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Chen J, Hu X, Li G, Wan P, Shao Z, Jin E, Liu X, Yang Q, Long A, Qian Y. Investigation of Prototheca bovis Infection and Its Correlation with Dairy Herd Improvement Data from a Dairy Farm in Central China. Vet Sci 2024; 11:37. [PMID: 38250943 PMCID: PMC10820511 DOI: 10.3390/vetsci11010037] [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: 11/02/2023] [Revised: 12/25/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Prototheca bovis (P. bovis), an alga that has attracted considerable attention over the years as a causative microorganism of mastitis in dairy cows, exhibits limited susceptibility to specific aminoglycosides and antifungal agents, and no effective clinical treatment is currently available, thereby posing challenges for both prevention and treatment. To investigate the infection of P. bovis mastitis and its impact on raw milk production, a total of 348 raw milk samples were collected from August to December 2022 from a dairy farm in central China. P. bovis and other bacteria were detected, and the average infection rate of P. bovis in raw milk was 60.34% (210/348). The total number of colonies and the somatic cell count (SCC) of P. bovis positive samples were significantly higher than those of P. bovis negative samples (p < 0.01). The daily milk yield, 305-day milk yield, peak milk yield, and days to peak milk yield of the P. bovis positive samples were significantly lower than those of P. bovis negative samples (p < 0.01). A correlation analysis showed that P. bovis infection was negatively correlated with daily milk yield, 305-day milk yield, peak milk yield, and days to peak milk yield (p < 0.0001), while being positively correlated with the total number of colonies, SCC, milk loss, and protein percentage (p < 0.0001). These findings may help practitioners in comprehending the occurrence of Prototheca mastitis and developing more effective strategies for the prevention of P. bovis infections.
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Affiliation(s)
- Jie Chen
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
| | - Xiuxiu Hu
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
- College of Animal Science, Yangtze University, Jingzhou 434025, China
| | - Guohong Li
- Wuhan Keqian Biology Co., Ltd., Wuhan 430206, China;
| | - Pingmin Wan
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
| | - Zhiyong Shao
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
| | - Erguang Jin
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
| | - Xiaohua Liu
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
| | - Qian Yang
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Anying Long
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Yunguo Qian
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences, Wuhan 430208, China; (J.C.); (X.H.); (P.W.); (Z.S.); (E.J.); (X.L.); (Q.Y.); (A.L.)
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2
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Rivelli Zea SM, Itoh M, Toyotome T. Development of Loop-Mediated Isothermal Amplification for the Detection of Prototheca bovis Directly from Milk Samples of Dairy Cattle. Mycopathologia 2024; 189:1. [PMID: 38217777 DOI: 10.1007/s11046-023-00806-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 10/12/2023] [Indexed: 01/15/2024]
Abstract
Prototheca bovis is an algal emerging pathogen in dairy farms causing refractory protothecal mastitis with increasing incidence worldwide and significant economic impact. P. bovis infects cows throughout the lactation cycle, including dry periods, and can persist in the udder and the environment for a long time. Since P. bovis does not respond to treatments with antibiotics, the suggested sanitary measure to restrict the spread is culling infected animals. A point-of-care test for early detection of the causative agent is critically needed to guide farm management and the appropriate treatment of mastitis. Loop-mediated isothermal amplification (LAMP) is a highly specific molecular method, time-saving, cost-effective and easy to perform in limited settings. This study aimed to develop a LAMP assay for P. bovis detection directly from milk samples; it was employed in conjunction with a commercial DNA extraction kit which was previously used to extract DNA from milk specimens containing microbes. The LAMP assay detected P. bovis DNA within 1 h in milk samples spiked with P. bovis at a concentration of 50 cells/μL, enabling on-farm disease monitoring and decision-making based on a reliable diagnosis. The LAMP method will contribute to the accurate and rapid identification of P. bovis in asymptomatic or recurrent mastitis cases and consequently aid the implementation of targeted control measures and the reduction of losses in milk production.
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Affiliation(s)
- Sofia M Rivelli Zea
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan
| | - Megumi Itoh
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan
| | - Takahito Toyotome
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan.
- Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan.
- Medical Mycology Research Center, Chiba University, Chiba, Japan.
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3
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Vasco-Julio D, Huilca-Ibarra M, Ledesma Y, Echeverria G, Guerrero-Freire S, Jagielski T, Bastidas-Caldes C, de Waard JH. The Development of a Multiplex PCR Assay for Fast and Cost-Effective Identification of the Five Most Significant Pathogenic Prototheca Species. Pathogens 2023; 12:1018. [PMID: 37623978 PMCID: PMC10459208 DOI: 10.3390/pathogens12081018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023] Open
Abstract
A multiplex PCR system (m-PCR) has been developed to accurately differentiate the five most important pathogenic Prototheca species, including the three species associated with infection in dairy cattle (P. ciferrii, P. blaschkeae, and P. bovis) and the two species associated with human infections (P. wickerhamii and P. cutis). The method is low-cost since it employs a simple "heat-shock" method in a TE buffer for DNA extraction. Furthermore, it requires only primers, a Taq polymerase, an agarose gel, and a molecular weight marker for identification. The method was based on published Prototheca cytochrome B sequences and was evaluated using reference strains from each of the five Prototheca species. The validity of the method was confirmed by identifying 50 strains isolated from milk samples. The specificity was tested in silico and with experimental PCR trials, showing no cross-reactions with other Prototheca species, as well as with bacteria, fungi, cows, algae, animals, or humans. The method could detect mixed infections involving two or three Prototheca species, providing a rapid test that delivers results within three hours.
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Affiliation(s)
- David Vasco-Julio
- One Health Research Group, Universidad de Las Américas, Quito 170530, Ecuador; (D.V.-J.); (M.H.-I.); (Y.L.); (C.B.-C.)
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Unidad de Posgrado, Edificio D, Circuito de Posgrados, Ciudad Universitaria, Coyoacán C.P. 04510, Mexico
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca C.P. 62050, Mexico
| | - María Huilca-Ibarra
- One Health Research Group, Universidad de Las Américas, Quito 170530, Ecuador; (D.V.-J.); (M.H.-I.); (Y.L.); (C.B.-C.)
| | - Yanua Ledesma
- One Health Research Group, Universidad de Las Américas, Quito 170530, Ecuador; (D.V.-J.); (M.H.-I.); (Y.L.); (C.B.-C.)
| | - Gustavo Echeverria
- Instituto de Investigación en Zoonosis-CIZ, Universidad Central del Ecuador, Quito 170518, Ecuador;
- División Investigación y Desarrollo, BioGENA, Quito 170509, Ecuador
- Programa de Doctorado, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires C1063ACV, Argentina;
| | - Salome Guerrero-Freire
- Programa de Doctorado, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires C1063ACV, Argentina;
- Group of Emerging and Neglected Diseases, Ecoepidemiology and Biodiversity, Health Sciences Faculty, Universidad Internacional SEK, Quito 170521, Ecuador
| | - Tomasz Jagielski
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, 02-096 Warsaw, Poland
| | - Carlos Bastidas-Caldes
- One Health Research Group, Universidad de Las Américas, Quito 170530, Ecuador; (D.V.-J.); (M.H.-I.); (Y.L.); (C.B.-C.)
- INABIO—Instituto Nacional de Biodiversidad, Parque La Carolina, Quito 170135, Ecuador
| | - Jacobus H. de Waard
- One Health Research Group, Universidad de Las Américas, Quito 170530, Ecuador; (D.V.-J.); (M.H.-I.); (Y.L.); (C.B.-C.)
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Toyotome T, Matsui S. Analysis of Prototheca and yeast species isolated from bulk tank milk collected in Tokachi District, Japan. J Dairy Sci 2022; 105:8364-8370. [PMID: 35965121 DOI: 10.3168/jds.2022-21781] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 05/17/2022] [Indexed: 11/19/2022]
Abstract
Bovine mastitis, a major infectious disease affecting milking cows, leads to reduced milk yield and quality, reduced animal welfare, and an increased need for culling. Although its major causative agents are bacteria, yeast species and achlorophyllous algae of the Prototheca genus are well known as causative agents of bovine refractory mastitis. Nevertheless, few studies have analyzed specific yeasts and Prototheca in this context. Herein, we present survey data of yeast species and Prototheca species isolated from bulk tank milk in the Tokachi district of Japan from April 2020 through March 2021. The species of 276 isolates were determined. Yeast species accounted for 184 isolates, of which Pichia kudriavzevii was the most prevalent species. Regarding Prototheca species, only Prototheca bovis was isolated (92 isolates). Prototheca bovis and Pichia kudriavzevii were detected throughout the year and were detected repeatedly on the same farm. Kluyveromyces marxianus was the second most frequently isolated yeast species after Pichia kudriavzevii. Candida parapsilosis, the fourth most frequently isolated yeast species, was found discontinuously. Analysis of monthly data indicated that Kluyveromyces marxianus and Candida parapsilosis were mainly found during the winter and summer months, respectively. Candida akabanensis and Pichia cactophila were the third and fifth most frequently isolated yeast species, respectively. They were detected repeatedly in bulk tank milk samples from the same farms. Results obtained from bulk tank milk underscore the prevalence of these species. These study results are expected to contribute to the elucidation of problematic yeast and Prototheca species.
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Affiliation(s)
- Takahito Toyotome
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan; Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan; Medical Mycology Research Center, Chiba University, Chiba 260-8673, Japan.
| | - Shihori Matsui
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan
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Plieger T, Wolf M. 18S and ITS2 rDNA sequence-structure phylogeny of Prototheca (Chlorophyta, Trebouxiophyceae). Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00971-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractProtothecosis is an infectious disease caused by organisms currently classified within the green algal genus Prototheca. The disease can manifest as cutaneous lesions, olecranon bursitis or disseminated or systemic infections in both immunocompetent and immunosuppressed patients. Concerning diagnostics, taxonomic validity is important. Prototheca, closely related to the Chlorella species complex, is known to be polyphyletic, branching with Auxenochlorella and Helicosporidium. The phylogeny of Prototheca was discussed and revisited several times in the last decade; new species have been described. Phylogenetic analyses were performed using ribosomal DNA (rDNA) and partial mitochondrial cytochrome b (cytb) sequence data. In this work we use Internal Transcribed Spacer 2 (ITS2) as well as 18S rDNA data. However, for the first time, we reconstruct phylogenetic relationships of Prototheca using primary sequence and RNA secondary structure information simultaneously, a concept shown to increase robustness and accuracy of phylogenetic tree estimation. Using encoded sequence-structure data, Neighbor-Joining, Maximum-Parsimony and Maximum-Likelihood methods yielded well-supported trees in agreement with other trees calculated on rDNA; but differ in several aspects from trees using cytb as a phylogenetic marker. ITS2 secondary structures of Prototheca sequences are in agreement with the well-known common core structure of eukaryotes but show unusual differences in their helix lengths. An elongation of the fourth helix of some species seems to have occurred independently in the course of evolution.
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Oyebamiji OO, Corcoran AA, Navarro Pérez E, Ilori MO, Amund OO, Holguin FO, Boeing WJ. Lead tolerance and bioremoval by four strains of green algae from Nigerian fish ponds. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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LI J, CHEN X, JIN E, WANG G, WU L, SHAO Z, WAN P, HU C, LI J, CHEN J, DING M. A survey of Prototheca bovis infection in dairy farms of the Hubei province, China. J Vet Med Sci 2021; 83:1248-1255. [PMID: 34193721 PMCID: PMC8437709 DOI: 10.1292/jvms.21-0068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 06/10/2021] [Indexed: 11/22/2022] Open
Abstract
Bovine mastitis, caused by Prototheca bovis, has received much attention worldwide. To investigate the status of P. bovis infection in dairy farms of Hubei, we collected 1,158 milk samples and 90 environmental samples from 14 dairy farms of Hubei, China. The isolates were identified with traditional biological methods and molecular biological techniques, and their pathogenicity was tested through mice infection experiments. Isolates from 57 milk and 20 environmental samples were identified as P. bovis. The mice infection tests proved that the isolated P. bovis could cause mastitis in mice, manifesting as severe red swelling of the mammary glands. Histopathological analysis of tissue sections showed necrosis and nodules lesions formed in the infected mice mammary tissue, accompanied by macrophage and neutrophil infiltration. These results suggested the existence of pathogenic P. bovis in dairy farms of the Hubei province, China, with brewer's grains and fresh feces possibly playing important roles in the spread of this disease.
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Affiliation(s)
- Jialin LI
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
- College of Veterinary Medicine, Huazhong Agricultural
University, Wuhan, 430070, China
| | - Xiabing CHEN
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
| | - Erguang JIN
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
| | - Guiqiang WANG
- Livestock and Poultry Breeding Center of Hubei Province,
Wuhan 430070, China
| | - Lijun WU
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
| | - Zhiyong SHAO
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
| | - Pingmin WAN
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
| | - Changmin HU
- College of Veterinary Medicine, Huazhong Agricultural
University, Wuhan, 430070, China
| | - Junhua LI
- Wuhan Institute of Virology, Chinese Academy of Sciences,
Wuhan 430071, China
| | - Jie CHEN
- Institute of Animal Husbandry and Veterinary Science, Wuhan
Academy of Agricultural Sciences, Wuhan 430208, China
| | - Mingxing DING
- College of Veterinary Medicine, Huazhong Agricultural
University, Wuhan, 430070, China
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Lu Y, Zhang X, Ni F, Xia W. Cutaneous Protothecosis with Meningitis Due to Prototheca wickerhamii in an Immunocompetent Teenager: Case Report and Literature Review. Infect Drug Resist 2021; 14:2787-2794. [PMID: 34321895 PMCID: PMC8312625 DOI: 10.2147/idr.s320795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/25/2021] [Indexed: 12/01/2022] Open
Abstract
Human protothecosis is a rare infection caused by Prototheca spp., which are environmental achloric algae ubiquitously existing in nature. Members of the genus of Prototheca usually cause localized infection that affects the skin or wounds. Systemic infection is extremely rare and tends to occur in immunocompromised patients. Here, we report a case of cutaneous protothecosis and meningitis due to Prototheca wickerhamii in an immunocompetent teenager who obtained full-body tattoos at the time of infection. To the best of our knowledge, this is the first description of P. wickerhamii isolated from both skin tissue and cerebrospinal fluid. The data contained in this report will increase our understanding of this pathogen and elucidate the most optimal treatment.
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Affiliation(s)
- Yanfei Lu
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
| | - Xiaohui Zhang
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
| | - Fang Ni
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
| | - Wenying Xia
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
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9
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Severgnini M, Lazzari B, Capra E, Chessa S, Luini M, Bordoni R, Castiglioni B, Ricchi M, Cremonesi P. Genome sequencing of Prototheca zopfii genotypes 1 and 2 provides evidence of a severe reduction in organellar genomes. Sci Rep 2018; 8:14637. [PMID: 30279542 PMCID: PMC6168571 DOI: 10.1038/s41598-018-32992-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 09/12/2018] [Indexed: 01/07/2023] Open
Abstract
Prototheca zopfii (P. zopfii, class Trebouxiophyceae, order Chlorellales, family Chlorellaceae), a non-photosynthetic predominantly free-living unicellular alga, is one of the few pathogens belonging to the plant kingdom. This alga can affect many vertebrate hosts, sustaining systemic infections and diseases such as mastitis in cows. The aim of our work was to sequence and assemble the P. zopfii genotype 1 and genotype 2 mitochondrial and plastid genomes. Remarkably, the P. zopfii mitochondrial (38 Kb) and plastid (28 Kb) genomes are models of compaction and the smallest known in the Trebouxiophyceae. As expected, the P. zopfii genotype 1 and 2 plastid genomes lack all the genes involved in photosynthesis, but, surprisingly, they also lack those coding for RNA polymerases. Our results showed that plastid genes are actively transcribed in P. zopfii, which suggests that the missing RNA polymerases are substituted by nuclear-encoded paralogs. The simplified architecture and highly-reduced gene complement of the P. zopfii mitochondrial and plastid genomes are closer to those of P. stagnora and the achlorophyllous obligate parasite Helicosporidium than to those of P. wickerhamii or P. cutis. This similarity is also supported by maximum likelihood phylogenetic analyses inferences. Overall, the P. zopfii sequences reported here, which include nuclear genome drafts for both genotypes, will help provide both a deeper understanding of the evolution of Prototheca spp. and insights into the corresponding host/pathogen interactions.
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Affiliation(s)
- Marco Severgnini
- Institute of Biomedical Technologies, National Research Council (ITB-CNR), Segrate, Milan, Italy
| | - Barbara Lazzari
- PTP-Science Park, Lodi, Italy.,Institute of Agricultural Biology and Biotechnology, National Research Council (IBBA-CNR), Lodi, Italy
| | - Emanuele Capra
- Institute of Agricultural Biology and Biotechnology, National Research Council (IBBA-CNR), Lodi, Italy
| | - Stefania Chessa
- Institute of Agricultural Biology and Biotechnology, National Research Council (IBBA-CNR), Lodi, Italy
| | - Mario Luini
- Lombardy and Emilia Romagna Experimental Zootechnic Institute (IZSLER), Lodi, Italy
| | - Roberta Bordoni
- Institute of Biomedical Technologies, National Research Council (ITB-CNR), Segrate, Milan, Italy
| | - Bianca Castiglioni
- Institute of Agricultural Biology and Biotechnology, National Research Council (IBBA-CNR), Lodi, Italy
| | - Matteo Ricchi
- Lombardy and Emilia Romagna Experimental Zootechnic Institute (IZSLER), Piacenza, Italy.
| | - Paola Cremonesi
- Institute of Agricultural Biology and Biotechnology, National Research Council (IBBA-CNR), Lodi, Italy
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10
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cytb as a New Genetic Marker for Differentiation of Prototheca Species. J Clin Microbiol 2018; 56:JCM.00584-18. [PMID: 30068534 DOI: 10.1128/jcm.00584-18] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 07/21/2018] [Indexed: 11/20/2022] Open
Abstract
Achlorophyllous unicellular microalgae of the genus Prototheca (Trebouxiophyceae, Chlorophyta) are the only known plants that cause infections in both humans and animals, collectively referred to as protothecosis. Human protothecosis, most commonly manifested as cutaneous, articular, and disseminated disease, is primarily caused by Protothecawickerhamii, followed by Protothecazopfii and, sporadically, by Protothecacutis and Protothecamiyajii In veterinary medicine, however, P. zopfii is a major pathogen responsible for bovine mastitis, which is a predominant form of protothecal disease in animals. Historically, identification of Prototheca spp. has relied upon phenotypic criteria; these were later replaced by molecular typing schemes, including DNA sequencing. However, the molecular markers interrogated so far, mostly located in the ribosomal DNA (rDNA) cluster, do not provide sufficient discriminatory power to distinguish among all Prototheca spp. currently recognized. Our study is the first attempt to develop a fast, reliable, and specific molecular method allowing identification of all Prototheca spp. We propose the mitochondrial cytb gene as a new and robust marker for diagnostics and phylogenetic studies of the Prototheca algae. The cytb gene displayed important advantages over the rDNA markers. Not only did the cytb gene have the highest discriminatory capacity for resolving all Prototheca species, but it also performed best in terms of technical feasibility, understood as ease of amplification, sequencing, and multiple alignment analysis. Based on the species-specific polymorphisms in the partial cytb gene, we developed a fast and straightforward PCR-restriction fragment length polymorphism (RFLP) assay for identification and differentiation of all Prototheca species described so far. The newly proposed method is advocated to be a new gold standard in diagnostics of protothecal infections in human and animal populations.
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11
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In Vitro Activity of 30 Essential Oils against Bovine Clinical Isolates of Prototheca zopfii and Prototheca blaschkeae. Vet Sci 2018; 5:vetsci5020045. [PMID: 29695110 PMCID: PMC6024326 DOI: 10.3390/vetsci5020045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 11/17/2022] Open
Abstract
Protothecal mastitis poses an emergent animal health problem in dairy herds, with a high impact on dairy industries, causing heavy economic losses. Current methods of treating protothecal infections are ineffective, and no drug is licensed for use in cattle. The aim of the present study was to check the antialgal activity of 30 chemically defined essential oils (EOs) against Prototheca zopfii and Prototheca blaschkeae isolated from the milk of dairy cows with mastitis. A microdilution test was carried out to estimate the antialgal effectiveness of the selected chemically defined EOs. The microdilution test showed different degrees of inhibition among the examined Prototheca species. The activity of some of the examined EOs seem interesting. In particular, Citrus paradisi yielded the lowest minimal inhibitory concentration values (0.75%) for both algal species. P. zopfii appeared to be more sensitive to EOs in comparison to P. blaschkeae. The present study investigated the in vitro susceptibility of P. zopfii and P. blaschkeae to a wide range of EOs, obtained from different botanical families. Further investigations are necessary to evaluate the efficacy of EO-based formulations intended for the disinfection of both udder and milking products.
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12
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Morandi S, Cremonesi P, Povolo M, Capra E, Silvetti T, Castiglioni B, Ribeiro MG, Alves AC, da Costa GM, Luini M, Brasca M. Prototheca blaschkeae subsp. brasiliensis subsp. nov., isolated from cow milk. Int J Syst Evol Microbiol 2017; 67:3865-3871. [DOI: 10.1099/ijsem.0.002209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Stefano Morandi
- Institute of Sciences of Food Production, Italian National Research Council (CNR ISPA), Via Celoria 2, 20133 Milan, Italy
| | - Paola Cremonesi
- Institute of Agricultural Biology and Biotechnology, Italian National Research Council (CNR IBBA), Via Einstein, 26900 Lodi, Italy
| | - Milena Povolo
- Council for Agricultural Research and Economics – Research Centre for Animal Production and Aquaculture (CREA-ZA), Via Lombardo 11, 26900 Lodi, Italy
| | - Emanuele Capra
- Institute of Agricultural Biology and Biotechnology, Italian National Research Council (CNR IBBA), Via Einstein, 26900 Lodi, Italy
| | - Tiziana Silvetti
- Institute of Sciences of Food Production, Italian National Research Council (CNR ISPA), Via Celoria 2, 20133 Milan, Italy
| | - Bianca Castiglioni
- Institute of Agricultural Biology and Biotechnology, Italian National Research Council (CNR IBBA), Via Einstein, 26900 Lodi, Italy
| | - Márcio Garcia Ribeiro
- Department of Veterinary Hygiene and Public Health, Universidade Estadual Paulista (UNESP), 18618-681 Botucatu, state of São Paulo, Brazil
| | - Ana Carolina Alves
- Department of Veterinary Hygiene and Public Health, Universidade Estadual Paulista (UNESP), 18618-681 Botucatu, state of São Paulo, Brazil
| | - Geraldo Márcio da Costa
- Department of Veterinary Medicine, Federal University of Lavras, Larvas, 37200000, state of Minas Gerais, Brazil
| | - Mario Luini
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), Via Einstein, 26900 Lodi, Italy
| | - Milena Brasca
- Institute of Sciences of Food Production, Italian National Research Council (CNR ISPA), Via Celoria 2, 20133 Milan, Italy
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Alves AC, Capra E, Morandi S, Cremonesi P, Pantoja JCF, Langoni H, de Vargas APC, da Costa MM, Jagielski T, Bolaños CAD, Guerra ST, Ribeiro MG. In vitro algicidal effect of guanidine on Prototheca zopfii genotype 2 strains isolated from clinical and subclinical bovine mastitis. Lett Appl Microbiol 2017; 64:419-423. [PMID: 28349671 DOI: 10.1111/lam.12737] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 11/27/2022]
Abstract
Prototheca species have increasingly been reported to be opportunistic pathogens that cause mastitis in dairy herds, and it poses an emergent problem because at present, there are no effective therapies for the treatment of protothecal mastitis. This study investigated the in vitro algicidal effect of guanidine on 75 Prototheca zopfii genotype 2 strains isolated from 75 cases of clinical and subclinical bovine mastitis. All strains were susceptible to guanidine in vitro with minimal algaecide concentrations ranging from 0·001 to 0·035%. Guanidine is known to have a high microbicidal effect and is considered to be a new generation microbicidal compound. It is not toxic to human mucous membranes and conjunctivas at low concentrations and has been used as a disinfectant in swimming pools and as an antiseptic for human wounds. The algicidal action of guanidine at low concentrations indicates that it could be an alternative disinfectant or antiseptic for cleaning of the dairy environment and milking equipment, in pre- and postdipping solutions, in the chemical dry therapy of bovine teats and even in the intramammary therapy of P. zopfii infections. This is the first report of the in vitro algicidal effect of guanidine on P. zopfii strains of animal origin. SIGNIFICANCE AND IMPACT OF THE STUDY Prototheca zopfii genotype 2 is an opportunistic pathogen of bovine mastitis. To date, no effective therapies against protothecal mastitis have been developed. The in vitro algicidal effect of guanidine on 75 P. zopfii genotype 2 strains isolated from cows revealed that all of the isolates were susceptible to the compound at low concentrations, which indicates that guanidine may be used as an antiseptic/disinfectant for dairy milking equipment, in pre- and postdipping solutions, and as a chemical dry therapy or an intramammary therapy. This study describes the in vitro algicidal effect of guanidine on P. zopfii for the first time.
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Affiliation(s)
- A C Alves
- Department of Veterinary Hygiene and Public Health, UNESP-São Paulo State University, Botucatu, SP, Brazil
| | - E Capra
- Institute of Agricultural Biology and Biotechnology, National Research Council, Lodi, Italy
| | - S Morandi
- Institute of Sciences of Food Production, National Research Council, Milan, Italy
| | - P Cremonesi
- Institute of Agricultural Biology and Biotechnology, National Research Council, Lodi, Italy
| | - J C F Pantoja
- Department of Veterinary Hygiene and Public Health, UNESP-São Paulo State University, Botucatu, SP, Brazil
| | - H Langoni
- Department of Veterinary Hygiene and Public Health, UNESP-São Paulo State University, Botucatu, SP, Brazil
| | - A P C de Vargas
- Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - M M da Costa
- Federal University of São Francisco Valley, PE, Brazil
| | - T Jagielski
- Department of Applied Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - C A D Bolaños
- Department of Veterinary Hygiene and Public Health, UNESP-São Paulo State University, Botucatu, SP, Brazil
| | - S T Guerra
- Department of Veterinary Hygiene and Public Health, UNESP-São Paulo State University, Botucatu, SP, Brazil
| | - M G Ribeiro
- Department of Veterinary Hygiene and Public Health, UNESP-São Paulo State University, Botucatu, SP, Brazil
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14
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Morandi S, Cremonesi P, Capra E, Silvetti T, Decimo M, Bianchini V, Alves AC, Vargas AC, Costa GM, Ribeiro MG, Brasca M. Molecular typing and differences in biofilm formation and antibiotic susceptibilities among Prototheca strains isolated in Italy and Brazil. J Dairy Sci 2016; 99:6436-6445. [PMID: 27236754 DOI: 10.3168/jds.2016-10900] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 04/19/2016] [Indexed: 11/19/2022]
Abstract
Bovine mastitis caused by Prototheca is a serious and complex problem that accounts for high economic losses in the dairy industry. The main objective of this study was to identify and characterize at genetic level different Prototheca strains and provide the most complete data about protothecal antibiotic resistance. The study involves 46 isolates from Italian (13 strains) and Brazilian (33 strains) mastitic milk. These strains were identified by multiplex PCR and single strand conformation polymorphism analysis and characterized by randomly amplified polymorphic DNA (RAPD)-PCR. Moreover, biofilm production and antibiotic susceptibility were evaluated. Forty-two strains resulted as Prototheca zopfii genotype 2, whereas 4 isolates could belong to a potential new Prototheca species. The RAPD-PCR, performed with 3 primers (M13, OPA-4, and OPA-18), showed a notable heterogeneity among isolates and grouped the strains according to the species and geographical origin. Biofilm production was species-dependent and P. zopfii genotype 2 strains were classified as strong biofilm producers. In vitro antibiotic susceptibility tests indicated that Prototheca strains were susceptible to antibacterial drugs belonging to aminoglycosides group; the highest activity against Prototheca strains was observed in the case of colistin sulfate, gentamicin, and netilmicin (100% of susceptible strains). It is interesting to note that all the Italian P. zopfii genotype 2 strains showed lower minimum inhibitory concentration values than the Brazilian ones. Nisin showed more efficacy than lysozyme and potassium sorbate, inhibiting 31% of the strains. Results obtained in this study confirmed that RAPD-PCR is a rapid, inexpensive, and highly discriminating tool for Prototheca strains characterization and could give a good scientific contribution for better understanding the protothecal mastitis in dairy herd.
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Affiliation(s)
- S Morandi
- Institute of Sciences of Food Production, Italian National Research Council, 20133 Milan, Italy.
| | - P Cremonesi
- Institute of Agricultural Biology and Biotechnology, National Research Council, 26900 Lodi, Italy
| | - E Capra
- Institute of Agricultural Biology and Biotechnology, National Research Council, 26900 Lodi, Italy
| | - T Silvetti
- Institute of Sciences of Food Production, Italian National Research Council, 20133 Milan, Italy
| | - M Decimo
- Institute of Sciences of Food Production, Italian National Research Council, 20133 Milan, Italy
| | - V Bianchini
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), 26900 Lodi, Italy
| | - A C Alves
- Department of Veterinary Hygiene and Public Health, Universidade Estadual Paulista (UNESP), 18618-970 Botucatu, SP, Brazil
| | - A C Vargas
- Department of Preventive Veterinary Medicine, Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - G M Costa
- Department of Veterinary Medicine, Universidade Federal de Lavras, 37200000, Larvas, MG, Brazil
| | - M G Ribeiro
- Department of Veterinary Hygiene and Public Health, Universidade Estadual Paulista (UNESP), 18618-970 Botucatu, SP, Brazil
| | - M Brasca
- Institute of Sciences of Food Production, Italian National Research Council, 20133 Milan, Italy
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