{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T16:15:43Z","timestamp":1773850543116,"version":"3.50.1"},"reference-count":37,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2023,5,21]],"date-time":"2023-05-21T00:00:00Z","timestamp":1684627200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o Carlos Chagas Filho de Amparo \u00e0 Pesquisa do Estado do Rio de Janeiro (FAPERJ)","award":["CAPES\u2014Financial code\u2014001"],"award-info":[{"award-number":["CAPES\u2014Financial code\u2014001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["TropicalMed"],"abstract":"<jats:p>Chagas disease is derived from the infection by the protozoan Trypanosoma cruzi. In many countries, benznidazole is the only drug approved for clinical use despite several side effects and the emergence of resistant parasite strains. In this context, our group has previously pointed out that two novel aminopyridine derivatives complexed with Cu2+, namely, cis-aquadichloro(N-[4-(hydroxyphenyl)methyl]-2-pyridinemethamino)copper (3a) and its glycosylated ligand cis-dichloro (N-{[4-(2,3,4,6-tetra-O-acetyl-\u03b2-D-glucopyranosyloxy)pheny]lmethyl}-2-pyridinemethamino)copper (3b), are effective against T. cruzi trypomastigote forms. With this result in mind, the present work aimed to investigate the effects of both compounds on trypomastigotes physiology and on the interaction process with host cells. Apart from loss of plasma membrane integrity, an increased generation of reactive oxygen species (ROS) and decreased mitochondrial metabolism were observed. Pretreatment of trypomastigotes with these metallodrugs inhibited the association index with LLC-MK2 cells in a typical dose-dependent manner. Both compounds showed low toxicity on mammalian cells (CC50 &gt; 100 \u00b5M), and the IC50 values calculated for intracellular amastigotes were determined as 14.4 \u00b5M for 3a and 27.1 \u00b5M for 3b. This set of results demonstrates the potential of these aminopyridines complexed with Cu2+ as promising candidates for further antitrypanosomal drug development.<\/jats:p>","DOI":"10.3390\/tropicalmed8050288","type":"journal-article","created":{"date-parts":[[2023,5,22]],"date-time":"2023-05-22T02:00:27Z","timestamp":1684720827000},"page":"288","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["In Vitro Effects of Aminopyridyl Ligands Complexed to Copper(II) on the Physiology and Interaction Process of Trypanosoma\u00a0cruzi"],"prefix":"10.3390","volume":"8","author":[{"given":"Rafaela","family":"Silva-Oliveira","sequence":"first","affiliation":[{"name":"Laborat\u00f3rio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leandro S.","family":"Sangenito","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil"},{"name":"Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia do Rio de Janeiro, Nil\u00f3polis 26530-060, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4236-1141","authenticated-orcid":false,"given":"Andrew","family":"Reddy","sequence":"additional","affiliation":[{"name":"Ferrier Research Institute, Victoria University of Wellington, Lower Hutt 5010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0701-8268","authenticated-orcid":false,"given":"Trinidad","family":"Velasco-Torrijos","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Maynooth University, W23VP22 Maynooth, Co. Kildare, Ireland"},{"name":"The Kathleen Lonsdale Institute for Human Health Research, Maynooth University, W23VP22 Maynooth, Co. Kildare, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0821-8592","authenticated-orcid":false,"given":"Andr\u00e9 L. S.","family":"Santos","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil"},{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Bioqu\u00edmica, Instituto de Qu\u00edmica, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9752-8148","authenticated-orcid":false,"given":"Marta H.","family":"Branquinha","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,21]]},"reference":[{"key":"ref_1","unstructured":"Pan American Health Organization (PAHO) (2023, March 22). 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