1.Research advances of PI 3 K/Akt/mTOR signaling pathway with its related gene mutations and the targeted therapy for endometrial cancer
Chuchu CAO ; Luren HUANG ; Fen FU
Basic & Clinical Medicine 2017;37(1):118-122
Endometrial cancer ( EC) is one of the most common gynecological cancer ,of which the molecular biolog-ical mechanisms is very complex .In recent years, it has been reported that the abnormally regulated PI 3K/Akt/mTOR signaling pathway is significantly related with endometrial cancer .The mutation and abnormal activation of the receptors and kinase of the PI 3 K/Akt/mTOR signaling pathway is a potential therapeutic target of endometrial cancer .
2.Infective endocarditis in children:analysis of risk factors and pathogenic feature
Qing CAO ; Yunfang ZHOU ; Fen LI
Chinese Pediatric Emergency Medicine 2008;15(3):238-240
Objective To investigate pediatric infective endocarditis(IE) risk factors and the feature of pathogen.Methods We conducted a retrospective study of 46 cases who were diagnosed as IE from January 2000 to June 2007.Sixteen variables such as sex,primary disease,infectious site,complication,culture result and therapeutic measure were selected for logistic regression analysis.Results Forty-six IE patients accounted for 0.78‰ of all the hospitalized patients during the same period.Of 46 cases,40 had heart diseases.The incidence rate of left-sided endocarditis was higher than that of right-sided endocarditis.Twenty-four had positive blood culture result,one patient had positive culture from vegetation sample.The total positive culture rate was 54%.Gram-positive bacteria were found in 15 cases,and the most common organisms were α-hemolytic streptococcus.Gram-negative bacteria were in 7 cases and fungus infection was present in 3 cases.After antiboitic treatment,40 were cured,6 died.In the logistic regression model,the variables significantly associated with death included negative blood culture (OR=25.127,95%CI=1.110-363.236),hematological system disease (OR=28.620,95%CI=2.261-354.448) and multiple organ failure (OR=19.843,95%CI=0.786-221.754).Conclusion Streptococcus viridans is the most common pathogen in pediatric IE in our hospital.Higher incidence in the left heart than that in the right heart is found.Negative blood culture,hematological system disease and MOF are the risk factors in IE patients.
4. Effects of different doses of methamphetamine on spatial learning and memory in mice and the mechanism
Journal of Xi'an Jiaotong University(Medical Sciences) 2019;40(4):559-563
Objective: To investigate the different-dose effects of methamphetamine (METH) on spatial learning and memory and the possible mechanisms. Methods: C57BL/6 mice were treated with 0.5, 1.0 and 2.0 mg/kg of METH or normal saline. The drug was injected intraperitoneally 30 min prior to the Morris water maze. All mice experienced 5 consecutive days' positioning navigation experiment and the spatial exploration experiment conducted 24 hours after the last training trial. Immediately after the probe test, the mice were killed by cervical dislocation and the hippocampus was dissected. Western blot was used to detect changes in phosphorylation levels of extracellular signal-regulated kinase (ERK1/2) and cAMP response element-binding protein (CREB) in the hippocampus. Results: Compared with the mice in saline group, those in 1.0 mg/kg METH group had a significantly shorter latency (P<0.05), spent more time in the target quadrant (P<0.05), and had more platform site crossings (P<0.05). Moreover, 0.5 and 2.0 mg/kg of METH did not significantly affect the mice's spatial learning and memory, but 0.5 mg/kg of METH showed a memory-promoting trend, while 2.0 mg/kg of METH showed a memory-destroying trend. METH of 1.0 mg/kg significantly increased p-ERK1/2 (P<0.05) and p-CREB (P<0.05) levels in the hippocampus. Conclusion: METH of 1.0 mg/kg significantly improved mice's spatial learning and memory. The effect of METH is an inverted U-curve among three doses of METH at 0.5, 1.0 and 2.0 mg/kg. ERK1/2 and CREB in the hippocampus may be involved in METH-induced improvement of spatial learning and memory in mice.
5.Effects of okadaic acid on voltage-gated potassium and calcium channels in cultured rat trigeminal neurons
Hong XIE ; Xuehong CAO ; Zhangyin MING ; Xuesong CAO ; Gang LEI ; Fen LI ; Changjin LIU ; Lieju LIU
Chinese Journal of Pharmacology and Toxicology 2007;21(5):369-376
AIM To investigate the effects of serine/threonine protein phosphatases in regulation of cell signal transduction on voltage-gated potassium and calcium channels in cultured rat trigeminal ganglion (TRG) neurons. METHODS Whole-cell patch clamp technique was used to record the potassium and calcium currents from adult rat TRG neurons before and after perfusion of okadaic acid, a potent inhibitor of the serine/threonine protein phosphatases 1 and 2A. RESULTS Okadaic acid 1 μmol·L-1 inhibited transient outwards potassium currents (IA) by 28.6%, increased delay rectified potassium currents (IK) and calcium currents (ICa) by 22.7% and 20.0%, respectively. okadaic acid 1 μmol·L-1 produced significant hyperpolarizing shifts in the conductance-voltage (G-V) curves and inactivation curves of IA , also produced significant hyperpolarizing shifts in the G-V curves of IK, while it had no effect on the activation and inactivation kinetics of ICa. CONCLUSION Serine/threonine protein phosphatases 1 and 2A may be involved in the modulation of voltage-gated potassium and calcium channels on rat TRG neurons. In addition, voltage-gated potassium and calcium channels show different dependence on the dephosphorylation reactions of PP1 and PP2A phosphatases.
6.Investigation of survival situation of senile people' s home caregivers in Hangzhou city
Jian-Xun CAO ; Xue-Ping CHEN ; Tian-Wu JIANG ; Fen-Fen WANG ; Pei JIANG
Chinese Journal of Modern Nursing 2012;18(2):139-142
Objective To study the survival situations,care skill,social support and demand condition of senile people with home care.Methods Many methods were used such as self-designed questionnaire,social support scale,interview and so on.Cluster sampling was used and totals of 202 hone caregivers of senile people from eight communities,old town of Hangzhou city were selected and were investigated with questionnaire in their homes and interviewed by face to face,then,the status of survival and care of home care-givers was analysed.Results Children(52.5% ) and spouses( 12.5% ) were main caregivers,65.8% caregivers provided 24 hours care,10.4% caregivers believed that the seriously effect of care work was sleeping,25.2% caregivers believed that they could not treated with senile person' s unusual mental well.The male score of social support was (29.02 ±5.51 ) and female was(27.50 ± 5.37 ),and the difference was statistically significant (t =1.906,P <0.05 ).Conclusions Community nurse and health manager should pay attention and assessment on the caregivers'needs and wishes,and provide feasible and appropriate social support service for caregivers.
7.Clinical observation on xiehuo yangyin powder in treating 30 initial stage of toxic and diffuse goiter patients.
Xue-mei LI ; Yong-fen CAO ; Juan YANG
Chinese Journal of Integrated Traditional and Western Medicine 2003;23(11):829-831
OBJECTIVETo observe the therapeutic effect of Xiehuo Yangyin powder (XHYY) in treating the initial stage of toxic and diffuse goiter (Graves' disease).
METHODSSixty patients were randomly divided into two groups, the treated group (n = 30) was treated with XHYY and methimazole, while the control group (n = 30) was treated with methimazole alone. The TCM syndrome score and thyroxin level in the two groups were compared and analyzed before, and 2 weeks, 12 weeks after treatment.
RESULTSThe syndrome score and thyroxin level in the treated group 2 weeks, 4 weeks, 12 weeks after treatment were reduced in comparing with before treatment, with the improvement better than those in the control group in the corresponding stages (P < 0.05).
CONCLUSIONThe Chinese herbal medicine XHYY plus methimazole, in treating Graves' disease, could rapidly and effectively improve the patients' clinical symptoms and lower the thyroxin level, reduce the daily taken of methimazole.
Adolescent ; Adult ; Aged ; Antithyroid Agents ; therapeutic use ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Graves Disease ; blood ; drug therapy ; Humans ; Male ; Methimazole ; therapeutic use ; Middle Aged ; Phytotherapy ; Powders ; Thyroxine ; blood
8.Role of autophagy and proteasome degradation pathways in apoptosis of PC12 cells transfected with A53T α-synuclein
Fang YANG ; Yaping YANG ; Biyin CAO ; Chengjie MAO ; Zenglin CAI ; Fen WANG ; Jijun SHI ; Chunfeng LIU
Chinese Journal of Neurology 2009;42(4):258-262
Objective To explore the specific role of autophagy and ubiquitin-proteasome pathway in apoptosis, specific protease inhibitor and (or) macroautophagy inhibitors.Methods The stimulators were selected to work on the pheochromocytoma (PC12) cell lines transfected with human mutant α-synuclein (A53T).Cell activity and apeptosis rate were detected by MTT law and flow cytometry.NO energy, heat shock protein 70 (Hsp70) and Caspase-3 expression were determined in cell culture.Results A53T cell survival rate significantly decreased 24 hours after handling with the protease inhibitor (100 nmol/L) and (or) autophagy inhibitors 3-MA (10 mmol/L, A =0.23±0.01,0.19±0.01 and 0.17±0.01 respectively; P <0.05) compared with the control group (A =0.32±0.06).Cell survival rate was significantly higher than the other drug group after 24 hours handling with autophagy stimulators (A =0.44±0.08).Compared with the control group or autophagy stimulator of rapamycin (0.2 μg/ml) group (1.55%±1.15%), A53T cells apeptosis percentage rate was significantly higher after treated with proteasome inhibitor and macroautophagy inhibitors 24 hours (4.74%±0.91%, 4.59%±1.18% and 5.40%±1.75%respectively, P <0.05); and a slight decrease with stimulators.Protein Hsp70 and NO were significantly higher in proteasome inhibitor groups than the control group.But in antophagy inhibitor and stimulator group, NO and Hsp70 protein was similar to the control group.Conclusion The inhibition of macroautophagy and proteasome can promote apoptosis.Inhibiting or stimulating autophagy has less impact on Hsp70 and NO than proteasome pathway.
9.Analysis of the factors affecting the occurrence of myopia in children with myopia
Can, ZHAO ; Qiu-Jie, XUE ; Xiao-Fen, LIU ; Wen-Jie, CAO ; Li-Li, SUN
International Eye Science 2017;17(10):1921-1924
AIM: To analyze the electronic product use time, writing time, playing piano time and outdoor activity time and the distribution of myopia in 586 cases of school age children in our hospital. ·METHODS: A retrospective analysis of 586 cases of children aged 6 to 12 years old in the outpatient department was established. Personalized files were used to record the uncorrected visual acuity, optometry, slit lamp, fundus mirror and strabismus. The cumulative use time of electronic products ( including computer, mobile phone, iPad) , writing time, whether to play the piano and outdoor activities time with the eye situation were recorded. Statistical analysis of the age group of myopia, the cumulative use of electronic age in different age groups, writing time, whether playing piano and outdoor activities and the distribution of myopia occurred. · RESULTS: ( 1 ) With the increasing of age, the distribution of uncorrected eyesight was in children mostly mild myopia, and the proportion of mild myopia was significantly higher than that of moderate and high myopia. ( 2 ) Electronic products use time distribution:the proportion of playing electronic products ( including mobilephone, computers, iPad) accounted for 76. 8%, of which 9 years old, 10 years old the cumulative use of electronic products with a long time was higher than other age groups. ( 3 ) Distribution of writing time: the proportion of write homework ≤1h was significantly lower than the proportion of writing homework > 1h (37. 2% vs 62. 8%), of which 9 and 10 years old children cumulative write time was higher than other age group. ( 4 ) Distribution of playing the piano: the proportion of playing piano time less than 1h was significantly higher than the proportion of playing piano time more than 1h ( 89. 1% vs 10. 9%). ( 5 ) Distribution of outdoor activities: the proportion of outdoor activities ≤1h in children at school age was significantly higher than that of outdoor activities > 1h (91. 8% vs 8. 9%). ·CONCLUSION: With the age exposure to electronic products becoming younger, heavy learning tasks and less outdoor activities, myopia occurred in advance of age. So health examination and eye guidance, reducing the amount of work appropriately, increasing outdoor activities will slow the development of early childhood myopia.
10.Gas analysis of umbilical cord artery blood on predicating the prognosis of asphyxia neonate
Qi CAO ; Ge PAN ; Jinli MO ; Xiao HE ; Changliang NONG ; Fen HUANG
Clinical Medicine of China 2016;32(8):681-684
Objective To study the gas analysis of umbilical cord artery blood and radial artery blood on predicating the prognosis of asphyxia neonate?Methods From September 2014 to September 2015, 328 neonates were divided into groups by Apgar score:290 patients in the control group and 27 patients in the mild asphyxia group,11 patients in the severe asphyxia group?After birth,umbilical artery blood,radial artery blood gas analysis was perfomed, oxygenation index was calculated, Outcome of neonatal behavioral neurological assessment ( NBNA) in neonates with asphyxia was regular follow?uped,the relationship between pH value and umbilical artery blood gas analysis was analyzed?Results The pH, PO2, PCO2 and oxygenation index of umbilical cord blood and radial artery blood in the severe asphyxia group was(7?11±0?25,(73?93±23?35) mmHg,(51?36±16?37) mmHg,206?23±98?12),significant different than the mild group(7?24±0?05,(86?35 ±12?56) mmHg,(45?89± 9?21) mmHg,411?22±57?94) and the control group(7?28±0?08,(87?80±12?07) mmHg,(43?68± 6?45) mmHg,426?23±73?30)(P<0?05)?The pH,PO2,PCO2 and oxygenation index of umbilical cord blood and radial artery blood in the severe asphyxia group was(7?25±0?18,(74?66±24?09) mmHg,(51?42±17?83) mmHg,332?03±65?19),significant different than the mild group(7?31±0?09,(87?24 ±11?75) mmHg,(45?73±10?21) mmHg,405?67±82?65) and the control group(7?32±0?06,(87?99±11?81) mmHg,(42?84± 9?32) mmHg,439?89±60?76)(P<0?05)?The NBNA scores of the severe asphyxia group was (34?09±5?02) points,lower than the mild group(36?62±2?04)(F=21?65,P<0?05)?The NBNA scores showed significant relationship with umbilical cord blood pH in the severe asphyxia group( r=0?877,P<0?01)?Conclusion The pH,PO2 and oxygenation index of umbilical cord blood and radial artery blood was lower while PCO2 was markedly high in the severe asphyxia group than other groups?For neonates, there is a correlation between umbilical cord blood pH and NBNAs core, neonates borned with hypoxia and acidosis should monitor blood gas analysis and oxygenation index dynamically

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