Flying foxes belonging to the genus Pteropus are known to be reservoirs of zoonotic viruses. In this study, we describe the isolation of Pteropine orthoreovirus (PRV) from rectal swab samples of Pteropus vampyrus in Indonesia. PRV is an emerging zoonotic respiratory virus that can be transmitted from bats to humans. Rectal swabs (n = 91) were screened by PCR for PRV and 10 (11%) were positive. Phylogenetic analysis based on nucleotide sequences indicated that the S2, S3, S4, M3, L2, and L3 segments of one isolate (Garut-69) were closely related to previously isolated strains in Indonesia. The remaining gene segments showed both similarity and genetic divergence with other PRV strains, suggesting that re-assortment events had occurred. This is the first report of PRV infection to P. vampyrus in West Java, Indonesia.
Haematological profile is important to determine the physiological condition of an individual, and morphology of red blood cells can also be helpful in making a diagnosis of a disease. The size of red blood cells affects the ability of red blood cells to carry oxygen. In some clinical events shape and size of red blood cells will be changed. Bats are the only mammals that have the ability to fly. The ability of bats to fly would require bats to be able to bind more oxygen, therefor bat should have enough of energy while flying. The present study was conducted on 12 Cynopterus tithaecheilus (7 males and 5 females) to study about haematological profile. Blood samples were taken using tuberculin needle and analyzed by hematology analyzer for hematological value. Size of red blood cells was taken using bloods smear and analyzed by imageJ software. Cynopterus tithaecheilus show the higher number of red blood cells, but the size were smaller compared to the other mammals which has same body size. Mean while the concentration of hemoglobin and hematocrit were higher. The present result suggested that these haematological values might provide a greater transport oxygen capacity in the Cynopterus tithaecheilus.
Aktivitas terbang pada kelelawar membutuhkan energi paling banyak dibandingkan dengan aktivitas lokomosi lainnya. Morfofisiologi dan profil biokimia darah diduga memiliki peranan penting terhadap kemampuan terbang hewan tersebut. Penelitian ini bertujuan untuk mengetahui karakteristik morfofisiologi eritrosit dan profil biokimia darah P. vampyrus. Penelitian ini menggunakan 15 ekor kelelawar dewasa dengan bobot badan antara 669,7 g sampai 1211,5 g (x̄ = 957,51 ± 177,52 g). Sampel darah diambil secara langsung melalui ventrikel kiri jantung. Pengamatan dan pengukuran terhadap preparat ulas darah menunjukkan bahwa morfologi eritrosit P. vampyrus mirip dengan mamalia secara umum dan mempunyai diameter rata-rata 7,15 ± 0,45 µm. Koefisien variasi ukuran eritrosit (RDWc) hewan ini sebesar 18,11 ± 1,16%. Pemeriksaan hematologi yang dilakukan menggunakan automated counter menunjukkan bahwa total eritrosit (8,89 ± 1,36 106/µl), konsentrasi hemoglobin (14,33 ± 2,38 g/dl), dan nilai hematokrit (42,13 ± 6,49%) P. vampyrus relatif lebih tinggi dibandingkan dengan mamalia pada umumnya. Neutrofil dan limfosit merupakan komponen yang mendominasi jumlah leukosit. Adapun persentase jumlah neutrofil lebih tinggi dibandingkan dengan jumlah limfosit. Penelitian ini memberikan informasi dasar yang dapat mendukung penelitian terkait dengan kemampuan terbang dari P. vampyrus.
Normalization is a crucial step in gene expression analysis to avoid misinterpretation. Reverse transcription-quantitative polymerase chain reaction was used to measure the expression of 10 candidate housekeeping genes in non-differentiated (ND) and differentiated (DI) 3T3-L1 cells on days 5 and 10. We used geNorm, NormFinder, BestKeeper, RefFinder, and the ∆Ct method to evaluate expression stability. The findings revealed that (1) the expression levels of the reference genes changed over time, even in non-differentiating cells, and (2) peptidylprolyl isomerase A ( Ppia ) and TATA box-binding protein ( Tbp ) were stable reference genes for 10 days in both undifferentiated and differentiated 3T3-L1 cells. Notably, the expression of known reference genes in non-differentiating cells was altered throughout the experiment.
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