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1.
Hematol Oncol ; 40(5): 1109-1112, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35570682

RESUMEN

The ever-increasing advances in high-throughput sequencing have broadened our understanding of the genetic pathogenesis of Philadelphia-negative myeloproliferative neoplasms (MPNs). Convergent studies have shown that MPN driver mutations associate with additional mutations found in genes coding for negative regulators of the JAK/STAT signaling, including the SH2B3 (SH2B-adaptor protein 3, also known as LNK). Here, we describe a novel heterozygous start-loss mutation of the SH2B3 gene (c.3G>A, SH2B3M? ) in a consanguineous family characterized by recurrent early onset of JAK2V617F -positive MPNs. The model represented by this pedigree suggests that the SH2B3 could be a predisposing mutation that facilitates the acquisition of driver mutations.


Asunto(s)
Neoplasias , Humanos , Mutación
2.
Neurocrit Care ; 33(1): 124-131, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-31696410

RESUMEN

BACKGROUND AND AIMS: Lipid peroxidation represents a marker of secondary brain injury both in traumatic and in non-traumatic conditions-as in major neurosurgical procedures-eventually leading to brain edema amplification and further brain damage. Malondialdehyde (MDA), a lipid peroxidation marker, and ascorbate, a marker of antioxidant status, can represent early indicators of this process within the cerebrospinal fluid (CSF). We hypothesized that changes in cerebral lipid peroxidation can be measured ex vivo following neurosurgery in children. METHODS: Thirty-six children (M:F = 19/17, median age 32.9 months; IQR 17.6-74.6) undergoing neurosurgery for brain tumor removal were admitted to the pediatric intensive care unit (PICU) in the postoperative period with an indwelling intraventricular catheter for intracranial pressure monitoring and CSF drainage. Plasma and CSF samples were obtained for serial measurement of MDA, ascorbate, and cytokines. RESULTS: An early brain-limited increase in lipid peroxidation was measured, with a significant increase from baseline of MDA in CSF (p = 0.007) but not in plasma. In parallel, ascorbate in CSF decreased (p = 0.05). Systemic inflammatory response following brain surgery was evidenced by plasma IL-6/IL-8 increase (p 0.0022 and 0.0106, respectively). No correlation was found between oxidative response and tumor site or histology (according to World Health Organization grading). Similarly, lipid peroxidation was unrelated to the length of surgery (mean 321 ± 73 min), or intraoperative blood loss (mean 20.9 ± 16.8% of preoperative volemia, 44% given hemotransfusions). Median PICU stay was 3.5 days (IQL range 2-5.5 d.), and postoperative ventilation need was 24 h (IQL range 20-61.5 h). The elevation in postoperative MDA in CSF compared with preoperative values correlated significantly with postoperative ventilation need (P = 0.05, r2 0168), while no difference in PICU stay was recorded. CONCLUSIONS: Our results indicate that lipid peroxidation increases consistently following brain surgery, and it is accompanied by a decrease in antioxidant defences; intraventricular catheterization offers a unique chance of oxidative process monitoring. Further studies are needed to evaluate whether monitoring post-neurosurgical oxidative stress in CSF is of prognostic utility.


Asunto(s)
Ácido Ascórbico/líquido cefalorraquídeo , Lesiones Encefálicas/metabolismo , Neoplasias Encefálicas/cirugía , Citocinas/líquido cefalorraquídeo , Peroxidación de Lípido , Malondialdehído/líquido cefalorraquídeo , Procedimientos Neuroquirúrgicos , Complicaciones Posoperatorias/metabolismo , Antioxidantes/metabolismo , Ácido Ascórbico/sangre , Niño , Preescolar , Citocinas/sangre , Drenaje , Femenino , Humanos , Lactante , Unidades de Cuidado Intensivo Pediátrico , Interleucina-6/sangre , Interleucina-6/líquido cefalorraquídeo , Interleucina-8/sangre , Interleucina-8/líquido cefalorraquídeo , Presión Intracraneal , Masculino , Malondialdehído/sangre , Monitoreo Fisiológico , Estrés Oxidativo , Respiración Artificial/estadística & datos numéricos
3.
EMBO J ; 34(1): 115-29, 2015 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-25398909

RESUMEN

The telomeric transcriptome comprises multiple long non-coding RNAs generated by transcription of linear chromosome ends. In a screening performed in Schizosaccharomyces pombe, we identified factors modulating the cellular levels of the telomeric transcriptome. Among these factors, Cay1 is the fission yeast member of the conserved family of Cactins, uncharacterized proteins crucial for cell growth and survival. In cay1∆ mutants, the cellular levels of the telomeric factor Rap1 are drastically diminished due to defects in rap1+ pre-mRNA splicing and Rap1 protein stability. cay1∆ cells accumulate histone H3 acetylated at lysine 9 at telomeres, which become transcriptionally desilenced, are over-elongated by telomerase and cause chromosomal aberrations in the cold. Overexpressing Rap1 in cay1+ deleted cells significantly reverts all telomeric defects. Additionally, cay1∆ mutants accumulate unprocessed Tf2 retrotransposon RNA through Rap1-independent mechanisms. Thus, Cay1 plays crucial roles in cells by ultimately harmonizing expression of transcripts originating from seemingly unrelated genomic loci.


Asunto(s)
Cromosomas Fúngicos/metabolismo , Proteínas Nucleares/metabolismo , Schizosaccharomyces/metabolismo , Telómero/metabolismo , Transcripción Genética/fisiología , Aberraciones Cromosómicas , Cromosomas Fúngicos/genética , Eliminación de Gen , Proteínas Nucleares/genética , Estabilidad Proteica , Empalme del ARN/fisiología , ARN de Hongos/genética , ARN de Hongos/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo , Retroelementos/fisiología , Schizosaccharomyces/genética , Proteínas de Schizosaccharomyces pombe/genética , Proteínas de Schizosaccharomyces pombe/metabolismo , Complejo Shelterina , Telómero/genética , Proteínas de Unión a Telómeros/genética , Proteínas de Unión a Telómeros/metabolismo
4.
J Cell Sci ; 130(4): 767-778, 2017 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-28062851

RESUMEN

Cactins constitute a family of eukaryotic proteins broadly conserved from yeast to human and required for fundamental processes such as cell proliferation, genome stability maintenance, organismal development and immune response. Cactin proteins have been found to associate with the spliceosome in several model organisms, nevertheless their molecular functions await elucidation. Here we show that depletion of human cactin leads to premature sister chromatid separation, genome instability and cell proliferation arrest. Moreover, cactin is essential for efficient splicing of thousands of pre-mRNAs, and incomplete splicing of the pre-mRNA of sororin (also known as CDCA5), a cohesin-associated factor, is largely responsible for the aberrant chromatid separation in cactin-depleted cells. Lastly, cactin physically and functionally interacts with the spliceosome-associated factors DHX8 and SRRM2. We propose that cellular complexes comprising cactin, DHX8 and SRRM2 sustain precise chromosome segregation, genome stability and cell proliferation by allowing faithful splicing of specific pre-mRNAs. Our data point to novel pathways of gene expression regulation dependent on cactin, and provide an explanation for the pleiotropic dysfunctions deriving from cactin inactivation in distant eukaryotes.


Asunto(s)
Proteínas Portadoras/metabolismo , Cromátides/metabolismo , ARN Helicasas DEAD-box/metabolismo , Precursores del ARN/genética , Factores de Empalme de ARN/metabolismo , Empalme del ARN/genética , Proteínas de Unión al ARN/metabolismo , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Ciclo Celular , Proteínas de Ciclo Celular/metabolismo , Forma del Núcleo Celular , Proliferación Celular , Inestabilidad Genómica , Células HEK293 , Células HeLa , Humanos , Intrones/genética , Unión Proteica , Precursores del ARN/metabolismo
5.
Ann Oncol ; 29(12): 2288-2295, 2018 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-30304498

RESUMEN

Quality of life (QoL) is a relevant end point and a topic of growing interest by both scientific community and regulatory authorities. Our aim was to review QoL prevalence as an end point in cancer phase III trials published in major journals and to evaluate QoL reporting deficiencies in terms of under-reporting and delay of publication. All issues published between 2012 and 2016 by 11 major journals were hand-searched for primary publications of phase III trials in adult patients with solid tumors. Information about end points was derived from paper and study protocol, when available. Secondary QoL publications were searched in PubMed. In total, 446 publications were eligible. In 210 (47.1%), QoL was not included among end points. QoL was not an end point in 40.1% of trials in the advanced/metastatic setting, 39.7% of profit trials and 53.6% of non-profit trials. Out of 231 primary publications of trials with QoL as secondary or exploratory end point, QoL results were available in 143 (61.9%). QoL results were absent in 37.6% of publications in the advanced/metastatic setting, in 37.1% of profit trials and 39.3% of non-profit trials. Proportion of trials not including QoL as end point or with missing QoL results was relevant in all tumor types and for all treatment types. Overall, 70 secondary QoL publications were found: for trials without QoL results in the primary publication, probability of secondary publication was 12.5%, 30.9% and 40.3% at 1, 2 and 3 years, respectively. Proportion of trials not reporting QoL results was similar in trials with positive results (36.5%) and with negative results (39.4%), but the probability of secondary publication was higher in positive trials. QoL is not included among end points in a relevant proportion of recently published phase III trials in solid tumors. In addition, QoL results are subject to significant under-reporting and delay in publication.


Asunto(s)
Ensayos Clínicos Fase III como Asunto/normas , Oncología Médica/normas , Neoplasias/terapia , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto/normas , Humanos , Neoplasias/mortalidad , Neoplasias/psicología , Medición de Resultados Informados por el Paciente , Guías de Práctica Clínica como Asunto , Supervivencia sin Progresión , Proyectos de Investigación/normas
6.
Artículo en Inglés | MEDLINE | ID: mdl-27726223

RESUMEN

The Multidimensional Geriatric Assessment (MGA) is currently used for assessing geriatric oncological patients, but a new prognostic index - the Multidimensional Prognostic Index (MPI) - has a demonstrated prognostic value in cancer patients too. The present work was designed to compare the MPI and MGA as predictors of 12-month mortality. 160 patients ≥70 years old with locally-advanced or metastatic solid cancers consecutively joining our Geriatric Oncology Program were administered a Comprehensive Geriatric Assessment to calculate their MGA and MPI scores. SETTINGS: Geriatric Clinic, Geriatric Surgery Clinic, Medical Oncology Unit, Padova Hospital, Italy. Using Cohen's Kappa coefficient, there was a poor concordance between the MPI and MGA. Severe MPI being associated with a higher mortality risk than Frail in the MGA. The ROC curves indicated that the MPI had a greater discriminatory power for 12-month mortality than the MGA. In our population of elderly cancer patients, the MPI performed better than the MGA in predicting mortality. Further evidence from larger prospective trials is needed to establish whether other geriatric scales, such as the GDS and CIRS-SI, could enhance the value of prognostic indexes applied to elderly cancer patients.


Asunto(s)
Evaluación Geriátrica/métodos , Neoplasias/mortalidad , Índice de Severidad de la Enfermedad , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Italia/epidemiología , Masculino , Pronóstico , Estudios Prospectivos , Curva ROC
7.
BMC Pediatr ; 18(1): 282, 2018 08 25.
Artículo en Inglés | MEDLINE | ID: mdl-30144795

RESUMEN

BACKGROUND: Noninvasive ventilation (NIV) is increasingly utilized in infants and young children, though associated with high failure rates due to agitation and poor compliance, mostly if patient-ventilator synchronization is required. METHODS: A retrospective cohort study was carried out in an academic pediatric intensive care unit (PICU). Dexmedetomidine (DEX) was infused as unique sedative in 40 consecutive pediatric patients (median age 16 months) previously showing intolerance and agitation during NIV application. RESULTS: During NIV clinical application both COMFORT-B Score and Richmond Agitation-Sedation Scale (RASS) were serially evaluated. Four patients experiencing NIV failure, all due to pulmonary condition worsening, required intubation and invasive ventilation. 36 patients were successfully weaned from NIV under DEX sedation and discharged from PICU. All patients survived until home discharge. CONCLUSION: Our data suggest that DEX may represent an effective sedative agent in infants and children showing agitation during NIV. Early use of DEX in infants/children receiving NIV for acute respiratory failure (ARF) should be considered safe and capable of improving NIV, thus permitting both lung recruitment and patient-ventilator synchronization.


Asunto(s)
Dexmedetomidina/uso terapéutico , Hipnóticos y Sedantes/uso terapéutico , Ventilación no Invasiva , Insuficiencia Respiratoria/terapia , Preescolar , Dexmedetomidina/efectos adversos , Femenino , Humanos , Hipnóticos y Sedantes/efectos adversos , Lactante , Unidades de Cuidado Intensivo Pediátrico , Masculino , Oxígeno/sangre , Comodidad del Paciente , Cooperación del Paciente , Estudios Retrospectivos
8.
Neuropathol Appl Neurobiol ; 43(2): 133-153, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27178390

RESUMEN

AIMS: Cytoplasmic accumulation of the nuclear protein transactive response DNA-binding protein 43 (TDP-43) is an early determinant of motor neuron degeneration in most amyotrophic lateral sclerosis (ALS) cases. We previously disclosed this accumulation in circulating lymphomonocytes (CLM) of ALS patients with mutant TARDBP, the TDP-43-coding gene, as well as of a healthy individual carrying the parental TARDBP mutation. Here, we investigate TDP-43 subcellular localization in CLM and in the constituent cells, lymphocytes and monocytes, of patients with various ALS-linked mutant genes. METHODS: TDP-43 subcellular localization was analysed with western immunoblotting and immunocytofluorescence in CLM of healthy controls (n = 10), patients with mutant TARDBP (n = 4, 1 homozygous), valosin-containing protein (VCP; n = 2), fused in sarcoma/translocated in liposarcoma (FUS; n = 2), Cu/Zn superoxide dismutase 1 (SOD1; n = 6), chromosome 9 open reading frame 72 (C9ORF72; n = 4), without mutations (n = 5) and neurologically unaffected subjects with mutant TARDBP (n = 2). RESULTS: TDP-43 cytoplasmic accumulation was found (P < 0.05 vs. controls) in CLM of patients with mutant TARDBP or VCP, but not FUS, in line with TDP-43 subcellular localization described for motor neurons of corresponding groups. Accumulation also characterized CLM of the healthy individuals with mutant TARDBP and of some patients with mutant SOD1 or C9ORF72. In 5 patients, belonging to categories described to carry TDP-43 mislocalization in motor neurons (3 C9ORF72, 1 TARDBP and 1 without mutations), TDP-43 cytoplasmic accumulation was not detected in CLM or in lymphocytes but was in monocytes. CONCLUSIONS: In ALS forms characterized by TDP-43 mislocalization in motor neurons, monocytes display this alteration, even when not manifest in CLM. Monocytes may be used to support diagnosis, as well as to identify subjects at risk, of ALS and to develop/monitor targeted treatments.


Asunto(s)
Esclerosis Amiotrófica Lateral/genética , Esclerosis Amiotrófica Lateral/metabolismo , Proteínas de Unión al ADN/genética , Proteínas de Unión al ADN/metabolismo , Monocitos/metabolismo , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mutación
9.
New Microbiol ; 39(2): 134-8, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-27196552

RESUMEN

Surgical site infections (SSI) after caesarean section (CS) represent a substantial health system concern. Surveying SSI has been associated with a reduction in SSI incidence. We report the findings of three (2008, 2011 and 2013) regional active SSI surveillances after CS in community hospital of the Latium region determining the incidence of SSI. Each CS was surveyed for SSI occurrence by trained staff up to 30 post-operative days, and association of SSI with relevant characteristics was assessed using binomial logistic regression. A total of 3,685 CS were included in the study. A complete 30 day post-operation follow-up was achieved in over 94% of procedures. Overall 145 SSI were observed (3.9% cumulative incidence) of which 131 (90.3%) were superficial and 14 (9.7%) complex (deep or organ/space) SSI; overall 129 SSI (of which 89.9% superficial) were diagnosed post-discharge. Only higher NNIS score was significantly associated with SSI occurrence in the regression analysis. Our work provides the first regional data on CS-associated SSI incidence, highlighting the need for a post-discharge surveillance which should assure 30 days post-operation to not miss data on complex SSI, as well as being less labour intensive.


Asunto(s)
Cesárea/efectos adversos , Alta del Paciente , Vigilancia de la Población , Infección de la Herida Quirúrgica/prevención & control , Antibacterianos/farmacología , Femenino , Humanos , Incidencia , Embarazo , Factores de Riesgo , Factores de Tiempo
10.
J Appl Clin Med Phys ; 16(2): 5102, 2015 Mar 08.
Artículo en Inglés | MEDLINE | ID: mdl-26103179

RESUMEN

The purpose of this study was to evaluate setup uncertainties for brain sites with ExacTrac X-Ray 6D system and to provide optimal margin guidelines. Fifteen patients with brain tumor were included in this study. Two X-ray images with ExacTrac X-Ray 6D system were used to verify patient position and tumor target localization before each treatment. The 6D fusion software first generates various sets of DRRs with position variations in both three translational and three rotational directions (six degrees of freedom) for the CT images. Setup variations (translation and rotation) after correction were recorded and corrected before treatment. The 3D deviations are expressed as mean ± standard deviation. The random error (Σ(σi)), systematic error (µi), and group systematic error (M(µi)) for the different X-ray were calculated using the definitions of van Herk.(1) Mean setup errors were calculated from X-ray images acquired after all fractions. There is moderate patient-to-patient variation in the vertical direction and small variations in systematic errors and magnitudes of random errors are smaller. The global systematic errors were measured to be less than 2.0 mm in each direction. Random component of all patients are smaller ranging from 0.1-0.3 mm small. The safety margin (SM) to the lateral, is 0.5 mm and 2.6 mm for van Herk(1) and Stroom et al.,(2) respectively, craniocaudal axis is 1.5 mm and 3.4 mm, respectively, and with respect to the antero-posterior axis, 2.3 mm and 3.9 mm. Daily X-ray imaging is essential to compare and assess the accuracy of treatment delivery to different anatomical locations.


Asunto(s)
Neoplasias Encefálicas/cirugía , Posicionamiento del Paciente , Radiocirugia , Planificación de la Radioterapia Asistida por Computador/métodos , Errores de Configuración en Radioterapia , Radioterapia Guiada por Imagen , Medios de Contraste , Humanos , Imagen por Resonancia Magnética/métodos , Rayos X
11.
Tech Coloproctol ; 19(6): 333-8, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25744688

RESUMEN

BACKGROUND: The therapy of pelvic floor dyssynergia is mostly conservative and is based on a high-fiber diet, physical activity and biofeedback training. Our aim was to compare the outcome of biofeedback (manometric-assisted pelvic relaxation and simulated defecation training) plus transanal electrostimulation with standard therapy (diet, exercise, laxatives). METHODS: Clinical, physiologic and quality of life [patient assessment of constipation quality of life (PAC-QOL)] measures, anorectal manometry and balloon expulsion test results were collected prospectively at baseline, at the end of the treatment and 6 months after treatment. Primary outcome was the modification of the Wexner score for defecation (WS) and the obstructed defecation score (ODS). Secondary outcomes were the modifications of anorectal manometry pattern and quality of life after treatment. RESULTS: The mean WS and ODS decreased significantly in the EMG biofeedback group: The WS decreased from 16.7 ± 4 to 10 ± 3.5 p < 0.0102, and the ODS decreased from 18.3 ± 5.5 to 5.7 ± 1.8, p < 0.0001. Besides, WS and ODS did not change significantly in the control group. The PAC-QOL score improved significantly from 61 ± 8.6 to 23 ± 4.8 (p < 0.0001) in the EMG biofeedback group; otherwise, the PAC-QOL score did not change significantly in the control group. CONCLUSIONS: Biofeedback therapy plus transanal electrostimulation provided sustained improvement in bowel symptoms and anorectal function in constipated subjects with dyssynergic defecation, whereas standard therapy was largely ineffective.


Asunto(s)
Ataxia/terapia , Biorretroalimentación Psicológica/métodos , Terapia por Estimulación Eléctrica/métodos , Trastornos del Suelo Pélvico/terapia , Adulto , Canal Anal/fisiopatología , Terapia Combinada , Estreñimiento/fisiopatología , Estreñimiento/psicología , Defecación/fisiología , Humanos , Estudios Prospectivos , Calidad de Vida , Recto/fisiopatología , Índice de Severidad de la Enfermedad , Resultado del Tratamiento
12.
J Neurooncol ; 117(2): 295-301, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24488446

RESUMEN

Stereotactic radiosurgery (SRS) delivered in 2-5 fractions (multi-fraction SRS) has been employed in patients with brain metastases as an alternative to single-fraction SRS with the aim to reduce late radiation-induced toxicity while maintaining high local control rate. In the present study we have evaluated the efficacy and toxicity of multi-fraction SRS in patients with 1-3 brain metastases. Between March 2006 and October 2012, 135 patients (63 men and 72 women) with 171 brain metastases have been treated with multi-fraction SRS (3 × 9 Gy or 3 × 12 Gy). At a median follow-up of 11.4 months, 16 lesions recurred locally. The 1- and 2-year local control rates were 88 and 72 %, respectively. The 1- and 2-year survival rates were 57 and 25 %, and respective distant failure rates were 52 and 73 %. Seventy-eight percent of patients succumbed to their extracranial disease and 22 % died of progressive intracranial disease. Multivariate analysis showed that melanoma histology was predictive of local failure (p = 0.02; HR 6.1, 95 % CI 1.5-24). Specifically, the 1-year local control rates were 68 % for melanoma, 92 % for breast carcinoma, and 88 % for NSCLC, respectively. Stable extracranial disease (p = 0.004) and Karnofsky performance status (p = 0.01) were predictive of longer survival. Radiologic changes suggestive of radionecrosis occurred in 12 (7 %) out of 171 lesions, with an actuarial risk of 9 % at 1 year and 17 % at 2 years, respectively. In conclusion, multi-fraction SRS appears to be an effective and safe treatment modality for brain metastases. It may represent an alternative to single-dose SRS for patients with large lesions or lesions located near critical structures.


Asunto(s)
Neoplasias Encefálicas/secundario , Neoplasias Encefálicas/cirugía , Radiocirugia/métodos , Anciano , Neoplasias Encefálicas/mortalidad , Fraccionamiento de la Dosis de Radiación , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Necrosis/patología , Modelos de Riesgos Proporcionales , Traumatismos por Radiación/epidemiología , Traumatismos por Radiación/etiología , Radiocirugia/efectos adversos
13.
Minerva Surg ; 79(4): 470-480, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38953759

RESUMEN

Locally advanced extraperitoneal rectal cancer represents a significant clinical challenge, and currently, the standard treatment is based on neoadjuvant chemoradiation therapy (CRT) followed by radical surgical resection with total mesorectal excision (TME). In the last 30 years, its management has undergone significant changes due to the improvement of complementary radio- and chemotherapy treatments, the improvement of minimally invasive surgical approaches and the diffusion of organ-sparing approaches, such as nonoperative management, commonly called "watch and wait" (NOM) and local excision (LE), in highly selected patients who achieve a major or complete response to neoadjuvant CRT. This review aimed to critically examine the efficacy and oncological safety of NOM and LE compared to those of standard TME in rectal cancer patients after neoadjuvant CRT. Both the pros and cons of these approaches were strictly analyzed, providing a comprehensive and critical overview of these novel management strategies for rectal cancer.


Asunto(s)
Terapia Neoadyuvante , Neoplasias del Recto , Neoplasias del Recto/terapia , Neoplasias del Recto/radioterapia , Humanos , Espera Vigilante , Quimioradioterapia , Resultado del Tratamiento , Quimioradioterapia Adyuvante
14.
Microorganisms ; 12(1)2024 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-38276198

RESUMEN

Hospital-acquired pneumonia (HAP) and its subtype, ventilator-associated pneumonia (VAP), remain two significant causes of morbidity and mortality worldwide, despite the better understanding of pathophysiological mechanisms, etiology, risk factors, preventive methods (bundle of care principles) and supportive care. Prior detection of the risk factors combined with a clear clinical judgement based on clinical scores and dosage of different inflammatory biomarkers (procalcitonin, soluble triggering receptor expressed on myelloid cells type 1, C-reactive protein, mid-regional pro-adrenomedullin, mid-regional pro-atrial natriuretic peptide) represent the cornerstones of a well-established management plan by improving patient's outcome. This review article provides an overview of the newly approved terminology considering nosocomial pneumonia, as well as the risk factors, biomarkers, diagnostic methods and new treatment options that can guide the management of this spectrum of infections.

15.
Circ Cardiovasc Interv ; 17(4): e013196, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38626077

RESUMEN

BACKGROUND: Various mitral repair techniques have been described. Though these repair techniques can be highly effective when performed correctly in suitable patients, limited quantitative biomechanical data are available. Validation and thorough biomechanical evaluation of these repair techniques from translational large animal in vivo studies in a standardized, translatable fashion are lacking. We sought to evaluate and validate biomechanical differences among different mitral repair techniques and further optimize repair operations using a large animal mitral valve prolapse model. METHODS: Male Dorset sheep (n=20) had P2 chordae severed to create the mitral valve prolapse model. Fiber Bragg grating force sensors were implanted to measure chordal forces. Ten sheep underwent 3 randomized, paired mitral valve repair operations: neochord repair, nonresectional leaflet remodeling, and triangular resection. The other 10 sheep underwent neochord repair with 2, 4, and 6 neochordae. Data were collected at baseline, mitral valve prolapse, and after each repair. RESULTS: All mitral repair techniques successfully eliminated regurgitation. Compared with mitral valve prolapse (0.54±0.18 N), repair using neochord (0.37±0.20 N; P=0.02) and remodeling techniques (0.30±0.15 N; P=0.001) reduced secondary chordae peak force. Neochord repair further decreased primary chordae peak force (0.21±0.14 N) to baseline levels (0.20±0.17 N; P=0.83), and was associated with lower primary chordae peak force compared with the remodeling (0.34±0.18 N; P=0.02) and triangular resectional techniques (0.36±0.27 N; P=0.03). Specifically, repair using 2 neochordae resulted in higher peak primary chordal forces (0.28±0.21 N) compared with those using 4 (0.22±0.16 N; P=0.02) or 6 neochordae (0.19±0.16 N; P=0.002). No difference in peak primary chordal forces was observed between 4 and 6 neochordae (P=0.05). Peak forces on the neochordae were the lowest using 6 neochordae (0.09±0.11 N) compared with those of 4 neochordae (0.15±0.14 N; P=0.01) and 2 neochordae (0.29±0.18 N; P=0.001). CONCLUSIONS: Significant biomechanical differences were observed underlying different mitral repair techniques in a translational large animal model. Neochord repair was associated with the lowest primary chordae peak force compared to the remodeling and triangular resectional techniques. Additionally, neochord repair using at least 4 neochordae was associated with lower chordal forces on the primary chordae and the neochordae. This study provided key insights about mitral valve repair optimization and may further improve repair durability.


Asunto(s)
Implantación de Prótesis de Válvulas Cardíacas , Insuficiencia de la Válvula Mitral , Prolapso de la Válvula Mitral , Humanos , Masculino , Animales , Ovinos , Insuficiencia de la Válvula Mitral/diagnóstico por imagen , Insuficiencia de la Válvula Mitral/cirugía , Prolapso de la Válvula Mitral/diagnóstico por imagen , Prolapso de la Válvula Mitral/cirugía , Válvula Mitral/diagnóstico por imagen , Válvula Mitral/cirugía , Implantación de Prótesis de Válvulas Cardíacas/métodos , Cuerdas Tendinosas/cirugía , Resultado del Tratamiento
16.
Foods ; 12(6)2023 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-36981048

RESUMEN

For centuries human civilization has cultivated oats, and now they are consumed in various forms of food, from instant breakfasts to beverages. They are a nutrient-rich food containing linear mixed-linkage (1 → 3) (1 → 4)-ß-d-glucans, which are relatively well soluble in water and responsible for various biological effects: the regulation of the blood cholesterol level, as well as being anti-inflammatory, prebiotic, antioxidant, and tumor-preventing. Numerous studies, especially in the last two decades, highlight the differences in the biological properties of the oat ß-d-glucan fractions of low, medium, and high molecular weight. These fractions differ in their features due to variations in bioavailability related to the rheological properties of these polysaccharides, and their association with food matrices, purity, and mode of preparation or modification. There is strong evidence that, under different conditions, the molecular weight may determine the potency of oat-extracted ß-d-glucans. In this review, we intend to give a concise overview of the properties and studies of the biological activities of oat ß-d-glucan preparations depending on their molecular weight and how they represent a prospective ingredient of functional food with the potential to prevent or modulate various pathological conditions.

17.
Tech Coloproctol ; 16(1): 37-53, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22170252

RESUMEN

BACKGROUND: Laparoscopic rectopexy to treat full-thickness rectal prolapse has proven short-term benefits, but there are few long-term follow-up and functional outcome data available. Using meta-analysis techniques, this study was designed to evaluate long-term results of open and laparoscopic abdominal procedures to treat full-thickness rectal prolapse in adults. METHODS: A literature review was performed using the National Library of Medicine's PubMed database. All articles on abdominal rectopexy patients with a follow-up longer than 16 months were considered. The primary end point was recurrence of rectal prolapse, and the secondary end points were improvement in incontinence and constipation. A random effect model was used to aggregate the studies reporting these outcomes, and heterogeneity was assessed. RESULTS: Eight comparative studies, consisting of a total of 467 patients (275 open and 192 laparoscopic), were included. Analysis of the data suggested that there is no significant difference in recurrence, incontinence and constipation improvement between laparoscopic abdominal rectopexy and open abdominal rectopexy. Considering non-comparative trials, the event rate for recurrence was similar in open and laparoscopic suture rectopexy studies and in open and laparoscopic mesh rectopexy trials. Improvement in constipation after the intervention was not statistically significant except for open mesh repair; postoperative improvement in incontinence was statistically significant after laparoscopic procedures and open mesh rectopexy. CONCLUSIONS: Laparoscopic abdominal rectopexy is a safe and feasible procedure, which may compare equally with the open technique with regard to recurrence, incontinence and constipation. However, large-scale randomized trials, with comparative, strong methodology, are still needed to identify outcome measures accurately.


Asunto(s)
Estreñimiento/fisiopatología , Incontinencia Fecal/fisiopatología , Prolapso Rectal/complicaciones , Prolapso Rectal/cirugía , Estreñimiento/etiología , Incontinencia Fecal/etiología , Humanos , Laparoscopía/efectos adversos , Recurrencia , Mallas Quirúrgicas , Técnicas de Sutura
18.
Immunotherapy ; 14(14): 1089-1095, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-36040238

RESUMEN

The abscopal effect is defined as the systemic regression of distant neoplastic lesions induced by localized treatment. Although the first case reports date back to the beginning of the twentieth century, it remains a very rare event. In recent years, research and reporting on the subject has increased thanks to the development of new immune-checkpoint inhibitors (ICIs) and stereotactic body radiotherapy, as a consequence of molecular and clinical synergism. This work describes an extremely particular presentation of metastatic laryngeal cancer, with mediastinal abdominal nodes and bone progressive disease after PD-1 inhibitor failure, which resulted in reductions of bone pain and abdominal and thoracic lymphadenopathies and an improvement in clinical conditions after treatment with concurrent palliative radiotherapy on the bulky mediastinal node and ICI beyond progression, configuring an important abscopal response.


Laryngeal carcinoma is the most common cancer site of the aerodigestive tract and accounts for 25­30% of all head and neck cancer cases. Multimodality treatment (chemotherapy plus surgery and radiotherapy) is pivotal in localized or locally advanced disease, while immunotherapy is reserved for relapsed and metastatic settings. Nivolumab resulted in median overall survival of 7.5 months, progression-free survival of 2.0 months and an estimated 1-year survival rate of 36%; however, the response rate is very poor, at about 14%. Integrating immunotherapy with radiotherapy may prolong the duration of response and enhance efficacy.


Asunto(s)
Neoplasias Laríngeas , Radiocirugia , Humanos , Inmunoterapia/métodos , Neoplasias Laríngeas/tratamiento farmacológico , Neoplasias Laríngeas/radioterapia , Ganglios Linfáticos/patología , Nivolumab/uso terapéutico , Radiocirugia/métodos
19.
Am J Transplant ; 11(3): 619-22, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21342451

RESUMEN

Transplant recipients are encouraged to write anonymous thank-you letters to the donor family. We prospectively explored heart transplant recipients' embodied responses to the 'obligation' to write a thank-you letter using audio/video-taped open-ended interviews (N = 27). Fifteen of the 19 participants, who wrote letters to the donor family, expressed or visually revealed significant distress about issues such as the obligation to write anonymously and the inadequacy of the 'thank-you'. Writing the thank-you letter is not a neutral experience for heart transplant recipients. Rethinking the obligatory practice regarding the thank-you letter and developing the necessary support for the recipient through this process is necessary.


Asunto(s)
Correspondencia como Asunto , Familia/psicología , Trasplante de Corazón/psicología , Donantes de Tejidos/psicología , Adolescente , Adulto , Anciano , Comunicación , Estudios Transversales , Retroalimentación Psicológica , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Adulto Joven
20.
J Gen Virol ; 92(Pt 2): 412-20, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20965982

RESUMEN

Human adenoviruses (HAdVs) are common pathogens associated with a variety of clinical manifestations. Although most infections are self-limiting, HAdVs can cause severe or lethal infections in immunocompromised as well as in healthy individuals. Several HAdVs have recently been characterized as emerging pathogens. In Italy, epidemiological, and especially molecular epidemiological, information on this pathogen is scarce. This study describes the characterization by cell culture, PCR and phylogenetic analysis of HAdV strains originating from a small collection of clinical samples gathered between 2008 and 2009. The distribution of different HAdV species was studied and the possible presence of newly emerging types was ascertained. A broad-range primer pair was used, targeting a portion of the hexon gene, in combination with species-specific primer pairs targeting a portion of the fiber gene. Human and animal reference AdV strains were included in the study. The broad-range assay identified all HAdV strains (study and reference samples), as well as three out of four animal AdV reference strains. Seven different types belonging to three HAdV species (B, C and F) were identified in the study samples. Species C was by far the most frequent. Two co-infections were detected, each with two serotypes within species C (types 1/2 and 2/6). The combined use of these two PCR assays--allowing not only the identification of known types but also, potentially, the discovery of newly emerging ones--can provide valuable epidemiological information on the spread of HAdVs.


Asunto(s)
Infecciones por Adenovirus Humanos/virología , Adenovirus Humanos/clasificación , Adenovirus Humanos/genética , Proteínas de la Cápside/genética , Proteínas de la Cápside/metabolismo , Regulación Viral de la Expresión Génica/fisiología , Variación Genética , Humanos , Datos de Secuencia Molecular , Filogenia , Especificidad de la Especie
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