Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 147
Filtrar
Más filtros

País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Eur Arch Psychiatry Clin Neurosci ; 274(1): 109-116, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37086305

RESUMEN

Borderline Personality Disorder (BPD) is a severe mental disorder, characterized by deficits in emotion regulation, interpersonal dysfunctions, dissociation and impulsivity. Brain abnormalities have been generally explored; however, the specific contribution of different limbic structures to BPD symptomatology is not described. The aim of this study is to cover this gap, exploring functional and structural alterations of amygdala and insula and to highlight their contribution to neuropsychiatric symptoms. Twenty-eight BPD patients (23.7 ± 3.42 years; 6 M/22F) and twenty-eight matched healthy controls underwent a brain MR protocol (1.5 T, including a 3D T1-weighted sequence and resting-state fMRI) and a complete neuropsychiatric assessment. Volumetry, cortical thickness and functional connectivity of amygdala and insula were evaluated, along with correlations with the neuropsychiatric scales. BPD patients showed a lower cortical thickness of the left insula (p = 0.027) that negatively correlated with the Anger Rumination Scale (p = 0.019; r = - 0.450). A focused analysis on female patients showed a significant reduction of right amygdala volumes in BPD (p = 0.037), that correlate with Difficulties in Emotion Regulation Scale (p = 0.031; r = - 0.415), Beck Depression Inventory (p = 0.009; r = - 0.50) and Ruminative Response Scale (p = 0.045; r = - 0.389). Reduced functional connectivity was found in BPD between amygdala and frontal pole, precuneus and temporal pole. This functional connectivity alterations correlated with Anger Rumination Scale (p = .009; r = - 0.491) and Barratt Impulsiveness Scale (p = 0.020; r = - 0.447). Amygdala and insula are altered in BPD patients, and these two limbic structures are implicated in specific neuropsychiatric symptoms, such as difficulty in emotion regulation, depression, anger and depressive rumination.


Asunto(s)
Trastorno de Personalidad Limítrofe , Humanos , Femenino , Amígdala del Cerebelo/diagnóstico por imagen , Ira , Encéfalo , Imagen por Resonancia Magnética/métodos , Conducta Impulsiva , Emociones
2.
Int J Colorectal Dis ; 37(2): 411-419, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-35013822

RESUMEN

PURPOSE: Over 50% of patients suffering from Crohn's disease (CD) require surgery in their lifetime. Predictors/risk factors of post-operative morbidity and mortality in CD are poorly investigated. We aimed to assess the risk factors of post-operative morbidity/mortality in CD. METHODS: We performed a retrospective cohort study in which all CD patients operated and followed up at our tertiary Inflammatory Bowel Disease Centre from 2014 to 2019 were enrolled. For each patient, we evaluated patient-dependent, disease-dependent and surgery-dependent variables. All patients underwent small bowel and/or colic resections. RESULTS: Of the 165 operated patients, forty-two (25.5%) developed post-operative complications (major complication rate = 9.8%) including wound infection (12.1%), respiratory complications (4.8%), prolonged ileum (4.2%), anastomotic leak (3.6%), urinary infections (3%), abdominal abscess (2.4%), anastomotic bleeding (3.6%), abdominal bleeding (1.2%) and obstruction (0.6%). Two subjects (1.2%) required re-operation within 30 days, and one died. A surgery duration < 141 min was predictive of a better post-operative outcome (sensitivity 80.9%, specificity 43.1%, PPV 32.7%, NPV 86.9%). The multivariable analysis showed stricturing/fistulizing behaviour (OR 3.7, 95% CI 1.6-6.4, p = 0.02), need for total parenteral nutrition (OR 4.1, 95% CI 2.4-9.2, p = 0.01), pre-operative bowel cleansing (OR 0.6, 95% CI 0.41-0.83, p = 0.01) and surgery duration < 141 min (OR 0.2, 95% CI 0.08-0.7, p = 0.03) as the only risk factors associated with post-operative morbidities. CONCLUSIONS: About 25% of CD patients develop post-operative complications. Several patient-related, disease-related and surgery-related factors should be considered risk factors for post-operative morbidity. The recognition of these factors, as well as a multidisciplinary approach to the pre-operative management of CD, could reduce post-operative complications.


Asunto(s)
Enfermedad de Crohn , Fuga Anastomótica/etiología , Enfermedad de Crohn/cirugía , Humanos , Íleon , Morbilidad , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos
3.
Pharm Res ; 37(2): 24, 2020 Jan 06.
Artículo en Inglés | MEDLINE | ID: mdl-31909447

RESUMEN

PURPOSE: Autosomal-dominant polycystic kidney disease (ADPKD) is an orphan disease with few current treatment options. The vasopressin V2 receptor antagonist tolvaptan is approved in multiple countries for the treatment of ADPKD, however its use is associated with clinically significant drug-induced liver injury. METHODS: In prior studies, the potential for hepatotoxicity of tolvaptan was correctly predicted using DILIsym®, a quantitative systems toxicology (QST) mathematical model of drug-induced liver injury. In the current study, we evaluated lixivaptan, another proposed ADPKD treatment and vasopressin V2 receptor antagonist, using DILIsym®. Simulations were conducted that assessed the potential for lixivaptan and its three main metabolites to cause hepatotoxicity due to three injury mechanisms: bile acid accumulation, mitochondrial dysfunction, and oxidative stress generation. Results of these simulations were compared to previously published DILIsym results for tolvaptan. RESULTS: No ALT elevations were predicted to occur at the proposed clinical dose for lixivaptan, in contrast to previously published simulation results for tolvaptan. As such, lixivaptan was predicted to have a markedly lower risk of hepatotoxicity compared to tolvaptan with respect to the hepatotoxicity mechanisms represented in DILIsym. CONCLUSIONS: These results demonstrate the potential for using QST methods to differentiate drugs in the same class for their potential to cause hepatotoxicity.


Asunto(s)
Benzamidas/efectos adversos , Enfermedad Hepática Inducida por Sustancias y Drogas/etiología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/etiología , Riñón Poliquístico Autosómico Dominante/tratamiento farmacológico , Pirroles/efectos adversos , Tolvaptán/efectos adversos , Benzamidas/farmacología , Humanos , Modelos Teóricos , Pirroles/farmacología , Tolvaptán/farmacología
4.
Eur J Vasc Endovasc Surg ; 52(1): 119-23, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27134053

RESUMEN

OBJECTIVE/BACKGROUND: To analyse long term outcome, including functional status and prognostic factors, in patients who have undergone arterial repair of civilian upper limb injury. Retrospective data analysis of prospectively collected data was performed. METHODS: This was a retrospective data analysis of prospectively collected data. Records of all patients who had undergone repair of traumatic arterial lesions in the upper limb between 1989 and 2010 were reviewed, and clinical follow up was performed. End points were: long term patency, measured by color Doppler ultrasound; vascular re-intervention; limb salvage rate; and long term functional status using the Disabilities of Arm, Shoulder, and Hand (DASH) questionnaire. The DASH questionnaire is an instrument used to identify a patient's disabilities, in which everyday activities are assessed by 30 questions. The DASH answers are summarized and, using a conversion formula, lead to a score between 0 (full recovery) and 100 (severe disability). The DASH questionnaire was sent to all German-speaking individuals for data supplementation after completion of a clinical follow up study. RESULTS: A total of 117 arterial repairs were performed in 108 patients (87 men, median age 35.7 years). Blunt trauma was the predominant cause of injury (n = 96; 82%). Accompanying nerve lesions (n = 39; 36%) and/or orthopedic injuries (n = 65; 60%) were present in 84 patients (78%). After a median follow up time of 5.3 years (range 0.5-19.7 years), 65 patients (60%) were re-investigated: long-term patency was 97%. The DASH questionnaire was answered by 57 patients (53%). Functional impairment was frequently seen, and determined by neurological injury (including neurological lesions, median DASH score was 40.3 [range 3.5-69.8] vs. 0.8 [range 0-5.8] without; p < .001) and ischemia at time of injury (median DASH score with ischemia 4.2 [range 0-16.9] vs. 0.0 [0-1.7] without; p < .04). CONCLUSION: Favorable long term patency rates after arterial repair in upper extremity injuries can be achieved. Long term functional impairment is a significant problem and determined by associated neurological injury, as well as ischemia at time of injury.


Asunto(s)
Traumatismos del Brazo/cirugía , Procedimientos de Cirugía Plástica/métodos , Actividades Cotidianas , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Brazo/irrigación sanguínea , Traumatismos del Brazo/fisiopatología , Arterias/cirugía , Niño , Preescolar , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Encuestas y Cuestionarios , Resultado del Tratamiento , Grado de Desobstrucción Vascular , Procedimientos Quirúrgicos Vasculares , Adulto Joven
6.
Clin Exp Immunol ; 175(3): 476-84, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24168016

RESUMEN

Literature reports describe kiwi fruit as a food with significant effects on human health, including anti-oxidant and anti-inflammatory activity. Fresh fruit or raw kiwi fruit extracts have been used so far to investigate these effects, but the molecule(s) responsible for these health-promoting activities have not yet been identified. Kissper is a kiwi fruit peptide displaying pore-forming activity in synthetic lipid bilayers, the composition of which is similar to that found in intestinal cells. The objective of this study was to investigate the kissper influence on intestinal inflammation using cultured cells and ex-vivo tissues from healthy subjects and Crohn's disease (CD) patients. The anti-oxidant and anti-inflammatory properties of kissper were tested on Caco-2 cells and on the colonic mucosa from 23 patients with CD, by challenging with the lipopolysaccharide from Escherichia coli (EC-LPS) and monitoring the appropriate markers by Western blot and immunofluorescence. EC-LPS challenge determined an increase in the intracellular concentration of calcium and reactive oxygen species (ROS). The peptide kissper was highly effective in preventing the increase of LPS-induced ROS levels in both the Caco-2 cells and CD colonic mucosa. Moreover, it controls the calcium increase, p65-nuclear factor (NF)-kB induction and transglutaminase 2 (TG2) activation inflammatory response in Caco-2 cells and CD colonic mucosa. Kissper efficiently counteracts the oxidative stress and inflammatory response in valuable model systems consisting of intestinal cells and CD colonic mucosa. This study reports the first evidence supporting a possible correlation between some beneficial effects of kiwi fruit and a specific protein molecule rather than generic nutrients.


Asunto(s)
Actinidia/química , Antiinflamatorios/farmacología , Antioxidantes/farmacología , Frutas/química , Mucosa Intestinal/efectos de los fármacos , Péptidos/farmacología , Adolescente , Adulto , Antiinflamatorios/aislamiento & purificación , Antioxidantes/aislamiento & purificación , Células CACO-2 , Activación Enzimática/efectos de los fármacos , Proteínas de Unión al GTP , Humanos , Mucosa Intestinal/metabolismo , FN-kappa B/metabolismo , Estrés Oxidativo/efectos de los fármacos , Péptidos/aislamiento & purificación , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación , Extractos Vegetales/farmacología , Proteína Glutamina Gamma Glutamiltransferasa 2 , Especies Reactivas de Oxígeno/metabolismo , Transglutaminasas/metabolismo , Adulto Joven
7.
Support Care Cancer ; 22(1): 121-8, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24005884

RESUMEN

PURPOSE: Indwelling central venous catheters (CVCs) have been increasingly used to enable delivery of intravenous chemotherapy. We aimed to compare the safety and cost of two commonly used CVCs, peripherally inserted central venous catheter (PICCs) and ports, in the delivery of chemotherapy in patients with non-haematological malignancies. METHODS: Seventy patients were randomly assigned to receive either a PICC or a port. The primary endpoint was occurrence of major complications, which required removal of the CVC and secondary endpoints included occurrence of any complications. RESULTS: Port devices were associated with fewer complications compared with PICC lines (hazard ratio of 0.25, CI, 0.09-0.86, P = 0.038). Major complication rate was lower in the port arm compared to the PICC arm (0.047 versus 0.193 major complications/100 catheter days, P = 0.034) with 6 versus 20 % of patients experiencing major complications, respectively. Thrombosis, the most common complication, was significantly higher in the PICC arm compared to the port arm (25 versus 0 %, P = 0.013). Quality of life and cost estimates did not differ significantly between the two arms. CONCLUSIONS: Port devices are associated with a lower risk of complications, with no difference in cost, compared to PICC lines in patients with non-haematological malignancies receiving intravenous chemotherapy.


Asunto(s)
Cateterismo Venoso Central/efectos adversos , Cateterismo Venoso Central/economía , Cateterismo Periférico/efectos adversos , Cateterismo Periférico/economía , Neoplasias/tratamiento farmacológico , Anciano , Antineoplásicos/administración & dosificación , Australia , Cateterismo Venoso Central/instrumentación , Cateterismo Periférico/instrumentación , Catéteres Venosos Centrales/efectos adversos , Catéteres Venosos Centrales/economía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/sangre , Neoplasias/economía , Calidad de Vida , Tasa de Supervivencia , Trombosis/economía , Trombosis/etiología , Dispositivos de Acceso Vascular/efectos adversos , Dispositivos de Acceso Vascular/economía
8.
Minerva Med ; 105(1): 41-50, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24572451

RESUMEN

AIM: The aim of this registry study was to evaluate the evolution of moderate functional hepatic failure (MTHF) using a proprietary new oak wood supplement (Robuvit®) extracted from Quercus Robur. Recent studies have indicated the protective effect of oak wood extracts on liver injury. Quercus wood extracts have shown hepatoprotective effect on initial induced liver-injury. METHODS: This registry included a total of 75 patients with MTHF characterized by: decreased albumin levels; increased total bilirubin, altered hepatic functions enzymes, increased oxidative stress, negative viral hepatitis markers. RESULTS: The two groups (best management in comparison with best management+ Robuvit®) were comparable: 32 Robuvit® patients and 29 comparable controls) completed the 12-week registry. At inclusion, the blood parameter values in the two groups were comparable. At the end of the supplementation period, the increase in albumin levels was significantly (P<0.05 at 12 weeks) faster and higher in the Robuvit® group. The decrease in ALT-SGPT and AST-ASAT was significant in the supplement group (P<0.05 at 4 and 12 weeks); the tests were normalized at 4 and 12 weeks. Controls remained out of the normal range for more than 12 weeks. Alkaline phosphatase was normalized at 4 and 12 weeks in Robuvit® patients; they were decreased, but not normalized in controls at 4 weeks (Robuvit® group's values were significantly better; P<0.05). Values were normalized in controls (significantly higher in comparison with Robuvit®; P<0.05) at 12 weeks. Total bilirubin was normalized in Robuvit® subjects at 4 and 12 weeks. Results were significantly better in comparison with controls (P<0.05). Direct bilirubin values increased more in the Robuvit® group at 4 and 12 weeks (P<0.05). Gamma GT values were normalized at 4 and 12 weeks in the Robuvit® group. There was a less important decrease in controls (P<0.05) without normalization at 12 weeks. Plasma free radicals increased at inclusion showed a significant decrease in Robuvit® subject (at 4 and 12 weeks) with normalization at 12 weeks. Persisting, elevated values in controls were observed even at 12 weeks (P<0.05). ESR and CRP decreased in both groups with a more important decrease in the Robuvit® group (P<0.05). Hepatitis markers were negative when repeated at 4 and 12 weeks. CONCLUSION: Data from this pilot, supplement registry study indicate a significant protective activity of Robuvit®, associated with a very good safety profile, in patients with temporary hepatic failure. The activity of Robuvit® seems to be mediated by its anti-inflammatory activity.


Asunto(s)
Taninos Hidrolizables/uso terapéutico , Fallo Hepático/tratamiento farmacológico , Fitoterapia/métodos , Extractos Vegetales/uso terapéutico , Quercus/química , Adulto , Bilirrubina/sangre , Estudios de Casos y Controles , Femenino , Humanos , Fallo Hepático/sangre , Masculino , Persona de Mediana Edad , Estrés Oxidativo , Proyectos Piloto , Sistema de Registros , Albúmina Sérica/metabolismo
9.
J Biol Regul Homeost Agents ; 27(2): 497-507, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23830399

RESUMEN

Sirtuins are NAD+-dependent lysine deacetylases. Sirtuins acquired worldwide attention because of their ability to increase yeast, flies, worms and mice lifespan. Recently, this assumption has been challenged. However, their beneficial role on the quality of ageing is widely accepted. In this work we aimed to study how and if sirtuins expression and activity levels varies in function of age and, in the case of young subjects, of exercise. Fifteen blood donors of different ages and fifteen athletes of the Italian rowing male team were enrolled and peripheral blood mononuclear cells (PBMCs) isolated from blood samples. Our results show that sirtuins deacetylases activity measured in PBMCs increases from 18 to 40 years of age and then decreases during the following 20 years. Moreover, physical exercise in professional athletes can upregulate sirtuin activity. Thus, for the first time in humans, we demonstrate that sirtuin activity is a function of age and can be altered through physical exercise.


Asunto(s)
Ejercicio Físico , Sirtuinas/metabolismo , Factores de Edad , Atletas , Donantes de Sangre , Humanos , Leucocitos Mononucleares/enzimología , Masculino
10.
Rev Neurol (Paris) ; 169(4): 291-306, 2013 Apr.
Artículo en Francés | MEDLINE | ID: mdl-23246427

RESUMEN

INTRODUCTION: Stroke is one of the leading causes of death and disability worldwide. Intravenous recombinant tissue plasminogen activator is the only available therapy for acute ischemic stroke, but its use is limited by a narrow therapeutic window and cannot stimulate endogenous repair and regeneration of damaged brain tissue. Stem cell-based approaches hold much promise as potential novel treatments to restore neurological function after stroke. STATE OF THE ART: In this review, we summarize data from preclinical and clinical studies to investigate the potential application of stem cell therapies for treatment of stroke. Stem cells have been proposed as a potential source of new cells to replace those lost due to central nervous system injury, as well as a source of trophic molecules to minimize damage and promote recovery. Various stem cells from multiple sources can generate neural cells that survive and form synaptic connections after transplantation in the stroke-injured brain. Stem cells also exhibit neurorevitalizing properties that may ameliorate neurological deficits through stimulation of neurogenesis, angiogenesis and inhibition of inflammation. PERSPECTIVES/CONCLUSION: Performed in stroke, cell therapy would decrease brain damage and reduce functional deficits. After the damage has been done, it would still improve neurological functions by activating endogenous repair. Nevertheless, many questions raised by experimental studies particularly related to long-term safety and technical details of cell preparation and administration must be resolved before wider clinical use.


Asunto(s)
Trasplante de Células Madre , Accidente Cerebrovascular/terapia , Animales , Isquemia Encefálica/patología , Humanos , Células-Madre Neurales/fisiología , Resultado del Tratamiento
11.
Minerva Cardioangiol ; 60(4): 405-13, 2012 Aug.
Artículo en Italiano | MEDLINE | ID: mdl-22858918

RESUMEN

AIM: Intermittent claudication (IC) in peripheral vascular disease is characterized by lower limb pain appearing on effort. Treatment with PGE1 has been successfully used to manage IC patients. This registry has evaluated safety and costs of PGE1 in the management of IC. METHODS: In this study a long-term treatment protocol (LTP), a short-term protocol (STP) and an outpatient (OP), "on-demand" treatment have been compared. A treadmill effort test has been used to evaluate walking distance. The follow up for these three protocols was 40 weeks. PGE1 treatment was associated to a risk reduction plan and to an exercise program. RESULTS: The final analysis has included 252 LTP patients, 223 STP patients and 284 OP patients (total 659 valid cases). A group of 171 comparable patients not treated with PGE1 was used for a parallel comparison. Cardiovascular mortality and morbidity has been evaluated in 731 PGE1 patients completing 24 months of follow up. All protocols have been well tolerated. No side effects were observed. The lower cost has been observed for OP patients. In the long term, mortality and morbidity were lower in patients treated with PGE1 in comparison with patients not treated with PGE1. CONCLUSION: Considering costs and results (increase in walking distance) and improvement in Karnofsky scale the STP plan appears to be better than LTP for IC patients. The OP, "on-demand" treatment offers further improvements. This last treatment plan is simpler; the plan allows better timing for exercise. The treatment can be used even in non-specialized centers.


Asunto(s)
Alprostadil/administración & dosificación , Claudicación Intermitente/tratamiento farmacológico , Vasodilatadores/administración & dosificación , Anciano , Análisis de Varianza , Análisis Costo-Beneficio , Prueba de Esfuerzo/economía , Femenino , Estudios de Seguimiento , Humanos , Claudicación Intermitente/diagnóstico , Claudicación Intermitente/economía , Claudicación Intermitente/mortalidad , Italia/epidemiología , Masculino , Persona de Mediana Edad , Medición de Riesgo , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores de Tiempo , Resultado del Tratamiento
12.
Open Biol ; 11(6): 210060, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-34129781

RESUMEN

The DNA repair factor CtIP has a critical function in double-strand break (DSB) repair by homologous recombination, promoting the assembly of the repair apparatus at DNA ends and participating in DNA-end resection. However, the molecular mechanisms of CtIP function in DSB repair remain unclear. Here, we present an atomic model for the three-dimensional architecture of human CtIP, derived from a multi-disciplinary approach that includes X-ray crystallography, small-angle X-ray scattering (SAXS) and diffracted X-ray tracking (DXT). Our data show that CtIP adopts an extended dimer-of-dimers structure, in agreement with a role in bridging distant sites on chromosomal DNA during the recombinational repair. The zinc-binding motif in the CtIP N-terminus alters dynamically the coiled-coil structure, with functional implications for the long-range interactions of CtIP with DNA. Our results provide a structural basis for the three-dimensional arrangement of chains in the CtIP tetramer, a key aspect of CtIP function in DNA DSB repair.


Asunto(s)
Endodesoxirribonucleasas/química , Conformación Proteica , Estructura Secundaria de Proteína , Secuencia de Aminoácidos , Endodesoxirribonucleasas/genética , Endodesoxirribonucleasas/metabolismo , Humanos , Modelos Moleculares , Mutación , Dominios y Motivos de Interacción de Proteínas , Multimerización de Proteína , Proteínas Recombinantes , Análisis Espectral , Relación Estructura-Actividad , Difracción de Rayos X
13.
Eur J Vasc Endovasc Surg ; 39(2): 160-4, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19969475

RESUMEN

OBJECTIVE: In contrast to upper extremity stab and gunshot wounds, data on management and outcome in blunt trauma (BT) are limited by small numbers and short follow-up periods. METHODS: This study is a retrospective data analysis. All patients who had undergone arterial repair after upper-limb BT were included. Exclusion criteria were artery ligation and/or primary limb amputation. Endpoints included the following: peri-operative death, limb salvage, primary and secondary patency, vascular re-operation and/or intervention. RESULTS: Eighty-nine patients (71 male; median age: 34.6 years, range: 2.5-81.7) underwent reconstruction of 96 arteries after BT since 1989: subclavian (n=16), axillary (n=22), brachial (n=48) and forearm (n=10). Concomitant arm vein lesions were present in 15 patients (17%) and accompanying nerve (n=38; 43%) and/or orthopaedic injuries (n=64; 72%) in 77 patients (87%). The 30-day mortality rate was 2% with the limb-salvage rate being 98%. Six reconstructions occluded during the first week (primary/secondary patency rate: 93%/99%). After a median follow-up time of 5.1 years, 67% of the patients were followed: There were no secondary amputations and no arterial re-interventions. CONCLUSIONS: Arterial repair in upper extremity BT has excellent early and long-term outcome. In contrast to a significant risk of early occlusion, limb loss after repair, late vascular re-intervention and late arterial occlusion or stenosis are rare.


Asunto(s)
Traumatismos del Brazo/cirugía , Brazo/irrigación sanguínea , Arterias/lesiones , Arterias/cirugía , Heridas no Penetrantes/cirugía , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Traumatismos del Brazo/mortalidad , Niño , Preescolar , Femenino , Humanos , Recuperación del Miembro , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias , Procedimientos de Cirugía Plástica , Estudios Retrospectivos , Resultado del Tratamiento , Grado de Desobstrucción Vascular , Heridas no Penetrantes/mortalidad
14.
J Small Anim Pract ; 61(10): 617-623, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32715489

RESUMEN

OBJECTIVES: To determine the influence of several factors on respiratory system compliance in volume-controlled mechanically ventilated healthy anaesthetised dogs. MATERIALS AND METHODS: Review of 100 dogs anaesthetised for elective surgeries between 2015 and 2016. Dogs were mechanically ventilated with a respiratory rate adjusted to maintain normocapnia and a fraction of inspired oxygen of 50%. Body weight, body condition score, age, thoracic shape, time in spontaneous ventilation before volume-controlled ventilation, time with a fraction of inspired oxygen of 100% until starting mechanical ventilation, type of surgery and patient position were recorded. Respiratory system compliance, expressed per kg of bodyweight, was recorded every 15 minutes following initiation of volume-controlled ventilation. RESULTS: Baseline respiratory system compliance was 1.3 ± 0.3 mL/cmH2 O/kg and was reduced by high body condition score and barrel-shaped thorax but not by age, type of surgery or patient position, time in spontaneous ventilation nor time with a fraction of inspired oxygen of 100%. CLINICAL SIGNIFICANCE: Respiratory system compliance is lower in overweight and barrel-chested dogs and should be taken into account during monitoring of lung function and ventilation management under general anaesthesia.


Asunto(s)
Respiración Artificial , Sistema Respiratorio , Anestesia General/veterinaria , Animales , Perros , Oxígeno , Respiración Artificial/veterinaria , Estudios Retrospectivos
15.
J Hosp Infect ; 106(4): 709-712, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32980489

RESUMEN

At present, the time-frame used for the quarantine of individuals with coronavirus disease 2019 (COVID-19) is the entire duration of symptoms plus 14 days after symptom recovery; however, no data have been reported specifically for healthcare workers (HCWs). In the study population of 142 HCWs with COVID-19, the mean time for viral clearance was 31.8 days. Asymptomatic subjects cleared the virus more quickly than symptomatic subjects (22 vs 34.2 days; P<0.0001). The presence of fever at the time of diagnosis was associated with a longer time to viral clearance (relative risk 11.45, 95% confidence interval 8.66-14.25; P<0.0001). These findings may have a significant impact on healthcare strategies for the future management of the COVID-19 pandemic.


Asunto(s)
COVID-19/transmisión , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/prevención & control , Personal de Salud/estadística & datos numéricos , Adulto , COVID-19/diagnóstico , COVID-19/epidemiología , COVID-19/virología , Infecciones por Coronavirus/transmisión , Transmisión de Enfermedad Infecciosa/prevención & control , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Cuarentena/normas , SARS-CoV-2/genética , Carga Viral/tendencias , Esparcimiento de Virus/efectos de los fármacos , Esparcimiento de Virus/fisiología
16.
Neuron ; 32(1): 79-88, 2001 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-11604140

RESUMEN

Disruption of the presynaptically enriched polyphosphoinositide phosphatase synaptojanin 1 leads to an increase of clathrin-coated intermediates and of polymerized actin at endocytic zones of nerve terminals. These changes correlate with elevated levels of PI(4,5)P(2) in neurons. We report that phosphatidylinositol phosphate kinase type Igamma (PIPKIgamma), a major brain PI(4)P 5-kinase, is concentrated at synapses. Synaptojanin 1 and PIPKIgamma antagonize each other in the recruitment of clathrin coats to lipid membranes. Like synaptojanin 1 and other proteins involved in endocytosis, PIPKIgamma undergoes stimulation-dependent dephosphorylation. These results implicate PIPKIgamma in the synthesis of a PI(4,5)P(2) pool that acts as a positive regulator of clathrin coat recruitment and actin function at the synapse.


Asunto(s)
Fosfatidilinositol 4,5-Difosfato/biosíntesis , Fosfotransferasas (Aceptor de Grupo Alcohol)/metabolismo , Vesículas Sinápticas/enzimología , Actinas/metabolismo , Animales , Anticuerpos , Encéfalo/enzimología , Clatrina/metabolismo , Microscopía Electrónica , Proteínas del Tejido Nervioso/metabolismo , Monoéster Fosfórico Hidrolasas/metabolismo , Fosforilación , Fosfotransferasas (Aceptor de Grupo Alcohol)/análisis , Fosfotransferasas (Aceptor de Grupo Alcohol)/inmunología , Conejos , Ratas , Membranas Sinápticas/enzimología , Membranas Sinápticas/ultraestructura , Vesículas Sinápticas/ultraestructura
17.
Cell Death Differ ; 14(7): 1275-84, 2007 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-17464328

RESUMEN

Mitochondria are crucial amplifiers of death signals. They release cytochrome c and other pro-apoptotic factors required to fully activate effector caspases. This release is accompanied by fragmentation of the mitochondrial reticulum and by remodelling of the internal structure of the organelle. Here we review data supporting the existence of a regulatory network in the inner mitochondrial membrane that includes optic atrophy 1 (Opa1), a dynamin-related protein, and presenilin-associated rhomboid-like (Parl), a rhomboid protease. Opa1 regulates remodelling of the cristae independent of its effect on fusion. Cristae remodelling conversely requires Parl, which participates in the production of a soluble form of Opa1 retrieved together with the integral membrane one in oligomers that are disrupted early during apoptosis. Parl itself is regulated by proteolysis to generate a cleaved form, which in turn modulates the shape of the mitochondrial reticulum. Cleavage of Parl depends on its phosphorylation state around the cleavage site, implicating mitochondrial kinases and phosphatases in the regulation of mitochondrial shape.


Asunto(s)
Apoptosis/fisiología , GTP Fosfohidrolasas/metabolismo , Metaloproteasas/metabolismo , Mitocondrias/metabolismo , Membranas Mitocondriales/metabolismo , Proteínas Mitocondriales/metabolismo , Animales , Forma de la Célula/fisiología , Evolución Molecular , GTP Fosfohidrolasas/genética , Humanos , Metaloproteasas/genética , Mitocondrias/ultraestructura , Membranas Mitocondriales/ultraestructura , Proteínas Mitocondriales/genética , Péptido Hidrolasas/metabolismo , Fosforilación
18.
Panminerva Med ; 50(3): 227-34, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18927527

RESUMEN

AIM: A large variety of adverse reactions are well known to frequently occur during chemotherapy and radiotherapy in oncology. Specific medications exist to target individual side effects. The aim of this study was to explore in a pilot trial whether supplementation with French maritime pine bark extract Pycnogenol could alleviate side effects and improve patient's quality of life. METHODS: Cancer patients who previously underwent surgery and who were in view of their pathology in relatively good condition, both physically and psychologically, were recruited for this study and divided into two groups. These patients received their first cycle of radiotherapy or chemotherapy, which lasted from 10 days up to 1 month. Then one group of patients received 150 mg Pycnogenol, the control group comparable placebo in a single-blinded fashion. The authors studied the occurrence of side effects and made attempts to judge their severity on a semi-quantitative visual analogue scale over a 2 months period starting after patients completed their first cycle of chemo- or radiotherapy, respectively. RESULTS: Twenty five radiotherapy patients receiving Pycnogenol showed a decreased frequency of essentially all investigated side-effects as compared to 21 patients receiving placebo, though in many categories the difference was limited. The most apparent improvements of acute side effects related to decreased soreness and ulceration in the mouth and throat as well as less dryness of the mouth and the eyes. A decreased incidence of nausea /vomiting, diarrhoea, edema and weakness was noticed, which was reflected by semi-quantitative evaluation suggesting that severity was only half or even less pronounced than in the control group. Only one case of deep vein thrombosis occurred in the Pycnogenol group whereas 2 cases of superficial vein thromboses and one case of deep vein thrombosis occurred in the control group (2.9% vs 10%). Thirty four chemotherapy patients were supplemented with Pycnogenol and another 30 patients were in the control group. For all patients this was the first chemotherapy treatment period. The Pycnogenol group presented with a lowered incidence of all investigated side effects as compared to the control group, though in many cases to a limited extent. The most prominent improvements were found for nausea, vomiting, diarrhoea and weight loss. Semi-quantitative evaluation showed that here again symptom severity was half or less pronounced than in the control group. Various further symptoms improved such as cognitive impairment and also cardiotoxicity and neutropenia. Effects on anemia could not be investigated as several patients received erythrocyte transfusion. In the Pycnogenol group one case of superficial vein thrombosis was indentified while 3 cases of superficial vein thromboses and one deep vein thrombosis were detected in the control group (4% vs 19%). In both chemotherapy and radiotherapy patients Pycnogenol lowered the requirement for medication to address side effects. This was reflected by less days of hospitalisation the patients required. The authors did not investigate a possible interference with the anti-neoplastic efficacy of chemo- and radiotherapy. This possibility requires attention in future studies with Pycnogenol. From their previous clinical experience the authors suggest that alleviation of side effects described in this study results from Pycnogenol activities related to endothelial protection, and anti-inflammatory anti-edema activities. CONCLUSION: The results of this pilot trial warrant further prospective studies with larger number of patients to validate benefits more specifically with regard to type of malignancy and treatment regimen.


Asunto(s)
Antineoplásicos/efectos adversos , Flavonoides/uso terapéutico , Neoplasias/terapia , Calidad de Vida , Adulto , Anciano , Femenino , Humanos , Estado de Ejecución de Karnofsky , Masculino , Persona de Mediana Edad , Neoplasias/tratamiento farmacológico , Neoplasias/radioterapia , Proyectos Piloto , Extractos Vegetales , Radioterapia/efectos adversos , Método Simple Ciego , Factores de Tiempo , Resultado del Tratamiento
19.
Phytother Res ; 22(4): 518-23, 2008 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-18386255

RESUMEN

The aim of this double-blind, placebo-controlled study was to evaluate the efficacy of 100 mg Pycnogenol daily (oral capsules) in a 3 month study in patients with osteoarthritis (OA). OA symptoms were evaluated by WOMAC scores, mobility by recording their walking performance (treadmill). Treatment (77 patients) and placebo group (79) were comparable for age, sex distribution, WOMAC scores, walking distances and use of antiinflammatory drugs. The global WOMAC score decreased by 56% (p < 0.05) in the treatment group versus 9.6% in the placebo group. Walking distance in the treadmill test was prolonged from 68 m at the start to 198 m after 3 months treatment (p < 0.05), under placebo, from 65 m to 88 m (NS). The use of drugs decreased by 58% in the treatment group (p < 0.05) versus 1% under placebo. Gastrointestinal complications decreased by 63% in the treatment group, but only 3% under placebo. Overall, treatment costs were reduced significantly compared with placebo. Foot edema was present in 76% of the patients of the treatment group at inclusion and in 79% of the controls. After 3 months edema decreased in 79% of Pycnogenol patients (p < 0.05) vs 1% in controls. In conclusion, Pycnogenol offers an option for reduction of treatment costs and side effects by sparing antiinflammatory drugs.


Asunto(s)
Flavonoides/uso terapéutico , Osteoartritis/tratamiento farmacológico , Adyuvantes Inmunológicos/efectos adversos , Adyuvantes Inmunológicos/uso terapéutico , Adulto , Distribución por Edad , Tobillo/patología , Antiinflamatorios/efectos adversos , Antiinflamatorios/uso terapéutico , Método Doble Ciego , Edema/tratamiento farmacológico , Edema/patología , Femenino , Flavonoides/efectos adversos , Pie/patología , Humanos , Masculino , Persona de Mediana Edad , Osteoartritis/patología , Osteoartritis/fisiopatología , Dolor/tratamiento farmacológico , Dolor/patología , Extractos Vegetales , Distribución por Sexo , Resultado del Tratamiento
20.
Minerva Cardioangiol ; 56(5 Suppl): 21-7, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19597406

RESUMEN

UNLABELLED: Fingerprints (FP), characteristic of humans, are impressions due to skin marks (ridges) on fingertips. Ridges are present on fingers/hands forming curved lines of different sizes/patterns. The point where a line stops or splits is defined typica' (their number/amount constitute identification patterns). FP are permanent and unique. This study compared FP patterns with cardiovascular risk factors: 7 main types of FP were used: 1. Arch: lines form waves from one site to the other side. 2. Tentarch: like arches but with a rising stick in the middle. 3. Loop: lines coming from one site returning in the middle to the same site. 4. Double loop: like loops but with two loops inside: one standing, one hanging. 5. Pocked loop: like the loop but with a small circle in the turning point. 6. Whorl: lines make circles. 7. Mixed figure: composed of different figures. There are two kinds of real typica: A. Ending line; B. Splitting lines (bifurcations). Several combinations may result. Ultrasound evaluation of carotid/femoral arteries in asymptomatic subjects. Arteries were evaluated with high-resolution ultrasound at the bifurcations. Four classes were defined: 1: normal intima-media (IMT) complex; 2: IMT thickening; 3: non-stenosing plaques (<50% stenosis); 4: stenosing plaque (>50%). Subjects in classes 1, 2, 3 were included into the analysis made comparing FP patterns and ultrasound. RESULTS: For each FP pattern: A. the main proportion of subjects with cardiovacular risk factors (91%) had arches (41.2%) and loops (either single, 38.2% or double 11.7% for a total of 49.9%). B. The remaining classes were statistically less important. C. The number of ridges per square mm was comparable in all pattern classes. D. The analysis of typica and other ridges characteristics requires a more elaborated system. Future research must define simple, low cost screening methods for preselection of subjects at higher cardiovascular risk or for exclusion of low risk subjects. The evaluation of fingerprint pattern may be useful to define risk groups.


Asunto(s)
Enfermedades Cardiovasculares/diagnóstico , Dermatoglifia , Anciano , Anciano de 80 o más Años , Aorta/diagnóstico por imagen , Aterosclerosis/diagnóstico por imagen , Enfermedades Cardiovasculares/diagnóstico por imagen , Arterias Carótidas/diagnóstico por imagen , Progresión de la Enfermedad , Femenino , Arteria Femoral/diagnóstico por imagen , Humanos , Italia , Masculino , Tamizaje Masivo , Medición de Riesgo , Factores de Riesgo , Sensibilidad y Especificidad , Túnica Íntima/diagnóstico por imagen , Túnica Media/diagnóstico por imagen , Ultrasonografía
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA