Sensorimotor gating impairments induced by MK-801 treatment may be reduced by tolerance effect and by familiarization in monkeys

Dizocilpine (MK-801) is a non-competitive NMDA antagonist that induces schizophreniclike effects. It is therefore widely used in experimental models of schizophrenia including prepulse inhibition (PPI) impairments in rodents. Nevertheless, MK-801 has never been tested in monkeys on a PPI paradigm. In order to evaluate MK-801 effects on monkeys’ PPI, we tested eight capuchin monkeys (Sapajus spp.) using three different doses of MK-801 (0.01; 0.02; 0.03 mg/kg). Results show PPI impairment in acute administration of the highest dose (0.03 mg/kg). PPI impairment induced by MK-801 was reversed by re-exposure to the PPI test throughout treatment trials, in contrast with rodent studies. These results indicate that tolerance effect and familiarization with PPI test may reduce the sensorimotor gating deficits induced by MK-801 in monkeys, suggesting a drug-training interaction

Mercury pollution and congenital malformations detected at birth in Porto Velho, Brazil, from 1997 to 2007

RESUMENLos posibles impactos negativos de la contaminación por mercurio en el río Madeira, Estado de Rondonia,Brasil, en la salud de los bebés recién nacidos fueron evaluados. La incidencia de malformacionescongénitas fue examinado en los registros de los recién nacidos en el principal hospital de Porto Velho,Rondonia, de 1997 a 2007. El tipo de malformaciones entre la población local y los casos transferidos deotras zonas de Rondonia fueron comparados. Malformaciones neurológicas relacionadas se encontraron enel 45% de los casos. La proporción de defectos neurológicos en la población local fue levemente superioren los casos transferidos. Malformaciones non neurológicas representó el 43% de la muestra y, el 11,4%sin especificar. La incidencia de la general (incluyendo non neurológicas) malformaciones congénitas fuesimilar al promedio de la región. Esto es indicativo de contaminación de mercurio durante el embarazo. Salud UIS 2011; 43 (3): 237-240Palabras Clave: Malformación del recién nacido, congénitas, factor ambiental, el mercurio ABSTRACTThe possible negative impacts of mercury contamination in the Madeira river, State of Rondonia, Brazil, onnewborn babies health were evaluated. The incidence of congenital malformations was surveyed from the recordsof newborns in the main hospital of Porto Velho, Rondonia, from 1997 to 2007. The type of malformationsbetween local population and cases transferred from other areas in Rondonia were compared. Neurological relatedmalformations were found in 45% of the cases. The proportion of neurological defects in the local population wasslightly higher than in transferred cases. Non-neurological malformations represented 43% of the sample and, 11.4%were unspecified. The incidence of general (including non-neurological) congenital malformations was similar tothe region’s average. This is indicative of Hg contamination during pregnancy. Salud UIS 2011; 43 (3): 237-240Keywords: Newborn, congenital malformation, environmental factor, mercur

Mammals in Portugal: a data set of terrestrial, volant, and marine mammal occurrences in Portugal

Mammals are threatened worldwide, with ~26% of all species being included in the IUCN threatened categories. This overall pattern is primarily associated with habitat loss or degradation, and human persecution for terrestrial mammals, and pollution, open net fishing, climate change, and prey depletion for marine mammals. Mammals play a key role in maintaining ecosystems functionality and resilience, and therefore information on their distribution is crucial to delineate and support conservation actions. MAMMALS IN PORTUGAL is a publicly available data set compiling unpublished georeferenced occurrence records of 92 terrestrial, volant, and marine mammals in mainland Portugal and archipelagos of the Azores and Madeira that includes 105,026 data entries between 1873 and 2021 (72% of the data occurring in 2000 and 2021). The methods used to collect the data were: live observations/captures (43%), sign surveys (35%), camera trapping (16%), bioacoustics surveys (4%) and radiotracking, and inquiries that represent less than 1% of the records. The data set includes 13 types of records: (1) burrows | soil mounds | tunnel, (2) capture, (3) colony, (4) dead animal | hair | skulls | jaws, (5) genetic confirmation, (6) inquiries, (7) observation of live animal (8), observation in shelters, (9) photo trapping | video, (10) predators diet | pellets | pine cones/nuts, (11) scat | track | ditch, (12) telemetry and (13) vocalization | echolocation. The spatial uncertainty of most records ranges between 0 and 100 m (76%). Rodentia (n =31,573) has the highest number of records followed by Chiroptera (n = 18,857), Carnivora (n = 18,594), Lagomorpha (n = 17,496), Cetartiodactyla (n = 11,568) and Eulipotyphla (n = 7008). The data set includes records of species classified by the IUCN as threatened (e.g., Oryctolagus cuniculus [n = 12,159], Monachus monachus [n = 1,512], and Lynx pardinus [n = 197]). We believe that this data set may stimulate the publication of other European countries data sets that would certainly contribute to ecology and conservation-related research, and therefore assisting on the development of more accurate and tailored conservation management strategies for each species. There are no copyright restrictions; please cite this data paper when the data are used in publications

Mercury pollution and congenital malformations detected at birth in Porto Velho, Brazil, from 1997 to 2007 Contaminación por mercurio y las malformaciones congénitas detectadas en el nacimiento en Porto Velho, Brasil, entre 1997 y 2007

The possible negative impacts of mercury contamination in the Madeira river, State of Rondonia, Brazil, on newborn babies health were evaluated. The incidence of congenital malformations was surveyed from the records of newborns in the main hospital of Porto Velho, Rondonia, from 1997 to 2007. The type of malformations between local population and cases transferred from other areas in Rondonia were compared. Neurological related malformations were found in 45% of the cases. The proportion of neurological defects in the local population was slightly higher than in transferred cases. Non-neurological malformations represented 43% of the sample and, 11.4% were unspecified. The incidence of general (including non-neurological) congenital malformations was similar to the region's average. This is indicative of Hg contamination during pregnancy. Salud UIS 2011; 43 (3): 237-240Los posibles impactos negativos de la contaminación por mercurio en el río Madeira, Estado de Rondonia, Brasil, en la salud de los bebés recién nacidos fueron evaluados. La incidencia de malformaciones congénitas fue examinado en los registros de los recién nacidos en el principal hospital de Porto Velho, Rondonia, de 1997 a 2007. El tipo de malformaciones entre la población local y los casos transferidos de otras zonas de Rondonia fueron comparados. Malformaciones neurológicas relacionadas se encontraron en el 45% de los casos. La proporción de defectos neurológicos en la población local fue levemente superior en los casos transferidos. Malformaciones non neurológicas representó el 43% de la muestra y, el 11,4% sin especificar. La incidencia de la general (incluyendo non neurológicas) malformaciones congénitas fue similar al promedio de la región. Esto es indicativo de contaminación de mercurio durante el embarazo. Salud UIS 2011; 43 (3): 237-24

Contaminación por mercurio y las malformaciones congénitas detectadas en el nacimiento en Porto Velho, Brasil, entre 1997 y 2007.

Los posibles impactos negativos de la contaminación por mercurio en el río Madeira, Estado de Rondonia, Brasil, en la salud de los bebés recién nacidos fueron evaluados. La incidencia de malformaciones congénitas fue examinado en los registros de los recién nacidos en el principal hospital de Porto Velho, Rondonia, de 1997 a 2007. El tipo de malformaciones entre la población local y los casos transferidos de otras zonas de Rondonia fueron comparados. Malformaciones neurológicas relacionadas se encontraron en el 45% de los casos. La proporción de defectos neurológicos en la población local fue levemente superior en los casos transferidos. Malformaciones non neurológicas representó el 43% de la muestra y, el 11,4% sin especificar. La incidencia de la general (incluyendo non neurológicas) malformaciones congénitas fue similar al promedio de la región. Esto es indicativo de contaminación de mercurio durante el embarazo. Salud UIS 2011; 43 (3): 237-240The possible negative impacts of mercury contamination in the Madeira river, State of Rondonia, Brazil, on newborn babies health were evaluated. The incidence of congenital malformations was surveyed from the records of newborns in the main hospital of Porto Velho, Rondonia, from 1997 to 2007. The type of malformations between local population and cases transferred from other areas in Rondonia were compared. Neurological related malformations were found in 45% of the cases. The proportion of neurological defects in the local population was slightly higher than in transferred cases. Non-neurological malformations represented 43% of the sample and, 11.4% were unspecified. The incidence of general (including non-neurological) congenital malformations was similar to the region�s average. This is indicative of Hg contamination during pregnancy. Salud UIS 2011; 43 (3): 237-24