RESUMO
The study objective was to investigate the relations between serum endothelin-1 and in-stent restenosis in vertebral artery stenting. Sixty-eight patients undergoing re-examination of vertebral artery stenting in the Department of Cerebrovascular Disease, Hangzhou Third People's Hospital, between April 2019 and October 2022, were invited to participate. According to the presence of vertebral artery stenting, patients were divided into the restenosis (n = 19) or non-restenosis (n = 49) groups. General clinical data and endothelin-1 levels were compared between the groups. Logistic regression analysis was used to explore the relations between endothelin-1 level and risk for in-stent restenosis. Receiver operating characteristic curves were drawn to test the diagnostic value of serum endothelin-1 level for in-stent restenosis. Compared with the non-restenosis group, restenosis group levels of low-density lipoprotein, triglycerides, and endothelin-1 were significantly higher (p < 0.05) Multivariate logistic regression analysis showed that endothelin-1, stent length, and low-density lipoprotein were independently associated with in-stent restenosis (odds ratio = 1.502, 95% confidence interval: 0.042 ~ 0.212, p = 0.000; odds ratio = 1.899, 95% confidence interval: 1.116 ~ 2.237, p = 0.000; odds ratio = 1.899, 95% confidence interval: 1.228 ~ 3.337, p = 0.001, respectively). Area under the curve for serum endothelin-1 in the diagnosis of vertebral artery in-stent restenosis was 0.938. The best diagnostic cut-off value was 11.94 ng/L. Sensitivity was 89.5%. Specificity was 85.7%. These cumulative data indicate that endothelin-1 level is independently associated with in-stent restenosis.
Assuntos
Endotelina-1 , Stents , Artéria Vertebral , Humanos , Endotelina-1/sangue , Masculino , Feminino , Stents/efeitos adversos , Pessoa de Meia-Idade , Idoso , Artéria Vertebral/diagnóstico por imagem , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/cirurgiaRESUMO
BACKGROUND AND PURPOSE: Cardiac biomarkers may help identify stroke mechanisms and may aid in improving stroke prevention strategies. There is limited data on the association between these biomarkers and acute ischemic stroke (AIS) caused by large vessel occlusion (LVO). We hypothesized that cardiac biomarkers (cardiac troponin and left atrial diameter [LAD]) would be associated with the presence of LVO. METHODS: Data were abstracted from a single center prospective AIS database over 18 months and included all patients with AIS with CT angiography of the head and neck. The presence of LVO was defined as proximal LVO of the internal carotid artery terminus, middle cerebral artery (M1 or proximal M2), or basilar artery. Univariate analyses and predefined multivariable models were performed to determine the association between cardiac biomarkers (positive troponin [troponin ≥0.1 ng/mL] and LAD on transthoracic echocardiogram) and LVO adjusting for demographic factors (age and sex), risk factors (hypertension, diabetes, hyperlipidemia, history of stroke, congestive heart failure, coronary heart disease, and smoking), and atrial fibrillation (AF). RESULTS: We identified 1234 patients admitted with AIS; 886 patients (71.8%) had vascular imaging to detect LVO. Of those with imaging available, 374 patients (42.2%) had LVO and 207 patients (23.4%) underwent thrombectomy. There was an association between positive troponin and LVO after adjusting for age, sex and other risk factors (adjusted OR 1.69 [1.08-2.63], Pâ¯=â¯.022) and this association persisted after including AF in the model (adjusted OR 1.60 [1.02-2.53], Pâ¯=â¯0.043). There was an association between LAD and LVO after adjusting for age, sex, and risk factors (adjusted OR per mm 1.03 [1.01-1.05], Pâ¯=â¯0.013) but this association was not present when AF was added to the model (adjusted OR 1.01 [0.99-1.04], Pâ¯=â¯.346). Sensitivity analyses using thrombectomy as an outcome yielded similar findings. CONCLUSIONS: Cardiac biomarkers, particularly serum troponin levels, are associated with acute LVO in patients with ischemic stroke. Prospective studies are ongoing to confirm this association and to test whether anticoagulation reduces the risk of recurrent embolism in this patient population.
Assuntos
Isquemia Encefálica/etiologia , Estenose das Carótidas/etiologia , Ecocardiografia , Átrios do Coração/diagnóstico por imagem , Cardiopatias/complicações , Acidente Vascular Cerebral/etiologia , Troponina/sangue , Insuficiência Vertebrobasilar/etiologia , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Isquemia Encefálica/sangue , Isquemia Encefálica/diagnóstico por imagem , Isquemia Encefálica/terapia , Estenose das Carótidas/sangue , Estenose das Carótidas/diagnóstico por imagem , Estenose das Carótidas/terapia , Angiografia Cerebral/métodos , Angiografia por Tomografia Computadorizada , Bases de Dados Factuais , Feminino , Cardiopatias/sangue , Cardiopatias/diagnóstico por imagem , Cardiopatias/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Acidente Vascular Cerebral/sangue , Acidente Vascular Cerebral/diagnóstico por imagem , Acidente Vascular Cerebral/terapia , Trombectomia , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/diagnóstico por imagem , Insuficiência Vertebrobasilar/terapiaRESUMO
The recurrent bronchitis (RB) course is caused by the bronchi secretory-evacuation mechanisms state, which provide clearance from pathogens. This mechanism can be disrupted by vegetative reflexes and neuropeptides imbalance that develops in children with the syndrome of the vertebrobasilar arterial system (SVBAS). The objective: study of the neurogenic maintenance of the RB pathogenesis in children with SVBAS by studying the serum content of substances affecting of the bronchial mucosa secretory-evacuation function and inflammatory activity (substance P, vasoactive intestinal peptide - VIP and endothelin-1 - ET-1). 90 children aged 7 to 11 years were examined, 3 observation groups were formed: Group 1 - children with RB and SVBAS (n=30); Group 2 - children with SVBAS without RB (n=30); Group 3 - children with RB without SVBAS (n=30). In the Group 1, compared with the 2nd and 3rd, there was an increase in the children number with high serum content of substance P (by 66.7% and 50.0%, respectively, p<0.05) and ET -1 (by 23.3% and 40.0%, respectively, p<0.05), low content of VIP (by 46.7% and 23.4%, respectively, p<0.05). Children with RB and SVBAS have serum level imbalance of the pro-inflammatory substance P, ET-1 and anti-inflammatory VIP as the bronchitis severe course basis.
Assuntos
Bronquite/diagnóstico , Endotelina-1/sangue , Substância P/sangue , Peptídeo Intestinal Vasoativo/sangue , Insuficiência Vertebrobasilar/diagnóstico , Bronquite/sangue , Criança , Humanos , Insuficiência Vertebrobasilar/sangueRESUMO
This paper aims to compare the curative effects of persimmon leaf extract and ginkgo biloba extract in the treatment of headache and dizziness caused by vertebrobasilar insufficiency. Sixty patients were observed, who underwent therapy with persimmon leaf extract and ginkgo biloba extract based on the treatment of nimodipine and aspirin. After 30 days, 30 patients treated with persimmon leaf extract and 30 patients with ginkgo biloba extract were examined for changes in hemodynamic indexes and symptoms, such as headache and dizziness. The results showed statistically significant differences of 88.3% for the persimmon leaf extract and 73.1% for the ginkgo biloba extract, P < 0.05. Compared to the group of ginkgo biloba extract, the group of persimmon leaf extract had more apparent improvement in the whole blood viscosity, plasma viscosity, fibrinogen, hematokrit, and platelet adhesion rate, and the difference was statistically significant (P < 0.05 or P < 0.01). Based on these analyses, it can be concluded that persimmon leaf extract is better than ginkgo biloba extract in many aspects, such as cerebral circulation improvement, cerebral vascular expansion, hypercoagulable state lowering and vertebrobasilar insufficiency-induced headache and dizziness relief.
Assuntos
Diospyros/química , Ginkgo biloba/química , Extratos Vegetais/farmacologia , Insuficiência Vertebrobasilar/tratamento farmacológico , Adulto , Idoso , Velocidade do Fluxo Sanguíneo/efeitos dos fármacos , Tontura/tratamento farmacológico , Feminino , Cefaleia/tratamento farmacológico , Humanos , Masculino , Pessoa de Meia-Idade , Extratos Vegetais/uso terapêutico , Folhas de Planta/química , Resultado do Tratamento , Insuficiência Vertebrobasilar/sangueRESUMO
OBJECTIVES: This study aimed to explore the correlation between Fibroblast Growth Factor-23 (FGF23) levels and Cerebral Infarction (CI), and to determine whether there is a significant relationship between FGF23 and the occurrence and severity of CI. METHODS: The study categorized Cerebral Infarction (CI) patients into severe and mild stenosis groups based on vertebrobasilar artery stenosis, using Digital Subtraction Angiography (DSA) and Magnetic Resonance Imaging (MRI). The study compared the levels of Fibroblast Growth Factor-23 (FGF23) in the serum of CI patients and healthy controls using a t-test and evaluated the diagnostic effectiveness of serum FGF23 using a Receiver Operating Characteristic (ROC) curve. Additionally, the study analyzed the correlation between FGF23 levels and CI severity after treatment using the National Institute of Health Stroke Scale score. RESULTS: The study found a significant increase in serum Fibroblast Growth Factor-23 (FGF23) levels in patients with Cerebral Infarction (CI) compared to healthy volunteers, (p < 0.001). A higher serum FGF23 level was observed in the severe stenosis group than in the mild stenosis group (p < 0.001). Furthermore, the study showed that a high FGF23 level at admission was significantly related to more severe symptoms of CI as indicated by the National Institute of Health Stroke Scale (NIHSS) score on the 7th day after treatment (p < 0.001). CONCLUSIONS: This study discovered a correlation between Fibroblast Growth Factor-23 (FGF23) levels, vertebrobasilar artery stenosis, and short-term prognosis in patients who had recently experienced acute Cerebral Infarction (CI).
Assuntos
Infarto Cerebral , Fator de Crescimento de Fibroblastos 23 , Fatores de Crescimento de Fibroblastos , Índice de Gravidade de Doença , Insuficiência Vertebrobasilar , Humanos , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/diagnóstico por imagem , Infarto Cerebral/sangue , Infarto Cerebral/diagnóstico por imagem , Feminino , Masculino , Fatores de Crescimento de Fibroblastos/sangue , Pessoa de Meia-Idade , Idoso , Estudos de Casos e Controles , Imageamento por Ressonância Magnética , Angiografia Digital , Biomarcadores/sangue , Curva ROC , Adulto , Valores de ReferênciaRESUMO
Deep white matter hyperintensities (DWMHs) seen on magnetic resonance imaging (MRI) are thought to reflect small-vessel diseases (SVDs) and may have a background that differs from that of stenotic large-vessel diseases. We assessed risk factors for DWMHs and investigated the association between DWMHs and dilative changes in the basilar artery (BA) on MRI in nonstroke patients. We reviewed clinical information and MRI findings for 149 outpatients aged 46-90 years, excluding those with a previous symptomatic cerebrovascular event. DWMHs were graded 0-3, and the maximal BA diameter and area were measured from the flow void on axial T2-weighted MRI to assess dilatation. We divided the patients into groups with and without DWMH grade 2 or 3, and compared clinical information and BA parameters in these groups. The two groups demonstrated significant differences in age, serum low-density lipoprotein (LDL) level, estimated glomerular filtration rate (eGFR), and BA parameters. An adjusted logistic regression analysis including BA diameter found that age (odds ratio [OR], 1.974 per 10 years; 95% confidence interval [CI], 1.030-1.112; P = .0006), LDL (OR, 0.811 per 10 mg/dL; 95% CI, 0.964-0.965; P = .0085), eGFR (OR, 0.835 per 10 mL/min/1.73 m(2); 95% CI, 0.967-0.998; P = .0229), and BA diameter (OR, 2.515 per 1 mm; 95% CI, 1.191-4.098; P = .0119) were independently associated with the presence of DWMHs. An analysis including the BA area yielded similar results. DWMHs are manifestations of SVDs and show a strong association with lower serum LDL level, lower eGFR, and BA dilatation.
Assuntos
Artéria Basilar/patologia , Leucoencefalopatias/sangue , Leucoencefalopatias/patologia , Lipoproteínas LDL/sangue , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/patologia , Idoso , Idoso de 80 Anos ou mais , Artéria Basilar/fisiopatologia , Feminino , Humanos , Leucoencefalopatias/fisiopatologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Insuficiência Vertebrobasilar/fisiopatologiaRESUMO
The extent of carotid artery atherosclerosis correlates with increased plasma concentrations of total cholesterol (TC) and low-density lipoprotein-cholesterol (LDL-C) and with a decreased plasma concentration of high-density lipoprotein-cholesterol (HDL-C). However, emerging data suggest that a triglyceride (TG):HDL-C ratio may be a better predictor of vascular risk than the traditional lipid measures such as TC and LDL-C. The purpose of this study was to evaluate the association between TC, LDL-C, TG, HDL-C, and the TG:HDL-C ratio with steno-occlusive disease in the intracranial cerebral arteries. We analyzed the records of 361 stroke-free subjects who underwent brain magnetic resonance angiography as part of their voluntary health checks. The presence of a steno-occlusive lesion in the basilar artery (BA) and in the horizontal portion of the middle cerebral artery (MCA) was assessed using brain 3D time of flight magnetic resonance angiography. All patients had fasting lipid panels drawn. We categorized serum lipid indices into quartiles and logistic regression analyses were performed. No serum lipid index was associated with the prevalence of MCA disease; TC, LDL-C, and HDL-C concentrations were not correlated with the prevalence of BA disease. A TG concentration in the third quartile compared with the lowest quartile was associated with increased prevalence of BA disease. The TG:HDL-C ratios in the upper three quartiles compared with the lowest quartile were associated with increased prevalence of BA disease. In conclusion, the TG:HDL-C ratio is more highly associated with the intracranial steno-occlusive disease than any standard lipid measure.
Assuntos
HDL-Colesterol/sangue , Jejum/sangue , Infarto da Artéria Cerebral Média/sangue , Triglicerídeos/sangue , Insuficiência Vertebrobasilar/sangue , Adulto , Feminino , Humanos , Infarto da Artéria Cerebral Média/diagnóstico por imagem , Angiografia por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Radiografia , Estudos Retrospectivos , Insuficiência Vertebrobasilar/diagnóstico por imagemRESUMO
BACKGROUND: Few studies have investigated the association between plasma Homocysteine (Hcy) levels in patients with recanalization after acute Basilar Artery Occlusion (BAO). OBJECTIVE: This study investigated the predictive value of Hcy on the clinical prognosis of patients with recanalization after acute BAO. METHODS: Altogether, 829 participants were recruited from the standard medical treatment plus endovascular treatment group of the Acute Basilar Artery Occlusion Study (BASILAR). Hcy levels were measured the morning after admission. The primary outcome was a combination of death and major disability (modified Rankin Scale score 4-6) at 90 days, and the secondary outcome was the mortality of patients with recanalization after acute BAO within 90 days. We used multivariable logistic regression modeling to estimate the association between Hcy and prognosis in our participants at 90 days. RESULTS: Altogether, 647 patients were assessed, and 302 patients were included in this study. The median was 12.88 µmol/L, and the mean Hcy concentration was 15.49 µmol/L. Elevated plasma Hcy levels (Hcy >12.88 µmol/L) were associated with poor functional outcomes (adjusted odds ratio 1.922, 95% confidence interval (CI) 1.048-3.528, P=0.035), but not with mortality (adjusted odds ratio 1.605, 95% CI 0.986-2.489, P=0.058). In further subgroup analysis, the conclusion was consistent in all predefined subgroups. CONCLUSION: Our analysis suggests that elevated plasma Hcy levels have a predictive value for functional outcomes in patients with recanalization after acute BAO during the 90-day follow-up period, but not for mortality.
Assuntos
Artéria Basilar/cirurgia , Homocisteína/sangue , Insuficiência Vertebrobasilar/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Procedimentos Endovasculares , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Sistema de Registros , Resultado do Tratamento , Insuficiência Vertebrobasilar/sangue , Adulto JovemRESUMO
INTRODUCTION: Vertebrobasilar artery dissection(VBD) is a common etiology of posterior circulation stroke(PCS). However, the etiology of VBD itself remains unclear. The present study aimed to test whether inflammation is involved in the mechanism of VBD by evaluating its relationship with total and differential leukocyte counts. METHODS: Patients with PCS caused by VBD or by large artery atherosclerosis(LAA) were recruited between January 1, 2012 and December 31, 2014 from the Taipei Veterans General Hospital. Age- and sex-matched non-stroke(NS) volunteers were also included. Univariate and multivariate analyses were performed to compare total/differential leukocyte counts among VBD, LAA, and NS groups. RESULTS: One-hundred-one patients with VBD [average age: 64.8(15.1) years; 77(76.2%) males], 70 with LAA [average age: 73.9(10.6) years; 44(62.9%) males], and 202 NS [average age: 64.8(15.1) years; 77(76.2%) males] patients were included in the present study. Compared with the NS and LAA groups, respectively, the VBD group had significantly higher total leukocyte and neutrophil counts and frequency of high leukocyte (>10,000â¯×â¯106/L) and high neutrophil (>8000â¯×â¯106/L) counts. Multivariate analyses, adjusted for age, sex, and vascular risk factors, showed that the VBD group, compared with the other groups, had an odds-ratio of 5.04 (95% confidence interval:2.43-10.43) and 5.90 (2.70-12.92) with respect to the prevalence of high leukocyte and high neutrophil counts. CONCLUSION: VBD was associated with high leukocyte and neutrophil counts. Our results support that inflammation and neutrophil-related pathophysiology might be involved in the mechanism of VBD; however, the causal relationship would need further investigations.
Assuntos
Dissecção Aórtica/sangue , Isquemia Encefálica/sangue , Acidente Vascular Cerebral/sangue , Insuficiência Vertebrobasilar/sangue , Idoso , Dissecção Aórtica/complicações , Isquemia Encefálica/etiologia , Feminino , Humanos , Contagem de Leucócitos , Masculino , Pessoa de Meia-Idade , Neutrófilos , Acidente Vascular Cerebral/etiologia , Insuficiência Vertebrobasilar/complicaçõesRESUMO
OBJECTIVES: We investigated arterial blood gas abnormalities in patients presenting with dizziness. PATIENTS AND METHODS: The study included 58 patients (39 females, 19 males; mean age 46 years; range 22 to 74 years) who presented during attacks of dizziness. The duration of vertigo complaints ranged from one day to 30 years. Arterial gas measurements were performed at presentation and one month after treatment. The patients were examined in five groups according to the diagnoses: Meniere's disease (n=14), benign paroxysmal positional vertigo (n=13), vertebrobasilar insufficiency (n=12), vestibular neuritis (n=4), and craniocervical myofascial syndromes (n=15). RESULTS: At presentation, pH was low (acidosis) in two patients (3.5%), and high (alkalosis) in 15 patients (25.9%). After treatment, all abnormal pH values returned to normal. Twenty-four patients had high or low HCO3- values. High HCO3- values persisted in three patients together with dizziness. Patients with vestibular neuritis had significantly higher PO2 values compared to those with craniocervical myofascial syndrome and vertebrobasilar insufficiency (p<0.05). However, one month after treatment, there were no significant differences between five groups with respect to PO2 levels (p>0.05). Consecutive blood gas measurements did not differ significantly within each diagnosis group (p>0.05). CONCLUSION: Our results suggest that arterial blood gas abnormalities may be related to vertigo attacks.
Assuntos
Acidose/diagnóstico , Alcalose/diagnóstico , Tontura/etiologia , Acidose/sangue , Acidose/complicações , Adulto , Idoso , Alcalose/sangue , Alcalose/complicações , Gasometria , Tontura/epidemiologia , Neuralgia Facial/sangue , Neuralgia Facial/complicações , Neuralgia Facial/diagnóstico , Feminino , Humanos , Concentração de Íons de Hidrogênio , Masculino , Doença de Meniere/sangue , Doença de Meniere/complicações , Doença de Meniere/diagnóstico , Pessoa de Meia-Idade , Turquia/epidemiologia , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/complicações , Insuficiência Vertebrobasilar/diagnóstico , Vertigem/sangue , Vertigem/complicações , Vertigem/diagnóstico , Neuronite Vestibular/sangue , Neuronite Vestibular/complicações , Neuronite Vestibular/diagnósticoRESUMO
Recent studies suggest that high plasma levels of tissue-type plasminogen activator (tPA) and its inhibitor (plasminogen activator inhibitor-1, PAI-1) are markers of an increased risk of atherothrombotic ischemic events such as stroke and myocardial infarction. In this prospective study, we measured tPA antigen, PAI-1 antigen and activity, as well as tPA/PAI-1 complex in patients with acute stroke. Stroke subtypes were classified according to the TOAST criteria. From 132 consecutively screened patients, 89 (100%) were enrolled in this study, including 42 patients (47%) with large artery atherosclerosis (LAA), 32 (36%) with small vessel occlusion (SVO), and 15 (17%) with cardioembolism (CE). Nineteen age-matched neurologic patients without manifestations of cerebrovascular disease served as control subjects (CS). Patients with acute stroke had significantly higher plasma levels of tPA antigen (p < 0.001), PAI-1 antigen (p < 0.05) and PAI activity (p < 0.05) than patients in the control group. t-PA antigen, PAI activity and tPA/PAI-1 complex levels were similar regardless of stroke etiology. Only PAI-1 antigen was lower in patients with cardioembolic stroke than in stroke patients with LAA (p < 0.05). Plasma tPA antigen, PAI-1 antigen, and PAI activity are significantly increased in patients with acute ischemic stroke. Except for PAI-1 antigen, this increase appears not to be related to the underlying stroke etiology.
Assuntos
Isquemia Encefálica/sangue , Infarto da Artéria Cerebral Anterior/sangue , Infarto da Artéria Cerebral Anterior/etiologia , Inibidor 1 de Ativador de Plasminogênio/sangue , Ativador de Plasminogênio Tecidual/sangue , Doença Aguda , Fatores Etários , Idoso , Anticoagulantes/administração & dosagem , Arteriosclerose/sangue , Isquemia Encefálica/complicações , Isquemia Encefálica/tratamento farmacológico , Artéria Carótida Interna , Feminino , Humanos , Infarto da Artéria Cerebral Média/sangue , Infarto da Artéria Cerebral Média/etiologia , Embolia Intracraniana/sangue , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/complicaçõesRESUMO
Clinical hemorheological and brain stem auditory evoked potential (BAEP) investigations were performed in patients with ischaemic brain stem stroke. Lesions were verified by MRI. 55 healthy persons with negative rheological and BAEP findings were used as controls (group A/1). 33 stroke patients with negative rheological parameters (group A/2) and 34 patients with hyperviscosity (group A/3) were also enrolled. In group A/3 bilateral pathological BAEP patterns were found, that could be explained by microcirculatory disturbances. 36 persons with verified blood hyperviscosity, but without neurological signs were also examined (group A/4). In this group, as in group A/3, either total lack of any waveforms, or a bilateral prolongation of wave III was observed. In 31 cases of group A/4, control BAEP was performed after effective haemodilution therapy, and 6-12 months later (group B/1). Here, normalization of rheological profile had a temporary beneficial effect on BAEP in 14 of 18 cases with former wave III prolongation, but had no effect on BAEP patterns in 13 cases, where lack of waves had been verified by the first investigation. These data suggest that hyperviscosity can result in subclinical pathological symmetric BAEP patterns, both in ischaemic stroke patients and in hyperviscosity patients without neurological symptoms.
Assuntos
Viscosidade Sanguínea , Tronco Encefálico/irrigação sanguínea , Infarto Cerebral/sangue , Potenciais Evocados Auditivos do Tronco Encefálico , Adulto , Tronco Encefálico/fisiopatologia , Infarto Cerebral/complicações , Diabetes Mellitus/sangue , Seguimentos , Hemodiluição , Humanos , Hipertensão/sangue , Hipertensão/complicações , Masculino , Pessoa de Meia-Idade , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/complicaçõesRESUMO
A case of brain stem injury of vascular and traumatic origin, complicated with metabolic disturbances and with finally achieved cure is described.
Assuntos
Tronco Encefálico/irrigação sanguínea , Hiperglicemia/etiologia , Artéria Vertebral/lesões , Insuficiência Vertebrobasilar/etiologia , Adulto , Humanos , Masculino , Insuficiência Vertebrobasilar/sangueRESUMO
A study of 132 patients, aged 15 to 40 years, with bilateral scalenus syndrome, accompanied by vertebrobasilar insufficiency, is reported. The diagnostic value was assessed on the basis of 164 angiograms and 408 blood rheologic parameters. Selective arteriography, conducted simultaneously with the compression test and endovascular pressure gradient measurement, yields the most exhaustive and reliable data on the topical cause of the circulatory disturbance within the subclavian artery and its branches. The scalenus syndrome is an important etiologic factor of vertebrobasilar insufficiency. Intermittent flow through the vertebral artery results from ostium compression, spasm or increased flow in one of the vertebral arteries that may be due to an abnormal flexure, local pressure rise or high arcuation of the subclavian arterial segments I and II. Regional disorders of blood rheologic properties are also in evidence. Surgical treatment produces stable good results.
Assuntos
Viscosidade Sanguínea , Síndrome do Desfiladeiro Torácico/complicações , Insuficiência Vertebrobasilar/diagnóstico por imagem , Adolescente , Adulto , Angiografia , Feminino , Humanos , Masculino , Artéria Subclávia/diagnóstico por imagem , Artéria Vertebral/diagnóstico por imagem , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/etiologiaRESUMO
To remove painful attacks in patients with the vertebral artery syndrome, use was made of xidiphon. The two methods of its administration were developed: application and electrophoretic. 27 patients in the stage of the disease exacerbation were examined and then treated. Vertebrobasilar vessels were examined over time by REG. A study was made of the content of macroelements and trace elements in the area of the impaired vessel, of the status of the bulbar conjunctival vessels using a "ShchL-2" lamp, and of the changes in the psychovolitional sphere and lipid peroxidation. A positive analgesic effect was attained in 25 patients, making it possible to eliminate or diminish to a considerable measure the doses of analgesics.
Assuntos
Quelantes/uso terapêutico , Difosfonatos/uso terapêutico , Insuficiência Vertebrobasilar/tratamento farmacológico , Doença Aguda , Quelantes/administração & dosagem , Túnica Conjuntiva/irrigação sanguínea , Túnica Conjuntiva/efeitos dos fármacos , Difosfonatos/administração & dosagem , Avaliação de Medicamentos , Ácido Etidrônico , Humanos , Iontoforese/métodos , Microcirculação/efeitos dos fármacos , Agregação Plaquetária/efeitos dos fármacos , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/fisiopatologiaRESUMO
By means of complex investigations we studied the influence of certain brain structures' ischemia caused by disorders of the blood flow through the extracranial arteries on the arterial pressure. We established close correlative dependence between degree of brachycephalic arteries occlusion, contents of biologically active agents in the blood outflowing from the brain (angiotonin-2, vasopressin, prostanoids, catecholamines) and value of systemic arterial pressure. We worked out diagnostic criteria of arterial hypertension cerebroischemic using angio- and dopplerography. We have also substantiated the principles of therapy including inhibitors of angiotonin-converting enzyme and selective blockaders of calcium canals.
Assuntos
Isquemia Encefálica/etiologia , Hipertensão/etiologia , Adulto , Animais , Isquemia Encefálica/sangue , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/tratamento farmacológico , Artéria Carótida Interna/diagnóstico por imagem , Estenose das Carótidas/sangue , Estenose das Carótidas/complicações , Estenose das Carótidas/diagnóstico , Estenose das Carótidas/tratamento farmacológico , Cães , Ecoencefalografia/instrumentação , Ecoencefalografia/métodos , Humanos , Hipertensão/sangue , Hipertensão/diagnóstico , Hipertensão/tratamento farmacológico , Pessoa de Meia-Idade , Artéria Vertebral/diagnóstico por imagem , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/complicações , Insuficiência Vertebrobasilar/diagnóstico , Insuficiência Vertebrobasilar/tratamento farmacológicoRESUMO
OBJECTIVES: The purpose of this study is to validate the efficacy of intensive statin therapy for patients with atherosclerotic intracranial arterial stenosis (AICAS). METHODS: In this study, we performed a single-center, randomized, single-blind, parallel-group clinical trial. A total of 120 Chinese patients with AICAS were enrolled and randomly divided into three groups [low-dose atorvastatin therapy (LAT, 10mg/day), standard-dose atorvastatin therapy (SAT, 20mg/day), and intensive-dose atorvastatin therapy (IAT, 40mg/day) groups] in a 1:1:1 ratio. Evaluation variables, including changes in serum lipid profiles, degree of stenosis, and perfusion-related parameters derived from computed tomography perfusion (CTP) imaging from baseline to weeks 26 and 52, as well as the occurrence of cerebrovascular events during the study period, were used to compare the benefits of these three statin therapies. RESULTS: After 52 weeks of treatment, improvement of serum lipid profiles, degree of stenosis, and perfusion-related parameters were all significantly better in the IAT group. In addition, the cumulative probability of cerebrovascular events at 52 weeks was significantly lower in the IAT group than in the LAT group, although there was no statistical difference between the IAT group and the SAT group. The proportion of patients experiencing any adverse event was similar among the three treatment groups. Adverse events caused by IAT were generally mild; no serious adverse events occurred throughout the entire period of study. CONCLUSION: In conclusion, long-term use of IAT appears to be a safe and effective treatment at least for Chinese patients with AICAS.
Assuntos
Constrição Patológica/tratamento farmacológico , Ácidos Heptanoicos/farmacologia , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacologia , Arteriosclerose Intracraniana/tratamento farmacológico , Ataque Isquêmico Transitório/tratamento farmacológico , Pirróis/farmacologia , Acidente Vascular Cerebral/tratamento farmacológico , Idoso , Atorvastatina , China , Protocolos Clínicos , Constrição Patológica/sangue , Constrição Patológica/patologia , Feminino , Seguimentos , Ácidos Heptanoicos/administração & dosagem , Ácidos Heptanoicos/efeitos adversos , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Arteriosclerose Intracraniana/sangue , Arteriosclerose Intracraniana/patologia , Ataque Isquêmico Transitório/sangue , Ataque Isquêmico Transitório/patologia , Masculino , Pessoa de Meia-Idade , Artéria Cerebral Média/patologia , Pirróis/administração & dosagem , Pirróis/efeitos adversos , Método Simples-Cego , Acidente Vascular Cerebral/sangue , Acidente Vascular Cerebral/patologia , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/tratamento farmacológico , Insuficiência Vertebrobasilar/patologiaRESUMO
Posterior ischaemic stroke is relatively uncommon, and its occurrence should alert clinicians to possible uncommon underlying disease. We report a patient with occipital brain infarction. The combination of age, gender, general malaise and elevated erythrocyte sedimentation rate led to the clinical suspicion of giant cell arteritis. Vertebral artery vasculitis was confirmed by 18-FD G positron emission tomography, combined with CT angiography, and immediate immunosuppressive therapy was started. Symptoms of stroke should, in a particular clinical context, raise suspicion of giant cell arteritis.
Assuntos
Infarto Encefálico/diagnóstico , Arterite de Células Gigantes/diagnóstico , Insuficiência Vertebrobasilar/diagnóstico , Idoso , Angiografia , Sedimentação Sanguínea , Infarto Encefálico/sangue , Infarto Encefálico/diagnóstico por imagem , Diagnóstico Diferencial , Feminino , Arterite de Células Gigantes/sangue , Arterite de Células Gigantes/diagnóstico por imagem , Humanos , Tomografia por Emissão de Pósitrons/métodos , Insuficiência Vertebrobasilar/sangue , Insuficiência Vertebrobasilar/diagnóstico por imagemRESUMO
OBJECTIVE: We sought to assess the associations of testosterones and sex hormone-binding globulin (SHBG) with metabolic syndrome and insulin resistance in men. RESEARCH DESIGN AND METHODS: We defined metabolic syndrome according to the National Cholesterol Education Program Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults. Among men aged >or=20 years who participated in the Third National Health and Nutrition Examination Survey (n = 1,226), the Cox proportional hazards model was used to estimate the prevalence ratio and 95% CI of metabolic syndrome according to circulating concentrations of testosterones and SHBG. RESULTS: After adjustment for age, race/ethnicity, smoking status, alcohol intake, physical activity level, LDL cholesterol, C-reactive protein, and insulin resistance, men in the first quartile (lowest) (prevalence ratio 2.16 [95% CI 1.53-3.06]) and second quartile of total testosterone (2.51 [1.86-3.37]) were more likely to have metabolic syndrome than men in the fourth quartile (highest, referent group) (P < 0.001 for linear trend). Similarly, men in the first quartile of SHBG (2.17 [1.32-3.56]) were more likely to have metabolic syndrome than men in the fourth quartile (P = 0.02 for linear trend). No significant associations of calculated free testosterone (P = 0.31 for linear trend) and bioavailable testosterone (P = 0.11 for linear trend) with metabolic syndrome were detected after adjustment for all possible confounders. CONCLUSIONS: Low concentrations of total testosterone and SHBG were strongly associated with increased likelihood of having metabolic syndrome, independent of traditional cardiovascular risk factors and insulin resistance.