1.Effects of desflurane on heart rate variability in patients at risk for coronary artery disease
Xiaoguang CHEN ; Junke WANG ; Xiaoguang ZHANG
Chinese Journal of Anesthesiology 1994;0(03):-
Objective To investigate the effect of desflurane anesthesia on the autonomic nervous system in patients at high risk for coronary artery disease.Methods Thirty patients at high risk for coronary artery disease scheduled for elective abdominal operation were selected. Heart rate variability (HRV) was assessed at preoperation, inhalation of 05,10,15 and 20 MAC of desflurane with Holter electrocardiography Results Low-frequency component increased markedly inhaling low concentration of desflurane. With the increase of the concentration of desflurane, both the high-frequency and low-frequency components decreased significantly (P0 05).Conclusions Desflurane balanced anesthesia dose not increase the activity of sympathetic nervous system.
2.Tachycardiomyopathy
Chinese Journal of Applied Clinical Pediatrics 2017;32(1):10-13
Long-term tachycardia may cause tachycardiomyopathy(TCM),clinical manifestation is similar to the dilated cardiomyopathy.But,after treatment,cardiac function can be partially or completely recovered.By the explanation of definition,etiology,pathogenesis,diagnosis and treatment progress of TCM,the aim of the thesis is to enrich the knowledge of clinician about the diagnosis and treatment of TCM.
3.The effects of the policy measures to control the rate of cesarean section in four counties
Chinese Journal of Health Policy 2015;(6):62-67
Objective:To explore the propagable experience and methods of controlling the rate of cesarean sec-tion through the summary of the innovative measures in four counties. Methods:The cases of natural birth and cesare-an section from 2009 to 2013 in four counties were analyzed respectively. The interventions of controlling cesarean section rate have been summarized. Results:The average cesarean section rate of four counties in five years is on the decline, since 2009 the rate were 60. 2%,62. 3%,59. 3%,51. 4%,48. 1%. Conclusions: The interventions really worked, but did not do the best. Improving the social attention on these innovative measures, strengthening surveil-lance mechanism, regulating the medical behaviors of delivery hospitals, enhancing the midwifery training and promo-ting the interventions under the coordination of local government can further reduce the rate of cesarean section.
5.Toxoplasma gondii:Past,Present and Future
Chinese Journal of Parasitology and Parasitic Diseases 1997;0(05):-
Toxoplasma gondii is a globally distributed Apicomplexan Protozoa which can infect all warm-blooded animals and cause serious diseases in immunocompromised host.More attention has been paid to wide distribution and opportunistic pathogenesis of T.gondii.This paper is summarized the history,the lastest hotspots in Toxoplasma and future challenges in toxoplasmosis control.
6.Application of circular dichroism to the study of interactions between small molecular compounds and DNA.
Zhenjia LIU ; Yikang SI ; Xiaoguang CHEN
Acta Pharmaceutica Sinica 2010;45(12):1478-84
Circular dichroism (CD) is an useful technique for monitoring DNA conformation changes resulting from changes in environmental conditions, such as temperature, ionic strength, and pH, and also for the study of the interaction between DNA and ligands (including small molecules and proteins). CD spectroscopy of DNA arises from the asymmetric backbone sugars and by the helical structures often adopted by nucleic acids. By the interpretation of induced circular dichroism (ICD) of ligand signals resulting from the coupling of electric transition moments of the ligand, DNA bases within the asymmetric DNA environment, ligand-DNA interactions, as well as the DNA-binding mode can be assessed. A number of important conclusions have been reported that related to the observed ICD signals resulting from the interactions between intercalators and groove binders with DNA. If short oligonucleotide sequences are used in the study, sequences-specific of binding also can be deduced. CD determination requires smaller amounts of sample, and not limited by the molecular weight or size and can be performed rapidly; though CD is of low resolution, but it's a complement to NMR and X-ray diffraction methods. This review will introduce the characters of the CD spectra of DNA, and its application to the studies of DNA with small molecules; some progress of the studies in our laboratory will also be discussed. CD is expected to be used as a screening method in seeking more DNA-targeted drugs, such as, antineoplastic, antimicrobial and antiviral drugs.
7.Endovascular coiling and microsurgical clipping for the treatment of ruptured intracranial aneurysms:a retrospective case series study
Shihe XIAO ; Zhonghai LIU ; Xiaoguang CHEN
International Journal of Cerebrovascular Diseases 2016;24(1):34-38
Objective To investigate the effectiveness and safety of endovascular coiling and microsurgical clipping for ruptured intracranial aneurysms. Methods Patients w ith ruptured intracranial aneurysm treated w ith endovascular coiling or microsurgical clipping w ere enrol ed retrospectively. The demography, baseline clinical data, outcome, and complications in patients received endovascular coiling and microsurgical clipping w ere compared. Results A total of 85 patients w ith ruptured intracranial aneurysm were enroled, including 40 were treated with microsurgical clipping (surgical clipping group) and 45 were treated w ith endovascular coiling (endovascular coiling group). There w ere no significant differences in the proportions of the patients in male (37.5%vs.40.0%; χ2 =0.056, P=0.813), hypertension (30.0%vs. 33.3%; χ2 =0.109, P=0.742 ), smoking ( 50.0%vs.48.9%; χ2 =0.010, P=0.918 ), drinking (45.0%vs.46.7%; χ2 =0.024, P=0.878), aneurysm site (anterior communicating artery: 50.0%vs. 48.9%;posterior communicating artery:35.0%vs.33.3%; middle cerebral artery:10.0 %vs.11.1%;vertebral artery: 5.0%vs.6.7%; al P>0.05), aneurysm maximum diameter < 10 mm (80.0%vs. 77.8%;χ2 =0.063, P=0.802), Hunt-Hess grade 1-2 (55.0%vs.57.8%; χ2 =0.066, P=0.797), Fisher grade 1-2 ( 60.0%vs.57.8%; χ2 =0.043, P=0.835 ), and time from onset to treatment < 72 h (62.5%vs.64.4%; χ2 =0.035, P=0.853) in the surgical clipping group and endovascular coiling group. There w ere no significant differences in the complete occlusion rate of aneurysms ( 97.5%vs.91.1%;P=0.364) and the good outcome rate (65.0%vs.68.9%; χ2 =0.145, P=0.703) betw een the surgical clipping group and the endovascular coiling group. No patients died in the surgical clipping group and 1 patient died in the endovascular coiling group, and there w as no significant difference ( P=1.000). One patient (2.5%) had cerebral infarction in the surgical clipping group and no patients had cerebral infarction in the endovascular coiling group, and there w as no significant difference ( P=0.471). Conclusions The efficacy and safety of microsurgical clipping are the same as those of endovascular coiling for ruptured intracranial aneurysms.
8.Advances in treatment of retinopathy of prematurity
Yu WANG ; Xiaoguang ZHOU ; Zhijun CHEN
Chinese Journal of Applied Clinical Pediatrics 2017;32(2):146-148
Retinopathy of prematurity (ROP) is a potentially blinding retinal vascular disease that occurs in premature infants and low birth weight infants.Along with the development of perinatal medicine,the incidence of ROP has increased.If infants with ROP could get treatment in time,the disability rate due to ROP would significantly reduce.Now,the present situation and advances in treatment of ROP were reviewed.
9.Advances in immunotherapy of gastric cancer
Yuanhao LV ; Ming JI ; Xiaoguang CHEN
Chinese Journal of Biochemical Pharmaceutics 2016;36(11):197-199
500 thousands people died from gastric cancer in China over 2015,shortage of clinical medicines and therapeutic methods is one of the reasons for the high mortality.Tumor immunotherapy is the hottest area of research over the past decade,whose success in hematological malignancies makes people raised their confidence to “cure” cancer.In recent years,gastric cancer immunotherapy research has made some achievements,while clinical outcomes still need improvement.In this paper, the progress of clinical research of common immunotherapeutic drugs and methods in several fields of gastric cancer research are reviewed to discuss the development prospects of immunotherapy for gastric cancer .
10.Research progress on biological function of PARP3
Liyuan WANG ; Ming JI ; Xiaoguang CHEN
Chinese Journal of Biochemical Pharmaceutics 2016;36(12):15-19
As a member of PARP superfamily, PARP3 shares a high homology with PARP1 and PARP2, which are all DNA-dependent enzymes that are catalytically activated by DNA strand breaks.Compared to PARP1 and PARP2, PARP3 exerted some special properties in tissue expression pattern and biological function.The evidence has shown that PARP3 could be activated by DNA double strand breaks and special DNA single strand breaks and synthesize mono(ADP-ribose) (MAR) covalently attached to target proteins including itself.PARP3 plays an important role in DNA double strand breaks, DNA single strand breaks, activation of PARP1 and development of nervous system.It has been reported that PARP3 is associated with glioma and breast cancers.In this review, PARP3 structure, activation mechanism, biological function and its relationship with diseases will be presented.