{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T23:37:05Z","timestamp":1781307425548,"version":"3.54.1"},"reference-count":20,"publisher":"FapUNIFESP (SciELO)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. Inst. Med. trop. S. Paulo"],"published-print":{"date-parts":[[2013,2]]},"abstract":"<jats:p>Bacteria of the genus Bartonella are emerging pathogens detected in lymph node biopsies and aspirates probably caused by increased concentration of bacteria. Twenty-three samples of 18 patients with clinical, laboratory and\/or epidemiological data suggesting bartonellosis were subjected to three nested amplifications targeting a fragment of the 60-kDa heat shock protein (HSP), the internal transcribed spacer 16S-23S rRNA (ITS) and the cell division (FtsZ) of Bartonella henselae, in order to improve detection in clinical samples. In the first amplification 01, 04 and 05 samples, were positive by HSP (4.3%), FtsZ (17.4%) and ITS (21.7%), respectively. After the second round six positive samples were identified by nested-HSP (26%), eight by nested-ITS (34.8%) and 18 by nested-FtsZ (78.2%), corresponding to 10 peripheral blood samples, five lymph node biopsies, two skin biopsies and one lymph node aspirate. The nested-FtsZ was more sensitive than nested-HSP and nested-ITS (p &lt; 0.0001), enabling the detection of Bartonella henselae DNA in 15 of 18 patients (83.3%). In this study, three nested-PCR that should be specific for Bartonella henselae amplification were developed, but only the nested-FtsZ did not amplify DNA from Bartonella quintana. We conclude that nested amplifications increased detection of B. henselae DNA, and that the nested-FtsZ was the most sensitive and the only specific to B. henselae in different biological samples. As all samples detected by nested-HSP and nested-ITS, were also by nested-FtsZ, we infer that in our series infections were caused by Bartonella henselae. The high number of positive blood samples draws attention to the use of this biological material in the investigation of bartonellosis, regardless of the immune status of patients. This fact is important in the case of critically ill patients and young children to avoid more invasive procedures such as lymph nodes biopsies and aspirates.<\/jats:p>","DOI":"10.1590\/s0036-46652013000100001","type":"journal-article","created":{"date-parts":[[2013,4,1]],"date-time":"2013-04-01T17:19:54Z","timestamp":1364836794000},"page":"1-6","source":"Crossref","is-referenced-by-count":14,"title":["Detection of Bartonella henselae DNA in clinical samples including peripheral blood of immune competent and immune compromised patients by three nested amplifications"],"prefix":"10.1590","volume":"55","author":[{"given":"Karina Hatamoto","family":"Kawasato","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L\u00e9a Campos de","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paulo Eduardo Neves Ferreira","family":"Velho","sequence":"additional","affiliation":[{"name":"Universidade Estadual de Campinas, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lidia","family":"Yamamoto","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gilda Maria Barbaro","family":"Del Negro","sequence":"additional","affiliation":[{"name":"USP; Universidade de S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thelma Suely","family":"Okay","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"942","DOI":"10.1128\/JCM.32.4.942-948.1994","article-title":"Detection of Rochalimaea 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