Publications by authors named "Ronald Guillermo Pelaez-Sanchez"

Gliomas are neoplasms of the central nervous system that originate in glial cells. The genetic characteristics of this type of neoplasm are the loss of function of tumor suppressor genes such as and somatic mutations in genes such as . Additionally, in clinical cases, de novo single nucleotide polymorphisms (SNP) are reported, of which their pathogenicity and their effects on the function and stability of the protein are known.

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  • * Although treatment with doxycycline and azithromycin has been effective so far, antibiotic resistance is a growing concern due to the widespread use of these medications.
  • * This study found 12 genes linked to antibiotic resistance in various species of the genus, signaling a need for further research to explore if these genes are active in different types of the bacteria.
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Emerging infectious diseases represent a serious and ongoing threat to humans. Most emerging viruses are maintained in stable relationships with other species of animals, and their emergence within the human population results from cross-species transmission. Therefore, if we want to be prepared for the next emerging virus, we need to broadly characterize the diversity and ecology of viruses currently infecting other animals (i.

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Leptospirosis is a globally distributed zoonotic disease caused by pathogenic bacteria of the genus . This zoonotic disease affects humans, domestic animals and wild animals. Colombia is considered an endemic country for leptospirosis; Antioquia is the second department in Colombia, with the highest number of reported leptospirosis cases.

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  • * A family is reported with a heterozygous mutation in NFKB2 that results in no protein expression and reduced mRNA, leading to decreased NFKB2 activity (haploinsufficiency) and associated clinical immunodeficiency.
  • * Key immunological features include abnormal B cell development, low antibody levels, and specific signaling issues, which further clarify the genetics behind NFKB2-related immunodeficiency disorders.
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Introduction: Phylogenetic analysis of the 16S ribosomal gene initial region is used to identify Leptospira isolates at the species level from clinical samples. Unfortunately, this method cannot differentiate between some intermediates and saprophytic species.

Methods: We used comparative genomic analysis between 35 Leptospira species to find new molecular targets for Leptospira species identification.

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The region of Antioquia in northeastern Colombia has the highest number of reported leptospirosis cases in the country. It also shows high seroprevalence indexes in the general population and socio-environmental conditions favourable for the transmission of the disease between humans and animals. In this study, 25 Leptospira isolates from Colombia's Antioquia department were identified to the species level as L.

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