1.Anticancer effect of lupeol, a triterpene
Journal of International Oncology 2012;39(2):113-116
Lupeol,a triterpene,is found in various edible and medicinal plants.Lupeol has been shown to exhibit strong anti-inflammatory,anti-arthritic,gene mutation prevention and anti-malarial effect.Recently,it is found that lupeol is the main active ingredients of inhibiting the growth of a several kinds of cancers and carcinomas in some antineoplastic plants.Lupeol has antineoplastic effect.
2.The analysis of risk factor and the establishment of pre-operation warming score system for infection after intracavity lithotripsy in upper urinary tract calculi
Zesong YANG ; Liefu YE ; Minxiong HU ; Yun HONG ; Deng LIN ; Youcheng LIN ; Songmao CHEN
Chinese Journal of Urology 2016;37(10):781-785
Objective To discuss the risk factor of infection after intracavity lithotripsy in upper urinary tract calculi,and establish a pre-operation warming score system.Methods From Jan.2013 to May 2016,412 upper urinary calculi patients who underwent intracavity lithotripsy were analyzed to evaluate the associated risk factors before operation and infection after operationg by non-conditional logistic regression analysis.The pre-operation warming score system was established by giving those risk factor 1-4 point based on OR value.The best threshold was then determined by ROC curve.Results Diabetes mellitus,infection history,renal calculus and uretero-pelvic junction calculus,stone burden,the degree of hydronephrosis and the gender of female were high-risk factors contributed to infection after intracavity lithotripsy,which were given 3,3,3,2,2,2point respectively based on their OR value(8.660,7.046,3.723,2.675,2.256,1.891),and the patients who got high socre were more likely to suffered infection.The sensitivity and specificity of the wanning score system for infection after intracavity lithotripsy were 74.3% and 84.0% respectively when its truncation point was 7.5 point(total score was 15 piont).Conclusions Patients who got more than 7.5 point according to the wanning score system were high risk groups of infection after intracavity lithotripsy.
3.Application of expanding coronal decompressive craniectomy and sequential dural incision for treating patients with severe bilateral frontal contusion
Youcheng LIN ; Guofeng YAN ; Hao YAO ; Weipeng LU ; Zhaozhi SU ; Guorong DING ; Ruihong HUANG ; Lianfu XIAO
Chinese Journal of Postgraduates of Medicine 2012;35(14):14-16
ObjectiveTo explore the effect of combined usage of expanding coronal decompressive craniectomy and sequential dural incision for treating severe bilateral frontal contusion (SBFC).Methods Forty-three patients with SBFC were randomly divided by sequential single day after hospitalization into two groups.Observation group(23 cases) treated with expanding coronal decompressive craniectomy and sequential dural incision.Control group (20 cases) treated with standard hemicraniectomy and routine dural incision.ResultsThe occurrence rate of acute cephalocele was significantly lower in observation group [ 17.4%(4/23) ] than that in control group [ 55.0%(11/20) ] (P < 0.05).According to Glasgow outcome scale (GOS) score of six-month observation after operation,17 cases(73.9%,17/23) of observation group got favourable recovery or moderate deficit,other 6 cases(26.1%,6/23) got severe deficit,persistent vegetative status or death.While only 8 cases(40.0%,8/20) got favourable recovery or moderate deficit,12 cases ( 60.0%,12/20 ) got severe deficit,persistent vegetative status or death in control group.The rate of favourable recovery and moderate deficit of two groups had statistical significance (P < 0.05).ConclusionCombination application of expanding coronal decompressive craniectomy and sequential dural incision is an effective method to treat patients with SBFC,and can obviously improve the rate of successful rescue and decrease the rate of mortality and disability.
4.Association of ABO genotype with acute rejection in renal transplantation
Lixin YU ; Youcheng LIN ; Wenfeng DENG ; Yibin WANG ; Junsheng YE ; Yun MIAO ; Lulu XIAO
Chinese Journal of Urology 2010;31(12):814-817
Objective To investigate a possible association of donor-recipient compatibility for ABO blood group alleles with acute rejection (AR) in renal transplantation. Methods A study comprising 87 pairs of donor and recipient was performed. The ABO genotype A1, A2, O1, O2, and B alleles of renal transplanted recipients and their respective donors were assessed by PCR amplification with sequence-specific primers (PCR-SSP). Accordingly, recipients were divided into donor-recipient ABO genotype matched and mismatched groups. Results The PCR-SSP based types of all cases showed total concordance with their serologically assigned ABO groups. Fifty pairs (57. 5%) were matched for ABO genotype among the 87 pairs of donor and recipient while 37 (42. 5%) were mismatched, including 1 allele mismatch in 31 pairs (83.8%), 2 alleles mismatches in 6 pairs (16. 2%).The incidence of AR was 12.0% (6 cases) and 29. 7% (11 cases) for ABO genotype matched and mismatched transplant patients, respectively ( P < 0.05). After high dose methylprednisolone (MP)treatment, all cases exepienced reversion of AR except a A2O1 recipient receiving kidney from a A1O1enced 4 AR episodes within 3-10 months, and the period of AR was gradually shortened. After high dose MP was administered empirically, even though short-term improvement of renal function was observed, the serum creatinine continued to increase progressively with decreased efficacy of high dose MP. One year after operation the serum creatinine rose to 441 μmol/L. Conclusions Simultaneous definition of the ABO genotype and HLA is highly feasible. The A2 patient is suitable for receiving kidneys from blood group O donors. DNA mismatch for ABO genotype of renal transplant recipients and their respective donors is an independent risk factor for AR. Genotyping of ABO blood group is conducive to prevent AR.
5.Andrographolide regulates SLC7A11/GPX4 axis in ferroptosis to attenuate intestinal injury in sepsis
Ming HUANG ; Yixin ZHANG ; Guodong CAO ; Youcheng ZENG ; Liang LIN ; Xiaoyue WANG ; Qinghong CHENG
Acta Universitatis Medicinalis Anhui 2023;58(12):2094-2100
Objective To investigate whether Andrographolide(AG)can alleviate intestinal injury in sepsis by ac-tivating the SLC7A11/GPX4 axis in ferroptosis.Methods Forty rats were randomly divided into sham group(sham group),sepsis group(CLP group),AG low,medium and high dose groups(5,10 and 20 mg/kg).HE staining was used to observe the pathological changes of Intestinal tract.ELISA method was used to determine Inter-leukin 6(IL-6),tumour necrosis factor α(TNF-α),intestinal fatty acid binding protein(I-FABP),D-lactate content.The mechanism of ferroptosis was explored with AG high dose group(AG20 group),forty rats were ran-domly divided into sham group,CLP group,ferroptosis inhibitor(Fer-1)group,AG20+Fer-1 group.HE staining and transmission electron microscopy were used to observe the pathological changes of Intestinal tract.The kits were used to determine oxidative stress MDA,GSH levels and Fe3+content.Western blot was used to detect the protein levels of solute carrier family 7 member 11(SLC7A11),glutathione peroxidase 4(GPX4),and ferritin heavy poly-peptide 1(FTH-1).Results Compared with the sham group,the CLP group showed severe morphological damage to the small intestine,with significantly higher levels of inflammation,I-FABP and D-lactate(all P<0.05),the AG group reversed these changes in a concentration-dependent manner(all P<0.05).Compared with the CLP group,the AG20 and Fer-1 groups showed improved pathological damage to the small intestine,with lower levels of MDA and Fe3+and higher levels of GSH,SLC7A11,GPX4 and FTH-1 protein expression increased(all P<0.05),and pathological injury and oxidative stress were reduced in the AG20+Fer-1 group,and SLC7A11,GPX4 and FTH-1 protein expression increased more significantly(all P<0.05).Conclusion The mechanism by which AG attenuates intestinal injury in sepsis may be related to SLC7A11/GPX4 axis activation in ferroptosis.
6.H2S attenuates sepsis-induced cardiomyopathy by regulating the Xc -/ GPX4 pathway in ferroptosis
Guodong Cao ; Feifei Deng ; Yuhan Zhao ; Youcheng Zeng ; Liang Lin ; Lichun Guo ; Xiqing Luo ; Yixin Zhang ; Ming Huang ; Qinghong Cheng
Acta Universitatis Medicinalis Anhui 2022;57(12):1959-1964
Objective :
To investigate whether NaHS,a hydrogen sulfide donor,can improve myocardial injury in sepsis by inhibiting oxidative stress and activating the Xc -/ GPX4 signaling pathway in ferroptosis.
Methods :
Lipopolysacc-haride(LPS) induced H9c2 in rat cardiomyocytes to form an in vitro model of myocardial injury in sep- sis,which was divided into Control group,LPS group and LPS + NaHS group.The kits were applied to detect the changes of cardiomyocyte viability,Fe2 + ,LDH and CK-MB,determine the levels of oxidative stress indexes GSH and MDA,detect the changes of cellular ROS and mitochondrial membrane potential levels by fluorescent probes, and detect the expression levels of ferroptosis regulatory proteins SLC7A11 and GPX4 by Western blot.
Results:
Compared with the Control group,H9c2 cell viability decreased,Fe2 + concentration increased ,GSH ,MDA and ROS levels increased,mitochondrial JC-1 monomer increased ,expression levels of ferroptosis regulatory proteins SLC7A11 and GPX4 decreased,and cell damage increased after LPS stimulation (P<0. 05) .Compared with the LPS group,NaHS attenuated LPS-induced H9c2 cell injury and elevated Fe2 + concentration,decreased the level of LPS-induced oxidative stress in H9c2 cells ,and increased the expression levels of ferroptosis regulatory proteins SLC7A11 and GPX4 (P<0. 05 ) .
Conclusion
The mechanism by which NaHS attenuates myocardial injury in sepsis may be related to the inhibition of oxidative stress and activation of the Xc -/ GPX4 signaling pathway in fer- roptosis.