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1.
AJNR Am J Neuroradiol ; 37(10): 1898-1902, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27231227

RESUMEN

BACKGROUND AND PURPOSE: The champagne bottle neck sign represents a rapid reduction in the extracranial ICA diameters and is a characteristic feature of Moyamoya disease. However, the clinical significance of the champagne bottle neck sign is unclear. We investigated the relationship between the champagne bottle neck sign and the clinical and hemodynamic stages of Moyamoya disease. MATERIALS AND METHODS: We analyzed 14 patients with Moyamoya disease before revascularization (5 men, 9 women; age, 43.2 ± 19.3 years). The ratio of the extracranial ICA and common carotid artery diameters was determined using carotid ultrasonography or cerebral angiography; a ratio of < 0.5 was considered champagne bottle neck sign-positive. The clinical disease stage was determined using the Suzuki angiographic grading system. CBF and cerebral vasoreactivity also were measured. RESULTS: The ICA/common carotid artery ratio (expressed as median [interquartile range]) decreased as the clinical stage advanced (stages I-II, 0.71 [0.60-0.77]; stages III-IV, 0.49 [0.45-0.57]; stages V-VI, 0.38 [0.34-0.47]; P < .001). Lower ICA/common carotid artery ratio tended to occur in symptomatic versus asymptomatic arteries (0.47 [0.40-0.53] versus 0.57 [0.40-0.66], respectively; P = .06). Although the ICA/common carotid artery ratio was not related to cerebral perfusion, it decreased as cerebral vasoreactivity decreased (P < .01). All champagne bottle neck sign-positive arteries were classified as Suzuki stage ≥III, 73% were symptomatic, and 89% exhibited reduced cerebral vasoreactivity. In contrast, all champagne bottle neck sign-negative arteries were Suzuki stage ≤III, 67% were asymptomatic, and all showed preserved cerebral vasoreactivity. CONCLUSIONS: The champagne bottle neck sign was related to advanced clinical stage, clinical symptoms, and impaired cerebral vasoreactivity. Thus, detection of the champagne bottle neck sign might be useful in determining the clinical and hemodynamic stages of Moyamoya disease.

2.
Neuroradiology ; 48(1): 50-3, 2006 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16261335

RESUMEN

We describe two patients with symptomatic vasospasms after aneurysmal subarachnoid hemorrhage who were successfully treated with intraarterial injection of colforsin daropate hydrochloride (HCl). Colforsin daropate HCl is capable of directly stimulating adenylate cyclase, which in turn causes vasorelaxation via elevated intracellular concentrations of cyclic adenosine monophosphate. We suggest that colforsin daropate HCl might be a useful therapeutic tool in treating cerebral vasospasm.


Asunto(s)
Colforsina/análogos & derivados , Hemorragia Subaracnoidea/tratamiento farmacológico , Vasoespasmo Intracraneal/tratamiento farmacológico , Angiografía Cerebral , Colforsina/administración & dosificación , Colforsina/uso terapéutico , Femenino , Humanos , Inyecciones Intraarteriales , Persona de Mediana Edad , Hemorragia Subaracnoidea/complicaciones , Hemorragia Subaracnoidea/diagnóstico , Tomografía Computarizada de Emisión de Fotón Único , Vasoespasmo Intracraneal/diagnóstico , Vasoespasmo Intracraneal/etiología
3.
Interv Neuroradiol ; 12(Suppl 1): 193-6, 2006 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-20569630

RESUMEN

SUMMARY: In the safety stenting, it is important to get to know the characteristics of a plaque. In petrous carotid artery stenosis, it is difficult to know the characteristics of the plaque.We paid our attention to the MPRAGE (Magnetization Prepared Rapid Acquisition with Gradient Echo) method on high resolving power MRI. By the MPRAGE method, low intensity was observed in these lesions of all cases. This result suggested that the plaque in petrous portion was a fibrous plaque. This method is useful to get to know the characteristics of a plaque in petrous portion before endovascular treatment.

4.
Acta Neurochir (Wien) ; 146(5): 495-504, 2004 May.
Artículo en Inglés | MEDLINE | ID: mdl-15118887

RESUMEN

BACKGROUND: Our understanding of the pathogenesis of arteriovenous malformations (AVMs) and arteriovenous fistulas (AVFs) has been limited by the lack of adequate animal models. In this study we evaluate the time course of angiographic, hemodynamic and histopathological changes in an arteriovenous fistula in rats as a potential model. METHODS: An arteriovenous fistula was created by a side-to-end anastomosis of the common carotid artery (CCA) to the external jugular vein (EJV). The animals underwent angiography of the fistula and were sacrificed 1, 7, 21, 42 or 90 days later. Flow and pressure measurements were performed in the CCA and ipsi- and contralateral EJV and detailed histological examination of whole mount sections of the fistula and cranium were done on fixed sections. Immunohistochemistry for CD31, smooth muscle alpha-actin and Ki-67 were performed. FINDINGS: Hemodynamic changes occur immediately after fistula formation creating a stable high flow, low resistant state. This induces a gradual increase in the inner diameter of the EJV and transverse sinus followed by a decrease in size of the transverse sinus. This decrease is associated with increased expression of alpha-actin in the wall of the sinus. The fistula becomes angiographically and histologically stable after 21 days. CONCLUSION: This model describes the time course of hemodynamic and histopathological changes after occur after AVF formation. Stabilization after 21 days makes it an attractive model for mechanistic and therapeutic studies of AVFs.


Asunto(s)
Arteria Carótida Común/patología , Arteria Carótida Común/fisiopatología , Malformaciones Arteriovenosas Intracraneales/diagnóstico , Malformaciones Arteriovenosas Intracraneales/fisiopatología , Venas Yugulares/patología , Venas Yugulares/fisiopatología , Animales , Derivación Arteriovenosa Quirúrgica , Presión Sanguínea , Arteria Carótida Común/diagnóstico por imagen , Arteria Carótida Común/cirugía , Modelos Animales de Enfermedad , Venas Yugulares/diagnóstico por imagen , Venas Yugulares/cirugía , Masculino , Radiografía , Ratas , Ratas Sprague-Dawley , Flujo Sanguíneo Regional , Factores de Tiempo
5.
Acta Neurochir (Wien) ; 146(4): 329-35; discussion 335, 2004 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15057526

RESUMEN

BACKGROUND: Surgery of vertebral artery-posterior inferior cerebellar artery (VA-PICA) aneurysms is not easy because there is a close anatomical relationship between aneurysms and the surrounding neurovascular structures, and bony structures in the lateral foramen magnum. The preoperative evaluation for a circumstantial comprehension of anatomical relationships is very important for the surgical treatment of the VA-PICA aneurysms. Our experience in using three-dimensional CT angiography (3D-CTA) for the surgical management of VA-PICA aneurysms is herein reported. METHODS AND FINDINGS: We successfully performed neck clipping in 5 cases of VA-PICA aneurysm using 3D-CTA. On 3D reconstructed images, we could see the characteristics of the aneurysms such as their relationships to the jugular tubercle and hypoglossal canal, the projecting direction of the dome, and the configuration of the neck in each case. 3D-CTA also provided a clear surgical view as well as the relationships of the aneurysms to the VA and origin of the PICA. Based on such information, we selected the most appropriate surgical approach among the transcondylar fossa approach, the transcondylar approach, or the far lateral approach with a C1 laminectomy. CONCLUSIONS: Since 3D-CTA demonstrates the surgical anatomy of VA-PICA aneurysms in detail, it is very useful for helping surgeons to select the optimal approach.


Asunto(s)
Angiografía/métodos , Cerebelo/irrigación sanguínea , Cerebelo/diagnóstico por imagen , Aneurisma Intracraneal/diagnóstico por imagen , Aneurisma Intracraneal/cirugía , Procedimientos Quirúrgicos Vasculares/métodos , Arteria Vertebral/diagnóstico por imagen , Arteria Vertebral/patología , Adulto , Anciano , Femenino , Humanos , Imagenología Tridimensional , Masculino , Persona de Mediana Edad , Cuello/anatomía & histología , Instrumentos Quirúrgicos , Tomografía Computarizada por Rayos X
6.
Nihon Hinyokika Gakkai Zasshi ; 92(3): 451-6, 2001 Mar.
Artículo en Japonés | MEDLINE | ID: mdl-11398319

RESUMEN

PURPOSE: The prostate size and motivation to visit clinics were investigated in patients with prostate hyperplasia. OBJECTS AND METHODS: One hundred ninety-five patients who had urinary symptoms and visited our outpatient clinic between September 1994 and October 1999 and 268 age-matched volunteers in Mitaka City who underwent a medical examination of the prostate in June 1997 were compared. International Prostate Symptom Score (IPSS), Quality Of Life Score (QOL score), residual urine volume, prostate volume and urinary flow rate were measured. RESULTS: The prostate volume of the volunteers was 20-25 cm3 irrespective of the age. The prostate size of the outpatients was larger than that of the volunteers for every age group. IPSS and QOL score were significantly higher in the outpatients than in the volunteers. Diurnal urinary frequency and sense of residual urine contributed to the discrimination index of the two groups more significantly than the other scores. There was a significant correlation between prostate volume and residual urine volume. The score of weak urinary steam was inversely and significantly correlated with peak urinary flow rate. CONCLUSIONS: There was no age-related enlargement of the prostate gland. The prostate gland was significantly larger in the patients than in the volunteers even in those in their fifties. Urinary frequency and sense of residual urine are important factors for men to seek and receive medical care.


Asunto(s)
Instituciones de Atención Ambulatoria , Hiperplasia Prostática/diagnóstico , Micción/fisiología , Adulto , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Análisis por Apareamiento , Persona de Mediana Edad , Próstata/patología , Hiperplasia Prostática/fisiopatología , Calidad de Vida
7.
Nihon Hinyokika Gakkai Zasshi ; 92(1): 23-9, 2001 Jan.
Artículo en Japonés | MEDLINE | ID: mdl-11235139

RESUMEN

PURPOSE: In Mitaka city, mass screening for prostate cancer was conducted for 3 years from 1995 to 1997. Clinical stages were compared between patients found by screening and those diagnosed at our clinic during the same time. The significance of serum-free prostate specific antigen (PSA) in mass screening for prostate cancer was examined. MATERIAL AND METHODS: A prospective clinical trial was conducted on men aged 50 years or older. The primary examination consisted of taking the international prostate symptom score, quality of life score, PSA (Tandem-R) and digital rectal examination (DRE). If PSA was greater than 4.0 ng./ml and/or if DRE suggested cancer, transrectal ultrasound-guided sextant prostate biopsies were indicated. RESULTS: Of the men screened, 23.2% (320/1375) had serum PSA greater than 4.0 ng./ml. and/or suspicious findings on DRE. Biopsy was performed in 199 of 320 (62.1%). Cancer was detected in 21 (1.5%, 21/1375). Prostate cancer was found in one case among 154 males (0.65%, 1/154) who were screened twice or more. The cancer stage found by screening was significantly earlier than that diagnosed at the outpatient clinic (Wilcoxon's rank-sum test: p = 0.0047). Receiver operating characteristics analysis showed that the optimal free PSA-to-PSA ratio was 12%. Positive predictive value increased from 18% to 50% when free PSA-to-PSA ratio was combined with PSA. CONCLUSION: 1. Cancer detection rate was 1.5% in the mass screening in Mitaka City. 2. Cancer stage found by screening was significantly earlier than that diagnosed at the outpatient clinic. 3. Free PSA determination might eliminate unnecessary biopsies in men with PSA above 4.0 ng./ml with minimal loss of cancer detection.


Asunto(s)
Biomarcadores de Tumor/sangre , Tamizaje Masivo , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/diagnóstico , Anciano , Anciano de 80 o más Años , Humanos , Japón/epidemiología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Valor Predictivo de las Pruebas , Estudios Prospectivos , Neoplasias de la Próstata/epidemiología , Neoplasias de la Próstata/patología
8.
Lung Cancer ; 31(2-3): 285-93, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11165409

RESUMEN

Based on the results of our previous pilot study, we conducted a multi-institutional phase II study of combination chemotherapy consisting of oral UFT (Taiho Pharmaceutical Co. Ltd, Tokyo) plus cisplatin (CDDP) in patients with advanced non-small cell lung cancer (NSCLC). UFT capsule containing 100 mg tegafur and 224 mg uracil was orally administered in two divided doses on days 1 through 21 making the total tegafur dose 400 mg/m(2)/day (maximum 600 mg/body). CDDP was administered by drip infusion at a dose of 20 mg/m(2) on a 5-day schedule from day 8 to 12. Treatment was repeated every 4 weeks as long as the criteria for initiation of therapy were still met. Between April 1995 and March 1997, 51 patients were entered into the study. The mean age of all 50 eligible patients was 64 years(range: 40-78). There were 21 patients with clinical stage IIIB disease and 29 patients with IV disease. Thirty-two patients had adenocarcinoma, 14 had epidermoid carcinoma, and four had large cell carcinoma. Of the 47 assessable patients, 18 achieved a partial response with an overall response rate of 38.3% (95% confidence interval: 24.4-52.2%). The median response duration was 113 days. The median survival time of the eligible patients was 12.8 months, and the 1-year survival rate was 54%. Among the 51 patients enrolled, grade 3 or 4 leukopenia developed in one patient (2%), neutropenia in six patients (11. 8%), thrombocytopenia in six patients (11. 8%), and anemia in three patients (5. 9%). Non-hematological grade 3 or 4 toxicities included anorexia in 10 patients (19.6%), nausea in ten (19.6%), vomiting in two (3.9%), and diarrhea in two (3. 9%). Grade 3 abnormal laboratory data included bilirubinemia in four (7. 8%), GPT elevation in one (2.0%), and hematuria in one (2.0%). In conclusion, combination of CDDP plus oral UFT is efficacious, with low toxicity, in the treatment of advanced NSCLC. In particular, the low hematological toxicity may warrant application of this regimen to the treatment of elderly patients and in trials of concurrent chemoradiotherapy in patients with locally advanced NSCLC.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Neoplasias Pulmonares/tratamiento farmacológico , Administración Oral , Adulto , Anciano , Anemia/inducido químicamente , Antimetabolitos Antineoplásicos/administración & dosificación , Antimetabolitos Antineoplásicos/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Carcinoma de Pulmón de Células no Pequeñas/patología , Cisplatino/administración & dosificación , Cisplatino/efectos adversos , Femenino , Humanos , Neoplasias Pulmonares/patología , Masculino , Persona de Mediana Edad , Neutropenia/inducido químicamente , Análisis de Supervivencia , Tegafur/administración & dosificación , Tegafur/efectos adversos , Trombocitopenia/inducido químicamente , Resultado del Tratamiento , Uracilo/administración & dosificación , Uracilo/efectos adversos
9.
Neurol Res ; 22(2): 151-5, 2000 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10763501

RESUMEN

We studied the incidence and timing of hyponatremia (Na < 135 mEq l-1) after subarachnoid hemorrhage (SAH) with special reference to ruptured anterior communicating artery (A-com) aneurysms. Hunt and Kosnik (HK) grading, symptomatic vasospasm in A-com aneurysm, and hydrocephalus were analyzed for connections to hyponatremia in 55 patients with ruptured A-com aneurysms, 65 with ruptured internal cerebral artery (ICA) aneurysms, and 49 with ruptured middle cerebral artery (MCA) aneurysms. Hyponatremia occurred in 28 (51%) of 55 patients with A-com aneurysms and in nine (18%) of 49 patients with MCA aneurysms. Severe hyponatremia (Na < 130 mEq l-1) occurred in 16 patients (29%) in the A-com group, four patients (6%) in the ICA group, and three patients (6%) in the MCA group. The A-com aneurysm group had a significantly higher incidence of mild hyponatremia (p < 0.01) and severe hyponatremia (p < 0.001) than other groups. Among A-com cases, hyponatremia occurred significantly more often in HK grade III and IV cases (p < 0.05), in cases with vasospasm (p < 0.001), and in cases with hydrocephalus (p < 0.01). Respective days of onset for symptomatic vasospasm and for hyponatremia were day 7.6 +/- 4.4 and day 10.6 +/- 5.8 following SAH, representing a 3-day delay for hyponatremia (p < 0.05). In most patients hyponatremia resolved within 28 days following SAH. Hyponatremia occurred more often with A-com aneurysms, possibly because of vasospasm around the A-com or hydrocephalus causing hypothalamic dysfunction. Since hypervolemic therapy can cause hyponatremia, particularly careful observation is required during such therapy in patients with A-com aneurysm.


Asunto(s)
Aneurisma Roto/complicaciones , Hiponatremia/epidemiología , Hiponatremia/etiología , Aneurisma Intracraneal/complicaciones , Humanos , Hidrocefalia/complicaciones , Incidencia , Estudios Retrospectivos , Hemorragia Subaracnoidea/etiología , Vasoespasmo Intracraneal/epidemiología , Vasoespasmo Intracraneal/etiología
10.
Neuroradiology ; 42(3): 192-4, 2000 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10772140

RESUMEN

We report a case of cerebral air embolism resulting from accidental air infection during cerebral angiography. A 60-year-old man was accidentally injected with air via the left subclavian artery. Angiography demonstrated air within the basilar artery. The patient showed signs of posterior circulation ischaemia (confusion, blindness, gaze palsy and hemiparesis). However, MRI, including diffusion-weighted imaging, showed no abnormality 4 h later. The patient was treated with hyperbaric oxygen within 5 h of the embolism. All symptoms and signs resolved completely within a week.


Asunto(s)
Encéfalo/patología , Angiografía Cerebral/efectos adversos , Imagen Eco-Planar , Embolia Aérea/diagnóstico , Embolia Aérea/etiología , Embolia Intracraneal/diagnóstico , Embolia Intracraneal/etiología , Embolia Aérea/terapia , Humanos , Oxigenoterapia Hiperbárica , Embolia Intracraneal/terapia , Masculino , Persona de Mediana Edad
11.
No To Shinkei ; 52(11): 1019-23, 2000 Nov.
Artículo en Japonés | MEDLINE | ID: mdl-11215265

RESUMEN

Several authors described elevated natriuretic peptides, atrial natriuretic peptide(ANP) and brain natriuretic peptide (BNP), in patients with subarachnoid hemorrhage(SAH), which were account for inappropriate antidiuretic hormone(SIADH) or cerebral salt wasting syndrome(CSW). Although the secretion of natriuretic peptide depends on the total blood volume, central venous pressure, and cardiac output volume, the volume of fluid intake in patients with SAH had not been taken in consideration in previous report. We here examined the relationship between fluid intake and the natriuretic peptides in two cases without cardiac failure. ANP elevated 2 or 3 days after SAH and remained in normal range for 2 weeks. BNP elevated when the volume of fluid intake was increased, and BNP did not elevate during the periods with lower fluid intake. Several authors proposed the possibility of iatrogenic factor in natriuresis after SAH and these results supported this opinion.


Asunto(s)
Factor Natriurético Atrial/metabolismo , Fluidoterapia , Péptido Natriurético Encefálico/metabolismo , Hemorragia Subaracnoidea/metabolismo , Hemorragia Subaracnoidea/terapia , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad
12.
Neurol Res ; 21(8): 791-5, 1999 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-10596391

RESUMEN

We examined whether intracarotid infusion of bradykinin altered circulation in the normal canine brain. Twenty-four anesthetized dogs were divided into four groups receiving different doses of bradykinin (1, 2.5, 5, and 10 micrograms kg-1 min-1). Regional cerebral blood flow (rCBF) was measured continuously using laser Doppler flowmetry through a burr hole in the frontal bone. Systemic blood pressure (SBP) and heart rate (HR) were monitored simultaneously. Higher doses of bradykinin significantly but temporarily decreased rCBF and SBP immediately after the start of infusion; these parameters rapidly recovered and then were stable through the rest of the infusion. During this period, percent change in rCBF and SBP was small, and differences between groups were not significant. On the other hand, HR increased during infusion and remained high. SBP, rCBF, and HR returned to pre-infusion levels after bradykinin was stopped. The results suggest that intracarotid infusion of bradykinin for treatment of brain tumors would be safe in terms of circulation to the uninvolved brain.


Asunto(s)
Bradiquinina/farmacología , Circulación Cerebrovascular/efectos de los fármacos , Animales , Presión Sanguínea , Dióxido de Carbono/sangre , Arterias Carótidas , Perros , Frecuencia Cardíaca , Concentración de Iones de Hidrógeno , Infusiones Intraarteriales , Flujometría por Láser-Doppler , Oxígeno/sangre
13.
Respirology ; 4(2): 181-4, 1999 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10382238

RESUMEN

We experienced a rare case of lung adenocarcinoma associated with lymphocytic interstitial pneumonitis caused by primary Sjögren's syndrome. A 78-year-old woman was referred to our hospital because of progressive sicca syndrome and nodular opacities in the right lower lobe on chest radiograph. This patient was diagnosed as primary Sjögren's syndrome by a labial gland biopsy and classical clinical features including xerophthalmia, xerostomia and immunoserological findings. Pathological findings including immunohistochemical studies in a surgically resected lung revealed adenocarcinoma in lymphocytic interstitial pneumonitis associated with primary Sjögren's syndrome. There was no evidence of malignant lymphoma in the lymph nodes or resected lung tissue. Pulmonary involvement of Sjögren's syndrome is now regarded both clinically and histopathologically as a wide spectrum of lymphoproliferative disorders ranging from benign to malignant. However, lung cancer associated with primary Sjögren's syndrome, as in our case, has apparently not been reported previously.


Asunto(s)
Adenocarcinoma Papilar/etiología , Enfermedades Pulmonares Intersticiales/etiología , Neoplasias Pulmonares/etiología , Síndrome de Sjögren/complicaciones , Adenocarcinoma Papilar/diagnóstico , Adenocarcinoma Papilar/cirugía , Anciano , Biopsia , Diagnóstico Diferencial , Femenino , Humanos , Inmunohistoquímica , Enfermedades Pulmonares Intersticiales/diagnóstico , Enfermedades Pulmonares Intersticiales/cirugía , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/cirugía , Neumonectomía , Síndrome de Sjögren/diagnóstico , Tomografía Computarizada por Rayos X
14.
Neurol Res ; 21(3): 293-8, 1999 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-10319339

RESUMEN

The involvement of de novo nitric oxide synthase (NOS) induction in the development of cerebral vasospasm after subarachnoid hemorrhage (SAH) was examined using a rat model of SAH. SAH was induced by endovascular perforation with Nylon thread. The rats were killed at different time intervals, from one day to seven days after endovascular perforation. Inducible NOS messenger RNA (mRNA) expression was determined by reverse-transcription polymerase chain reaction (RT-PCR) and the distribution of iNOS positive cells was immunohistochemically examined. In the vascular tissue with a subarachnoid membrane, iNOS mRNA was expressed from one day to seven days after SAH. Inducible NOS positive cells were mainly recognized in the vascular tissue, but not in the brain parenchyma. The distribution of nitrotyrosine, an indicator of peroxynitrite production was also examined immunohistochemically and nitrotyrosine-positive cells were observed almost at the same sites of iNOS induction. To determine the role of iNOS in the development of cerebral vasospasm, we measured the diameter of the middle cerebral artery in animals either treated or not treated with aminoguanidine (AG), a selective inhibitor of iNOS. AG ameliorated the vasoconstrictive change after SAH. These results are thus considered to provide molecular and immunohistochemical evidence showing that iNOS expression following SAH and NO produced by iNOS can develop cerebral vasospasm after SAH.


Asunto(s)
Circulación Cerebrovascular/fisiología , Óxido Nítrico Sintasa/metabolismo , Hemorragia Subaracnoidea/metabolismo , Vasoconstricción/fisiología , Animales , Anticuerpos , Arterias Cerebrales/enzimología , Sondas de ADN , Endotelio Vascular/química , Endotelio Vascular/efectos de los fármacos , Endotelio Vascular/enzimología , Inhibidores Enzimáticos/farmacología , Regulación Enzimológica de la Expresión Génica , Guanidinas/farmacología , Inmunohistoquímica , Masculino , Óxido Nítrico Sintasa/genética , Óxido Nítrico Sintasa/inmunología , Óxido Nítrico Sintasa de Tipo II , Ratas , Ratas Wistar , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Tirosina/análogos & derivados , Tirosina/análisis , Vasoconstricción/efectos de los fármacos
15.
Nihon Kokyuki Gakkai Zasshi ; 36(1): 46-52, 1998 Jan.
Artículo en Japonés | MEDLINE | ID: mdl-9611976

RESUMEN

We studied relationships between maximal walking distance (WDmax) and frequency of both outing enumerated by the aim of each outing as well as by each outing per se in patients receiving home oxygen therapy (n = 109). The results were compared with those from members of a seniors' club (n = 434). A questionnaire was used to obtain WDmax, defined as the distance a subject could walk without rest on level ground. In the questionnaire, WDmax was classified into five groups including 50 m (the distance between two electric posts), 500 m, 1 km, 1.5 km and more than 1.5 km. Since few patients could walk 1.5 km or more, they were included into the "can walk 1 km or more group". Outing frequency was measured using a 4-week diary which showed eight aims of outings including shopping, seeing a doctor, visiting friends or relatives, doing a hobby practicing something, participating in a seniors' club and neighborhood meetings or events, traveling, work and others. The subjects checked the diary each time they went out. True outing frequency was defined as the number of outings. If a subject left home to shop and visited a friend on the way home, the outing frequency enumerated by aims was two, while the true outing frequency was one. The mean and SE (1/4 weeks/one subject) of true outing frequency for patients (21.4 +/- 2.2) was significantly less than that of seniors' club members (45.6 +/- 1.4). Even in patients with a WDmax of 1 km or more, the frequency of travel was significantly lower than in seniors' club members. Although outing frequencies for shopping, seeing friends or relatives, doing a hobby and work were not significantly different between the two groups at a WDmax of 1 km or more, the outing frequency for work of patients was significantly lower at a WDmax of 500 m, and outing frequencies for the remaining three aims became significantly lower at a WDmax of 50 m. We demonstrated that in patients receiving home oxygen therapy, outing frequency was limited. A new modality is necessary to increase the outing frequency and to improve the quality of life for these patients.


Asunto(s)
Disnea/fisiopatología , Servicios de Atención de Salud a Domicilio , Terapia por Inhalación de Oxígeno , Caminata , Anciano , Anciano de 80 o más Años , Enfermedad Crónica , Disnea/terapia , Femenino , Humanos , Masculino , Calidad de Vida , Encuestas y Cuestionarios
16.
Neurol Res ; 20(1): 79-84, 1998 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-9471107

RESUMEN

The possible expression of the inducible isoform of nitric oxide synthase (iNOS) was examined in a rat model of subarachnoid hemorrhage (SAH). Subarachnoid hemorrhage was induced by the injection of autologous blood into the cisterna magna using stereotactic technique under general anesthesia. The rats were then killed at specific time intervals between 4 hours to 7 days after SAH. Reverse-transcriptional polymerase chain reaction (RT-PCR) revealed the expression of iNOS mRNA in the homogenate obtained from the tissue around the circle of Willis one day after SAH (Day 1). No iNOS mRNA was detected either in the sham-operated animals, or at any of the other time intervals after SAH. An immunohistochemical study was performed to examine the localization of iNOS-positive cells in the central nervous system. Inducible NOS immunoreactivity was thus observed in the mononuclear cells and polymorphonuclear cells infiltrating into the subarachnoid space of the basal cistern on Day 1. This immunoreactivity persisted faintly on Day 2, but had completely disappeared on Day 7. A vascular diameter study disclosed a vasoconstrictive change in the middle cerebral artery after SAH. Taken together, these results are thus considered to confirm the expression of iNOS in the infiltrated inflammatory cells after the insult of SAH, which may therefore play an introductory role in the development of the pathological series of events after SAH, including vasospasm.


Asunto(s)
Regulación Enzimológica de la Expresión Génica , Óxido Nítrico Sintasa/genética , Hemorragia Subaracnoidea/metabolismo , Animales , Cisterna Magna/irrigación sanguínea , Cisterna Magna/enzimología , Cisterna Magna/patología , Modelos Animales de Enfermedad , Masculino , Óxido Nítrico Sintasa de Tipo II , Reacción en Cadena de la Polimerasa , ARN Mensajero/análisis , Ratas , Ratas Wistar , Hemorragia Subaracnoidea/patología , Vasoconstricción/fisiología
17.
Nihon Kyobu Shikkan Gakkai Zasshi ; 35(10): 1054-9, 1997 Oct.
Artículo en Japonés | MEDLINE | ID: mdl-9465615

RESUMEN

We examined family APGAR scores in patients on home oxygen therapy (n = 101) and their main caregivers (n = 91), and compared them with those obtained from members of a seniors' club who were not on home oxygen therapy themselves, nor had any family members on home oxygen therapy. Furthermore, the relationship between the main caregivers recognition of the patients' mental state and the patients' CESD score was examined. Family APGAR scores for the main caregivers were significantly lower than those of the patients (p < 0.002), or the seniors' club members (p < 0.004). Since most the main caregivers were women, we compared family APGAR scores of the female main caregivers and the age-matched female members of the seniors' club, revealing that the satisfaction of the female main caregivers with the "adaptation" component of the APGAR score (the component dealing with support given when something troublesome happens), was significantly lower than that of the members of the seniors' club (p < 0.0001). The CESD of the patients whom the main caregivers recognized as depressed was significantly higher. Thus, we concluded that satisfaction of the main caregivers with family function who were family members was low, and that the role of the main caregivers is important in alleviating the depression of patients on home oxygen therapy.


Asunto(s)
Cuidadores , Depresión , Familia , Servicios de Atención a Domicilio Provisto por Hospital , Enfermedades Pulmonares Obstructivas/psicología , Terapia por Inhalación de Oxígeno , Anciano , Femenino , Humanos , Enfermedades Pulmonares Obstructivas/terapia , Masculino , Persona de Mediana Edad , Satisfacción del Paciente
18.
Ryumachi ; 36(1): 34-42, 1996 Feb.
Artículo en Japonés | MEDLINE | ID: mdl-8711536

RESUMEN

Thirteen cases with rheumatoid arthritis who experienced lung injury during the treatment with bucillamine (Bc), about whom the questionnaires were answered by the physicians and whose X-ray films could be rechecked, were studied. Nine cases out of the 13 showed patchy mottled infiltrates in the bilateral center sparing the periphery, and the other 4 showed diffuse infiltrates. In these 9, serum gamma-globulin level decreased when lung injury appeared. The gamma-globulin level before the start of Bc administration, the level when lung injury appeared, the gamma-globulin decrease, and its ratio to the level before Bc were 1790 +/- 661 mg/dl, 1297 +/- 666 mg/dl, 459 +/- 320 mg/dl and 29.1 +/- 18.0%, respectively. In 5 out of the 9, gamma-globulin level reincreased when they recovered from the injury: 2 out of the 5 showed the reincrease even after steroid therapy. The data were obtained only from 2 out of the 4 with diffuse pattern in X-ray, and the decrease and the decrease ratio were 200 mg/dl (5.8%) in 1, and 49 mg/dl (3.6%) in the other. The characteristics of Bc-induced lung injury might be mottled infiltrates in the center appearing concurrently with serum immunoglobulin decrease.


Asunto(s)
Antiinflamatorios no Esteroideos/efectos adversos , Artritis Reumatoide/tratamiento farmacológico , Cisteína/análogos & derivados , Enfermedades Pulmonares/inducido químicamente , Anciano , Cisteína/efectos adversos , Cisteína/uso terapéutico , Diagnóstico Diferencial , Femenino , Humanos , Enfermedades Pulmonares/diagnóstico , Masculino , Persona de Mediana Edad , Tomografía Computarizada por Rayos X
19.
No To Shinkei ; 47(6): 569-73, 1995 Jun.
Artículo en Japonés | MEDLINE | ID: mdl-7605685

RESUMEN

A 52-year-old woman was admitted to our hospital because of nausea, headache, ataxic gait, and memory disturbance. CT scans and MRI showed a markedly enhanced lesion in the dura mater of the posterior fossa, edema in the right cerebellar hemisphere, occlusion of the transverse sinus, and hydrocephalus, suggesting hypertrophic pachymeningitis. Chronic otitis media and mastoiditis were also noted. Subjective complaints diminished after steroid administration. The patient underwent right suboccipital craniectomy and biopsy. The dura mater was markedly thickened, and the cerebellar surface was edematous. Histological examination revealed the thickened dura mater to be infiltrated by chronic inflammatory cells of forming lymphatic follicles and accompanied by Langhans giant cells. Inflammatory cells were not found in the cerebellar parenchyma, but were present in the subarachnoid space. Acid-fast stain, PAS and Grocott stain were negative. The cause of the hypertrophic pachymeningitis in this patient, may have been related to the chronic otitis media, but the patient's clinical course suggested that it might represent so-called "idiopathic hypertrophic pachymeningitis".


Asunto(s)
Duramadre/patología , Hidrocefalia/complicaciones , Meningitis/patología , Fosa Craneal Posterior , Femenino , Humanos , Angiografía por Resonancia Magnética , Imagen por Resonancia Magnética , Meningitis/complicaciones , Persona de Mediana Edad
20.
Nihon Kyobu Shikkan Gakkai Zasshi ; 33(4): 463-7, 1995 Apr.
Artículo en Japonés | MEDLINE | ID: mdl-7791278

RESUMEN

A 59-year-old man had an abnormal shadow on chest X-ray film. He was admitted to Tohoku-chuou Hospital, and a lung lesion in the right lower lobe was diagnosed as a benign nodule. A new nodular lesion appeared on a chest X-ray film taken two months after his discharge from the hospital. Both lesions were in the same lobe; the older one was in segment 9 and the newer one was in segment 10. For the lesion in segment 10, malignancy was not ruled out, so open lung biopsy (right lower lobectomy) was done. With the findings of angitis and focal necrosis surrounded by granulomas consisting of epthelioid cells and multinuclear giant cells, the new lesion in segment 10 was diagnosed as necrotizing sarcoid granulomatosis. The older lesion in segment 9 was a tuberculoma. We conclude that in this case the open lung biopsy was necessary to diagnose necrotizing sarcoid granulomatosis in lung.


Asunto(s)
Granuloma/patología , Pulmón/patología , Sarcoidosis Pulmonar/patología , Diagnóstico Diferencial , Humanos , Masculino , Persona de Mediana Edad , Necrosis , Tuberculosis Pulmonar/complicaciones
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