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Figueredo KC, Guex CG, da Silva ARH, Lhamas CL, Engelmann AM, Maciel RM, Danesi CC, Duarte T, Duarte MMMF, Lopes GHH, Bauermann LDF. In silico and in vivo protective effect of Morus nigra leaves on oxidative damage induced by iron overload. Drug Chem Toxicol 2021; 45:2814-2824. [PMID: 34663156 DOI: 10.1080/01480545.2021.1991946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Morus nigra L. is a plant popularly known as 'amoreira preta', very used in folk medicine. Iron overload (hemochromatosis) is a clinical condition that causes damage to various tissues due to oxidative stress. Therapy to control iron overload is still unsatisfactory. The protective effect on oxidative stress induced by iron overload was verified. Phytochemical characterization was evaluated by UHPLC-MS/MS. The in silico toxicity predictions of the main phytochemicals were performed via computer simulation. To induce iron overload, the animals received iron dextran (50 mg/kg/day). The test groups received doses of 500 and 1000 mg/kg of M. nigra extract for six weeks. Body weight, organosomatic index, serum iron, hepatic markers, cytokines, interfering factors in iron metabolism, enzymatic and histopathological evaluations were analyzed. Vanillic acid, caffeic acid, 6-hydroxycoumarin, p-coumaric acid, ferulic acid, rutin, quercitrin, resveratrol, apigenin and kaempferol were identified in the extract. In addition, in silico toxic predictions showed that the main compounds presented a low probability of toxic risk. The extract of M. nigra showed to control the mediators of inflammation and to reduce iron overload in several tissues. Our findings illustrate a novel therapeutic action of M. nigra leaves on hemochromatosis caused by iron overload.
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Affiliation(s)
- Kássia Caroline Figueredo
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Camille Gaube Guex
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | - Cibele Lima Lhamas
- Veterinary Hospital, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | | | | | - Thiago Duarte
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
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Lima RD, Brondani JC, Dornelles RC, Lhamas CL, Faccin H, Silva CV, Dalmora SL, Manfron MP. Anti-inflammatory activity and identification of the Verbena litoralis Kunth crude extract constituents. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000417419] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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de Lima R, Guex CG, da Silva ARH, Lhamas CL, Dos Santos Moreira KL, Casoti R, Dornelles RC, da Rocha MIUM, da Veiga ML, de Freitas Bauermann L, Manfron MP. Acute and subacute toxicity and chemical constituents of the hydroethanolic extract of Verbena litoralis Kunth. J Ethnopharmacol 2018; 224:76-84. [PMID: 29772354 DOI: 10.1016/j.jep.2018.05.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 04/25/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Verbena litoralis Kunth is a native species of South America, popularly known as gervãozinho-do-campo or erva-de-pai-caetano. It is used in gastrointestinal disorders, as detoxifying the organism, antifebrile properties and amidaglitis. AIM OF THE STUDY To identify the chemical constituents of the hydroethanolic extract obtained from the aerial parts of V. litoralis and to evaluate the acute and sub-acute toxicity in male and female rats. MATERIALS AND METHODS The single dose (2000 mg/kg) of the extract was administered orally to male and female rats. In the subacute study the extract was given at doses of 100, 200 and 400 mg/kg during 28 days orally. Biochemical, hematological and histological analyzes were performed, oxidative stress markers were tested and chemical constituents were identified through UHPLC-ESI-HRMS RESULTS: Six classes of metabolites were identified: iridoids glycosides, flavonoids, phenylpropanoids-derived, phenylethanoid-derived, cinnamic acid-derived and triterpenes. In the acute treatment, the extract was classified as safe (category 5), according to the OECD guide. Our results demonstrated that subacute administration of the crude extract of V. litoralis at 400 mg/kg resulted in an increase in AST in males, whereas ALT enzyme showed a small increase in males that received 200 mg/kg and 400 mg/kg of the extract. CONCLUSIONS The extract of the aerial parts of Verbena litoralis did not present significant toxicity when administered a single dose. However, when different doses were administered for 28 days, were observed changes in hematological, biochemical and histological parameters in rats.
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Affiliation(s)
- Rachel de Lima
- Programa de Pós-Graduação em Ciências Farmacêuticas, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Camille Gaube Guex
- Programa de Pós-Graduação em Farmacologia, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Andreia Regina Haas da Silva
- Programa de Pós-Graduação em Ciências Farmacêuticas, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Cibele Lima Lhamas
- Hospital Veterinário, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | | | - Rosana Casoti
- Laboratory of Pharmacognosy, School of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, SP, Brazil.
| | - Rafaela Castro Dornelles
- Programa de Pós-Graduação em Farmacologia, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | | | - Marcelo Leite da Veiga
- Programa de Pós-Graduação em Farmacologia, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Liliane de Freitas Bauermann
- Programa de Pós-Graduação em Ciências Farmacêuticas, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Melânia Palermo Manfron
- Programa de Pós-Graduação em Ciências Farmacêuticas, Federal University of Santa Maria, Santa Maria, RS, Brazil.
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Figueredo KC, Guex CG, Reginato FZ, Haas da Silva AR, Cassanego GB, Lhamas CL, Boligon AA, Lopes GHH, de Freitas Bauermann L. Safety assessment of Morus nigra L. leaves: Acute and subacute oral toxicity studies in Wistar rats. J Ethnopharmacol 2018; 224:290-296. [PMID: 29772355 DOI: 10.1016/j.jep.2018.05.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 05/03/2018] [Accepted: 05/11/2018] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Morus nigra L. is a plant native to Asia, and well adapted to the Brazilian climate. It is popularly known as "amoreira preta", and is part of the National List of Plants of Interest to the Brazilian Unified Health System. It is used in folk medicine mainly to soften the effects of menopause, as anti-inflammatory, antidiabetic and antihypertensive. However, information on safe doses and use is still precarious. AIM OF THE STUDY To identify the chemical composition of the ethanolic extract of Morus nigra L. leaves (EEMN), as well as perform a toxicological study in male and female rats. MATERIALS AND METHODS The chemical composition of the extract was performed by HPLC/DAD. In the acute study, the dose administered was 2000 mg/kg, and signs of toxicity and mortality was observed. In the sub-acute study, the extract was administered at doses of 500, 750 and 1000 mg/kg for 28 days. Behavioral changes, object recognition test, renal and hepatic tissue assessments, biochemical and hematological parameters were determined. The extract was administered orally to male and female rats in both studies. RESULTS Quercetin and caffeic acid showed as major compounds in the extract. In the acute treatment, the extract was classified as safe (category 5), according to the protocol. In the subacute study, there was a decrease in AST in males (750 and 1000 mg/kg) and females (1000 mg/kg), reduction of total cholesterol in females (750 and 1000 mg/kg), and increase in renal and hepatic change the LPO levels. CONCLUSION The present investigation showed that EEMN did not present significant toxic effects when administered orally. Moreover, presented a potentially protective action of organs and possesses hypocholesterolemic activity, thus, it is shown as a promising natural source to be used in pharmacology.
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Affiliation(s)
- Kassia Caroline Figueredo
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Camille Gaube Guex
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Fernanda Ziegler Reginato
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | | | - Cibele Lima Lhamas
- Veterinary Hospital, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Aline Augusti Boligon
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
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Calil Brondani J, Reginato FZ, da Silva Brum E, de Souza Vencato M, Lima Lhamas C, Viana C, da Rocha MIUM, de Freitas Bauermann L, Manfron MP. Evaluation of acute and subacute toxicity of hydroethanolic extract of Dolichandra unguis-cati L. leaves in rats. J Ethnopharmacol 2017; 202:147-153. [PMID: 28288826 DOI: 10.1016/j.jep.2017.03.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dolichandra unguis-cati L. is a native climbing plant of Brazil, popularly known as "unha de gato". It has been traditionally used mainly as an antipyretic, anti-inflammatory and anti-tumor agent, yet little toxicological information is found in the literature. AIM OF THE STUDY To identify the chemical composition of the hydroethanolic extract obtained from the leaves of Dolichandra uniguis-cati and to evaluate the acute and subacute toxicity in male and female rats, in order to assess the safety profile of this plant. MATERIALS AND METHODS In the acute study, a single dose (2000mg/kg) of the extract was orally administered to male and female rats. In the subacute study, the extract was orally administered to male and female rats at doses 100, 200 and 400mg/kg for 28 days. Behavioral changes, catalase and tbars evaluations, biochemical, hematological and histopathological analysis were determined. The extract' chemical composition was accessed through UHPLC/MS. RESULTS Chlorogenic acid, caffeic acid, ferulic acid, vanillinic acid, p-coumaric acid, rosmarinic acid, trans-cinnamic acid, luteolin, apigenin, quercitrin and quercetin were identified in the extract. In the acute treatment, the extract was classified as safe (category 5), according to the OECD guide. In relation to the subacute study, females showed a reduction in AST (100, 200 and 400mg/kg), ALT (200mg/kg) and BUN (100 and 200mg/kg) levels, while male rats 400mg/kg presented an increase in AST levels. The Chol dosage significantly decreased in female rats in a dose-dependent manner, whereas for male rats this parameter showed no statistically significant reductions. No behavioral and histopathological changes were recorded. CONCLUSIONS Our results indicate that the hydroethanolic extract of Dolichandra unguis-cati leaves did not present relevant toxic effects when administered orally to male and female rats. The extract also showed a potential hypocholesterolemic activity.
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Affiliation(s)
- Juliana Calil Brondani
- Department of Industrial Pharmacy, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Fernanda Ziegler Reginato
- Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Evelyne da Silva Brum
- Department of Histology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Marina de Souza Vencato
- Department of Histology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Cibele Lima Lhamas
- Veterinary Hospital, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Carine Viana
- Department of Industrial Pharmacy, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | | | - Melânia Palermo Manfron
- Department of Industrial Pharmacy, Federal University of Santa Maria, Santa Maria, RS, Brazil
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