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1.
Sci Rep ; 14(1): 14335, 2024 06 21.
Artigo em Inglês | MEDLINE | ID: mdl-38906892

RESUMO

Reintroduction efforts are increasingly used to mitigate biodiversity losses, but are frequently challenged by inadequate planning and uncertainty. High quality information about population status and threats can be used to prioritize reintroduction and restoration efforts and can transform ad hoc approaches into opportunities for improving conservation outcomes at a landscape scale. We conducted comprehensive environmental DNA (eDNA) and visual encounter surveys to determine the distribution of native and non-native aquatic species in two high-priority watersheds to address key uncertainties-such as the distribution of threats and the status of existing populations-inherent in restoration planning. We then used these occurrence data to develop a menu of potential conservation actions and a decision framework to benefit an endangered vertebrate (foothill yellow-legged frog, Rana boylii) in dynamic stream systems. Our framework combines the strengths of multiple methods, allowing managers and conservation scientists to incorporate conservation science and site-specific knowledge into the planning process to increase the likelihood of achieving conservation goals.


Assuntos
Conservação dos Recursos Naturais , DNA Ambiental , Rios , Animais , Conservação dos Recursos Naturais/métodos , DNA Ambiental/análise , Biodiversidade , Espécies em Perigo de Extinção , Ecossistema , Ranidae/genética
2.
Actas urol. esp ; 48(2): 140-149, mar. 2024. tab, ilus, graf
Artigo em Espanhol | IBECS | ID: ibc-231446

RESUMO

Objetivo Evaluar el valor del antígeno prostático específico (PSA) en la predicción de los resultados de la resonancia magnética multiparamétrica (RMmp) en pacientes con cáncer de próstata (CaP) de alto (puntuación de Gleason≥8, pT≥3, pN1) y bajo grado (puntuación de Gleason<8, pT<3, pN0). Materiales y métodos Ciento ochenta y ocho pacientes se sometieron a una RMmp de 1,5-T después de la prostatectomía radical y antes de la radioterapia. Los pacientes se dividieron en 2 grupos: el grupo A incluía pacientes con recidiva bioquímica (RB) y el grupo B pacientes sin RB pero con alto riesgo de recidiva local. Teniendo en cuenta la puntuación de Gleason, pT y pN como variables de agrupación independientes, se realizaron análisis ROC de los niveles de PSA en el momento del diagnóstico del CaP primario y antes de la radioterapia con el fin de identificar el punto de corte óptimo para predecir el resultado de la RMmp. Resultados En los grupos A y B, el área bajo la curva del PSA antes de la radioterapia fue superior a la del PSA en el momento del diagnóstico del CaP, en tumores de bajo y alto grado. Para los tumores de bajo grado, la mejor área bajo la curva fue de 0,646 y 0,685 en el grupo A y B, respectivamente; para los tumores de alto grado, la mejor área bajo la curva fue de 0,705 y 1 en el grupo A y B, respectivamente. Para los tumores de bajo grado, el punto de corte óptimo del PSA fue de 0,565-0,58ng/ml en el grupo A (sensibilidad y especificidad: 70,5% y 66%), y de 0,11-0,13ng/ml en el B (sensibilidad y especificidad: 62,5% y 84,6%). Para los tumores de alto grado, el punto de corte de PSA óptimo fue de 0,265-0,305ng/ml en el grupo A (sensibilidad y especificidad: 95% y 42,1%), y de 0,13-0,15ng/ml en el grupo B (sensibilidad y especificidad: 100%). Conclusión La RMmp se debe realizar como herramienta diagnóstica complementaria siempre que se detecte una RB, especialmente en el CaP de alto grado... (AU)


Objective To evaluate prostate-specific antigen (PSA) value in multiparametric magnetic resonance imagin (mp-MRI) results prediction, analyzing patients with high (Gleason Score ≥8, pT≥3, pN1) and low grade (Gleason Score <8, pT<3, pN0) prostate cancer (PCa). Materials and methods One hundred eighty-eight patients underwent 1.5-T mp-MRI after radical prostatectomy and before radiotherapy. They were divided into 2 groups: A and B, for patients with biochemical recurrence (BCR) and without BCR but with high local recurrence risk. Considering Gleason Score, pT and pN as independent grouping variables, ROC analyses of PSA levels at primary PCa diagnosis and PSA before radiotherapy were performed in order to identify the optimal cut-off to predict mp-MRI result. Results Group A and B showed higher area under the curve for PSA before radiotherapy than PSA at PCa diagnosis, in low and high grade tumors. For low grade tumors the best area under the curve was 0.646 and 0.685 in group A and B; for high grade the best area under the curve was 0.705 and 1 in group A and B, respectively. For low grade tumors the best PSA cut-off was 0.565-0.58ng/ml in group A (sensitivity, specificity: 70.5%, 66%), and 0.11-0.13ng/ml in B (sensitivity, specificity: 62.5%, 84.6%). For high grade tumors, the best PSA cut-off obtained was 0.265-0.305ng/ml in group A (sensitivity, specificity: 95%, 42.1%), and 0.13-0.15ng/ml in B (sensitivity, specificity: 100%). Conclusion Mp-MRI should be performed as added diagnostic tool always when a BCR is detected, especially in high grade PCa. In patients without BCR, mp-MRI results, although poorly related to pathological stadiation, still have a good diagnostic performance, mostly when PSA>0.1-0.15ng/ml. (AU)


Assuntos
Humanos , Pessoa de Meia-Idade , Idoso , Antígeno Prostático Específico/análise , Neoplasias da Próstata , Recidiva Local de Neoplasia , Estudos Retrospectivos
3.
Actas Urol Esp (Engl Ed) ; 48(2): 140-149, 2024 Mar.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-37981171

RESUMO

OBJECTIVE: To evaluate PSA value in mp-MRI results prediction, analyzing patients with high (GS≥8, pT≥3, pN1) and low grade (GS<8, pT<3, pN0) Prostate Cancer (PCa). MATERIALS AND METHODS: One hundred eighty-eight patients underwent 1.5-Tmp-MRI after Radical Prostatectomy (RP) and before Radiotherapy (RT). They were divided into 2 groups: A and B, for patients with biochemical recurrence (BCR) and without BCR but with high local recurrence risk. Considering Gleason Score (GS), pT and pN as independent grouping variables, ROC analyses of PSA levels at primary PCa diagnosis and PSA before RT were performed in order to identify the optimal cut-off to predict mp-MRI result. RESULTS: Group A and B showed higher AUC for PSA before RT than PSA at PCa diagnosis, in low and high grade tumors. For low grade tumors the best AUC was 0.646 and 0.685 in group A and B; for high grade the best AUC was 0.705 and 1 in group A and B, respectively. For low grade tumors the best PSA cut-off was 0.565-0.58ng/mL in group A (sensitivity, specificity: 70.5%, 66%), and 0.11-0.13ng/mL in B (sensitivity, specificity: 62.5%, 84.6%). For high grade tumors, the best PSA cut-off obtained was 0.265-0.305ng/mL in group A (sensitivity, specificity: 95%, 42.1%), and 0.13-0.15ng/mL in B (sensitivity, specificity: 100%). CONCLUSION: Mp-MRI should be performed as added diagnostic tool always when a BCR is detected, especially in high grade PCa. In patients without BCR, mp-MRI results, although poorly related to pathological stadiation, still have a good diagnostic performance, mostly when PSA>0.1-0.15ng/mL.


Assuntos
Imageamento por Ressonância Magnética Multiparamétrica , Neoplasias da Próstata , Masculino , Humanos , Recidiva Local de Neoplasia/diagnóstico por imagem , Recidiva Local de Neoplasia/cirurgia , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/radioterapia , Neoplasias da Próstata/cirurgia , Próstata/patologia , Prostatectomia/métodos
4.
Actas Urol Esp (Engl Ed) ; 47(2): 104-110, 2023 03.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-37078845

RESUMO

OBJECTIVE: The aim of our study is to correlate the CT adipose tissue distribution and recurrence risk of Prostatic Cancer (PCa) after Radical Prostatectomy (RP). Furthermore, we evaluated the association of adipose tissue and PCa aggressiveness. MATERIALS AND METHODS: We identified two groups of patients based on presence (group A) and absence (group B or control group) of Bio-chemical Recurrence (BCR) after RP. A semi-automatic function able to recognize the typical attenuation values of adipose tissue was used for sub-cutaneous (SCAT), visceral (VAT), total (TAT) and periprostatic (PPAT) adipose tissues. For both groups of patients, a descriptive analysis of continuous variables and categorical variables was performed. RESULTS: After comparing between groups, a statistically significant difference was found for VAT (p<0.001) and for VAT/TAT ratio (p=0.013). No statistically significant correlation was found for PPAT and SCAT, even if higher values were found in patients with high grade tumors. CONCLUSION: This study confirms visceral adipose tissue as a quantitative imaging parameter related to oncological risk of PCa recurrence development, and the role of abdominal fat distribution measured with CT before RP as an important tool to predict the PCa recurrence risk, particularly in patients with high grade tumors.


Assuntos
Recidiva Local de Neoplasia , Neoplasias da Próstata , Masculino , Humanos , Distribuição Tecidual , Recidiva Local de Neoplasia/diagnóstico por imagem , Recidiva Local de Neoplasia/epidemiologia , Próstata/patologia , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/cirurgia , Neoplasias da Próstata/patologia , Prostatectomia
5.
Actas urol. esp ; 47(2): 104-110, mar. 2023. ilus, tab, graf
Artigo em Espanhol | IBECS | ID: ibc-217261

RESUMO

Objetivo El objetivo de nuestro estudio es correlacionar la distribución del tejido adiposo en la TC y el riesgo de recurrencia del cáncer de próstata (CaP) después de la prostatectomía radical (PR). Además, evaluamos la asociación del tejido adiposo y la agresividad del CaP. Materiales y métodos Identificamos dos grupos de pacientes en función de la presencia (grupoA) y la ausencia (grupoB o grupo de control) de recidiva bioquímica (RBQ) tras la PR. Se utilizó una función semiautomática capaz de reconocer los valores de atenuación típicos del tejido adiposo para el tejido adiposo subcutáneo (TAS), visceral (TAV), total (TAT) y periprostático (TAP). Para ambos grupos de pacientes se realizó un análisis descriptivo de las variables continuas y categóricas. Resultados Al comparar los dos grupos, hubo una diferencia estadísticamente significativa para el TAV (p<0,001) y para la proporción TAV/TAT (p=0,013). No se encontró una correlación estadísticamente significativa para el TAP y el TAS, aunque se encontraron valores más altos en los pacientes con tumores de grado alto. Conclusión Este estudio confirma que el tejido adiposo visceral es un parámetro de imagen cuantitativo relacionado con el riesgo oncológico de desarrollo de recidiva del CaP, y el papel de la distribución de la grasa abdominal en la TC antes de la PR como una herramienta importante en la predicción del riesgo de recidiva del CaP, particularmente en pacientes con tumores de alto grado (AU)


Objective The aim of our study is to correlate the CT adipose tissue distribution and recurrence risk of prostatic cancer (PCa) after radical prostatectomy (RP). Furthermore, we evaluated the association of adipose tissue and PCa aggressiveness. Materials and methods We identified two groups of patients based on presence (groupA) and absence (groupB or control group) of bio-chemical recurrence (BCR) after RP. A semi-automatic function able to recognize the typical attenuation values of adipose tissue was used for subcutaneous (SCAT), visceral (VAT), total (TAT) and periprostatic (PPAT) adipose tissues. For both groups of patients, a descriptive analysis of continuous variables and categorical variables was performed. Results After comparing between groups, a statistically significant difference was found for VAT (P<.001) and for VAT/TAT ratio (P=.013). No statistically significant correlation was found for PPAT and SCAT, even if higher values were found in patients with high grade tumors. Conclusion This study confirms visceral adipose tissue as a quantitative imaging parameter related to oncological risk of PCa recurrence development, and the role of abdominal fat distribution measured with CT before RP as an important tool to predict the PCa recurrence risk, particularly in patients with high grade tumors (AU)


Assuntos
Humanos , Masculino , Tecido Adiposo , Recidiva Local de Neoplasia , Neoplasias da Próstata/cirurgia , Prostatectomia/métodos , Estudos Retrospectivos
6.
Actas urol. esp ; 46(7): 397-406, sept. 2022. ilus, tab, graf
Artigo em Espanhol | IBECS | ID: ibc-208691

RESUMO

Objetivo Evaluar la precisión diagnóstica de la resonancia magnética multiparamétrica (RMmp) en la detección de la recidiva local del cáncer de próstata (CaP) después de la prostatectomía radical (PR) y antes de la radioterapia (RT). Materiales y métodos Un total de 188 pacientes se sometieron a una RMmp de 1,5T después de la PR y antes de la RT. Los pacientes se dividieron en 2 grupos: con recidiva bioquímica (grupo A) y sin recidiva bioquímica, pero con alto riesgo de recidiva local (grupo B). Las variables continuas se compararon entre los 2 grupos mediante la prueba t de Student; las variables categóricas se analizaron mediante chi-cuadrado de Pearson. El análisis ROC se realizó considerando como variables de agrupación el PSA antes de la RT, el grado ISUP, el pT y el pN. Resultados La recidiva del CaP (reducción de los niveles de PSA después de la RT) fue del 89,8% en el grupo A y del 80,3% en el grupo B. Al comparar los pacientes con y sin recidiva del CaP, hubo una diferencia significativa en los valores de PSA antes de la RT para el grupo A, y en los valores de PSA antes y después de la RT para el grupo B. En el grupo A hubo una correlación significativa entre el PSA antes de la RT y el diámetro de la recidiva, y entre el PSA antes de la RT y el tiempo transcurrido hasta la recidiva. La precisión diagnóstica de la RMmp en la detección de la recidiva local del CaP tras la RT es del 62,2% en el grupo A y del 38% en el grupo B. La imagen potenciada en difusión es la secuencia de RM más específica y la perfusión dinámica con contraste la más sensible. Para el PSA=0,5ng/ml, el AUC disminuye, mientras que la sensibilidad y la precisión aumentan para cada secuencia de RM. Para el PSA=0,9ng/ml, el AUC de la perfusión dinámica con contraste aumenta significativamente (AU)


Purpose Assess multiparametric-MRI (mp-MRI) diagnostic accuracy in the detection of local recurrence of prostate cancer (PCa) after radical prostatectomy (PR) and before radiation therapy (RT). Materials and methods A total of 188 patients underwent 1.5-T mp-MRI after RP before RT. Patients were divided into 2 groups: with biochemical recurrence (group A) and without but with high risk of local recurrence (group B). Continuous variables were compared between 2 groups using Student-t test; categoric variables were analyzed using Pearson chi-square. ROC analysis was performed considering PSA before RT, ISUP, pT and pN as grouping variables. Results PCa recurrence (reduction of PSA levels after RT) was 89.8% in group A and 80.3% in group B. Comparing patients with and without PCa recurrence, there was a significant difference in PSA values before RT for group A and for PSA values before RT and after RT for group B. In group A, there was a significant correlation between PSA before RT and diameter of recurrence and between PSA before RT and time spent before recurrence. The mp-MRI diagnostic accuracy in detecting PCa local recurrence after RP is of 62.2% in group A and 38% in group B. Diffusion weighted imaging is the most specific MRI-sequence and dynamic contrast enhanced the most sensitive. For PSA=0.5ng/ml, the AUC decreases while sensitivity and accuracy increase for each MRI-sequence. For PSA=0.9ng/ml, dynamic contrast enhanced-AUC increases significantly. Conclusion mp-MRI should always be performed before RT when a recurrence is suspected. New scenarios can be opened considering the role of diffusion weighted imaging for PSA≤0.5ng/ml (AU)


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Recidiva Local de Neoplasia/diagnóstico por imagem , Imageamento por Ressonância Magnética , Neoplasias da Próstata , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/radioterapia , Neoplasias da Próstata/cirurgia , Estudos Retrospectivos , Antígeno Prostático Específico , Prostatectomia , Curva ROC
7.
Actas Urol Esp (Engl Ed) ; 46(7): 397-406, 2022 09.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-35778338

RESUMO

PURPOSE: Assess multiparametric-MRI (mp-MRI) diagnostic accuracy in the detection of local recurrence of Prostate Cancer (PCa) after Radical Prostatectomy (PR) and before Radiation Therapy (RT). MATERIALS AND METHODS: A total of 188 patients underwent 1.5-T mp-MRI after RP before RT. Patients were divided into two groups: with biochemical recurrence (group A) and without but with high risk of local recurrence (group B). Continuous variables were compared between two groups using T-Student; categoric variables were analyzed using Pearson chi-square. ROC analysis was performed considering PSA before RT, ISUP, pT and pN as grouping variables. RESULTS: PCa recurrence (reduction of PSA levels after RT) was 89.8% in the group A and 80.3% in the group B. Comparing patients with and without PCa recurrence, there was a significant difference in PSA values before RT for group A and for PSA values before RT and after RT for group B. In group A, there was a significant correlation between PSA before RT and diameter of recurrence and between PSA before RT and time spent before recurrence. The mp-MRI diagnostic accuracy in detecting PCa local recurrence after RP is of 62.2% in group A and 38% in group B. DWI is the most specific MRI-sequence and DCE the most sensitive. For PSA = 0.5 ng/ml, the AUC decreases while sensitivity and accuracy increase for each MRI-sequence. For PSA = 0.9 ng/ml, DCE-AUC increases significantly. CONCLUSION: mp-MRI should always be performed before RT when a recurrence is suspected. New scenarios can be opened considering the role of DWI for PSA ≤ 0.5 ng/ml.


Assuntos
Imageamento por Ressonância Magnética Multiparamétrica , Neoplasias da Próstata , Humanos , Masculino , Recidiva Local de Neoplasia/diagnóstico por imagem , Recidiva Local de Neoplasia/cirurgia , Antígeno Prostático Específico , Prostatectomia , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/radioterapia , Neoplasias da Próstata/cirurgia , Estudos Retrospectivos
8.
Cardiovasc Intervent Radiol ; 43(7): 1091-1094, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32415331

RESUMO

A 61-year-old female underwent a right radical nephrectomy and a left nephron sparing surgery in 2014 due to renal cell carcinoma. A renal cell carcinoma local recurrence, 28 mm in size, centrally located in the left kidney was treated using cryoablation in 2016. In November 2018, computed tomography (CT) scan showed three nodules (maximum size 15 × 11 mm) in the left kidney, and CT-guided needle biopsy was performed. For multifocal recurrence and the anatomical site of these three nodules, a simultaneous reversible electrochemotherapy treatment was performed in April 2019. At 6-month CT control, no evidence of residual disease was found. Electrochemotherapy could be used to treat locoregional renal cell carcinoma recurrence when other ablative techniques are not suitable. LEVEL OF EVIDENCE: Level 4, Case Report.


Assuntos
Carcinoma de Células Renais/tratamento farmacológico , Eletroquimioterapia/métodos , Neoplasias Renais/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Tomografia Computadorizada por Raios X/métodos , Carcinoma de Células Renais/diagnóstico por imagem , Feminino , Humanos , Neoplasias Renais/diagnóstico por imagem , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/diagnóstico por imagem , Rim Único/diagnóstico por imagem
9.
Eur J Neurol ; 25(10): 1270-1275, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29851435

RESUMO

BACKGROUND AND PURPOSE: There is debate as to whether the apparent rebound after fingolimod discontinuation is related to the discontinuation itself or whether it is due to the natural course of highly active multiple sclerosis (MS). Our aim was to survey the prevalence of severe reactivation and rebound after discontinuation of fingolimod in a cohort of Italian patients with MS. METHODS: Patients with relapsing-remitting MS who were treated with fingolimod for at least 6 months and who stopped treatment for reasons that were unrelated to inefficacy were included in the analysis. RESULTS: A total of 100 patients who had discontinued fingolimod were included in the study. Fourteen patients (14%) had a relapse within 3 months after fingolimod discontinuation, and an additional 12 (12%) had a relapse within 6 months. According to this study's criteria, 10 patients (10%) had a severe reactivation. Amongst these patients, five (5%) had a reactivation that was considered to be a rebound. CONCLUSIONS: The present study showed that more than 26% of patients are at risk of having a relapse within 6 months after fingolimod discontinuation. Nevertheless, the risk of severe reactivations and rebound is lower than has been previously described.


Assuntos
Cloridrato de Fingolimode/uso terapêutico , Imunossupressores/uso terapêutico , Esclerose Múltipla Recidivante-Remitente/tratamento farmacológico , Adolescente , Adulto , Estudos de Coortes , Feminino , Humanos , Itália , Imageamento por Ressonância Magnética , Masculino , Esclerose Múltipla Recidivante-Remitente/diagnóstico por imagem , Recidiva , Suspensão de Tratamento , Adulto Jovem
10.
Med Oncol ; 34(5): 96, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28417355

RESUMO

The LUMIRA trial evaluated the effectiveness of radiofrequency (RFA) and microwave ablation (MWA) in lung tumours ablation and defining more precisely their fields of application. It is a controlled prospective multi-centre random trial with 1:1 randomization. Fifty-two patients in stage IV disease (15 females and 37 males, mean age 69 y.o., range 40-87) were included. We randomized the patients in two different subgroups: MWA group and RFA group. For each group, we evaluated the technical and clinical success, the overall survival and complication rate. Inter-group difference was compared using Chi-square test or Fisher's exact test for categorical variables and one-way ANOVA test for continuous variables. For RFA group, there was a significant reduction in tumour size only between 6 and 12 months (p value = 0.0014). For MWA group, there was a significant reduction in tumour size between 6 and 12 months (p value = 0.0003) and between pre-therapy and 12 months (p value = 0.0215). There were not significant differences between the two groups in terms of survival time (p value = 0.883), while the pain level in MWA group was significantly less than in RFA group (1.79 < 3.25, p value = 0.0043). In conclusion, our trial confirms RFA and MWA are both excellent choices in terms of efficacy and safety in lung tumour treatments. However, when compared to RFA therapy, MWA produced a less intraprocedural pain and a significant reduction in tumour mass.


Assuntos
Ablação por Cateter/métodos , Neoplasias Pulmonares/cirurgia , Micro-Ondas/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Estudos Prospectivos
11.
Nutr Metab Cardiovasc Dis ; 26(5): 414-8, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-27089978

RESUMO

BACKGROUND AND AIMS: Gestational diabetes mellitus (GDM), is characterized by chronic, low-grade subclinical inflammation with altered production of cytokines and mediators. Recently, a new protein acting as a "danger signal", high mobility group box 1 (HMGB1), that migrates quickly during electrophoresis, has been identified. The aim of our study was to analyze serum levels of HMGB1 in pregnant women, with or without GDM, in the third trimester of pregnancy to evaluate correlation with insulin resistance and other risk factors for GDM. METHODS AND RESULTS: Seventy five pregnant women positive to the 75 g oral glucose tolerance test (OGTT) were included in the study group and 48 pregnant women who were negative to the screening test, were randomly selected using a computer-generated randomisation table. A significant positive univariate correlation was observed between serum HMGB1 levels, HOMA-IR index, glycaemia values at OGTT and pre-pregnancy BMI. Moreover, logistic regression analysis showed that serum HMGB1 was independent linked to GDM. CONCLUSION: Our study demonstrated that HMGB1, a marker of chronic inflammation, is associated to GDM and insulin resistance level, in the third trimester of pregnancy.


Assuntos
Diabetes Gestacional/sangue , Proteína HMGB1/sangue , Mediadores da Inflamação/sangue , Adulto , Área Sob a Curva , Biomarcadores/sangue , Glicemia/metabolismo , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , Estudos Transversais , Diabetes Gestacional/diagnóstico , Diabetes Gestacional/etiologia , Feminino , Teste de Tolerância a Glucose , Humanos , Insulina/sangue , Resistência à Insulina , Modelos Logísticos , Valor Preditivo dos Testes , Gravidez , Terceiro Trimestre da Gravidez/sangue , Curva ROC , Fatores de Risco , Adulto Jovem
12.
Phys Chem Chem Phys ; 18(2): 772-80, 2016 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-26627630

RESUMO

Many recent studies on water have conjectured a complex structure composed of hydrogen bonded low- and high-density domains. In this work the structure of pure water and aqueous solutions of silica gel (TEOS) has been investigated by using delayed luminescence, which has previously shown a significant increase in aqueous salt solutions where low-density domain formation is expected. Photon emission shows an Arrhenius trend with an activation energy in water-TEOS solutions larger than in pure water and salt-water solutions. Moreover, delayed photon emission decay shows an intrinsic lifetime of about 5 µs both in solutions and in pure water that, along with secondary lifetimes induced by the presence of TEOS, could be related to the formation of different domains.

13.
Eur J Surg Oncol ; 41(12): 1699-705, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26433708

RESUMO

OBJECTIVE: The aim of the present study was to assess the temperature map and its reproducibility while applying two different MWA systems (915 MHz vs 2.45 GHz) in ex vivo porcine livers. MATERIALS AND METHODS: Fifteen fresh pig livers were treated using the two antennae at three different settings: treatment time of 10 min and power of 45 W for both systems; 4 min and 100 W for the 2.45 GHz system. Trends of temperature were recorded during all procedures by means of fiber optic-based probes located at five fixed distances from the antenna, ranging between 10 mm and 30 mm. Each trial was repeated twice to assess the reproducibility of temperature distribution. RESULTS: Temperature as function of distance from the antenna can be modeled by a decreasing exponential trend. At the same settings, temperature obtained with the 2.45 GHz system was higher than that obtained with the 915 MHz thus resulting into a wider area of ablation (diameter 17 mm vs 15 mm). Both systems showed good reproducibility in terms of temperature distribution (root mean squared difference for both systems ranged between 2.8 °C and 3.4 °C). CONCLUSIONS: When both MWA systems are applied, a decreasing exponential model can predict the temperature map. The 2.45 GHz antenna causes higher temperatures as compared to the 915 MHz thus, resulting into larger areas of ablation. Both systems showed good reproducibility although better results were achieved with the 2.45 GHz antenna.


Assuntos
Ablação por Cateter/métodos , Fígado/cirurgia , Micro-Ondas/uso terapêutico , Animais , Modelos Animais de Doenças , Hepatopatias/cirurgia , Reprodutibilidade dos Testes , Suínos , Temperatura
15.
Eur J Surg Oncol ; 41(8): 967-74, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26072701

RESUMO

Bone metastases can be treated by interventional radiologists with a minimally invasive approach. Such treatments are performed percutaneously under radiological imaging guidance. Different interventional techniques can be applied with curative or palliative intent depending on lesions and patients' status. In the whole, available interventional techniques are distinguished into "ablative" and "consolidative". Ablative techniques achieve bone tumor necrosis by dramatically increasing or decreasing intra-tumoral temperature. This option can be performed in order to alleviate pain or to eradicate the lesion. On the other hand, consolidative techniques aim at obtaining bone defect reinforcement mainly to alleviate pain and prevent pathological fractures. We herein present evidence supporting the application of each different interventional technique, as well as common strategies followed by interventional radiologists while approaching bone metastases.


Assuntos
Neoplasias Ósseas , Gerenciamento Clínico , Radiologia Intervencionista/métodos , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/secundário , Neoplasias Ósseas/terapia , Terapia Combinada , Humanos , Metástase Neoplásica , Radiografia
16.
Bone Marrow Transplant ; 50 Suppl 2: S37-9, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26039205

RESUMO

This is a report of 148 patients with hematologic malignancies who received an unmanipulated haploidentical bone marrow transplant (BMT), followed by post-transplant high-dose cyclophosphamide (PT-CY). All patients received a myeloablative conditioning consisting of thiotepa, busulfan, fludarabine (n=92) or TBI, fludarabine (n=56). The median age was 47 years (17-74); 47 patients were in first remission (CR1), 37 in second remission (CR2) and 64 had an active disease; all patients were first grafts. The diagnosis was acute leukemia (n=75), myelodisplastic syndrome (n=24), myelofibrosis (n=16), high-grade lymphoma (n=15) and others (n=18). GVHD prophylaxis consisted in PT-CY on days +3 and +5, cyclosporine (from day 0), and mycophenolate (from day +1). The median day for neutrophil engraftment was day +18 (13-32). The cumulative incidence of grades II-IV acute GVHD was 24%, and of grades III-IV GVHD 10%. The incidence of moderate-severe chronic GVHD was 12%. With a median follow-up for the surviving patients of 313 days (100-1162), the cumulative incidence of transplant-related mortality (TRM) is 13%, and the relapse-related death is 23%. The actuarial 22 months overall survival is 77% for CR1 patients, 49% for CR2 patients and 38% for patients grafted in relapse (P<0.001). Major causes of death were relapse (22%), GVHD (2%) and infections (6%). We confirm our initial results, suggesting that a myeloablative conditioning regimen followed by unmanipulated haploidentical BMT with PT-CY, results in a low risk of acute and chronic GVHD and encouraging rates of TRM and overall survival, also for patients with active disease at the time of transplant.


Assuntos
Transplante de Medula Óssea , Ciclofosfamida/administração & dosagem , Sobrevivência de Enxerto/efeitos dos fármacos , Doença Enxerto-Hospedeiro , Neoplasias Hematológicas , Condicionamento Pré-Transplante , Adolescente , Adulto , Idoso , Aloenxertos , Intervalo Livre de Doença , Feminino , Seguimentos , Doença Enxerto-Hospedeiro/mortalidade , Doença Enxerto-Hospedeiro/prevenção & controle , Neoplasias Hematológicas/mortalidade , Neoplasias Hematológicas/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Taxa de Sobrevida
17.
Gynecol Endocrinol ; 31(2): 113-5, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25356847

RESUMO

Obesity is associated with an increased risk of an adverse pregnancy outcome. The aim of this study was to analyze the serum levels of high mobility group protein B1 (HMGB1) in obese pregnant women, to assess the role of this protein in the pathogenesis of this disease and to evaluate its possible function as a diagnostic marker for obesity-related complications in obese women. Study participants were randomly selected, from a cohort of pregnant women afferent to our department. A total of 120 women were enrolled in this study: 60 pregnant women had normal body mass index (BMI) and 60 women resulted obese. Pre-pregnancy BMI, weight increase and HMGB1 levels were evaluated for each pregnant woman enrolled. Matching serum HMGB1 levels in two groups, our data evidenced higher levels in the obese women, with a statistically significant difference (p = 0.0023). A significant positive univariate correlation was observed between serum HMGB1 levels and BMI in obese women. HMGB1 serum levels may therefore represent a predictive marker of disease in pregnant women (r = 20.9 and p = 0.0001). Further studies are needed in order to validate the role of this cytokine, with the aim of making it possible to use in clinical practice not only for diagnostic purposes, but especially for the early recognition of complications related to it.


Assuntos
Biomarcadores/sangue , Proteína HMGB1/sangue , Obesidade/sangue , Obesidade/complicações , Complicações na Gravidez/sangue , Adulto , Índice de Massa Corporal , Feminino , Humanos , Gravidez , Complicações na Gravidez/diagnóstico , Estudos Retrospectivos , Aumento de Peso/fisiologia , Adulto Jovem
18.
Bone Marrow Transplant ; 50(1): 56-61, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25310304

RESUMO

Forty-two patients relapsing after an unmanipulated haploidentical BM transplant and post-transplant CY (PT-CY), were given 108 DLI, with median interval from transplant of 266 days (range, 67-1372). DLI were given at escalating doses, expressed as CD3+ cells/kg, without GVHD prophylaxis, and ranged from 1 × 10(3) to 1 × 10(7) cells/kg (median 5 × 10(5) cells/kg). The average number of DLI per patient was 2.6 (range, 1-6). The diagnosis was leukemias (n=32) grafted with a myeloablative regimen and Hodgkin's disease (n=10), grafted with a nonmyeloablative regimen. Leukemic patients with molecular relapse (n=20), received DLI alone (n=17) or in association with azacytidine (n=3); leukemic patients with hematologic relapse (n=12) received chemotherapy followed by DLI (n=11) or DLI alone (n=1); Hodgkin patients received DLI following 1-3 courses of chemotherapy. In these three groups the incidence of acute GVHD II-III was 15%, 17% and 10%; response rate was 45%, 33% and 70%; 2-year actuarial survival was 43%, 19% and 80% respectively. This study confirms that escalating doses of DLI can be given in the haploidentical setting with PT-CY, with a relatively low risk of acute GVHD. Response rates and survival are dependent on the underlying disease.


Assuntos
Antimetabólitos Antineoplásicos/administração & dosagem , Azacitidina/administração & dosagem , Transplante de Medula Óssea , Doença Enxerto-Hospedeiro/prevenção & controle , Doença de Hodgkin , Leucemia , Transfusão de Linfócitos , Adolescente , Adulto , Idoso , Aloenxertos , Intervalo Livre de Doença , Doença Enxerto-Hospedeiro/mortalidade , Doença de Hodgkin/mortalidade , Doença de Hodgkin/prevenção & controle , Humanos , Leucemia/mortalidade , Leucemia/prevenção & controle , Doadores Vivos , Pessoa de Meia-Idade , Recidiva , Taxa de Sobrevida , Fatores de Tempo
20.
Int J Comput Assist Radiol Surg ; 8(5): 837-48, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23377707

RESUMO

PURPOSE: Percutaneous lung biopsies (PLBs) performed for the evaluation of pulmonary masses require image guidance to avoid critical structures. A new CT navigation system (SIRIO, "Sistema robotizzato assistito per il puntamento intraoperatorio") for PLBs was validated. METHODS: The local Institutional Review Board approved this retrospective study. Image-guided PLBs in 197 patients were performed with a CT navigation system (SIRIO). The procedures were reviewed based on the number of CT scans, patients' radiation exposure and procedural time recorded. Comparison was performed with a group of 72 patients undergoing standard CT-guided PLBs. Sensitivity, specificity and overall diagnostic accuracy were assessed in both groups. RESULTS: SIRIO-guided PLBs showed a significant reduction in procedure time, number of required CT scans and the radiation dose administered to patients ([Formula: see text]). In terms of diagnostic accuracy, SIRIO proved to be more accurate for small-sized lesions ([Formula: see text]20 mm) than standard CT-guidance. CONCLUSION: SIRIO proved to be a reliable and effective tool when performing CT-guided PLBs and was especially useful for sampling small ([Formula: see text]20 mm) lesions.


Assuntos
Fluoroscopia/métodos , Biópsia Guiada por Imagem/métodos , Pneumopatias/diagnóstico , Neoplasias Pulmonares/diagnóstico , Radiografia Intervencionista/instrumentação , Tomografia Computadorizada por Raios X/instrumentação , Interface Usuário-Computador , Idoso , Desenho de Equipamento , Feminino , Humanos , Pulmão/diagnóstico por imagem , Pulmão/patologia , Masculino , Pessoa de Meia-Idade , Curva ROC , Reprodutibilidade dos Testes , Estudos Retrospectivos
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