Objective To investigate the mecbanism of safflor injection treating myocardial contusion following thoracic impact.Methods Thirty healthy Japan big-ear rabbits were randomly assigned to the myocardial contusion control group (control group,n =15) and safflor injection group (safflor group,n =15).The rabbits with severe myocardial contusion were induced by BIM-Ⅱ Horizontal Bioimpact Machine.Blood samples were taken from common carotid artery of both groups to measure the levels of plasma thromboxance A2 (TXA2) and prostaglandin I2 ( PGI2 ) at 10 minutes before impact and at t0 minutes,30 minutes,1,3,6,12 and 24 hours after impact.Rabbits were dissected to observe the gross and micropathological changes of the hern at 24 hours after impact.Results The control group showed a distinct falling of plasma PGI2 concentration and a significant increase of plasma TXA2 concentration in the early period after severe myocardial contusion.The morphological observation revealed severe myocardial tissue injury as well.However,the safflor group showed insignificant variation pertaining to the reduction of plasma PGI2 concentration and increase of plasma TXA2 concentration,but obvious alleviation of myocardial tissue injury,as compared with the control group.Meanwhile,the ratio of TXB2 to 6- Ketoprostaglandin Fla (6-Keto-PGFla) in the safflor group was lower than that of the control group (P ＜0.05).Conclusion Safflor injection has therapeutic effect on myocardial contusion by elevating the concentration of plasma PGI2 and decreasing the concentration of plasma TXA2 in the early period after severe myocardial contusion.

Cardamonin (2, 4-dihydroxy-6-methoxychalcone, CAR), the main flavonoid that derived from the seed of Alpinia katsumadai, has received growing attention due to a wide range of biological activities, especially for antitumor activities. A series of homologous compounds are synthesized. Previous studies have demonstrated that CAR can inhibit the growth of glioblastoma, Lewis lung cancer, breast cancer, colon cancer, prostate cancer cells and so on. The mechanism underlying the antitumor effects of CAR is involved in the pathways of mammalian target of rapamycin (mTOR), nuclear factor-kappa B (NF-κβ), transglutaminase-2 (tgase-2), endogenous apoptosis, signal transducer and activator of transcription 3 (STAT3), E-cadherin, autophagy, β-catenin, and cell cycle regulation etc. This review summarizes the recent progress in the antitumor activities and mechanisms of CAR and its derivatives.

Background and purpose:The expression of dickkopf homolog 3 gene(DKK3)is always reduced or absent in tumors,instead part of the tumor vascular endothelial expressed DKK3.vWF is a macromolecular glycoprote synthesized and released by vascular endothelial cells and megakaryocytes.However,vWF was also expressed by tumor.The relationship between these 2 factors and the occurrence of cancer is still unclear.The purpose of this study was to observe the expression of DKK3 and vWF proteins in colorectal carcinoma and determine their clinical significance through finding their association with MVD and correlation with each other.Methods:Immunohistochemistry staining was used to detect the expression of DKK3,vWF proteins and MVD in the colorectal carcinoma tissue microarrays that contained 94 colorectal carcinoma specimens.Results:The expression of DKK3 in colorectal carcinoma was lower than or nonexistent compared to that in normal tissues(P＜0.05).The expression of vWF in colorectal carcinoma was higher than that in normal tissues(P＜0.05).Expression of DKK3 and vWF in colorectal carcinoma were not correlated to the age or gender of the patients,invasive depth,or tumor locus of the colorectal carcinoma (P＞0.05).Correlations with the expression of DKK3 and vWF in colorectal carcinoma were only found with differentiation and iynphnode metastasis (P＜0.05).However,the expression of DKK3 and vWF in colorectal carcinoma was not correlated to MVD(P＞0.05).The expression of DKK3 was not correlated to the expression of vWF in coiorectal carcinoma(r=0.1310,P=0.2090).Conclusion:A lowered expression of DKK3 and higher expression of vWF may be associated with the carcinogenesis,various biological behaviors and metastasis of colorecml carcinoma.These 2 factors can be used as important biological markers for colorectal cancer.

BackgroundCompliance of functional exercise has considerable impact on the effectiveness of postoperative rehabilitation among patients with breast cancer. Both symptom burden and hope level of patients are in relation with the compliance mentioned above， but there is limited evidence for the relationship among the three in patients after breast cancer surgery. ObjectiveTo explore the pathway of hope level between symptom burden and functional exercise compliance in patients after breast cancer surgery， with intention to provide references for improving their functional exercise compliance. MethodsFrom March 26 to December 9， 2023， 312 patients who received breast cancer surgery in a tertiary grade A hospital in Sichuan Province were selected as the study objects. Investigation was conducted by adopting scales including the Chinese version of the M. D. Anderson Symptom Inventory （MDASI-C）， the Chinese version of the Herth Hope Scale （HHS-C） and the Functional Exercise Compliance Scale among breast cancer patients after discharge. Pearson correlation analysis was used to examine the correlation among each scale score. Model 4 from the macro program Process of SPSS 25.0 was used to analyze the pathway of hope level between symptom burden and functional exercise compliance. ResultsA total of 308 patients （98.72%） after breast cancer surgery completed effective questionnaire survey. As results showed， MDASI-C score was negatively correlated with scores of HHS-C and functional exercise compliance （r=-0.202， -0.279， P<0.01）， and HHS-C score was positively correlated with score of functional exercise compliance （r=0.453， P<0.01）. The hope level acted as pathway between symptom burden and functional exercise compliance in breast cancer patients after surgery， and the effect value was -0.083 （95% CI： -0.139~-0.009）， accounting for 29.74% of the total effect. ConclusionThe symptom burden of breast cancer patients after surgery can affect their compliance of functional exercise directly and can also indirectly affect the compliance through the level of hope. ［Funded by Nanchong Social Science Research "14th Five-Year Plan" 2022 Annual Project （number， NC22B301）］