Bartonella henselae infection induces a persistent mechanical hypersensitivity in mice
| Autor: | Marilene Neves da Silva, Kalpna Gupta, Tânia Cristina Benetti Soares, Paulo Eduardo Neves Ferreira Velho, Karina de Almeida Lins, Amanda Roberta de Almeida, Bruno Groseli Lania, Gislaine Vieira-Damiani, Marina Rovani Drummond, Marna E. Ericson |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
Bartonella Fever 030231 tropical medicine RC955-962 Brief Communication Microbiology 03 medical and health sciences Mice 0302 clinical medicine Bartonella Infections Arctic medicine. Tropical medicine medicine Hypersensitivity Animals Endocarditis Fever of unknown origin Hepatitis Mice Inbred BALB C Bartonella henselae CATS biology business.industry Cat-Scratch Disease Angiomatosis biology.organism_classification medicine.disease Hyperalgesia Cats medicine.symptom business Brazil |
| Zdroj: | Revista do Instituto de Medicina Tropical de São Paulo; Vol. 62 (2020); e79 Revista do Instituto de Medicina Tropical de São Paulo; v. 62 (2020); e79 Revista do Instituto de Medicina Tropical de São Paulo Instituto de Medicina Tropical (IMT) instacron:IMT Revista do Instituto de Medicina Tropical de São Paulo, Vol 62 (2020) Revista do Instituto de Medicina Tropical de São Paulo, Volume: 62, Article number: e79, Published: 30 OCT 2020 |
| ISSN: | 1678-9946 0036-4665 |
| Popis: | Bartonella spp. are re-emerging and neglected bacterial pathogens. The natural reservoirs for several species of this genus are domestic animals such as cats and dogs, the most common pets in the USA and Brazil. Some cat studies suggest that the infection is more prevalent in tropical and poverty-stricken areas. These bacteria were associated with a wide spectrum of clinical manifestations: fever of unknown origin, endocarditis, angiomatosis, chronic lymphadenopathy, hepatitis, fatigue, paresthesia and pain. Our group has already demonstrated that B. henselae -infected sickle cell disease mice present with hyperalgesia. We hypothesized that even immunocompetent mice infected by B. henselae would show an increased and persistent mechanical sensitivity. Five ten-week old male BALB/c mice were intraperitoneally inoculated with a 30 µL of suspension containing 10 4 CFU/mL of B. henselae, while five others were inoculated with an equal volume of saline solution. Four days after bacterial inoculation, the mechanical paw withdrawal threshold was measured using von Frey filaments in all animals, for five consecutive days. The infected animals showed hypersensitivity to mechanical stimuli for five consecutive days. The present study has demonstrated that B. henselae infection induces persistent mechanical hypersensitivity, a signal consistent with pain. |
| Databáze: | OpenAIRE |
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