Mammalia

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    Protocols in Current Issue
    A Novel Dual Lentiviral CRISPR-based Transcriptional Activation System for Gene Expression Regulation in Neurons
    Authors:  Katherine E. Savell, Faraz A. Sultan and Jeremy J. Day, date: 09/05/2019, view: 522, Q&A: 0
    [Abstract] Robust and efficient gene expression control enables the study of a gene’s function in the central nervous system. Advances in CRISPR-based technology provide new avenues not only for gene editing, but for complex transcriptional control. Here, we describe a protocol to generate high-titer lentiviruses with neuron-optimized CRISPR-activation ...
    Cylinder Test to Assess Sensory-motor Function in a Mouse Model of Parkinson’s Disease
    [Abstract] Parkinson’s disease is a progressive neurodegenerative movement disorder that happens due to the loss of dopaminergic neurons in the substantia nigra. The deficiency of dopamine in the basal nuclei drives cardinal motor symptoms such as bradykinesia and hypokinesia. The current protocol describes the cylinder test, which is a relatively simple ...
    Protocol for Measuring Compulsive-like Feeding Behavior in Mice
    Authors:  Marta Fructuoso, Jose Espinosa-Carrasco, Ionas Erb, Cedric Notredame and Mara Dierssen, date: 07/20/2019, view: 500, Q&A: 0
    [Abstract] Obesity is an important health problem with a strong environmental component that is acquiring pandemic proportion. The high availability of caloric dense foods promotes overeating potentially causing obesity. Animal models are key to validate novel therapeutic strategies, but researchers must carefully select the appropriate model to draw the ...
    A High-throughput qPCR-based Method to Genotype the SOD1G93A Mouse Model for Relative Copy Number
    Authors:  Valerie R. Tassinari and Fernando G. Vieira, date: 06/20/2019, view: 824, Q&A: 0
    [Abstract] The most commonly used mouse model in ALS preclinical research expresses multiple copies of the human SOD1 (G93A) transgene. During the course of breeding, successive generations of mice can lose copies of the transgene. Because shorter lifespan of these mice is dependent on transgene copy number, it is essential to ensure that no low-copy, and ...
    Fluorescence HPLC Analysis of the in-vivo Activity of Glucosylceramide Synthase
    Authors:  Kartik R. Roy, Sachin K. Khiste, Zhijun Liu and Yong-Yu Liu, date: 06/20/2019, view: 1316, Q&A: 0
    [Abstract] Almost all functions of cells or organs rely on the activities of cellular enzymes. Indeed, the in-vivo activities that directly represent the cellular effects of enzymes in live organs are critical importance to appreciate the roles enzymes play in modulating physiological or pathological processes, although assessments of such in-vivo ...
    Rat Model of Empathy for Pain
    Authors:  Yang Yu, Chun-Li Li, Rui Du and Jun Chen, date: 06/20/2019, view: 586, Q&A: 0
    [Abstract] Empathy for pain is referred to as an evolutionary behavior of social animals and humans associated with the ability to feel, recognize, understand and share the other's distressing (pain, social rejection and catastrophe) states. Impairment of empathy can definitely lead to deficits in social communication and sociability (attachment, bond, ...
    Inducing Alcohol Dependence in Rats Using Chronic Intermittent Exposure to Alcohol Vapor
    Authors:  Elizabeth M. Avegno and Nicholas W. Gilpin, date: 05/05/2019, view: 852, Q&A: 0
    [Abstract] Alcohol use disorder (AUD) is a significant public health and economic burden and is often characterized by repeated bouts of alcohol intoxication and withdrawal. Virtually all organ systems are impacted by chronic alcohol exposure. These effects can be investigated using the rat as a model organism; however, rats typically will not ...
    Quantification of Serum Ovalbumin-specific Immunoglobulin E Titre via in vivo Passive Cutaneous Anaphylaxis Assay
    [Abstract] Murine models of allergic airway disease are frequently used as a tool to elucidate the cellular and molecular mechanisms of tissue-specific asthmatic disease pathogenesis. Paramount to the success of these models is the induction of experimental antigen sensitization, as indicated by the presence of antigen-specific serum immunoglobulin E. The ...
    Early Life Ovalbumin Sensitization and Aerosol Challenge for the Induction of Allergic Airway Inflammation in a BALB/c Murine Model
    [Abstract] The early life period represents a time of immunological plasticity whereby the functionally immature immune system is highly susceptible to environmental stimulation. Perennial aeroallergen and respiratory viral infection induced sporadic episodes of lung inflammation during this temporal window represent major risk factors for initiation of ...
    Assessing Olfaction Using Ultrasonic Vocalization Recordings in Mouse Pups with a Sono-olfactometer
    Authors:  Sébastien Wagner, Pierre-Marie Lledo and Françoise Lazarini, date: 02/20/2019, view: 1198, Q&A: 0
    [Abstract] Olfaction is the first sensory modality to develop during fetal life in mammals, and plays a key role in the various behaviors of neonates such as feeding and social interaction. Odorant cues (i.e., mother or predator scents) can trigger potentiation or inhibition of ultrasonic vocalizations (USV) emitted by pups following their ...



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