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1.
MethodsX ; 9: 101797, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35958099

RESUMEN

We describe here a novel assay that determines the total a+ntioxidative activities of known antioxidants and antioxidants in beverages. The method employs the substrate 3,5-dibromo-4-nitrosobenzene sulfonate (DBNBS) that yields the colored product 3,5,3',5'-tetrabromoazobenzene sulfate sodium salt (azo-TBBS). The amounts of azo-TBBS are measured using HPLC and then used to calculate total antioxidative capacity (TAC) values. We first show that the TAC values measured using the new DBNBS system were significantly higher compared with the control. The assay was validated through further analysis of 56 compounds, including previously characterized antioxidants. The data are consistent with published values. Here we describe in detail the application of the DBNBS method to the measurement of the TAC values of eight beverages, including wines and fruit juices. The DBNBS assay employs a readily applicable protocol that sensitively determines the levels of antioxidants in foodstuffs. - A new DBNBS-mediated antioxidant assay system is compared with standard DPPH and ORAC assays - DBNBS traps hydrogen radicals to generate a readily measured colored reduction product that quantifies antioxidant levels.

2.
Pharmaceutics ; 13(3)2021 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-33809385

RESUMEN

Dementia is one of the most common causes of disability worldwide characterized by memory loss, cognitive impairment, and behavioral and psychological symptoms (BPSD), including agitation. Treatment of the latter consists of the off-label use of harmful atypical antipsychotics, though a significant reduction is afforded by pain control. The use of an essential oil endowed with analgesic properties and devoid of toxicity would represent an important option for the management of agitation in dementia. Therefore, the aim of this study was to engineer a nanotechnology delivery system based on solid lipid nanoparticles loaded with bergamot essential oil (BEO) and devised in the pharmaceutical form of an odorless cream (NanoBEO) to confirm its analgesic efficacy for further development and application to control agitation in dementia. BEO has proven strong antinociceptive and anti-allodynic properties and, in its bergapten-free form, it is completely devoid of phototoxicity. NanoBEO has been studied in vivo confirming the previously reported analgesic activity of BEO to which is now added its anti-itching properties. Due to the nanotechnology delivery system, the stability of titrated BEO components is guaranteed. Finally, the latter invention, currently under patent consideration, is smell-devoid allowing efficacy and safety to be established in double-blind clinical trials; until now the latter studies have been impeded in aromatherapy by the strong odor of essential oils. A clinical trial NCT04321889 has been designed to provide information about the efficacy and safety of NanoBEO on agitation and pain in patients suffering from severe dementia.

3.
Intern Med ; 60(17): 2749-2755, 2021 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-33746167

RESUMEN

Objective The aim of this study was to clarify the circadian and seasonal variations in addition to identify sex-based differences in Japanese patients with Takotsubo syndrome (TTS). Methods The authors conducted a retrospective observational study to analyse the differences between the groups based on sex. Patients The patients were registered out of each institute registry of the acute coronary syndrome (ACS) which contains a total of 10,622 cases in eight academic hospitals in east Japan. Results Data for 344 consecutive TTS (73 male and 271 female) were extracted from each hospital registry. In-hospital mortality was higher in the male group than in the female group (18% vs. 7%; p=0.005). With regard to the circadian variations in all study patients, TTS events occurred most often in the afternoon and least often during the night. Moreover, the patterns of circadian variations in the female and male groups were the same as that of all study patients. TTS events occurred most frequently in the autumn and least often in the spring in the whole study cohort. Moreover, the seasonal variation in the female group showed the same pattern as that of the whole cohort. However, there were no significant seasonal differences in the incidence of TTS in the male group. Conclusion In a multicenter study in Japan, seasonal variation was observed in the female group but not in the male group. Circadian variation was observed in both groups. These results suggested that the pathogenesis and clinical features of TTS might therefore differ according to sex.


Asunto(s)
Cardiomiopatía de Takotsubo , Femenino , Hospitales Universitarios , Humanos , Japón/epidemiología , Masculino , Sistema de Registros , Estaciones del Año , Factores Sexuales , Cardiomiopatía de Takotsubo/diagnóstico , Cardiomiopatía de Takotsubo/epidemiología
4.
Cardiovasc Interv Ther ; 36(4): 418-428, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33037569

RESUMEN

This study aimed at identifying the clinical characteristics and in-hospital outcomes of patients treated with polytetrafluorethylene (PTFE)-covered stents after coronary interventions in a multicenter registry. Subjects with coronary artery perforation were selected from 31,262 consecutive patients who underwent coronary interventions in the hospital registries. Subjects were divided into two groups: those with a PTFE-covered stent implantation and those without a PTFE-covered stent implantation. Clinical characteristics and in-hospital outcomes were compared between the two groups. Data for 82 consecutive coronary perforations (15 PTFE-covered stents and 67 non-PTFE-covered stents) were extracted from each hospital registry. The PTFE-covered stent group had a higher prevalence of perforations due to pre-dilatation before stenting or post-dilatation after stenting (80% vs. 10.4%; p < 0.001), more Ellis classification III perforations (66.6% vs. 28.4%; p = 0.019), longer perforation to hemostasis time (74 min vs. 10 min; p < 0.001), lower hemostatic success rates (73.3% vs. 94.0%; p = 0.015), and higher in-hospital mortality (26.7% vs. 6.0%; p = 0.015) than the non-PTFE-covered stent group. Although the prevalence of intravascular ultrasound (IVUS) usage was high during coronary interventions (86.7%), IVUS was performed in less than half the cases just before coronary perforations (47%) in the PTFE-covered stent group. Patients requiring PTFE-covered stents are more likely to be observed after balloon dilatation before or after stenting and have a poor prognosis. Careful coronary intervention is needed when IVUS image acquisition is not achieved in addition to proper evaluation of IVUS. Furthermore, if coronary artery perforation occurs, it is important to determine the need for a prompt PTFE-covered stent.


Asunto(s)
Vasos Coronarios , Politetrafluoroetileno , Angiografía Coronaria , Vasos Coronarios/diagnóstico por imagen , Vasos Coronarios/cirugía , Humanos , Estudios Multicéntricos como Asunto , Diseño de Prótesis , Sistema de Registros , Stents , Resultado del Tratamiento
5.
Front Pharmacol ; 11: 1310, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32973528

RESUMEN

Neuropathic pain is an intractable chronic pain condition that is mainly caused by allodynia. We had previously reported that intra-plantar administration of bergamot essential oil (BEO) containing an aromatic compound significantly suppressed partial sciatic nerve ligation (PSNL)-induced mechanical allodynia via opioid mu receptors in mice. However, it has also been reported that the inhalation of BEO reduced formalin-induced nociceptive responses. Therefore, we aimed to elucidate whether the analgesic action of BEO is mediated by olfactory stimulation through volatile components. In the current study, BEO was continuously administered with an osmotic pump during PSNL surgery, and the effects on mice behavior were examined pharmacologically using a double activity monitoring system, which can detect two-dimensional planar motion in a cage with an infrared beam sensor as well as active motion with a running wheel. Here, we report that the two-dimensional planar activity significantly increased in mice with PSNL in the light phase (from 8 o'clock to 20 o'clock) but not in the dark phase (from 20 o'clock to 8 o'clock) from the second day after surgery. However, this increase was not observed when BEO was continuously administered. The effect of BEO on the two-dimensional planar counts in mice with PSNL was antagonized by naloxone hydrochloride. Regarding the running wheel activity, the number of rotations decreased by PSNL in the dark phase from the 8th day after surgery. However, this was not apparent with BEO use. The effect of BEO on the number of rotations was also antagonized by naloxone hydrochloride. Furthermore, inhalation of BEO in PSNL mice did not affect mechanical allodynia or the two-dimensional planar motion or running wheel activities. These findings indicate that BEO exhibits an analgesic action, which is mediated by opioid receptors and not by the olfactory system.

6.
Theranostics ; 10(4): 1694-1707, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32042330

RESUMEN

Monocyte derived macrophages (MDMs) infiltrate sites of infection or injury and upregulate cyclooxygenase-2 (COX-2), an enzyme that stimulates prostaglandin-E2 (PgE2). Nanotheranostics combine therapeutic and diagnostic agents into a single nanosystem. In previous studies, we demonstrated that a nanotheranostic strategy, based on theranostic nanoemulsions (NE) loaded with a COX-2 inhibitor (celecoxib, CXB) and equipped with near-infrared fluorescent (NIRF) reporters, can specifically target circulating monocytes and MDMs. The anti-inflammatory and anti-nociceptive effects of such cell-specific COX-2 inhibition lasted several days following Complete Freund's Adjuvant (CFA) or nerve injury in male mice. The overall goal of this study was to investigate the extended (up to 40 days) impact of MDM-targeted COX-2 inhibition and any sex-based differences in treatment response; both of which remain unknown. Our study also evaluates the feasibility and efficacy of a preclinical nanotheranostic strategy for mechanistic investigation of the impact of such sex differences on clinical outcomes. Methods: CFA was administered into the right hind paws of male and female mice. All mice received a single intravenous dose of NIRF labeled CXB loaded NE twelve hours prior to CFA injection. In vivo whole body NIRF imaging and mechanical hypersensitivity assays were performed sequentially and ex vivo NIRF imaging and immunohistopathology of foot pad tissues were performed at the end point of 40 days. Results: Targeted COX-2 inhibition of MDMs in male and female mice successfully improved mechanical hypersensitivity after CFA injury. However, we observed distinct sex-specific differences in the intensity or longevity of the nociceptive responses. In males, a single dose of CXB-NE administered via tail vein injection produced significant improved mechanical hypersensitivity for 32 days as compared to the drug free NE (DF-NE) (untreated) control group. In females, CXB-NE produced similar, though less prominent and shorter-lived effects, lasting up to 11 days. NIRF imaging confirmed that CXB-NE can be detected up to day 40 in the CFA injected foot pad tissues of both sexes. There were distinct signal distribution trends between males and females, suggesting differences in macrophage infiltration dynamics between the sexes. This may also relate to differences in macrophage turnover rate between the sexes, a possibility that requires further investigation in this model. Conclusions: For the first time, this study provides unique insight into MDM dynamics and the early as well as longer-term targeted effects and efficacy of a clinically translatable nanotheranostic agent on MDM mediated inflammation. Our data supports the potential of nanotheranostics as presented in elucidating the kinetics, dynamics and sex-based differences in the adaptive or innate immune responses to inflammatory triggers. Taken together, our study findings lead us closer to true personalized, sex-specific pain nanomedicine for a wide range of inflammatory diseases.


Asunto(s)
Inflamación/tratamiento farmacológico , Macrófagos/efectos de los fármacos , Nanomedicina/métodos , Dolor/tratamiento farmacológico , Adyuvantes Inmunológicos/administración & dosificación , Adyuvantes Inmunológicos/farmacología , Administración Intravenosa , Animales , Celecoxib/administración & dosificación , Celecoxib/farmacología , Celecoxib/uso terapéutico , Ciclooxigenasa 2/metabolismo , Inhibidores de la Ciclooxigenasa 2/administración & dosificación , Inhibidores de la Ciclooxigenasa 2/farmacología , Inhibidores de la Ciclooxigenasa 2/uso terapéutico , Dinoprostona/metabolismo , Modelos Animales de Enfermedad , Sistemas de Liberación de Medicamentos , Estudios de Factibilidad , Femenino , Adyuvante de Freund/administración & dosificación , Adyuvante de Freund/farmacología , Inflamación/inducido químicamente , Masculino , Ratones , Dolor/inducido químicamente , Caracteres Sexuales , Regulación hacia Arriba
7.
Front Pediatr ; 7: 275, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31338354

RESUMEN

Background: Acute coronary syndrome (ACS), which is emerging in adults long after confirmed (followed-up or lost-to-follow), or missed Kawasaki disease (KD), is poorly characterized. Methods and Results: A Japanese retrospective nationwide hospital-based questionnaire survey of ACS during 2000-09 was conducted to characterize such patients. Among a total of 67 patients (median age 35, male 76%) recruited, low conventional coronary risks (≤1/6) was noted in 75%, a diagnosis of ST-elevation and myocardial infarction or cardiac arrest in 66%, medication before ACS in 22% (warfarin in 4%), and no prior history of acute myocardial infarction in 94%. One-month mortality was 19%. KD diagnosis was made in 32 during acute illness (Group A), in which 17 were lost to follow, and retrospectively in the other 35 from coronary imaging at ACS (Group B). Group A developed ACS at lower coronary risks (≤2/5 in 87 vs. 65% in group B, p = 0.043) at a younger age (26.5 vs. 40 yo, p < 0.001). In group A, followed-up patients developed ACS under medication before ACS (87 vs. 0% in lost-to-follow patients, p < 0.001) for giant aneurysm in culprit lesions (69 vs. 29%, p = 0.030). One-month mortality was comparable between groups A and B, and between patients followed-up and lost-to-follow in group A. The culprit lesion in group A was characterized by the association of an aneurysm ≥6 mm in acute KD (100%), lack of significant stenosis (61%) or giant aneurysm (50%) in the long-term (median interval 16 y), and the presence of intravascular ultrasound-derived calcification at ACS (86%). Conclusions: The present retrospective nationwide questionnaire survey demonstrated nationwide emergence of initial ACS in young adults at low coronary risks, who are followed-up or lost-to-follow after confirmed KD and initial coronary aneurysms ≥6 mm.

8.
Neurosci Lett ; 699: 103-108, 2019 04 23.
Artículo en Inglés | MEDLINE | ID: mdl-30690119

RESUMEN

Sinomenine, an alkaloid originally isolated from the roots and the rhizome of Sinomenium acutum is used as a traditional Chinese herbal medicines for rheumatoid arthritis and neuralgia. The aims of this study were to investigate the effects of oral administration of shinomenine on formalin-induced nociceptive behavior in mice and the opioid receptor subtypes involved in the antinociceptive effects of sinomenine. Our findings showed that a single dose of oral-administrated sinomenine inhibited the formalin induced licking and biting responses in a dose-dependent manner. Intraperitoneal pretreatment with naloxone hydrochloride, an opioid receptor antagonist, and ß-funaltrexamine hydrochloride (ß-FNA), a selective µ-opioid receptor antagonist, significantly attenuated sinomenine induced antinociception, but not by naltrindole, a nonselective δ-opioid receptor antagonist and nor-binaltorphimine, a selective κ-opioid receptor antagonist. Furthermore, in western blot analysis, oral administration of sinomenine resulted in a significant blockage of spinal extracellular signal-regulated protein kinase (ERK1/2) activation induced by formalin. Naloxone hydrochloride and ß-FNA significantly reversed the blockage of spinal ERK1/2 activation induced by sinomenine. These results suggest that sinomenine-induced anti nociceptive effect and blockage of spinal ERK1/2 activation may be triggered by activation of µ-opioid receptors.


Asunto(s)
Formaldehído , Morfinanos/farmacología , Nocicepción/efectos de los fármacos , Receptores Opioides mu/metabolismo , Administración Oral , Analgésicos/farmacología , Animales , Relación Dosis-Respuesta a Droga , Masculino , Ratones , Proteína Quinasa 1 Activada por Mitógenos/metabolismo , Proteína Quinasa 3 Activada por Mitógenos/metabolismo , Morfinanos/administración & dosificación , Morfinanos/antagonistas & inhibidores , Naloxona/farmacología , Naltrexona/análogos & derivados , Naltrexona/farmacología , Médula Espinal/metabolismo
9.
Neurosci Lett ; 686: 127-132, 2018 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-30201308

RESUMEN

The essential oil of bergamot (BEO) is one of the most common essential oils and is most familiar to the general public. The aims of this study were to investigate the effect of intraplantar (i.pl.) BEO on neuropathic allodynia induced by partial sciatic nerve ligation (PSNL) in mice and the opioid receptor subtypes involved in the antiallodynic effects of BEO. Our findings showed that a single dose of i.pl. administration of BEO significantly inhibited the PSNL-induced neuropathic pain using the von Frey test. The i.pl pretreatment with naloxone methiodide, a peripherally acting µ-opioid receptor preferring antagonist, ß-funaltrexamine hydrochloride (ß-FNA), a selective µ-opioid receptor antagonist, and ß-endorphin antiserum significantly reversed the antiallodynic effect of BEO in the von Frey test, but not by naltrindole, the nonselective δ-opioid receptor antagonist and nor-binaltorphimine, the selective κ-opioid receptor antagonist. Furthermore, in the western blotting analysis, i.pl. administration of BEO resulted in a significant blockage of spinal extracellular signal-regulated protein kinase (ERK) activation induced by PSNL. Naloxone methiodide and ß-FNA significantly reversed the blockage of spinal ERK activation induced by BEO. These results suggest that i.pl. injection of BEO-induced antiallodynic effect and blockage of spinal ERK activation may be triggered by activation of peripheral µ-opioid receptors.


Asunto(s)
Analgésicos Opioides/farmacología , Hiperalgesia/tratamiento farmacológico , Traumatismos de los Nervios Periféricos/tratamiento farmacológico , Aceites de Plantas/farmacología , Receptores Opioides mu/efectos de los fármacos , Animales , Masculino , Ratones , Antagonistas de Narcóticos/farmacología , Neuralgia/tratamiento farmacológico , Aceites Volátiles/farmacología , Receptores Opioides/efectos de los fármacos , Receptores Opioides/metabolismo
10.
Musculoskeletal Care ; 16(4): 494-499, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-29956446

RESUMEN

AIM: A challenge to the medical care of patients with rheumatoid arthritis (RA) is the management of the wide variety of information, including medication history and disease status, obtained from multiple sources to inform treatment decisions. To address this important clinical issue, we developed a data management system, based on smart device technology, and evaluated the benefit of this information to medical experts in helping them to form an impression of patients' health and disease, and treatment status before examination. METHODS: Fifty-seven patients with RA input relevant information about their condition and responses to a self-report health assessment questionnaire into a smart device template before their scheduled examination. The efficacy of the system was assessed as a decrease in examination time at each visit, and the correlation between the self-reported Multi-Dimensional Health Assessment Questionnaire and the 28-joint Disease Activity Score 28-joint count erythrocyte sedimentation rate (DAS28-ESR), which was used as a gold standard. RESULTS: Examination duration was reduced in most patients at each visit. During the study, there were no limitations for patients with poor eyesight or severe arthropathy in using the system. In fact, the majority of patients found the smart technology to be easier to use than hand-written questionnaires and health forms, regardless of age and disease activity. CONCLUSIONS: Our findings support the use of smart technology to provide accurate patient-specific data and to streamline the process of medical care for patients with RA.


Asunto(s)
Artritis Reumatoide/complicaciones , Artritis Reumatoide/diagnóstico , Computadoras de Mano , Sistemas de Información en Salud , Autoinforme , Adulto , Anciano , Anciano de 80 o más Años , Artritis Reumatoide/psicología , Actitud del Personal de Salud , Femenino , Indicadores de Salud , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Examen Físico
11.
Int Heart J ; 58(6): 1020-1023, 2017 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-29162777

RESUMEN

Here, we report on a healthy 30-year-old man with no significant medical history, who tested negative for human immunodeficiency virus antigenemia but developed Aspergillus pancarditis. A case of this kind is extremely rare, and to the best of our knowledge, this is the first report of a patient with Aspergillus pancarditis, which generally leads to a very poor outcome, who had a long-term favorable clinical course. A biopsy from the right atrium of hypertrophied atrial septum was essential for obtaining the definitive diagnosis. Long-term administration of an effective antifungal oral agent might account for the patient's favorable outcome.


Asunto(s)
Antifúngicos/administración & dosificación , Aspergilosis/tratamiento farmacológico , Cardiopatías/microbiología , Voriconazol/administración & dosificación , Adulto , Cardiopatías/tratamiento farmacológico , Humanos , Masculino
13.
J Cardiovasc Electrophysiol ; 28(11): 1259-1268, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28727202

RESUMEN

BACKGROUND: Atrial low-voltage zones (LVZ) are suggested as important factors for maintaining persistent atrial fibrillation (PsAF). The relationship between LVZs and left atrial (LA) contact areas (CoAs) is still unclear. OBJECTIVE: To assess whether CoA regions were involved in atrial substrate properties maintaining PsAF. METHODS: A total of 50 patients with PsAF (36 long-lasting) were analyzed. Three representative CoA detection areas (ascending aorta-anterior-LA, descending aorta-left pulmonary vein antrum, and vertebrae-posterior-LA) were registered on the mapping geometry. Electrograms during AF and sinus rhythm (SR) were acquired, and the fractionated electrograms (CFE; < 80milliseconds) and voltages were analyzed regarding the CoAs. RESULTS: After SR conversion, 76% (38/50) had a significant LVZ (>5% of the total LA surface area). Patients with long-lasting PsAF versus PsAF had larger CoA areas (7.7 ± 3.0 vs. 4.5 ± 2.5cm2 , P < 0.05) and overlapped-LVZs (8.2 [3.2-11.0] vs. 2.1 [0.7-3.7] cm2 , P = 0.0126) between the SR-LVZs (<0.5 mV) and AF-LVZs (<0.2 mV). Overlapped-LVZs were frequently observed in CoA regions (anterior 76.4%; LIPV antrum 78.8%, and vertebrae 39.2%), and those LVZs had smaller unipolar voltages than those distant from the CoA regions (0.64 ± 0.16 vs. 2.5 ± 1.5 mV, P < 0.0001). SR-LVZ targeted ablation, including of CoA regions, rendered AF termination (n = 8, 21%), and 88% of the sites were not located immediately above, but adjacent to, the overlapped-LVZs. Significant AF slowing (6.0 ± 0.6 to 5.6 ± 0.6 Hz; P < 0.05) accompanied by unintentional CFE elimination (9.8-1.8 cm2 ; P < .0001) was achieved in patients without termination. CONCLUSION: Our data suggested that external structures in contact with the LA are involved in the creation of localized diseased myocardium necessary for PsAF maintenance.


Asunto(s)
Fibrilación Atrial/diagnóstico por imagen , Fibrilación Atrial/cirugía , Ablación por Catéter/métodos , Técnicas Electrofisiológicas Cardíacas/métodos , Atrios Cardíacos/diagnóstico por imagen , Atrios Cardíacos/cirugía , Anciano , Fibrilación Atrial/fisiopatología , Estudios de Cohortes , Femenino , Frecuencia Cardíaca/fisiología , Humanos , Masculino , Persona de Mediana Edad , Venas Pulmonares/diagnóstico por imagen , Venas Pulmonares/cirugía , Estudios Retrospectivos , Nodo Sinoatrial/fisiología
14.
Intern Med ; 56(9): 1053-1055, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28458311

RESUMEN

A 45-year-old man complained of swelling of the left side of his neck and left upper limb. Ultrasonography and enhanced computed tomography (CT) revealed thrombosis of the left internal jugular, subclavian, and brachiocephalic vein. Based on various examinations, the patient was diagnosed with idiopathic venous thrombosis early in his clinical course. There were no findings to suggest malignancy or abnormal coagulability. However, two months after the start of treatment, the patient was diagnosed with gastric cancer. Despite the presence of Trousseau syndrome, treatment with edoxaban (an oral anticoagulant), reduced the swelling dramatically without any bleeding complications.


Asunto(s)
Venas Braquiocefálicas/fisiopatología , Inhibidores del Factor Xa/uso terapéutico , Venas Yugulares/fisiopatología , Piridinas/uso terapéutico , Vena Subclavia/fisiopatología , Tiazoles/uso terapéutico , Trombosis/diagnóstico , Trombosis/tratamiento farmacológico , Extremidad Superior/fisiopatología , Venas Braquiocefálicas/diagnóstico por imagen , Humanos , Venas Yugulares/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Vena Subclavia/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Extremidad Superior/diagnóstico por imagen
15.
J Interv Card Electrophysiol ; 48(1): 89-97, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27658928

RESUMEN

PURPOSE: The atrial conduction time measured by echocardiography using tissue Doppler imaging (TDI) has been reported as a predictive factor of left atrial (LA) remodeling. We investigated the P wave to LA appendage (LAA) conduction time defined by transthoracic echocardiography using TDI (P-LAA TDI), and directly compared the actual LA electrical conduction time determined by the electrophysiological data. Additionally, we confirmed the clinical utility of the P-LAA TDI by examining the relationship to the electroanatomical LA remodeling data. METHODS: Sixty-three AF patients (22 paroxysmal AF, 41 persistent AF) underwent ablation and electroanatomical LA mapping. The P-LAA TDI was measured after the ablation and was compared with the electrophysiological data during sinus rhythm, including the actual electrical conduction time. RESULTS: A strong linear correlation (r = 0.776, p < 0.001, y = 1.28x + 49) was observed between the P-LAA TDI (161 ± 24 ms) and electrophysiological P-LAA time (87 ± 15 ms). The P-LAA TDI was also strongly correlated with the LA volume (173 ± 52 ml, r = 0.632, p < 0.001) and LA conduction velocity index (1.07 ± 0.19 mm/ms, r = -0.735, p < 0.001), but less to the focal anterior-LVA region surface area (2.2 [0.4-5.0] cm2, r = 0.380, p = 0.002). Additionally, a stepwise multiple linear regression demonstrated that both the LA volume and LA conduction velocity index were strongly associated with the value of the P-LAA TDI (p < 0.001). CONCLUSIONS: The P-LAA TDI was useful for estimating the actual electrophysiological conduction time and represented both electrical and anatomical LA remodeling.


Asunto(s)
Fibrilación Atrial/fisiopatología , Función Atrial , Remodelación Atrial , Mapeo del Potencial de Superficie Corporal/métodos , Diagnóstico por Imagen de Elasticidad/métodos , Sistema de Conducción Cardíaco/fisiopatología , Apéndice Atrial/diagnóstico por imagen , Apéndice Atrial/fisiopatología , Fibrilación Atrial/diagnóstico por imagen , Ecocardiografía Doppler/métodos , Acoplamiento Excitación-Contracción , Femenino , Sistema de Conducción Cardíaco/diagnóstico por imagen , Humanos , Masculino , Persona de Mediana Edad , Conducción Nerviosa , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
17.
Case Rep Cardiol ; 2016: 8502356, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27516912

RESUMEN

A 66-year-old man was admitted to our institute because of chest pain. He had undergone replacement of the ascending aorta due to aortic dissection 9 years previously. We made a diagnosis of acute coronary syndrome, and coronary artery angiography was performed. Although the right coronary artery was successfully cannulated, a severe bend of the artificial aorta made it very difficult to advance the catheter into the left coronary artery. Ultimately, a DIO thrombus aspiration catheter was used to enter the left coronary artery, and a stent was implanted successfully. The DIO catheter is very useful when the selection of a guiding catheter is complicated, such as in the case of severe vessel tortuosity or a bend of the ascending aorta.

18.
Int J Cardiol ; 222: 113-118, 2016 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-27494722

RESUMEN

BACKGROUND: Despite the low restenosis rates of drug-eluting stents (DES), several problems remain, including stent thrombosis, stent fracture, and neo-atherosclerosis. 'Stent-less' (balloon alone) percutaneous coronary intervention (PCI) is still being used, and several clinical trials have supported the efficacy of DCB. The aim of this study was to investigate the efficacy of a drug-coated balloon (DCB) in the treatment of de novo coronary artery disease. METHODS: We enrolled 60 consecutive patients who had been given elective PCI between May 2014 and June 2015. They were randomly assigned to a 'stent-less' group (n=30) and a 'stent' group (n=30). Twenty-seven patients were treated with DCB alone and 33 with DES, and then evaluated for target lesion revascularization (TLR) rate and by quantitative coronary angiography (QCA) eight months later. RESULTS: TLR rates were similar in the two groups (DCB; 0.0%, DES; 6.1%, P=0.169). In the QCA analysis, minimal lumen diameter (MLD) and acute gain were significantly smaller in the DCB group than in the DES group immediately after PCI (2.36±0.46 vs 2.64±0.37, P=0.011, and 1.63±0.41 vs 2.08±0.37, P<0.0001, respectively). Eight months after PCI, however, there was no significant difference in MLD or late lumen loss between the two groups. CONCLUSIONS: A 'stent-less' PCI using DCB could be useful even in the DES era. After 'stent-less' PCI, antiplatelet agents might be reduced or discontinued more safely than after DES implantation.


Asunto(s)
Angioplastia Coronaria con Balón , Enfermedad de la Arteria Coronaria , Reestenosis Coronaria , Vasos Coronarios/diagnóstico por imagen , Stents Liberadores de Fármacos/efectos adversos , Anciano , Angioplastia Coronaria con Balón/efectos adversos , Angioplastia Coronaria con Balón/instrumentación , Angioplastia Coronaria con Balón/métodos , Antineoplásicos Fitogénicos/uso terapéutico , Angiografía Coronaria/métodos , Enfermedad de la Arteria Coronaria/diagnóstico , Enfermedad de la Arteria Coronaria/fisiopatología , Enfermedad de la Arteria Coronaria/cirugía , Reestenosis Coronaria/diagnóstico , Reestenosis Coronaria/etiología , Reestenosis Coronaria/prevención & control , Femenino , Humanos , Masculino , Persona de Mediana Edad , Paclitaxel/uso terapéutico , Resultado del Tratamiento
19.
Int J Cardiol ; 222: 202-208, 2016 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-27497095

RESUMEN

BACKGROUND: A high catheter tip-tissue contact force (CF) with the myocardium may cause 3-dimensional (3D) map distortion, however, the influence of external structures surrounding the left atrium (LA) on that distortion remains unknown. This study characterized the impact of high CF mapping on the local LA geometry distortion. METHODS: Thirty AF patients underwent 3D-ultrasound merged with CT images (3D-Merge-CT). The LA area in contact with external structures was identified by enhanced CT. Fast-electroanatomical-mapping (FAM) geometries were created by two methods, point-by-point mapping with high (>10g) CFs (high-CF guided-FAM), followed by that with multielectrode-mapping catheters (conventional-FAM). The resulting geometries were compared with the 3D-Merge-CT images. RESULTS: Three representative anatomical contact areas (ascending aorta-vs.-anterior wall, descending aorta-vs.-left pulmonary vein [PV], and vertebrae-vs.-posterior wall) were identified. The PV antrum distorted distance on the 3D-Merge-CT was significantly longer for high-CF guided-FAMs than conventional-FAMs (1.7[0-3.6] vs. 0[0-1.8]mm, P<0.0001). In high-CF maps, the distorted distance significantly differed between regions with and without contact areas in both the PV antrum (0[0-0.17] vs. 1.7[0-3.9]mm, P=0.0201) and LA body region (0[0-1.5] vs. 1.7[0.7-2.2]mm, P<0.005). The catheter tip-tissue CF did not correlate with the distorted distance (r=0.08, P=0.46), and a multivariate analysis revealed that the absence of anatomical contact areas was strongly associated with significant local distortion, independent of the CF. CONCLUSIONS: High-CF guided mapping yields greater 3D-image anatomical distortion than conventional-FAM methods. That distortion was attenuated by regions with anatomical contact areas, suggesting that regional anatomic distortion is involved in the existence of external structures surrounding the LA.


Asunto(s)
Apéndice Atrial/diagnóstico por imagen , Fibrilación Atrial , Ablación por Catéter , Atrios Cardíacos/diagnóstico por imagen , Anciano , Apéndice Atrial/patología , Fibrilación Atrial/patología , Fibrilación Atrial/fisiopatología , Fibrilación Atrial/cirugía , Catéteres Cardíacos , Ablación por Catéter/efectos adversos , Ablación por Catéter/métodos , Técnicas Electrofisiológicas Cardíacas , Diseño de Equipo , Femenino , Atrios Cardíacos/patología , Humanos , Imagenología Tridimensional/métodos , Japón , Masculino , Persona de Mediana Edad , Evaluación de Procesos y Resultados en Atención de Salud , Venas Pulmonares/cirugía , Tomografía Computarizada por Rayos X/métodos
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