A phase II dose‑escalation trial of perioperative desmopressin (1‑desamino‑8‑D‑arginine vasopressin) in breast cancer patients

Desmopressin (dDAVP) is a well-known peptide analog of the antidiuretic hormone vasopressin, used to prevent excessive bleeding during surgical procedures. dDAVP increases hemostatic mediators, such as the von Willebrand factor (vWF), recently considered a key element in resistance to metastasis. Studies in mouse models and veterinary trials in dogs with locally-advanced mammary tumors demonstrated that high doses of perioperative dDAVP inhibited lymph node and early blood-borne metastasis and significantly prolonged survival. We conducted a phase II dose-escalation trial in patients with breast cancer, administering a lyophilized formulation of dDAVP by intravenous infusion in saline, 30–60 min before and 24 h after surgical resection. Primary endpoints were safety and tolerability, as well as selection of the best dose for cancer surgery. Secondary endpoints included surgical bleeding, plasma levels of vWF, and circulating tumor cells (CTCs) as measured by quantitative PCR of cytokeratin-19 transcripts. Only 2 of a total of 20 patients experienced reversible adverse events, including hyponatremia (grade 4) and hypersensitivity reaction (grade 2). Reactions were adequately managed by slowing the infusion rate. A reduced intraoperative bleeding was noted with increasing doses of dDAVP. Treatment was associated with higher vWF plasma levels and a postoperative drop in CTC counts. At the highest dose level evaluated (2 μg/kg) dDAVP appeared safe when administered in two slow infusions of 1 μg/kg, before and after surgery. Clinical trials to establish the effectiveness of adjunctive perioperative dDAVP therapy are warranted. This trial is registered on www.clinicaltrials.gov (NCT01606072).Facultad de Ciencias Médica

A phase II dose-escalation trial of perioperative desmopressin (1-desamino-8-d-arginine vasopressin) in breast cancer patients

Desmopressin (dDAVP) is a well-known peptide analog of the antidiuretic hormone vasopressin, used to prevent excessive bleeding during surgical procedures. dDAVP increases hemostatic mediators, such as the von Willebrand factor (vWF), recently considered a key element in resistance to metastasis. Studies in mouse models and veterinary trials in dogs with locally-advanced mammary tumors demonstrated that high doses of perioperative dDAVP inhibited lymph node and early blood-borne metastasis and significantly prolonged survival. We conducted a phase II dose-escalation trial in patients with breast cancer, administering a lyophilized formulation of dDAVP by intravenous infusion in saline, 30–60 min before and 24 h after surgical resection. Primary endpoints were safety and tolerability, as well as selection of the best dose for cancer surgery. Secondary endpoints included surgical bleeding, plasma levels of vWF, and circulating tumor cells (CTCs) as measured by quantitative PCR of cytokeratin-19 transcripts. Only 2 of a total of 20 patients experienced reversible adverse events, including hyponatremia (grade 4) and hypersensitivity reaction (grade 2). Reactions were adequately managed by slowing the infusion rate. A reduced intraoperative bleeding was noted with increasing doses of dDAVP. Treatment was associated with higher vWF plasma levels and a postoperative drop in CTC counts. At the highest dose level evaluated (2 μg/kg) dDAVP appeared safe when administered in two slow infusions of 1 μg/kg, before and after surgery. Clinical trials to establish the effectiveness of adjunctive perioperative dDAVP therapy are warranted. This trial is registered on www.clinicaltrials.gov (NCT01606072).Fil: Weinberg, Ruth S.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Grecco, Marcelo O.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Ferro, Gimena S.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Seigelshifer, Debora Judith. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Perroni, Nancy V.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Terrier, Francisco J.. Instituto Universitario del Hospital Italiano de Buenos Aires; ArgentinaFil: Sánchez Luceros, Analía Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina. Academia Nacional de Medicina de Buenos Aires; ArgentinaFil: Maronna, Esteban. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; ArgentinaFil: Sánchez Marull, Ricardo. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; ArgentinaFil: Frahm, Isabel. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; ArgentinaFil: Guthmann, Marcelo D.. Laboratorio Elea; ArgentinaFil: Di Leo, Daniela. Laboratorio Elea; ArgentinaFil: Spitzer, Eduardo. Laboratorio Elea; ArgentinaFil: Ciccia, Graciela Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garona, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Pifano, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Torbidoni, Ana Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Gomez, Daniel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Ripoll, Giselle Vanina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Gomez, Roberto E.. Laboratorio Elea; ArgentinaFil: Demarco, Ignacio A.. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alonso, Daniel Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; Argentin

The technological transfer creates value and improve scientific production

Existe una tendencia contemporánea de las universidades a aumentar la vinculación con las sociedades que la sustentan. En este sentido, la Facultad de Farmacia y Bioquímica de la Universidad de Buenos Aires ha desarrollado, en el último lustro, un conjunto de acciones de vinculación denominado Programa de Vinculación y Transferencia Tecnológica, cuyos resultados de implementación serán evaluados en el presente trabajo.Universities have a contemporary tendency to increase their relationship with the societies that maintain them. Consequently, during the past decade the School of Pharmacy and Biochemistry of the University of Buenos Aires has developed a Vinculation and Technological Transfer Program, the results of which are evaluated hereColegio de Farmacéuticos de la Provincia de Buenos Aire

Estudios de toxicidad aguda de planta medicinales argentinas. Mediante el Bioensayo de Artemia salina Leach

No disponibl

Ethnobotany and bioactivity of medicinal plants used by an indigenus Takana group of the Peruvian Amazonia

Como resultado de un viaje etnobotánico al sudoeste de la cuenca amazónica, se colectó información sobre 50 plantas utilizadas como medicinales por los Ese'eja, un grupo de amerindios perteneciente a la familia lingüística takana que habita en la región de Madre de Dios, Perú. En este trabajo se describen las prácticas shamánicas de este pueblo, que comprenden el uso de plantas medicinales y rituales. Se relatan fragmentos del uso del "ayahuasca" en ritos de iniciación shamáhnica y curación. Se estudió la actividad biológica de diferentes extractos de aquellas plantas de mayor uso y disponibilidad. Los bioensayos empleados fueron: el bioensayo de citotoxicidad de Artemia salina, el bioensayo de inhibición del crecimiento de las raíces de los granos de trigo y el bioensayo de metil green-DNA. Se discuten los resultados obtenidos y su posible correlación con el uso etnomédico de las plantas estudiadas.Information on 50 medicinal plants used by the Ese'eja, a group of amerindians belonging to the takana linguistic family that lives in Madre de Dios, Perú, was collected during an ethnobotanical expedition to south-western Amazonia. A description of shamanic practices is given to understand better the position of health practices in this culture, which includes the use of medicinal and ritual plants. Fragments of "ayahuasca" ritual in shamanic initiation and in healing rituals are presented. Different extracts of plants were studied for bioactivity according to their use and accessibility. The bioassays used were: the brine shrimp citotoxicity assay, the wheat rootlet growth inhibition assay and the DNA-methyl green assay. The results obtained and their possible corelation with the ethnomedical use are discussed.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Ethnobotany and bioactivity of medicinal plants used by an indigenus Takana group of the Peruvian Amazonia

Como resultado de un viaje etnobotánico al sudoeste de la cuenca amazónica, se colectó información sobre 50 plantas utilizadas como medicinales por los Ese'eja, un grupo de amerindios perteneciente a la familia lingüística takana que habita en la región de Madre de Dios, Perú. En este trabajo se describen las prácticas shamánicas de este pueblo, que comprenden el uso de plantas medicinales y rituales. Se relatan fragmentos del uso del "ayahuasca" en ritos de iniciación shamáhnica y curación. Se estudió la actividad biológica de diferentes extractos de aquellas plantas de mayor uso y disponibilidad. Los bioensayos empleados fueron: el bioensayo de citotoxicidad de Artemia salina, el bioensayo de inhibición del crecimiento de las raíces de los granos de trigo y el bioensayo de metil green-DNA. Se discuten los resultados obtenidos y su posible correlación con el uso etnomédico de las plantas estudiadas.Information on 50 medicinal plants used by the Ese'eja, a group of amerindians belonging to the takana linguistic family that lives in Madre de Dios, Perú, was collected during an ethnobotanical expedition to south-western Amazonia. A description of shamanic practices is given to understand better the position of health practices in this culture, which includes the use of medicinal and ritual plants. Fragments of "ayahuasca" ritual in shamanic initiation and in healing rituals are presented. Different extracts of plants were studied for bioactivity according to their use and accessibility. The bioassays used were: the brine shrimp citotoxicity assay, the wheat rootlet growth inhibition assay and the DNA-methyl green assay. The results obtained and their possible corelation with the ethnomedical use are discussed.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Structure-activity relationship of 1-desamino-8-D-arginine vasopressin as an antiproliferative agent on human vasopressin V2 receptor-expressing cancer cells

The synthetic nonapeptide 1-desamino-8-D-arginine vasopressin (dDAVP) can reduce tumor cell growth through agonist action on the vasopressin V2 receptor. A structure-antiproliferative activity relationship analysis of dDAVP was performed using the alanine scanning technique on the aggressive MDA-MB-231 human breast carcinoma cell line. The results from this analysis demonstrated that the amino acids located at the loop of dDAVP are important for the antiproliferative activity of dDAVP, highlighting the key role of the N-terminal region of the peptide in the interaction with the tumor cell surface receptor. The findings from this study present novel strategies for designing improved compounds with enhanced stability for cancer therapy.Fil: Pastrian, María Belén. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Guzmán, Fanny. Pontificia Universidad Católica de Valparaíso; ChileFil: Garona, Juan. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Oncología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pifano, Marina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Oncología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ripoll, Giselle Vanina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Oncología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cascone, Osvaldo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ciccia, Graciela Noemi. Gerencia de Desarrollo Científico Tecnológico; Argentina. Romikin S.A. Laboratorio de Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Albericio Palomera, Fernando. Barcelona Science Park. Institute for Research in Biomedicine; España. University of KwaZulu-Natal; SudáfricaFil: Gomez, Daniel Eduardo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Oncología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alonso, Daniel Fernando. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Oncología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Iannucci, Nancy Beatriz. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Romikin S.A. Laboratorio de Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

A phase II dose-escalation trial of perioperative desmopressin (1-desamino-8-d-arginine vasopressin) in breast cancer patients

Desmopressin (dDAVP) is a well-known peptide analog of the antidiuretic hormone vasopressin, used to prevent excessive bleeding during surgical procedures. dDAVP increases hemostatic mediators, such as the von Willebrand factor (vWF), recently considered a key element in resistance to metastasis. Studies in mouse models and veterinary trials in dogs with locally-advanced mammary tumors demonstrated that high doses of perioperative dDAVP inhibited lymph node and early blood-borne metastasis and significantly prolonged survival. We conducted a phase II dose-escalation trial in patients with breast cancer, administering a lyophilized formulation of dDAVP by intravenous infusion in saline, 30–60 min before and 24 h after surgical resection. Primary endpoints were safety and tolerability, as well as selection of the best dose for cancer surgery. Secondary endpoints included surgical bleeding, plasma levels of vWF, and circulating tumor cells (CTCs) as measured by quantitative PCR of cytokeratin-19 transcripts. Only 2 of a total of 20 patients experienced reversible adverse events, including hyponatremia (grade 4) and hypersensitivity reaction (grade 2). Reactions were adequately managed by slowing the infusion rate. A reduced intraoperative bleeding was noted with increasing doses of dDAVP. Treatment was associated with higher vWF plasma levels and a postoperative drop in CTC counts. At the highest dose level evaluated (2 μg/kg) dDAVP appeared safe when administered in two slow infusions of 1 μg/kg, before and after surgery. Clinical trials to establish the effectiveness of adjunctive perioperative dDAVP therapy are warranted. This trial is registered on www.clinicaltrials.gov (NCT01606072).Fil: Weinberg, Ruth S.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Grecco, Marcelo O.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Ferro, Gimena S.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Seigelshifer, Debora Judith. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Perroni, Nancy V.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; ArgentinaFil: Terrier, Francisco J.. Instituto Universitario del Hospital Italiano de Buenos Aires; ArgentinaFil: Sánchez Luceros, Analía Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentina. Academia Nacional de Medicina de Buenos Aires; ArgentinaFil: Maronna, Esteban. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; ArgentinaFil: Sánchez Marull, Ricardo. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; ArgentinaFil: Frahm, Isabel. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; ArgentinaFil: Guthmann, Marcelo D.. Laboratorio Elea; ArgentinaFil: Di Leo, Daniela. Laboratorio Elea; ArgentinaFil: Spitzer, Eduardo. Laboratorio Elea; ArgentinaFil: Ciccia, Graciela Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garona, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Pifano, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Torbidoni, Ana Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Gomez, Daniel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Ripoll, Giselle Vanina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Gomez, Roberto E.. Laboratorio Elea; ArgentinaFil: Demarco, Ignacio A.. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alonso, Daniel Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; Argentin