Genomska tipizacija i filogenetska analiza izolata pasjeg parvovirusa izdvojenih u državi Odisha u Indiji.

Canine parvovirus type 2 (CPV-2) comprises three major antigenic variants CPV-2a, CPV-2b and CPV-2c. Their mutated variants in geographically distinct locations need to be investigated to understand viral evolution and for development of effective management measures. In the present study, 71 faecal and 12 blood samples from suspected dogs in the state of Odisha, India were analyzed by PCR. Faecal lysate, extracted by the fast boiling method was found to be more sensitive as a template for PCR compared to DNA extracted from faecal samples by the phenol-chloroform method. The results revealed 29 positive cases (583 bp amplicon) out of 71 faecal samples, and 5 positive cases out of 12 blood samples examined, with a few variations in the results from blood and faecal samples in the same cases, thus suggesting the necessity of screening both blood and faecal samples for diagnosis. Restriction digestion of the 583 bp PCR amplicon with MboII (PCR-RFLP) confirmed the strain not to be CPV-2c. Further sequencing of the 583 bp fragments recognized the variant as one of the mutated CPV-2a strain. Interestingly, an additional presence of CPV-2a mutant of 525 bp was observed in eleven of the positive faecal samples, along with the 583 bp fragment in PCR that needs further characterization. These two CPV-2a variants shared a common clade with other CPV-2a variants in the phylogenetic tree separating CPV-2b and CPV-2c. Our results confirm the dynamic changes in CPV variants and emphasize the importance of CPV surveillance for understanding of viral epidemiology.Pasji parvovirus tip 2 (PPV-2) ima tri glavne antigenske varijante: PPV-2a, PPV-2b i PPV-2c. Radi razumijevanja njegove evolucije i razvijanja učinkovitih mjera suzbijanja potrebno je istražiti njegove mutante iz različitih geografskih područja. U ovom je radu lančanom reakcijom polimerazom bio pretražen 71 uzorak fecesa i 12 uzoraka krvi pasa sa sumnjom na parvovirusnu infekciju u državi Odisha u Indiji. Postupak dobivanja fekalnog lizata brzim ključanjem pri 100 °C pokazao se osjetljivijim u odnosu na ekstrakciju DNA iz uzoraka fecesa fenol-kloroformom. Rezultati su pokazali da je od 71 pretraženog uzorka fecesa 29 bilo pozitivnih (583 bp umnožak), a od 12 pretraženih uzoraka krvi sedam pozitivnih s različitim nalazima kod istih slučajeva, što govori da je za postavljanje dijagnoze potrebno pretražiti oba uzorka od iste životinje. Cijepanje odsječka 583 bp restrikcijskim enzimom MboII (PCR-RFLP) pokazalo je da izdvojeni soj ne pripada PPV-2c. Daljnjim sekvencioniranjem fragmenata od 583 bp pokazalo se da izolat pripada mutiranoj varijanti PPV-2a. Zanimljivo je da je u 11 pozitivnih uzoraka fecesa usporedno s fragmentima od 583 bp bila dokazana i prisutnost mutanta PPV-2a s fragmentom od 525 bp što iziskuje daljnju karakterizaciju. Te dvije varijante PPV-2a svrstane su u zajedničku skupinu u filogenetskom stablu, različitu od PPV-2b i PPV-2c. Naši rezultati potvrđuju dinamiku promjena varijanata PPV s naglaskom na važnost istraživanja za razumijevanje njegove epizootiologije

Evaluation of geriatric changes in dogs

Aim: The present study has been envisaged to ascertain the old age for critical management of geriatric dogs considering the parameters of externally visible changes, haemato-biochemical alterations and urine analysis in geriatric dogs approaching senility. Materials and Methods: The study was undertaken in the Department of Veterinary Pathology in collaboration with Teaching Veterinary Clinic complex spanning a period of 1 year. For screening of geriatric dogs, standard geriatric age chart of different breeds was followed. The external characteristics such as hair coat texture, dental wear and tear, skin texture and glaucoma were taken as a marker of old age. Haematology, serum biochemistry and urine analysis were also included in the study. Results: External visible changes like greying of hair, dull appearance of hair coat, glaucoma, osteoarthritis, dental wear and tear were commonly encountered in the aged dogs. The haemoglobin, total erythrocyte count and packed cell volume showed a decreasing trend in the geriatric groups. Biochemical values like total protein, albumin, calcium level showed a decreasing trend while urea level with an increasing trend in geriatric dogs without any much alteration in serum glutamicoxaloacetic transaminse, serum glutamic-pyruvate transaminase, cholesterol and creatinine. Physical examination of urine revealed yellow, amber, red, deep red color with turbidity and higher specific gravity. Chemical examination revealed presence of protein, glucose, ketone bodies, blood and bilirubin on some cases. The culture and sensitivity test of the urine samples revealed presence of bacteria with sensitive and resistance to some antibiotics. Conclusion: External visible changes are still the golden standard of determining the old age in dogs. Haemato-biochemical evaluation can be useful for correlating with the pathophysiological status of the animal. Biochemical analysis of urine can be employed rightly as kidney dysfunction is being major geriatric problem. Anaemia, jaundice, nephritis, hepatitis are the most common findings considered during old age