Results 1 to 10 of about 28,450 (152)

Estradiol Replacement Modulates Synaptic Transmission-Related Proteins in the Hippocampus of Ovariectomized Rats: An Exploratory Proteomic Approach. [PDF]

J Neurochem
The estrogen deficiency in the hippocampus influences cognitive functions and control of food intake. Hippocampi of female rats, either control or ovariectomized, with or without estrogen replacement, were submitted to LC–MS/MS and analysis of pathway‐based functional roles of proteins affected by estrogen deficiency and replacement.
Pedroso AP, Souza AP, Câmara GA, Machado MMF, Boldarine VT, Oyama LM, Telles MM, Tashima AK, Ribeiro EB.   +8 more
europepmc   +2 more sources

Hybridization, Maternal Inheritance, and Evolutionary Time of Divergence of Endangered Species of <i>Hypancistrus</i> (Siluriformes: Loricariidae) in the Xingu River. [PDF]

Ecol Evol
We uncover recent hybridization dynamics among three endemic Hypancistrus species from the Xingu River, including the critically endangered H. zebra. Mitogenomic analyses reveal unidirectional maternal inheritance and recent evolutionary radiation (< 0.5 Ma), explaining their retained reproductive compatibility.
Kerniske FF, Melo BF, Sousa LM, Degrandi TM, Artoni RF.   +4 more
europepmc   +2 more sources

Comparative Analysis of the Behavior of Llamas Housed in a Research Facility in Response to Different Environmental Enrichment Stimuli. [PDF]

Anim Sci J
ABSTRACT Environmental enrichment (EE) is essential for promoting welfare and reducing atypical behaviors in captive research animals, but we know little about effective EE strategies for llamas (Lama glama). This study evaluated the behavioral responses to EE items provided to llamas housed in a biomedical research facility in Brazil, where they are ...
Brum R, de Abreu Rangel Aguirre A, da Silva KSM.   +2 more
europepmc   +2 more sources

Description of the Early Development of Hoplias intermedius (Günther, 1864) (Characiformes: Erythrinidae). [PDF]

J Morphol
This study provides the first description of the early development of Hoplias intermedius (Characiformes: Erythrinidae), from the embryonic to the juvenile stage. The morphological, meristic, and morphometric characterization contributes to understanding the ontogeny and developmental transitions of Neotropical fishes, supporting taxonomy, conservation,
de Souza MBV, Volpato RS, Bialetzki A.
europepmc   +2 more sources

Adjuvant Antibacterial Effects of Mouriri Elliptica Against Clinical Multidrug Resistant Gram-Negative Bacterial Strains. [PDF]

Microbiologyopen
The ethanolic leaf extract of Mouriri elliptica exhibited antibacterial and antibiofilm activities against multidrug‐resistant clinical isolates and enhanced the activity of ampicillin. Its diverse chemical profile and low acute toxicity support this Cerrado species as a promising source of natural antibacterial adjuvants. ABSTRACT Bacterial resistance
Freire TV, Marques ACF, Gonçalves VDS, Moslaves ISB, Toffoli-Kadri MC, Silva AFCD, Giz MJ, Figueiredo PO, Micheletti AC, Yoshida NC.   +9 more
europepmc   +2 more sources

B-Mode Ultrasonographic Evaluation and Reference Dimensions of the Liver and Spleen in Healthy Lactating Saanen Goats. [PDF]

Vet Radiol Ultrasound
ABSTRACT This study aimed to establish reference ultrasonographic parameters for the liver and spleen in 34 healthy Saanen goats. The spleen was visualized between the 12th and 8th intercostal spaces (ICS), with homogeneous parenchyma and a hyperechoic capsule and splenic vein with a mean diameter of 3.3 ± 0.9 mm.
Silva TVD, Moreira IB, Carvalho RDS, Santiago CBA, Balaro MFA.   +4 more
europepmc   +2 more sources

Occurrence of multiple congenital anomalies in Potamotrygon amandae (Elasmobranchii, Potamotrygoninae) embryos, including the first report of bicephaly. [PDF]

J Fish Biol
Abstract Reports of teratogenic embryos in elasmobranchs have been documented in multiple species, with proposed aetiologies including environmental disturbances, genetic mutations, predation, exposure to endocrine‐disrupting compounds and maternal stress.
de Castro Ribeiro D, Queiroz RL, da Silva Ribeiro C.   +2 more
europepmc   +2 more sources

Estudos Sôbre Regulação Metabólica Contrôle de Síntese de Proteínas: V - Ação da Glicose na Regulação da Tirosina Alfa Ceto Glutarato Transaminase em Fígado de Rato

Revista Brasileira de Cancerologia, 2023
É demonstrado que a administração de glicose provoca a diminuição da atividade da tirosina transaminase em fígado de rato. Este efeito “repressor” se apresenta em animais normais ou diabéticos por aloxanização, nos quais foi induzida por corticóides, ou,
Mauro C. Faria, F. G. Mello, P. Preza, H.C. Faria   +3 more
doaj   +3 more sources

Dosagem Colorimétrica da Lactodesidrogenase

Revista Brasileira de Cancerologia, 2023
O autor recomenda um método colorimétrico para medir a atividade da desidrogenase lática (LDH) em 0,1 ml de soro baseado na reação lactato + DPN à pyruvate +\ DPNH2 em pH 10 tampão glicina.
Scylla de Castro Fragoso, Hugo de Castro Faria   +1 more
doaj   +1 more source

O Emprego do Radioiodo no Estudo da Função Tireoidiana

Revista Brasileira de Cancerologia, 2023
Discutimos, no presente trabalho, as principais técnicas de estudo da função tireoidiana com radioiôdo. Como principais contribuições pessoais destacamos: 1) Ligeira modificação nas técnicas de COOPER e do Abbott Lab.
Aristides Pinto Coelho
doaj   +1 more source