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Hanrio E, Bogema D, Davern K, Batley J, Clarke M, Abudulai L, Severn-Ellis A, Dang C. Characterisation of common hypothetical surface peptides between protozoan parasites (Perkinsus olseni) originating from different geographical locations. DISEASES OF AQUATIC ORGANISMS 2024; 158:143-155. [PMID: 38813855 DOI: 10.3354/dao03790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Perkinsus olseni and P. marinus are classified as notifiable pathogens by the World Organisation for Animal Health and are known to cause perkinsosis in a variety of molluscs globally. Mass mortalities due to these parasites in farms and in the wild have been a recurrent issue. Diagnosis for these protozoans is currently done using Ray's fluid thioglycollate medium method followed by optical microscopy or molecular assays. Both require a high level of skill and are time-consuming. An immunoassay method would make the diagnosis of perkinsosis quicker and cheaper. The present study used mass spectrometry-based proteomics to investigate common hypothetical surface peptides between different geographical isolates of P. olseni, which could be used to develop immunoassays in the future. Two peptides were identified: POLS_08089, which is a 42.7 kDa peptide corresponding to the 60S ribosomal subunit protein L4; and POLS_15916, which is a conserved hypothetical protein of 55.6 kDa. The identification of peptides may allow the development of immunoassays through a more targeted approach.
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Affiliation(s)
- Eliot Hanrio
- The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
- Department of Primary Industries and Regional Development, Government of Western Australia, Perth, WA 6000, Australia
| | - Daniel Bogema
- Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle, NSW 2568, Australia
| | - Kathleen Davern
- Monoclonal Antibody Facility, QEII Medical Centre, 6 Verdun St, Nedlands, WA 6009, Australia
| | - Jacqueline Batley
- The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Michael Clarke
- Metabolomics Australia, Centre for Microscopy, Characterisation and Analysis (CMCA), The University of Western Australia, 35 Stirling Hwy, Nedlands WA 6009, Australia
| | - Laila Abudulai
- Metabolomics Australia, Centre for Microscopy, Characterisation and Analysis (CMCA), The University of Western Australia, 35 Stirling Hwy, Nedlands WA 6009, Australia
| | - Anita Severn-Ellis
- Department of Primary Industries and Regional Development, Government of Western Australia, Perth, WA 6000, Australia
| | - Cécile Dang
- The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
- Department of Primary Industries and Regional Development, Government of Western Australia, Perth, WA 6000, Australia
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Dutta T, Chakraborty B, Nigam A, Minocha S, Koner AL. A small-molecule probe to decipher stress-induced ER microenvironments and ER-Golgi communication. J Mater Chem B 2024. [PMID: 38808376 DOI: 10.1039/d4tb00572d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Cellular stress is a crucial factor in regulating and maintaining both organismal and microenvironmental homeostasis. It induces a response that also affects the micropolarity of specific cellular compartments, which is essential for early disease diagnosis. In this contribution, we present a quantitative study of micropolarity changes inside the endoplasmic reticulum (ER) during the G1/S and G2/M phases, using a biocompatible small-molecule fluorophore called ER-Oct. This probe is selectively driven to the ER by its hydrophobicity, and it has the fastest diffusion properties among a series of analogous probes. We found that induced ER stress caused cell cycle arrests leading to an increase in ER micropolarity which is well supported by lambda scanning experiments and fluorescence lifetime imaging microscopy (FLIM) as well. ER-Oct is a versatile staining agent that could effectively stain the ER in various living/fixed mammalian cells, isolated ER, Caenorhabditis elegans, and mice tissues. Furthermore, we used this probe to visualize a well-known biological event, ER to Golgi transport, by live-cell fluorescence microscopy. Our exhaustive investigation of micropolarity using ER-staining dye provides a new way to study ER stress, which could provide a deeper understanding of proteostasis in model systems and even in fixed patient samples.
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Affiliation(s)
- Tanoy Dutta
- Bionanotechnology Lab, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh - 462066, India.
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Barsha Chakraborty
- Bionanotechnology Lab, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh - 462066, India.
| | - Aditya Nigam
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi - 110016, India
| | - Shilpi Minocha
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi - 110016, India
| | - Apurba Lal Koner
- Bionanotechnology Lab, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh - 462066, India.
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Amado PSM, Lopes S, Brás EM, Paixão JA, Takano MA, Abe M, Fausto R, Cristiano MLS. Molecular and Crystal Structure, Spectroscopy, and Photochemistry of a Dispiro Compound Bearing the Tetraoxane Pharmacophore. Chemistry 2023; 29:e202301315. [PMID: 37343198 DOI: 10.1002/chem.202301315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/23/2023]
Abstract
The molecular structure and photochemistry of dispiro[cyclohexane-1,3'-[1,2,4,5]tetraoxane-6',2''-tricyclo[3.3.1.13,7 ]decan]-4-one (TX), an antiparasitic 1,2,4,5-tetraoxane was investigated using matrix isolation IR and EPR spectroscopies, together with quantum chemical calculations undertaken at the DFT(B3LYP)/6-311++G(3df,3pd) level of theory, with and without Grimme's dispersion correction. Photolysis of the matrix-isolated TX, induced by in situ broadband (λ>235 nm) or narrowband (λ in the range 220-263 nm) irradiation, led to new bands in the infrared spectrum that could be ascribed to two distinct photoproducts, oxepane-2,5-dione, and 4-oxohomoadamantan-5-one. Our studies show that these photoproducts result from initial photoinduced cleavage of an O-O bond, with the formation of an oxygen-centered diradical that regioselectivity rearranges to a more stable (secondary carbon-centered)/(oxygen-centered) diradical, yielding the final products. Formation of the diradical species was confirmed by EPR measurements, upon photolysis of the compound at λ=266 nm, in acetonitrile ice (T=10-80 K). Single-crystal X-ray diffraction (XRD) studies demonstrated that the TX molecule adopts nearly the same conformation in the crystal and matrix-isolation conditions, revealing that the intermolecular interactions in the TX crystal are weak. This result is in keeping with observed similarities between the infrared spectrum of the crystalline material and that of matrix-isolated TX. The detailed structural, vibrational, and photochemical data reported here appear relevant to the practical uses of TX in medicinal chemistry, considering its efficient and broad parasiticidal properties.
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Affiliation(s)
- Patrícia S M Amado
- Center of Marine Sciences, CCMAR, Gambelas Campus, University of Algarve UAlg, 8005-139, Faro, Portugal
- Department of Chemistry and Pharmacy Faculty of Sciences and Technology, Gambelas Campus, University of Algarve UAlg, 8005-139, Faro, Portugal
| | - Susy Lopes
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Elisa M Brás
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - José A Paixão
- CFisUC, Department of Physics, University of Coimbra, 3004-516, Coimbra, Portugal
| | - Ma-Aya Takano
- Department of Chemistry Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima, Hiroshima, 739-8526, Japan
- International Institute for Sustainability with Knotted Chiral Meta Matter (SKCM2) Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Manabu Abe
- Department of Chemistry Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima, Hiroshima, 739-8526, Japan
- International Institute for Sustainability with Knotted Chiral Meta Matter (SKCM2) Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Rui Fausto
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
- Faculty of Sciences and Letters, Department of Physics, Istanbul Kultur University Ataköy Campus, Bakirköy, 34156, Istanbul, Turkey
| | - Maria L S Cristiano
- Center of Marine Sciences, CCMAR, Gambelas Campus, University of Algarve UAlg, 8005-139, Faro, Portugal
- Department of Chemistry and Pharmacy Faculty of Sciences and Technology, Gambelas Campus, University of Algarve UAlg, 8005-139, Faro, Portugal
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Meng Y, Ma N, Lyu H, Wong YK, Zhang X, Zhu Y, Gao P, Sun P, Song Y, Lin L, Wang J. Recent pharmacological advances in the repurposing of artemisinin drugs. Med Res Rev 2021; 41:3156-3181. [PMID: 34148245 DOI: 10.1002/med.21837] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 02/27/2021] [Accepted: 05/21/2021] [Indexed: 12/18/2022]
Abstract
Artemisinins are a family of sesquiterpene lactones originally derived from the sweet wormwood (Artemisia annua). Beyond their well-characterized role as frontline antimalarial drugs, artemisinins have also received increased attention for other potential pharmaceutical effects, which include antiviral, antiparsitic, antifungal, anti-inflammatory, and anticancer activities. With concerted efforts in further preclinical and clinical studies, artemisinin-based drugs have the potential to be viable treatments for a great variety of human diseases. Here, we provide a comprehensive update on recent reports of pharmacological actions and applications of artemisinins outside of their better-known antimalarial role and highlight their potential therapeutic viability for various diseases.
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Affiliation(s)
- Yuqing Meng
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Nan Ma
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Haining Lyu
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yin Kwan Wong
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Xing Zhang
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yongping Zhu
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Peng Gao
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Peng Sun
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yali Song
- Center for Reproductive Medicine, Dongguan Maternal And Child Health Care Hospital, Southern Medical University, Dongguan, China
| | - Lizhu Lin
- Oncology Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jigang Wang
- Artemisinin Research Center and the Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.,Oncology Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Central People's Hospital of Zhanjiang, Zhanjiang, Guangdong, China.,Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.,Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
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Medkour H, Bitam I, Laidoudi Y, Lafri I, Lounas A, Hamidat HK, Mekroud A, Varloud M, Davoust B, Mediannikov O. Potential of Artesunate in the treatment of visceral leishmaniasis in dogs naturally infected by Leishmania infantum: Efficacy evidence from a randomized field trial. PLoS Negl Trop Dis 2020; 14:e0008947. [PMID: 33338041 PMCID: PMC7781483 DOI: 10.1371/journal.pntd.0008947] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/04/2021] [Accepted: 11/03/2020] [Indexed: 12/19/2022] Open
Abstract
Leishmaniasis is among the world’s most neglected diseases. Dogs are the main reservoirs/hosts of Leishmania infantum, causative agent of both canine and human visceral leishmaniosis. Canine leishmaniasis (CanL) represents a public health problem as one of the most prevalent zoonotic diseases worldwide. Current therapeutics present drawbacks; thus, there is a need for more effective, safer, and cheaper drugs. The aim of this study was to evaluate and to compare the efficacy of oral administration of artesunate or meglumine antimoniate/allopurinol in dogs with clinical leishmaniasis. Forty-two dogs with naturally occurring clinical leishmaniasis were included in this open-label, simple randomized positive-control clinical field trial with 6 months of follow-up. Dogs received meglumine antimoniate 100 mg/kg/day and allopurinol 30 mg/kg/day for 28 days (control group, n = 26) or artesunate 25 mg/kg/day for 6 days (test group, n = 16). The animals were evaluated for their clinical evolution, parasite load (by qPCR) and humoral response at different time points: 0, 30, 90, and 180 days after treatment. Data analyses showed a significant improvement in both groups in clinical scores, parasitemia and antibody titers after treatment. Compared to the control group, the artesunate group showed significantly lower clinical score (P = 0.0001), lower parasitemia (P = 0.0001) and antibody titers after 6 months of follow-up. Compared to baseline values, a rapid, significant reduction (P < 0.012) in antibody levels, 2.28- versus 3.04-fold for the control versus artesunate groups, respectively, was observed 30 days after treatment. Antibody levels continued to decrease further in the artesunate group, where 58% of cases became seronegative at the 6-month follow-up. All qPCR-positive dogs were negative after treatment with artesunate, while 14.3% remained positive with the appearance of two new cases in the control group. Artesunate was well tolerated, and no side effects were recorded. Treatment failures were similar in both groups with 27.27% (6/22), including 18.18% (4/22) mortality in the control group, versus 26.66% (4/15), including 13.33% (2/15) mortality in the artesunate group. This is the first report showing the potential of artesunate in the treatment of dogs with clinical leishmaniasis. Artesunate showed higher efficacy than the current first-line treatment for CanL without any adverse effects. It could be a good alternative chemotherapy for CanL, and may be considered for further studies in human leishmaniases. Further clinical trials are needed to confirm these findings, to determine if there are relapses after treatment and if dogs remain infective to sandflies, to define the ideal therapeutic dosage and duration of treatment with artesunate. Canine leishmaniasis (CanL) is a fatal, zoonotic vector-borne disease caused by Leishmania infantum, a common pathogen for both humans and dogs. Most CanL therapeutics are toxic, expensive, or ineffective. Artemisinin and derivatives have recently demonstrated potent antileishmanial activity in vitro and in experimental models. In this study, dogs with clinical leishmaniasis were randomly included in one of the treatment groups: meglumine antimoniate/allopurinol (control) or artesunate (alternative). Dogs were followed up for 6 months for their clinical score, parasitemia and Leishmania antibody levels. Both groups showed improved clinical scores, parasitemia and antibody titers after treatment. After six months of follow-up, treatment success was very similar in both groups, and 72.73% (16/22) of the controls versus 73.34% (11/15) in the artesunate group had clinical improvement. All dogs initially seropositive by PCR became negative after artesunate treatment, while 14.3% remained positive with the appearance of new cases in the control group. Antibody titers decreased rapidly (from day 30) from baseline especially in the artesunate group, where 58% of the dogs converted to seronegative after 6 months. Artesunate could be a good alternative for treatment of leishmaniasis. Additional clinical trials are needed to obtain more data on this drug.
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Affiliation(s)
- Hacène Medkour
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Univ., IRD, AP-HM, MEPHI, Marseille, France
- PADESCA Laboratory, Veterinary Science Institute, University Constantine 1, El Khroub, Algeria
| | - Idir Bitam
- Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
- Superior School of Food Sciences and Food Industries of Algiers, Algeria
| | - Younes Laidoudi
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Univ., IRD, AP-HM, MEPHI, Marseille, France
- PADESCA Laboratory, Veterinary Science Institute, University Constantine 1, El Khroub, Algeria
| | - Ismail Lafri
- Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
- Institute of Veterinary Sciences, University of Blida 1, Algeria
- Laboratory of Biotechnology related to Animal Reproduction (LBRA), University of Blida, Blida, Algeria
| | - Abdelaziz Lounas
- Institute of Veterinary Sciences, University of Blida 1, Algeria
- Laboratory of Biotechnology related to Animal Reproduction (LBRA), University of Blida, Blida, Algeria
| | - Hamza Karim Hamidat
- Department of Biology, Faculty of Sciences, University of Boumerdes, Algeria
| | - Abdeslam Mekroud
- PADESCA Laboratory, Veterinary Science Institute, University Constantine 1, El Khroub, Algeria
| | | | - Bernard Davoust
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Univ., IRD, AP-HM, MEPHI, Marseille, France
| | - Oleg Mediannikov
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Univ., IRD, AP-HM, MEPHI, Marseille, France
- * E-mail:
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Brás EM, Cabral LIL, Amado PSM, Abe M, Fausto R, Cristiano MLS. Photoinduced Reactivity in a Dispiro-1,2,4-trioxolane: Adamantane Ring Expansion and First Direct Observation of the Long-Lived Triplet Diradical Intermediates. J Phys Chem A 2020; 124:4202-4210. [DOI: 10.1021/acs.jpca.0c01974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elisa M. Brás
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus Gambelas, Faro 8005-139, Portugal
- CQC, Department of Chemistry, University of Coimbra, Coimbra 3004-531, Portugal
| | - Lília I. L. Cabral
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus Gambelas, Faro 8005-139, Portugal
- Departamento de Química e Farmácia, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, Faro 8005-139, Portugal
| | - Patrícia S. M. Amado
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus Gambelas, Faro 8005-139, Portugal
- Departamento de Química e Farmácia, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, Faro 8005-139, Portugal
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, Hiroshima 739-8511, Japan
| | - Rui Fausto
- CQC, Department of Chemistry, University of Coimbra, Coimbra 3004-531, Portugal
| | - Maria L. S. Cristiano
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus Gambelas, Faro 8005-139, Portugal
- Departamento de Química e Farmácia, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, Faro 8005-139, Portugal
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Hasanuzzaman AFM, Cao A, Ronza P, Fernández-Boo S, Rubiolo JA, Robledo D, Gómez-Tato A, Alvarez-Dios JA, Pardo BG, Villalba A, Martínez P. New insights into the Manila clam - Perkinsus olseni interaction based on gene expression analysis of clam hemocytes and parasite trophozoites through in vitro challenges. Int J Parasitol 2020; 50:195-208. [PMID: 32087247 DOI: 10.1016/j.ijpara.2019.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 11/13/2019] [Accepted: 11/29/2019] [Indexed: 11/30/2022]
Abstract
The Manila clam (Ruditapes philippinarum) is the bivalve species with the highest global production from both fisheries and aquaculture, but its production is seriously threatened by perkinsosis, a disease caused by the protozoan parasite Perkinsus olseni. To understand the molecular mechanisms underlying R. philippinarum-P. olseni interactions, we analysed the gene expression profiles of in vitro challenged clam hemocytes and P. olseni trophozoites, using two oligo-microarray platforms, one previously validated for R. philippinarum hemocytes and a new one developed and validated in this study for P. olseni. Manila clam hemocytes were in vitro challenged with trophozoites, zoospores, and extracellular products from P. olseni in vitro cultures, while P. olseni trophozoites were in vitro challenged with Manila clam plasma along the same time-series (1 h, 8 h, and 24 h). The hemocytes showed a fast activation of the innate immune response, particularly associated with hemocyte recruitment, in the three types of challenges. Nevertheless, different immune-related pathways were activated in response to the different parasite stages, suggesting specific recognition mechanisms. Furthermore, the analyses provided useful complementary data to previous in vivo challenges, and confirmed the potential of some proposed biomarkers. The combined analysis of gene expression in host and parasite identified several processes in both the clam and P. olseni, such as redox and glucose metabolism, protease activity, apoptosis and iron metabolism, whose modulation suggests cross-talk between parasite and host. This information might be critical to determine the outcome of the infection, thus highlighting potential therapeutic targets. Altogether, the results of this study aid understanding the response and interaction between R. philippinarum and P. olseni, and will contribute to developing effective control strategies for this threatening parasitosis.
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Affiliation(s)
- Abul Farah Md Hasanuzzaman
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Universidade de Santiago de Compostela, 27002 Lugo, Spain; Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
| | - Asunción Cao
- Centro de Investigacións Mariñas (CIMA), Consellería do Mar, Xunta de Galicia, 36620 Vilanova de Arousa, Spain
| | - Paolo Ronza
- Departamento de Anatomía, Produción Animal e Ciencias Clínicas Veterinarias, Universidade de Santiago de Compostela, Lugo 27002, Spain
| | - Sergio Fernández-Boo
- Centro de Investigacións Mariñas (CIMA), Consellería do Mar, Xunta de Galicia, 36620 Vilanova de Arousa, Spain; Centro Interdisciplinar de Investigação Marinha e Ambiental(CIIMAR), University of Porto, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - Juan Andrés Rubiolo
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Diego Robledo
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Universidade de Santiago de Compostela, 27002 Lugo, Spain; The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian EH25 9RG, UK
| | - Antonio Gómez-Tato
- Departamento de Xeometría e Topoloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jose Antonio Alvarez-Dios
- Departamento de Matemática Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Belén G Pardo
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Universidade de Santiago de Compostela, 27002 Lugo, Spain; Instituto de Acuicultura, Universidade de Santiago de Compostela, Campus Vida s/n, Santiago de Compostela 15782, Spain
| | - Antonio Villalba
- Centro de Investigacións Mariñas (CIMA), Consellería do Mar, Xunta de Galicia, 36620 Vilanova de Arousa, Spain; Departamento de Ciencias de la Vida, Universidad de Alcalá, 28871 Alcalá de Henares, Spain; Research Centre for Experimental Marine Biology and Biotechnology, Plentzia Marine Station (PIE-UPV/EHU), University of the Basque Country, 48620 Plentzia, Spain
| | - Paulino Martínez
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Universidade de Santiago de Compostela, 27002 Lugo, Spain; Instituto de Acuicultura, Universidade de Santiago de Compostela, Campus Vida s/n, Santiago de Compostela 15782, Spain.
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Synthesis and Antileishmanial Activity of 1,2,4,5-Tetraoxanes against Leishmania donovani. Molecules 2020; 25:molecules25030465. [PMID: 31979089 PMCID: PMC7038143 DOI: 10.3390/molecules25030465] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/14/2020] [Accepted: 01/20/2020] [Indexed: 12/14/2022] Open
Abstract
A chemically diverse range of novel tetraoxanes was synthesized and evaluated in vitro against intramacrophage amastigote forms of Leishmania donovani. All 15 tested tetraoxanes displayed activity, with IC50 values ranging from 2 to 45 µm. The most active tetraoxane, compound LC140, exhibited an IC50 value of 2.52 ± 0.65 µm on L. donovani intramacrophage amastigotes, with a selectivity index of 13.5. This compound reduced the liver parasite burden of L. donovani-infected mice by 37% after an intraperitoneal treatment at 10 mg/kg/day for five consecutive days, whereas miltefosine, an antileishmanial drug in use, reduced it by 66%. These results provide a relevant basis for the development of further tetraoxanes as effective, safe, and cheap drugs against leishmaniasis.
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Duarte SS, de Moura RO, da Silva PM. Effect of antiprotozoal molecules on hypnospores of Perkinsus spp. parasite. Exp Parasitol 2018; 192:25-35. [PMID: 30028986 DOI: 10.1016/j.exppara.2018.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/30/2018] [Accepted: 07/15/2018] [Indexed: 11/19/2022]
Abstract
Perkinsus protozoan parasites have been associated with high mortality of bivalves worldwide, including Brazil. The use of antiproliferative drugs to treat the Perkinsosis is an unusual prophylactic strategy. However, because of their environment impact it could be used to control parasite proliferation in closed system, such as hatchery. This study evaluated the anti-Perkinsus activity potential of synthesized and commercial compounds. Viability of hypnospores of Perkinsus spp. was assessed in vitro. Cells were incubated with three 2-amino-thiophene (6AMD, 6CN, 5CN) and one acylhydrazone derivatives (AMZ-DCL), at the concentrations of 31.25; 62.5; 125; 250 and 500 μM and one commercial chlorinated phenoxy phenol derivative, triclosan (2, 5, 10 and 20 μM), for 24-48 h. Two synthetic molecules (6CN and AMZ-DCL) caused a significant decline (38 and 39%, respectively) in hypnospores viability, at the highest concentration (500 μM), after 48 h. Triclosan was the most cytotoxic compound, causing 100% of mortality at 20 μM after 24 h and at 10 μM after 48 h. Cytotoxic effects of the compounds 6CN, AMZ-DCL, and triclosan were investigated by measuring parasite's zoosporulation, morphological changes and metabolic activities (esterase activity, production of reactive oxygen species and lipid content). Results showed that zoosporulation occurred in few cell. Triclosan caused changes in the morphology of hypnospores. The 6CN and AMZ-DCL did not alter the metabolic activities studied whilst Triclosan significantly increased the production of reactive oxygen species and changed the amount and distribution of lipids in the hypnospores. These results suggest that three compounds had potential to be used as antiprotozoal drugs, although further investigation of their mechanism of action must be enlightened.
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Affiliation(s)
- Sâmia Sousa Duarte
- Laboratório de Imunologia e Patologia de Invertebrados, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba -Campus I, 58051-900, João Pessoa, PB, Brazil.
| | - Ricardo Olímpio de Moura
- Laboratório de Síntese e Vetorização de Moléculas, Departamento de Farmácia, Universidade Estadual da Paraíba, 58070-450, João Pessoa, PB, Brazil.
| | - Patricia Mirella da Silva
- Laboratório de Imunologia e Patologia de Invertebrados, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba -Campus I, 58051-900, João Pessoa, PB, Brazil.
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Hasanuzzaman AFM, Robledo D, Gómez-Tato A, Alvarez-Dios JA, Harrison PW, Cao A, Fernández-Boo S, Villalba A, Pardo BG, Martínez P. De novo transcriptome assembly of Perkinsus olseni trophozoite stimulated in vitro with Manila clam (Ruditapes philippinarum) plasma. J Invertebr Pathol 2016; 135:22-33. [DOI: 10.1016/j.jip.2016.01.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 01/18/2016] [Accepted: 01/24/2016] [Indexed: 12/13/2022]
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11
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Cortes S, Albuquerque A, Cabral LIL, Lopes L, Campino L, Cristiano MLS. In Vitro Susceptibility of Leishmania infantum to Artemisinin Derivatives and Selected Trioxolanes. Antimicrob Agents Chemother 2015; 59:5032-5. [PMID: 26014947 PMCID: PMC4505222 DOI: 10.1128/aac.00298-15] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 05/18/2015] [Indexed: 11/20/2022] Open
Abstract
Leishmaniasis is among the world's most neglected diseases. Currently available drugs for treatment present drawbacks, urging the need for more effective, safer, and cheaper drugs. A small library of artemisinin-derived trioxanes and synthetic trioxolanes was tested against promastigote and intramacrophage amastigote forms of Leishmania infantum. The trioxolanes LC50 and LC95 presented the best activity and safety profiles, showing potential for further studies in the context of leishmanial therapy. Our results indicate that the compounds tested exhibit peroxide-dependent activity.
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Affiliation(s)
- Sofia Cortes
- Global Health and Tropical Medicine (GHTM), Unidade de Ensino e Investigação de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal Centro de Malária e Outras Doenças Tropicais, IHMT, UNL, Lisbon, Portugal
| | - Andreia Albuquerque
- Global Health and Tropical Medicine (GHTM), Unidade de Ensino e Investigação de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal
| | - Lília I L Cabral
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve (UAlg), Campus de Gambelas, Faro, Portugal Departamento de Química e Farmácia, UAlg, Campus de Gambelas, Faro, Portugal
| | - Liliana Lopes
- Global Health and Tropical Medicine (GHTM), Unidade de Ensino e Investigação de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal Departamento Ciências Biomédicas e Medicina, UAlg, Campus de Gambelas, Faro, Portugal
| | - Lenea Campino
- Global Health and Tropical Medicine (GHTM), Unidade de Ensino e Investigação de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal Departamento de Química e Farmácia, UAlg, Campus de Gambelas, Faro, Portugal Departamento Ciências Biomédicas e Medicina, UAlg, Campus de Gambelas, Faro, Portugal
| | - Maria L S Cristiano
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve (UAlg), Campus de Gambelas, Faro, Portugal Departamento de Química e Farmácia, UAlg, Campus de Gambelas, Faro, Portugal
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12
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Fernández Robledo JA, Vasta GR, Record NR. Protozoan parasites of bivalve molluscs: literature follows culture. PLoS One 2014; 9:e100872. [PMID: 24955977 PMCID: PMC4067406 DOI: 10.1371/journal.pone.0100872] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 05/30/2014] [Indexed: 11/18/2022] Open
Abstract
Bivalve molluscs are key components of the estuarine environments as contributors to the trophic chain, and as filter -feeders, for maintaining ecosystem integrity. Further, clams, oysters, and scallops are commercially exploited around the world both as traditional local shellfisheries, and as intensive or semi-intensive farming systems. During the past decades, populations of those species deemed of environmental or commercial interest have been subject to close monitoring given the realization that these can suffer significant decline, sometimes irreversible, due to overharvesting, environmental pollution, or disease. Protozoans of the genera Perkinsus, Haplosporidium, Marteilia, and Bonamia are currently recognized as major threats for natural and farmed bivalve populations. Since their identification, however, the variable publication rates of research studies addressing these parasitic diseases do not always appear to reflect their highly significant environmental and economic impact. Here we analyzed the peer- reviewed literature since the initial description of these parasites with the goal of identifying potential milestone discoveries or achievements that may have driven the intensity of the research in subsequent years, and significantly increased publication rates. Our analysis revealed that after initial description of the parasite as the etiological agent of a given disease, there is a time lag before a maximal number of yearly publications are reached. This has already taken place for most of them and has been followed by a decrease in publication rates over the last decade (20- to 30- year lifetime in the literature). Autocorrelation analyses, however, suggested that advances in parasite purification and culture methodologies positively drive publication rates, most likely because they usually lead to novel molecular tools and resources, promoting mechanistic studies. Understanding these trends should help researchers in prioritizing research efforts for these and other protozoan parasites, together with their development as model systems for further basic and translational research in parasitic diseases.
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Affiliation(s)
| | - Gerardo R. Vasta
- Department of Microbiology and Immunology, University of Maryland Baltimore, School of Medicine, Institute of Marine and Environmental Technology, Baltimore, Maryland, United States of America
| | - Nicholas R. Record
- Bigelow Laboratory for Ocean Sciences, Boothbay, Maine, United States of America
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