Willis covered stent in patients having carotid artery rupture during transnasal endoscopic pituitary tumor resection: an application and follow-up study / 中华神经医学杂志

Objective:To investigate the safety and effectiveness of Willis covered stent in patients having carotid artery rupture during transnasal endoscopic pituitary tumor resection.Methods:A retrospective analysis was performed. Six patients having carotid artery rupture during transnasal endoscopic pituitary tumor resection admitted to the 3 hospitals from May 2016 to December 2019 were chosen; their clinical data were collected. The surgical processes and complications were concluded, and the prognoses were evaluated by modified Rankin scale (mRS).Results:One patient was treated with intraoperative simple tamponade compression for hemostasis, and died for massive intracranial hemorrhage 2 weeks after surgery. Five patients were occluded by Willis covered stents; the occluded success rate was 100% but ophthalmic arteries were blocked in all. During the perioperative period, diabetes insipidus occurred in one patient and incomplete oculomotor paralysis occurred in one patient; 5 patients were followed up for 3-12 months: MRI indicated subtotal resection of tumor in 4 patients and total resection in one patient, no new bleeding or ischemic stroke events occurred in these 5 patients, and the prognosis was good.Conclusion:Willis covered stent is safe and effective in patients having carotid artery rupture during transnasal endoscopic pituitary tumor resection.

Morphological and hemodynamic stress characteristics of infundibular dilatation of the posterior communicating artery / 中华神经医学杂志

Objective:To investigate the morphological and hemodynamic stress characteristics of infundibular dilatation of the posterior communicating artery.Methods:From January 2018 to May 2020, 30 patients with infundibular dilatation of the posterior communicating artery (observation group) found by digital substraction angiography (DSA) for suspecting as having equivocal posterior communicating artery aneurysm in our hospital were selected. The angle between posterior communicating artery and internal carotid artery, and hemodynamics stress parameters at the infundibular dilatation of the posterior communicating artery (total pressure and shear force) were measured by DSA and quantitatively analyzed by computational fluid dynamics methods. Thirty patients without intracranial aneurysm and with normal posterior communicating arteries admitted to our hospital at the same period were used as control group.Results:The mean value of the bending angle between the posterior communicating artery and internal carotid artery in the control group was ([80.1±8.4]°), which was significantly higher than that in the observation group ([73.2±5.8]°, P<0.05). The shear force and total pressure of infundibular dilatation of the posterior communicating artery of the observation group ([8.32±0.70] Pa and [85.61±6.04] Pa), which were significantly higher than those of the control group at the same locations ([3.95±0.28] Pa and [25.72±7.18] Pa, P<0.05). Conclusion:There are significant differences in hemodynamic stress between the normal posterior communicating artery and the infundibular dilatation of the posterior communicating artery, which might play an important role in triggering the formation of aneurysms.

Recanalization for symptomatic chronic internal carotid artery occlusion: a preliminary study / 中华放射学杂志

Objective:To evaluate the value of endovascular recanalization and hybrid recanalization for chronic internal carotid artery occlusion(COICA), and to evaluate its feasibility, safety, success rate, and clinical outcomes.Methods:Totally 35 patients who received endovascular recanalization or hybrid recanalization with symptomatic COICA were enrolled from January 2019 to December 2019 in Department of Cerebrovascular Disease,Zhengzhou University People′s Hospital. The clinical characteristics, treatment strategies, success rate, and major events of the patients were analyzed retrospectively.Results:Thirty of 35 patients were successfully recanalized. Among them, hybrid recanalization was performed in 3 cases, carotid endarterectomy was performed in 1 case, and endovascular recanalization was performed in 26 cases, 5 patients failed because they could not reach the distal true cavity. Among the successful patients, 5 patients had operation-related complications, 3 patients had embolism cerebral infarction, 1 patient had hyperperfusion cerebral hemorrhage, 1 patient still had transient ischemic attack after operation. All patients were followed up clinically, 2 patients had reoccurrence of obstruction, 2 patient had restenosis, the remaining patients had no hemodynamic stenosis or reocclusion.Conclusion:In highly-selected cases, intracavitary recanalization for symptomatic COICA is feasible, relatively safe and effective.

Endovascular recanalization in non-acute symptomatic occlusion of the ophthalmic segment of internal carotid artery / 中华神经医学杂志

Objective To investigate the safety,efficacy and feasibility of endovascular recanalization in non-acute symptomatic occlusion of the ophthalmic segment of internal carotid artery,and analyze the factors affecting its success.Methods Fifty-four patients with non-acute symptomatic occlusion of the ophthalmic segment of internal carotid artery,underwent endovascular recanalization in our hospital from January 2013 to December 2017,were enrolled.Modified Rankin scale (mRS) and National institutes of health stroke scale (NIHSS) scores were compared before and after treatment;the prognosis results were analyzed after 2 years of follow-up.Independent factors influencing the prognoses were identified by Logistic regression analysis.Results Recanalization was achieved in 52 patients and failure was noted in two patients.The mRS scores and NIHSS scores before treatment (2.25±0.13,18.43±1.36) were significantly higher than those after treatment (1.44±0.05,11.81±0.71,P＜0.05).After 2 years of follow-up,good prognosis was noted in 42 patients,poor prognosis in 8 patients,and loss of follow-up in 2 patients.Multivariate Logistic analysis showed that history of hypertension and history of diabetes were independent risk factors for the prognoses of patients with non-acute symptomatic occlusion of the ophthalmic segment of internal carotid artery after endovascular reeanalization (OR=1.429,95CI:1.146-1.783,P=0.005;OR=2.597,95CI:2.364-2.854,P=0.005).Conclusion The curative effect of interventional therapy for non-acute occlusion of symptomatic internal carotid artery is reliable,and histories of hypertension and diabetes can affect the prognoses of patients.

Clinical features,pathology and prognostic factors of young cervical cancer / 中国综合临床

Objective To investigate the clinical features,pathology and prognostic factors of young patients with cervical cancer less than 35 years old.Methods One hundred and twenty cases cervical cancer less than 35 years old were selected as study group,while 120 cases of cervical cancer over 35 years old as control group in the same period.The clinical features and pathology were compared between two groups and risk factors were analyzed.Results The proportion of contact vaginal bleeding,menstrual disorders,mild cervical erosion,HPV infection,and the number of pregnancy preserving ovarian surgery in study group were significantly higher than that in control group(60.8％(73/120)vs.47.5％(57/120),30.0％(36/120)vs.11.7％(14/120),57.5％(69/120)vs.23.3％(28/120),81.7％(98/120)vs.60.0％(72/120),52.5％(63/120)vs.25.8％(31/120)),the differences were statistically significant(x2=4.30,12.23,29.90,13.63,17.91;P＜0.05).The incidence of irregular vaginal bleeding in study group was significantly lower than that in control group(6.7％(8/120)vs.15.8％(19/120)),the differences was statistically significant(x2=5.05,P＜0.05).The main pathological types of two groups were squamous cell carcinoma,non squamous cell carcinoma rate in study group was significantly higher than that in control group(27.5％(33/120)vs.15.0％(18/120)),the differences was statistically significant(x2=5.60,P＜0.05).Pelvic lymph node metastasis rate in study group was 68.3％(82/120),significantly higher than that in control group(55.0％(66/120),x2=4.49,P＜0.05).Multivariate analysis of prognostic factors in young patients with cervical cancer showed that clinical stage,pathological type,depth of cervical invasion and pelvic lymph node metastasis were independent risk factors for the prognosis of young patients with cervical cancer(Wald x2=4.02,6.93,8.92,10.87;OR=3.22,5.57,6.84,5.48;95％CI=1.13-8.62,1.24-11.75,2.82-17.35,1.88-12.35,P＜0.05).Conclusion There are some differences in the clinical features and pathological characteristics of young patients with cervical cancer and middle-aged and elderly patients with cervical cancer.More attention should be paid on the high clinical staging,non squamous cell carcinoma,deep cervical infiltration positive pelvic lymph node metastasis patients,focus on the investigation and prevention,improve the individual treatment and prevention and control system.

Study of molecular mechanism of anti-Parkinson's disease traditional Chinese medicine using model of Caenorhabditis elegans / 中国中药杂志

Parkinson's disease (PD) is a neurodegenerative disorder with a complex, multifactorial aetiology. The brains of patients affected with PD are characterized by a loss of neurons in dopamine neurons in the substantia nigra, decreasing of dopamine secretion, and the deposition of Lewy bodies (LBs) in the cytoplasm of remaining neurons. In China the data show that the incidence of Parkinson's disease increases at least 20 times in recent 20 years, and it makes things worse for the aging society. Developing good anti-PD drugs to improve the patient's quality of life is particularly important. The treatment of PD using traditional Chinese medicine (TCM) has made remarkable effect, while the the molecular mechanisms of it is still not known, while elucidating the molecular mechanism of TCM is the base of better understanding its function. Using genetically modified PD model of Caenorhabditis elegans, which is suitable for molecular mechanism study, to explore the interference mechanism of TCM to PD might be an effective way. This review briefly introduces the research progress on molecular mechanism of PD, and then discusses the idea of using C. elegans to study molecular mechanism of TCM intervention to PD.

Research progress on mechanism of delaying senility of Chinese materia medica in recent years / 中国中药杂志

Recently investigating mechanisms on delaying aging of traditional Chinese medicine (TCM) and discovering high effective related medicines have been become hot spot and have achieved some progress. This review comprehensively analyzed the mechanism of TCM on delaying senility in recent years. The modern researches have demonstrated that Chinese materia medica and compound formulas can retard aging process by anti-oxidant activity of free radical, modulating metabolism of neuroendocrine, balancing immunological function, prolonging telomere length and promoting telomerase activity in cells, anti-DNA damage of cells, and controlling expression of gene and protein involved in cell proliferation.

Effects of MPD on Heart Hemodynamics in Normal Anesthetic Dogs / 中药新药与临床药理

Objective To investigate the pharmacological effects of MPD on heart hemodynamics and myocardial oxygen consumption in dogs, and to study its mechanism. Methods The changes of parameters such as blood pressure (BP), coronary blood flow, myocardial oxygen consumption and heart rates were observed in normal anesthetic dogs. Results Compared to those in the normal group, MPD can obviously lower the BP and peripheral vascular resistance, dilate the coronary and peripheral artery, increase the coronary blood flow and improve the left ventricle function and myocardium oxygen consumption rate. Conclusion MPD can improve the heart hemodynamics and regulate myocardium oxygen consumption.

Effect of MPD on Acute Myocardial Ischemia in Dogs / 中药新药与临床药理

Objective To study the protecitve effect of methy Protodioscin(MPD)on myocardial infarction in dogs. Methods Dog models of myocardial infarction were induced by ligation of coronary artery. The degree of myocardial ischemia was calculated by measuring the epicardial electrogram, and the myocardial infarction area was detected with N-BT histochemistry staining method. The changes of ET, 6-Keto-PGF1a, TXB2 in blood plasma were observed with radioimmunoassay. Meanwhile, the coronary blood flow was measured. Results MPD can obviously relieve the pathological changes of the acute myocardial infarction, decrease the infarction size, reduce the myocardium ischemic degree, dilate the coronary artery , and increase the myocardial blood supply. Meanwhile, MPD can improve the vascular endothelial cell function. Conclusion MPD had obvious effect for relieving acute myocardial infarction in dogs.

Effects of Methyl Protodioscin on In-Vivo and In-Vitro Thrombosis and Blood Viscosity in Rats / 中药新药与临床药理

Objective To investigate the effects of methyl protodioscin (MPD ) on in-vitro and in-vivo thrombosis and blood viscosity in rats. Methods The vitro thrombus was induced by Chandler method,and the length,wet and dry weight of the thrombus were measured. Thrombosis instrument was to observe the in-vivo occlusion time (OT). At the same time,determined the high-,middle-,low-shear blood viscosity as well as the plasma viscosity in rats was determined .Results Compared to normal group,middle-dose MPD group can delay the OT,and the high-dose group can decrease the length,wet and dry weight of in-vitro thrombus. The blood viscosity is reduced in all groups. Conclusion MPD can inhibit the in-vitro thrombosis,decrease the dry and wet weight of thrombus and delay the OT. Moreover,MPD has the effects of lowering the whole blood viscosity and plasma viscosity.

Therapeutic Effects of Methyl Protodioscin for Myocardial Infarction in Rats / 中药新药与临床药理

Objective To study the therapeutic effects of methyl protodioscin (MPD ) on myocardial infarction in rats. Methods Rat models of myocardial infarction were induced by ligation of coranary artery. Then myocardium infarction area and the vasoactive substance were measured to evaluate the therapeutic effect of MPD on acute myocardial infarction in rats. Results Compared with the control group,MPD lessened the myocardial infarction size dramatically,inhibited the increase of CK and LDH ,lowered the increased MDA content level and improved the activity of SOD and NO. Conclusion MPD reduces the level of myocardium enzyme and the myocardial infarction size,and increases the capability of clearing oxygen free radical and function of the vascular endothelial cell. MPD by intravenous injection has a better effect than that by oral use.

Effects of Sanbaoxin on Formation of Thrombosis In Vivo and In Vitro in Rats / 中医杂志

Objective:To observe effects of Sanbaoxin on formation of thrombosis in vivo and in vitro in rats.Methods:After the rats were administrated by high,mid and low doses,i,e,10g crude drug/kg,5g/kg and 1g/kg,respectively,Chandler method was used to form in vitro thrombosis and electrical stimulation of common carotid artery was used to form in vivo thrombosis,and then effects of Sanbaoxin on formation of thrombosis were observed.Results:The high dosage of Sanbaoxin could significantly prolongate the period of in vivo thrombosis(P