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This study was designed to evaluate the effect of low-dose Ara-C in the treatment of refractory, atypical leukemia and myelodysplastic syndrome (MDS). The subjects were 33 patients (19 acute myelocytic leukemia (AML), 9 MDS, 3 atypical leukemia and 2 unclassified leukemia). The age range was 19 to 84 years with a mean age of 51.5 years. We administered low-dose Ara-C (5-10 mg/m2/12 h s.c. or i.v.) for 13 to 35 days with a mean of 16.7 days. Complete remission and partial remission were obtained in 8 of 31 (25.8%) and in 9 of 31 (29.0%) respectively. A high response rate was found in M2 types showing a tendency for mature and refractory anemia with excess blasts in MDS according to the FAB classification. In our cases, severe pancytopenia in peripheral blood as a result of Ara-C was observed before normal hematopoiesis recurred. From the above results, the mechanism of low-dose Ara-C may induce remission by a cytotoxic rather than a differentiation effect. This treatment can be offered to patients with refractory, atypical leukemia and MDS with limited toxicity.
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
April 1987,
Gan to kagaku ryoho. Cancer & chemotherapy,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
April 1988,
Gan to kagaku ryoho. Cancer & chemotherapy,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
December 1989,
Bone marrow transplantation,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
January 1990,
Leukemia research,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
October 1984,
[Rinsho ketsueki] The Japanese journal of clinical hematology,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
August 1985,
Cancer,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
February 1986,
Nihon Ketsueki Gakkai zasshi : journal of Japan Haematological Society,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
February 1991,
[Rinsho ketsueki] The Japanese journal of clinical hematology,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
September 1996,
[Rinsho ketsueki] The Japanese journal of clinical hematology,
K Tsubaki, and
A Horiuchi, and
K Nagai, and
A Kanamaru, and
M Kohsaki, and
T Kitani, and
S Tagawa, and
T Masaoka, and
H Shibata, and
K Yasunaga
January 1987,
Haematologica,
