Serious adverse events associated with chemotherapy in children with acute lymphoblastic leukemia / 中国当代儿科杂志

OBJECTIVE@#To study the occurrence of serious adverse events (SAEs) related to chemotherapy with CCCG-ALL-2015 regimen in children with acute lymphoblastic leukemia (ALL) and the risk factors for death after the SAEs.@*METHODS@#A retrospective analysis was performed on the medical data of 734 children with ALL. They were treated with CCCG-ALL-2015 regimen from January 2015 to June 2019. The occurrence of SAEs during the treatment was investigated. The children with SAEs were divided into a death group with 25 children and a survival group with 31 children. A multivariate logistic regression analysis was used to analyze the risk factors for death after the SAEs.@*RESULTS@#Among the 734 children with ALL, 56 (7.6%) experienced SAEs (66 cases) after chemotherapy, among which 41 cases occurred in the stage of remission induction therapy. Of all 66 cases of SAEs, 46 (70%) were infection-related SAEs, including 25 cases of septic shock (38%), 20 cases of severe pneumonia (30%), and 1 case of severe chickenpox (2%), and 87% of the children with infection-related SAEs had neutrophil deficiency. The most common infection sites were blood and the lungs. The most common pathogens were Gram-negative bacteria, viruses, fungi, and Gram-positive bacteria. There were 16 cases (24%) of hemorrhage-related SAEs, with 11 cases of gastrointestinal bleeding (17%), 4 cases of pulmonary bleeding (6%), and 1 case of intracranial bleeding (2%). Of all 734 children with ALL, 66 (9.0%) died, among whom 25 died due to SAEs. The treatment-related mortality rate was 3.4%, and infection (72%) and bleeding (24%) were the main causes of death. Severe pneumonia was an independent risk factor for treatment-related death in ALL children (OR=4.087, 95%CI: 1.161-14.384, P=0.028).@*CONCLUSIONS@#SAEs often occur in the stage of remission induction therapy, and infection-related SAEs are more common in ALL children accepting chemotherapy with CCCG-ALL-2015 regimen. The development of severe pneumonia suggests an increased risk for death in these children.

Effect of CDK Inhibitor LS-007 on Acute Lymphoblastic Leukemia and Its Mechanism / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To study the effect of cyclin dependent kinase(CDK) inhibitor LS-007 on acute lymphoblastic leukemia and its mechanism.</p><p><b>METHODS</b>The acute lymphocytic leukemia cell line was cultured and treated by LS-007, flavopiridol and ABT-199, then the changes of apoptosis-related factor mRNA and protein levels were detected by using mRNA quantitative PCR and Werstern blot.</p><p><b>RESULTS</b>quantitative PCR and Western blot detection showed that the levels of antiapoptotic protein decreased significantly in acute lymphoblastic leukemia cells after LS-007 treatment, and the pro-apoptotic effect of LS-007 combined with ABT-199 was much better.</p><p><b>CONCLUSION</b>LS-007 can affect the phosphorylation of RNA polymerase sites and promote cell apoptosis through changing the activities of CDK, thus having some positive significance for relieving acute lymphoblastic leukemia.</p>

Discussion about the application of risk management to medical devices / 中国医疗器械杂志

Safety and effectiveness of medical devices is a focus of people's attention, which is also a central work for the government's administration. Carrying out safety standards of medical devices, implementing the quality system standards and risk management standards are supplemented with each other. The risk management is an indispensable part to the quality management system of medical devices.

A pilot study on the quality management system of in-vitro diagnostic reagents / 中国医疗器械杂志

This article makes a pilot study on the key points of the quality management system of in-vitro diagnostic reagents by analyzing the technical characteristics and production methods of these products as well as the status in quo, and problems the in-vitro diagnostic reagent industry in China is facing nowadays. It can serve as a reference to the supervision departments and the manufacturers in this field which are establishing and running the quality management system.

Studies on administration of in-vitro diagnostic reagents / 中国医疗器械杂志

This article introduces the definition, classification, premarket admission and other administering specialities about In-Vitro Diagnostic Reagents in the U.S.A. and China. And by analyzing manufacture and administration of In-Vitro Diagnostic Reagents in our country, It is pointed out that a suitable administering model in accordance with the characteristics of In-Vitro Diagnostic Reagents should be adopted to perfect the administration.