Publications by authors named "Inacio de Loiola Meirelles Junqueira de Azevedo"

Skeletal muscle regeneration after injury is a complex process involving inflammatory signaling and myoblast activation. Pro-inflammatory cytokines like tumor necrosis factor-alpha (TNF-α) are key mediators, but their effects on gene expression in proliferating myoblasts are unclear. We performed the RNA sequencing of TNF-α treated C2C12 myoblasts to elucidate the signaling pathways and gene networks regulated by TNF-α during myoblast proliferation.

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is the etiologic agent of the most prevalent human parasitic disease in Latin America, Chagas disease. Its genome is rich in multigenic families that code for virulent antigens and are present in the rapidly evolving genomic compartment named Disruptive. DNA replication is a meticulous biological process in which flaws can generate mutations and changes in chromosomal and gene copy numbers.

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Sphingomyelinase D (SMase D), the main toxic component of Loxosceles venom, has a well-documented role on dermonecrotic lesion triggered by envenomation with these species; however, the intracellular mechanisms involved in this event are still poorly known. Through differential transcriptomics of human keratinocytes treated with L. laeta or L.

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Among the Chilopoda class of centipede, the genus is one of the most associated with envenomation in humans in the metropolitan region of the state of São Paulo. To date, there is no study in the literature about the toxins present in its venom. Thus, in this work, a transcriptomic characterization of the venom gland, as well as a proteomic analysis of its venom, were performed to obtain a toxin profile of this species.

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Article Synopsis
  • Pararamosis is a disease caused by contact with the hairs of the Brazilian moth, leading to joint inflammation and cartilage damage that mimics conditions like osteoarthritis and rheumatoid arthritis.
  • The study investigated the toxic effects of caterpillar hair extract on human chondrocytes, focusing on inflammatory markers like cytokines and matrix metalloproteinases (MMPs), using techniques like RT-qPCR and RNA-seq.
  • Results showed increased levels of inflammatory proteins and a decrease in cartilage components, indicating a significant impact of the hair extract on cartilage health and suggesting potential pathways for treating the inflammatory response associated with this disease.
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Background: Except for the northern region, where the Amazonian black scorpion, T. obscurus, represents the predominant and most medically relevant scorpion species, Tityus serrulatus, the Brazilian yellow scorpion, is widely distributed throughout Brazil, causing most envenoming and fatalities due to scorpion sting. In order to evaluate and compare the diversity of venom components of Tityus obscurus and T.

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The number of cases of envenomation by scorpions has grown significantly in Brazil since 2007, with the most severe cases being caused by the scorpion. Although envenomed patients mostly suffer neurotoxic manifestations, other symptoms, such as hypertension, cannot be exclusively attributed to neurotoxins. Omics analyses have detected plentiful amounts of metalloproteases in venom.

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Article Synopsis
  • Few studies focused on the venom of Colubridae snakes, limiting understanding of their evolutionary toxin trends.
  • Researchers examined the venom of Phalotris mertensi using advanced techniques like RNAseq and proteomics, identifying a diverse array of 21 protein types, including Kunitz-type proteins and metalloproteinases.
  • The study highlighted the significance of verifying protein presence across species, revealing svLIPA as a true venom protein, and linking evolutionary trends in colubrid venoms to those in other venomous snakes, enhancing insights into reptile venom evolution.
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Scorpion venom is a mixture of peptides, including antimicrobial, bradykinin-potentiating and anionic peptides and small to medium proteins, such as ion channel toxins, metalloproteinases and phospholipases that together cause severe clinical manifestation. Tityus bahiensis is the second most medically important scorpion species in Brazil and it is widely distributed in the country with the exception of the North Region. Here we sequenced and analyzed the transcripts from the venom glands of T.

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