가 나타났습니다. 즉, 혈장 총 글루타티온(GSH)이 감소했습니다.  P = 0.002.

▍GSH went down, but the redox state moved closer to balance

GSH is one of the body’s most important reducing antioxidants. When people see it drop, the usual assumption is simple: oxidative damage has increased, and GSH is being heavily consumed. But the researchers reached the opposite conclusion. 핵심은 동일한 대사 분기점에 있습니다.

Homocysteine, or Hcy, has two main routes in the body. One is the remethylation pathway: with methyl groups supplied by 5-MTHF, Hcy is converted back into methionine. The other is the transsulfuration pathway: Hcy is converted through enzyme-driven reactions into cysteine, an essential raw material for GSH synthesis.

Think of it as a fork in the road. When 5-MTHF is sufficient, more Hcy moves into the remethylation lane. Fewer “cars” enter the transsulfuration lane. With less raw material flowing downstream, the total amount of GSH produced also falls.

At the same time, Hcy itself drops sharply, reducing oxidative stimulation of the vascular endothelium. GSH is called on less often to clear free radicals.

원자재가 적습니다. 소비가 적습니다.  The number falls, but the system is under less strain. That is not a sign of deterioration. It suggests the body has shifted into a more balanced state as the burden eases.

▍A 52-fold concentration change points to a bioavailability gap

At the end of the three-month treatment period, serum folate levels in the 5-MTHF group rose from 4.4 μg/L to 230.0 μg/L.  P < 0.0001. That is roughly a 50-fold increase. The control group showed only limited change over the same period.

This gap tells us something important: once 5-MTHF enters the body, it does not need to go through the MTHFR enzyme reduction step. It enters the folate metabolic pathway directly in its active form and can be rapidly absorbed and used by tissues. That helps explain a clinical pattern doctors do see from time to time.

일부 환자는 오랫동안 엽산을 복용합니다. Their serum folate levels rise, but homocysteine still does not come down. The reason is that after folic acid enters the body, it must go through multiple reduction steps involving dihydrofolate reductase and the MTHFR enzyme before it can become truly bioactive 5-MTHF. If MTHFR enzyme activity is low, that conversion chain may never reach the finish line. It is like a production line with piles of parts at the entrance, but one machine in the middle is running too slowly. No matter how much material comes in, finished output stays low.

The raw material piles up at the front.  The end user never gets enough supply.

▍In the Chinese population, one in four people may face this enzyme bottleneck

A 2013 study published in PLoS ONE, involving 15,357 adults, found clear regional differences in the distribution of the MTHFR C677T homozygous mutation, or TT genotype, among Han Chinese populations. In some northern provinces, the TT carrier rate exceeded 25%. In people with the TT genotype, MTHFR enzyme activity is roughly half that of people with the normal CC genotype. This means that for a sizable portion of the population, even regular daily folic acid supplementation may deliver far less usable folate to the metabolic endpoint than expected. For these people, taking 6S-5-methyltetrahydrofolate directly is like bypassing the traffic jam in the middle of the route.

▍Choosing an active folate ingredient: three things to check

6S-5-메틸테트라히드로엽산 성분을 선택할 때 몇 가지 사항이 중요합니다. First, whether the configuration is pure 6S. 5-MTHF exists in two configurations, 6S and 6R. Only the 6S form is biologically active. 둘째, 칼슘염으로 안정화되어 보관 및 가공과정에서 열화를 방지하는 데 도움이 되는지 여부. 셋째, 생산 과정에서 독성 불순물 잔류물이 얼마나 잘 통제되는지입니다.

마그나폴레이트는 이러한 조건을 충족하는 원료 중 하나입니다. 이는 6S-5-메틸테트라히드로엽산의 칼슘염 형태를 사용하며 구성 순도 및 안정성을 위한 해당 품질 관리 시스템을 갖추고 있습니다. 이는 여기에 인용된 임상 시험에 사용된 5-MTHF와 동일한 활성 엽산 범주에 속합니다. 생체 이용률 프로필은 엽산 대사의 마지막 단계의 효율성을 향상시키는 데 도움이 될 수 있습니다.

▍Michael later took a different route

의사의 조언에 따라 Michael은 엽산을 6S-5-메틸테트라히드로엽산이 함유된 보충제로 바꿨습니다. He made no other lifestyle changes. 3개월 후, 그의 호모시스테인 수치는 12.4μmol/L로 떨어졌습니다. Back within the normal range. 6개월 동안 거의 움직이지 않던 숫자가 형태가 바뀌자 3개월 만에 내려왔다.

▍Form may matter more than dose

The standard intervention for hyperhomocysteinemia is folate plus B vitamins. Most guidelines recommend folic acid, which is effective and economical for people with normal MTHFR enzyme activity. But for people with significantly reduced enzyme activity, simply increasing the dose of folic acid does not solve the problem of insufficient supply at the end of the conversion chain. 모든 사람이 이 전환을 할 필요는 없습니다. But if someone has been taking folate consistently and homocysteine remains high, active folate is a form worth discussing with a doctor.

이 하위 그룹의 경우 단순히 더 많은 용량을 추가하는 것보다 올바른 형태를 일치시키는 것이 더 중요할 수 있습니다.

참고자료:

[1] Antoniades C, Shirodaria C, Warick N, 외. Homocysteine lowering by 5-methyltetrahydrofolate: effects on redox status in hyperhomocysteinemia[J]. Journal of Cardiovascular Pharmacology, 2006, 47(5): 677-682.

[2] 양 B, Liu Y, Li Y, 외. 중국 내 MTHFR C677T, A1298C 및 MTR A66G 유전자 다형성의 지리적 분포: 한 국적 성인 15,357명에 대한 조사 결과[J]. PLoS ONE, 2013, 8(3): e57917. doi:10.1371/journal.pone.0057917.

[3] Lian Zenglin, Liu Kang, Gu Jinhua, Cheng Yongzhi 등. Biological characteristics and applications of folate and 5-methyltetrahydrofolate. China Food Additives, 2022, Issue 2.

Risk Notice:

마그나폴레이트^®활성엽산 원료인 칼슘 6S-5-메틸테트라히드로폴레이트로만 공급되며 소비자에게 직접 판매되지 않습니다. Any diagnostic or treatment-related content in this article comes from a fictional case and is intended only to help readers understand the scientific mechanism. 엽산 보충에 대한 결정은 자격을 갖춘 의사나 영양사의 지도하에 이루어져야 합니다. 이야기에 사용된 사례 데이터는 일반적으로 볼 수 있는 임상 참조 범위에 속합니다. 이 기사의 모든 인과적 해석은 인용 문헌에 의해 뒷받침되는 결론으로 ​​엄격히 제한되며 모든 제품에 대한 효능을 약속하지 않습니다.