188 research outputs found
Aplicación de algunos ioduros de alcohilo a la separación de selenio y teluro
No full textFil: D'Agostino, Aída. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil: Massani, Zulema M.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Active polymers containing Lactobacillus curvatus CRL705 bacteriocins: effectiveness assessment in Wieners
No full textFil: Blanco Massani, Mariana R. Instituto Nacional de Tecnología Industrial. INTI-Plásticos; ArgentinaFil: Eisenberg, Patricia. Instituto Nacional de Tecnología Industrial. INTI-Plásticos; ArgentinaFil: Vignolo, Graciela. Instituto Nacional de Tecnología Industrial. INTI-Plásticos; ArgentinaFil: Molina, V. Instituto Nacional de Tecnología Industrial. INTI-Plásticos; ArgentinaFil: Sanchez, M. Instituto Nacional de Tecnología Industrial. INTI-Plásticos; ArgentinaFil: Renaud, V. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Referencia para Lactobacilos; Argentin
Clear cell sarcoma of the ileum: report of a case and review of the literature.
No full textbstract
Introduction. Clear cell sarcoma of the gastrointestinal tract (CCS-GI) is an extremely rare and aggressive tumor, which often mimics other neoplastic processes. Because of this feature, its real incidence may have been underestimated, especially in the past when genetic tests were less available than nowadays. To date, less then 30 cases have been described in the literature on the GI tract. Case presentation. We report the case of a 69-year-old woman who presented with active rectal bleeding. After a negative colonoscopy, the patient underwent a video-capsule endoscopy. The latter detected an ileal mass that was surgically resected. The microscopic appearance was consistent with a malignant mesenchymal neoplasm; immunohistochemistry was positive for S100 protein, CD56, and INI1. Fluorescence in situ hybridization showed a translocation involving the EWSR1 (Ewing sarcoma 1) gene region. All these findings were consistent with a CCS-GI. Conclusion. Herein we present a case of CCS-GI, discuss its clinical and pathological features, and review the literature on the subject. © The Author(s) 2012
LEUKAEMIA INHIBITORY FACTOR PROTECTS CHOLANGIOCARCINOMA CELLS FROM CYTOTOXICITY VIA MCL-1
No full textNeutron-diffraction of hydrogen-rich molecules under high pressure
No full textA proton and an electron form the lightest element of the periodic table:
Hydrogen. Despite the simplicity of this element and an ongoing research interest,
surprisingly little is known about its solid phases and structures of hydrogen-rich
compounds such as water, ammonia or methane. In the particular, high pressure
phases of these compounds are poorly understood.
The reason for this is of a two-fold nature; first and foremost, small, hydrogen-rich molecules have very complex phase diagrams - partially due to the quantum
nature of hydrogen - and form a vast variety of crystal structures. And secondly,
the only direct way of measuring the hydrogen positions in these crystal structures
is neutron-diffraction. While very powerful in structure determination, this
technique requires large sample volumes and, hence, the pressure range has been
limited to below 40 GPa; until recently, neutron diffraction had to rely on large-volume pressure cell such as the Paris-Edinburgh-Press.
The overall aim of this body of work was to overcome current pressure-limitations
and the concomitant limitations in data quality using single-crystals in diamond
anvil cells for neutron diffraction. This attempt has been successful and the data-reduction and correction procedure reported in this work are now being used at
the Snap beamline at Sns (Oak Ridge National Laboratory).
The original aim for the second half of this thesis was to use single-crystal neutron-diffraction to measure single-crystals of hydrogen (deuterium) and water. Due to
the ongoing pandemic caused by Covid-19 and the restrictions to travel to Sns,
this was not possible. Hence, the second half of this works tries to fill gaps in the
knowledge of the high-pressure behaviour of water-gas compounds using existing
techniques. In particular, studies on the water-nitrogen, water-ammonia and the
water-ammonia-methane systems will be presented here
Perianal Crohn's disease: is there something new?
No full textPerianal lesions are common in patients with Crohn's disease, and display
aggressive behavior in some cases. An accurate diagnosis is necessary for the
optimal management of perianal lesions. Treatment of perianal Crohn's disease
includes medical and/or surgical options. Recent discoveries in the pathogenesis
of this disease have led to advances in medical and surgical therapy with good
results. Perianal lesions in Crohn's disease remain a challenging aspect for both
gastroenterologists and surgeons and lead to a greatly impaired quality of life
for all patients affected by this disease. A multidisciplinary approach is
mandatory to obtain the best results
Near-infrared imaging with indocyanine green fluorescence for intraoperative lymphatic assessment in rectal cancer surgery: a systematic review
No full textINTRODUCTION: At present, harvesting more lymph nodes is considered more conducive to the prognosis of colorectal cancer surgery. The recent development of enhanced surgical visualization has led to the wide employment of indocyanine green (ICG) to assist minimally invasive surgery. This systematic review aims to provide a wide and critical overview of the current state of the art of ICG lymphography during rectal surgery, by focusing on the most relevant literature on this topic. EVIDENCE ACQUISITION: After validation and registration in the PROSPERO international prospective register of systematic reviews on the 5th May 2024 (ID: CRD42024539426), 8 publications have been considered relevant for the research query and have been divided into two groups: lateral pelvic lymph node dissection (LPLND) and lateral pelvic sentinel lymph node biopsy (LPSLNB). A meta-analysis has not been performed due to the low statistical significance. EVIDENCE SYNTHESIS: ICG lymphography seems to improve the number of harvested lateral pelvic lymph nodes, to reduce intraoperative blood loss and hospital length of stay during LPLND. In LPSLNB the detection rate of lateral pelvic sentinel lymph nodes ranged from 91.3% to 92%. CONCLUSIONS: ICG lymphography for fluorescence guidance for LLND is a feasible and safe technique, with promising application in terms of the number of harvested lymph nodes and post-operative outcomes improvement during rectal oncological surgery. As some of these benefits have been already suggested by the current literature, they need to be confirmed in larger and randomized clinical
Is the routinely use of Tachosil® the answer to prevent anastomotic leakage in urgent abdominal surgery?
No full textLEUKAEMIA INHIBITORY FACTOR PROTECTS CHOLANGIOCYTES FROM CYTOTOXICITY IN CHOLANGIOCARCINOMA
No full text- …
