dog-human relationship Dotaz Zobrazit nápovědu
Dog. Specifically created to save its master's life. - (The dog is the ideal) Friend of man, (because it is his devoted slave) (source: Gustave Flaubert, Dictionnaire des Idées Reçues). But is man the best friend of the dog? This question is legitimate when we consider living situations to which modern domestic dogs are exposed. They often do not satisfy basic animal needs. In this narrative review, the author revisits the history of the dog's presence alongside humans, in the light of current knowledge. The modern dog (breed standards and their interests in canine research) and its breeding strategy, including extreme breeding, will then be given particular attention. Dysfunctional human psychological processes will be explored to make it possible to grasp why the breeding of the modern dog is undergoing such a transformation. Finally, based on these factual and conceptual insights, suggestions to improve canine welfare will be proposed. To be effective, all these must be assessed against real-world conditions.
- Klíčová slova
- canine welfare, dog-human relationship, genetic defect, selective breeding,
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
INTRODUCTION: The microbiological aspect of a relationship between pets (dogs/cats) and their owners is mainly concerned with the incidence of the shared fungal species that can be potential pathogens. Since sharing homes with pets is very popular in the Czech Republic, there is an increased possibility of communication between microbiota of the two macroorganisms (the pet and the owner). The aim of the study was to determine, based on the close relationship between pets and humans, the biodiversity of shared fungi, also with respect to previous antimicrobial therapy. METHODS: A total of 103 samples were collected from 20 pairs (20 owners, 16 dogs and 4 cats). All owners completed a questionnaire with their pets' veterinarians. In owners, swabs were collected from the nasal mucosa, armpit and interdigital spaces of the foot. In pets, swabs were obtained from the external auditory meatus and nasal mucosa. In individuals with skin lesions, samples were also collected from the affected areas. Fungal species were identified by culture and microscopy methods and confirmed by matrix-assisted laser desorption/ionization - time of flight (MALDI-TOF) mass spectrometry. Statistical methods were used to correlate the closeness of relationship with the number of shared fungal species and to correlate previous antimicrobial therapy with the number of shared species of microscopic fungi. RESULTS: Analysis of the questionnaire found that 65 % of owners who participated in the study kept more pets at home than only the tested one. In the previous year, 5 % of pets and 5 % of owners received antimicrobial therapy. As many as 45 % of dogs or cats slept in their owners' beds and 80 % rested on a sofa together with their owners. Also, 45 % of owners had their faces licked by pets. Eighty percent of pets were fed with several types of food (dry food and cooked food). Further, 70 % of pets lived permanently with their owners in the same household. A total of 45 microscopic fungi species were isolated, of which 15 species occurred in both macroorganisms (pets and humans). Thirty-two species were identified from human and 28 species from animal samples. The most frequent species was the yeast Candida albicans, isolated from 30 samples. From the human nasal mucosa, only four species were isolated. The richest biodiversity was observed in interdigital space samples (26 fungal species). Once again, the most frequent fungal species was C. albicans (8 cases). The most numerous animal samples were obtained from the external auditory meatus. There, the most frequent species was Malassezia pachydermatis (17 cases). In seven pairs, microscopic fungi were shared. Of those, two pairs shared two spe-cies and five pairs shared one species. A total of five fungal species were shared, most often the yeasts C. albicans and Geotrichum candidum. CONCLUSION: The closeness of the human-pet relationship apparently does not influence the number of shared fungal species. The yeast Candida albicans was most frequently isolated from owners as well as from the nasal mucosa in pets. The lipophilic yeast M. pachydermatis most commonly occurred in the material from the external auditory meatus and skin scales from dogs and cats.
- MeSH
- domácí zvířata mikrobiologie MeSH
- houby izolace a purifikace MeSH
- kočky MeSH
- kůže MeSH
- lidé MeSH
- mykózy epidemiologie etiologie mikrobiologie MeSH
- nemoci koček epidemiologie mikrobiologie přenos MeSH
- nemoci psů epidemiologie mikrobiologie přenos MeSH
- nosní sliznice MeSH
- průzkumy a dotazníky MeSH
- psi MeSH
- zoonózy epidemiologie mikrobiologie MeSH
- zvířata MeSH
- Check Tag
- kočky MeSH
- lidé MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika epidemiologie MeSH
- MeSH
- absorpce MeSH
- aminofylin aplikace a dávkování MeSH
- diuretika aplikace a dávkování MeSH
- diuréza účinky léků MeSH
- dospělí MeSH
- furosemid aplikace a dávkování MeSH
- hodnoty glomerulární filtrace * MeSH
- kyselina ethakrynová aplikace a dávkování MeSH
- ledvinové kanálky metabolismus MeSH
- ledviny účinky léků MeSH
- lidé středního věku MeSH
- lidé MeSH
- voda metabolismus MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- aminofylin MeSH
- diuretika MeSH
- furosemid MeSH
- kyselina ethakrynová MeSH
- voda MeSH
The cat flea (Ctenocephalides felis) is the most common parasite of domestic cats and dogs worldwide. Due to the morphological ambiguity of C. felis and a lack of - particularly largescale - phylogenetic data, we do not know whether global C. felis populations are morphologically and genetically conserved, or whether human-mediated migration of domestic cats and dogs has resulted in homogenous global populations. To determine the ancestral origin of the species and to understand the level of global pervasion of the cat flea and related taxa, our study aimed to document the distribution and phylogenetic relationships of Ctenocephalides fleas found on cats and dogs worldwide. We investigated the potential drivers behind the establishment of regional cat flea populations using a global collection of fleas from cats and dogs across six continents. We morphologically and molecularly evaluated six out of the 14 known taxa comprising genus Ctenocephalides, including the four original C. felis subspecies (Ctenocephalides felis felis, Ctenocephalides felis strongylus, Ctenocephalides felis orientis and Ctenocephalides felis damarensis), the cosmopolitan species Ctenocephalides canis and the African species Ctenocephalides connatus. We confirm the ubiquity of the cat flea, representing 85% of all fleas collected (4357/5123). Using a multigene approach combining two mitochondrial (cox1 and cox2) and two nuclear (Histone H3 and EF-1α) gene markers, as well as a cox1 survey of 516 fleas across 56 countries, we demonstrate out-of-Africa origins for the genus Ctenocephalides and high levels of genetic diversity within C. felis. We define four bioclimatically limited C. felis clusters (Temperate, Tropical I, Tropical II and African) using maximum entropy modelling. This study defines the global distribution, African origin and phylogenetic relationships of global Ctenocephalides fleas, whilst resolving the taxonomy of the C. felis subspecies and related taxa. We show that humans have inadvertently precipitated the expansion of C. felis throughout the world, promoting diverse population structure and bioclimatic plasticity. By demonstrating the link between the global cat flea communities and their affinity for specific bioclimatic niches, we reveal the drivers behind the establishment and success of the cat flea as a global parasite.
- Klíčová slova
- Cat, Ctenocephalides felis, DNA barcoding, Dog, Niche modelling, Phylogeography, Siphonaptera,
- MeSH
- Ctenocephalides klasifikace genetika růst a vývoj MeSH
- fylogeneze MeSH
- genetické markery MeSH
- infestace blechami parazitologie veterinární MeSH
- kočky MeSH
- lidé MeSH
- nemoci koček parazitologie MeSH
- nemoci psů parazitologie MeSH
- psi MeSH
- zvířata MeSH
- Check Tag
- kočky MeSH
- lidé MeSH
- mužské pohlaví MeSH
- psi MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Afrika MeSH
- Názvy látek
- genetické markery MeSH
INTRODUCTION: The microbiological aspect of a relationship between pets (dogs/cats) and their owners is mainly concerned with the incidence of shared bacterial species, in particular potential pathogens. Given the great popularity of sharing homes with pets (dogs/cats) in the Czech Republic, there is an increased possibility of communication between microbiota of the two macroorganisms (pet and owner). The aim of the study was to determine the biodiversity of shared bacteria and possibility of exchange of genes of resistance to antimicrobial agents between potential pathogens based on the close relationship between pets and humans. METHODS: A total of 103 samples were collected from 20 pairs (20 owners, 16 dogs and 4 cats). All owners completed a questionnaire with their pets' veterinarians. In owners, swabs were collected from the nasal mucosa, armpit and interdigital spaces of the foot. In pets, swabs were obtained from the external auditory meatus and nasal mucosa. In individuals with skin lesions, samples were also collected from the affected areas. Bacterial species were identified by culture and matrix-assisted laser desorption/ionization - time of flight (MALDI-TOF) mass spectrometry. In shared species, susceptibility to antibiotics was tested by the disk diffusion method. Statistical methods were used to correlate the closeness of relationship with the number of shared bacterial species and to correlate previous antimicrobial therapy with shared resistance of the common bacteria. RESULTS: Analysis of the questionnaires showed that 65 % of owners who participated in the study kept more pets at home than only the tested one. In the previous year, 5 % of pets and 5 % of owners received antimicrobial therapy. As many as 45 % of dogs or cats slept in their owners' beds and 80 % rested on a sofa together with their owners. Also, 45 % owners had their faces licked by pets. Eighty percent of pets were fed with several types of food (dry food and cooked food). Further, 70 % of pets lived permanently with their owners in the same household. A total of 76 bacterial species of 33 genera were identified. The most frequently isolated species (29 samples) was S. intermedius. Seventeen bacterial species occurring in both humans and animals were found and identified. At least one bacterial species was shared by 11 pairs and two shared species were found in two pairs. The shared species were S. intermedius, E. coli, E. faecalis, A. lwoffii, P. putida and S. aureus. Antimicrobial susceptibility was tested in the shared species. Common antimicrobial resistance was found in four pairs. In one pair, shared E. faecalis showed identical resistance to co-trimoxazole; in another pair, S. intermedius was resistant to gentamycin, erythromycin, clindamycin and co-trimoxazole. The third resistant bacterial species was E. coli; in one pair, it showed borderline resistance to colistin; in the second case, it was fully resistant to this antimicrobial agent. The other pairs with shared bacteria did not show any common resistance. CONCLUSION: The study results showed that there was an association between closeness of the human-pet relationship and the prevalence of shared bacterial species. Pairs with a close relationship were 37.5 % more likely to share bacteria than pairs with a less close relationship. The study suggests that antimicrobial therapy in at least one pair member may increase the risk of shared bacterial resistance.
- MeSH
- Bacteria izolace a purifikace MeSH
- domácí zvířata mikrobiologie MeSH
- kočky mikrobiologie MeSH
- kůže mikrobiologie MeSH
- lidé MeSH
- nosní sliznice mikrobiologie MeSH
- průzkumy a dotazníky MeSH
- psi mikrobiologie MeSH
- sběr dat MeSH
- zvířata MeSH
- Check Tag
- kočky mikrobiologie MeSH
- lidé MeSH
- psi mikrobiologie MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
Tacrine is a classic drug whose efficacy against neurodegenerative diseases is still shrouded in mystery. It seems that besides its inhibitory effect on cholinesterases, the clinical benefit is co-determined by NMDAR-antagonizing activity. Our previous data showed that the direct inhibitory effect of tacrine, as well as its 7-methoxy derivative (7-MEOTA), is ensured via a "foot-in-the-door" open-channel blockage, and that interestingly both tacrine and 7-MEOTA are slightly more potent at the GluN1/GluN2A receptors when compared with the GluN1/GluN2B receptors. Here, we report that in a series of 30 novel tacrine derivatives, designed for assessment of structure-activity relationship, blocking efficacy differs among different compounds and receptors using electrophysiology with HEK293 cells expressing the defined types of NMDARs. Selected compounds (4 and 5) potently inhibited both GluN1/GluN2A and GluN1/GluN2B receptors; other compounds (7 and 23) more effectively inhibited the GluN1/GluN2B receptors; or the GluN1/GluN2A receptors (21 and 28). QSAR study revealed statistically significant model for the data obtained for inhibition of GluN1/Glu2B at -60 mV expressed as IC50 values, and for relative inhibition of GluN1/Glu2A at +40 mV caused by a concentration of 100 μM. The models can be utilized for a ligand-based virtual screening to detect potential candidates for inhibition of GluN1/Glu2A and/or GluN1/Glu2B subtypes. Using in vivo experiments in rats we observed that unlike MK-801, the tested novel compounds did not induce hyperlocomotion in open field, and also did not impair prepulse inhibition of startle response, suggesting minimal induction of psychotomimetic side effects. We conclude that tacrine derivatives are promising compounds since they are centrally available subtype-specific inhibitors of the NMDARs without detrimental behavioral side-effects.
- Klíčová slova
- Acetylcholinesterase, Electrophysiology, Glutamate receptor, Ion channel, Pharmacology, QSAR, Tacrine, in vivo,
- MeSH
- acetylcholinesterasa chemie genetika metabolismus MeSH
- butyrylcholinesterasa chemie metabolismus MeSH
- cholinesterasové inhibitory chemie metabolismus farmakologie MeSH
- hematoencefalická bariéra účinky léků metabolismus MeSH
- krysa rodu Rattus MeSH
- kvantitativní vztahy mezi strukturou a aktivitou MeSH
- lidé MeSH
- lokomoce účinky léků MeSH
- membránové potenciály účinky léků MeSH
- myši inbrední ICR MeSH
- myši MeSH
- poločas MeSH
- potkani Wistar MeSH
- psi MeSH
- racionální návrh léčiv MeSH
- receptory N-methyl-D-aspartátu antagonisté a inhibitory genetika metabolismus MeSH
- rekombinantní proteiny biosyntéza chemie MeSH
- takrin chemie metabolismus farmakologie MeSH
- zvířata MeSH
- Check Tag
- krysa rodu Rattus MeSH
- lidé MeSH
- mužské pohlaví MeSH
- myši MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- acetylcholinesterasa MeSH
- butyrylcholinesterasa MeSH
- cholinesterasové inhibitory MeSH
- receptory N-methyl-D-aspartátu MeSH
- rekombinantní proteiny MeSH
- takrin MeSH
Trichomonads are known to inhabit the oral cavities of various mammals, including dogs, cats and horses. However, little attention has been paid to species identification, prevalence and zoonotic potential of these parasites, although their hosts live in close proximity with humans. According to the original description, oral trichomonads in dogs and cats belong to the genus Tetratrichomonas. Interestingly, later investigations suggested that the oral cavities of dogs and cats could be infected with different species of the genus Trichomonas, including the human oral cavity parasite Trichomonas tenax. Thus, in this study we investigated the occurrence of oral trichomonads in 111 domestic dogs and 122 cats using cell cultivation methods, nested PCR analyses, and the sequencing of ITS1-5.8rRNA-ITS2 regions. We found that both dogs and cats harbour T. tenax, with prevalences of 8.1% and 4.1%, respectively. Considerably more dogs were infected with different species of the genus Trichomonas (30.6%), which we also identified in cats (6.6%). An analysis of the potential risk factors suggested that dogs of more than 3years old or with dental disease signs are more frequently infected with Trichomonas sp. than younger dogs or dogs without the disease signs, and that crossbreed dogs revealed increased rates of infection in comparison with purebred dogs. An analysis of the cat population suggested that Trichomonas sp. infection is lower in younger and crossbreed cats. Although the morphology of Trichomonas sp. is very similar to that of T. tenax, based on a phylogenetic analysis of ITS1-5.8rRNA-ITS2 regions and the ssrRNA genes, we consider Trichomonas sp. to represent a new trichomonad species, for which we propose the name Trichomonas brixi.
- Klíčová slova
- Cat, Dog, Trichomonas brixi, Trichomonas tenax, Zoonotic potential,
- MeSH
- fylogeneze MeSH
- kočky MeSH
- koně MeSH
- lidé MeSH
- nemoci koček epidemiologie parazitologie MeSH
- nemoci koní parazitologie MeSH
- nemoci psů epidemiologie parazitologie MeSH
- prevalence MeSH
- protozoální DNA genetika MeSH
- psi MeSH
- RNA protozoální genetika MeSH
- sekvence nukleotidů MeSH
- Trichomonas klasifikace cytologie izolace a purifikace MeSH
- trichomoniáza epidemiologie parazitologie veterinární MeSH
- ústa parazitologie MeSH
- zoonózy epidemiologie parazitologie MeSH
- zvířata MeSH
- Check Tag
- kočky MeSH
- lidé MeSH
- mužské pohlaví MeSH
- psi MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika epidemiologie MeSH
- Názvy látek
- protozoální DNA MeSH
- RNA protozoální MeSH
A method for the determination of blood platelet aggregability as the function of ADP concentration is described. Individual platelet aggregability was characterised by means of parameters of the sigmoidal relationship between the dose of the aggregating reagent and the aggregation curve amplitude. The method was applied to establish ADP-induced aggregability of various mammalian species. The aggregation curves of rabbit and rat platelets reached significantly lower maximum amplitudes than those of human and dog platelets. The eman concentration of ADP was significantly higher in dog platelets and the slope of the dose-response curve was significantly steeper in rat platelets compared to the other species studied. Some of the causes of individual intra-species ADP-induced aggregation variability revealed by means of dose-response aggregometry are discussed.
- MeSH
- agregace trombocytů fyziologie MeSH
- druhová specificita MeSH
- inbrední kmeny potkanů MeSH
- králíci MeSH
- krysa rodu Rattus MeSH
- lidé MeSH
- psi MeSH
- reprodukovatelnost výsledků MeSH
- vyšetření funkce trombocytů metody MeSH
- zvířata MeSH
- Check Tag
- králíci MeSH
- krysa rodu Rattus MeSH
- lidé MeSH
- mužské pohlaví MeSH
- psi MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- srovnávací studie MeSH
Subcutaneous dirofilariosis is a fast-spreading infection of dogs, and occasionally of other carnivores and humans. Several factors contribute to its spread, including climate change, which facilitates development and survival of Dirofilaria repens in the mosquito vector. Movement/relocation of infected definitive hosts (dogs) from endemic regions to non-endemic regions is another possible cause of local emergence and the presence of a wide variety of wild reservoirs of the parasite may also contribute to its spread. The main aim of this study was to evaluate the genetic diversity of D. repens from different regions of Europe and to evaluate the spread of identified haplotypes and their geographic origin. A total of 95 D. repens isolates were obtained from Central and Eastern Europe (Poland, Belarus, Ukraine, Austria, Romania), NE Europe (Lithuania, Latvia, Estonia), Italy and Israel. All but two positive samples were obtained from the blood of dogs while one positive sample was obtained from an adult worm from a human case from the Lublin area in SE Poland and one sample was obtained from Anopheles plumbeus mosquito from Austria. Genetic diversity in D. repens isolates was evaluated by PCR amplification and sequencing of three genetic markers, including two mitochondrial genes (mtDNA): the cytochrome c oxidase subunit I (COI) and dehydrogenase subunit I (NADH). Additionally, the genomic marker, internal transcribed spacer 1 (ITS-1) was amplified and sequenced. Haplotypes were differentiated based on sequence alignments by identifying Single Nucleotide Polymorphism (SNPs) using DnaSP and Mega X. PopArt was used to construct a haplotype network including all identified haplotypes. Both mtDNA sequences (COI and NADH) were combined together for phylogenetic and network analyses. Altogether 18 haplotypes (DR1-DR18) were identified in combined mtDNA markers among 95 analysed samples. Haplotype DR1 was the most common encompassing 66 isolates: 42 isolates from Poland (41 from dogs and one from a human), 13 from Lithuania, 4 from Latvia, 2 from Ukraine and 5 from Romania. All other haplotypes grouped around haplotype DR1 separated by 1-5 SNPs, forming a star-like shape. Haplotype DR2 was the second most common haplotype, formed by six isolates from Romania. Interestingly, haplotype DR3 was represented only by four isolates from Israel. The remaining 15 haplotypes were represented by 1-4 isolates of different origins. Our study showed that only minor genetic diversity was found in D. repens since all isolates appear to have clustered in or branched out from haplotype DR1 with 1-5 SNP differences. The genetic diversity appears to be governed by geographic origin since isolates from neighbouring populations (countries) appear to share unique haplotypes while other populations that are geographically distant from individual haplotypes.
- Klíčová slova
- COI, Dirofilaria repens, Haplotype, ITS-1, NADH,
- MeSH
- Dirofilaria repens * genetika MeSH
- dirofilarióza * epidemiologie parazitologie MeSH
- fylogeneze MeSH
- genetická variace MeSH
- haplotypy MeSH
- lidé MeSH
- NAD genetika MeSH
- nemoci psů * epidemiologie parazitologie MeSH
- paraziti * MeSH
- psi MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Evropa epidemiologie MeSH
- Polsko epidemiologie MeSH
- Střední východ MeSH
- Názvy látek
- NAD MeSH
Pathogens from the Trichophyton benhamiae complex are one of the most important causes of animal mycoses with significant zoonotic potential. In light of the recently revised taxonomy of this complex, we retrospectively identified 38 Trichophyton isolates that could not be resolved into any of the existing species. These strains were isolated from Iranian and Czech patients during molecular epidemiological surveys on dermatophytosis and were predominantly associated with highly inflammatory tinea corporis cases, suggesting possible zoonotic etiology. Subsequent phylogenetic (4 markers), population genetic (10 markers), and phenotypic analyses supported recognition of two novel species. The first species, Trichophyton persicum sp. nov., was identified in 36 cases of human dermatophytosis and one case of feline dermatophytosis, mainly in Southern and Western Iran. The second species, Trichophyton spiraliforme sp. nov., is only known from a single case of tinea corporis in a Czech patient who probably contracted the infection from a dog. Although the zoonotic sources of infections summarized in this study are very likely, little is known about the host spectrum of these pathogens. Awareness of these new pathogens among clinicians should refine our knowledge about their poorly explored geographic distribution. IMPORTANCE In this study, we describe two novel agents of dermatophytosis and summarize the clinical manifestation of infections. These new pathogens were discovered thanks to long-term molecular epidemiological studies conducted in Czechia and Iran. Zoonotic origins of the human infections are highly probable, but the animal hosts of these pathogens are poorly known. Further research is needed to refine our knowledge about these new dermatophytes.
- Klíčová slova
- Trichophyton benhamiae complex, dermatophytosis, molecular epidemiology, multigene phylogeny, skin mycoses, zoonotic infections, zoophilic dermatophytes,
- MeSH
- dítě MeSH
- dospělí MeSH
- fylogeneze MeSH
- kočky MeSH
- lidé středního věku MeSH
- lidé MeSH
- mikrosatelitní repetice genetika MeSH
- mladiství MeSH
- mladý dospělý MeSH
- nemoci koček mikrobiologie přenos MeSH
- nemoci psů mikrobiologie přenos MeSH
- nemoci skotu mikrobiologie přenos MeSH
- předškolní dítě MeSH
- psi MeSH
- retrospektivní studie MeSH
- senioři MeSH
- skot MeSH
- tinea epidemiologie mikrobiologie přenos MeSH
- Trichophyton klasifikace genetika izolace a purifikace MeSH
- zoonózy mikrobiologie přenos MeSH
- zvířata MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- kočky MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- psi MeSH
- senioři MeSH
- skot MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika epidemiologie MeSH
- Írán epidemiologie MeSH