Effect of miR-125b on T Cell Activation in Aplastic Anemia by Targetting B7-H4 / 中国实验血液学杂志

OBJECTIVE@#To investigate the effect of miR-125b on T cell activation in patients with aplastic anemia (AA) and its molecular mechanism.@*METHODS@#A total of 30 AA patients were enrolled in department of hematology, Binzhou Medical University Hospital from January 2018 to October 2021, as well as 15 healthy individuals as healthy control (HC) group. Peripheral blood mononuclear cells (PBMCs) were isolated, in which the levels of miR-125b and B7-H4 mRNA were detected by RT-qPCR. Immunomagnetic beads were used to separate naive T cells and non-naive T cells from AA patients and healthy people to detect the levels of miR-125b and B7-H4 mRNA. Lentivirus LV-NC inhibitor and LV-miR-125b inhibitor were transfected into cells, and T cell activation was detected by flow cytometry. The dual-luciferase reporter gene assay was used to detect the targetting relationship between miR-125b and B7-H4. RT-qPCR and Western blot were used to detect the levels of miR-125b, CD40L, ICOS, IL-10 mRNA and B7-H4 protein.@*RESULTS@#Compared with HC group, the expression of miR-125b was up-regulated but B7-H4 mRNA was down-regulated in PBMCs of AA patients (P <0.05), and the proportions of CD4+CD69+ T cells and CD8+CD69+ T cells in PBMCs of AA patients were higher (P <0.05). The expression of miR-125b was significantly up-regulated but B7-H4 mRNA was down-regulated in both naive T cells and non-naive T cells of AA patients (P <0.05), and non-naive T cells was more significant than naive T cells (P <0.05). Compared with NC inhibitor group, the expression of miR-125b was significantly decreased, the expression level of CD69 on CD4+ and CD8+ T cells in PBMCs was also significantly decreased, while the luciferase activity was significantly increased after co-transfection of miR-125b inhibitor and B7-H4-3'UTR-WT in the miR-125b inhibitor group (P <0.05). Compared with NC inhibitor group, the mRNA and protein levels of B7-H4 were significantly increased in the miR-125b inhibitor group (P <0.05). Compared with miR-125b inhibitor+shRNA group, the expression levels of CD69 on CD4+ and CD8+ T cells were significantly increased, and the levels of CD40L, ICOS and IL-10 mRNA were also significantly increased in the miR-125b inhibitor+sh-B7-H4 group (P <0.05).@*CONCLUSION@#MiR-125b may promote T cell activation by targetting B7-H4 in AA patients.

Hypercoagulable state in patients with multiple myeloma / 中国实验血液学杂志

<p><b>OBJECTIVE</b>This study was to detect the plasma thrombomodulin (TM), D-dimer and fibrinogen in patients with multiple myeloma (MM) and to analyze their relationship with morbid state, and also to investigate the relationship of the expression of coagulation factor with the ratio of myeloma cells.</p><p><b>METHODS</b>ELISA was used to detect the TM level in 45 cases of MM at different stages. The plasma level of D-dimer and fibrinogen was detected by STA automatic coagulation analyser.</p><p><b>RESULTS</b>The level of plasma TM in newly diagnosed patients was higer than that in normal control group and in platform stage group (P < 0.01; P < 0.05). There were significant differences between relapsed or refractory group and normal control group or those reached platform stage group (P < 0.05). Meanwhile, the level of plasma TM in the group of thalidomide combined with chemotherapy was higer than that in newly diagnosed patients (P < 0.05). The level of plasma D-dimer and fibrinogen of MM patients was higher than that in normal controls (P < 0.01;P < 0.05). The expression of D-Dimer in relapsed or refractory group reached the maximum. Also, the level of plasma D-Dimer in group of thalidomide combined chemotherapy was higer than in newly diagnosed patients (P < 0.05). The expression of coagulation factor did not correlate with the ratio of myeloma cells.</p><p><b>CONCLUSIONS</b>Level of plasma TM, D-Dimer and fibrinogen of MM patients is higher than that in control group. The level of plasma TM and D-Dimer can be elevated when thalidomide used, which indirectly suggested the tendency for thrombosis in MM patients.</p>

A double labial-arch retaining appliance after correction of Class III osteal malocclusion / 华西口腔医学杂志

A double labial-arch retaining appliance to retain the treatment effective of Class III osteal malocclusion were introduced and used to retain 60 patients with Class III osteal malocclusion. At the same time, 60 patients with Class III osteal malocclusion were retained with conventional Hawley retainer as the control group. The results indicated that the double labial-arch retaining appliance has good effect to the retain of Class III osteal malocclusion.

Effect of time and pressure factors on the cupping mark color / 中国针灸

<p><b>OBJECTIVE</b>To investigate the effects of the factors of time and pressure during cupping treatment on the cupping mark color, so as to provide scientific data and evidence for study on parameters and effect of cupping treatment.</p><p><b>METHODS</b>Orthogonal experimental design was used with 12 stimulating parameters on 3 time levels and 4 pressure levels, cupping was given at 12 sites on the back of a same healthy subject, and 34 persons/times were completed in the experiment. The cupping mark color at each site was assessed 24 hours after cupping with a cupping mark color atlas, and the change law of cupping mark color was analyzed.</p><p><b>RESULTS</b>There was a significant difference for the different parameters (P < 0.01). The time factor had statistically significant effect on cupping mark color (P < 0.05), showing 10 min >30 min >20 min. The effect of pressure factor on cupping mark color was significant (P < 0.01), showing -0.07 MPa > -0.06 MPa > -0.05 MPa > -0.04 MPa.</p><p><b>CONCLUSION</b>The stimulation of 10 minutes and the pressure of -0.04 MPa produces a marked ecchymosis on the cupping site, getting darker and darker along with increase of the stimulation intensity; the effect of pressure factor on cupping mark color is the largest with a linear relationship, which can be expressed as Y (cupping skin color) = 2.025 + 0.902 x 100 x negative pressure absolute value (-MPa); while the effect of time factor on cupping mark color is more complicated, which is possibly related with the cupping site.</p>

Talk about nomenclature of twelve meridians from quantitative yin-yang theory / 中国针灸

Based on leads provided by Neijing and other literature, analyze origins of the three-yin and the three-yang and the their respective contents of yin and yang, indicating the principle that the order of yang-qi from more to less is Yang ming, Tai yang, Shao yang, and the order of yin-qi is Tai yin, Shao yin, Jue yin. According to the location of five (six) zang-organs, respective yin-qi content is defined, and according to the principle of more yin-qi matches more, and less yin-qi matches less, five (six) zang-organs match each other. The zang-organs above the diaphragm joints with The Hand-Channels and the zang-organs below the diaphragm with The Foot-Channels, completing the nomenclature of twelve meridians. The names of the six yang-channels correspond to the yin-channels of the exterior-interior relationship, the yin-channels link with hands (feet), and the yang-channels also link with hands (feet), and the amount of yin-qi of the zang-organs corresponding to the yin-channels and the amount of yang-qi of the fu-organs corresponding to yang-channels are in a state of balance. Based on this principle, nomenclature of six channels are completed. Emphasize that the nomenclature of twelve meridians contains profound TCM theories, especially, TCM, by yin-yang, three-yin and three- yang, illustrates living phenomena from the whole to the system and organ level in human body, and the scientific principle "yin-yang can be unlimitedly divided" and its significance, which must guide the studies on living phenomena with modern life sciences from the whole to the molecular level.

Manipulation methods of slow-rapid reinforcing-reducing method / 中国针灸

After consulting literature, following the original meaning of the paper about slow-rapid reinforcing-reducing method in Huangdi's Internal Classic, in combination with explanation of later ages, and comprehension and clinical experience of the authors, it is put forward that the slow-rapid reinforcing-reducing method in Huangdi's Internal Classic is not single manipulation method, but it is a guiding principle for reinforcing-reducing manipulation, it includes many manipulation methods and they were listed, and all of the reinforcing-reducing methods of later ages are developed from these. In the teaching material Acupuncture and Moxibustion Sciences they are included in single reinforcing-reducing method, reducing extension and intension of this definition. The relative description in the teaching material only is slow-rapid reinforcing-reducing method of narrow sense, but the manipulations can be divided into qi-carrying manipulating needle type and three-one pushing-pulling type.