Publications by authors named "J C Pereyra"
Draft genomes of two spp. isolated from the coral from a Singaporean reef.
Microbiol Resour Announc
November 2024
Article Synopsis
- - Two specific strains (SCP14 and SCP15) were extracted from coral remains in Singapore, particularly in high-temperature conditions.
- - The genomes of these strains were sequenced, which means their genetic makeup was analyzed and recorded.
- - The genetic information revealed important elements that contribute to the health of coral, especially when they face temperature-related stress.
A sp. was isolated from the skeleton of the heat resilient coral . Genome analysis revealed the presence of the complete denitrification pathway and potential dimethylsulfoniopropionate metabolism which enhance coral resilience and production of tropodithietic acid, an antibiotic implicated in host defense.
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- Two-component systems (TCSs) are essential for bacteria to respond to environmental changes, and in Bacillus subtilis, the DesK/DesR TCS is key for maintaining membrane lipid balance.
- This study reveals that the YvfT/YvfU TCS, previously uncharacterized, regulates the yvfRS operon, which encodes an ABC transporter, and interestingly, its expression is temperature-dependent.
- The research shows that the DesK/DesR system influences the expression of yvfRS as both TCSs interact to help the bacteria adapt to their environment, highlighting the complexity of bacterial signaling mechanisms.*
Rectal swabs (122) from pediatric patients were analyzed by polymerase chain reaction (PCR) for the detection of EPEC and STEC. STEC isolates were tested for the presence of stx1, stx2, eae, saa and ehxA. All eae-positive samples were tested for the presence of bfpA, and antigen O was determined using the agglutination test.
View Article and Find Full Text PDFMacrophages count on two O-consuming enzymes to form reactive radical species: NAPDH oxidase 2 (Nox2) and nitric oxide synthase 2 (inducible isoform, iNOS) that produce superoxide radical (O) and nitric oxide (NO), respectively. If formed simultaneously, the diffusion-controlled reaction of O and NO yields peroxynitrite, a potent cytotoxic oxidant. In human tissues and cells, the oxygen partial pressure (pO) normally ranges within 2-14 %, with a typical average pO value for most tissues ca.
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