PubMed Health⌕ Search

PubMed · 12721862

[The olfactory bulb as a model for experimental studies].

Abstract

The olfactory bulb represents a model for several research works carried out in our laboratory. Several details concerning structure, cell varieties and connections have been described. Special attention should be given to the ensheathing glia which accompanies olfactory axons, it being responsible for its plasticity and regeneration, as well as intervening in glomerular formation and their specificity. The olfactory system also represents a good model for the study of certain developmental aspects of the nervous system, such as the formation of nerve tracts. The lateral olfactory tract extends into the basal telencephalon and its development is supported by the existence of pre-existing routes and several attractive or repulsive factors. Its development requires complex molecular interactions in combination with several signalling influences. Pax6 is a transcription factor required for brain development. Nasal structures and eyes are absent in the homozygous mutant mice. In this mutant we have described the presence of one particular structure which could be a prospective olfactory bulb. Specific cell markers have been used to demonstrate that this structure shows many structural characteristics of the olfactory bulb. These observations favor the hypothesis of the existence of specific patterns delimiting specific functional domains in absence of their proper afferent fibers.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

F Valverde. 2003. [The olfactory bulb as a model for experimental studies].. https://pubmed.ncbi.nlm.nih.gov/12721862/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Global Genomic Surveillance.

Global genomic surveillance has emerged as a foundational pillar of public health in the twenty-first century, enabling real-time tracking of pathogen evolution and informing outbreak response. This chapter examines the strategic architecture of global genomic surveillance, focusing on its application to arboviruses such as chikungunya virus (CHIKV). It explores the integration of genomic data with epidemiological, clinical, and environmental information within a One Health framework, while addressing critical challenges in governance, equity, and interoperability. The discussion covers the entire genomic surveillance workflow, from sample collection and sequencing to bioinformatic analysis and phylogenetic inference, and highlights the transformative role of artificial intelligence (AI) in predictive surveillance. By analyzing global initiatives, operational barriers, and emerging technologies, this chapter underscores the necessity of sustainable, equitable, and interoperable genomic systems to proactively address current and future infectious disease threats.

Humans↗

Systematic Dissection of Key Driver Perturbation Signatures in Single Cells via ECCITE-seq.

CRISPR screens, such as expanded CRISPR-compatible cellular indexing of transcriptomes and epitopes by sequencing (ECCITE-seq), enable the simultaneous measurement of transcriptomes, gRNA identity, and cell-surface protein expression at single-cell resolution to systematically interrogate gene function. This platform provides a powerful and scalable experimental approach for validating disease-associated regulators identified by large-scale association studies and other computational methods, including network-based analyses of multi-omics data. Here, as an example application, we describe an ECCITE-seq framework to characterize the transcriptomic consequences of perturbing multiple neuronal key driver genes associated with Alzheimer's disease (AD) in human-induced pluripotent stem cell (hiPSC)-derived neurons. More broadly, by integrating customized pooled gRNA libraries with different CRISPR effectors across multiple cell types, this approach allows for the assessment of the regulatory impact of candidate genes implicated in development and disease processes.

Humans↗

Identification of Genome-Wide Chromatin Structural Aberration in Cancer by Hi-C Analysis.

Aberrant three-dimensional genome organization is a hallmark of cancer, often driving oncogene activation through mechanisms such as enhancer hijacking. High-throughput chromosome conformation capture (Hi-C) maps these interactions on a genome-wide scale. Unlike earlier dilution-based methods, in situ Hi-C performs proximity ligation within intact nuclei, minimizing random ligation noise and enabling fine-scale structure detection. This chapter describes an optimized in situ Hi-C protocol tailored for cancer cell lines using MboI digestion and biotin-mediated pull-down to generate high-complexity libraries. We further outline a computational workflow that extends beyond standard topological mapping of compartments and topologically associating domains to identify cancer-specific aberrations. Specifically, we focus on detecting chromosomal rearrangements (structural variants) and characterizing the distinct circular topology of extrachromosomal DNA. This integrated experimental and analytical framework provides the necessary tools to dissect the spatial dysregulation underlying tumor evolution.

Humans↗