A comprehensive overview of radioguided surgery using gamma detection probe technology

The concept of radioguided surgery, which was first developed some 60 years ago, involves the use of a radiation detection probe system for the intraoperative detection of radionuclides. The use of gamma detection probe technology in radioguided surgery has tremendously expanded and has evolved into what is now considered an established discipline within the practice of surgery, revolutionizing the surgical management of many malignancies, including breast cancer, melanoma, and colorectal cancer, as well as the surgical management of parathyroid disease. The impact of radioguided surgery on the surgical management of cancer patients includes providing vital and real-time information to the surgeon regarding the location and extent of disease, as well as regarding the assessment of surgical resection margins. Additionally, it has allowed the surgeon to minimize the surgical invasiveness of many diagnostic and therapeutic procedures, while still maintaining maximum benefit to the cancer patient. In the current review, we have attempted to comprehensively evaluate the history, technical aspects, and clinical applications of radioguided surgery using gamma detection probe technology

Community analysis of a denitrifying reactor treating landfill leachate

International audienc

Evolution of the bacterial community during granules formation in denitrifying reactors followed by molecular, culture-independent techniques

12 ref.International audienc

Comamonas nitrativorans sp. nov., a novel denitrifier isolated from a denitrifying reactor treating landfill leachate

International audienc

Evaluation of the denitrifying microbiota of anoxic reactors

International audienc

Factores relacionados con la respuesta inadecuada al tratamiento osteoformador (teriparatida/PTH 1–84) en pacientes con osteoporosis severa. Resultados preliminares

El objetivo de este estudio ha sido analizar la evolución de la masa ósea a largo plazo tras tratamiento osteoformador (teriparatida o PTH 1-84) en pacientes con osteoporosis severa, y determinar la frecuencia y los factores relacionados con una respuesta inadecuada (RI) al tratamiento. Métodos: Se incluyeron 49 pacientes (46 mujeres:3 hombres) con una edad media de 69,5±11,1 años, tratados con teriparatida (41) o PTH1-84 (8) durante 18/24 meses (84% tenían fracturas vertebrales y 84% habían recibido tratamiento previamente). Se analizaron: factores de riesgo y causa de osteoporosis, fracturas y tratamiento antiosteoporótico previo. Se valoraron los marcadores de recambio óseo (MRO), los niveles de 25-OH vitamina D (25OHD) basal y a los 3, 6, 12 y 18/24 meses, radiografías de columna dorso-lumbar y densitometría ósea (DMO) previa, a los 12 y 18/24 meses. Se definió RI cuando el cambio de DMO lumbar era <3% a los 18/24 meses. Resultados: 29% de los pacientes presentaron RI al tratamiento. No se observaron diferencias en la edad, DMO basal, valores de 25OHD y/o MRO entre los pacientes con y sin RI. El 92% de pacientes con RI había seguido tratamiento previo con bisfosfonatos (vs. el 79% de los pacientes sin RI, p=0,34) durante 7±4,8 años (vs. 4,9±4,2 años, p=0,19). No se observaron diferencias significativas en la evolución de los MRO tras iniciar el tratamiento entre ambos grupos de pacientes. Conclusión: El 29% de los pacientes con osteoporosis grave presenta una RI al tratamiento osteoformador. Aunque no se han identificado factores predictores de este tipo de respuesta, es posible que el tratamiento prolongado previo con bisfosfonatos pueda estar relacionado con este hallazgo

Distinct clustering of symptomatic burden among myeloproliferative neoplasm patients: retrospective assessment in 1470 patients

Symptom burden in myeloproliferative neoplasms (MPNs) is heterogeneous even among patients within the same MPN diagnosis. Using cluster analysis from prospectively gathered symptom burden data in 1470 international patients with essential thrombocythemia (ET), polycythemia vera (PV), or myelofibrosis (MF), we assessed for the presence of clusters and relationship to disease features and prognosis. In MF (4 clusters identified), clusters significantly differed by Dynamic International Prognostic Scoring System (DIPSS) risk (P < .001), leukopenia (P = .009), thrombocytopenia (P < .001), and spleen size (P = .02). Although an association existed between clusters and DIPSS risk, high symptom burden was noted in some low and intermediate-1-risk MF patients. In PV (5 clusters identified), total symptom score increased across clusters (P < .001), but clusters did not significantly differ by PV risk or the risk assessment variable of age. Among ET patients (5 clusters identified), clusters differed by gender (P = .04), anemia (P = .01), and prior hemorrhage (P = .047). Total symptom score increased across clusters (P < .001), but clusters did not significantly differ by International Prognostic Score for ET risk including the risk assessment variables. Significant symptom heterogeneity exists within each MPN subtype, sometimes independent of disease features or prognosis