8 research outputs found
Tibial plateau angle measuremet in dogs ā comparison of three different methods
The aim of this study was to establish two new methods for measuring the tibial plateau
angle (TPA): proximal tibial circle (PTC) as well as full tibial circle (FTC) method, and
to test their reliability in comparison to the classical method (CM). Three radiologists
implemented each method, and measurements were repeated three times.
The results of consecutive measurements obtained by two observers had excellent
reliability with an interclass correlation coefficient (ICC) greater than 0.9 for all
methods, while measurements obtained by the third observer had good reliability for
the CM (ICC=0.885) and PTC method (ICC=0.851).
The results obtained by the three observers for all methods indicate good reliability for
the PTC and FTC methods (ICC=0.848 and 0.880, respectively) and excellent reliability
for CM (ICC = 0.909); the results of the different observers for each method were not
significantly different.
The significant difference resulting from the applied measurement method (ICC =
0.447 and P<0.01) was confirmed. Statistically significant differences were not found
between the CM and PTC method (P>0.05), while differences between the PTC and
FTC, as well as CM and FTC methods, were statistically significant (P<0.01).
New methods for TPA measurements based on shorter tibial axes may be an alternative
to a method based on the full-length axis. A high correlation between the methods
indicates the precision of each of them. Newly established methods can be used when
the tarsal joint is not included in radiographs or is affected by degenerative changes,
making use of the classical method not possible
Influence of Radiation Dose in Computed Tomography on Antioxidant Enzyme Activity in Rabbit Erythrocytes
The objective of this study was to assess the radiation dose in computed tomography examinations of rabbits using different examination protocols and to correlate these values with the activity of antioxidant enzymes in their red blood cells following irradiation. The presented results revealed that a single, routine computed tomography scan exposure led to a different response of the activity of antioxidant enzymes in red blood cells regarding both dose and time. The results indicate that there is a dose threshold that is about 25 mGy. Doses below that level do not produce any significant changes in the level of antioxidant enzymes activity. On the other hand, the level just above that threshold had a significant impact on the antioxidant defence, but in a relatively short time period (2 hours after exposure), compared to the higher dose that requires a longer adaptive period
Skin and skeletal system lesions of european pond turtles (Emys orbicularis) from natural habitats
Water pollution is known to play an important role in the pathogenesis of plastron, carapace and skin diseases of turtles. In this study, a total of 150 European pond turtles (Emys orbicularis) of different age and both sexes, originating from natural habitats in Serbia, were examined for morphological changes of the skin, plastron, carapace and skeletal system. The turtles were taken out from their natural habitats in Lake Ludas, Lake Palic and Lake Tresetiste. After artificial hibernation, they were subjected to detailed examination, sampled and treated, and finally returned into their natural habitat. Biopsies from the skin and shell were subjected to histopathological examination and microbiological analysis. X-ray scanning was also performed to detect changes in the skeletal system. Macroscopic changes of the skin, most frequently degenerative, inflammatory or neoplastic diseases, were diagnosed in 49.33% of the turtles examined. Dermatitis of different origin and form was the most prominent histopathological finding (28.00%). In the plastron, inflammatory and degenerative processes were frequently found. Osteopathy and mechanical injuries were the dominant findings. Macroscopic changes of the plastron, carapace and skeletal system were diagnosed in 67.33% of the turtles examined. Using X-ray scanning, generalised osteopathy, anomalies and malformations of different aetiology were also diagnosed on the tail and legs. Microbiological examinations showed the presence of a variety of bacterial and fungal agents, either primary pathogens or potential polluters, which invaded the skin and shell, or were present in cloacal swab samples. Bacterial infection was diagnosed in 76.66% of the turtles, first of all in those with skin and shell necrosis. Mycoses were diagnosed in 33.33% of the animals
Destruction of chemical warfare surrogates using a portable atmospheric pressure plasma jet
Todayās reality is connected with mitigation of threats from the new chemical and biological warfare agents. A novel investigation of cold plasmas in contact with liquids presented in this paper demonstrated that the chemically reactive environment produced by atmospheric pressure plasma jet (APPJ) is potentially capable of rapid destruction of chemical warfare agents in a broad spectrum. The decontamination of three different chemical warfare agent surrogates dissolved in liquid is investigated by using an easily transportable APPJ. The jet is powered by a kHz signal source connected to a low-voltage DC source and with He as working gas. The detailed investigation of electrical properties is performed for various plasmas at different distances from the sample. The measurements of plasma properties in situ are supported by the optical spectrometry measurements, whereas the high performance liquid chromatography measurements before and after the treatment of aqueous solutions of Malathion, Fenitrothion and Dimethyl Methylphosphonate. These solutions are used to evaluate destruction and its efficiency for specific neural agent simulants. The particular removal rates are found to be from 56% up to 96% during 10 min treatment. The data obtained provide basis to evaluate APPJās efficiency at different operating conditions. The presented results are promising and could be improved with different operating conditions and optimization of the decontamination process
Skin and skeletal system lesions of european pond turtles (Emys orbicularis) from natural habitats
Influence of radiation dose in computed tomography on antioxidant enzyme activity in rabbit erythrocytes
The objective of this study was to assess the radiation dose in computed
tomography examinations of rabbits using different examination protocols and
to correlate these values with the activity of antioxidant enzymes in their
red blood cells following irradiation. The presented results revealed that a
single, routine computed tomography scan exposure led to a different response
of the activity of antioxidant enzymes in red blood cells regarding both dose
and time. The results indicate that there is a dose threshold that is about
25 mGy. Doses below that level do not produce any significant changes in the
level of antioxidant enzymes activity. On the other hand, the level just
above that threshold had a significant impact on the antioxidant defence, but
in a relatively short time period (2 hours after exposure), compared to the
higher dose that requires a longer adaptive period. [Project of the Serbian
Ministry of Education, Science and Technological Development, Grant no.
173014: Molecular mechanisms of redox signalling in homeostasis: adaptation
and pathology
Incidence patterns of ectodermic lesions in wild populations of Common Wall Lizard (Podarcis muralis)
Skin lesions frequently present in adult lizards may be due to a variety of causes, both physical and infectious, including excessively high humidity and environmental temperature, malnutrition, concurrent disease etc. On the other hand, skin lesions in lizards could be simple evidence of various behavioural patterns and biotic interactions. However, studies on frequencies of dermal lesions and their anatomical and environmental correlates in lacertid lizards are rare. Here, we use Podarcis muralis to analyse the relations between occurrence of ectodermal lesions and three possible indicators of environmental stress (body condition index - BCI, infestation by ticks and tail condition) by evaluating differences among local populations at uni- and multivariate level. Our results showed that BCI, together with body size and sexual size dimorphism, varied between populations but had no direct influence on the presence of lesions. Males had higher frequencies of lesions and ticks but lower frequencies of broken tails than females. All three parameters varied between sites likely due to differences in predation/parasite exposures and agonistic interactions with conspecifics between sexes and populations. Results of multivariate analyses suggested that the occurrence of lesions is decoupled from the other morphological stress indicators. Detected associations indicated that relations between presence of lesions and other analysed variables are rather complex. Directions for further research on ectodermal lesions in lacertid lizards are provided.Ministry of Education and Science of Republic of Serbia [173025]; Fundacao para a Ciencia e a Tecnologia (Portugal) [PTDC/BIA-BEC/101256/2008
The Role of Tibial Plateau Angle in Canine Cruciate Ligament RuptureāA Review of the Literature
Cranial cruciate ligament disease is a common pathological condition in dogs that is often presented in daily clinical practice. Different risk factors for the development of this condition include breed, sex, age, bodyweight and neuter status, as well as different biological and biomechanical mechanisms. In the literature, special attention has been paid to the role of the tibial plateau angle in damage to the cranial cruciate ligament. Although the disease was first described at the beginning of last century, and since then different surgical methods have been developed to treat it, its aetiology remains unclear. In this review, contemporary literature data related to the role of tibial plateau angle in canine cranial cruciate ligament rupture are presented