Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 19 de 19
Filtrar
1.
Acad Radiol ; 2023 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-38065749

RESUMEN

RATIONALE AND OBJECTIVES: To investigate the value of contrast-enhanced microflow imaging (CEUS-MFI) in distinguishing benign and malignant breast masses. METHODS: A total of 116 breast masses classified as Breast Imaging Reporting and Data System (BI-RADS) category 3-5 by ultrasound (US) were included. Both contrast-enhanced ultrasound (CEUS) and CEUS-MFI were performed before excision or biopsy, with features and diagnostic efficiency analyzed. The US and CEUS BI-RADS 4A masses were also re-assessed by CEUS-MFI. RESULTS: The features of CEUS-MFI including both interior and peripheral enlarged, twisted vessels (both P < 0.05), penetrating vessels (P = 0.007), and radial/spiculated vessels (P < 0.001) were more frequently detected in malignant masses, while peripheral annular vessels were mostly observed in benign masses (P < 0.001). Interestingly, a significant difference in the orientation of penetrating vessels between benign and malignant masses was found (P < 0.001), with parallel orientation mostly displayed in benign masses, while vertical or multiple-direction orientation mostly displayed in malignant masses. The microvascular architecture of breast masses was categorized into five patterns: avascular, line-like, tree-like, root hair-like, and crab claw-like pattern. Benign masses mainly displayed tree-like pattern (77.1% vs 10.9%, P < 0.05); malignant masses mainly displayed root hair-like (34.8% vs 5.7%, P < 0.05) and crab claw-like patterns (50.0% vs 1.4%, P < 0.05). The diagnostic efficiency of CEUS-MFI was higher relative to CEUS and US. In addition, CEUS-MFI decreased the biopsy rates of US and CEUS BI-RADS 4A masses without missing malignancies. CONCLUSION: CEUS-MFI could be a valuable and promising technique in diagnosis of breast masses, and could provide more diagnostic information for radiologists.

2.
BMC Cancer ; 20(1): 1059, 2020 Nov 03.
Artículo en Inglés | MEDLINE | ID: mdl-33143662

RESUMEN

Zoledronic acid (ZA) is one of the most important and effective class of anti-resorptive drug available among bisphosphonate (BP), which could effectively reduce the risk of skeletal-related events, and lead to a treatment paradigm for patients with skeletal involvement from advanced cancers. However, the exact molecular mechanisms of its anticancer effects have only recently been identified. In this review, we elaborate the detail mechanisms of ZA through inhibiting osteoclasts and cancer cells, which include the inhibition of differentiation of osteoclasts via suppressing receptor activator of nuclear factor κB ligand (RANKL)/receptor activator of nuclear factor κB (RANK) pathway, non-canonical Wnt/Ca2+/calmodulin dependent protein kinase II (CaMKII) pathway, and preventing of macrophage differentiation into osteoclasts, in addition, induction of apoptosis of osteoclasts through inhibiting farnesyl pyrophosphate synthase (FPPS)-mediated mevalonate pathway, and activation of reactive oxygen species (ROS)-induced pathway. Furthermore, ZA also inhibits cancer cells proliferation, viability, motility, invasion and angiogenesis; induces cancer cell apoptosis; reverts chemoresistance and stimulates immune response; and acts in synergy with other anti-cancer drugs. In addition, some new ways for delivering ZA against cancer is introduced. We hope this review will provide more information in support of future studies of ZA in the treatment of cancers and bone cancer metastasis.


Asunto(s)
Neoplasias Óseas/tratamiento farmacológico , Neoplasias Óseas/secundario , Osteoclastos/citología , Ácido Zoledrónico/farmacología , Animales , Neoplasias Óseas/metabolismo , Diferenciación Celular/efectos de los fármacos , Movimiento Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Humanos , Osteoclastos/efectos de los fármacos , Osteoclastos/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Transducción de Señal/efectos de los fármacos , Ácido Zoledrónico/uso terapéutico
3.
Open Life Sci ; 15(1): 237-240, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33817211

RESUMEN

BACKGROUND: Brunner's gland adenoma is a rare benign tumor arising from Brunner's glands. It is mostly small in size, and patients with this tumor are asymptomatic. CASE PRESENTATION: We report the case of a 63-year-old woman with upper gastrointestinal obstruction for almost 10 years, who was pathologically diagnosed with large Brunner's gland adenoma of the duodenum. Postoperatively, no sign of recurrence has been noted until now. CONCLUSION: This study may help clinicians to understand and provide a more accurate diagnosis of Brunner's gland adenoma.

4.
Onco Targets Ther ; 12: 6875-6886, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31692536

RESUMEN

Itraconazole (ITZ) is an anti-fungal drug that has been used in clinical practice for nearly 35 years. Recently, numerous experiments have shown that ITZ possesses anti-cancer properties. The Hedgehog (Hh) pathway plays a pivotal role in fundamental processes, including embryogenesis, structure, morphology and proliferation in various species. This pathway is typically silent in adult cells, and inappropriate activity is linked to various tumor types. The most important mechanism of ITZ in the treatment of cancer is inhibition of the Hh pathway through the inhibition of smoothened receptors (SMO), glioma-associated oncogene homologs (GLI), and their downstream targets. In this review, we discuss the mechanisms of ITZ in the treatment of cancer through inhibition of the Hh pathway, which includes anti-inflammation, prevention of tumor growth, induction of cell cycle arrest, induction of apoptosis and autophagy, prevention of angiogenesis, and drug resistance. We also discuss the clinical use of ITZ in many types of cancers. We hope this review will provide more information to support future studies on ITZ in the treatment of various cancers.

5.
Biomed Pharmacother ; 109: 2054-2061, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30551461

RESUMEN

Hepatocellular carcinoma (HCC) is one of the most common cancers and has a high mortality rate in less developed countries, especially in China. Galangin (GA), one of the most important and naturally active flavonoids, extracted primarily from the root of Alpinia officinarum Hance, has been demonstrated to be effective in the treatment of HCC. It is a substance with defensive actions and a broad range of biological properties, including inhibitory effects on bacteria, fungi, viruses, the control of hypertension and diabetes, and chemoprevention of several cancers. Experiments have shown that GA prevents HCC through multiple anti-cancer mechanisms, anti-genotoxic activity against environmental and dietary carcinogens; anti-proliferative effects through reversal of the Warburg effect in HCC; arrest of the cell cycle in the G0/G1 phase; induction of apoptosis via stimulation of reactive oxygen species (ROS), endoplasmic reticulum (ER) stress, and the mitochondrial-dependent apoptosis pathway; induction of autophagy; and inhibition of angiogenesis, metastasis, and multidrug resistance (MDR). In addition, synergistic effects with other chemotherapy drugs have been demonstrated. Therefore, this review is focused on the anti-HCC mechanisms of GA.


Asunto(s)
Apoptosis/efectos de los fármacos , Carcinoma Hepatocelular/prevención & control , Flavonoides/uso terapéutico , Neoplasias Hepáticas/prevención & control , Animales , Apoptosis/fisiología , Carcinoma Hepatocelular/metabolismo , Carcinoma Hepatocelular/patología , Quimioprevención/métodos , Quimioprevención/tendencias , Flavonoides/farmacología , Humanos , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patología
6.
Arq. bras. cardiol ; 111(1): 75-81, July 2018. tab, graf
Artículo en Inglés | LILACS | ID: biblio-950199

RESUMEN

Abstract Background: Right ventricular function is a crucial factor of the prognosis of systemic lupus erythematosus (SLE). Objectives: To evaluate the right ventricular function in SLE patients with different degrees of pulmonary hypertension (PH) by strain and strain rate imaging. Methods: A total of 102 SLE patients and 30 healthy volunteers were studied between October 2015 and May 2016. Patients were divided into three groups according to pulmonary artery systolic pressure (PASP) estimated by echocardiography: group control (A); PASP ≤ 30 mmHg (group B, n = 37); PASP 30-50 mmHg (mild PH; group C, n = 34); and PASP ≥ 50 mmHg (moderate-to-severe PH; group D, n = 31). Longitudinal peak systolic strain (ε) and strain rate (SR), including systolic strain rate (SRs), early diastolic strain rate (SRe) and late diastolic strain rate (SRa) were measured in the basal, middle and apical segments of the right ventricular free wall in participants by two-dimensional speckle tracking echocardiography (2D-STE) from the apical four-chamber view. A p < 0.05 was set for statistical significance. Results: The parameters of ε, SRs, SRe, and SRa were significantly decreased in groups C and D compared with groups A and B. The ε of each segments was significantly lower in group D than in group C, while there were no differences in SRs, SRe and SRa between groups C and D. Conclusions: Strain and strain rate imaging could early detect the right ventricular dysfunction in SLE patients with PH, and provide important value for clinical therapy and prognosis of these patients. (Arq Bras Cardiol. 2018; [online].ahead print, PP.0-0)


Resumo Fundamento: A função ventricular direita é fator crucial do prognóstico do lúpus eritematoso sistêmico (LES). Objetivos: Avaliar a função ventricular direita em pacientes com LES e diferentes graus de hipertensão pulmonar (HP) por avaliação do strain e do strain rate. Métodos: Um total de 102 pacientes com LES e 30 voluntários sadios foram estudados entre outubro de 2015 e maio de 2016. Os pacientes foram divididos em três grupos de acordo com a pressão sistólica da artéria pulmonar (PSAP) estimada por ecocardiografia: grupo controle (A); PSAP ≤ 30 mmHg (grupo B, n = 37); PSAP 30-50 mmHg (HP leve; grupo C, n = 34); e PSAP ≥ 50 mmHg (HP moderada a grave; grupo D, n = 31). Foram medidos, nos segmentos basal, medial e apical da parede livre do ventrículo direito, o pico sistólico longitudinal (ε) e o strain rate (SR), incluindo o SR sistólico (SRs), o SR diastólico precoce (SRp) e o SR diastólico tardio (SRt) pela técnica de ecocardiografia bidimensional com rastreamento de "pontos" (two-dimensional speckle tracking echocardiography, 2D-STE) pela visualização apical de quatro câmaras. Um p < 0,05 foi adotado como estatisticamente significativo. Resultados: Os parâmetros ε, SRs, SRp e SRt foram significativamente menores nos grupos C e D em comparação aos grupos A e B. O ε de cada segmento foi significativamente menor no grupo D que no grupo C, ao passo que não houve diferença no SRs, SRp ou SRt entre os grupos C e D. Conclusões: O strain e o SR obtidos por 2D-STE puderam detectar precocemente disfunção ventricular direita em pacientes com LES e HP, contribuindo para o tratamento clínico e prognóstico desses pacientes. (Arq Bras Cardiol. 2018; [online].ahead print, PP.0-0)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Disfunción Ventricular Derecha/fisiopatología , Lupus Eritematoso Sistémico/fisiopatología , Pronóstico , Índice de Severidad de la Enfermedad , Ecocardiografía , Estudios de Casos y Controles , Disfunción Ventricular Derecha/etiología , Disfunción Ventricular Derecha/diagnóstico por imagen , Diagnóstico Precoz
7.
Arq Bras Cardiol ; 111(1): 75-81, 2018 Jul.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-29898016

RESUMEN

BACKGROUND: Right ventricular function is a crucial factor of the prognosis of systemic lupus erythematosus (SLE). OBJECTIVES: To evaluate the right ventricular function in SLE patients with different degrees of pulmonary hypertension (PH) by strain and strain rate imaging. METHODS: A total of 102 SLE patients and 30 healthy volunteers were studied between October 2015 and May 2016. Patients were divided into three groups according to pulmonary artery systolic pressure (PASP) estimated by echocardiography: group control (A); PASP ≤ 30 mmHg (group B, n = 37); PASP 30-50 mmHg (mild PH; group C, n = 34); and PASP ≥ 50 mmHg (moderate-to-severe PH; group D, n = 31). Longitudinal peak systolic strain (ε) and strain rate (SR), including systolic strain rate (SRs), early diastolic strain rate (SRe) and late diastolic strain rate (SRa) were measured in the basal, middle and apical segments of the right ventricular free wall in participants by two-dimensional speckle tracking echocardiography (2D-STE) from the apical four-chamber view. A p < 0.05 was set for statistical significance. RESULTS: The parameters of ε, SRs, SRe, and SRa were significantly decreased in groups C and D compared with groups A and B. The ε of each segments was significantly lower in group D than in group C, while there were no differences in SRs, SRe and SRa between groups C and D. CONCLUSIONS: Strain and strain rate imaging could early detect the right ventricular dysfunction in SLE patients with PH, and provide important value for clinical therapy and prognosis of these patients. (Arq Bras Cardiol. 2018; [online].ahead print, PP.0-0).


Asunto(s)
Lupus Eritematoso Sistémico/fisiopatología , Disfunción Ventricular Derecha/fisiopatología , Adulto , Estudios de Casos y Controles , Diagnóstico Precoz , Ecocardiografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Reproducibilidad de los Resultados , Índice de Severidad de la Enfermedad , Disfunción Ventricular Derecha/diagnóstico por imagen , Disfunción Ventricular Derecha/etiología
8.
Medicine (Baltimore) ; 97(8): e9986, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29465602

RESUMEN

RATIONALE: Pleomorphic liposarcoma (PLS), is a rare subtype of liposarcoma, and is considered to be of the highest malignancy grade. PATIENT CONCERNS: We aimed to analyze the clinical features, diagnosis, treatment, and recurrence of the 6 cases of PLS. DIAGNOSES: Six cases with confirmed pathological PLS presented at out hospital from January 2003 to January 2017. The postoperative pathology of 5 cases confirmed PLS, and the other was confirmed as PLS with well-differentiated liposarcoma. INTERVENTIONS: All 6 patients underwent complete tumor resection at the time of the first definite diagnosis, and one of them had underwent 3 cycles of chemotherapy treatment. OUTCOMES: There were 4 cases with local recurrence and surgery was repeated after the first radical excision. One case was not recurrent after 27 months post-operation, and the other was lost. The shortest recurrence time of all of these cases was 4 months, and the longest was 29 months after the first radical surgery. LESSONS: PLS is a rare and high-grade malignancy with high recurrence, poor prognosis, and its treatment is still highly controversial. More studies are required to determine the appropriate treatment and therapeutic strategies to improve the survival rate of patients with PLS, as the disease is associated with frequent relapse.


Asunto(s)
Liposarcoma/patología , Neoplasias Pélvicas/patología , Neoplasias Retroperitoneales/patología , Neoplasias Cutáneas/patología , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Liposarcoma/cirugía , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/patología , Neoplasias Pélvicas/cirugía , Neoplasias Retroperitoneales/cirugía , Neoplasias Cutáneas/cirugía , Resultado del Tratamiento
9.
J Ultrasound Med ; 37(10): 2345-2351, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29480580

RESUMEN

OBJECTIVES: To assess right atrium (RA) function of patients with systemic lupus erythematosus (SLE) and pulmonary artery hypertension (PAH) by 2-dimensional speckle-tracking echocardiography. METHODS: Thirty matched healthy adults were selected as group A. Then, 102 patients with SLE were divided into 3 groups according to the severity of PAH. Group B included 37 patients without PAH (pulmonary artery [PA] systolic pressure ≤ 30 mm Hg); group C included 34 patients with PAH (PA systolic pressure of 30-50 mm Hg); and group D included 31 patients with PAH (PA systolic pressure ≥ 50 mm Hg). Parameters evaluated included RA maximum volume, minimum volume, preatrial contraction volume, passive ejection fraction (EF), and active EF. The global peak longitudinal systolic strain rate and early and late diastolic strain rates of the RA were obtained by 2-dimensional speckle-tracking echocardiography. RESULTS: No significant differences were found in all parameters between groups B and A (P > .05). The RA maximum volume, minimum volume, preatrial contraction volume, active EF, and late diastolic strain rate in groups C and D were significantly increased compared with those in groups A and B, and the parameters in group D were significantly higher than those in group C (P < .05). Although the RA passive EF, early diastolic strain rate, and systolic strain rate in groups C and D were significantly decreased compared with those in groups A and B, those in group D were significantly lower than those in group C (P < .05). CONCLUSIONS: Two-dimensional speckle-tracking echocardiography could effectively assess RA function in patients with SLE who have different severities of PAH.


Asunto(s)
Función Atrial , Ecocardiografía/métodos , Hipertensión Pulmonar/complicaciones , Lupus Eritematoso Sistémico/complicaciones , Adulto , Presión Sanguínea , Femenino , Atrios Cardíacos/diagnóstico por imagen , Atrios Cardíacos/fisiopatología , Humanos , Hipertensión Pulmonar/fisiopatología , Lupus Eritematoso Sistémico/fisiopatología , Masculino , Persona de Mediana Edad , Arteria Pulmonar/fisiopatología , Sístole , Adulto Joven
10.
J Med Ultrason (2001) ; 45(2): 301-306, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-28875315

RESUMEN

PURPOSE: This study aims to assess carotid elasticity early in normal left ventricular function in post-radiotherapy patients with nasopharyngeal carcinoma (NPC) by wave intensity. METHODS: Sixty-seven post-radiotherapy patients all with normal left ventricular function were classified into group NPC1 and group NPC2 based on their carotid intima-media thickness. Thirty age- and sex-matched NPC patients without any history of irradiation and chemotherapy were included as a control group. Carotid parameters, including stiffness constant (ß), pressure-strain elastic modulus (Ep), arterial compliance (AC), stiffness constant pulse wave velocity (PWVß), and wave intensity pulse wave velocity (PWVWI) were measured. RESULTS: There were no significant differences in conventional echocardiographic variables among the three groups. In comparison with the control group, ß, Ep, PWVß, and PWVWI were significantly increased, while AC was significantly decreased in the NPC1 and NPC2 groups, and there were differences between the NPC1 group and NPC2 group (all P < 0.05). CONCLUSION: This study suggested that carotid artery stiffness increased with reduced carotid compliance in post-RT with NPC.


Asunto(s)
Carcinoma/radioterapia , Enfermedades de las Arterias Carótidas/diagnóstico por imagen , Enfermedades de las Arterias Carótidas/fisiopatología , Diagnóstico por Imagen de Elasticidad , Neoplasias Nasofaríngeas/radioterapia , Radioterapia/efectos adversos , Rigidez Vascular , Adulto , Anciano , Enfermedades de las Arterias Carótidas/etiología , Grosor Intima-Media Carotídeo , Elasticidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Carcinoma Nasofaríngeo , Análisis de la Onda del Pulso , Rigidez Vascular/fisiología , Función Ventricular Izquierda , Adulto Joven
11.
Echocardiography ; 34(11): 1601-1609, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28895191

RESUMEN

OBJECTIVE: Epirubicin (Epi) is a potent and effective drug for many malignant cancers with serious cardiotoxicity. Therefore, layer-specific two-dimensional speckle tracking echocardiography (2D-STE) was used to evaluate the longitudinal and circumferential systolic function of the left ventricular for the early detection of cardiotoxicity in this retrospective work. METHODS: Overall, 130 female patients with postoperative breast cancer who did not receive radiotherapy were classified into three groups: Group A (control group, n = 40) without any chemotherapy; Group B (n = 44) administered Epi at 180 ~ 240 mg/m2 ; and Group C (n = 46) administered Epi at ≥360 mg/m2 . Peak and global systolic longitudinal strains (GLS) in the total and endocardium, mid-myocardium, and epicardium were measured and calculated from apical four-chamber, apical two-chamber, and left ventricular long-axis views, respectively. Peak and global circumferential strains (GCS) in the total and endocardium, mid-myocardium, and epicardium were measured and calculated from mitral annulus, papillary muscle, and apical levels of the short-axis view, respectively. RESULTS: The total GLS and GLS of the endocardium in every view were significantly reduced in group C compared with both groups A and B (P < .05), but there was no significant difference between groups A and B (P > .05). The GLS of the epicardium and mid-myocardium in groups B and C were not significantly reduced (P > .05). There were no significant differences in the total GCS and layer-specific GCS of endocardium, mid-myocardium, and epicardium among the three groups (P > .05). CONCLUSIONS: Left ventricular longitudinal systolic dysfunction was detected. Moreover, an impaired endocardium was also detected in an early assessment by layer-specific 2DSTE.


Asunto(s)
Neoplasias de la Mama/terapia , Cardiotoxicidad/fisiopatología , Ecocardiografía/métodos , Epirrubicina/efectos adversos , Complicaciones Posoperatorias/diagnóstico por imagen , Disfunción Ventricular Izquierda/diagnóstico por imagen , Adulto , Anciano , Antibióticos Antineoplásicos/efectos adversos , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/cirugía , Cardiotoxicidad/etiología , Ecocardiografía/efectos de los fármacos , Femenino , Ventrículos Cardíacos/diagnóstico por imagen , Ventrículos Cardíacos/efectos de los fármacos , Humanos , Mastectomía , Persona de Mediana Edad , Complicaciones Posoperatorias/inducido químicamente , Reproducibilidad de los Resultados , Estudios Retrospectivos
12.
Anatol J Cardiol ; 18(3): 194-199, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28639946

RESUMEN

OBJECTIVE: The present study aimed to evaluate left ventricular (LV) systolic function in patients with iron deficiency anemia (IDA) by 3 dimensional speckle-tracking echocardiography (3DSTE). METHODS: Participants were grouped by hemoglobin (Hb) levels in order to study the effect of anemia on cardiac function. Group A included 40 healthy volunteers. Eighty-three patients who were diagnosed with IDA were divided into 2 groups according to the Hb level. Group B (Hb 9 g/dL) included 44 patients, while group C (Hb 6-9 g/dL) included 39 patients. Left ventricular end-diastolic volume (LVEDV), left ventricular endsystolic volume (LVESV), left ventricular mass index (LVMI), and left ventricular ejection fraction (LVEF) were calculated by real-time 3-dimensional echocardiography (RT3D). Left ventricular global longitudinal strain (GLS), global area strain (GAS), global radial strain (GRS), and global circumferential strain (GCS) were obtained by 3DSTE. RESULTS: LVMI, LVEDV and LVESV of group C increased and GCS, GRS, GLS, and GAS of group C decreased compared with those of groups A and B (all p<0.05). GAS and GLS decreased significantly compared with other parameters (both p<0.01). CONCLUSION: LV remodeling and LV systolic dysfunction occurred in patients when the hemoglobin level was in the range of 6-9 g/dL. 3DSTE can evaluate LV systolic function in patients with IDA, and GAS and GLS are more sensitive than other parameters.


Asunto(s)
Anemia Ferropénica/complicaciones , Disfunción Ventricular Izquierda/diagnóstico por imagen , Adulto , Anciano , Anemia Ferropénica/sangre , Estudios de Casos y Controles , Ecocardiografía Tridimensional , Femenino , Hemoglobinas/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Sístole , Disfunción Ventricular Izquierda/complicaciones , Adulto Joven
13.
Acta Cardiol ; 72(1): 28-35, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28597735

RESUMEN

Background Chronic excessive alcohol intake has been reported as a possible cause of dilated cardiomyopathy. Two-dimensional speckle-tracking echocardiography (2D-STE) is a novel method for the angle-independent and objective quantification of myocardial deformation. This study sought to assess left atrial function changes among alcoholics related to the duration of heavy drinking by 2D-STE. Methods We classified 92 asymptomatic alcoholics into mild, moderate and severe groups. Thirty age-matched controls were also recruited. We measured left atrial (LA) phasic volumes (max, min and pre-atrial contraction volume) using Simpson's method in apical four-chamber view. Passive emptying (LAPEF) and active emptying (LAAEF) indices were calculated. Global longitudinal strain rate (SRs) during left ventricular (LV) ejection, early diastolic strain rate (SRe) during LV early diastole and peak negative strain rate (SRa) after the P-wave were also obtained by averaging all atrial segments. Results The alcoholics had larger LA volumes (max, min and pre-atrial contraction volume) since moderate stage (P < 0.01). LAPEF, SRs SRe, and E/A ratio showed progressive decrease according to the grades of alcoholism. The differences between the groups were significant, beginning from the moderate group (P < 0.01). During LAAEF, SRa values increased with the disease severity up to moderate alcoholics and then deteriorated significantly in severe alcoholics (P < 0.01). Conclusions These data suggest that 2D-STE may be considered a promising tool for the early detection of impairment of LA function in alcoholics.


Asunto(s)
Alcohólicos , Alcoholismo/fisiopatología , Función del Atrio Izquierdo/fisiología , Cardiomiopatía Dilatada/etiología , Ecocardiografía/métodos , Atrios Cardíacos/diagnóstico por imagen , Volumen Sistólico/fisiología , Alcoholismo/complicaciones , Alcoholismo/diagnóstico , Enfermedades Asintomáticas , Cardiomiopatía Dilatada/diagnóstico , Cardiomiopatía Dilatada/fisiopatología , Enfermedad Crónica , Femenino , Atrios Cardíacos/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Factores de Tiempo
14.
Medicine (Baltimore) ; 96(5): e6033, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28151910

RESUMEN

Chronic alcohol consumption may lead to progressive cardiac dysfunction. The aim of this study was to evaluate the feasibility of using real-time 3-dimensional echocardiography (3DE) on assessing left ventricular (LV) function in chronic alcoholics.We classified 92 male alcoholics into mild, moderate, and severe groups; 30 age-matched controls were also recruited. LV end-diastolic volume (LVEDV), LV end-systolic volume (LVESV), LV ejection fraction (LVEF), LV mass (LVM), LV mass index (LVMI), and systolic dyssynchrony index (SDI) were measured by 3DE and 2-dimensional echocardiography (2DE).Compared to the control group, LV volume and mass were higher in the moderate and severe alcoholic groups (P < 0.05). The severe alcoholic (symptomatic) group demonstrated decreased LVEF and increased SDI (detected by 3DE) (P < 0.05).Real-time 3DE can detect the increases of LV volumes and mass in asymptomatic alcoholics, and the changes of LVEF and systolic synchrony index in symptomatic alcoholics.


Asunto(s)
Alcoholismo/complicaciones , Ecocardiografía Tridimensional/métodos , Disfunción Ventricular Izquierda/diagnóstico por imagen , Adulto , Anciano , Alcoholismo/fisiopatología , Estudios de Casos y Controles , Ecocardiografía/métodos , Estudios de Factibilidad , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Volumen Sistólico/fisiología , Sístole/fisiología , Función Ventricular Izquierda/fisiología
15.
Open Med (Wars) ; 12: 485-488, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29423449

RESUMEN

BACKGROUND: Liposarcoma, which develops in adipose tissue, is one of the most common soft tissue sarcomas. It appears mostly in the lower limbs, particularly in the thigh and limb girdles, followed by the upper extremities, thoracoabdominal wall, and the internal trunk and retroperitoneum. Pleomorphic liposarcoma (PLS), a rare subtype of liposarcoma is considered a highgrade malignancy. CASE PRESENTATION: We present a case of primary PLS in the left fallopian tube of a 47-year-old female. Ten months previously, she was diagnosed with PLS of the left fallopian tube in another hospital and had a wide excision of left fallopian tube mass, including total abdominal hysterectomy and bilateral salpingo-oophorectomy for left fallopian tube PLS. Presently, she has developed a recurrence and metastasis of PLS in the pelvic and abdominal cavities. CONCLUSION: This may be the first case of primary fallopian tube PLS, wherein the prognosis of this patient was poor due to the high-grade malignancy of PLS.

16.
Echocardiography ; 34(2): 226-231, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28032358

RESUMEN

OBJECTIVE: There is evidence suggesting that different volumes of chronic alcohol consumption have different effects on the endothelium. Therefore, using high-frequency ultrasonography, we evaluate the effects of the different volume and duration of alcohol intake on brachial artery endothelial function in chronic drinkers. METHODS: Ninety-two male chronic episodic alcoholics were grouped by alcohol intake amount and duration: mild (group B, n=30); ≤90 mg ethanol daily, 3-5 days/wk for 5-8 years; moderate (group C, n=30); 90-150 mg ethanol daily, 3-5 days/wk for 9-20 years; and severe (group D, n=32); ≥150 mg ethanol daily, 6-7 days/wk for more than 10 years. Thirty male nondrinkers were recruited as the control group A. High-frequency ultrasonography was used to measure brachial artery diameter during rest, during reactive hyperemia and following the administration of nitroglycerin. Endothelial-dependent brachial artery flow-mediated dilatation (FMD) and endothelial-independent brachial artery nitrate-mediated dilatation (NMD) were calculated. RESULTS: Flow-mediated dilatation values for group C and D were significantly lower than those for group A and B (VC =7.63±0.22, VD =5.85±0.23 vs VA =13.35±0.35, VB =12.81±0.36, P<.01). The FMD of group D was significantly lower than that of group C (P<.01). Meanwhile, the NMD of group D was significantly lower than that of the other groups (VD =17.33±6.21 vs VA =25.35±7.42, VB =24.52±8.30, VC =23.35±7.27, P<.01). CONCLUSIONS: Chronic moderate-to-heavy alcohol consumption caused endothelial dysfunction, even damaging vascular smooth muscle cells in cases of heavy alcohol consumption, while abstinence and chronic mild alcoholics caused no effect on endothelial function.


Asunto(s)
Alcoholismo/fisiopatología , Arteria Braquial/diagnóstico por imagen , Arteria Braquial/fisiopatología , Endotelio Vascular/diagnóstico por imagen , Endotelio Vascular/fisiopatología , Ultrasonografía/métodos , Adulto , Anciano , Enfermedad Crónica , Dilatación Patológica/diagnóstico por imagen , Dilatación Patológica/fisiopatología , Humanos , Masculino , Persona de Mediana Edad
17.
Biomed Pharmacother ; 84: 1321-1330, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27810789

RESUMEN

Breast cancer is the second most common type of cancer in the world, and is by far the most prevalent form of cancer in women. However, the efficacy of current treatments for breast cancer is limited. In addition to the high risk of recurrence, some of these have side effects that significantly reduce the quality of life. Therefore, new avenues of treatment for breast cancer are needed. Betulinic acid (BA), a pipeline anticancer drug, exerts anti-proliferative effects on breast cancer cells is mainly through inhibition of cyclin and topoisomerase expression, leading to cell cycle arrest. It induces apoptosis through mitochondrial pathway and anti-angiogenesis effect by inhibiting the expression of transcription factor nuclear factor kappa B (NF-κB), specificity protein (Sp) transcription factors, and vascular endothelial growth factor (VEGF) signaling. In addition, it exerts anti-metastatic effect by inhibiting the expression of matrix metalloproteases. The specific targets of BA in breast cancer are reported to be the estrogen receptor and various multidrug resistance proteins. Synergistically interactions of BA with other chemotherapeutics are also described in the literature. In this review, we describe the detailed published mechanisms of action of BA, a pentacyclic triterpene with a lupine skeleton, on multiple molecular targets to treat breast cancer. We hope that this review will provide basic information in support of future studies of effects of BA on breast cancer cells.


Asunto(s)
Neoplasias de la Mama/tratamiento farmacológico , Terapia Molecular Dirigida , Triterpenos/uso terapéutico , Animales , Apoptosis/efectos de los fármacos , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/patología , Sinergismo Farmacológico , Femenino , Humanos , Triterpenos Pentacíclicos , Transducción de Señal/efectos de los fármacos , Triterpenos/farmacología , Ácido Betulínico
18.
Cardiovasc Ultrasound ; 14(1): 34, 2016 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-27550185

RESUMEN

BACKGROUND: Iron-deficiency anemia (IDA) is a global health problem and a common medical condition that can be seen in everyday clinical practice. And two-dimensional speckle tracking echocardiography (2D-STE) has been reported very useful in evaluating left atrial (LA) function, as well as left ventricular (LV) function. The aim of our study is to evaluate the LA function in patients with IDA by 2D-STE. METHODS: 65 patients with IDA were selected. This group of patients was then divided into two groups according to the degree of hemoglobin: group B (Hb > 90 g/L) and group C (Hb60 ~ 90 g/L). Another 30 healthy people were also selected as control group A. Conventional echocardiography parameters, such as left atrial diameter (LAD), peak E and A of mitralis (E, A), E/A, end-diastolic thickness of ventricular septum (IVST d), end-diastolic thickness of LV posterior wall (PWTd) and left ventricular end-diastolic dimension (LVDd) were obtained from these three groups. Left atrial minimum volume (LAVmin), left atrial pre-atrial contraction volume (LAVp) and left atrial maximum volume (LAVmax) were measured by Simpson's rule, whereas left atrial active ejection fraction (LAAEF) and left atrial passive ejection fraction (LAPEF) were obtained from calculation. Two-dimensional images were acquired from apical four-chamber view and two-chamber view to store images for offline analysis. The global peak atrial longitudinal strain and strain rate of systolic LV (GLSs, GLSRs) as well as early and late diastolic LV strain rate (GLSRe, GLSRa) curves of LA were acquired in each LA segment from basal segment to top segment of LA by 2D-STE. RESULTS: Compared with group A, there were no differences between group B and group A (all P > 0.05). The LAAEF and GLSRa were significantly higher in group C compared with those of group A and group B (all P < 0.01). The LAPEF, GLSs, GLSRs and GLSRe were significantly lower in group C compared with those of group A and group B (all P < 0.01). CONCLUSIONS: 2D-STE could evaluate the LA function in patients with IDA.


Asunto(s)
Anemia Ferropénica/fisiopatología , Función del Atrio Izquierdo/fisiología , Ecocardiografía/métodos , Atrios Cardíacos/diagnóstico por imagen , Adulto , Anciano , Anemia Ferropénica/diagnóstico , Femenino , Estudios de Seguimiento , Atrios Cardíacos/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Estudios Retrospectivos , Adulto Joven
19.
Anticancer Agents Med Chem ; 16(7): 802-9, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26555611

RESUMEN

Gastric cancer remains high prevalence and fatality rates in China even though its morbidity has been decreased drastically. Allicin, which is from an assistance food-garlic (Allium Sativum L), was found to be effective in gastric cancer treatment. It is a defensive substance with a board biological properties: inhibition of bacteria, fungus, virus, controlled hypertension, diabetes, and chemoprevention of several cancers, etc. Experiments have shown that allicin can be chemopreventive to gastric cancer by inhibiting the growth of cancer cells, arresting cell cycle at G2/M phase, endoplasmic reticulum (ER) stress, and mitochondria-mediated apoptosis, which includes the caspase-dependent/-independent pathways and death receptor pathway. Those mechanisms probably involve in modulating enzymatic activity, restraining DNA formation, scavenging free radicals, and affecting cell proliferation and even tumor growth. Therefore, this review is focus on the mechanism of allicin in gastric cancer.


Asunto(s)
Quimioprevención , Neoplasias Gástricas/prevención & control , Ácidos Sulfínicos/administración & dosificación , Apoptosis/efectos de los fármacos , División Celular/efectos de los fármacos , Disulfuros , Humanos , Neoplasias Gástricas/patología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA