pH-sensitive liposomal cisplatin improves peritoneal carcinomatosis treatment without side-effects

August 27, 2012

Scientists at the Oswaldo Cruz Foundation and Federal University of Minas Gerais, led by Dr. Andréa Teixeira-Carvalho and Dr. Mônica Cristina de Oliveira, have developed and characterized a circulating and pH-sensitive liposome containing cisplatin (SpHL-CDDP) aiming to promote the release of cisplatin near the tumor as well as decreasing toxicity. The development of analog drugs and new formulations are current strategies for increasing the effectiveness and safety of cisplatin as an anti-peritoneal carcinomatosis drug. The results, which appear in the August 2012 issue of Experimental Biology and Medicine demonstrate that the treatment of initial or disseminated Ehrlich ascitic tumor-bearing Swiss mice with SpHL-CDDP improved the antitumor efficacy and decreased renal and bone marrow toxicity of cisplatin-based therapy.

"Peritoneal carcinomatosis is a serious concern in the treatment of abdominal tumors such as hepatic, gastric and gynecological tumors", says Dr. Oliveira. "The strategy of local chemotherapy is interesting due to the possibility to increase the while minimizing systemic side-effects. SpHL-CDDP treatment was able to reduce cancer and increase survival, in the animal model, with no known toxicity clinical signs found in the free CDDP treatment." says Dr. Maroni.

These results open the possibility of future use of SpHL-CDDP in chemotherapy of peritoneal carcinomatosis. "New studies are underway in our research group to investigate the signaling pathways of cell death as well as use of high doses of SpHL-CDDP for the treatment of peritoneal carcinomatosis", says Dr. Teixeira-Carvalho.

Dr. Steven R. Goodman, Editor-in-Chief of , said " This very interesting study has utilized a new pH-sensitive circulating liposome containing cisplatin formulation which decreased cancer proliferation and drug toxicity in a mouse model. This provides the basis for further translational testing of this formulation leading to clinical trials aimed at more effective treatment of abdominal tumors".

Explore further: Curcumin compound improves effectiveness of head and neck cancer treatment

Related Stories

Curcumin compound improves effectiveness of head and neck cancer treatment

May 19, 2011
A primary reason that head and neck cancer treatments fail is the tumor cells become resistant to chemotherapy drugs. Now, researchers at the University of Michigan Comprehensive Cancer Center have found that a compound derived ...

New biomarker for common lung cancer predicts responses to chemotherapy

July 26, 2012
Patients with the most common type of lung cancer are notoriously insensitive to chemotherapy drugs, including cisplatin. New findings related to the cellular pathways that regulate responses to cisplatin have now been published ...

Cause and potential treatment found for cancer drug's kidney toxicity

June 2, 2011
Scientists may have a way to make the powerful cancer drug cisplatin less toxic to the kidneys and more effective against some cancers.

Recommended for you

Scientists find RNA with special role in nerve healing process

August 22, 2017
Scientists may have identified a new opening to intervene in the process of healing peripheral nerve damage with the discovery that an "anti-sense" RNA (AS-RNA) is expressed when nerves are injured. Their experiments in mice ...

Mouse model of human immune system inadequate for stem cell studies

August 22, 2017
A type of mouse widely used to assess how the human immune system responds to transplanted stem cells does not reflect what is likely to occur in patients, according to a study by researchers at the Stanford University School ...

Researchers offer new targets for drugs against fatty liver disease and liver cancer

August 22, 2017
There may no silver bullet for treating liver cancer or fatty liver disease, but knowing the right targets will help scientists develop the most effective treatments. Researchers in Sweden have just identified a number of ...

Make way for hemoglobin

August 18, 2017
Every cell in the body, whether skin or muscle or brain, starts out as a generic cell that acquires its unique characteristics after undergoing a process of specialization. Nowhere is this process more dramatic than it is ...

Bio-inspired materials give boost to regenerative medicine

August 18, 2017
What if one day, we could teach our bodies to self-heal like a lizard's tail, and make severe injury or disease no more threatening than a paper cut?

Are stem cells the link between bacteria and cancer?

August 17, 2017
Gastric carcinoma is one of the most common causes of cancer-related deaths, primarily because most patients present at an advanced stage of the disease. The main cause of this cancer is the bacterium Helicobacter pylori, ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.