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なんでもほどほどに・・解毒フルーツ

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とはいえ、なんでもほどほどが一番・・

米フロリダ大(University of Florida)は9日、パパイアの葉のエキスと葉茶に著しい抗がん特性を認めたとする研究結果を発表した。頸部(けいぶ)がん、乳がん、肝臓がん、肺がん、すい臓がんで抗がん効果が確認されたという。

同大のナム・ダン(Nam Dang)研究員と日本の研究チームは、乾燥したパパイア葉から抽出したエキスを10種類のがん細胞に垂らし、24時間後に効果を調べた。

その結果、10種類すべてで腫瘍(しゅよう)の進行が遅くなっていたことがわかった。また、エキスの濃度が高いほど効果が高いことも明らかになった。

研究者らは、パパイア葉エキスがTh1型サイトカインと呼ばれるシグナリング分子の生産を促すことで、免疫系の調節を助けているためではないかと見ている。

このエキスは正常な細胞には危害を加えず、現行のがん治療における一般的な副作用を防げることも明らかになったため、免疫系に働きかけてがんを退治する新たな治療法への応用が期待されるという。

パパイアは、世界各地、特にアジアにおいて、さまざまな病気への民間療法のなかで使用されてきた。

詳しい研究内容は医学誌「Journal of Ethnopharmacology(民族薬理学)」2月号に掲載されている。(c)AFP

生のパパイヤを調べてみると・・・

パパイヤは栄養の宝庫!

ハワイのパパイヤの魅力は、そのおいしさだけではありません。
私たちの暮らしを健康的にサポートする豊富な栄養源を持ち合わせています。

パパイヤは、最も栄養価の高い果物の一つです。ワシントンD.C.に本部を置く消費者のための監視機関「公益科学センター」は、食品成分表に基づいて「ファンタスティック・フルーツ」というランキングを作成し、果物が含むビタミンC、葉酸、カリウム、鉄分、カルシウム、食物繊維、及びカロチノイドの6つの重要栄養素の一日の摂取量率を合計した得点で様々な果物を評価しました。すると、パパイヤは、今まで健康に良いとされていたオレンジ、りんご、バナナなどの得点を上回り、グアバ、スイカ、グレープフルーツ、キーウィと並んで見事にベスト5入りしました。

パパイヤに含まれるたんぱく質消化酵素であるパパインとキモパパインは、胃分泌を刺激し、消化を助けます。

また、低脂肪で食物繊維を多く含むパパイヤは、コレステロールを下げる効果があることも証明されています。抗酸化物質である3栄養素、ビタミンC、Eとベータカロチンも多く含み、コレステロール酸化を防止し、血管壁を破壊し最終的には心臓発作や心臓麻痺を引き起こす危険を抑えています。

パパイヤにはそのほかにも、カルシウム、カリウム、ビタミンAとBが豊富に含まれています。

ただし、パパイヤの摂取のしずぎは前立腺がんを引き起こす可能性もあると指摘されているそうですし、ラテックスアレルギーを持つ人にはNGだそうです。なんでもほどほどがいいんですね・・

ラテックスアレルギーについては下記を参照

http://www.geocities.jp/nayutav/latex.htm

参考 パパイヤの栄養

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たまにならいいんでしょ?パパイヤとチキンのサラダ作ろうか・・

UF researchers find cancer-fighting properties in papaya tea

Filed under Health, Research on Tuesday, March 9, 2010.

GAINESVILLE, FL. — The humble papaya is gaining credibility in Western medicine for anticancer powers that folk cultures have recognized for generations.

University of Florida researcher Dr. Nam Dang, and colleagues in Japan have documented papaya’s dramatic anticancer effect against a broad range of lab-grown tumors, including cancers of the cervix, breast, liver, lung and pancreas. The researchers used an extract made from dried papaya leaves, and the anticancer effects were stronger when cells received larger doses of the tea.

In a paper published in the Feb. 17 issue of the Journal of Ethnopharmacology, Dang and his colleagues also documented for the first time that papaya leaf extract boosts the production of key signaling molecules called Th1-type cytokines. This regulation of the immune system, in addition to papaya’s direct antitumor effect on various cancers, suggests possible therapeutic strategies that use the immune system to fight cancers.

The papaya extract did not have any toxic effects on normal cells, avoiding a common and devastating consequence of many cancer therapy regimens. The success of the papaya extract in acting on cancer without toxicity is consistent with reports from indigenous populations in Australia and his native Vietnam, said Dang, a professor of medicine and medical director of the UF Shands Cancer Center Clinical Trials Office.

“Based on what I have seen and heard in a clinical setting, nobody who takes this extract experiences demonstrable toxicity; it seems like you could take it for a long time — as long as it is effective,” he said.

Researchers exposed 10 different types of cancer cell cultures to four strengths of papaya leaf extract and measured the effect after 24 hours. Papaya slowed the growth of tumors in all the cultures.
To identify the mechanism by which papaya checked the growth of the cultures, the team focused on a cell line for T lymphoma. Their results suggested that at least one of the mechanisms employed by the papaya extract is inducing cell death.

In a similar analysis, the team also looked at the effect of papaya extract on the production of antitumor molecules known as cytokines. Papaya was shown to promote the production of Th1-type cytokines, important in the regulation of the immune system. For that reason, the study findings raise the possibility of future use of papaya extract components in immune-related conditions such as inflammation, autoimmune disease and some cancers.

Bharat B. Aggarwal, a researcher at the University of Texas M.D. Anderson Cancer Center in Houston, already is so convinced of papaya’s restorative powers that he has a serving of the fruit every day.
“We have always known that papaya has a lot of interesting things in there,” said Aggarwal, a professor in the center’s department of experimental therapeutics who was not involved in the UF research. Foremost among papaya’s health-promoting agents is papain, papaya’s signature enzyme, which is found in both the fruit and the leaves.

“This paper has not gone too much into identifying the components responsible for the activity, which is just fine. I think that is a good beginning,” Aggarwal said.
Aggarwal also noted that papaya extract’s success in reducing cancer in laboratory cell cultures must next be replicated in animal and human studies.
“I hope Dr. Dang takes it further, because I think we need enthusiastic people like him to move it forward,” Aggarwal said.

Dang and a colleague have applied to patent the process to distill the papaya extract through the University of Tokyo; the next step in the research is to identify the specific compounds in the papaya extract active against the cancer cell lines. For this stage, Dang has partnered with Hendrik Luesch, a fellow UF Shands Cancer Center member and a professor of medicinal chemistry. Luesch is an expert in the identification and synthesis of natural products for medicinal purposes, and recently discovered a coral reef compound that inhibits cancer cell growth in cell lines.

One of the latest foods to be associated with cancer is papaya. This versatile fruit is believed to have originated in South America but is very popular in Asian countries like Thailand where it is used in many creative

Here’s another health claims

The Papaya Cancer Cure and Other Health Claims

The papaya cancer cure is only one of many health claims for the fruit. It contains the enzyme papain that is beneficial for the digestive system. It is also promoted as a cure for constipation and have a boosting affect on the colon and help remove infections from the intestines. Another health claim for papaya is that it prevents nausea and vomiting including car sickness.

The claim of a papaya cancer cure is being boosted by recent research by the University of Florida. This research involved testing extracts from papaya. When the extract was applied to cancer cells it was observed to slow their growth down. The news of this research is being warmly welcomed by those around the world who are already convinced of the papaya cancer cure. Researchers at the University of Florida though were quick to point out that their research should not be viewed as proof that papaya can prevent or treat cancer in humans - more studies will be needed before any conclusions can be reached.

Warnings about Papaya

Like all things in nature, it seems that moderation is the key. There have been some claims that too much papaya may lead to prostate cancer. There is also the warning that those with a latex allergy should completely avoid contact with the fruit because it releases a latex fluid.

It may take some time before a conclusion can be reached about the beneficial effects of papaya as a way to deal with cancer. This does not mean that we need to wait before enjoying the benefits of this tasty fruit. You
no longer need to live in a certain part of the world to find papaya; the wonder of our modern world mean that it available practically everywhere. Just make sure that you are not allergic to latex and you don't go too overboard in your consumption.

http://www.associatedcontent.com/article/2857650/the_papaya_cancer_cure_possible_health.html?cat=5


P1070565.jpg
How about Chicken and Papaya salad once a week?
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