DNA Mutational Analysis ; Diagnosis, Differential ; Humans ; Lymphohistiocytosis, Hemophagocytic ; diagnosis ; genetics ; therapy ; Mutation ; genetics ; Perforin ; Pore Forming Cytotoxic Proteins ; genetics ; Qa-SNARE Proteins ; genetics

Objective To meet an emergency of film development by automatic-manual X-ray film development machine when malfunction or power failure occurs.Methods The field dark room was made along with development and fixing baths.The film was developed artificially.Results Satisfactory films for limbs and chest were developed.Conclusion The equipment is easy to load,spread and operate.It can be used not only as assistant field film development equipment,but also as training equipment for field hygiene unit that isn't allotted automatic-manual X-ray film development machine.

Adolescent ; Antibodies, Monoclonal ; therapeutic use ; Antigens, Neoplasm ; immunology ; Cancer Vaccines ; immunology ; Child ; Child, Preschool ; Humans ; Immunotherapy ; methods ; Infant ; Killer Cells, Natural ; immunology ; Lymphocyte Transfusion ; Neoplasms ; immunology ; therapy ; Pediatrics ; Stem Cell Transplantation

In this study, norcanthridin (NCTD)-encapsulated liposomes were modified with a novel murine anti-human CD19 monoclonal antibody 2E8 (2E8-NCTD-liposomes) and the targeting efficiency and specific cytotoxicity of 2E8-NCTD-liposomes to CD19(+) leukemia cells were evaluated. BALB/c mice were injected with 2E8 hybridoma cells to obtain 2E8 monoclonal antibody (mAb). NCTD-liposomes were prepared by using film dispersion method. 2E8 mAbs were linked to NCTD-liposomes using post-incorporation technology. Flow cytometry showed that the targeting efficiency of purified 2E8 mAbs on CD19(+) Nalm-6 cells was 99.93%. The purified 2E8 mAbs were conjugated with NCTD-liposomes to prepare 2E8-NCTD-liposomes whose targeting efficiency on CD19(+) Nalm-6 was also 95.82%. The average size of 2E8-NCTD-liposomes was 118.32 nm in diameter. HPLC showed that the encapsulation efficiency of NCTD was 46.51%. When the molar ratio of 2E8/Mal-PEG(2000)-DSPE reached 1:50, we obtained the liposomes with 9 2E8 molecules per liposome. The targeting efficiency of 2E8-NCTD-liposomes on CD19(+) leukemia cells was significantly higher than that on CD19-leukemia cells. Similarly, the targeting efficiency of the immunoliposomes was also higher than that of the NCTD-liposomes on CD19(+) leukemia cells. Those results were consistent with those observed by laser scanning confocal microscopy. 3-(4, 5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay demonstrated that 2E8-NCTD-liposomes specifically killed Nalm-6 cells in a dose- and time-dependent manner. The viability of Nalm-6 cells treated by 2E8-NCTD-liposomes was significantly lower than that of Molt-3 cells and it was also significantly lower than that of Nalm-6 cells treated with the same concentration of NCTD-liposomes or free NCTD. We are led to concluded that 2E8 antigen can serve as a specific targeting molecule of B lineage hematopoietic malignancies for liposome targeting, and 2E8-NCTD-liposomes can be used as a new and effective means for the treatment of B lineage hematopoietic malignancies.

Objective To observe the influencing of Yiqi Huayu Jiedu Prescription on the growth of HepG2 nude mice transplantation tumor and the expression of related factors of vascular mimicry. Methods Models of transplanted tumors, which were made by HepG2 cells in nude mice, were randomly divided into 7 groups, Yiqi Huayu Jiedu Prescription group, Astragali Radix group, Curcumae Rhizoma group, Paridis Rhizoma group, Gecko group, cis-platinum group, and model group. Except for the model group, the rest groups were given relevant medicine for intervention. 21 days later. HIF-1α, MMP-2, MMP-9, and E-cad were detected by immunohistochemistry, and Twist1 and Bcl-2 were detected by fluorescence quantitative PCR. Results Compared with the model group, tumor volume in the rest groups decreased (P<0.05), and the effect in the Yiqi Huayu Jiedu Prescription group was more obvious than the Astragali Radix group, Paridis Rhizoma group and Gecko group (P<0.05);The expression of vasculogenic mimicry structure was rare in each group, and the model group and cis-platinum group were the most obvious;Except for the Astragali Radix group, the expressions of HIF-1α, MMP-2, and MMP-9 showed statistical significance compared with model group (P<0.05);The expression of E-cad in the Yiqi Huayu Jiedu Prescription group and Astragali Radix group showed statistical significance (P<0.05);The expression of Bcl-2 in the Yiqi Huayu Jiedu prescription group, Paridis Rhizoma group, and Gecko group decreased significantly compared with the model group (P<0.05);The expression of Bcl-2 in the Yiqi Huayu Jiedu prescription group was much better than the other groups (P<0.05);The expression of Twist1 showed statistical significance in the Yiqi Huayu Jiedu Prescription group, Curcumae Rhizoma group, Paridis Rhizoma group, and cis-platinum group (P<0.05). Conclusion Yiqi Huayu Jiedu Prescription can reduce expression of HIF-1α, Twist1, Bcl-2, MMP-2, and MMP-9, and increase expression of E-cad, thereby inhibiting the formation of vascular mimicry.

hematological malignant tumors with CD19 high expression.

In this study,norcanthridin(NCTD)-encapsulated liposomes were modified with a novel murine anti-human CD19 monoclonal antibody 2E8(2E8-NCTD-liposomes)and the targeting efficiency and specific cytotoxicity of 2E8-NCTD-liposomes to CD19+leukemia cells were evaluated.BALB/c mice were injected with 2E8 hybridoma cells to obtain 2E8 monoclonal antibody(mAb).NCTD-liposomes were prepared by using film dispersion method.2E8 mAbs were linked to NCTD-liposomes using post-incorporation technology.Flow cytometry showed that the targeting efficiency of purified 2E8 mAbs on CDI9+Nalm-6 cells was 99.93%.The purified 2E8 mAbs were conjugated with NCTD-liposomes to prepare 2E8-NCTD-liposomes whose targeting efficiency on CD19+Nalm-6 was also 95.82%.The average size of 2E8-NCTD-liposomes was 118.32 nm in diameter.HPLC showed that the encapsulation efficiency of NCTD was 46.51%.When the molar ratio of 2E8/MaI-PEG2000-DSPE reached 1:50,we obtained the liposomes with 9 2E8 molecules per liposome.The targeting efficiency of 2E8-NCTD-liposomes on CD19+leukemia cells was significantly higher than that on CD19-leukemia cells.Similarly,the targeting efficiency of the immunoliposomes was also higher than that of the NCTD-liposomes on CD 19+leukemia cells.Those results were consistent with those observed by laser scanning confocal microscopy.3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)assay demonstrated that 2E8-NCTD-liposomes specifically killed Nalm-6 cells in a dose-and time-dependent manner.The viability of Nalm-6 cells treated by 2E8-NCTD-liposomes was significantly lower than that of Molt-3cells and it was also significantly lower than that of Nalm-6 cells treated with the same concentration of NCTD-liposomes or free NCTD.We are led to concluded that 2E8 antigen can serve as a specific targeting molecule of B lineage hematopoietic malignancies for liposome targeting,and 2E8-NCTD-liposomes can be used as a new and effective means for the treatment of B lineage hematopoietic malignancies.

Hemophagocytic lymphohistiocytosis (HLH) in different ethnicities has been described in the literature, but few cases in patients of Chinese descent have been reported. Here, we describe the case of a Chinese neonate presenting with HLH carrying novel, compound heterozygous mutations of the UNC13D gene, including [c.2295_2298delGCAG, p.Glu765Aspfs*27] in exon 23, c.-250C>T, c.1+30G>A, c.279C>T, c.888G>C, c.18+36A>G, c.20-48T>C, c.1977C>T, c.2296C>T, c.24-46C>T, c.26-9_26-8insC, c.2599A>G, c.28+48C>T and c.3198A>G, some of which have not been reported in the literature. Cytokine profile analyses were performed in this patient, and the results were consistent with our previous findings in HLH patients. Cytokine profile monitoring may be helpful in differentiating among various clinical phases of HLH.
Asian Continental Ancestry Group/genetics ; Cytokines/blood ; Heterozygote ; Humans ; Infant, Newborn ; Lymphohistiocytosis, Hemophagocytic/drug therapy/*genetics ; Male ; Membrane Proteins/*genetics ; *Mutation

Objective To explore the value of cytokines and procalcitonin (PCT) in predicting the potential pathogen and the severity of infection in children with hematological malignancies.Methods This was a prospective cohort study.A total of 1 543 children (3 912 episodes) with hematological malignancies admitted to the Department of Hematology/Oncology in Children's Hospital of Zhejiang University School of Medicine from November 2010 to June 2018 were prospectively enrolled in this study.According to the pathogen,the patients were divided into sepsis group with positive blood culture (380 patients/608 episodes),sepsis group with negative blood culture (539/1 484),non-septic infection group (549/1 709),viral infection group (18/21) and fungal infection group (57/90).The patients were also divided into two groups in either shock group (171/187) or non-shock group (1372/3725).Meanwhile,89 children (112 episodes) with matched hematological malignancies without fever were enrolled as the control group.The levels of PCT and cytokines were measured for detecting the potential relationship between these markers and infection severity.Mann-Whitney U test or Kruskal-Wallis H test was used to compare the differences between groups.The Receiver Operator Characteristic curve analysis was used to explore the predictive value.Results (1) There were significantly higher levels of interleukin (IL) 6 (H=210.002,P＜0.01),IL-10 (H=223.045,P＜0.01),and PCT (H=76.799,P＜0.01) in the infection group,with area under curre (AUC) of 0.67 (95％CI 0.64-0.69),0.69 (95％CI 0.66-0.71) and 0.59 (95％CI 0.56-0.61),respectively.(2) Among the patients in the shock group,IL-6 (Z=11.460,P＜0.01),IL-10 (Z=14.242,P＜0.01) and PCT (Z=10.813,P＜0.01) were significantly higher than those in the non-shock group,with the AUC of 0.75 (95％CI 0.70-0.79),0.81 (95％CI 0.77-0.84) and 0.73 (95％CI 0.69-0.77),respectively.(3) In patients with septic shock,the incidence of Gram negative bacteria (GNB) infection (60 episodes) was significantly higher than Gram positive bacteria (GPB) infection (22 episodes) (x2=29.665,P＜0.01).The AUC of IL-6,IL-10 and PCT for predicting GNB infection were 0.75 (95％CI 0.72-0.78),0.82 (95％CI 0.79-0.85) and 0.67 (95％CI 0.63-0.70),respectively.(4) The predictive power of IL-6,IL-10 and PCT combination (AUC=0.994) was superior to IL-10 alone (AUC=0.810) in predicting septic shock (Z=10.211,P＜0.01).Conclusions IL-6and IL-10 are better predictors of GNB infection than PCT in hematology-oncology children.Furthermore,the combination of these two cytokines and PCT is more valuable in predicting the severity of infection.