TY - JOUR
T1 - Pancreatic Enzyme Extract Improves Survival in Murine Pancreatic Cancer
AU - Saruc, Murat
AU - Standop, Silke
AU - Standop, Jens
AU - Nozawa, Fumiaki
AU - Itami, Atsushi
AU - Pandey, Krishan K.
AU - Batra, Surinder K.
AU - Gonzalez, Nicholas J.
AU - Guesry, Pierre
AU - Pour, Parviz M.
PY - 2004/5
Y1 - 2004/5
N2 - Objectives: The disappointing current therapeutic approaches for pancreatic cancer (PC) represent an urgent need for the development of novel methods to control the disease. Based on a recent report on the effectiveness of pancreatic enzyme therapy, we examined the effect of porcine pancreatic enzyme extracts (PPE) on human PC xenografts in nude mice. Methods: The malignant human PC cell line AsPC1 was transplanted into the pancreas of male beige XID nude mice that were treated or not with PPE in drinking water. The survival, size, and volume of tumors, plasma pancreatic enzyme levels, fecal fat, and urine were examined as were the expression of transforming growth factor α, insulinlike growth factor-I, epidermal growth factor, epidermal growth factor receptor, apoptosis, and proliferation rate of tumor cells. Results: PPE-treated mice survived significantly longer than the control group (P < 0.002). Tumors in the PPE-treated group were significantly smaller than in the control group. All mice in the control group showed steatorrhea, hyperglucosuria, hyperbilirubinuria, and ketonuria at early stages of tumor growth, whereas only a few in the treated group showed some of these abnormalities at the final stage. There were no differences in the expression of growth factors, epidermal growth factor receptor, or the apoptotic rate between the tumors of treated and control mice. Conclusions: The treatment with PPE significantly prolongs the survival of mice with human PC xenografts and slows the tumor growth. The data indicate that the beneficial effect of PPE on survival is primarily related to the nutritional advantage of the treated mice.
AB - Objectives: The disappointing current therapeutic approaches for pancreatic cancer (PC) represent an urgent need for the development of novel methods to control the disease. Based on a recent report on the effectiveness of pancreatic enzyme therapy, we examined the effect of porcine pancreatic enzyme extracts (PPE) on human PC xenografts in nude mice. Methods: The malignant human PC cell line AsPC1 was transplanted into the pancreas of male beige XID nude mice that were treated or not with PPE in drinking water. The survival, size, and volume of tumors, plasma pancreatic enzyme levels, fecal fat, and urine were examined as were the expression of transforming growth factor α, insulinlike growth factor-I, epidermal growth factor, epidermal growth factor receptor, apoptosis, and proliferation rate of tumor cells. Results: PPE-treated mice survived significantly longer than the control group (P < 0.002). Tumors in the PPE-treated group were significantly smaller than in the control group. All mice in the control group showed steatorrhea, hyperglucosuria, hyperbilirubinuria, and ketonuria at early stages of tumor growth, whereas only a few in the treated group showed some of these abnormalities at the final stage. There were no differences in the expression of growth factors, epidermal growth factor receptor, or the apoptotic rate between the tumors of treated and control mice. Conclusions: The treatment with PPE significantly prolongs the survival of mice with human PC xenografts and slows the tumor growth. The data indicate that the beneficial effect of PPE on survival is primarily related to the nutritional advantage of the treated mice.
KW - Nude mice
KW - Pancreatic cancer
KW - Pancreatic enzyme
KW - Survival
KW - Therapy
KW - Xenograft
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U2 - 10.1097/00006676-200405000-00009
DO - 10.1097/00006676-200405000-00009
M3 - Article
C2 - 15097858
AN - SCOPUS:11144357591
SN - 0885-3177
VL - 28
SP - 401
EP - 412
JO - Pancreas
JF - Pancreas
IS - 4
ER -