Expression of CD56 in Multiple Myeloma Cells and Its Relationship with Extramedullary Disease and Extramedullary Relapse / 中国实验血液学杂志

OBJECTIVE@#To investigate the expression of CD56 in multiple myeloma (MM) cells and its relationship between extramedullary disease and extramedullary relapse.@*METHODS@#Clinical data of 99 patients with MM treated in our hospital from January 2015 to December 2019 was retrospectively analyzed. The patients were divided into positive group and negative group according to the expression of CD56. The relationship between CD56 and multiple myeloma extramedullary disease, extramedullary relapse was analyzed.@*RESULTS@#Among 99 newly diagnosed patients with MM, the positive rate of CD56 was 65%, and the incidence of extramedullary disease of patients in the CD56 positive group was lower than that in the CD56 negative group (17.19% vs 48.57%) (P<0.01). Meanwhile, the incidence of extramedullary relapse of patients in the CD56 positive group was lower than that in the CD56 negative group (1.56% vs 34.29%) (P<0.01).@*CONCLUSION@#CD56 is highly expressed in MM, and its low expression is associated with the occurrence of extramedullary disease and extramedullary relapse, which suggests that CD56 may be an important indicator for predicting the occurrence of extramedullary disease and extramedullary relapse.

Primary Study on Chronic Myeloid Leukemia in NCG Mice from Qinba Mushroom / 中国实验血液学杂志

OBJECTIVE@#The present study was to evaluate the anti-tumor effects of acidic RNA protein complex (FA-2-b-β) extracted from the wild edible Qinba mushroom in inducing of apoptosis and immunoregulation of tumor cell.@*METHODS@#Cell proliferation inducing rate of FA-2-b-β to K562 cell was measured using CCK-8. Apoptosis rate was detected by using flow cytometry. Chronic myeloid leukemia model was developed by tail vein injection/subcutaneous inoculation of K562 cells in NCG mice. The tumor burden of mice was observed. The general condition of the mice was monitored twice daily. The peripherivcal full blood counts of mice was tested daily. RT-qPCR and Western blot was FA-2-b-β performed to determine involvement of apoptotic-related gene and protenin, Immunofluorescence and immunohistochemistry was used to detected the expression of CD3, CD4 and CD8.@*RESULTS@#The proliferation and apoptosis of K562 cell could be inhibitied and induced by FA-2-b-β, there was 100% successful in the tumor formation in vivo, after treated by drug for 21 days there were significantly increased peripheral leucocytes, but decreased hemoglobin of mice treated by FA-2-b-β as compared with those in control group. The CD3, CD4 and CD8 showed positive in mice, and the propotation was imbalance, but it showed reserved after treated by FA-2-b-β.@*CONCLUSION@#FA-2-b-β is strong anti-leukemia effect in vitro and in vivo, suggesting the traditional Chinese medicine maybe contribute to the anti-cancer and immunoregulation research.

Inhibitory Effects of Agaricus Blazei Murrill (FA-2-b-β) on Proliferation of Chronic Myeloid Leukemia Cells in vivo and Its Mechanism / 中国实验血液学杂志

OBJECTIVE@#To investigated the anti-tumor in vivo effect and mechanism of the acid RNA protein complex (FA-2-b-β) of Agaricus blazei Murrill extract.@*METHODS@#CCK-8 method was used to detected the inhibitory effect of FA-2-b-β on proliferation of primary CML cells from newly diagnosed CML patients, the CML mouse model was established by trail-venous injection of primary CML cells, and the survival time, blood cell count and body weight were observed, the immunoflouresence and immunehistochemistry analysis, RT-qPCR, Western bolt were used to detemine the expression of caspase-3 signal pathway-related apoptosis genes and proteins.@*RESULTS@#The experiments in vitro showed that the proliferative inhibitory rate in drug-treated group increased with concentration- and time-dependent manner (r@*CONCLUSION@#The FA-2-b-β can induce apoptosis of primary CML cells and prolong the survival time of CML model mouse, which may be related with the caspase-3 signal pathway related genes and proteins.

Studies on preparation of recombinant hirudin-2 liposome and its pharmacokinetics by nasal delivery in rats / 中国中药杂志

<p><b>OBJECTIVE</b>To promote the nasal absorption of recombinant hirudin-2, the preparation and physicochemical properties of recombinant hirudin-2 liposomes, as well as its pharmacokinetic characteristics and bioavailability in rats after nasal administration were investigated.</p><p><b>METHOD</b>Recombinant hirudin-2 liposomes were prepared by reversal phase evaporation; the test of physicochemical properties including encapsulation efficiency, particle size and stability of liposome suspensions were determined by HPLC; Recombinant hirudin-2 concentration in plasma was determined by chromogenic substrate method and the relative bioavailability and pharmacokinetic parameters were also calculated using software program 3p87.</p><p><b>RESULT</b>The encapsulation efficiency of recombinant hirudin-2 liposome reached greater than 76.95%, with an average particle size of about 168.3 nm, size distribution ranging from 24 to 286 nm, relative peak width of +/- 0.47, and a good stability.</p><p><b>CONCLUSION</b>Compared with recombinant hirudin-2 solution, liposome preparation enhanced the nasal absorption of recombinant hirudin-2.</p>