1
|
Martins Fernandes Pereira K, Calheiros de Carvalho A, André Moura Veiga T, Melgoza A, Bonne Hernández R, dos Santos Grecco S, Uchiyama Nakamura M, Guo S. The psychoactive effects of Bryophyllum pinnatum (Lam.) Oken leaves in young zebrafish. PLoS One 2022; 17:e0264987. [PMID: 35263358 PMCID: PMC8906576 DOI: 10.1371/journal.pone.0264987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 02/22/2022] [Indexed: 11/18/2022] Open
Abstract
Bryophyllum pinnatum (Lam.) Oken (BP) is a plant that is used worldwide to treat inflammation, infections, anxiety, restlessness, and sleep disorders. While it is known that BP leaves are rich in flavonoids, the extent of the beneficial and toxic effects of its crude extracts remains unclear. Although some neurobehavioral studies using leaf extracts have been conducted, none has examined the effects of water-extracted leaf samples. The zebrafish is a powerful animal model used to gain insights into the efficacy and toxicity profiles of this plant due to its high fecundity, external development, and ease of performing behavioral assays. In this study, we performed behavioral testing after acute exposure to different concentrations of aqueous extract from leaves of B. pinnatum (LABP) on larval zebrafish, investigating light/dark preference, thigmotaxis, and locomotor activity parameters under both normal and stressed conditions. LABP demonstrated dose-and time-dependent biphasic effects on larval behavior. Acute exposure (25 min) to 500 mg/L LABP resulted in decreased locomotor activity. Exposure to 300 mg/L LABP during the sleep cycle decreased dark avoidance and thigmotaxis while increasing swimming velocity. After sleep deprivation, the group treated with 100 mg/L LABP showed decreased dark avoidance and increased velocity. After a heating stressor, the 30 mg/L and 300 mg/L LABP-treated groups showed decreased dark avoidance. These results suggest both anxiolytic and psychoactive effects of LABP in a dose-dependent manner in a larval zebrafish model. These findings provide a better understanding of the mechanisms underlying relevant behavioral effects, consequently supporting the safe and effective use of LABP for the treatment of mood disorders.
Collapse
Affiliation(s)
- Kassia Martins Fernandes Pereira
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Department of Bioengineering and Therapeutic Sciences, Programs in Biological Sciences and Human Genetics, University of California, San Francisco, San Francisco, California, United States of America
- * E-mail:
| | | | | | - Adam Melgoza
- Department of Bioengineering and Therapeutic Sciences, Programs in Biological Sciences and Human Genetics, University of California, San Francisco, San Francisco, California, United States of America
- Pharmaceutical Sciences and Pharmacogenomics Graduate Program, University of California, San Francisco, San Francisco, California, United States of America
| | - Raúl Bonne Hernández
- Laboratory of Bioinorganic and Environmental Toxicology–LABITA, Department of Chemistry, Universidade Federal de São Paulo. Diadema. SP. Brazil
| | | | | | - Su Guo
- Department of Bioengineering and Therapeutic Sciences, Programs in Biological Sciences and Human Genetics, University of California, San Francisco, San Francisco, California, United States of America
- Pharmaceutical Sciences and Pharmacogenomics Graduate Program, University of California, San Francisco, San Francisco, California, United States of America
| |
Collapse
|
2
|
Guedes MHDG, Maia MHM, Graeff CFDO, González AHM, Grecco SDS, D'Alpino P. Longevity of bonded composite restorations after dentin biomodification with neolignans obtained from Nectandra leucantha. Braz Dent Sci 2022. [DOI: 10.4322/bds.2022.e3300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
3
|
Yamamoto ES, Campos BLS, Laurenti MD, Lago JHG, Grecco SDS, Corbett CEP, Passero LFD. Treatment with triterpenic fraction purified from Baccharis uncinella leaves inhibits Leishmania (Leishmania) amazonensis spreading and improves Th1 immune response in infected mice. Parasitol Res 2014; 113:333-9. [PMID: 24173812 DOI: 10.1007/s00436-013-3659-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 10/16/2013] [Indexed: 12/11/2022]
Abstract
The current medications used to treat leishmaniasis have many side effects for patients; in addition, some cases of the disease are refractory to treatment. Therefore, the search for new leishmanicidal compounds is indispensable. Recently, it was demonstrated that oleanolic- and ursolic-containing fraction from Baccharis uncinella leaves eliminated the promastigote and amastigote forms of Leishmania (Leishmania) amazonensis and L. (Viannia) braziliensis without causing toxic effects for J774 macrophages. Thus, the aim of the present work was to characterize the therapeutic effect of the triterpenic fraction in L. (L.) amazonensis-infected BALB/c mice. Oleanolic- and ursolic acid-containing fraction was extracted from B. uncinella leaves using organic solvents and chromatographic procedures. L. (L.) amazonensis-infected BALB/c mice were treated intraperitoneally with triterpenic fraction during five consecutive days with 1.0 and 5.0 mg/kg of triterpenic fraction, or with 10.0 mg/kg of amphotericin B drug. Groups of mice treated with the triterpenic fraction, presented with decreased lesion size and low parasitism of the skin-both of which were associated with high amounts of interleukin-12 and interferon gamma. The curative effect of this fraction was similar to amphotericin B-treated mice; however, the final dose, required to eliminate amastigotes, was lesser than amphotericin B. Moreover, triterpenic fraction did not cause microscopic alterations in liver, spleen, heart, lung, and kidney of experimental groups. This work suggests that this fraction possesses compounds that are characterized by leishmanicidal and immunomodulatory activities. From this perspective, the triterpenic fraction can be explored as a new therapeutic agent for use against American Tegumentar Leishmaniasis.
Collapse
Affiliation(s)
- Eduardo Seiji Yamamoto
- Laboratório de Patologia de Moléstias Infeciosas, Departamento de Patologia da Faculdade de Medicina, da Universidade de São Paulo, Av. Dr. Arnaldo, 455, Cerqueira César, 01246-000, São Paulo, Brazil
| | | | | | | | | | | | | |
Collapse
|