{"id":10879,"date":"2016-12-15T04:46:41","date_gmt":"2016-12-15T04:46:41","guid":{"rendered":"http:\/\/revoscience.com\/en\/?p=10879"},"modified":"2016-12-15T04:46:41","modified_gmt":"2016-12-15T04:46:41","slug":"anti-tumor-effect-novel-plasma-medicine-caused-lactate","status":"publish","type":"post","link":"https:\/\/www.revoscience.com\/en\/anti-tumor-effect-novel-plasma-medicine-caused-lactate\/","title":{"rendered":"Anti-Tumor Effect of Novel Plasma Medicine Caused by Lactate"},"content":{"rendered":"

Nagoya University researchers have developed cold plasma-activated Ringer\u2019s solution for chemotherapy. The solution has anti-tumor effects in vitro and in vivo that derive from the lactate component.<\/strong><\/em><\/span><\/p>\n

\"We
We created plasma-activated Ringer\u2019s lactate solution (PAL) and investigated its anti-tumor effects on cancer cells. We detected an apoptotic marker, cleaved Caspase3\/7 in PAL-treated glioblastoma cells, suggesting that PAL induced apoptosis. We created a mouse xenograft model in which SiHa cervical cancer cells were injected into mice subcutaneously, and the resultant tumors were treated with PAL three times a week for 6 weeks. PAL effectively reduced tumor volumes.
Credit : Nagoya University<\/figcaption><\/figure>\n

Nagoya, Japan \u2013 Physical plasma is one of the four fundamental states of matter, together with solid, liquid, and gas, and can be completely or partially ionized (thermal\/hot or non-thermal\/cold plasma, respectively). <\/span>
\nNon-thermal plasma has many industrial applications, but plasma medicine is a new field of therapy based on non-thermal atmospheric pressure plasma that has been used in cancer treatment, wound healing, and blood coagulation. Plasma is known to react with air to produce highly reactive free radicals, and with liquid to produce long-lived reactive molecules that can be used for chemotherapy. However, the exact components responsible for the anti-tumor effects were unknown.<\/span><\/p>\n

Now, a research team based at Nagoya University used plasma to activate Ringer\u2019s solution, a salt solution with existing therapeutic functions, and showed that its lactate component had anti-tumor effects. The study was reported in Scientific Reports.<\/span><\/p>\n

Previous work by the researchers developed plasma-activated cell culture medium as a form of chemotherapy, but selected Ringer\u2019s solution in the present work because of its simpler composition and likelihood of forming less complex reaction products. Ringer\u2019s lactate solution (Lactec) was irradiated with plasma for 3\u20135 minutes, after which it demonstrated anti-tumor effects on brain tumor cells.<\/span><\/p>\n

Other plasma-activated solutions have previously been shown to induce reactive oxygen species within cells, but these were not detected in plasma-activated Lactec (PAL)-treated cells, suggesting an alternative mechanism triggered cell death. Analysis of PAL identified high levels of hydrogen peroxide, which is a known anti-tumor factor and the probable cause of cell death.<\/span><\/p>\n

Lactec contains lactate and the salts sodium chloride, calcium chloride, and potassium chloride, in addition to water, so the team systematically analyzed plasma-activated synthetic versions of each component to identify which was responsible for killing cancer cells. \u201cOnly lactate demonstrated anti-tumor properties and generated hydrogen peroxide following plasma irradiation,\u201d first author Hiromasa Tanaka says. \u201cThis indicates that activated lactate increases intracellular hydrogen peroxide levels which cause apoptosis of the tumor cells.\u201d<\/span><\/p>\n

Some cell types were not killed by treatment with PAL, suggesting it could be used as a specific tumor therapy. \u201cPAL also appears to be safe for use in vivo,\u201d corresponding author Kae Nakamura says, \u201cas we observed no adverse effects when PAL successfully reduced the tumor volume of mice.\u201d<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Physical plasma is one of the four fundamental states of matter, together with solid, liquid, and gas, and can be completely or partially ionized (thermal\/hot or non-thermal\/cold plasma, respectively).
\nNon-thermal plasma has many industrial applications, but plasma medicine is a new field of therapy based on non-thermal atmospheric pressure plasma that has been used in cancer treatment, wound healing, and blood coagulation. Plasma is known to react with air to produce highly reactive free radicals, and with liquid to produce long-lived reactive molecules that can be used for chemotherapy. However, the exact components responsible for the anti-tumor effects were unknown.<\/p>\n","protected":false},"author":6,"featured_media":10881,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,26,17],"tags":[],"class_list":["post-10879","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biology","category-medicine","category-research"],"featured_image_urls":{"full":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101-150x150.jpg",150,150,true],"medium":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101-300x225.jpg",300,225,true],"medium_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"1536x1536":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"2048x2048":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"ultp_layout_landscape_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"ultp_layout_landscape":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"ultp_layout_portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"ultp_layout_square":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"newspaper-x-single-post":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"newspaper-x-recent-post-big":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",480,360,false],"newspaper-x-recent-post-list-image":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",87,65,false],"web-stories-poster-portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",576,432,false],"web-stories-publisher-logo":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",96,72,false],"web-stories-thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2016\/12\/4101.jpg",150,113,false]},"author_info":{"info":["Amrita Tuladhar"]},"category_info":"Biology<\/a> Medicine<\/a> Research<\/a>","tag_info":"Research","comment_count":"0","_links":{"self":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/10879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/comments?post=10879"}],"version-history":[{"count":0,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/10879\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media\/10881"}],"wp:attachment":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media?parent=10879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/categories?post=10879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/tags?post=10879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}