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https://www.readbyqxmd.com/read/30073142/avian-trichomonosis-mortality-events-in-band-tailed-pigeons-patagioenas-fasciata-in-california-during-winter-2014-2015
#1
Krysta H Rogers, Yvette A Girard, Leslie W Woods, Christine K Johnson
Avian trichomonosis is an upper digestive tract disease of birds typically caused by the protozoan parasite Trichomonas gallinae . In California (U.S.A), trichomonosis is known to cause periodic epidemics in the Pacific Coast band-tailed pigeon ( Patagioenas fasciata monolis ), a migratory upland game bird. We summarize the mortality events that occurred during winter 2014-2015 including the duration, estimated mortality, pathology, and genetic identity of infecting parasites. Increased mortality was reported from locations in 25 counties between November 2014 and June 2015...
December 2018: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/30039703/potato-peels-and-their-bioactive-glycoalkaloids-and-phenolic-compounds-inhibit-the-growth-of-pathogenic-trichomonads
#2
Mendel Friedman, Vincent Huang, Quincel Quiambao, Sabrina Noritake, Jenny Liu, Ohkun Kwon, Sirisha Chintalapati, Joseph Young, Carol E Levin, Christina Tam, Luisa W Cheng, Kirkwood M Land
Potato peel, a waste product of the potato processing industry, is high in bioactive compounds. We investigated the in vitro antitrichomonad activity of potato peel powders prepared from commercial Russet, red, purple, and fingerling varieties as well as several known potato components, alkaloids and phenolic compounds, against three pathogenic strains of trichomonads. Trichomonas vaginalis is a sexually transmitted protozoan parasite that causes the human disease trichomoniasis. Two distinct strains of the related Tritrichomonas fetus infect cattle and cats...
August 1, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/30023926/synthesis-and-preliminary-antimicrobial-analysis-of-isatin-ferrocene-and-isatin-ferrocenyl-chalcone-conjugates
#3
Amandeep Singh, Grant Fong, Jenny Liu, Yun-Hsuan Wu, Kevin Chang, William Park, Jihwan Kim, Christina Tam, Luisa W Cheng, Kirkwood M Land, Vipan Kumar
In this study, we outline the synthesis of isatin-ferrocenyl chalcone and 1 H -1,2,3-triazole-tethered isatin-ferrocene conjugates along with their antimicrobial evaluation against the human mucosal pathogen Trichomonas vaginalis . The introduction of a triazole ring among the synthesized conjugates improved the activity profiles with most of the compounds in the library, exhibiting 100% growth inhibition in a preliminary susceptibility screen at 100 μM. IC50 determination of the most potent compounds in the set revealed an inhibitory range between 2 and 13 μM...
May 31, 2018: ACS Omega
https://www.readbyqxmd.com/read/30016696/characterization-of-a-novel-endogenous-cysteine-proteinase-inhibitor-trichocystatin-3-tc-3-localized-on-the-surface-of-trichomonas-vaginalis
#4
Diana Belén Sánchez-Rodríguez, Jaime Ortega-López, Rosa Elena Cárdenas-Guerra, Gerardo Reséndiz-Cardiel, Bibiana Chávez-Munguía, Anel Lagunes-Guillen, Rossana Arroyo
Trichomonas vaginalis is a flagellated protist responsible for human trichomoniasis. T. vaginalis has three genes encoding for endogenous cysteine proteinase (CP) inhibitors, known as trichocystatin-1 through trichocystatin-3 (TC-1, TC-2, and TC-3). These inhibitors belong to the cystatin family. In this study, we characterized trichocystatin-3 (TC-3), an endogenous cysteine proteinase (CP) inhibitor of T. vaginalis. TC-3 possesses a signal peptide in the N-terminus and two putative glycosylation sites (typical of family 2, cystatins) but lacks the PW motif and cysteine residues (typical of family 1, stefins)...
September 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29929446/idiopathic-colitis-in-rhesus-macaques-is-associated-with-dysbiosis-abundant-enterochromaffin-cells-and-altered-t-cell-cytokine-expression
#5
Steven T Laing, David Merriam, Barbara C Shock, Sarah Mills, Abbie Spinner, Rachel Reader, Dennis J Hartigan-O'Connor
Idiopathic chronic diarrhea (ICD) is a common ailment affecting captive rhesus macaques ( Macaca mulatta). ICD cases are characterized by diarrhea in the absence of commonly identified diarrheal pathogens and multiple recurrences even after supportive therapy. Histologically, the disease is characterized by lymphoplasmacytic colitis. We identified 35 rhesus macaques euthanized for ICD during a 7-month period and described demographic, clinical, histologic, and immunologic commonalities. We found a trend of historic Campylobacter spp...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29922616/detection-of-pseudocyst-forms-of-trichomonas-muris-in-rodents-from-iran
#6
Zabiholah Zarei, Mehdi Mohebali, Khadijeh Khanaliha, Eshrat Beigom Kia, Afsaneh Motevalli Haghi, Zahra Heidari, Tahereh Rezaeian, Mostafa Rezaeian
Background: Trichomonas muris is one of the most common protozoa diagnosed in rodents. The trichomonads are generally described as presenting only trophozoite form while pseudocyst is another morphological form of trichomonads identified among gastrointestinal and genitourinary trichomonads. We identified and described different shapes of T. muris pseudocysts and trophozoite in stool samples were collected from rodents including Merinos persicus , Mus musculus and Cricetulus migratorius ...
May 2018: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/29914556/occurrence-of-health-compromising-protozoan-and-helminth-infections-in-tortoises-kept-as-pet-animals-in-germany
#7
Malek J Hallinger, Anja Taubert, Carlos Hermosilla, Frank Mutschmann
BACKGROUND: Exotic reptiles such as tortoises, have become increasingly common domestic pets worldwide and are known to host different gastrointestinal parasites. Some of these parasites bear zoonotic potential. In the present survey, we parasitologically examined tortoise faecal samples (n = 1005) from 19 different species held as pets in private German households and German zoological gardens. METHODS: Saline faecal smears were used to generate prevalence data for potentially health-compromising gastrointestinal parasites...
June 18, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29896525/dataset-of-cathepsin-l-like-cp-inhibition-of-naegleria-fowleri-and-acanthamoeba-castellanii-by-pptvcp4r-from-trichomonas-vaginalis
#8
Rosa E Cárdenas-Guerra, Moisés Martínez-Castillo, Jaime Ortega-López, Mineko Shibayama, Rossana Arroyo
The recombinant TvCP4 prepro region (ppTvCP4r) acts as an exogenous inhibitor of cathepsin L-like CPs from Trichomonas vaginalis (Cárdenas-Guerra et al., 2015 [1]). Here, we present the dataset of the trichomonad ppTvCP4r inhibitory effect against the CP proteolytic activities from other microorganisms, such as Naegleria fowleri and Acanthamoeba castellanii free-living amoeba. The proteolytic activity inhibition of total crude extracts (TCEs) of N. fowleri and A. castellanii was determined and recorded using a fluorogenic substrate specific for cathepsin L CPs without or with a ppTvCP4r treatment at different concentrations and pH...
June 2018: Data in Brief
https://www.readbyqxmd.com/read/29872537/-pentatrichomonas-hominis-infection-in-two-domestic-cats-with-chronic-diarrhea
#9
Bethânia Ferreira Bastos, Beatriz Brener, Mariana Alves de Figueiredo, Daniela Leles, Flavya Mendes-de-Almeida
Case series summary: Chronic diarrhea is a common and recurring problem in feline medicine. Intestinal trichomonads have been reported as causative agents of diarrhea in cats. While Pentatrichomonas hominis is considered commensal, Tritrichomonas foetus has been found to cause feline large bowel diarrhea in cats. In our report, two young cats infected with the feline leukemia virus (FeLV) and presenting with chronic diarrhea were identified as having trichomonads in their feces, based on direct examination and fecal culture...
January 2018: JFMS Open Reports
https://www.readbyqxmd.com/read/29859938/blt1-mediated-o-glcnacylation-is-required-for-nox2-dependent-migration-exocytotic-degranulation-and-il-8-release-of-human-mast-cell-induced-by-trichomonas-vaginalis-secreted-ltb-4
#10
Arim Min, Young Ah Lee, Kyeong Ah Kim, Myeong Heon Shin
Trichomonas vaginalis is a sexually-transmitted protozoan parasite that causes vaginitis and cervicitis. Although mast cell activation is important for provoking tissue inflammation during infection with parasites, information regarding the signaling mechanisms in mast cell activation and T. vaginalis infection is limited. O-linked N-acetylglucosamine (O-GlcNAc) is a post-translational modification of serine and threonine residues that functions as a critical regulator of intracellular signaling, regulated by O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA)...
June 2018: Microbes and Infection
https://www.readbyqxmd.com/read/29620469/tetratrichomonas-and-trichomonas-spp-associated-disease-in-free-ranging-common-eiders-somateria-mollissima-from-wellfleet-bay-ma-and-description-of-its1-region-genotypes
#11
C Grunenwald, I Sidor, R Mickley, C Dwyer, R Gerhold
During an outbreak of Wellfleet Bay virus (WFBV) in common eiders ( Somateria mollissima) from the Cape Cod region of Massachusetts, several birds were diagnosed with trichomonosis consisting of multiple trichomonad species. Six birds were examined, with trichomonads found in ceca in four birds and associated typhlitis in three of these four birds. PCR and DNA sequencing utilizing trichomonad-specific primers targeting the ITS1 region of the ribosomal DNA (rDNA) revealed the presence of Tetratrichomonas gallinarum in the gastrointestinal tracts of five birds and Trichomonas spp...
March 2018: Avian Diseases
https://www.readbyqxmd.com/read/29608771/aberrant-and-accidental-trichomonad-flagellate-infections-rare-or-underdiagnosed
#12
Chaoqun Yao, Jennifer K Ketzis
The clinical significance and frequency of human infections with trichomonad flagellates in aberrant locations (locations other than the predilection sites) and accidental infections (infections with non-human trichomonads) are unclear. The total number of case reports in the literature is low, with the identification of the infection largely the outcome of investigations for the cause of clinical signs. At least seven species have been identified in either aberrant or accidental infections, with these infections occurring worldwide...
February 1, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29516214/proteomic-profile-approach-of-effect-of-putrescine-depletion-over-trichomonas-vaginalis
#13
María Elizbeth Alvarez-Sánchez, Laura Itzel Quintas-Granados, Laura Isabel Vázquez-Carrillo, Jonathan Puente-Rivera, Alma Villalobos-Osnaya, María Dolores Ponce-Regalado, Minerva Camacho-Nuez
Infection with Trichomonas vaginalis produces a malodorous seropurulent vaginal discharge due to several chemicals, including polyamines. The presence of 1,4-diamino-2-butanone (DAB) reduces the amount of intracellular putrescine by 90%, preventing the cotransport of exogenous spermine. DAB-treated parasites present morphological changes, which are restored by adding exogenous putrescine into the culture medium. However, the effect of polyamines over the trichomonad proteomic profile is unknown. In this study, we used a proteomic approach to analyze the polyamine-depletion and restoration effect by exogenous putrescine on T...
May 2018: Parasitology Research
https://www.readbyqxmd.com/read/29198954/metabolic-reprogramming-of-hydrogenosomal-amino-acids-in-trichomonas-vaginalis-under-glucose-restriction
#14
Kuo-Yang Huang, Seow-Chin Ong, Chih-Ching Wu, Chia-Wei Hsu, Hsin-Chung Lin, Yi-Kai Fang, Wei-Hung Cheng, Po-Jung Huang, Cheng-Hsun Chiu, Petrus Tang
BACKGROUND: Glucose is the major energy source that is converted to pyruvate for ATP generation in the trichomonad hydrogenosome. Under glucose restriction (GR), the regulation of amino acids metabolism is crucial for trichomonad growth and survival. RNA-sequencing (RNA-seq) analysis has been used to identify differentially expressed genes in Trichomonas vaginalis under GR, leading to significant advances in understanding adaptive responses of amino acid metabolism to GR. However, the levels of amino acid metabolites modulated by GR are unknown in T...
November 21, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/29150700/prevalence-of-intestinal-parasites-in-companion-dogs-with-diarrhea-in-beijing-china-and-genetic-characteristics-of-giardia-and-cryptosporidium-species
#15
Zhongjia Yu, Yang Ruan, Mengjie Zhou, Siyuan Chen, Yinxin Zhang, Liya Wang, Guan Zhu, Yonglan Yu
Companion animals including dogs are one of the important components in One Health. Parasites may cause not only diseases in pet animals but also many zoonotic diseases infecting humans. In this study, we performed a survey of intestinal parasites in fecal specimens (n = 485) collected from outpatient pet dogs with diarrhea in Beijing, China, for the entire year of 2015 by microscopic examination (all parasites) and SSU rRNA-based nested PCR detection (Giardia and Cryptosporidium). We observed a total of 124 (25...
January 2018: Parasitology Research
https://www.readbyqxmd.com/read/28957005/systemic-histomoniasis-in-a-leucistic-indian-peafowl-pavo-cristatus-from-southern-brazil
#16
Mariana de Mello Zanim Michelazzo, João Pedro Sasse, Marielen de Souza, Victor Hugo Brunaldi Marutani, Ana Angelita Sampaio Baptista, João Luis Garcia, Amauri Alcindo Alfieri, Selwyn Arlington Headley
The pathological and molecular findings associated with Histomonas meleagridis are described in a leucistic Indian peafowl (Pavo cristatus) from Southern Brazil. The most significant gross findings were multifocal necrotizing hepatitis and diphtheric typhlitis. Histopathologic evaluation of the liver, ceca, kidney, spleen, and small intestine revealed systemic histomoniasis (SH) associated with intralesional and intravascular accumulations of histomonad organisms consistent with H. meleagridis. PCR was used to amplify the DNA of H...
September 2017: Avian Diseases
https://www.readbyqxmd.com/read/28956991/persistence-of-trichomonas-gallinae-in-birdseed
#17
Scott McBurney, Whitney K Kelly-Clark, María J Forzán, Raphaël Vanderstichel, Kevin Teather, Spencer J Greenwood
Trichomonas gallinae has emerged worldwide as a cause of mortality in songbirds (passerines). The congregation of numerous birds, including the reservoir hosts, pigeons and doves (columbids), at backyard feeding and watering sources has been suggested as a potential driver for the outbreaks. Evidence supporting a role for water in transmission has been established, but the role of birdseed in the transmission of trichomoniasis remained to be investigated. We assessed the survival of T. gallinae in three commercial birdseeds (mixed seed, black-oil sunflower seed, and niger seed) routinely used to attract passerine birds to local properties...
September 2017: Avian Diseases
https://www.readbyqxmd.com/read/28950916/%C3%AE-carboxymuconolactone-decarboxylase-a-novel-cell-cycle-related-basal-body-protein-in-the-early-branching-eukaryote-trichomonas-vaginalis
#18
Wei-Hung Cheng, Kuo-Yang Huang, Po-Jung Huang, Chi-Ching Lee, Yuan-Ming Yeh, Fu-Man Ku, Rose Lin, Mei-Ling Cheng, Cheng-Hsun Chiu, Petrus Tang
BACKGROUND: γ-Carboxymuconolactone decarboxylase (CMD) participates in the β-ketoadipate pathway, which catalyzes aromatic compounds to produce acetyl- or succinyl-CoA, in prokaryotes and yeast. Our previous study demonstrated that expression of a CMD homologue that contains two signatures (dualCMD) is negatively regulated by iron in Trichomonas vaginalis. However, we were not able to identify the components of the β-ketoadipate pathway in the parasite's genome. These observations prompted us to investigate the biological functions of this novel CMD homologue in T...
September 26, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28935536/the-effect-of-iron-on-metronidazole-activity-against-trichomonas-vaginalis-in%C3%A2-vitro
#19
Hala Salah Elwakil, Rania Ayman Tawfik, Yosra Hussein Alam-Eldin, Doaa Ashraf Nassar
Metronidazole is administered in an inactive form then activated to its cytotoxic form within the hydrogenosome of trichomonads. Two hydrogenosomal proteins, pyruvate ferredoxin oxidoreductase (PFOR) and ferredoxin, play a critical role in the reductive activation of metronidazole. The expression of these proteins and other hydrogenosomal proteins are likewise positively regulated by iron. In the present study, the effect of iron on minimal lethal concentration (MLC) of metronidazole on in vitro cultured Trichomonas vaginalis(T...
November 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28917301/cysteine-protease-30-cp30-contributes-to-adhesion-and-cytopathogenicity-in-feline-tritrichomonas-foetus
#20
Emily N Gould, Richard Giannone, Stephen A Kania, M Katherine Tolbert
Tritrichomonas foetus (T. foetus) is a flagellated protozoan parasite that is recognized as a significant cause of diarrhea in domestic cats with a prevalence rate as high as 30%. No drugs have been shown to consistently eliminate T. foetus infection in all cats. Cysteine proteases (CPs) have been identified as mediators of T. foetus-induced adhesion-dependent cytotoxicity to the intestinal epithelium. These CPs represent novel targets for the treatment of feline trichomonosis. However, cats also produce CPs that are part of life-critical systems...
September 15, 2017: Veterinary Parasitology
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