(Feb. 27, 2008) — Hormones produced by the heart eliminated human pancreatic cancer in more than three-quarters of the mice treated with the hormones and eliminated human breast cancer in two-thirds of the mice, according to researcher David Vesely, a doctor at the James A. Haley Veterans Hospital in Tampa and a professor at the University of South Florida (USF).
Des hormones produites par le coeur ont éliminé le cancer humain du dans plus de 3/4 des souris traités avec ces hormones et il a éliminé 2/3 des cancers du humain implantés chez des souris selon le docteur David Vesely.The treatment has not yet been tried in humans, but a private biotechnology company is raising money in the hope of beginning human trials. Vesely is the hospital’s chief of endocrinology, diabetes and metabolism and is also professor of medicine, molecular pharmacology and physiology at USF.
Le traitement n'a pas encore été essayé chez des humains mais une compagnie privée de biotechnologie est à rassembler l,argent pour faire les premiers essais cliniques. The discovery of cardiac hormones
La découverte des hormones du coeur.For more than 350 years, scientists and physicians thought the heart was a pump, delivering blood and oxygen to the body. But that view changed dramatically in 1981 when Adolfo deBold discovered that the heart produces atrial natriuretic factor (ANF), so-named because it is produced in the atrium of the heart and stimulates the production of urine and the excretion of sodium.
Pour plus de 350 ans, les scientifiques et les docteurs ont pensés que le coeur n'était qu'une pompe qui livrait l'oxygène et le sang au corps. Mauis cette idée a changé drastiquement en 1981 quand Adolfo debold a découvert que le coeur produisait de l'ANF.Vesely later discovered three more hormones that are produced from the same gene as ANF. He called them:
Long acting natriuretic peptide, which also stimulates urine production and sodium excretion. Vessel dilator which opens the blood vessels and lowers blood pressure
Kaliuretic peptide which increases potassium excretion
Vesely plus tard a découvert 3 hormones supplémentaires qui ont été produit à partir du même gène, il les a appelé : le peptide naturietique de longue durée, qui stimules la production d'urine et la sécrétion de sodium, le dilatateur de vaisseaux qui ouvre les vaisseaux sanguins et fait diminuer la pression et le peptide Kaliuretique qui augmente la sécrétion de potassium. The hormones, called peptide hormones because they are composed of amino acids, help regulate blood volume and blood pressure. Most hormones, including such well-known hormones as insulin, are peptide hormones.
Started with congestive heart failure research
Vesely began his research on cardiac hormones by looking at the role they can play in diagnosing and treating congestive heart failure. Following his wife’s death from breast cancer in 2002 -- and as it became clear that the hormones controlled cell growth -- he decided to place the hormones into cancer cell cultures.
Vesely a commencé sa recherche sur les hormones en regardant les effets des hormones sur pour traiter les maladies du coeur mais, suite à la mort de son épouse et parce que ça dvenait clair que les hormones avaient un effet sur la croissance des cellules il a décidé de placer les hormones dans des cellules de culture cancéreuses. Using colon, ovarian, breast, prostate and pancreatic cancer cells, among others, Vesely found that the hormones kill up to 97% of all cancers in cell cultures within 24 hours. He then turned to trials with mice, injecting some with pancreatic cancer cells and others with breast cancer cells. Once the mice developed tumors, he treated them with the hormones.
At the end of one month, the treatment had eliminated cancer in 80% of the mice injected with human pancreatic cancer and in 66% of the mice injected with breast cancer. The results with pancreatic cancer were particularly exciting because it is a fast-moving cancer with poor prognosis.
En utilisant des cellulesde cancer du du de la et du pancreas: parmi d'autres. Vesely a découvert que les hormones tuaient jusqu'à 97% de toutes les cellules cancéreuses en dedans de 24 heures. Il a alors essayé les hormonessur des souris en injectant certaines avec des cellules canécreuses pancératiques et d'autres avec des cellules cancéreuses du
À la fin du mois, le traitememnt avait éliminé le cancer du pancréas chez 80% des souris et 66% du cacer du sein chez les souris injectées avec le cancer du sein. Les résultats avec le cancer du pancréas sont particulièrement réjouissants parce que c'Est un cancer qui tue rapidement. No side effects in mice
Pas d'effets secondaires.The pancreatic cancers that were not cured were reduced to less than 10% of their original size. Treatment with vessel dilator gave the best results: reducing the tumor to 2% of its largest size. None of the mice died of cancer – all died of old age – and none suffered any side effects.
None of the mice received any other course of treatment such as surgery, chemotherapy or radiation and they did not suffer any side effects. After the mice died at the end of a normal life span, the researchers found that the cancer had not spread. If the hormones act the same way in humans, cancer could become a chronic condition treatable with these hormones, Vesely said.
A private biotechnology company is raising money to begin human trials, Vesely said. The Haley hospital and University of South Florida hold the patents on the discoveries.
Vesely will present his research at a symposium April 9 at the Experimental Biology 2008 conference in San Diego. The American Federation for Medical Research sponsors the session, which takes place during the annual meeting of The American Physiological Society.
Vesely présentera sa découvert le 9 avril dans le symposium de San Diego.