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Marina O Cesar, Eliana R Matushima, Ticiana Zwarg, Alice S de Oliveira, Thaís C Sanches, Adriana M Joppert, Lara B Keid, Trícia Maria F S Oliveira, Helena L Ferreira, Horwald Alexander Bedoya Llano, Guilherme Konradt, Matheus Viezzer Bianchi, Fábio Gregori, Luís Fernando P Gondim, Rodrigo M Soares
In a previous study in Brazil, six isolates of Sarcocystis spp. recovered from budgerigars fed sporocysts excreted by opossums of the genus Didelphis were characterized by means of sequencing fragments of gene coding cytochrome B (CYTB), internal transcribed spacer 1 (ITS1), and surface antigen genes (SAG2, SAG3 and SAG4). The isolates shared identical ITS1 and CYTB sequences, but differed at SAG2, SAG3 and SAG4: three allele variants of SAG2, 3 allele variants of SAG3 and 2 allele variants of SAG4 were encountered in three multilocus genotypes (MLGs) (MLG1, MLG2, and MLG3)...
March 6, 2018: Experimental Parasitology
Reda Mohamed
The aim of this study was to determine the morphometric values of the skull and the mandible of the common opossum from the Caribbean island of Trinidad and Tobago. The skulls and mandibles were obtained from ten opossums captured for research purposes. The skulls and mandibles were prepared and cleaned using standard method. Some anatomical landmarks of the skulls and mandibles were identified and measured. The results were important for identification of the common opossum via comparison and discussion of our results with that of other marsupial species...
March 9, 2018: Veterinary Sciences
Masaaki Sawada, Aiko Kakigano, Shinya Matsuzaki, Tsuyoshi Takiuchi, Kazuya Mimura, Keiichi Kumasawa, Masayuki Endo, Yutaka Ueda, Kiyoshi Yoshino, Tadashi Kimura
AIM: Previous studies have shown adverse obstetric outcomes of the laparoscopic resection of a rudimentary horn. Our study aimed to investigate the obstetric outcome in our institution and to review previous studies. METHODS: Using a retrospective analysis, data were reviewed from singleton pregnancies with maternal uterine anomalies at a medical center in Osaka, Japan, between January 2011 and March 2016. The uterine anomaly cases were divided into a 'postlaparoscopic resection of the rudimentary horn' group (study group) and an 'other uterine anomalies' (bicornuate uterus, uterine didelphys and unicornuate uterus) group (control group)...
March 8, 2018: Journal of Obstetrics and Gynaecology Research
Carolyn L Hodo, Gregory K Wilkerson, Elise C Birkner, Stanton B Gray, Sarah A Hamer
Natural infection of captive nonhuman primates (NHPs) with Trypanosoma cruzi (agent of Chagas disease) is an increasingly recognized problem in facilities across the southern USA, with negative consequences for NHP health and biomedical research. We explored a central Texas NHP facility as a nidus of transmission by characterizing parasite discrete typing units (DTU) in seropositive rhesus macaques (Macaca mulatta), identifying the wildlife reservoirs, and characterizing vector infection. In seropositive NHPs, we documented low and intermittent concentrations of circulating T...
March 1, 2018: EcoHealth
Fabiola Roman, Alena M Iñiguez, Matthew Yeo, Ana M Jansen
BACKGROUND: Trypanosoma cruzi is a protozoan parasite characterized by extensive genetic heterogeneity. There are currently six recognised, genetically distinct, monophyletic clades designated discrete typing units (DTUs). TcI has the broadest geographical range and most genetic diversity evidenced by a wide range of genetic markers applied to isolates spanning a vast geographical range across Latin America. However, little is known of the diversity of TcI that exists within sylvatic mammals across the geographical expanse of Brazil...
February 22, 2018: Parasites & Vectors
Soshi Kusunoki, Kuan-Gen Huang, Angelito Magno
OBJECTIVE: There are some reports of cervical cancer with uterus didelphys but a case of clear cell carcinoma (CCCC) with Obstructed Hemivagina and Ipsilateral Renal Anomaly (OHVIRA) syndrome is extremely rare. The aim of this paper was to report a case of CCCC with OHVIRA syndrome and the difficulty in making a preoperative diagnosis. CASE REPORT: A 65 years old woman presented with postmenopausal bleeding and pelvic examination showed right paracervical mass. Preoperative confirmation of cervical carcinoma was difficult due to the location of the mass, which was inaccessible by cervical punch biopsy...
February 2018: Taiwanese Journal of Obstetrics & Gynecology
Marina G Peres, Thais S Bacchiega, Camila M Appolinário, Acácia F Vicente, Mateus de Souza Ribeiro Mioni, Bruna L D Ribeiro, Clóvis R S Fonseca, Vanessa C Pelícia, Fernando Ferreira, Graziele P Oliveira, Jonatas S Abrahão, Jane Megid
Outbreaks of Vaccinia virus (VACV) affecting cattle and humans have been reported in Brazil in the last 15 years, but the origin of outbreaks remains unknown. Although VACV DNA have been already detected in mice (Mus musculus), opossums (Didelphis albiventris) and dogs during VACV zoonotic outbreaks, no transmission to cattle or humans from any of these were reported during Brazilian outbreaks. In this work, we assessed the PCR positivity to VACV in blood samples of cows and other domestic mammals, wild rodents and other wild mammals, and humans from areas with or without VACV infection reports...
January 18, 2018: Viruses
Emmanuel Oluchikwu Ani, Emmanuel Ajuluchukwu Ugwa, Aminu Bashir Taiye, Iwasam Elemi Agbor, Ibrahim Shaaibu Suleiman
INTRODUCTION: Simultaneous pregnancy in each uterine cavity of a double uterus is unusual but is a recognized risk factor for preterm labour and other poor obstetrics outcomes. The work has been reported in line with the SCARE criteria. PRESENTATION OF CASE: We report an unusual case of simultaneous pregnancy in each uterine cavity of a double uterus in a young African grand multipara who presented with a retained second twin following a preterm labour at home. DISCUSSION: A double or didelphys uterus as reported in the literatures is still uncommon even in Africa...
December 13, 2017: International Journal of Surgery Case Reports
Yoshihisa Hashiguchi, Eduardo A Gomez L, Abraham G Cáceres, Lenin N Velez, Nancy V Villegas, Kazue Hashiguchi, Tatsuyuki Mimori, Hiroshi Uezato, Hirotomo Kato
The vector Lutzomyia sand flies and reservoir host mammals of the Leishmania parasites, causing the Andean cutaneous leishmaniasis (Andean-CL, uta) in Peru and Ecuador were thoroughly reviewed, performing a survey of literatures including our unpublished data. The Peruvian L. (V.) peruviana, a principal Leishmania species causing Andean-CL in Peru, possessed three Lutzomyia species, Lu. peruensis, Lu. verrucarum and Lu. ayacuchensis as vectors, while the Ecuadorian L. (L.) mexicana parasite possessed only one species Lu...
February 2018: Acta Tropica
Camila Madeira Tavares Lopes, Rubem Figueiredo Sadok Menna-Barreto, Márcio Galvão Pavan, Mirian Cláudia De Souza Pereira, André Luiz R Roque
BACKGROUND: Didelphis spp. are a South American marsupial species that are among the most ancient hosts for the Trypanosoma spp. OBJECTIVES: We characterise a new species (Trypanosoma janseni n. sp.) isolated from the spleen and liver tissues of Didelphis aurita in the Atlantic Rainforest of Rio de Janeiro, Brazil. METHODS: The parasites were isolated and a growth curve was performed in NNN and Schneider's media containing 10% foetal bovine serum...
January 2018: Memórias do Instituto Oswaldo Cruz
Cailey Vandermark, Elliott Zieman, Esmarie Boyles, Clayton K Nielsen, Cheryl Davis, Francisco Agustín Jiménez
BACKGROUND: The northern limits of Trypanosoma cruzi across the territory of the United States remain unknown. The known vectors Triatoma sanguisuga and T. lecticularia find their northernmost limits in Illinois; yet, earlier screenings of those insects did not reveal the presence of the pathogen, which has not been reported in vectors or reservoir hosts in this state. OBJECTIVES: Five species of medium-sized mammals were screened for the presence of T. cruzi. METHODS: Genomic DNA was isolated from heart, spleen and skeletal muscle of bobcats (Lynx rufus, n = 60), raccoons (Procyon lotor, n = 37), nine-banded armadillos (Dasypus novemcinctus, n = 5), Virginia opossums (Didelphis virginiana, n = 3), and a red fox (Vulpes vulpes)...
January 2018: Memórias do Instituto Oswaldo Cruz
Felipe Fornazari, Helio Langoni, Pâmela Merlo Marson, Diego Borin Nóbrega, Carlos Roberto Teixeira
Leptospirosis is a disease of great importance in tropical regions. Infection occurs mainly through contact with water contaminated with the urine of infected animals, especially that of rodents. Despite the diversity and abundance of wild fauna in Brazil, little is known about the role of other wild species in the epidemiology of leptospirosis. This study aimed to investigate new reservoirs of Leptospira among wildlife in Brazil, using serological and molecular diagnoses in a large-sized sample. Biological samples were collected from 309 free-ranging mammals, belonging to 16 species...
February 2018: Acta Tropica
Samira Salim Mello Gallo, David Scott Lindsay, Nicole Brand Ederli, Filipe Pereira Matteoli, Thiago Motta Venancio, Francisco Carlos Rodrigues de Oliveira
This study was conducted to identify the Sarcocystis species that infect the opossum Didelphis aurita in order to determine which sporocysts they are excreating in to the environment and help determine the role of D. aurita in the epidemiology of Sarcocystis. Sporocysts were obtained from intestinal tracts of 8 of 13 D. aurita trapped in Rio de Janeiro state, Brazil, and were orally inoculated into Melopsittacus undulatus and Balb/c nude Mus musculus. Portions of organs and muscles were processed for histology, immunohistochemistry, transmission electron microscopy (TEM), and PCR using primers JNB 33/54, and ITS...
January 2018: Parasitology Research
Agnes Antônia Sampaio Pereira, Eduardo de Castro Ferreira, Ana Cristina Viana Mariano da Rocha Lima, Gabriel Barbosa Tonelli, Felipe Dutra Rêgo, Adriano Pereira Paglia, José Dilermando Andrade-Filho, Gustavo Fontes Paz, Célia Maria Ferreira Gontijo
Knowledge of potential reservoirs of Leishmania spp. in an anthropic environment is important so that surveillance and control measures can be implemented. The aim of this study was to investigate the infection by Leishmania in small mammals in an area located in Minas Gerais, Brazil, that undergoes changes in its natural environment and presents autochthonous human cases of cutaneous leishmaniasis (CL) and visceral leishmaniasis (VL). For the capture of the animals, Sherman and Tomahawk traps were used and distributed in the peridomicile of houses with reports of autochthonous cases of CL or VL...
2017: PloS One
Carlos Eduardo Faresin E Silva, Rodrigo Amaral de Andrade, Érica Martinha Silva de Souza, Eduardo Schmidt Eler, Maria Nazareth Ferreira da Silva, Eliana Feldberg
We investigated the karyotype of 18 didelphid species captured at 13 localities in the Brazilian Amazon, after conventional staining, C-banding, Ag-NOR and fluorescent in situ hybridization (FISH) using the 18S rDNA probe. Variations were found in the X chromosome, heterochromatin distribution and the 18S rDNA sequence. The main variation observed was in the position of the centromere in the X chromosome of Caluromys philander Linnaeus, 1758 and Marmosa murina Linnaeus, 1758. For both species, the X chromosome showed a geographical segregation in the pattern of variation between eastern and western Brazil, with a possible contact area in the central Amazon...
2017: Comparative Cytogenetics
Carolyn L Hodo, Sarah A Hamer
Wildlife species are critical for both feeding vectors and serving as reservoirs of zoonotic vector-borne pathogens. Transmission pathways leading to disease in humans or other target taxa might be better understood and managed given a complete understanding of the relative importance of different reservoir species in nature. Using the conceptual framework of "reservoir potential," which considers elements of both reservoir competence and vector-host contact, we review the wildlife reservoirs of Trypanosoma cruzi in the southern United States, where many species of triatomine vectors occur and wildlife maintain enzootic cycles that create a risk of spillover to humans, domestic dogs, and captive nonhuman primates that may develop Chagas disease...
July 6, 2017: ILAR Journal
E H Torres-Montoya, J M Zazueta-Moreno, L U Osuna-Martínez, H Castillo-Ureta, G Silva-Hidalgo, H S López-Moreno, I Osuna-Ramírez, E Noguera-Corona, J G Rendón-Maldonado
Gnathostoma turgidum is a nematode parasite that exploits the stomach of Virginian opossums, Didelphis virginiana, in Latin America. The opossum is the definitive host of G. turgidum in the wild. Intrahepatic growth and maturation of the parasite, subsequent migration to the stomach and spontaneous expulsion are common. However, the histopathological lesions caused by G. turgidum are poorly described. A better understanding of the life cycle of this parasite and the pathological changes in natural host-parasite interactions could help to clarify the progression of human infections caused by Gnathostoma binucleatum...
November 6, 2017: Journal of Helminthology
Karina Kapczuk, Zbigniew Friebe, Kinga Iwaniec, Witold Kędzia
STUDY OBJECTIVE: To assess the clinical course of obstructive Müllerian anomalies found in girls after menarche. DESIGN: A retrospective case series of adolescents who, between 2009 and 2016, were treated for vaginal or uterine obstructive malformations diagnosed after menarche. SETTING: Division of Gynecology, Poznań University of Medical Sciences, Poznań, Poland. PARTICIPANTS AND INTERVENTIONS: Twenty-two patients who, at the age range between 11...
October 10, 2017: Journal of Pediatric and Adolescent Gynecology
L R Inamassu, M J Mamprim, C R Dadalto, F C Cavaletti, M C Mello, B C Schimming
Patella, the kneecap, is the best known and largest of the sesamoid bones and is present in the quadriceps femoris tendon. Typical patella appears in all extant mammals, with the exception of some marsupials and bats. No description about the white-eared opossum stifle was found in the available literature up to now. Thus, the knee joints of 16 Didelphis albiventris were examined by gross anatomy, histology, radiography and computed tomography images to determine the presence or absence of ossified patella in this animal...
October 4, 2017: Anatomia, Histologia, Embryologia
Houda Nasser Al Yaqoubi, Nishat Fatema
Didelphys uterus, or double uterus, is an embryological developmental malformation of the müllerian ducts with the incidence of approximately 8.3% of all müllerian duct abnormalities (MDAs). Didelphys uterus accompanying dicavitary twin gestation is encountered as a very rare entity with overall incidence of about 1 in 1,000,000. We report a rare case of didelphys uterus, diagnosed since her first pregnancy, and during her fourth pregnancy she conceived dicavitary twin naturally without any infertility treatment...
2017: Case Reports in Obstetrics and Gynecology
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