title: Enhanced antitumor efficacy of cisplatin in combination with HemoHIM in tumor-bearing mice.
abstract: BACKGROUND
  Although cisplatin is one of the most effective chemotherapeutic agents, cisplatin alone does not achieve a satisfactory therapeutic outcome. Also cisplatin accumulation shows toxicity to normal tissues. In this study, we examined the possibility of HemoHIM both to enhance anticancer effect with cisplatin and to reduce the side effects of cisplatin in melanoma-bearing mice.
  
  
  METHODS
  HemoHIM was prepared by adding the ethanol-insoluble fraction to the total water extract of a mixture of 3 edible herbs, Angelica Radix, Cnidium Rhizoma and Paeonia Radix. Anticancer effects of HemoHIM with cisplatin were evaluated in melanoma-bearing mice. We used a Cr51-release assay to measure the activity of NK/Tc cell and ELISA to evaluate the production of cytokines.
  
  
  RESULTS
  In melanoma-bearing mice, cisplatin (4 mg/kg B.W.) reduced the size and weight of the solid tumors, and HemoHIM supplementation with cisplatin enhanced the decrease of both the tumor size (p < 0.1) and weight (p < 0.1). HemoHIM itself did not inhibit melanoma cell growth in vitro, and did not disturb the effects of cisplatin in vitro. However HemoHIM administration enhanced both NK cell and Tc cell activity in mice. Interestingly, HemoHIM increased the proportion of NK cells in the spleen. In melanoma-bearing mice treated with cisplatin, HemoHIM administration also increased the activity of NK cells and Tc cells and the IL-2 and IFN-gamma secretion from splenocytes, which seemed to contribute to the enhanced efficacy of cisplatin by HemoHIM. Also, HemoHIM reduced nephrotoxicity as seen by tubular cell of kidney destruction.
  
  
  CONCLUSIONS
  HemoHIM may be a beneficial supplement during cisplatin chemotherapy for enhancing the anti-tumor efficacy and reducing the toxicity of cisplatin.
authors.affiliation: Radiation Resarch Division for Bio-Technology, Advanced Radiation Technology Institute, Jeongeup Campus of Korea Atomic Energy Research Institute (KAERI), 1266 Sinjeong-dong Jeongeup-si Jeonbuk 580-185, Republic of Korea. hrpark@kaeri.re.kr
authors.forename: Hae-Ran
authors.initials: HR
authors.lastname: Park
authors.forename: Eun-Jin
authors.initials: EJ
authors.lastname: Ju
authors.forename: Sung-Kee
authors.initials: SK
authors.lastname: Jo
authors.forename: Uhee
authors.initials: U
authors.lastname: Jung
authors.forename: Sung-Ho
authors.initials: SH
authors.lastname: Kim
authors.forename: Sung-Tae
authors.initials: ST
authors.lastname: Yee
mesh_terms: D029969:Angelica / Q000737:chemistry; D000818:Animals; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D002945:Cisplatin / Q000008:administration & dosage; D031048:Cnidium / Q000737:chemistry; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D004357:Drug Synergism; D004797:Enzyme-Linked Immunosorbent Assay; D007371:Interferon-gamma / Q000378:metabolism; D007376:Interleukin-2 / Q000378:metabolism; D007668:Kidney / Q000187:drug effects / Q000473:pathology; D007694:Killer Cells, Natural / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D008546:Melanoma, Experimental / Q000188:drug therapy* / Q000276:immunology / Q000473:pathology; D051379:Mice; D008810:Mice, Inbred C57BL; D016685:Mitomycin / Q000008:administration & dosage; D029596:Paeonia / Q000737:chemistry; D010936:Plant Extracts / Q000008:administration & dosage / Q000737:chemistry; D013602:T-Lymphocytes, Cytotoxic / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D016896:Treatment Outcome
chemical_list: C529537:HemoHIM; D007376:Interleukin-2; D010936:Plant Extracts; D016685:Mitomycin; D007371:Interferon-gamma; D002945:Cisplatin