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Islam MM, Farag E, Hassan MM, Enan KA, Mohammadi A, Aldiqs AK, Alhussain H, Al Musalmani E, Al-Zeyara AA, Al-Romaihi H, Yassine HM, Sultan AA, Bansal D, Mkhize-Kwitshana Z. Rodent-borne parasites in Qatar: A possible risk at the human-animal-ecosystem interface. One Health 2024; 18:100708. [PMID: 38496338 PMCID: PMC10944255 DOI: 10.1016/j.onehlt.2024.100708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 01/16/2024] [Accepted: 03/06/2024] [Indexed: 03/19/2024] Open
Abstract
Rodents are known reservoirs for a diverse group of zoonotic pathogens that can pose a threat to human health. Therefore, it is crucial to investigate these pathogens to institute prevention and control measures. To achieve this, the current study was conducted to investigate the frequency of different parasites in commensal rodents in Qatar. A total of 148 rodents, including Rattus norvegicus, Rattus rattus, and Mus musculus were captured using traps placed in different habitats such as agricultural and livestock farms, residential areas, and other localities. Blood, feces, ectoparasite, and visceral organs were collected for gross, microscopic, immunological, and molecular analysis. The study identified 10 different parasites, including Capillaria annulosa, Eimeria spp., Giardia spp., Hymenolepis diminuta, Mastophorus muris, Ornithonyssus bacoti, Taenia taeniaeformis, Toxoplasma gondii, Trypanosoma lewisi, and Xenopsylla astia. Overall, 62.2% of the rodents tested positive for at least one parasite species. Helminths were found to be the most prevalent parasites (46.0%), followed by ectoparasites (31.8%), and protozoa (10.1%). However, individually, X. astia was the most prevalent (31.8%), whereas C. annulosa was the least common (0.7%). The prevalence of X. astia and H. diminuta significantly differed between habitats (p < 0.05). The sequence analysis of Hymenolepis spp. was closely related to the previously reported H. diminuta in Iran, China, and Mexico. In conclusion, the study identified a diverse range of rodent-borne parasites that are important to public health, with most of them being recorded for the first time among commensal rodents in Qatar.
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Affiliation(s)
- Md Mazharul Islam
- Department of Animal Resources, Ministry of Municipality, Doha, Qatar
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu Natal, Durban 4000, South Africa
| | - Elmoubashar Farag
- Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Mohammad Mahmudul Hassan
- Queensland Alliance for One Health Sciences, School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia
- Faculty of Veterinary Medicine, Chottogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225, Bangladesh
| | - Khalid A. Enan
- Preventive Reference Laboratory, Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Ali Mohammadi
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran 1417613151, Iran
- National Reference Laboratory for Plague, Tularemia and Q Fever, Research Centre for Emerging and Reemerging Infection Diseases, Pasteur Institute of Iran, Akanlu, Kabudar Ahang, Hamadan 6556153145, Iran
| | | | | | | | | | - Hamad Al-Romaihi
- Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | | | - Ali A. Sultan
- Department of Microbiology and Imunology, Weill Cornell Medicine, Cornell University, Doha, Qatar
| | - Devendra Bansal
- Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Zilungile Mkhize-Kwitshana
- School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu Natal, Durban 4000, South Africa
- South African Medical Research Council, Cape Town 7505, South Africa
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Shukla R, Soni J, Kumar A, Pandey R. Uncovering the diversity of pathogenic invaders: insights into protozoa, fungi, and worm infections. Front Microbiol 2024; 15:1374438. [PMID: 38596382 PMCID: PMC11003270 DOI: 10.3389/fmicb.2024.1374438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/13/2024] [Indexed: 04/11/2024] Open
Abstract
Post COVID-19, there has been renewed interest in understanding the pathogens challenging the human health and evaluate our preparedness towards dealing with health challenges in future. In this endeavour, it is not only the bacteria and the viruses, but a greater community of pathogens. Such pathogenic microorganisms, include protozoa, fungi and worms, which establish a distinct variety of disease-causing agents with the capability to impact the host's well-being as well as the equity of ecosystem. This review summarises the peculiar characteristics and pathogenic mechanisms utilized by these disease-causing organisms. It features their role in causing infection in the concerned host and emphasizes the need for further research. Understanding the layers of pathogenesis encompassing the concerned infectious microbes will help expand targeted inferences with relation to the cause of the infection. This would strengthen and augment benefit to the host's health along with the maintenance of ecosystem network, exhibiting host-pathogen interaction cycle. This would be key to discover the layers underlying differential disease severities in response to similar/same pathogen infection.
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Affiliation(s)
- Richa Shukla
- Division of Immunology and Infectious Disease Biology, INGEN-HOPE (INtegrative GENomics of HOst-PathogEn) Laboratory, CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India
| | - Jyoti Soni
- Division of Immunology and Infectious Disease Biology, INGEN-HOPE (INtegrative GENomics of HOst-PathogEn) Laboratory, CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Ashish Kumar
- Division of Immunology and Infectious Disease Biology, INGEN-HOPE (INtegrative GENomics of HOst-PathogEn) Laboratory, CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India
| | - Rajesh Pandey
- Division of Immunology and Infectious Disease Biology, INGEN-HOPE (INtegrative GENomics of HOst-PathogEn) Laboratory, CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Kim HJ, Han B, Lee HI, Ju JW, Shin HI. Current Status of Trypanosoma grosi and Babesia microti in Small Mammals in the Republic of Korea. Animals (Basel) 2024; 14:989. [PMID: 38612228 PMCID: PMC11010837 DOI: 10.3390/ani14070989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/13/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
Small mammals, such as rodents and shrews, are natural reservoir hosts of zoonotic diseases, including parasitic protozoa. To assess the risk of rodent-borne parasitic protozoa in the Republic of Korea (ROK), this study investigated the status of parasitic protozoa, namely Trypanosoma, Babesia, and Theileria, in small mammals. In total, 331 blood samples from small mammals were analyzed for parasites using PCR and sequenced. Samples were positive for Trypanosoma grosi (23.9%; n = 79) and Babesia microti (10%; n = 33) but not Theileria. Small mammals from Seogwipo-si showed the highest infection rate of T. grosi (48.4%), while the highest B. microti infection rate was observed in those from Gangneung-si (25.6%). Sequence data revealed T. grosi to be of the AKHA strain. Phylogenetic analysis of B. microti revealed the US and Kobe genotypes. B. microti US-type-infected small mammals were detected throughout the country, but the Kobe type was only detected in Seogwipo-si. To our knowledge, this is the first nationwide survey that confirmed T. grosi and B. microti infections at the species level in small mammals in the ROK and identified the Kobe type of B. microti. These results provide valuable information for further molecular epidemiological studies on these parasites.
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Affiliation(s)
| | | | | | | | - Hyun-Il Shin
- Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency, 187 Osongsaenmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju 28159, Republic of Korea; (H.J.K.); (B.H.); (H.-I.L.); (J.-W.J.)
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Hellebuyck T, Kotyk M, Solanes Vilanova F, Čepička I. The association of bacterial agents and flagellated protozoans in the etiopathogenesis of subspectacular abscesses in snakes. Vet Ophthalmol 2024. [PMID: 38491730 DOI: 10.1111/vop.13210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/14/2024] [Accepted: 03/06/2024] [Indexed: 03/18/2024]
Abstract
OBJECTIVES To describe the etiology, clinical pathology, and treatment of subspectacular abscesses (SAs) in 16 snakes. ANIMALS STUDIED Sixteen snakes from private captive collections that were presented at a veterinary teaching hospital and diagnosed with SAs. PROCEDURES Exudate was collected from SAs via percutaneous aspiration or by performing a partial spectaculectomy and submitted to direct light microscopic examination and/or microbiological examination. RESULTS Bacterial isolates were cultured from exudate samples in 12 out of 16 snakes and comprised Pseudomonas aeruginosa isolates that showed identical antimicrobial susceptibility patterns in seven cases. Direct light microscopic examination demonstrated the presence of flagellated protozoa in the exudate in 10 out of 16 snakes and in all of these snakes, concurrent oropharyngeal flagellated protozoan infection could be demonstrated. Combined flagellated protozoan and bacterial SA infection was demonstrated in six snakes. Comparison of small subunit ribosomal RNA gene sequences of flagellated protozoans that were detected in the exudate of SAs from four snakes revealed they represented the parabasalians Monocercomonas colubrorum and Hypotrichomonas acosta in one and three cases, respectively. In all snakes, successful treatment of the SAs was achieved following surgical debridement of the subspectacular space combined with antimicrobial treatment. CONCLUSION Bacteria as well as flagellates are considered to reach the subspectacular space through ascending infection from the oral cavity via the lacrimal duct. Although opportunistic bacterial infection presumably constitutes the predominant cause of SAs in snakes, the role of flagellate infection in the pathogenesis of this disorder should be further elucidated.
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Affiliation(s)
- Tom Hellebuyck
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Michael Kotyk
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Ferran Solanes Vilanova
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Ivan Čepička
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
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Crispim APC, Serafim MSM, Costa AO, Abrahão JS. Could giant viruses be considered as a biotechnological tool for preventing and controlling Acanthamoeba infections? J Appl Microbiol 2024; 135:lxae044. [PMID: 38373822 DOI: 10.1093/jambio/lxae044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/06/2024] [Accepted: 02/15/2024] [Indexed: 02/21/2024]
Abstract
AIM The aim of the study was to evaluate the efficiency of mimivirus as a potential therapeutic and prophylactic tool against Acanthamoeba castellanii, the etiological agent of Acanthamoeba keratitis, a progressive corneal infection, that is commonly associated with the use of contact lenses and can lead to blindness if not properly treated. METHODS AND RESULTS Mimivirus particles were tested in different multiplicity of infection, along with commercial multipurpose contact lenses' solutions, aiming to assess their ability to prevent encystment and excystment of A. castellanii. Solutions were evaluated for their amoebicidal potential and cytotoxicity in MDCK cells, as well as their effectiveness in preventing A. castellanii damage in Madin-Darby canine kidney (MDCK) cells. Results indicated that mimivirus was able to inhibit the formation of A. castellanii cysts, even in the presence of Neff encystment solution. Mimivirus also showed greater effectiveness in controlling A. castellanii excystment compared to commercial solutions. Additionally, mimivirus solution was more effective in preventing damage caused by A. castellanii, presented greater amoebicidal activity, and were less cytotoxic to MDCK cells than commercial MPS. CONCLUSIONS Mimivirus demonstrates a greater ability to inhibit A. castellanii encystment and excystment compared to commercial multipurpose contact lens solutions. Additionally, mimivirus is less toxic to MDCK cells than those commercial solutions. New studies utilizing in vivo models will be crucial for confirming safety and efficacy parameters.
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Affiliation(s)
- Ana Paula Correia Crispim
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Mateus Sá Magalhães Serafim
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Adriana Oliveira Costa
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Jônatas Santos Abrahão
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 31270-901, Brazil
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Abbaszadeh M, Lotfalizadeh N, Khedri J, Razmi G, Borji H. A survey of parasitic infections in Psittaciformes and Passeriformes in Mashhad, Iran. Vet Med Sci 2024; 10:e1372. [PMID: 38358077 PMCID: PMC10867878 DOI: 10.1002/vms3.1372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/18/2024] [Accepted: 01/29/2024] [Indexed: 02/16/2024] Open
Abstract
The health, growth and fertility of avian species can be negatively affected by parasite infection. This survey assesses the presence, variety and distribution of internal and external parasites among parrots and perching birds in Mashhad, Iran. This study examined 751 caged pet birds from different species and regions in Mashhad for faecal samples and 132 oral swabs for digestive tract parasites. Furthermore, skin scrapings were conducted on 14 canaries displaying dishevelled feathers. During the study, mortalities and moribund birds that had been referred underwent necropsies to examine internal parasites. Following the formol ether faecal examination, only one Malango parrot tested positive for Heterakoidea eggs among 751 faecal samples (0.13%). Further, one cockatiel showed evidence of parasitic infection with Eimeria spp. (0.13%). However, neither Cryptosporidium nor Giardia protozoa were detected in the samples (0%). Oral swabs revealed no evidence of Trichomonas (0%). On the other hand, skin scraping revealed the presence of the mite Dermanyssus in 7 out of 14 canaries with dishevelled feathers (50%). Of 25 moribund and weak budgerigars, 2 were infected with Acuaria in their proventriculus (8%). In addition, 3 out of 14 deceased myna birds carried the nematode Diplotriana in their coelomic cavities (21.42%). In conclusion, the rate of internal parasites has been relatively low in ornamental birds of Mashhad, whereas the prevalence of external parasites has been higher.
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Affiliation(s)
- Mojtaba Abbaszadeh
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Narges Lotfalizadeh
- Department of Clinical SciencesFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Javad Khedri
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Gholamreza Razmi
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Hassan Borji
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
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Wu QY, Ma R, Wang X, Ma YN, Wang ZS, Wei HL, Zhang XX. Effects of the invasion of Ralstonia solanacearum on soil microbial community structure in Wuhan, China. mSphere 2024; 9:e0066523. [PMID: 38231250 PMCID: PMC10900898 DOI: 10.1128/msphere.00665-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/13/2023] [Indexed: 01/18/2024] Open
Abstract
This study investigated the change in the microbiome of tomato rhizosphere soils after the invasion of Ralstonia solanacearum and analyzed the correlation between microbes and soil physicochemical properties. Diversity analyses of the bacteria in healthy and diseased rhizosphere soil samples (HRS and DRS) revealed that HRS had a higher species diversity and were compositionally different from DRS (P ≤ 0.05). Substantial differences in the relative abundance of Actinobacteria (37.52% vs 28.96%, P ≤ 0.05) and Proteobacteria (29.20% vs 35.59%, P ≤ 0.05) were identified in HRS and DRS, respectively. Taxonomic composition analysis showed ten differentially abundant genera, and seven of them (Gaiella, Roseisolibacter, Solirubrobacter, Kribbella, Acidibacter, Actinomarinicola, and Marmoricola) are more abundant in HRS. Soil pH and enzyme activities were negatively correlated with the abundance of R. solanacearum. The contents of total nitrogen (TN), total phosphorus (TP), total potassium (TK), alkaline nitrogen (alkaline N), available phosphorus (AP), available potassium (AK), NO3-N(NN), NH4+-N (AN), and organic matter (OM) were all significantly increased in DRS. The composition and richness of protozoa in the samples show significant differences. Cephalobus, Acrobeles, Heteromita, norank_Tylenchida, and Rotylenchulus were enriched in DRS. Microbial interaction networks revealed that the HRS networks were more complex than the DRS networks. Overall, the results of this study demonstrate that healthy soil has a more complex microbial community structure and higher enzyme activity, and the invasion of R. solanacearum damages the soil microbial system.IMPORTANCEHow does the invasion of Ralstonia solanacearum affect tomato rhizosphere bacteria and protozoa? Which microbial changes can affect the growth of R. solanacearum? To date, most research studies focus on bacteria, with little research on protozoa, and even less on the synergistic effects between protozoa and bacteria. Here, we analyzed the correlation between tomato rhizosphere bacterial and protozoan communities and soil physicochemical properties during the invasion of R. solanacearum. We found that the diversity and abundance of rhizosphere microorganisms in healthy rhizosphere soil samples (HRS) were significantly higher than those in diseased rhizosphere soil samples (DRS), and there were significant changes in soil pH and enzyme activity. Overall, in this study, the analysis of microbial changes during the invasion of R. solanacearum provides a theoretical basis for the prevention and control of bacterial wilt.
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Affiliation(s)
- Qian-Yu Wu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Rong Ma
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xing Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yi-Nan Ma
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhi-Shan Wang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Hai-Lei Wei
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiao-Xia Zhang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
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Herrera-Rodríguez D, Jareño-Moreno S, Buch-Cardona C, Mougeot F, Luque-Larena JJ, Vidal D. Water and mosquitoes as key components of the infective cycle of Francisella tularensis in Europe: a review. Crit Rev Microbiol 2024:1-15. [PMID: 38393764 DOI: 10.1080/1040841x.2024.2319040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 02/10/2024] [Indexed: 02/25/2024]
Abstract
Francisella tularensis is the pathogen of tularemia, a zoonotic disease that have a broad range of hosts. Its epidemiology is related to aquatic environments, particularly in the subspecies holarctica. In this review, we explore the role of water and mosquitoes in the epidemiology of Francisella in Europe. F. tularensis epidemiology has been linked to natural waters, where its persistence has been associated with biofilm and amebas. In Sweden and Finland, the European countries where most human cases have been reported, mosquito bites are a main route of transmission. F. tularensis is present in other European countries, but to date positive mosquitoes have not been found. Biofilm and amebas are potential sources of Francisella for mosquito larvae, however, mosquito vector capacity has not been demonstrated experimentally, with the need to be studied using local species to uncover a potential transmission adaptation. Transstadial, for persistence through life stages, and mechanical transmission, suggesting contaminated media as a source for infection, have been studied experimentally for mosquitoes, but their natural occurrence needs to be evaluated. It is important to clear up the role of different local mosquito species in the epidemiology of F. tularensis and their importance in all areas where tularemia is present.
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Affiliation(s)
- Daniel Herrera-Rodríguez
- Departamento de Microbiología, Facultad de Medicina, Universidad de Castilla la Mancha (UCLM), Ciudad Real, España
- Instituto de Investigación en Recursos Cinegéticos (IREC - CSIC, UCLM, JCCM), Ciudad Real, España
| | - Sara Jareño-Moreno
- Facultad de Veterinaria, Universidad Autónoma de Barcelona (UAB), Barcelona, España
| | - Clara Buch-Cardona
- Facultad de Biociencias, Universidad Autónoma de Barcelona (UAB), Barcelona, España
| | - François Mougeot
- Instituto de Investigación en Recursos Cinegéticos (IREC - CSIC, UCLM, JCCM), Ciudad Real, España
| | - Juan José Luque-Larena
- Departamento de Ciencias Agroforestales, E.T.S. Ingenierías Agrarias, Universidad de Valladolid (UVa), Palencia, España
- Sustainable Forest Management Research Institute (iuFOR), Universidad de Valladolid (UVa), Palencia, España
| | - Dolors Vidal
- Departamento de Microbiología, Facultad de Medicina, Universidad de Castilla la Mancha (UCLM), Ciudad Real, España
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Wang D, Jiang P, Wu X, Zhang Y, Wang C, Li M, Liu M, Yin J, Zhu G. Requirement of microtubules for secretion of a micronemal protein CpTSP4 in the invasive stage of the apicomplexan Cryptosporidium parvum. mBio 2024; 15:e0315823. [PMID: 38265238 PMCID: PMC10865969 DOI: 10.1128/mbio.03158-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 01/25/2024] Open
Abstract
The zoonotic Cryptosporidium parvum is a global contributor to infantile diarrheal diseases and opportunistic infections in immunocompromised or weakened individuals. Like other apicomplexans, it possesses several specialized secretory organelles, including micronemes, rhoptry, and dense granules. However, the understanding of cryptosporidial micronemal composition and secretory pathway remains limited. Here, we report a new micronemal protein in C. parvum, namely, thrombospondin (TSP)-repeat domain-containing protein-4 (CpTSP4), providing insights into these ambiguities. Immunostaining and enzyme-linked assays show that CpTSP4 is prestored in the micronemes of unexcysted sporozoites but secreted during sporozoite excystation, gliding, and invasion. In excysted sporozoites, CpTSP4 is also distributed on the two central microtubules unique to Cryptosporidium. The secretion and microtubular distribution could be completely blocked by the selective kinesin-5 inhibitors SB-743921 and SB-715992, resulting in the accumulation of CpTSP4 in micronemes. These support the kinesin-dependent microtubular trafficking of CpTSP4 for secretion. We also localize γ-tubulin, consistent with kinesin-dependent anterograde trafficking. Additionally, recombinant CpTSP4 displays nanomolar binding affinity to the host cell surface, for which heparin acts as one of the host ligands. A novel heparin-binding motif is identified and validated biochemically for its contribution to the adhesive property of CpTSP4 by peptide competition assays and site-directed mutagenesis. These findings shed light on the mechanisms of intracellular trafficking and secretion of a cryptosporidial micronemal protein and the interaction of a TSP-family protein with host cells.IMPORTANCECryptosporidium parvum is a globally distributed apicomplexan parasite infecting humans and/or animals. Like other apicomplexans, it possesses specialized secretory organelles in the zoites, in which micronemes discharge molecules to facilitate the movement and invasion of zoites. Although past and recent studies have identified several proteins in cryptosporidial micronemes, our understanding of the composition, secretory pathways, and domain-ligand interactions of micronemal proteins remains limited. This study identifies a new micronemal protein, namely, CpTSP4, that is discharged during excystation, gliding, and invasion of C. parvum sporozoites. The CpTSP4 secretion depends on the intracellular trafficking on the two Cryptosporidium-unique microtubes that could be blocked by kinesin-5/Eg5 inhibitors. Additionally, a novel heparin-binding motif is identified and biochemically validated, which contributes to the nanomolar binding affinity of CpTSP4 to host cells. These findings indicate that kinesin-dependent microtubular trafficking is critical to CpTSP4 secretion, and heparin/heparan sulfate is one of the ligands for this micronemal protein.
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Affiliation(s)
- Dongqiang Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Peng Jiang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiaodong Wu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ying Zhang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Chenchen Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Meng Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Mingxiao Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jigang Yin
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Guan Zhu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
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10
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Wang M, Huang Z, Wu C, Yan S, Fang HT, Pan W, Tan QG, Pan K, Ji R, Yang L, Pan B, Wang P, Miao AJ. Stimulated Raman Scattering Microscopy Reveals Bioaccumulation of Small Microplastics in Protozoa from Natural Waters. Environ Sci Technol 2024; 58:2922-2930. [PMID: 38294405 DOI: 10.1021/acs.est.3c07486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Microplastics (MPs) are pollutants of global concern, and bioaccumulation determines their biological effects. Although microorganisms form a large fraction of our ecosystem's biomass and are important in biogeochemical cycling, their accumulation of MPs has never been confirmed in natural waters because current tools for field biological samples can detect only MPs > 10 μm. Here, we show that stimulated Raman scattering microscopy (SRS) can image and quantify the bioaccumulation of small MPs (<10 μm) in protozoa. Our label-free method, which differentiates MPs by their SRS spectra, detects individual and mixtures of different MPs (e.g., polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polystyrene, and poly(methyl methacrylate)) in protozoa. The ability of SRS to quantify cellular MP accumulation is similar to that of flow cytometry, a fluorescence-based method commonly used to determine cellular MP accumulation. Moreover, we discovered that protozoa in water samples from Yangtze River, Xianlin Wastewater Treatment Plant, Lake Taihu and the Pearl River Estuary accumulated MPs < 10 μm, but the proportion of MP-containing cells was low (∼2-5%). Our findings suggest that small MPs could potentially enter the food chain and transfer to organisms at higher trophic levels, posing environmental and health risks that deserve closer scrutiny.
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Affiliation(s)
- Mei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Zhiliang Huang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei Province 430074, China PRC
| | - Chao Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Shuai Yan
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei Province 430074, China PRC
| | - Hai-Tao Fang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Wei Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Qiao-Guo Tan
- Key Laboratory of the Coastal and Wetland Ecosystems of Ministry of Education, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China PRC
| | - Ke Pan
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China PRC
| | - Rong Ji
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Liuyan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
| | - Ping Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei Province 430074, China PRC
| | - Ai-Jun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China PRC
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11
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Hough I, O'Handley R, Speight N. Cryptosporidium-associated enteritis in captive koalas (Phascolarctos cinereus). Aust Vet J 2024. [PMID: 38342576 DOI: 10.1111/avj.13323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 12/20/2023] [Accepted: 01/21/2024] [Indexed: 02/13/2024]
Abstract
Cryptosporidium spp. sporadically infect a range of Australian native mammals including koalas, red kangaroos, eastern grey kangaroos, bilbies and brush tailed possums and can range from asymptomatic to fatal infections. Traditionally considered a disease of the young or immuno-compromised, and resulting in profuse diarrhoea in other species, here we report an atypical clinical syndrome associated with Cryptosporidium in a captive population of koalas. All affected animals were in-contact adults, and demonstrated anorexia, dehydration and abdominal pain in the absence of diarrhoea. Following euthanasia on welfare grounds, Cryptosporidium infection was confirmed postmortem in three of four symptomatic animals via faecal floatation and/or intestinal histopathology, with enteritis also diagnosed in the fourth koala. Further screening of the captive colony found the outbreak had been contained. Based on sequencing the cause of the infection was C. fayeri, but the source was undetermined. In conclusion, Cryptosporidium should be considered as a possible cause of generalised illness in koalas.
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Affiliation(s)
- I Hough
- School of Animal and Veterinary Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia
| | - R O'Handley
- School of Animal and Veterinary Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia
| | - N Speight
- School of Animal and Veterinary Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia
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12
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Veshkini A, Dengler F, Bachmann L, Liermann W, Helm C, Ulrich R, Delling C, Kühn C, Hammon HM. Cryptosporidium parvum infection alters the intestinal mucosa transcriptome in neonatal calves: implications for immune function. Front Immunol 2024; 15:1351427. [PMID: 38318169 PMCID: PMC10839036 DOI: 10.3389/fimmu.2024.1351427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/05/2024] [Indexed: 02/07/2024] Open
Abstract
One of the leading causes of infectious diarrhea in newborn calves is the apicomplexan protozoan Cryptosporidium parvum (C. parvum). However, little is known about its immunopathogenesis. Using next generation sequencing, this study investigated the immune transcriptional response to C. parvum infection in neonatal calves. Neonatal male Holstein-Friesian calves were either orally infected (N = 5) or not (CTRL group, N = 5) with C. parvum oocysts (gp60 subtype IIaA15G2R1) at day 1 of life and slaughtered on day 7 after infection. Total RNA was extracted from the jejunal mucosa for short read. Differentially expressed genes (DEGs) between infected and CTRL groups were assessed using DESeq2 at a false discovery rate < 0.05. Infection did not affect plasma immunohematological parameters, including neutrophil, lymphocyte, monocyte, leucocyte, thrombocyte, and erythrocyte counts as well as hematocrit and hemoglobin concentration on day 7 post infection. The immune-related DEGs were selected according to the UniProt immune system process database and were used for gene ontology (GO) and pathway enrichment analysis using Cytoscape (v3.9.1). Based on GO analysis, DEGs annotated to mucosal immunity, recognizing and presenting antigens, chemotaxis of neutrophils, eosinophils, natural killer cells, B and T cells mediated by signaling pathways including toll like receptors, interleukins, tumor necrosis factor, T cell receptor, and NF-KB were upregulated, while markers of macrophages chemotaxis and cytosolic pattern recognition were downregulated. This study provides a holistic snapshot of immune-related pathways induced by C. parvum in calves, including novel and detailed feedback and feedforward regulatory mechanisms establishing the crosstalk between innate and adaptive immune response in neonate calves, which could be utilized further to develop new therapeutic strategies.
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Affiliation(s)
- Arash Veshkini
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
| | - Franziska Dengler
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Lisa Bachmann
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
- Faculty of Agriculture and Food Science, University of Applied Science Neubrandenburg, Neubrandenburg, Germany
| | - Wendy Liermann
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
| | - Christiane Helm
- Institutue for Veterinary Pathology, Leipzig University, Leipzig, Germany
| | - Reiner Ulrich
- Institutue for Veterinary Pathology, Leipzig University, Leipzig, Germany
| | - Cora Delling
- Institute of Veterinary Parasitology, Leipzig University, Leipzig, Germany
| | - Christa Kühn
- Research Institute for Farm Animal Biology, Institute of Genome Biology, Dummerstorf, Germany
- Agricultural and Environmental Faculty, University Rostock, Rostock, Germany
| | - Harald M. Hammon
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
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13
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Eglit Y, Shiratori T, Jerlström-Hultqvist J, Williamson K, Roger AJ, Ishida KI, Simpson AGB. Meteora sporadica, a protist with incredible cell architecture, is related to Hemimastigophora. Curr Biol 2024; 34:451-459.e6. [PMID: 38262350 DOI: 10.1016/j.cub.2023.12.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 12/03/2023] [Accepted: 12/08/2023] [Indexed: 01/25/2024]
Abstract
"Kingdom-level" branches are being added to the tree of eukaryotes at a rate approaching one per year, with no signs of slowing down.1,2,3,4 Some are completely new discoveries, whereas others are morphologically unusual protists that were previously described but lacked molecular data. For example, Hemimastigophora are predatory protists with two rows of flagella that were known since the 19th century but proved to represent a new deep-branching eukaryote lineage when phylogenomic analyses were conducted.2Meteora sporadica5 is a protist with a unique morphology; cells glide over substrates along a long axis of anterior and posterior projections while a pair of lateral "arms" swing back and forth, a motility system without any obvious parallels. Originally, Meteora was described by light microscopy only, from a short-term enrichment of deep-sea sediment. A small subunit ribosomal RNA (SSU rRNA) sequence was reported recently, but the phylogenetic placement of Meteora remained unresolved.6 Here, we investigated two cultivated Meteora sporadica isolates in detail. Transmission electron microscopy showed that both the anterior-posterior projections and the arms are supported by microtubules originating from a cluster of subnuclear microtubule organizing centers (MTOCs). Neither have a flagellar axoneme-like structure. Sequencing the mitochondrial genome showed this to be among the most gene-rich known, outside jakobids. Remarkably, phylogenomic analyses of 254 nuclear protein-coding genes robustly support a close relationship with Hemimastigophora. Our study suggests that Meteora and Hemimastigophora together represent a morphologically diverse "supergroup" and thus are important for resolving the tree of eukaryote life and early eukaryote evolution.
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Affiliation(s)
- Yana Eglit
- Institute for Comparative Genomics, Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Takashi Shiratori
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
| | - Jon Jerlström-Hultqvist
- Institute for Comparative Genomics, Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Kelsey Williamson
- Institute for Comparative Genomics, Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Andrew J Roger
- Institute for Comparative Genomics, Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Ken-Ichiro Ishida
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan.
| | - Alastair G B Simpson
- Institute for Comparative Genomics, Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada.
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Zheng Z, Lu X, Zhou D, Deng XF, Liu QX, Liu XB, Zhang J, Li YQ, Zheng H, Dai JG. A novel enemy of cancer: recent investigations into protozoan anti-tumor properties. Front Cell Infect Microbiol 2024; 13:1325144. [PMID: 38274735 PMCID: PMC10808745 DOI: 10.3389/fcimb.2023.1325144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/28/2023] [Indexed: 01/27/2024] Open
Abstract
Cancer remains a significant global health issue, despite advances in screening and treatment. While existing tumor treatment protocols such as surgery, chemotherapy, radiotherapy, targeted therapy, and immunotherapy have proven effective in enhancing the prognosis for some patients, these treatments do not benefit all patients. Consequently, certain types of cancer continue to exhibit a relatively low 5-year survival rate. Therefore, the pursuit of novel tumor intervention strategies may help improve the current effectiveness of tumor treatment. Over the past few decades, numerous species of protozoa and their components have exhibited anti-tumor potential via immune and non-immune mechanisms. This discovery introduces a new research direction for the development of new and effective cancer treatments. Through in vitro experiments and studies involving tumor-bearing mice, the anti-tumor ability of Toxoplasma gondii, Plasmodium, Trypanosoma cruzi, and other protozoa have unveiled diverse mechanisms by which protozoa combat cancer, demonstrating encouraging prospects for their application. In this review, we summarize the anti-tumor ability and anti-tumor mechanisms of various protozoa and explore the potential for their clinical development and application.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Hong Zheng
- Department of Thoracic Surgery, Xinqiao Hospital, Army (Third Military) Medical University, Chongqing, China
| | - Ji-gang Dai
- Department of Thoracic Surgery, Xinqiao Hospital, Army (Third Military) Medical University, Chongqing, China
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15
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Taghipour A, Javanmard E, Rahimi HM, Abdoli A, Matin S, Haghbin M, Olfatifar M, Mirjalali H, Zali MR. Prevalence of intestinal parasitic infections in patients with diabetes: a systematic review and meta-analysis. Int Health 2024; 16:23-34. [PMID: 37052134 PMCID: PMC10759288 DOI: 10.1093/inthealth/ihad027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/03/2023] [Accepted: 03/23/2023] [Indexed: 04/14/2023] Open
Abstract
Patients with diabetes are at an increased risk of intestinal parasitic infections (IPIs). We evaluated the pooled prevalence and OR of IPIs in patients with diabetes through a systematic review and meta-analysis. A systematic search was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol for studies reporting IPIs in patients with diabetes through 1 August 2022. The collected data were analyzed using comprehensive meta-analysis software version 2. Thirteen case-control studies and nine cross-sectional studies were included in this study. The overall prevalence of IPIs in patients with diabetes was calculated to be 24.4% (95% CI 18.8 to 31%). Considering the case-control design, the prevalence of IPIs in case (25.7%; 95% CI 18.4 to 34.5%) was higher than controls (15.5%; 95% CI 8.4 to 26.9%) and a significant correlation was observed (OR, 1.80; 95% CI 1.08 to 2.97%). Moreover, a significant correlation was seen in the prevalence of Cryptosporidium spp. (OR, 3.30%; 95% CI 1.86 to 5.86%), Blastocystis sp. (OR, 1.57%; 95% CI 1.11 to 2.22%) and hookworm (OR, 6.09%; 95% CI 1.11 to 33.41%) in the cases group. The present results revealed a higher prevalence of IPIs in patients with diabetes than in controls. Therefore, the results of this study suggest a proper health education program to preventing measures for the acquisition of IPIs in patients with diabetes.
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Affiliation(s)
- Ali Taghipour
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom 74148-46199, Iran
| | - Ehsan Javanmard
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran 1417613151, Iran
| | - Hanieh Mohammad Rahimi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran 4739-19395, Iran
| | - Amir Abdoli
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom 74148-46199, Iran
- Department of Medical Parasitology and Mycology, School of Medicine, Jahrom University of Medical Sciences, Jahrom 74148-46199, Iran
| | - Sara Matin
- Department of Pediatrics, Jahrom University of Medical Sciences, Jahrom 74148-46199, Iran
| | - Marzieh Haghbin
- Clinical Research Development Unit of Peymanieh Hospital, Faculty of Medicine, Jahrom University of Medical Sciences, Jahrom 3713649373, Iran
| | - Meysam Olfatifar
- Gastroenterology and Hepataology Diseases Research Center, Qom University of Medical Sciences, Qom 4739-19395, Iran
| | - Hamed Mirjalali
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran 4739-19395, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran 4739-19395, Iran
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16
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Girma A, Genet A. Magnitude and Determinants of Intestinal Parasites among Children under Five in Ethiopia During 2010-2023: A Systematic Review and Meta-Analysis. Fetal Pediatr Pathol 2024; 43:47-65. [PMID: 38006393 DOI: 10.1080/15513815.2023.2284920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/10/2023] [Indexed: 11/27/2023]
Abstract
Background: Intestinal parasitic infection (IPI) poses a serious public health threat across the globe, particularly in children in low- and middle-income countries like Ethiopia. This study was to provide pooled estimates for the individually available data on IPI and its predictors among children under five in Ethiopia. Methods: Cochrane's Q, I2, sensitivity analysis, funnel plot, Begg's, and Egger's regression tests were used to check heterogeneity and publication bias. A random-effects model was used to calculate the pooled burden of IPI among children under five. Results: The pooled prevalence of IPI among children under five was 28.27% (95% CI = 20.52-36.03%). Of these, single and mixed infections contribute to 28.02% and 0.25%. Intestinal parasites were significantly associated with eating raw fruits and vegetables [AO = 3.21, 95% CI = 1.11, 5.31]. Conclusion: Under the present scenario, the IPI ranges from 17.78 to 40.05%, and the IPI is higher in community-based studies of children under five.
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Affiliation(s)
- Abayeneh Girma
- Department of Biology, College of Natural and Computational Science, Mekdela Amba University, Tuluawlia, Ethiopia
| | - Amere Genet
- Department of Biology, College of Natural and Computational Science, Mekdela Amba University, Tuluawlia, Ethiopia
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17
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Belanche A, Palma-Hidalgo JM, Jiménez E, Yáñez-Ruiz DR. Enhancing rumen microbial diversity and its impact on energy and protein metabolism in forage-fed goats. Front Vet Sci 2023; 10:1272835. [PMID: 38179333 PMCID: PMC10764530 DOI: 10.3389/fvets.2023.1272835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/05/2023] [Indexed: 01/06/2024] Open
Abstract
Introduction This study explores if promoting a complex rumen microbiota represents an advantage or a handicap in the current dairy production systems in which ruminants are artificially reared in absence of contact with adult animals and fed preserved monophyte forage. Methods In order to promote a different rumen microbial diversity, a total of 36 newborn goat kids were artificially reared, divided in 4 groups and daily inoculated during 10 weeks with autoclaved rumen fluid (AUT), fresh rumen fluid from adult goats adapted to forage (RFF) or concentrate (RFC) diets, or absence of inoculation (CTL). At 6 months of age all animals were shifted to an oats hay diet to determine their ability to digest a low quality forage. Results and discussion Early life inoculation with fresh rumen fluid promoted an increase in the rumen overall microbial diversity which was detected later in life. As a result, at 6 months of age RFF and RFC animals had higher bacterial (+50 OTUs) and methanogens diversity (+4 OTUs) and the presence of a complex rumen protozoal community (+32 OTUs), whereas CTL animals remained protozoa-free. This superior rumen diversity and presence of rumen protozoa had beneficial effects on the energy metabolism allowing a faster adaptation to the forage diet, a higher forage digestion (+21% NDF digestibility) and an energetically favourable shift of the rumen fermentation pattern from acetate to butyrate (+92%) and propionate (+19%) production. These effects were associated with the presence of certain rumen bacterial taxa and a diverse protozoal community. On the contrary, the presence of rumen protozoa (mostly Entodinium) had a negative impact on the N metabolism leading to a higher bacterial protein breakdown in the rumen and lower microbial protein flow to the host based on purine derivatives urinary excretion (-17% to -54%). The inoculation with autoclaved rumen fluid, as source of fermentation products but not viable microbes, had smaller effects than using fresh inoculum. These findings suggest that enhancing rumen microbial diversity represents a desirable attribute when ruminants are fed forages in which the N supply does not represent a limiting factor for the rumen microbiota.
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Affiliation(s)
- Alejandro Belanche
- Estación Experimental del Zaidín (CSIC), Granada, Spain
- Department of Animal Production and Food Sciences, University of Zaragoza, Zaragoza, Spain
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18
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Vicente-Santos A, Lock LR, Allira M, Dyer KE, Dunsmore A, Tu W, Volokhov DV, Herrera C, Lei GS, Relich RF, Janech MG, Bland AM, Simmons NB, Becker DJ. Serum proteomics reveals a tolerant immune phenotype across multiple pathogen taxa in wild vampire bats. Front Immunol 2023; 14:1281732. [PMID: 38193073 PMCID: PMC10773587 DOI: 10.3389/fimmu.2023.1281732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/24/2023] [Indexed: 01/10/2024] Open
Abstract
Bats carry many zoonotic pathogens without showing pronounced pathology, with a few exceptions. The underlying immune tolerance mechanisms in bats remain poorly understood, although information-rich omics tools hold promise for identifying a wide range of immune markers and their relationship with infection. To evaluate the generality of immune responses to infection, we assessed the differences and similarities in serum proteomes of wild vampire bats (Desmodus rotundus) across infection status with five taxonomically distinct pathogens: bacteria (Bartonella spp., hemoplasmas), protozoa (Trypanosoma cruzi), and DNA (herpesviruses) and RNA (alphacoronaviruses) viruses. From 19 bats sampled in 2019 in Belize, we evaluated the up- and downregulated immune responses of infected versus uninfected individuals for each pathogen. Using a high-quality genome annotation for vampire bats, we identified 586 serum proteins but found no evidence for differential abundance nor differences in composition between infected and uninfected bats. However, using receiver operating characteristic curves, we identified four to 48 candidate biomarkers of infection depending on the pathogen, including seven overlapping biomarkers (DSG2, PCBP1, MGAM, APOA4, DPEP1, GOT1, and IGFALS). Enrichment analysis of these proteins revealed that our viral pathogens, but not the bacteria or protozoa studied, were associated with upregulation of extracellular and cytoplasmatic secretory vesicles (indicative of viral replication) and downregulation of complement activation and coagulation cascades. Additionally, herpesvirus infection elicited a downregulation of leukocyte-mediated immunity and defense response but an upregulation of an inflammatory and humoral immune response. In contrast to our two viral infections, we found downregulation of lipid and cholesterol homeostasis and metabolism with Bartonella spp. infection, of platelet-dense and secretory granules with hemoplasma infection, and of blood coagulation pathways with T. cruzi infection. Despite the small sample size, our results suggest that vampire bats have a similar suite of immune mechanisms for viruses distinct from responses to the other pathogen taxa, and we identify potential biomarkers that can expand our understanding of pathogenesis of these infections in bats. By applying a proteomic approach to a multi-pathogen system in wild animals, our study provides a distinct framework that could be expanded across bat species to increase our understanding of how bats tolerate pathogens.
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Affiliation(s)
| | - Lauren R. Lock
- School of Biological Sciences, University of Oklahoma, Norman, OK, United States
| | - Meagan Allira
- School of Biological Sciences, University of Oklahoma, Norman, OK, United States
| | - Kristin E. Dyer
- School of Biological Sciences, University of Oklahoma, Norman, OK, United States
| | - Annalise Dunsmore
- Department of Tropical Medicine, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, United States
- Vector-Borne and Infectious Disease Research Center, Tulane University, New Orleans, LA, United States
| | - Weihong Tu
- Department of Tropical Medicine, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, United States
- Vector-Borne and Infectious Disease Research Center, Tulane University, New Orleans, LA, United States
| | - Dmitriy V. Volokhov
- Center for Biologics Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, United States
| | - Claudia Herrera
- Department of Tropical Medicine, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, United States
- Vector-Borne and Infectious Disease Research Center, Tulane University, New Orleans, LA, United States
| | - Guang-Sheng Lei
- Department of Pathology and Laboratory Medicine, School of Medicine, Indiana University, Indianapolis, IN, United States
| | - Ryan F. Relich
- Department of Pathology and Laboratory Medicine, School of Medicine, Indiana University, Indianapolis, IN, United States
| | - Michael G. Janech
- Hollings Marine Laboratory, Charleston, SC, United States
- Department of Biology, College of Charleston, Charleston, SC, United States
| | - Alison M. Bland
- Hollings Marine Laboratory, Charleston, SC, United States
- Department of Biology, College of Charleston, Charleston, SC, United States
| | - Nancy B. Simmons
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York, NY, United States
| | - Daniel J. Becker
- School of Biological Sciences, University of Oklahoma, Norman, OK, United States
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Robi DT, Mossie T, Temteme S. Eukaryotic Infections in Dairy Calves: Impacts, Diagnosis, and Strategies for Prevention and Control. Vet Med (Auckl) 2023; 14:195-208. [PMID: 38058381 PMCID: PMC10697087 DOI: 10.2147/vmrr.s442374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
Eukaryotic infections are common among dairy calves and can have significant impacts on their health and growth rates. Fungal infections caused by Aspergillus fumigatus, Trichophyton verrucosum, and Candida albicans can cause respiratory diseases, dermatophytosis, and diarrhea, respectively. Protozoan parasites, including Cryptosporidium parvum, Giardia duodenalis, and Eimeria spp., are also common in dairy calves. C. parvum is highly contagious and can cause severe diarrhea and dehydration, while Giardia duodenalis can lead to poor growth and is transmissible to humans through contaminated food or water. Eimeria spp. can cause coccidiosis and lead to reduced growth rates, poor feed conversion, and death. The common helminthic infections in dairy calves include Ostertagia ostertagi, Cooperia spp., Fasciola hepatica, and Strongyloides papillosus. These parasitic infections significantly impact calf health, growth, and dairy industry productivity. Diagnosis of these infections can be made through fecal samples using microscopy or molecular methods. However, diagnosis of the infections can be challenging and requires a combination of clinical signs and laboratory tests such as culture and PCR. Preventing and controlling eukaryotic infections in dairy calves requires several measures. Good hygiene and sanitation practices, proper management strategies, and timely treatment of affected animals are important. It is also necessary to avoid overcrowding and consider vaccination against ringworm. Further research is needed to better understand the epidemiology and characterization of eukaryotic infections in dairy calves, which will help in the development of more effective prevention and control strategies. In general, good hygiene practices, appropriate management strategies, and timely treatment of affected animals are crucial in preventing and controlling the infections, ensuring the health and well-being of dairy calves.
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Affiliation(s)
- Dereje Tulu Robi
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, Tepi, Ethiopia
| | - Tesfa Mossie
- Ethiopian Institute of Agriculture Research, Jimma Agriculture Research Center, Jimma, Ethiopia
| | - Shiferaw Temteme
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, Tepi, Ethiopia
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Dib LV, Barbosa A, da Silva B, Pissinatti A, Moreira S, Tavares MC, Teixeira R, da Costa AL, Muniz JA, Junglos A, Hirano ZM, Amendoeira MR. Gastrointestinal Parasites Affecting Non-Human Primates That Are Kept Ex Situ and Their Handlers in Different Brazilian Institutions: Diagnosis and Analysis of Risk Factors. Pathogens 2023; 12:1410. [PMID: 38133294 PMCID: PMC10745941 DOI: 10.3390/pathogens12121410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 12/23/2023] Open
Abstract
AIM Determining gastrointestinal parasites' frequency in non-human primates (NHPs) and handlers in different Brazilian institutions, and associate it with management information. METHODS Different institutions in São Paulo (A), Brasília (B), Rio de Janeiro (C), Pará (D) and Santa Catarina (E) were included in the study. Fecal samples were processed by using coproparasitological techniques; information about NHP handling and professionals' routine were collected through the use of questionnaires. RESULTS In total, 33.1% of 511 NHP samples were positive for parasites; the Entamoebidae Group and Strongyloides sp.-compatible eggs were the most detected protozoa and helminths, respectively. The Entamoebidae Group was mainly diagnosed in Alouatta from Institutions E and D, and was also the only parasite detected in handlers. Strongyloides-compatible eggs were mostly evident in fecal samples collected from Cebidae from Institutions B and D. Some risk factors associated with parasite infection were a high number of animals in the same enclosure and their use for research protocol purposes, whereas quarantine, a post-infection vacant period in enclosures and antiparasitic supply were categorized as protective factors against these agents' infection. CONCLUSIONS Parasites showing different transmission routes but concomitantly circulating in NHP institutions located in different Brazilian regions were identified in the current study, with an emphasis on those presenting zoonotic potential.
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Affiliation(s)
- Laís Verdan Dib
- Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-360, Brazil; (A.B.); (M.R.A.)
- Medicine Faculty of Campos (FMC), Campos dos Goytacazes 28035-581, Brazil
| | - Alynne Barbosa
- Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-360, Brazil; (A.B.); (M.R.A.)
- Department of Parasitology and Microbiology, Fluminense Federal University, Niterói 24020-140, Brazil;
| | - Breno da Silva
- Department of Parasitology and Microbiology, Fluminense Federal University, Niterói 24020-140, Brazil;
| | - Alcides Pissinatti
- Primatology Center of Rio de Janeiro (CPRJ), Instituto Estadual do Ambiente (INEA), Guapimirim 25940-000, Brazil; (A.P.); (S.M.)
| | - Silvia Moreira
- Primatology Center of Rio de Janeiro (CPRJ), Instituto Estadual do Ambiente (INEA), Guapimirim 25940-000, Brazil; (A.P.); (S.M.)
| | | | - Rodrigo Teixeira
- Quinzinho de Barros Municipal Zoological Park (Zoo Sorocaba), Sorocaba 18020-268, Brazil; (R.T.); (A.L.d.C.)
- Wild Animals Graduate Program, Faculty of Veterinary Medicine and Zootechnics, Paulista University “Julio de Mesquita Filho” (UNESP-Botucatu), Botucatu 18618-970, Brazil
- Faculty of Veterinary Medicine, University of Sorocaba (UNISO), Sorocaba 18023-000, Brazil
| | - André Luíz da Costa
- Quinzinho de Barros Municipal Zoological Park (Zoo Sorocaba), Sorocaba 18020-268, Brazil; (R.T.); (A.L.d.C.)
| | - José Augusto Muniz
- National Primate Center (CENP), Ananindeua 67033-009, Brazil; (J.A.M.); (A.J.)
| | - Amauri Junglos
- National Primate Center (CENP), Ananindeua 67033-009, Brazil; (J.A.M.); (A.J.)
| | | | - Maria Regina Amendoeira
- Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-360, Brazil; (A.B.); (M.R.A.)
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Martin KA, Kovach K, Moscoso E, Carreiro E, Jesudoss Chelladurai JRJ, Brewer MT. Assessment of in vitro efficacy for common surface disinfectants and antiseptics against Tritrichomonas foetus trophozoites. Front Vet Sci 2023; 10:1282274. [PMID: 38026616 PMCID: PMC10668592 DOI: 10.3389/fvets.2023.1282274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
The protozoan Tritrichomonas foetus causes early embryonic death in cattle, there are no legal options for treating this parasite in the United States, and there are few developed protocols for cleaning veterinary and obstetrical equipment that may have been contaminated with trophozoites. In this study, we evaluated bleach, ethanol, acetic acid, chlorhexidine gluconate, and hydrogen peroxide solutions for the ability to kill trophozoites in vitro. Our findings suggested that ethanol and bleach could adequately disinfect tools and equipment. Acetic acid, chlorhexidine, and hydrogen peroxide had applications as surface disinfectants in addition to potential as local topical treatments due to their past uses in veterinary theriogenology. Chlorhexidine gluconate demonstrated trophocidal effects by damaging parasite cell membranes and had the lowest effective concentration 50 (EC50) of any compound tested and was in the micromolar range. These findings, in conjunction with accepted clinical uses of chlorhexidine gluconate suggest that this is a convenient agent for disinfecting equipment. In addition, topical use of chlorhexidine is relatively common, setting the stage for further investigation of this compound as a topical therapeutic option for bovine trichomonosis.
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Affiliation(s)
- Katy A. Martin
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Kristofer Kovach
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Erica Moscoso
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Elizabeth Carreiro
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Jeba R. J. Jesudoss Chelladurai
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, United States
| | - Matthew T. Brewer
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
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22
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Jaberi Darmiyan S, Montazer Torbati MB, Ramin M, Ghiasi SE. Effects of wheat bran replacement with pomegranate seed pulp on rumen fermentation, gas production, methanogen and protozoa populations of camel and goat rumen using competitive PCR technique: An in vitro study. Vet Med Sci 2023; 9:2901-2911. [PMID: 37864580 PMCID: PMC10650269 DOI: 10.1002/vms3.1297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/25/2023] [Accepted: 10/05/2023] [Indexed: 10/23/2023] Open
Abstract
BACKGROUND Microbial populations in the rumen play an essential role in the degradation of Cellulosic dietary components and in providing nutrients to the host animal. OBJECTIVE This study aims to detect the effect of pomegranate seed pulp (PSP) on rumen fermentation, digestibility and methanogens and the protozoa population (by competitive polymerase chain reaction [PCR]) of the camel and goat rumen fluid. MATERIALS AND METHODS PSP was added to the experimental treatments and replaced by wheat bran (0%, 5% and 10%). Rumen fluid was collected from three goats and two camels according to the similarity of sex, breed, origin and time and used for three gas production studies. DNA extraction was performed by the RBB + c method, the ImageJ programme calculated band intensities (target and competing DNA), and line gradients were plotted based on the number of copies and intensity. RESULTS Our result showed that diets did not significantly affect the methanogen and protozoa population. Animal species affected microbial populations so that both populations in camels were less than goats. The production of gas and volatile fatty acids was not affected by diets. These two parameters and NH3 concentration and methane production in goats were higher than in camel. The pH of digested dry matter and microbial protein in camels was higher than in goats. CONCLUSIONS Therefore, the competitive PCR technique is an effective method for enumerating rumen microbiota. This supplementation can be considered a strategy to achieve performance and environmental benefits.
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Affiliation(s)
- Sanaz Jaberi Darmiyan
- Department of Animal Science, Faculty of AgricultureUniversity of BirjandBirjandIran
| | - Mohammad Bagher Montazer Torbati
- Department of Animal Science, Faculty of AgricultureUniversity of BirjandBirjandIran
- Research Group of Environmental Stress in Animal Science, Faculty of AgricultureUniversity of BirjandBirjandIran
| | - Mohammad Ramin
- Department of Animal Nutrition and ManagementSwedish University of Agricultural SciencesUmeåSweden
| | - Seyed Ehsan Ghiasi
- Department of Animal Science, Faculty of AgricultureUniversity of BirjandBirjandIran
- Research Group of Environmental Stress in Animal Science, Faculty of AgricultureUniversity of BirjandBirjandIran
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Das A, Liu T, Li H, Husain S. The RNA-binding protein RBP42 regulates cellular energy metabolism in mammalian-infective Trypanosoma brucei. mSphere 2023; 8:e0027323. [PMID: 37581443 PMCID: PMC10654194 DOI: 10.1128/msphere.00273-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/05/2023] [Indexed: 08/16/2023] Open
Abstract
RNA-binding proteins (RBPs) are key players in coordinated post-transcriptional regulation of functionally related genes, defined as RNA regulons. RNA regulons play particularly critical roles in parasitic trypanosomes, which exhibit unregulated co-transcription of long unrelated gene arrays. In this report, we present a systematic analysis of an essential RBP, RBP42, in the mammalian-infective bloodstream form of African trypanosome and show that RBP42 is a key regulator of parasite's central carbon and energy metabolism. Using individual-nucleotide resolution UV cross-linking and immunoprecipitation to identify genome-wide RBP42-RNA interactions, we show that RBP42 preferentially binds within the coding region of mRNAs encoding core metabolic enzymes. Global quantitative transcriptomic and proteomic analyses reveal that loss of RBP42 reduces the abundance of target mRNA-encoded proteins, but not target mRNA, suggesting a positive translational regulatory role of RBP42. Significant changes in central carbon metabolic intermediates, following loss of RBP42, further support its critical role in cellular energy metabolism. Trypanosoma brucei infection, transmitted through the bite of blood-feeding tsetse flies, causes deadly diseases in humans and livestock. This disease, if left untreated, is almost always fatal. Existing therapies are toxic and difficult to administer. During T. brucei's lifecycle in two different host environments, the parasite progresses through distinctive life stages with major morphological and metabolic changes, requiring precise alteration of parasite gene expression program. In the absence of regulated transcription, post-transcriptional processes mediated by RNA-binding proteins play critical roles in T. brucei gene regulation. In this study, we show that the RNA-binding protein RBP42 plays crucial roles in cellular energy metabolic regulation of this important human pathogen. Metabolic dysregulation observed in RBP42 knockdown cells offers a breadth of potential interest to researchers studying parasite biology and can also impact research in general eukaryotic biology.
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Affiliation(s)
- Anish Das
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers-New Jersey Medical School, Newark, New Jersey, USA
| | - Tong Liu
- Center for Advanced Proteomics Research, Rutgers-New Jersey Medical School, Newark, New Jersey, USA
| | - Hong Li
- Center for Advanced Proteomics Research, Rutgers-New Jersey Medical School, Newark, New Jersey, USA
| | - Seema Husain
- Genomics Center, Rutgers-New Jersey Medical School, Newark, New Jersey, USA
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Jajosky RP, Wu SC, Jajosky PG, Stowell SR. Plasmodium knowlesi ( Pk) Malaria: A Review & Proposal of Therapeutically Rational Exchange (T-REX) of Pk-Resistant Red Blood Cells. Trop Med Infect Dis 2023; 8:478. [PMID: 37888606 PMCID: PMC10610852 DOI: 10.3390/tropicalmed8100478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/09/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023] Open
Abstract
Plasmodium knowlesi (Pk) causes zoonotic malaria and is known as the "fifth human malaria parasite". Pk malaria is an emerging threat because infections are increasing and can be fatal. While most infections are in Southeast Asia (SEA), especially Malaysia, travelers frequently visit this region and can present with Pk malaria around the world. So, clinicians need to know (1) patients who present with fever after recent travel to SEA might be infected with Pk and (2) Pk is often misdiagnosed as P. malariae (which typically causes less severe malaria). Here we review the history, pathophysiology, clinical features, diagnosis, and treatment of Pk malaria. Severe disease is most common in adults. Signs and symptoms can include fever, abdominal pain, jaundice, acute kidney injury, acute respiratory distress syndrome, hyponatremia, hyperparasitemia, and thrombocytopenia. Dengue is one of the diseases to be considered in the differential. Regarding pathophysiologic mechanisms, when Pk parasites invade mature red blood cells (RBCs, i.e., normocytes) and reticulocytes, changes in the red blood cell (RBC) surface can result in life-threatening cytoadherence, sequestration, and reduced RBC deformability. Since molecular mechanisms involving the erythrocytic stage are responsible for onset of severe disease and lethal outcomes, it is biologically plausible that manual exchange transfusion (ET) or automated RBC exchange (RBCX) could be highly beneficial by replacing "sticky" parasitized RBCs with uninfected, deformable, healthy donor RBCs. Here we suggest use of special Pk-resistant donor RBCs to optimize adjunctive manual ET/RBCX for malaria. "Therapeutically-rational exchange transfusion" (T-REX) is proposed in which Pk-resistant RBCs are transfused (instead of disease-promoting RBCs). Because expression of the Duffy antigen on the surface of human RBCs is essential for parasite invasion, T-REX of Duffy-negative RBCs-also known as Fy(a-b-) RBCs-could replace the majority of the patient's circulating normocytes with Pk invasion-resistant RBCs (in a single procedure lasting about 2 h). When sequestered or non-sequestered iRBCs rupture-in a 24 h Pk asexual life cycle-the released merozoites cannot invade Fy(a-b-) RBCs. When Fy(a-b-) RBC units are scarce (e.g., in Malaysia), clinicians can consider the risks and benefits of transfusing plausibly Pk-resistant RBCs, such as glucose-6-phosphate dehydrogenase deficient (G6PDd) RBCs and Southeast Asian ovalocytes (SAO). Patients typically require a very short recovery time (<1 h) after the procedure. Fy(a-b-) RBCs should have a normal lifespan, while SAO and G6PDd RBCs may have mildly reduced half-lives. Because SAO and G6PDd RBCs come from screened blood donors who are healthy and not anemic, these RBCs have a low-risk for hemolysis and do not need to be removed after the patient recovers from malaria. T-REX could be especially useful if (1) antimalarial medications are not readily available, (2) patients are likely to progress to severe disease, or (3) drug-resistant strains emerge. In conclusion, T-REX is a proposed optimization of manual ET/RBCX that has not yet been utilized but can be considered by physicians to treat Pk malaria patients.
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Affiliation(s)
- Ryan Philip Jajosky
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA; (S.-C.W.)
- Biconcavity Inc., Lilburn, GA 30047, USA
| | - Shang-Chuen Wu
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA; (S.-C.W.)
| | | | - Sean R. Stowell
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA; (S.-C.W.)
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25
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Scheel M, Zervas A, Rijkers R, Tveit AT, Ekelund F, Campuzano Jiménez F, Christensen TR, Jacobsen CS. Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators. FEMS Microbiol Ecol 2023; 99:fiad123. [PMID: 37796894 PMCID: PMC10599396 DOI: 10.1093/femsec/fiad123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/31/2023] [Accepted: 10/04/2023] [Indexed: 10/07/2023] Open
Abstract
Permafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permafrost thaw. We sequenced the total RNA of a 1 m deep soil core consisting of up to 26 500-year-old permafrost material from an active abrupt erosion site. We analysed the microbial community in the active layer soil, the recently thawed, and the intact permafrost, and found maximum RNA:DNA ratios in recently thawed permafrost indicating a high microbial activity. In thawed permafrost, potentially copiotrophic Burkholderiales and Sphingobacteriales, but also microbiome predators dominated the community. Overall, both thaw-dependent and long-term soil properties significantly correlated with changes in community composition, as did microbiome predator abundance. Bacterial predators were dominated in shallower depths by Myxococcota, while protozoa, especially Cercozoa and Ciliophora, almost tripled in relative abundance in thawed layers. Our findings highlight the ecological importance of a diverse interkingdom and active microbial community highly abundant in abruptly thawing permafrost, as well as predation as potential biological control mechanism.
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Affiliation(s)
- Maria Scheel
- Department of Environmental Science, Aarhus University, Roskilde 4000, Denmark
- Department of Ecoscience, Aarhus University, Roskilde 4000, Denmark
| | - Athanasios Zervas
- Department of Environmental Science, Aarhus University, Roskilde 4000, Denmark
| | - Ruud Rijkers
- Department of Ecological Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
- Department of Environmental Science, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Alexander T Tveit
- Department of Arctic and Marine Biology, University of Tromsø, Tromsø 9019, Norway
| | - Flemming Ekelund
- Department of Environmental Science, Aarhus University, Roskilde 4000, Denmark
- Department of Biology, Copenhagen University, DK-2200 Copenhagen, Denmark
| | | | - Torben R Christensen
- Department of Ecoscience, Aarhus University, Roskilde 4000, Denmark
- Water, Energy and Environmental Engineering Research Unit, University of Oulu, FI-90014 Oulu, Finland
| | - Carsten S Jacobsen
- Department of Environmental Science, Aarhus University, Roskilde 4000, Denmark
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Juarez-Estrada MA, Graham D, Hernandez-Velasco X, Tellez-Isaias G. Editorial: Parasitism: the good, the bad and the ugly. Front Vet Sci 2023; 10:1304206. [PMID: 37915945 PMCID: PMC10616899 DOI: 10.3389/fvets.2023.1304206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 10/06/2023] [Indexed: 11/03/2023] Open
Affiliation(s)
- Marco A. Juarez-Estrada
- Department of Medicine and Zootechnics of Birds, College of Veterinary Medicine and Zootechnics, National Autonomous University of Mexico, Mexico City, Mexico
| | - Danielle Graham
- Division of Agriculture, Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Xochitl Hernandez-Velasco
- Department of Medicine and Zootechnics of Birds, College of Veterinary Medicine and Zootechnics, National Autonomous University of Mexico, Mexico City, Mexico
| | - Guillermo Tellez-Isaias
- Division of Agriculture, Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
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Kalmár Z, Sándor AD, Balea A, Borşan SD, Matei IA, Ionică AM, Gherman CM, Mihalca AD, Cozma-Petruț A, Mircean V, Györke A. Toxoplasma gondii in small mammals in Romania: the influence of host, season and sampling location. BMC Vet Res 2023; 19:177. [PMID: 37773155 PMCID: PMC10540334 DOI: 10.1186/s12917-023-03729-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 09/13/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND Toxoplasma gondii is a protozoan parasite that infects a large spectrum of warm-blooded animals, including humans. Small rodents and insectivores play an important role in the epidemiology of T. gondii and may serve as a source of infection for both, domestic and wild definitive felid hosts. Factors influencing the occurrence of T. gondii in wild small mammals are unknown, despite the fact that many intermediate host species are identified. We have used small mammals (Rodentia and Lipotyphla) captured over two years in various habitats, both in urbanised and in natural landscapes. We assessed the importance of land-use, season and host ecology on T. gondii infection. RESULTS We examined 471 individuals belonging to 20 small mammal species, collected at 63 locations spread over wide altitude, habitat and land-use ranges from Romania. Heart tissue samples were individually analysed by PCR targeting the 529 bp repetitive DNA fragment of T. gondii. The overall prevalence of infection was 7.3%, with nine species of rodents and two species of shrews being found to carry T. gondii DNA. Five species showed high frequency of infection, with the highest prevalence found in Myodes glareolus (35.5%), followed by Spermophilus citellus (33.3%), Sorex minutus (23.1%), S. araneus (21.7%) and Micromys minutus (11.1%). Adults seemed more often infected than young, however when controlling for season, the difference was not significant, as in spring both adults and young showed higher infection rates, but more adults were sampled. Contrary to our expectations, urban/rural areas (with their implicit high density of domestic feline presence) had no effect on infection prevalence. In addition, neither habitat, nor land-use at sampling sites was important as only geographical location and host species were contributing factors to the infection risk. CONCLUSIONS High prevalence of T. gondii infection showed a highly localised, patchy occurrence, with long living and higher mobility host species being the most common carriers, especially during autumn.
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Affiliation(s)
- Zsuzsa Kalmár
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
- “Iuliu Hațieganu“ University of Medicine and Pharmacy, Cluj-Napoca, Romania
- HUN-REN-UVMB Climate Change: New Blood-sucking Parasites and Vector-borne Pathogens Research Group, Budapest, Hungary
| | - Attila D. Sándor
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
- HUN-REN-UVMB Climate Change: New Blood-sucking Parasites and Vector-borne Pathogens Research Group, Budapest, Hungary
- Department of Parasitology and Zoology, University of Veterinary Medicine, Budapest, Hungary
| | - Anamaria Balea
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
- Sanitary Veterinary and Food Safety Directorate Cluj, Cluj-Napoca, Romania
| | - Silvia-Diana Borşan
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
| | - Ioana Adriana Matei
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
| | - Angela Monica Ionică
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
- Clinical Hospital of Infectious Diseases of Cluj-Napoca, Cluj-Napoca, Romania
| | - Călin Mircea Gherman
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
| | - Andrei Daniel Mihalca
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
| | | | - Viorica Mircean
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
| | - Adriana Györke
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj- Napoca, RO-400372 Romania
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28
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Midlej V, Pereira-Neves A. Editorial: Perspectives on the ultrastructure and cell biology of parasitic protists. Front Cell Infect Microbiol 2023; 13:1293959. [PMID: 37808909 PMCID: PMC10556728 DOI: 10.3389/fcimb.2023.1293959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 10/10/2023] Open
Affiliation(s)
- Victor Midlej
- Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
| | - Antonio Pereira-Neves
- Departamento de Microbiologia, Instituto Aggeu Magalhães, Fiocruz, Recife, Pernambuco, Brazil
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Fereig RM, Jirapattharasate C, Frey CF. Editorial: Recent trends in infection biology and control of protozoan parasites. Front Cell Infect Microbiol 2023; 13:1292591. [PMID: 37799333 PMCID: PMC10548367 DOI: 10.3389/fcimb.2023.1292591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 10/07/2023] Open
Affiliation(s)
- Ragab M. Fereig
- Division of Internal Medicine, Department of Animal Medicine, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Charoonluk Jirapattharasate
- Department of Pre-Clinic and Animal Science, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom, Thailand
| | - Caroline F. Frey
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse-Faculty, University of Bern, Bern, Switzerland
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Gökpınar S, Akkuş GN, Akdeniz S. A Parasitological Examination on Aquarium Fish Sold in Petshops in Kırıkkale. Turkiye Parazitol Derg 2023; 47:160-165. [PMID: 37724365 DOI: 10.4274/tpd.galenos.2023.94840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
OBJECTIVE The aim of the present study was to determine the prevalence of parasitic infections in aquarium fish sold in local pet shops. METHODS Totally 502 fish samples from 8 species were obtained from 7 pet shops. Native preparations were prepared from the gills, fins, skin, intestines, and internal organs of fish and examined under a light microscope. RESULTS It was detected at the end of the study that 62.7% of the fishes examined were infected with one or more parasite species. Among the fish examined, 28.9% were infected with a single parasite, whereas 33.9% were infected with mixed parasites. Chilodonella sp. identified as the most common species. Other species detected included Trichodina sp., Piscinoodinium sp., Ichthyobodo sp., Ichthyophthirius multifiliis, Apiosoma sp., Epistylis sp., Vorticella sp., Gyrodactylus sp., Dactylogyrus sp., Capillaria sp., Camallanus sp., metacercariae, and nematode larvae, Argulus sp., Philodina sp., Euchlanis sp., Aelosoma sp., and Tetrahymena. CONCLUSION The importance of the present study is that highest number of parasite species were detected in aquarium fish sold in pet shops in Türkiye. The aquarium owners should pay attention to the cleanliness of the aquarium water in order to reduce the rate of parasitic infection in fish; when new fish are purchased, they should be taken from reliable sources, and the quarantine process should be observed.
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Affiliation(s)
- Sami Gökpınar
- Kırıkkale University Faculty of Veterinary Medicine, Department of Parasitology, Kırıkkale, Türkiye
| | - Gözde Nur Akkuş
- Kırıkkale University Health Sciences Institute, Department of Veterinary Parasitology, Kırıkkale, Türkiye
| | - Sinem Akdeniz
- Kırıkkale University Health Sciences Institute, Department of Veterinary Parasitology, Kırıkkale, Türkiye
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Sharma M, Lozano-Amado D, Chowdhury D, Singh U. Extracellular Vesicles and Their Impact on the Biology of Protozoan Parasites. Trop Med Infect Dis 2023; 8:448. [PMID: 37755909 PMCID: PMC10537256 DOI: 10.3390/tropicalmed8090448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
Extracellular vesicles (EVs) are lipid-membrane-bound structures produced naturally by all cells and have a variety of functions. EVs act as vehicles for transporting important molecular signals from one cell to another. Several parasites have been shown to secrete EVs, and their biological functions have been extensively studied. EVs have been shown to facilitate communication with the host cells (such as modulation of the host's immune system or promoting attachment and invasion into the host cells) or for communication between parasitic cells (e.g., transferring drug-resistance genes or factors modulating stage conversion). It is clear that EVs play an important role in host-parasite interactions. In this review, we summarized the latest research on the EVs secreted by protozoan parasites and their role in host-parasite and parasite-parasite communications.
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Affiliation(s)
- Manu Sharma
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
| | - Daniela Lozano-Amado
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
| | - Debabrata Chowdhury
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
| | - Upinder Singh
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
- Department of Microbiology and Immunology, School of Medicine, Stanford University, Stanford, CA 94305, USA
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Mathison BA, Pritt BS. The Landscape of Parasitic Infections in the United States. Mod Pathol 2023; 36:100217. [PMID: 37182583 DOI: 10.1016/j.modpat.2023.100217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/30/2023] [Accepted: 05/03/2023] [Indexed: 05/16/2023]
Abstract
The landscape of parasitic infections in the United States has shifted dramatically over the past century. Although infections such as malaria have been successfully eliminated, others remain endemic and pose a significant public health risk. Numerous parasitic infections are also imported each year. This article focuses on endemic parasitic infections that may be commonly seen in anatomical pathology preparations and discusses their biology, diagnostic histopathological features, and epidemiology.
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Affiliation(s)
- Blaine A Mathison
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah
| | - Bobbi S Pritt
- Department of Laboratory Medicine and Pathology, Divisions of Clinical Microbiology and Anatomic Pathology, Mayo Clinic, Rochester, Minnesota.
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Souza JBB, Silva ZMDA, Alves-Ribeiro BS, Moraes IDS, Alves-Sobrinho AV, Saturnino KC, Ferraz HT, Machado MRF, Braga ÍA, Ramos DGDS. Prevalence of Intestinal Parasites, Risk Factors and Zoonotic Aspects in Dog and Cat Populations from Goiás, Brazil. Vet Sci 2023; 10:492. [PMID: 37624279 PMCID: PMC10459326 DOI: 10.3390/vetsci10080492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/26/2023] Open
Abstract
Gastrointestinal diseases caused by parasites are frequently diagnosed in the clinical routine of domestic animals, especially dogs and cats. In general, they trigger factors that can affect human health due to zoonoses. Therefore, this study aims to identify the main intestinal parasites obtained from the fecal samples of dogs and cats in the municipality of Jata, Brazil, and their associated risk factors. Between October 2020 and March 2022, fecal samples were collected from 359 dogs and 55 cats through spontaneous defecation and subsequently subjected to coproparasitological analyses using the Willis fluctuation and Hoffman spontaneous sedimentation techniques. The following parasitic species were identified: Ancylostoma spp., Toxocara spp., Trichuris vulpis, Dipylidium caninum; Giardia spp., Entamoeba spp., Cystoisospora spp., and Platynosomum fastosum. The risk factors associated with parasitism include age, average income of owners, access to garbage, sewage, waste, outdated deworming, and contact with animals. The results demonstrate the need to establish public policies and implement preventive and control measures to reduce the occurrence of parasites in animals and the exposure of humans to pathogenic agents.
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Affiliation(s)
- Juliana Bruno Borges Souza
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
| | - Zara Mariana de Assis Silva
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
| | - Bruna Samara Alves-Ribeiro
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
| | - Iago de Sá Moraes
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
| | - Ana Vitória Alves-Sobrinho
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
| | - Klaus Casaro Saturnino
- Laboratory of Veterinary Pathological Anatomy, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil;
| | - Henrique Trevizoli Ferraz
- Laboratory of Veterinary Anatomy, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil;
| | - Mônica Rodrigues Ferreira Machado
- Laboratory of Biotechnology and Physiology in Fish, Institute of Biological Sciences, Federal University of Jataí, Jataí 75801-615, Brazil;
| | - Ísis Assis Braga
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
| | - Dirceu Guilherme de Souza Ramos
- Laboratory of Parasitology and Veterinary Clinical Analysis, Institute of Agricultural Sciences, Federal University of Jataí, Jataí 75801-615, Brazil; (J.B.B.S.); (Z.M.d.A.S.); (B.S.A.-R.); (I.d.S.M.); (A.V.A.-S.); (Í.A.B.)
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Shafiq A, Abbas F, Hafeez-ur-Rehman M, Khan BN, Aihetasham A, Amin I, Hmidullah, Mothana RA, Alharbi MS, Khan I, Khalil AAK, Ahmad B, Mubeen N, Akram M. Parasite Diversity in a Freshwater Ecosystem. Microorganisms 2023; 11:1940. [PMID: 37630500 PMCID: PMC10458229 DOI: 10.3390/microorganisms11081940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/11/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023] Open
Abstract
Parasites are a significant component of biodiversity. They negatively affect fish appearance, growth, and reproduction. In this study, the prevalence of infection, diversity, and mean intensity of parasites were examined in 9 freshwater fish species (45 samples per fish species). Ecto-parasites were examined on the skin, gills, and fins with a hand lens. Wet mounts were prepared using mucosal scrapings from all the external and internal organs of the sampled fish. Microscopy, muscle compression, and the pepsin-HCL artificial digestion technique were also performed. In this study, 26 species of parasites were identified including three taxa belonging to 9 species of protozoan parasites, 11 treamtodes, and 6 monogenean parasites. The identified protozoan parasites were Entamoeba histolitica, Chilodonella sp., Coccidia sp., Costia sp., Cryptobia sp., Ichthyopthiris-multifilis, Microsporidia, Piscinoodinium sp., and Ichthyobodo necator. The identified trematode parasites were Fasciola gigantica, Echinostoma revolutum, Fasciola hepatica, Haplorchis pumilio, Brachylaima cribbi, Echinostoma cinetorchis, Neascus sp., Deropegus sp., Trematode Soldier, Centrocestus formosanus, and Clinostomum marginatum. The identified monogenean parasites were Dactylogyrus limipopoensis, Dactylogyrus anchoratus, Dactylogyrus myersi, Dactylogyrus vastator, Gyrodactylus salaris, and Ancyrocephalus. The diversity of parasites was maximum at the Okara site. The host's organs that were targeted for parasitic infection included the intestine, liver, gills, fins, skin, and kidneys. The majority of the parasites were identified in Labeo rohita followed by Hypophthalmichthys molitrix, Ctenopharyngodon idella, Oreochromis niloticus, Cyprinus carpio, and Wallagu attu. Two species appeared to be resistant species because none of the parasites were observed in Notopterus notopterus or Sperata seenghala. This study also concluded that the prevalence of parasites increased with increasing length, size, and age of fish.
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Affiliation(s)
- Amana Shafiq
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan; (M.H.-u.-R.)
| | - Farzana Abbas
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan; (M.H.-u.-R.)
| | - Muhammad Hafeez-ur-Rehman
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan; (M.H.-u.-R.)
| | | | | | - Iffat Amin
- Department of Zoology, Kinnaird College for Women, Lahore 54000, Pakistan
| | - Hmidullah
- Department of Zoology, Islamia University Bahawalpur (Bahawalnagar Campus), Bahawalnagar 63100, Pakistan
| | - Ramzi A. Mothana
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammed S. Alharbi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Imran Khan
- Department of Biochemical Engineering, College of Engineering, Keimyung University, 1095 Dalgubeol-Daero, Dalseo-gu, Daegu 42601, Republic of Korea
| | - Atif Ali Khan Khalil
- Department of Pharmacognosy, Faculty of Pharmaceutical and Allied Health Sciences, Lahore College for Women University, Lahore 54000, Pakistan
| | - Bashir Ahmad
- Department of Zoology, University of Malakand, Chakdara 18800, Pakistan
| | - Nimra Mubeen
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan; (M.H.-u.-R.)
| | - Muneeba Akram
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan; (M.H.-u.-R.)
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Prachumchai R, Cherdthong A. Black Soldier Fly Larva Oil in Diets with Roughage to Concentrate Ratios on Fermentation Characteristics, Degradability, and Methane Generation. Animals (Basel) 2023; 13:2416. [PMID: 37570225 PMCID: PMC10416926 DOI: 10.3390/ani13152416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Currently, the scarcity of high-quality, expensive animal feed is a primary factor driving up the cost of animal husbandry. As a result, most researchers have focused on improving the potential of using alternative feed resources derived from the black soldier fly larva. In particular, the utilization of oil from black fly larvae is a byproduct of the industry. The aim of this study was to investigate the influence of black soldier fly larva oils and the proportion of roughage-to-concentrate ratios on gas kinetics, rumen characteristics, degradability, and mitigate CH4 production by using in vitro gas production techniques. The in vitro investigation used a completely randomized design (CRD) with a 2 × 4 factorial arrangement. The level of R:C ratios (60:40 and 40:60) were factor A, while BSFO levels (0, 2, 4, and 6% of DM) were factor B. Under this investigation, the combined impact of R:C ratio and BSFO on the kinetics of gas and accumulative gas production was found to be significant (p < 0.01). After 4 h of incubation, the pH and ammonia-nitrogen (NH3-N) concentration were found to be impacted by the inclusion of BSFO levels at different R:C-ratios (p < 0.01). Moreover, after 4 and 8 h of incubation, supplementing the BSFO at 4% with the level of R:C ratio at 40:60 resulted in a significant reduction in the amount of CH4 in the rumen (p < 0.05). However, the inclusion of BSFO levels at different R:C ratios had no effect on the degradability of DM after 12 and 24 h of incubation (p > 0.05), whereas increasing the concentration of BSFO in concentrate at 6% reduced the DM degradability after 24 h of incubation (p < 0.05). Furthermore, adding BSFO to the diet at various R:C ratios enhanced the propionate (C3) concentration, with the highest level observed with the level of R:C ratio at 40:60 and 4% BSFO inclusion (p < 0.05). To summarize, the addition of BSFO at 4% with a 40:60 of R:C ratio increased C3 levels, decreased CH4 emission, and preserved DM degradability. A R:C ratio of 40:60 could improve the total volatile fatty acids and digestibility. Moreover, the inclusion of 6% BSFO at different R:C ratios lowered the in vitro dry matter digestibility, in vitro organic matter digestibility, NH3-N, and protozoal populations.
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Affiliation(s)
| | - Anusorn Cherdthong
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand;
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Antonius A, Pazla R, Putri EM, Negara W, Laia N, Ridla M, Suharti S, Jayanegara A, Asmairicen S, Marlina L, Marta Y. Effectiveness of herbal plants on rumen fermentation, methane gas emissions, in vitro nutrient digestibility, and population of protozoa. Vet World 2023; 16:1477-1488. [PMID: 37621549 PMCID: PMC10446706 DOI: 10.14202/vetworld.2023.1477-1488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/12/2023] [Indexed: 08/26/2023] Open
Abstract
Background and Aim Herbal plants have the potential to reduce the population of metagonic bacteria and protozoa due to the bioactive compound contained in herbal plants. This study aimed to evaluate the effect of herbal plant supplementation on rumen fermentation characteristics, methane (CH4) gas emissions, in vitro nutrient digestibility, and protozoan populations. Materials and Methods This study consisted of two stages. Stage I involved determining the potential of herbal plants to increase total gas production (Orskov and McDonald methods) and reduce the protozoan population (Hristov method). Three potential herbs were selected at this stage and used in Stage II as supplements in the palm kernel cake (PKC)-based diet (30% herbal plants + 70% PKC). Proximate and Van Soest analyses were used to determine the chemical composition. In vitro dry matter digestibility (IVDMD), organic matter (IVOMD), and rumen fermentation characteristics were determined using Theodorous method. Conway microdiffusion was used to determine ammonia concentration (NH3). Gas chromatography was used to determine the total and partial volatile fatty acid production. Results The results of the first stage showed that seven herbal plants (Moringa oleifera, Rhodomyrtus tomentosa, Clerodendron serratum, Curcuma longa Linn., Urena lobata, Uncaria, and Parkia timoriana) significantly differed in terms of total gas production (p < 0.05). Herbal plants can increase gas production and reduce protozoan populations. The highest total gas production was observed using P. timoriana, M. oleifera, and C. longa Linn. Moringa oleifera plants were the most effective in lowering protozoa population. In Stage 2, the supplementation of herbal plants in PKC-based-diet significantly increased IVDMD, that was ranged from 56.72% to 65.77%, IVOMD that was ranged from 52.10% to 59.54%, and NH3, that was ranged from 13.20 mM to 17.91 mM. Volatile fatty acid partial and total gas production potential and CH4 gas emissions were also significantly different from those of the control (p < 0.05). Conclusion Supplementation of M. oleifera, C. longa Linn., and P. timoriana in ruminant diet effectively increased total gas production, IVDMD percentage, and IVOMD, and reduced CH4 gas emissions and protozoa populations during rumen fermentation.
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Affiliation(s)
- Antonius Antonius
- Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Jl. Raya Jakarta Bogor Cibinong, 16915, Indonesia
| | - Roni Pazla
- Department of Animal Nutrition, Faculty of Animal Science, Andalas University, Jl. Limau Manis, Padang, 25163, Indonesia
| | - Ezi Masdia Putri
- Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Jl. Raya Jakarta Bogor Cibinong, 16915, Indonesia
| | - Windu Negara
- Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Jl. Raya Jakarta Bogor Cibinong, 16915, Indonesia
| | - Nursanti Laia
- State community Academy Nias Utara, Jl Lolofoso Lotu Kab. Nias Utara, 22853, Indonesia
| | - Muhammad Ridla
- Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Jl. Agatis Kampus IPB Dramaga Bogor, 16680, Indonesia
| | - Sri Suharti
- Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Jl. Agatis Kampus IPB Dramaga Bogor, 16680, Indonesia
| | - Anuraga Jayanegara
- Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Jl. Agatis Kampus IPB Dramaga Bogor, 16680, Indonesia
| | - Sharli Asmairicen
- Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Jl. Raya Jakarta Bogor Cibinong, 16915, Indonesia
| | - Leni Marlina
- Research Center for Agroindustry, National Research and Innovation Agency (BRIN). Jl. Puspitek Tangerang Selatan, 15314, Indonesia
| | - Yoselanda Marta
- Center for Breeding Superior Livestock and Forage for Animal Feed Padang Mengatas, Jl. Raya Payakumbuh-Lintau, KM.9 Pekan Sabtu, Payakumbuh, 26201, Indonesia
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Acosta-Lozano N, Barros-Rodríguez M, Guishca-Cunuhay C, Andrade-Yucailla V, Contreras-Barros K, Sandoval-Castro C, Elghandour MMMY, Zeidan Mohamed Salem A. Potential Effect of Dietary Supplementation of Tannin-Rich Forage on Mitigation of Greenhouse Gas Production, Defaunation and Rumen Function. Vet Sci 2023; 10:467. [PMID: 37505871 PMCID: PMC10383649 DOI: 10.3390/vetsci10070467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/20/2023] [Accepted: 06/23/2023] [Indexed: 07/29/2023] Open
Abstract
This experiment evaluated the effect of including Acacia mearnsii leaves in a high-fiber diet (corn stover), on ruminal degradation kinetics, digestibility, microbial biomass production, and gas, CH4, and CO2 production. Four experimental diets were tested, including a control with 100% corn stover (T1), and three additional diets with corn stover supplemented at 15% A. mearnsii leaves (T2), 30% A. mearnsii leaves (T3) and 45% of A. mearnsii leaves (T4). The highest dry matter in situ degradation (p ≤ 0.001) and in vitro digestibility (p ≤ 0.001) was found in T1 (80.6 and 53.4%, respectively) and T2 (76.4 and 49.6%, respectively) diets. A higher population of holotrich and entodiniomorph ruminal protozoa was found (p = 0.0001) in T1 at 12 and 24 h. Diets of T1 and T2 promoted a higher (p = 0.0001) microbial protein production (314.5 and 321.1 mg/0.5 g DM, respectively). Furthermore, a lower amount of CH4 was found (p < 0.05) with T2, T3 and T4. It is concluded that it is possible to supplement up to 15% of A. mearnsii leaves (30.5 g TC/kg DM) in ruminant's diets. This decreased the population of protozoa (holotrich and entodiniomorph) as well as the CH4 production by 35.8 and 18.5%, respectively, without generating adverse effects on the ruminal degradation kinetics, nutrient digestibility and microbial protein production.
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Affiliation(s)
- Néstor Acosta-Lozano
- Centro de Investigaciones Agropecuarias, Facultad de Ciencias Agrarias, Universidad Estatal Península de Santa Elena, La Libertad 240204, Ecuador
| | - Marcos Barros-Rodríguez
- Facultad de Ciencias Agropecuarias, Universidad Técnica de Ambato, Sector el Tambo-La Universidad, vía a Quero, Cevallos 1801334, Ecuador
- Department of Animal Nutrition and Rumen Biotechnology, Ruminant Feedlot Ranch-PROCESA, Street Playita-Estero Hondo, La Mana 050202, Ecuador
| | - Carlos Guishca-Cunuhay
- Department of Animal Nutrition and Rumen Biotechnology, Ruminant Feedlot Ranch-PROCESA, Street Playita-Estero Hondo, La Mana 050202, Ecuador
| | - Veronica Andrade-Yucailla
- Centro de Investigaciones Agropecuarias, Facultad de Ciencias Agrarias, Universidad Estatal Península de Santa Elena, La Libertad 240204, Ecuador
| | - Katherine Contreras-Barros
- Facultad de Ciencias Biológicas, Universidad Central del Ecuador, Campus El Dorado-Itchimbía, Quito 170403, Ecuador
| | - Carlos Sandoval-Castro
- Departamento de Nutrición Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Carretera Mérida-Xmatkuil Km. 15.5. Apdo. 4-116 Itzimná, Mérida 97100, Mexico
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Kholif AE. A Review of Effect of Saponins on Ruminal Fermentation, Health and Performance of Ruminants. Vet Sci 2023; 10:450. [PMID: 37505855 PMCID: PMC10385484 DOI: 10.3390/vetsci10070450] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/06/2023] [Accepted: 07/08/2023] [Indexed: 07/29/2023] Open
Abstract
Saponins are steroid, or triterpene glycoside, compounds found in plants and plant products, mainly legumes. However, some plants containing saponins are toxic. Saponins have both positive and negative roles in animal nutrition. Saponins have been shown to act as membrane-permeabilizing, immunostimulant, hypocholesterolaemic, and defaunating agents in the rumen for the manipulation of ruminal fermentation. Moreover, it has been reported that saponins have impair protein digestion in the gut to interact with cholesterol in the cell membrane, cause cell rupture and selective ruminal protozoa elimination, thus improving N-use efficiency and resulting in a probable increase in ruminant animal performance.
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Affiliation(s)
- Ahmed E Kholif
- Dairy Science Department, National Research Centre, 33 Bohouth St. Dokki, Giza 12622, Egypt
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Hoque MM, Espinoza-Vergara G, McDougald D. Protozoan predation as a driver of diversity and virulence in bacterial biofilms. FEMS Microbiol Rev 2023; 47:fuad040. [PMID: 37458768 DOI: 10.1093/femsre/fuad040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/19/2023] [Accepted: 07/07/2023] [Indexed: 07/27/2023] Open
Abstract
Protozoa are eukaryotic organisms that play a crucial role in nutrient cycling and maintaining balance in the food web. Predation, symbiosis and parasitism are three types of interactions between protozoa and bacteria. However, not all bacterial species are equally susceptible to protozoan predation as many are capable of defending against predation in numerous ways and may even establish either a symbiotic or parasitic life-style. Biofilm formation is one such mechanism by which bacteria can survive predation. Structural and chemical components of biofilms enhance resistance to predation compared to their planktonic counterparts. Predation on biofilms gives rise to phenotypic and genetic heterogeneity in prey that leads to trade-offs in virulence in other eukaryotes. Recent advances, using molecular and genomics techniques, allow us to generate new information about the interactions of protozoa and biofilms of prey bacteria. This review presents the current state of the field on impacts of protozoan predation on biofilms. We provide an overview of newly gathered insights into (i) molecular mechanisms of predation resistance in biofilms, (ii) phenotypic and genetic diversification of prey bacteria, and (iii) evolution of virulence as a consequence of protozoan predation on biofilms.
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Affiliation(s)
- M Mozammel Hoque
- Australian Institute for Microbiology & Infection, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Gustavo Espinoza-Vergara
- Australian Institute for Microbiology & Infection, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Diane McDougald
- Australian Institute for Microbiology & Infection, University of Technology Sydney, Sydney, NSW 2007, Australia
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Pargass I, Wint C, Suepaul R, Frontera-Acevedo K, Qurollo BA. First reported case of leishmaniasis in a cat in Trinidad and Tobago. Vet Parasitol Reg Stud Reports 2023; 42:100896. [PMID: 37321792 DOI: 10.1016/j.vprsr.2023.100896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/17/2023]
Abstract
A 3-year-old, female, domestic shorthair cat, was presented to the Veterinary Teaching Hospital at the School of Veterinary Medicine (SVM), Trinidad and Tobago for a swollen nose, and multiple, variably sized small masses on both ears. The initial diagnostic tests included a CBC, serum biochemistry profile, cytological evaluation of masses on the ear and nose, and FeLV/FIV testing. The CBC and biochemistry results were unremarkable except for a hyperproteinaemia and hyperglobulinemia. Cytology of the nose and ear lesions revealed mixed inflammation and high numbers of intracellular and extracellular organisms consistent with Leishmania amastigotes. The cat was FeLV/FIV negative. Histopathology and Leishmania IFA and PCR analysis were subsequently performed, confirming the Leishmania diagnosis. The PCR, DNA sequencing and phylogenetic tree analyses identified L. amazonensis. This is the first reported case of L. amazonensis infection in a domestic animal in Trinidad with molecular characterization indicating it exists in the region and is likely being transmitted by sandflies.
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Affiliation(s)
- Indira Pargass
- School of Veterinary Medicine (SVM), Faculty of Medical Sciences, The University of the West Indies (UWI), Champs Fleurs, Trinidad and Tobago.
| | - Crystal Wint
- Veterinary Teaching Hospital, North Central Regional Health Authority, Eric Williams Medical Sciences Complex, Champs Fleurs, Trinidad and Tobago
| | - Rod Suepaul
- School of Veterinary Medicine (SVM), Faculty of Medical Sciences, The University of the West Indies (UWI), Champs Fleurs, Trinidad and Tobago
| | - Karelma Frontera-Acevedo
- School of Veterinary Medicine (SVM), Faculty of Medical Sciences, The University of the West Indies (UWI), Champs Fleurs, Trinidad and Tobago
| | - Barbara A Qurollo
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University (NCSU), Raleigh, NC, USA
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Hardman RH, Ammar S, Gerhold R, Sutton W, Carter ED, Snyder S, Neto JDS, Tarkington M, Gray MJ, Miller DL. Coccidiosis in Wild Eastern Newts (Notophthalmus viridescens): An Unexpected Finding in Consecutive Mortality Events in Tennessee, USA. J Wildl Dis 2023; 59:479-486. [PMID: 37179488 DOI: 10.7589/jwd-d-22-00107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 02/13/2023] [Indexed: 05/15/2023]
Abstract
Wildlife diseases are a major threat for species conservation, and there is a growing need to implement more comprehensive disease response programs to better identify these diseases of concern. During March 2017, we observed moribund and dead eastern newts, Notophthalmus viridescens, in a single pond in middle Tennessee. All moribund individuals were emaciated. We euthanized and processed all individuals immediately on-site and later performed histopathology and quantitative PCR for ranavirus, the protist Perkinsea, and chytrid fungi Batrachochytrium dendrobatidis and Batrachochytrium salamandrivorans. One newt was positive for ranavirus. Histopathology showed no evidence of ranavirosis but did reveal overwhelming coccidiosis. Overlapping partial sequences of coccidian 18S subunit DNA showed a 96.4% match with Eimeria steinhausi, suggesting that lesions were due to a previously undescribed Eimeria sp. In 2019, two more moribund newts were encountered at the same pond. Histopathology revealed the same suspicious parasitic organisms, and one individual was positive for B. dendrobatidis. Further research on how seasonal and other environmental parameters may influence coccidia-associated morbidity and mortality is warranted. These events highlight the importance of histopathologic evaluation of mortality events and provide guidance for investigation of future outbreaks.
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Affiliation(s)
- Rebecca H Hardman
- University of Tennessee, Center for Wildlife Health, Department of Forestry, Wildlife, and Fisheries, 427 Plant Biotechnology Building 2505 E. J. Chapman Dr., Knoxville, Tennessee 37996, USA
- University of Tennessee, College of Veterinary Medicine, Department of Biomedical and Diagnostic Sciences, 2407 River Dr., Knoxville, Tennessee 37996, USA
- Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, 100 8th Ave. SE, St. Petersburg, Florida 33701, USA
| | - Sawsan Ammar
- University of Tennessee, College of Veterinary Medicine, Department of Biomedical and Diagnostic Sciences, 2407 River Dr., Knoxville, Tennessee 37996, USA
- The University of Sadat City, College of Veterinary Medicine, Sadat City, Menofia 32511 Egypt
| | - Richard Gerhold
- University of Tennessee, Center for Wildlife Health, Department of Forestry, Wildlife, and Fisheries, 427 Plant Biotechnology Building 2505 E. J. Chapman Dr., Knoxville, Tennessee 37996, USA
- University of Tennessee, College of Veterinary Medicine, Department of Biomedical and Diagnostic Sciences, 2407 River Dr., Knoxville, Tennessee 37996, USA
| | - William Sutton
- Wildlife Ecology Laboratory, Tennessee State University, Department of Agricultural and Environmental Sciences, 3500 John A. Merritt Blvd., Farrell-Westbrook Building, Nashville, Tennessee 37209, USA
| | - E Davis Carter
- University of Tennessee, Center for Wildlife Health, Department of Forestry, Wildlife, and Fisheries, 427 Plant Biotechnology Building 2505 E. J. Chapman Dr., Knoxville, Tennessee 37996, USA
| | - Shawn Snyder
- Wildlife Ecology Laboratory, Tennessee State University, Department of Agricultural and Environmental Sciences, 3500 John A. Merritt Blvd., Farrell-Westbrook Building, Nashville, Tennessee 37209, USA
| | - Jeronimo da Silva Neto
- Wildlife Ecology Laboratory, Tennessee State University, Department of Agricultural and Environmental Sciences, 3500 John A. Merritt Blvd., Farrell-Westbrook Building, Nashville, Tennessee 37209, USA
| | - Meredith Tarkington
- University of Tennessee, Center for Wildlife Health, Department of Forestry, Wildlife, and Fisheries, 427 Plant Biotechnology Building 2505 E. J. Chapman Dr., Knoxville, Tennessee 37996, USA
| | - Matthew J Gray
- University of Tennessee, Center for Wildlife Health, Department of Forestry, Wildlife, and Fisheries, 427 Plant Biotechnology Building 2505 E. J. Chapman Dr., Knoxville, Tennessee 37996, USA
| | - Debra L Miller
- University of Tennessee, Center for Wildlife Health, Department of Forestry, Wildlife, and Fisheries, 427 Plant Biotechnology Building 2505 E. J. Chapman Dr., Knoxville, Tennessee 37996, USA
- University of Tennessee, College of Veterinary Medicine, Department of Biomedical and Diagnostic Sciences, 2407 River Dr., Knoxville, Tennessee 37996, USA
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Chauvin P, Barba F, Guemas E, Charpentier E, Cottrel C, Fillaux J, Valentin A, Baklouti S, Cassaing S, Ménard S, Berry A, Iriart X. Evaluation of the Performance of the Novodiag ® Stool Parasites Assay for the Detection of Intestinal Protozoa and Microsporidia. Pathogens 2023; 12:889. [PMID: 37513736 PMCID: PMC10385646 DOI: 10.3390/pathogens12070889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/22/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
OBJECTIVES We aimed to assess the performance of the Novodiag® Stool Parasites (NSP) assay in the diagnosis of the most common intestinal protozoan and microsporidia infections. METHODS A panel of 167 selected stool samples was retrospectively analysed with the NSP assay and compared to routine microscopy and qPCR methods for the detection of pathogenic protozoa and microsporidia. RESULTS Whereas specificity was high for all protozoa and microsporidia, NSP sensitivity was strongly dependent on the comparative method used as reference. When compared to microscopic methods, NSP sensitivity was high (96.7 to 100%) for Blastocystis hominis, Entamoeba histolytica and Cyclospora cayetanensis but was lower for Giardia intestinalis (85.2%) and ≤50% for Cystoisospora belli and Dientamoeba fragilis. In comparison to conventional qPCR, the NSP assay demonstrated lower sensitivity characteristics dependent on parasite loads, reaching 60 to 70% for G. intestinalis, D. fragilis, Cryptosporidium spp. and E. histolytica. Sensitivity was 100% for Enterocytozoon bieneusi, but none of the five samples containing Encephalitozoon spp. were detected. CONCLUSIONS The overall performance of the NSP assay in the diagnosis of gastrointestinal protozoa and microsporidia seems to be better than or equivalent to that observed with microscopic methods but inferior to that obtainable with classical targeted qPCR.
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Affiliation(s)
- Pamela Chauvin
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
| | - Florie Barba
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
| | - Emilie Guemas
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), Université de Toulouse, CNRS UMR5051, INSERM UMR1291, Université Paul Sabatier, 31024 Toulouse, France
| | - Eléna Charpentier
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
| | - Claire Cottrel
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), Université de Toulouse, CNRS UMR5051, INSERM UMR1291, Université Paul Sabatier, 31024 Toulouse, France
| | - Judith Fillaux
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- RESTORE Institute, UMR 1301-Inserm 5070-CNRS EFS Université Paul Sabatier, 31100 Toulouse, France
| | - Alexis Valentin
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- UMR 152 PHARMA-DEV, IRD, UPS, Université de Toulouse, 31062 Toulouse, France
| | - Sarah Baklouti
- Laboratoire de Pharmacocinétique et Toxicologie, CHU de Toulouse, 31059 Toulouse, France
- INTHERES, Université de Toulouse, INRAE, ENVT, 31076 Toulouse, France
| | - Sophie Cassaing
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- RESTORE Institute, UMR 1301-Inserm 5070-CNRS EFS Université Paul Sabatier, 31100 Toulouse, France
| | - Sandie Ménard
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), Université de Toulouse, CNRS UMR5051, INSERM UMR1291, Université Paul Sabatier, 31024 Toulouse, France
| | - Antoine Berry
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), Université de Toulouse, CNRS UMR5051, INSERM UMR1291, Université Paul Sabatier, 31024 Toulouse, France
| | - Xavier Iriart
- Service de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Toulouse, 31059 Toulouse, France
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), Université de Toulouse, CNRS UMR5051, INSERM UMR1291, Université Paul Sabatier, 31024 Toulouse, France
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Gebru H, Deyissia N, Medhin G, Kloos H. The Association of Sanitation and Hygiene Practices With Intestinal Parasitic Infections Among Under-14 Children in Rural Dire Dawa, Eastern Ethiopia: A Community Based Cross-sectional Study. Environ Health Insights 2023; 17:11786302231180801. [PMID: 37362236 PMCID: PMC10286215 DOI: 10.1177/11786302231180801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 05/22/2023] [Indexed: 06/28/2023]
Abstract
Background Intestinal parasitic infections (IPIs) are neglected tropical diseases. Sanitation and hygiene are vital components for achieving sustainable control of intestinal parasitic infections. Children are the most vulnerable to intestinal parasitic infections because of their immature immune systems and frequent exposure to unsanitary environments. The aim of this study was to assess the magnitude of IPIs and associated risk factors, including sanitation and hygiene practices, among under-14-year-old children in rural Dire Dawa, eastern Ethiopia. Methods This community-based cross-sectional 'study included 778 subjects aged 1 to 14 years. Data were collected using questionnaires and stool examinations. The direct wet-mount method and formol-ether concentration techniques were performed to identify IPIs. Data Analysis: A descriptive statistic was used to show the prevalence of IPIs. Bi-variable and multivariable analysis using the logistic regression model was carried out. Results The outputs are presented using an adjusted odds ratio (aOR) with 95% confidence intervals (CIs). The prevalence of 5 intestinal parasites was 33.7% (95% CI = 30.4%-37%). Giardia intestinalis (15.2%) and Hymenolepis nana (11.6%) had the highest prevalence. The odds of IPIs among children of illiterate mothers were 13.1 times higher when compared with children of mothers with secondary education (aOR = 13.1, P = .02), and the odds of IPIs among children from households that have unclean latrines were 1.8 times higher when compared with children from households that have clean latrines. (aOR = 1.8, P = .03). Children from households that discard solid waste in open fields had 1.7 times higher odds of having a positive result than children from households that burn their waste (aOR = 1.7, P = .03). However, children without a swimming habit (aOR = 0.4, P = .000) and asymptomatic children (aOR = 0.3, P = .000) were protective against IPIs. Conclusions IPIs continue to be a public health problem in rural parts of Dire Dawa. The prevalence of Giardia intestinalis and H. nana could be of public health importance in this setting. Solid waste management, latrine cleanliness, mothers' level of education, and child swimming habits in unclean accumulated water were significantly associated with IPIs. Therefore, efforts should be made to ensure intervention, considering such risks.
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Affiliation(s)
- Heroda Gebru
- Ethiopian Institute of Water Resources, Addis Ababa University, Addis Abeba, Ethiopia
| | - Negussie Deyissia
- School of Public Health, College of Health Sciences, Addis Ababa University, Addis Abeba, Ethiopia
| | - Girmay Medhin
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Abeba, Ethiopia
| | - Helmut Kloos
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
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DeMichele E, Sosnowski O, Buret AG, Allain T. Regulatory Functions of Hypoxia in Host-Parasite Interactions: A Focus on Enteric, Tissue, and Blood Protozoa. Microorganisms 2023; 11:1598. [PMID: 37375100 PMCID: PMC10303274 DOI: 10.3390/microorganisms11061598] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Body tissues are subjected to various oxygenic gradients and fluctuations and hence can become transiently hypoxic. Hypoxia-inducible factor (HIF) is the master transcriptional regulator of the cellular hypoxic response and is capable of modulating cellular metabolism, immune responses, epithelial barrier integrity, and local microbiota. Recent reports have characterized the hypoxic response to various infections. However, little is known about the role of HIF activation in the context of protozoan parasitic infections. Growing evidence suggests that tissue and blood protozoa can activate HIF and subsequent HIF target genes in the host, helping or hindering their pathogenicity. In the gut, enteric protozoa are adapted to steep longitudinal and radial oxygen gradients to complete their life cycle, yet the role of HIF during these protozoan infections remains unclear. This review focuses on the hypoxic response to protozoa and its role in the pathophysiology of parasitic infections. We also discuss how hypoxia modulates host immune responses in the context of protozoan infections.
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Affiliation(s)
- Emily DeMichele
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Olivia Sosnowski
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Andre G. Buret
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Thibault Allain
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
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Ariyadasa S, Taylor W, Weaver L, McGill E, Billington C, Pattis I. Nonbacterial Microflora in Wastewater Treatment Plants: an Underappreciated Potential Source of Pathogens. Microbiol Spectr 2023; 11:e0048123. [PMID: 37222623 PMCID: PMC10269893 DOI: 10.1128/spectrum.00481-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/09/2023] [Indexed: 05/25/2023] Open
Abstract
Wastewater treatment plants (WWTPs) receive and treat large volumes of domestic, industrial, and urban wastewater containing pathogenic and nonpathogenic microorganisms, chemical compounds, heavy metals, and other potentially hazardous substances. WWTPs play an essential role in preserving human, animal, and environmental health by removing many of these toxic and infectious agents, particularly biological hazards. Wastewater contains complex consortiums of bacterial, viral, archaeal, and eukaryotic species, and while bacteria in WWTP have been extensively studied, the temporal and spatial distribution of nonbacterial microflora (viruses, archaea, and eukaryotes) is less understood. In this study, we analyzed the viral, archaeal, and eukaryotic microflora in wastewater throughout a treatment plant (raw influent, effluent, oxidation pond water, and oxidation pond sediment) in Aotearoa (New Zealand) using Illumina shotgun metagenomic sequencing. Our results suggest a similar trend across many taxa, with an increase in relative abundance in oxidation pond samples compared to influent and effluent samples, except for archaea, which had the opposite trend. Additionally, some microbial families, such as Podoviridae bacteriophages and Apicomplexa alveolates, appeared largely unaffected by the treatment process, with their relative abundance remaining stable throughout. Several groups encompassing pathogenic species, such as Leishmania, Plasmodium, Toxoplasma, Apicomplexa, Cryptococcus, Botrytis, and Ustilago, were identified. If present, these potentially pathogenic species could be a threat to human and animal health and agricultural productivity; therefore, further investigation is warranted. These nonbacterial pathogens should be considered when assessing the potential for vector transmission, distribution of biosolids to land, and discharge of treated wastewater to waterways or land. IMPORTANCE Nonbacterial microflora in wastewater remain understudied compared to their bacterial counterparts despite their importance in the wastewater treatment process. In this study, we report the temporal and spatial distributions of DNA viruses, archaea, protozoa, and fungi in raw wastewater influent, effluent, oxidation pond water, and oxidation pond sediments by using shotgun metagenomic sequencing. Our study indicated the presence of groups of nonbacterial taxa which encompass pathogenic species that may have potential to cause disease in humans, animals, and agricultural crops. We also observed higher alpha diversity in viruses, archaea, and fungi in effluent samples than in influent samples. This suggests that the resident microflora in the wastewater treatment plant may be making a greater contribution to the diversity of taxa observed in wastewater effluent than previously thought. This study provides important insights to better understand the potential human, animal, and environmental health impacts of discharged treated wastewater.
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Affiliation(s)
- Sujani Ariyadasa
- Institute of Environmental Science and Research, Christchurch, New Zealand
| | - William Taylor
- Institute of Environmental Science and Research, Christchurch, New Zealand
| | - Louise Weaver
- Institute of Environmental Science and Research, Christchurch, New Zealand
| | - Erin McGill
- Institute of Environmental Science and Research, Christchurch, New Zealand
| | - Craig Billington
- Institute of Environmental Science and Research, Christchurch, New Zealand
| | - Isabelle Pattis
- Institute of Environmental Science and Research, Christchurch, New Zealand
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Reyes-López M, Aguirre-Armenta B, Piña-Vázquez C, de la Garza M, Serrano-Luna J. Hemoglobin uptake and utilization by human protozoan parasites: a review. Front Cell Infect Microbiol 2023; 13:1150054. [PMID: 37360530 PMCID: PMC10289869 DOI: 10.3389/fcimb.2023.1150054] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 05/29/2023] [Indexed: 06/28/2023] Open
Abstract
The protozoan disease is a major global health concern. Amoebiasis, leishmaniasis, Chagas disease, and African sleeping sickness affect several million people worldwide, leading to millions of deaths annually and immense social and economic problems. Iron is an essential nutrient for nearly all microbes, including invading pathogens. The majority of iron in mammalian hosts is stored intracellularly in proteins, such as ferritin and hemoglobin (Hb). Hb, present in blood erythrocytes, is a very important source of iron and amino acids for pathogenic microorganisms ranging from bacteria to eukaryotic pathogens, such as worms, protozoa, yeast, and fungi. These organisms have developed adequate mechanisms to obtain Hb or its byproducts (heme and globin) from the host. One of the major virulence factors identified in parasites is parasite-derived proteases, essential for host tissue degradation, immune evasion, and nutrient acquisition. The production of Hb-degrading proteases is a Hb uptake mechanism that degrades globin in amino acids and facilitates heme release. This review aims to provide an overview of the Hb and heme-uptake mechanisms utilized by human pathogenic protozoa to survive inside the host.
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Canul-Ku LA, Sanginés-García JR, Urquizo EA, Canul-Solís JR, Valdivieso-Pérez IA, Vargas-Bello-Pérez E, Molina-Botero I, Arango J, Piñeiro-Vázquez ÁT. Effect of Pelagic Sargassum on In Vitro Dry Matter and Organic Matter Degradation, Gas Production, and Protozoa Population. Animals (Basel) 2023; 13:1858. [PMID: 37889796 PMCID: PMC10252004 DOI: 10.3390/ani13111858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/09/2023] [Accepted: 05/19/2023] [Indexed: 10/29/2023] Open
Abstract
This study determined the effect of pelagic Sargassum on in vitro dry matter and organic matter degradation, total gas production (TGP), and protozoa population. The treatments were different levels of Sargassum inclusion on a basal substrate (Stargrass hay; Cynodon nlemfuensis) as follows: T0 (control treatment based on Stargrass hay), T10 (90% Stargrass hay + 10% Sargassum), T20 (80% Stargrass hay + 20% Sargassum), and T30 (70% Stargrass hay + 30% Sargassum). Ruminal fermentation kinetics and protozoa population were determined during 72 h of in vitro incubations. Compared to control, dry matter degradability at 48 and 72 h and organic matter degradability at 24 and 48 h were higher in Sargassum treatments. TGP was lower with T20 at 48 h. The total population of protozoa and the concentration of Entodinium spp. were lower at T20 at 48 h and T30 at 72 h. Cl, S, Ca, K, and Zn (103, 5.97, 88.73, 285.70 g/kg, and 15,900 mg/kg) were high in Sargassum, reaching twice or even nine times higher than the contents in Stargrass (11.37, 1.60, 43.53, 87.73 g/kg, and 866.67 mg/kg). Overall, up to 30% pelagic Sargassum could be included in hay-based substrates from tropical grasses without negative effects on in vitro dry matter and organic matter degradability.
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Affiliation(s)
- Luis Alberto Canul-Ku
- Tecnológico Nacional de México, Instituto Tecnológico de Conkal, Conkal 97345, Mexico
| | | | - Edgar Aguilar Urquizo
- Tecnológico Nacional de México, Instituto Tecnológico de Conkal, Conkal 97345, Mexico
| | | | | | - Einar Vargas-Bello-Pérez
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK
- Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periférico R. Aldama Km 1, Chihuahua 31031, Mexico
| | - Isabel Molina-Botero
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Km 17 Recta Cali-Palmira, Cali A.A. 6713, Colombia (J.A.)
| | - Jacobo Arango
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Km 17 Recta Cali-Palmira, Cali A.A. 6713, Colombia (J.A.)
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Mathison BA, Bradbury RS, Pritt BS. Medical Parasitology Taxonomy Update, June 2020-June 2022. J Clin Microbiol 2023; 61:e0028622. [PMID: 36809084 PMCID: PMC10204622 DOI: 10.1128/jcm.00286-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
The taxonomy of medically important parasites continues to evolve. This minireview provides an update of additions and updates in the field of human parasitology from June 2020 through June 2022. A list of previously reported nomenclatural changes that have not been broadly adapted by the medical community is also included.
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Affiliation(s)
- Blaine A. Mathison
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA
| | | | - Bobbi S. Pritt
- Division of Clinical Microbiology, Mayo Clinic, Rochester, Minnesota, USA
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Omar M, Abdelal H. NETosis in Parasitic Infections: A Puzzle That Remains Unsolved. Int J Mol Sci 2023; 24:ijms24108975. [PMID: 37240321 DOI: 10.3390/ijms24108975] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Neutrophils are the key players in the innate immune system, being weaponized with numerous strategies to eliminate pathogens. The production of extracellular traps is one of the effector mechanisms operated by neutrophils in a process called NETosis. Neutrophil extracellular traps (NETs) are complex webs of extracellular DNA studded with histones and cytoplasmic granular proteins. Since their first description in 2004, NETs have been widely investigated in different infectious processes. Bacteria, viruses, and fungi have been shown to induce the generation of NETs. Knowledge is only beginning to emerge about the participation of DNA webs in the host's battle against parasitic infections. Referring to helminthic infections, we ought to look beyond the scope of confining the roles of NETs solely to parasitic ensnarement or immobilization. Hence, this review provides detailed insights into the less-explored activities of NETs against invading helminths. In addition, most of the studies that have addressed the implications of NETs in protozoan infections have chiefly focused on their protective side, either through trapping or killing. Challenging this belief, we propose several limitations regarding protozoan-NETs interaction. One of many is the duality in the functional responses of NETs, in which both the positive and pathological aspects seem to be closely intertwined.
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Affiliation(s)
- Marwa Omar
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Heba Abdelal
- LIS: Cross-National Data Center, Maison des Sciences Humaines, Esch-Belval, L-4366 Luxembourg, Luxembourg
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50
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Radhwi O, Almohammadi A, Almarzouki A, Barefah A, Bahashwan S, Alahwal H. Blastocystis sp.-An emerging cause of diarrhea post stem cell transplantation. Clin Case Rep 2023; 11:e7285. [PMID: 37143462 PMCID: PMC10152071 DOI: 10.1002/ccr3.7285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/14/2023] [Accepted: 04/19/2023] [Indexed: 05/06/2023] Open
Abstract
Key Clinical Message Protozoans are endemic in the Middle East and diarrhea workup post stem cell transplant should always include stool examination for ova and parasites. Abstract We present a case of Blastocystis sp. infection in a multiple myeloma patient who developed diarrhea on day five of post-autologous stem cell transplantation. Diarrhea is a major complication and a potential cause of mortality in this population. Testing for endemic protozoan is recommended.
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Affiliation(s)
- Osman Radhwi
- Hematology Department, Faculty of Medicine, King Abdulaziz University HospitalKing Abdulaziz UniversityJeddahSaudi Arabia
- Hematology Research Unit, King Fahd Medical Research CenterKing Abdulaziz UniversityJeddahSaudi Arabia
| | - Abdullah Almohammadi
- Hematology Department, Faculty of Medicine, King Abdulaziz University HospitalKing Abdulaziz UniversityJeddahSaudi Arabia
- Hematology Research Unit, King Fahd Medical Research CenterKing Abdulaziz UniversityJeddahSaudi Arabia
| | - Adel Almarzouki
- Hematology Department, Faculty of Medicine, King Abdulaziz University HospitalKing Abdulaziz UniversityJeddahSaudi Arabia
- Hematology Research Unit, King Fahd Medical Research CenterKing Abdulaziz UniversityJeddahSaudi Arabia
| | - Ahmed Barefah
- Hematology Department, Faculty of Medicine, King Abdulaziz University HospitalKing Abdulaziz UniversityJeddahSaudi Arabia
- Hematology Research Unit, King Fahd Medical Research CenterKing Abdulaziz UniversityJeddahSaudi Arabia
| | - Salem Bahashwan
- Hematology Department, Faculty of Medicine, King Abdulaziz University HospitalKing Abdulaziz UniversityJeddahSaudi Arabia
- Hematology Research Unit, King Fahd Medical Research CenterKing Abdulaziz UniversityJeddahSaudi Arabia
| | - Hatem Alahwal
- Hematology Department, Faculty of Medicine, King Abdulaziz University HospitalKing Abdulaziz UniversityJeddahSaudi Arabia
- Hematology Research Unit, King Fahd Medical Research CenterKing Abdulaziz UniversityJeddahSaudi Arabia
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