Publications by authors named "V Johansson"
Article Synopsis
- * This study examined the impact of fire history over the past 12 years on beetles attracted to smoke traps across 21 forest sites in a vast area.
- * Findings showed that fire-favored beetles thrived near recent fires, with optimal distance and time frames indicating that these species are most influenced by burns within 2 km and 2-3 years post-fire.
Front Vet Sci
October 2024
Article Synopsis
- Antimicrobial resistance (AMR) is a global health issue exacerbated by the widespread use of antimicrobials in food-producing animals, contributing to increased mortality and economic costs.
- A pilot study in South Africa examined wastewater and environmental samples from abattoirs to assess the prevalence of resistant bacteria, focusing on several types, including ESBL- and carbapenemase-producing Enterobacterales, and Methicillin-Resistant Staphylococcus aureus (MRSA).
- Results showed a significant presence of ESBL-producing bacteria, with sequencing revealing various sequence types of the isolates, but MRSA and other resistant strains were absent; many of these findings link back to practices in the food animal production industry globally.
Article Synopsis
- * Out of 80 wastewater samples collected between February 2021 and January 2022, 27.5% tested positive for MRSA, and over 80% of the isolates showed resistance to multiple drugs, including clindamycin and tetracycline.
- * Genomic analysis identified specific strains and resistance mechanisms, with significant findings like the presence of the USA300 clone and various plasmids contributing to antibiotic resistance in over 70% of the isolates.
JAMA Psychiatry
December 2024
Article Synopsis
- Schizophrenia and bipolar disorder are heritable psychiatric conditions; this study aims to explore how genetic factors, specifically polygenic risk scores (PRS), influence psychosis among twins.*
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- Using data from the Schizophrenia and Bipolar Twin Study and the Swedish Twin Registry, researchers analyzed twin pairs to see if those with higher PRS had increased likelihood of psychosis.*
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- The final analysis included over 300 twin pairs, assessing psychosis through clinical interviews, with the goal of determining the heritability of psychosis and understanding genetic overlap between the two disorders.*
Transl Psychiatry
July 2024
Article Synopsis
- Monozygotic (MZ) twins, typically considered genetically identical, actually can have differing DNA variants due to early post-zygotic events, which may relate to differences in disease manifestation.
- In a study involving whole genome sequencing of 17 pairs of MZ twins discordant for psychotic disorders, researchers found rare genetic variants unique to affected individuals, including specific genes linked to schizophrenia and bipolar disorder.
- The research identified significant genetic variations, such as deleterious missense variants and rare genic copy number variants (CNVs), suggesting a potential link to the disorders, and emphasizes the need for further investigation in this area.
