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León-Lara X, Atoche C, Arenas R, Martínez-Hernández F, Martínez-Chavarría LC, Xicohtencatl-Cortes J, Vázquez-Aceituno VA, Hernández-Castro R. Cyphellophora laciniata: A new etiological agent of chromoblastomycosis. J Mycol Med 2021; 32:101204. [PMID: 34598111 DOI: 10.1016/j.mycmed.2021.101204] [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: 05/26/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 11/30/2022]
Abstract
Chromoblastomycosis is a chronic subcutaneous mycosis caused by traumatic inoculation of dematiaceous fungi especially in tropical and subtropical areas. Cyphellophora genus include melanized fungi reported as etiological agents of skin and nail infections. We report a 60-year-old male from the south of Mexico with a 40-year history of chromoblastomycosis caused by Cyphellophora laciniata. The isolated fungus was identified by sequencing of the internal transcribed spacer region of rDNA. The patient was treated with itraconazole and cryosurgery with unsatisfactory results.
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Affiliation(s)
- Ximena León-Lara
- Sección de Micología, Hospital General "Dr. Manuel Gea González", Tlalpan 14080, Ciudad de México, México
| | - Carlos Atoche
- Laboratorio de Micología, Centro Dermatológico "Dr. Fernando Latapi", Yucatán 97000, México
| | - Roberto Arenas
- Sección de Micología, Hospital General "Dr. Manuel Gea González", Tlalpan 14080, Ciudad de México, México
| | - Fernando Martínez-Hernández
- Departamento de Ecología de Agentes Patógenos. Hospital General "Dr. Manuel Gea González", Tlalpan 14080. Ciudad de México, México
| | - Luary C Martínez-Chavarría
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia. Universidad Nacional Autónoma de México, 04510 Coyoacán, Ciudad de México, México
| | - Juan Xicohtencatl-Cortes
- Laboratorio de Bacteriología Intestinal, Hospital Infantil de México "Dr. Federico Gómez", Cuauhtémoc 06720, Ciudad de México, México
| | - Víctor A Vázquez-Aceituno
- Departamento de Ecología de Agentes Patógenos. Hospital General "Dr. Manuel Gea González", Tlalpan 14080. Ciudad de México, México
| | - Rigoberto Hernández-Castro
- Departamento de Ecología de Agentes Patógenos. Hospital General "Dr. Manuel Gea González", Tlalpan 14080. Ciudad de México, México.
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2
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Silva-Sanchez J, Barrios-Camacho H, Hernández-Rodriguez E, Duran-Bedolla J, Sanchez-Perez A, Martínez-Chavarría LC, Xicohtencatl-Cortes J, Hernández-Castro R, Garza-Ramos U. Molecular characterization of KPC-2-producing Klebsiella pneumoniae ST258 isolated from bovine mastitis. Braz J Microbiol 2021; 52:1029-1036. [PMID: 33580865 DOI: 10.1007/s42770-021-00445-y] [Citation(s) in RCA: 3] [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: 09/02/2020] [Accepted: 02/02/2021] [Indexed: 11/30/2022] Open
Abstract
Bovine mastitis, an inflammation of the mammary gland of dairy cattle, is the most prevalent disease causing economically important losses, reduced milk production, early culling, veterinary expenses, and higher death rates. Bovine mastitis infections are the main cause for the use of antibiotics; however, the emergence of multidrug-resistant bacteria and the poor or nil response to antibiotics has become a critical global health problem. The goal of this study was the characterization of bacterial infections associated with clinical bovine mastitis. All the isolates were multidrug-resistant and were negative for the production of extended spectrum β-lactamases. However, all isolates were identified as carbapenemase-producing organisms by the Carba NP test. The carbapenemase identified was the product of the KPC-2 gene. The isolates were identified as Klebsiella pneumoniae and contained virulence genes for fimbriae, lipopolysaccharides, nitrogen starvation genes, and siderophores. Sixty-nine percent of the KPC-2-producing isolates had the same plasmid profile, although the genetic mobilization of resistance by bacterial conjugation was unsuccessful. The carbapenemase corresponded to the plasmid-borne KPC-2 gene identified by Southern blot hybridization. The assay showed a positive signal in the 90 kb (69% of the isolates), 165 kb (31% of the isolates), and 130 kb (6% of the isolates) plasmids. The IncFIIy and IncFIIk replicons were detected among these K. pneumoniae isolates. The PFGE and MLST analysis showed that all of the isolates are comprised by two clones (A and B) belonging to Sequence Type 258. This is the first report of K. pneumoniae producing carbapenemase KPC-2 isolated from bovine mastitis.
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Affiliation(s)
- Jesús Silva-Sanchez
- Laboratorio de Resistencia Bacteriana, Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública (INSP), Av. Universidad # 655, Col. Santa María Ahuacatitlán. C.P, 62100, Cuernavaca, Morelos, México
| | - Humberto Barrios-Camacho
- Laboratorio de Resistencia Bacteriana, Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública (INSP), Av. Universidad # 655, Col. Santa María Ahuacatitlán. C.P, 62100, Cuernavaca, Morelos, México
| | - Emmanuel Hernández-Rodriguez
- Laboratorio de Resistencia Bacteriana, Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública (INSP), Av. Universidad # 655, Col. Santa María Ahuacatitlán. C.P, 62100, Cuernavaca, Morelos, México
| | - Josefina Duran-Bedolla
- Laboratorio de Resistencia Bacteriana, Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública (INSP), Av. Universidad # 655, Col. Santa María Ahuacatitlán. C.P, 62100, Cuernavaca, Morelos, México
| | - Alejandro Sanchez-Perez
- Laboratorio de Resistencia Bacteriana, Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública (INSP), Av. Universidad # 655, Col. Santa María Ahuacatitlán. C.P, 62100, Cuernavaca, Morelos, México
| | - Luary C Martínez-Chavarría
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, 04510, Ciudad de México, México
| | - Juan Xicohtencatl-Cortes
- Laboratorio de Bacteriología Intestinal, Hospital Infantil de México, Dr. Federico Gómez, Cuauhtémoc, 06720, Ciudad de México, México
| | - Rigoberto Hernández-Castro
- Departamento Ecología de Agentes Patógenos, Hospital General "Dr. Manuel Gea González", Calzada de Tlalpan 4800, 14080. Tlalpan, Cd de Mexico, Mexico.
| | - Ulises Garza-Ramos
- Laboratorio de Resistencia Bacteriana, Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública (INSP), Av. Universidad # 655, Col. Santa María Ahuacatitlán. C.P, 62100, Cuernavaca, Morelos, México.
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Campos-Macias P, Arenas R, Aquino CJ, Romero-Navarrete M, Martínez-Hernández F, Martínez-Chavarría LC, Xicohtencatl-Cortes J, Hernández-Castro R. Chromoblastomycosis caused by Fonsecaea monophora in Mexico. J Mycol Med 2021; 31:101114. [PMID: 33684836 DOI: 10.1016/j.mycmed.2021.101114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 09/23/2020] [Revised: 12/01/2020] [Accepted: 01/15/2021] [Indexed: 12/19/2022]
Abstract
Chromoblastomycosis is a chronic subcutaneous fungal infection caused by melanized fungi. It is usually an occupational mycosis affecting people in rural areas in tropical and subtropical regions. We present two cases of chromoblastomycosis in Mexican farmers, characterized by skin verrucous plaques. Direct examination with KOH 10% showed the presence of muriform cells. The fungal isolation was carried out in Sabouraud dextrose agar and molecular identification was achieved by 18S-ITS1-5.8S-ITS2-28S rRNA gene amplification and sequencing. Fonsecaeamonophora was identified in both cases. A therapy with itraconazole and terbinafine was used with a partial favorable response. However, patients did not return for medical examination after 4 months. The current status of the patients is unknown. We reported the first two cases of chromoblastomycosis caused by F. monophora in Mexico.
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Affiliation(s)
- Pablo Campos-Macias
- Facultad de Medicina, Hospital Aranda de la Parra, Universidad de Guanajuato, 37000 León, Guanajuato. Mexico
| | - Roberto Arenas
- Servicio de Micología, Hospital General "Dr. Manuel Gea González", 14080 Tlalpan, Ciudad de México, Mexico
| | - Caren J Aquino
- Centro Dermatológico del Sureste "Dr. Fernando Latapí", 29000 Tuxtla Gutiérrez, Chiapas. Mexico
| | | | - Fernando Martínez-Hernández
- Departamento de Ecología de Agentes Patógenos. Hospital General "Dr. Manuel Gea González", 14080 Tlalpan, Ciudad de México, Mexico
| | - Luary C Martínez-Chavarría
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia. Universidad Nacional Autónoma de México, 04510 Coyoacán, Ciudad de México, Mexico
| | - Juan Xicohtencatl-Cortes
- Laboratorio de Bacteriología Intestinal, Hospital Infantil de México "Dr. Federico Gómez", 06720 Cuauhtémoc, Ciudad de México, Mexico
| | - Rigoberto Hernández-Castro
- Departamento de Ecología de Agentes Patógenos. Hospital General "Dr. Manuel Gea González", 14080 Tlalpan, Ciudad de México, Mexico.
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Avila VA, López-García Y, Hernández-Castro R, Salas-Garrido CG, Ramírez-Lezama J, Calderón-Villa R, Martínez-Chavarría LC. First case of fatal equine meningoencephalitis caused by Halicephalobus gingivalis in Mexico. Vet Parasitol Reg Stud Reports 2020; 20:100399. [PMID: 32448540 DOI: 10.1016/j.vprsr.2020.100399] [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] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 01/16/2020] [Accepted: 03/12/2020] [Indexed: 10/24/2022]
Abstract
Aberrant nematode larval migration in the CNS of horses is rare but frequently fatal; one of the main etiological agents involved in this illness is Halicephalobus gingivalis. This soil nematode has been associated with several fatal equine meningoencephalitis reports worldwide; however, it had never been diagnosed in horses of Mexico. A 10 year-old Andalusian horse presented dysphagia, fever, weakness, prostration and ataxia; the patient expired during the medical attention. Post mortem examination was performed and no gross alterations were found. Histopathology revealed meningoencephalitis, vasculitis and intralesional adult nematodes, larvae and eggs compatible with Halicephalobus spp. A polymerase chain reaction (PCR) for the nuclear large subunit ribosomal RNA gene (LSU rDNA) of nematodes was performed from formalin-fixed and paraffin wax-embedded sections of brain. Posterior nucleotide sequence analysis of the amplified fragment identified the agent as H. gingivalis. To our knowledge, this is the first confirmed report of Halicephalobiasis in Mexico.
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Affiliation(s)
- V A Avila
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México
| | - Y López-García
- Departamento de Medicina, Cirugía y Zootecnia de Equinos, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México
| | - R Hernández-Castro
- Departamento de Ecología de Agentes Patógenos, Hospital General Manuel Gea González, México
| | - C G Salas-Garrido
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México
| | - J Ramírez-Lezama
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México
| | - R Calderón-Villa
- Departamento de Medicina, Cirugía y Zootecnia de Equinos, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México
| | - L C Martínez-Chavarría
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México.
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López-Crespo RA, Martínez-Chavarría LC, Lugo-García AT, Romero-Romero LP, García-Márquez LJ, Reyes-Matute A. Outbreak of francisellosis (Francisella noatunensis subsp. orientalis) in cultured neon jewel cichlids Hemichromis bimaculatus from Morelos, Mexico. Dis Aquat Organ 2019; 137:125-130. [PMID: 31854330 DOI: 10.3354/dao03429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Francisellosis is a disease caused by different species of the bacterial genus Francisella and has been diagnosed in a wide variety of animals, including fish. Francisellosis in fish is characterized by the development of non-specific clinical signs as well as the presence of numerous granulomas in several organs (mainly spleen and kidney). Ten neon jewel cichlids Hemichromis bimaculatus were submitted for diagnosis from a farm located in Morelos, Mexico. Gross examination, wet preparations, cytology, histopathology and PCR were performed. Affected fish showed lethargy, erratic swimming, imbalance and gasping. At the post mortem examination, multiple granulomas were observed in the kidney and spleen. Microscopically, granulomatous inflammation was observed in several organs. Species-specific PCR assay using DNA from the affected tissues of H. bimaculatus as a template demonstrated the presence of F. noatunensis subsp. orientalis (Fno) by amplifying a hypothetical protein gene of the Fno species. The end diagnosis of francisellosis is important for Mexican ornamental aquaculture, since it is necessary to implement measures for treatment, prevention, control and diagnosis. This is the first report of francisellosis in the neon jewel cichlid.
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Affiliation(s)
- Rubén A López-Crespo
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, CP 04510, Ciudad de México, México
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Martínez-Chavarría LC. Yersinia pestis-Host Immune Cells Interactions at Early Events During Bubonic Plague Infection. Curr Trop Med Rep 2016. [DOI: 10.1007/s40475-016-0071-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Martínez-Chavarría LC, Vadyvaloo V. Yersinia pestis and Yersinia pseudotuberculosis infection: a regulatory RNA perspective. Front Microbiol 2015; 6:956. [PMID: 26441890 PMCID: PMC4585118 DOI: 10.3389/fmicb.2015.00956] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 07/08/2015] [Accepted: 08/28/2015] [Indexed: 12/27/2022] Open
Abstract
Yersinia pestis, responsible for causing fulminant plague, has evolved clonally from the enteric pathogen, Y. pseudotuberculosis, which in contrast, causes a relatively benign enteric illness. An ~97% nucleotide identity over 75% of their shared protein coding genes is maintained between these two pathogens, leaving much conjecture regarding the molecular determinants responsible for producing these vastly different disease etiologies, host preferences and transmission routes. One idea is that coordinated production of distinct factors required for host adaptation and virulence in response to specific environmental cues could contribute to the distinct pathogenicity distinguishing these two species. Small non-coding RNAs that direct posttranscriptional regulation have recently been identified as key molecules that may provide such timeous expression of appropriate disease enabling factors. Here the burgeoning field of small non-coding regulatory RNAs in Yersinia pathogenesis is reviewed from the viewpoint of adaptive colonization, virulence and divergent evolution of these pathogens.
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Affiliation(s)
- Luary C Martínez-Chavarría
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México Mexico
| | - Viveka Vadyvaloo
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA USA
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