title: [Evaluation of the increasing serum lactate dehydrogenase caused by recombinant human granulocyte-colony stimulating factor].
abstract: OBJECTIVE
  Increasing serum lactate dehydrogenase (LDH) is often caused by granulocyte-colony stimulating factor (G-CSF) for leukopenia following chemotherapy in patients with lung cancer. To evaluate the increase in LDH, we investigated the significance of its elevation and LDH isozyme during chemotherapy supported by recombinant human G-CSF (rhG-CSF).
  
  
  METHODS
  To exclude effects of liver diseases and chemotherapy-induced liver dysfunction, only patients in whom laboratory findings concerning liver function were within normal range were entered in this study. If leukocyte or neutrophil counts were less than grade 3, subcutaneous injection of 50 micrograms/m2 of filgrastim was given daily until leukocyte counts increased to more than 10,000/mm3.
  
  
  RESULTS
  Sixty patients with unresectable lung cancer were enrolled in this study and the LDH isozyme was evaluable in 54 patients. Increasing LDH was observed in 38 patients(70.4%), and LDH isozyme was measured in these 38 patients. Increases in granulocytes and LDH isozymes were found to have a positive correlation. LDH2, LDH3, LDH4 and LDH5 increased significantly after rhG-CSF administration, although LDH 1 did not increase.
  
  
  CONCLUSIONS
  It was found that a rapid increase in leukocytes by rhG-CSF induced an increase in LDH, especially LDH 3.4. Considering the results of principal component analysis and the distribution ratio of LDH isozymes in neutrophils, it is thought that elevation of LDH is reflected in the rapid production and consumption of neutrophils.
authors.affiliation: Division of Respiratory Medicine, Gifu Municipal Hospital.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Sawa
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Yoshida
authors.forename: Tetsuroh
authors.initials: T
authors.lastname: Ikoma
authors.forename: Miki
authors.initials: M
authors.lastname: Toyoda
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Ohno
authors.forename: Hisayoshi
authors.initials: H
authors.lastname: Fujiwara
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000008:administration & dosage*; D006801:Humans; D007527:Isoenzymes / Q000097:blood*; D007770:L-Lactate Dehydrogenase / Q000097:blood*; D007970:Leukopenia / Q000139:chemically induced / Q000188:drug therapy; D008175:Lung Neoplasms / Q000188:drug therapy / Q000201:enzymology*; D008297:Male; D008875:Middle Aged; D009504:Neutrophils / Q000201:enzymology; D011994:Recombinant Proteins
chemical_list: D007527:Isoenzymes; D011994:Recombinant Proteins; D016179:Granulocyte Colony-Stimulating Factor; D007770:L-Lactate Dehydrogenase