ABSTRACT
Objective:To investigate the clinical characteristics of children with high-risk acute lymphoblastic leukemia (ALL) receiving lasting remission after severe infection.Methods:The data of 3 children with high-risk ALL who were treated in Children's Hospital Affiliated of Zhengzhou University in 2014, 2015 and 2017 were analyzed retrospectively. The clinical and laboratory characteristics of all patients were also analyzed, and the relevant literatures were reviewed.Results:All 3 children were clinically classified as high-risk ALL with severe infection. A variety of anti-infective drugs and blood products were used in the treatment, and all achieved lasting remission.Conclusions:Children with high-risk ALL after severe infection can acquire lasting remission, which may be related with the production of infection stimulating inflammatory factors and cytokines to activate certain immune pathways, or various kinds of antibiotics, blood products participating in the immune regulation to make the body regain the immune surveillance function of the tumor cells.
ABSTRACT
Objective:To investigate the diagnosis and treatment of congenital leukemia and the main factors affecting its prognosis.Methods:Clinical data of children with congenital leukemia admitted to Zhengzhou Children′s Hospital from July 2007 to December 2017 were retrospectively collected.Their clinical characteristics, chemotherapy and factors affecting their long-term survival were analyzed.Results:A total of 23 cases of congenital leukemia were collected, who mostly complained of " increased white blood cells, skin nodules and skin hemorrhage" . Among them, 10 cases abandoned the treatment, who all died according to the follow-up results.Among the 13 treated cases, 7 cases were male, and 6 were female.One of the 13 cases was a twin.Eight cases were acute myeloid leukemia, and 5 cases were acute lymphoblastic leukemia.One case did not perform the fusion gene test. MLL gene was positive in 2 cases and negative in 10 cases.No other fusion genes were detected.Karyotype analysis showed that 1 case was 21-trisomy and 12 cases had a normal karyotype.All 13 patients received symptomatic and/or reduced chemotherapy.The median follow-up time was 4 years and 11 months.Six cases recovered and 7 cases died during the follow-up.One case was diagnosed with acute lymphoblastic leukemia on the 6 th day after the birth in another hospital.He was not treated timely and came to Zhengzhou Children′s Hospital with general contract blocks at the age of 32 days.After checking, he was diagnosed with center leukemia and testicular leukemia.He developed a severe infection in the lung and brain after strong chemotherapy, and died even after the remote consultation with Lurie Children′s Hospital of Chicago.The other 6 cases died of severe infection and multiple organ injuries after chemotherapy, and no one died of leukemia relapse. Conclusion:Reduction chemotherapy may be an important treatment to children with congenital leukemia.
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the changes and roles of follicular regulatory T cells (Tfr) and follicular T helper cells (Tfh) in the pathogenesis of children immune thrombocytopenia (ITP).</p><p><b>METHODS</b>32 untreated ITP patients, as well as 20 healthy controls were enrolled in this study. The proportion of circulating Tfr and Tfh cells were determined by flow cytometry; real-time PCR was performed to detect the expression of transcription factors and regulatory factors of Bcl-6, c-Maf, Blimp-1 and PD-1 mRNA; ELISA was used to detect plasma concentration of IL-2, IL-6, IL-10 and IL-21.</p><p><b>RESULTS</b>(1)The proportion of Tfh cells were significantly higher (P<0.05), while the Tfr cells and the ratio of tfr/Tfh cells in ITP patients were significantly lower than that in health controls (P<0.05); (2)Correlation analysis showed that the Tfr cells and the ratio of Tfr/Tfh were positively correlated with the platelet counts and negatively with the levels of PA-IgG, while the proportion of Tfh cells was positively correlated with the levels of PA-IgG and negatively with the platelet counts in peripheral blood; (3)Transcription levels of Bcl-6 and c-Maf mRNA in CD4(+) T lymphocytes cells were significantly elevated, the Blimp-1 mRNA in CD4(+) cells and PD-1 mRNA levels of Treg were lower in ITP patients in comparison with healthy controls; (4)The higher Plasma concentration of IL-21, and lower concentration of IL-2 were found in ITP patients.</p><p><b>CONCLUSION</b>(1)The lower proportion of Tfr cells and higher proportion of Tfh cells, as well as the abnormal ratio of Tfr/Tfh might account for the decreased platelet counts to be further involved in the immunological pathogenesis of children ITP; (2)The changes of plasma cytokines IL-2, IL-21 in microenvironment and the over-expression of Bcl-6 mRNA, c-Maf mRNA and the lower-expression of Blimp-1 mRNA in CD4(+) T cells, and over-expression of PD-1 mRNA in Treg cells might be account for the abnormal ratios of Tfr/Tfh cells in ITP patients.</p>
Subject(s)
Child , Humans , Cell Movement , Purpura, Thrombocytopenic, Idiopathic , Allergy and Immunology , T-Lymphocytes, Helper-Inducer , Allergy and Immunology , T-Lymphocytes, Regulatory , Allergy and ImmunologyABSTRACT
Diamond-Blackfan anemia(DBA)is a rare disease with depauperate red blood cells.For absence of its whole naturally successive information,it is very hard to know distinctly its diagnositic and curative viewpoints to evaluate its prognosis.Especially domestically,its systematic study is more insufficient.The paper approaches its diagnostic criteria and evaluates its feasibly curative viewpoints,including hormone drugs treatment,blood-transfusion treatment and transplanting haemopoietic stem cells.
ABSTRACT
According to the needs of maintenances a detection kit for ECG cable is developed to detect the onoff condition of the wire, which can form a loop, and to indicate the result on a LED. The kit proves to be simple and practical and thus can significantly increase the maintenance efficiency of ECG cable.