Clelia Akiko Hiruma-Lima is a full professor at the Department of Structural and Functional Biology (Physiology) at the Bioscience Institute of the São Paulo State University - UNESP (Botucatu, São Paulo, Brazil). Her work has been mainly focused on understanding the action of natural products (flavonoids and essential oil) in the treatment of gastrointestinal diseases (gastroesophageal reflux, peptic ulcers, intestinal inflammation and obesity). The morphofunctional, biochemical, and molecular aspects of gastrointestinal disorders are analyzed in rodents (mice and rats). The focus of the studies also involves the ethnopharmacological evaluation of Brazilian medicinal plants and all their therapeutic potential.
EDUCATION
Clelia Akiko Hiruma-Lima is a biologist from the State University of São Paulo (UNESP), holds a Master's degree in Pharmacology and Chemistry of Natural Products from UFPB, and a PhD in Physiology from Unicamp.
RESEARCH, TEACHING, or OTHER INTERESTS
Drug Discovery, Physiology, Structural Biology, Pharmacology (medical)
134
Scopus Publications
9152
Scholar Citations
56
Scholar h-index
126
Scholar i10-index
Scopus Publications
Citral exerts a more pronounced antinociceptive effect in obese adult male C57BL/6J mice mediated through the CB2 receptor Felipe Lima Dario, Maria Luiza Alves Aquino, Maycon Tavares Emílio-Silva, Felipe Leonardo Fagundes, Laura Vitória Fortunato de Oliveira, Isabela Galende Guidolin, Mariana Moraes Fioravanti, Renata Assunção, Vinícius Peixoto Rodrigues, Gabriela Bueno, Catarine Massucato Nishijima, Clelia Akiko Hiruma-Lima European Journal of Pharmacology, 2026 BACKGROUND: Obesity is a prevalent chronic disease strongly associated with pain, primarily due to low-grade systemic inflammation that sensitizes nociceptive neurons. OBJECTIVE: To evaluate the effects of citral, an acyclic monoterpene, present in essential oils such as Cymbopogon citratus (lemongrass), on nociception in obese mice and identify the mechanisms involved. METHODS: Adult male C57BL/6J mice (n = 270) were fed a standard diet (SD) or a high-fat diet (HFD) for 12 weeks. Metabolic alterations were confirmed using an oral glucose tolerance test. Nociception was assessed using the formalin test to evaluate both neurogenic (phase I) and inflammatory (phase II) pain. Citral (100 or 300 mg/kg) was orally administered. Carrageenan-induced paw edema was utilized to investigate anti-inflammatory properties. Antagonists for 5-HT2A (ketanserin, 1 mg/kg, i.p.) and CB2 (AM630, 1 mg/kg, i.p.) receptors were used. The vehicle group received 1% Tween 80 (10 mL/kg, orally). Statistical significance was set at p < 0.05. RESULTS: HFD-fed mice developed obesity, hyperglycemia, and increased thermal sensitivity. Citral (300 mg/kg) significantly reduced nociception in both phases of the formalin test in SD and HFD mice, with a greater effect in the HFD group. CB2 receptor antagonism reversed the antinociceptive effects of citral in both phases of the formalin test, whereas 5-HT2A antagonism produced no change. LPS did not influence citral-induced antinociception only in obese mice, and citral showed no effect in the hot-plate test. CONCLUSION: Citral exerts antinociceptive effects in both eutrophic and obese mice, with enhanced efficacy in obese mice. Its action is mediated, at least in part, by CB2 receptor modulation, which reduces both neurogenic and inflammatory pain. These findings suggest that citral is a potential therapeutic candidate for pain management in obesity-related conditions.
The Anthocyanidins Malvidin and Cyanidin Alleviate Irinotecan-Triggered Intestinal Mucositis by Modulating Oxidative Stress and Cytokine Release Giovana Filócomo Machado, Quélita Cristina Pereira, Felipe Leonardo Fagundes, Maycon Tavares Emílio-Silva, Vinícius Peixoto Rodrigues, Mariana de Almeida Patiño, Giulia Izzo Jorge, José Aires Pereira, Carlos Augusto Real Martinez, Clélia Akiko Hiruma-Lima, Raquel de Cássia dos Santos International Journal of Molecular Sciences, 2025 Chemotherapy with irinotecan (CPT-11) induces intestinal mucositis via oxidative stress and NF-κB-driven cytokine amplification. We investigated the protective effects of the anthocyanidins cyanidin and malvidin (5 mg/kg) in a murine CPT-11 mucositis model. Both compounds increased duodenal glutathione level (GSH) and reduced lipid peroxidation (MDA), with distinct antioxidant profiles: malvidin enhanced catalase (CAT) activity, while cyanidin elevated superoxide dismutase (SOD). In the colon, cyanidin lowered MDA, whereas other oxidative and inflammatory markers remained largely unchanged. Malvidin significantly reduced IL-1β and IL-17 in both intestinal segments; cyanidin selectively decreased IL-6 in the colon, and this reduction was also observed for malvidin treatment. Gene expression analysis revealed broad transcriptional suppression in the duodenum for both compounds (Nrf2, NF-κB, TNF-α, IL-1β, IL-6, IL-17, IL-10), while colonic effects were more limited (suppression in IL-6 for both compounds). Despite these biochemical and transcriptional improvements—which were more pronounced with malvidin—neither compound prevented CPT-11-induced weight loss or colonic histopathology, indicating that redox and cytokine modulation alone are insufficient to restore mucosal integrity. Overall, malvidin demonstrated a more significant modulation in the antioxidant response in the duodenum, with anti-inflammatory activity in both segments, while cyanidin showed targeted modulation of oxidative stress. These findings position both anthocyanidins as complementary agents with distinct mechanistic profiles, warranting further investigation into dose–response, pharmacokinetics, NRF2 protein dynamics, and barrier-repair strategies. Early-phase clinical evaluation is recommended to assess their potential as adjunctive therapies for chemotherapy-induced intestinal mucositis.
Maternal protein restriction promotes cardiac disorders by disrupting heart developmental morphophysiology in young male offspring rats Lucas Sobrinho Lemos, Matheus Naia Fioretto, Isabelle Tenori Ribeiro, Luísa Annibal Barata, Flávia Alessandra Maciel, Felipe Leonardo Fagundes, Renato Mattos, Luiz Marcos Frediani Portela, João Miguel Barboza, Beatriz Souza de Oliveira, Keila Emílio de Almeida, Sérgio Alexandre Alcantara dos Santos, Clélia Akiko Hiruma Lima, José Ricardo de Arruda Miranda, Elena Zambrano, Luis Antonio Justulin Experimental Cell Research, 2025
Maternal protein restriction impairs intestinal morphophysiology and antioxidant system in young male offspring rats Isabela Baptista Leal dos Santos, Matheus Naia Fioretto, Miguel Silingardi Jorge, Luísa Annibal Barata, Isabelle Tenori Ribeiro, André Matheus Leandro Franzolin, Erick Guilherme Stoppa, Renato Mattos, Luiz Marcos Frediane Portela, Maycon Tavares Emílio Silva, Sérgio Alexandre Alcântara dos Santos, José Ricardo de Arruda Miranda, Clélia Akiko Hiruma Lima, Luis Antonio Justulin Experimental Cell Research, 2025
Organic Selenium Reaches the Central Nervous System and Downmodulates Local Inflammation: A Complementary Therapy for Multiple Sclerosis? Juliana Helena dos Santos de Toledo, Thais Fernanda de Campos Fraga-Silva, Patrícia Aparecida Borim, Larissa Ragozo Cardoso de Oliveira, Evelyn da Silva Oliveira, Larissa Lucena Périco, Clélia Akiko Hiruma-Lima, Adriana Aparecida Lopes de Souza, Carlos Alberto Ferreira de Oliveira, Pedro de Magalhães Padilha, Marcos Felipe Pinatto-Botelho, Alcindo Aparecido dos Santos, Alexandrina Sartori, Sofia Fernanda Gonçalves Zorzella-Pezavento Frontiers in Immunology, 2020
Sex-specific effects of Eugenia punicifolia extract on gastric ulcer healing in rats Larissa Lucena Périco, Vinícius Peixoto Rodrigues, Rie Ohara, Gabriela Bueno, Vânia Vasti Alfieri Nunes, Raquel de Cássia dos Santos, Ana Carolina Lima Camargo, Luis Antônio Justulin Júnior, Sérgio Faloni de Andrade, Viviane Miranda Bispo Steimbach, Luísa Mota da Silva, Lúcia Regina Machado da Rocha, Wagner Vilegas, Catarina dos Santos, Clélia Akiko Hiruma-Lima World Journal of Gastroenterology, 2018
Gastroprotective and ulcer healing effects of essential oil from Hyptis spicigera Lam. (Lamiaceae) Christiane Takayama, Felipe Meira de-Faria, Ana Cristina Alves de Almeida, Deborah de Arantes e Oliveira Valim-Araújo, Camilla Souza Rehen, Ricardo José Dunder, Eduardo Augusto Rabelo Socca, Luis Paulo Manzo, Ariane Leite Rozza, Marcos José Salvador, Claúdia Helena Pellizzon, Clélia Akiko Hiruma-Lima, Anderson Luiz-Ferreira, Alba Regina Monteiro Souza-Brito Journal of Ethnopharmacology, 2011
Flavonoids with gastroprotective activity Kelly Samara De Lira Mota, Guilherme Eduardo Nunes Dias, Meri Emili Ferreira Pinto, Ânderson Luiz-Ferreira, Alba Regina Monteiro Souza-Brito, Clélia Akiko Hiruma-Lima, José Maria Barbosa-Filho, Leônia Maria Batista Molecules, 2009
The anti-ulcerogenic effects of Curatella americana L. Clélia Akiko Hiruma-Lima, Clenilson Martins Rodrigues, Hélio Kushima, Thiago Mello Moraes, Solange de Fatima Lolis, Shirley Barbosa Feitosa, Luciana Pietro Magri, Fernanda Rocha Soares, Maira Miranda Cola, Fábio Donizete Pezzutto Andrade, Wagner Vilegas, Alba Regina Monteiro Souza Brito Journal of Ethnopharmacology, 2009
Byrsonima fagifolia: An integrative study to validate the gastroprotective, healing, antidiarrheal, antimicrobial and mutagenic action Zeila Pinheiro Lima, Raquel de Cássia dos Santos, Talita Uliana Torres, Miriam Sannomiya, Clenilson Martins Rodrigues, Lourdes Campaner dos Santos, Cláudia Helena Pellizzon, Lúcia Regina Machado Rocha, Wagner Vilegas, Alba Regina Monteiro Souza Brito, Cássia Regina Primila Cardoso, Eliana Aparecida Varanda, Helen Pimenta de Moraes, Taís Maria Bauab, Camila Carli, Iracilda Zeppone Carlos, Clélia Akiko Hiruma-Lima Journal of Ethnopharmacology, 2008
Vernonia polyanthes as a new source of antiulcer drugs Victor Barbastefano, Maira Cola, Anderson Luiz-Ferreira, Elisângela Farias-Silva, Clélia A. Hiruma-Lima, Daniel Rinaldo, Wagner Vilegas, Alba R.M. Souza-Brito Fitoterapia, 2007
Analgesic effect of rotundifolone in rodents Fitoterapia, 1996
Medicinal plants popularly used in Brazilian Amazon Fitoterapia, 1994
RECENT SCHOLAR PUBLICATIONS
Citral exerts a more pronounced antinociceptive effect in obese adult male C57BL/6J mice mediated through the CB2 receptor FL Dario, MLA Aquino, MT Emílio-Silva, FL Fagundes, LVF de Oliveira, ... European Journal of Pharmacology, 178894 , 2026 2026
Citral impairs intestinal changes caused by ulcerative colitis through modulation of antioxidant, anti-inflammatory and healing activities MT Emílio-Silva, VP Rodrigues, AJ Ruiz-Malagon, IG Guidolin, FL Dario, ... Inflammopharmacology 34 (1), 655-669 , 2026 2026
Myrcene suppressed fever by downregulating systemic TNF-α levels in acute LPS-induced systemic inflammation in rats MT Emilio-Silva, VP Rodrigues, MM Fioravanti, LGS Branco, ... Advances in Traditional Medicine, 1-10 , 2025 2025
The Anthocyanidins Malvidin and Cyanidin Alleviate Irinotecan-Triggered Intestinal Mucositis by Modulating Oxidative Stress and Cytokine Release GF Machado, QC Pereira, FL Fagundes, MT Emílio-Silva, VP Rodrigues, ... International Journal of Molecular Sciences 26 (21), 10747 , 2025 2025 Citations: 1
Citral protects against metabolic endotoxemia, and systemic disorders caused by high-fat diet-induced obesity via intestinal modulation MT Emílio-Silva, VP Rodrigues, MM Fioravanti, AJ Ruiz-Malagon, ... Frontiers in Pharmacology 16, 1567217 , 2025 2025 Citations: 7
A high-fat diet changes the interaction of the extracellular matrix, cytokines, and growth factors in gastric ulcer repair R Ohara, FL Dario, MT Emílio-Silva, R Assunção, VP Rodrigues, G Bueno, ... Biochemical and Biophysical Research Communications 755, 151565 , 2025 2025 Citations: 1
Melatonin enhances cell death and suppresses the metastatic capacity of ovarian cancer cells by attenuating the signaling of multiple kinases MS Cucielo, PP Freire, MT Emílio-Silva, GG Romagnoli, RF Carvalho, ... Pathology-Research and Practice 248, 154637 , 2023 2023 Citations: 24
Orofacial anti-hypernociceptive effect of citral in acute and persistent inflammatory models in rats BM Santos, WS Santos, IG Solon, FS Garcia, MT Emilio-Silva, AA Jesus, ... Archives of Oral Biology 152, 105734 , 2023 2023 Citations: 9
Citral modulates MMP-2 and MMP-9 activities on healing of gastric ulcers associated with high-fat diet-induced obesity R Ohara, FL Dario, MT Emílio-Silva, R Assunção, VP Rodrigues, G Bueno, ... International Journal of Molecular Sciences 24 (5), 4888 , 2023 2023 Citations: 21
Role of the antioxidant pathway in the healing of peptic ulcers induced by ischemia–reperfusion in male and female rats treated with Eugenia punicifolia L Lucena Périco, R de Cássia dos Santos, V Peixoto Rodrigues, ... Inflammopharmacology 30 (4), 1383-1394 , 2022 2022 Citations: 8
Effect of Baccharis trimera Less (DC) essential oil in obese mice on a high-fat diet, part 1. adipose tissues evaluation. G Bueno, VP Rodrigues, R Ohara, MTE Silva, R Assunção, V Gomes, ... MDPI , 2021 2021
Antipyretic effect of myrcene (MCN) as a potential therapeutic alternative for the treatment of systemic inflammation response (SI) in euthermic rats model MT Emílio-Silva, ML Zarricueta, VP Rodrigues, PR Raimundo, ... MDPI , 2021 2021
Citral, a valuable aid against metabolic inflammation? VP Rodrigues, MT Emílio-Silvaa, R Oharaa, G Buenoa, PR Raimundoa, ... MDPI , 2021 2021
Is citrals anti-inflammatory action capable of changing the hypothalamic inflammation in obese mice? PR Raimundoa, VP Rodrigues, MT Emílio-Silvaa, G Buenoa, VG Gomesa, ... MDPI , 2021 2021 Citations: 1
Modulation of matrix metalloproteinases exerted by Citral in the healing of gastric ulcers in eutrophic and obese mice R Ohara, F Dario, G Bueno, V Rodrigues, M Silva, R Assunção, ... MDPI , 2021 2021
Evaluation of protective effect of citral on gastroesophageal reflux disease in eutrophic and obese mice A Fioretto, R Ohara, MTE Silva, VP Rodrigues, G Bueno, R Assunçao, ... MDPI , 2021 2021
Phytomedicinal study on Brazilian medicinal plants for their potential in chronic diseases treatment MJD Silva, LL Périco, MA da Silva, D Rinaldo, A Gambero, LC dos Santos, ... Phytochemicals in Food and Health, 151-196 , 2021 2021 Citations: 7
Genotoxicity induced by nerol, an essential oil present in citric plants using human peripheral blood mononuclear cells (PBMC) and HepG2/C3A cells as a model BO Silva, JB Orlando, CL Pires, CA Hiruma-Lima, ... Journal of Toxicology and Environmental Health, Part A 84 (12), 518-528 , 2021 2021 Citations: 17
The essential oil from Baccharis trimera (Less.) DC improves gastric ulcer healing in rats through modulation of VEGF and MMP-2 activity G Bueno, SLC Rico, LL Perico, R Ohara, VP Rodrigues, MT Emilio-Silva, ... Journal of ethnopharmacology 271, 113832 , 2021 2021 Citations: 29
Increased oxidative stress and cancer biomarkers in the ventral prostate of older rats submitted to maternal malnutrition LMF Portela, SAA Santos, FB Constantino, ACL Camargo, KT Colombelli, ... Molecular and cellular endocrinology 523, 111148 , 2021 2021 Citations: 28
MOST CITED SCHOLAR PUBLICATIONS
Flavonoids with gastroprotective activity KS de Lira Mota, GEN Dias, MEF Pinto, Â Luiz-Ferreira, ... Molecules 14 (3), 979-1012 , 2009 2009 Citations: 593
Plantas medicinais na Amazônia e na Mata Atlântica LC Di Stasi, CA Hiruma-Lima Editora Unesp , 2002 2002 Citations: 574
Effects of limonene and essential oil from Citrus aurantium on gastric mucosa: role of prostaglandins and gastric mucus secretion TM Moraes, H Kushima, FC Moleiro, RC Santos, LRM Rocha, ... Chemico-Biological Interactions 180 (3), 499-505 , 2009 2009 Citations: 276
Flavonoids and antiulcerogenic activity from Byrsonima crassa leaves extracts M Sannomiya, VB Fonseca, MA Da Silva, LRM Rocha, LC Dos Santos, ... Journal of Ethnopharmacology 97 (1), 1-6 , 2005 2005 Citations: 233
Gastroprotective mechanisms of Citrus lemon (Rutaceae) essential oil and its majority compounds limonene and β-pinene: Involvement of heat-shock protein-70, vasoactive … AL Rozza, T de Mello Moraes, H Kushima, A Tanimoto, MOM Marques, ... Chemico-biological interactions 189 (1-2), 82-89 , 2011 2011 Citations: 210
Evaluation of the analgesic and antiedematogenic activities of Quassia amara bark extract W Toma, JS Gracioso, CA Hiruma-Lima, FDP Andrade, W Vilegas, ... Journal of Ethnopharmacology 85 (1), 19-23 , 2003 2003 Citations: 207
The juice of fresh leaves of Boerhaavia diffusa L.(Nyctaginaceae) markedly reduces pain in mice CA Hiruma-Lima, JS Gracioso, EJB Bighetti, LG Robineou, ARMS Brito Journal of ethnopharmacology 71 (1-2), 267-274 , 2000 2000 Citations: 194
A review of the role of flavonoids in peptic ulcer (2010–2020) C Serafim, ME Araruna, EA Júnior, M Diniz, C Hiruma-Lima, L Batista Molecules 25 (22), 5431 , 2020 2020 Citations: 190
Plantas medicinais na Amazônia D Stasi Plantas medicinais na Amazônia, 194-194 , 1989 1989 Citations: 176
Antiulcerogenic activity of Alchornea castaneaefolia: effects on somatostatin, gastrin and prostaglandin CA Hiruma-Lima, TR Calvo, CM Rodrigues, FDP Andrade, W Vilegas, ... Journal of Ethnopharmacology 104 (1-2), 215-224 , 2006 2006 Citations: 173
The effect of a minor constituent of essential oil from Citrus aurantium: The role of β-myrcene in preventing peptic ulcer disease F Bonamin, TM Moraes, RC Dos Santos, H Kushima, FM Faria, MA Silva, ... Chemico-biological interactions 212, 11-19 , 2014 2014 Citations: 163
Medicinal plants popularly used in Brazilian Amazon. LC Stasi, CA Hiruma, EM Guimarães, CM Santos 1994 Citations: 140
Polyphenols with Antiulcerogenic Action from Aqueous Decoction of Mango Leaves ( Mangifera indica L.) JA Severi, ZP Lima, H Kushima, AR Monteiro Souza Brito, ... Molecules 14 (3), 1098-1110 , 2009 2009 Citations: 137
Preliminary studies of Mammea americana L.(Guttiferae) bark/latex extract point to an effective antiulcer effect on gastric ulcer models in mice W Toma, CA Hiruma-Lima, RO Guerrero, ARMS Brito Phytomedicine 12 (5), 345-350 , 2005 2005 Citations: 130
Hancornia speciosa: Indications of gastroprotective, healing and anti-Helicobacter pylori actions T de Mello Moraes, CM Rodrigues, H Kushima, TM Bauab, W Villegas, ... Journal of Ethnopharmacology 120 (2), 161-168 , 2008 2008 Citations: 127
Can the aqueous decoction of mango flowers be used as an antiulcer agent? ZP Lima, JA Severi, CH Pellizzon, A Brito, PN Solis, A Cáceres, LM Girón, ... Journal of Ethnopharmacology 106 (1), 29-37 , 2006 2006 Citations: 127
Antiulcerogenic activity of trans-dehydrocrotonin from Croton cajucara ARMS Brito, JA Rodriguez, CA Hiruma-Lima, M Haun, DS Nunes Planta Medica 64 (02), 126-129 , 1998 1998 Citations: 118
Antimicrobial activity of some medicinal plants of the Cerrado, Brazil ES Costa, CA Hiruma‐Lima, EO Lima, GC Sucupira, AO Bertolin, SF Lolis, ... Phytotherapy Research: An International Journal Devoted to Pharmacological … , 2008 2008 Citations: 115
Effect of Mouriri pusa extracts on experimentally induced gastric lesions in rodents: role of endogenous sulfhydryls compounds and nitric oxide in gastroprotection MA Andreo, KVR Ballesteros, CA Hiruma-Lima, LRM da Rocha, ... Journal of Ethnopharmacology 107 (3), 431-441 , 2006 2006 Citations: 115
Anti-inflammatory and Antinociceptive Effects in Rodents of the Essential Oil of Croton cajucara Benth EJB Bighetti, CA Hiruma-Lima, JS Gracioso, ARMS Brito Journal of Pharmacy and Pharmacology 51 (12), 1447-1453 , 1999 1999 Citations: 109