Objective To investigate the clinical characteristics of children with medulloblastoma (MB). Methods The correlations amongst MB histopathological subtype,age at diagnosis,gender,primary tumor locations, relapsed tumor and relapsed tumor locations were analyzed retrospectively in 83 children who were diagnosed as MB by histopathology subtypes from February 2012 to April 2015 in Beijing Shijitan Hospital Affiliated to Capital Medical Uni-versity.The data was conducted by using SPSS 22.0 statistical software.Results Among the 83 cases (53 boys and 30 girls),there were 14 patients younger than 3 years old (9 boys and 5 girls)and 69 patients (44 boys and 25 girls)ol-der than 3 years old,including 28 relapsed (19 boys and 9 girls)and 55 non -relapsed cases (34 boys and 21 girls). The median age was 80.2 (13.1 -184.7)months at diagnosis.Of these 83 cases,48.2% (40 /83 cases)was classic medulloblastoma (CMB)(2 cases less than 3 years old),24.1 % (20 /83 cases)was desmoplastic /nodular medullo-blastoma (DMB)(6 cases less than 3 years old),12.1 % (10 /83 cases)was large cell/anaplastic medulloblastoma (LC /AMB)(1 case less than 3 years old),3.6% (3 /83 cases)was extensive nodular medulloblastoma (MBEN)(1 case less than 3 years old),and 12.1 % (10 /83 cases)(3 cases less than 3 years old)was mixed subtype.The rela-tionships between age at diagnosis and histopathological subtype,gender and primary tumor location were all statistically significant (χ2 =0.014,0.013,all P <0.05).Conclusions The incidence of boys with MB is higher than girls.CMB is the main histopathologic subtype in children over 3 years old.The primary tumor location involving the cerebellar vermis or cerebellar vermis and the fourth ventricle is higher in girls with MB.The primary tumor location involving the fourth ventricle,the fourth ventricle and other parts of the central nervous system,Cerebellar vermis and other parts of the central nervous system or other parts of the central nervous system is higher in boys with MB.

OBJECTIVETo investigate the effect of IFN-α on cytokines in serum of patients with chronic myeloid leukemia(CML).

METHODSFifty patients with CML from March 2012 to December 2015 in our hospital were randomly divided into routine treatment group (n=25) and combined treatment group (n=25), 30 healthy persons were selected as control (control group). The CML patients in routine treatment group were given orally hydroxyurea, the CML patients in combined treatment group were treated with recombinant human interferon α2b injection based on routine treatment (hydroxyurea plus IFN-α group). The levels of ALP, IL-6, PGE-2, MMP-2, and bFGF in serum were detected by ELISA. The cytogenetic, molecular and hematologic responses of patients in routine treatment group and combined treatment group, including patients in chronic and accelerated blastic phases were compared after 6 weeks of treatment.

RESULTSThe servum levels of ALP, IL-6, PGE-2, MMP-2 and bFGF in CML patients with chronic and accelerated blastic phases all were higher than those in control group(P<0.05). The levels of MMP-2 and bFGF in CML patients with chronic phase were highr than those of CML patients with accelerated blastic phase (P<0.05), the levels of ALP, PGE-2 and IL-6 of patients with chronic phase were significantly lower than those of patients in accelerated blastic phase (P<0.05). The ALP, IL-6, PGE-2, MMP-2 and bFGF levels in combined treatment group were significantly lower than those in the routine treatment group after 2 weeks and 6 weeks of treatment(P<0.05); After the end of treatment, the CHR of routine treatment group was 56%, which was lower than that of combined treatment group 84%(χ=18.667, P<0.001); the CCyR of routine treatment group was 32% which was significantly higher than 12% in combined treatment group(χ=11.655, P<0.001); the CMR of routine treatment group was 12% that was significantly higher than 4% in combined treatment group (χ=4.347, P=0.037). The median survival time of routine treatment group was significantly shorter than that of the combined treatment group, but there was no significant difference during follow-up (P>0.05).

CONCLUSIONIFN-α can alleviate the symptoms of patients with CML and inhibit the process of disease with CML patients, effectively inhibit the expression of disease-related cytokines.