Head and neck cancers(HNCs) are aggressive tumors that typically demonstrate a high glycolytic rate, which results in resistance to cytotoxic therapy and poor prognosis. Due to their location these tumors specifically...Head and neck cancers(HNCs) are aggressive tumors that typically demonstrate a high glycolytic rate, which results in resistance to cytotoxic therapy and poor prognosis. Due to their location these tumors specifically impair food intake and quality of life, so that prevention of weight loss through nutrition support becomes an important treatment goal. Dietary restriction of carbohydrates(CHOs) and their replacement with fat, mostly in form of a ketogenic diet(KD), have been suggested to accommodate for both the altered tumor cell metabolism and cancer-associated weight loss. In this review, I present three specific rationales for CHO restriction and nutritional ketosis as supportive treatment options for the HNC patient. These are(1) targeting the origin and specific aspects of tumor glycolysis;(2) protecting normal tissue from but sensitizing tumor tissue to radiation- and chemotherapy induced cell kill;(3) supporting body and muscle mass maintenance. While most of these benefits of CHO restriction apply to cancer in general, specific aspects of implementation are discussed in relation to HNC patients. While CHO restriction seems feasible in HNC patients the available evidence indicates that its role may extend beyond fighting malnutrition to fighting HNC itself.展开更多
Objective:To explore the relationship between expressions of NF-κBp50,p53 and Bcl-2 in tissue of cervical can-cer and human papillomavirus(HPV)infection.Methods:The expressions of NF-κBp50,p53 and Bcl-2 were detecte...Objective:To explore the relationship between expressions of NF-κBp50,p53 and Bcl-2 in tissue of cervical can-cer and human papillomavirus(HPV)infection.Methods:The expressions of NF-κBp50,p53 and Bcl-2 were detected using immuohistochemical staining in 46 specimens of cervical cancer and 26 specimens of normal cervical tissue.The infection of HPV DNA were determined by PCR.Results:The expressions of NF-κBp50,p53 and Bcl-2 in tissue of cervical cancer were significantly higher than that in normal cervical tissue(P<0.01),and the expressions of NF-κBp50 and p53 or Bcl-2 were closely related(P<0.05).The expression of NF-κBp50 in HPV DNA positive group was significantly higher than that in HPV negative group(P<0.05),but there were no significantly differences in the expressions of p53 and Bcl-2 between HPV DNA positive group and HPV negative group(P>0.05).Conclusion:The expressions of NF-κBp50,p53 and Bcl-2 were significantly correlated with cervical carcinogenesis.NF-κBp50 may be activated by HPV infection.展开更多
文摘Head and neck cancers(HNCs) are aggressive tumors that typically demonstrate a high glycolytic rate, which results in resistance to cytotoxic therapy and poor prognosis. Due to their location these tumors specifically impair food intake and quality of life, so that prevention of weight loss through nutrition support becomes an important treatment goal. Dietary restriction of carbohydrates(CHOs) and their replacement with fat, mostly in form of a ketogenic diet(KD), have been suggested to accommodate for both the altered tumor cell metabolism and cancer-associated weight loss. In this review, I present three specific rationales for CHO restriction and nutritional ketosis as supportive treatment options for the HNC patient. These are(1) targeting the origin and specific aspects of tumor glycolysis;(2) protecting normal tissue from but sensitizing tumor tissue to radiation- and chemotherapy induced cell kill;(3) supporting body and muscle mass maintenance. While most of these benefits of CHO restriction apply to cancer in general, specific aspects of implementation are discussed in relation to HNC patients. While CHO restriction seems feasible in HNC patients the available evidence indicates that its role may extend beyond fighting malnutrition to fighting HNC itself.
基金Supported by a grant from the scientific research foundation of Wenzhou Science and Technology Bureau(No.S2001A30).
文摘Objective:To explore the relationship between expressions of NF-κBp50,p53 and Bcl-2 in tissue of cervical can-cer and human papillomavirus(HPV)infection.Methods:The expressions of NF-κBp50,p53 and Bcl-2 were detected using immuohistochemical staining in 46 specimens of cervical cancer and 26 specimens of normal cervical tissue.The infection of HPV DNA were determined by PCR.Results:The expressions of NF-κBp50,p53 and Bcl-2 in tissue of cervical cancer were significantly higher than that in normal cervical tissue(P<0.01),and the expressions of NF-κBp50 and p53 or Bcl-2 were closely related(P<0.05).The expression of NF-κBp50 in HPV DNA positive group was significantly higher than that in HPV negative group(P<0.05),but there were no significantly differences in the expressions of p53 and Bcl-2 between HPV DNA positive group and HPV negative group(P>0.05).Conclusion:The expressions of NF-κBp50,p53 and Bcl-2 were significantly correlated with cervical carcinogenesis.NF-κBp50 may be activated by HPV infection.
