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Wyszukujesz frazę "Rizvi, F." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Seroprevalence, associated risk factors and clinico-pathological studies of buffalopox disease in various regions of Punjab province, Pakistan
Autorzy:
Usmani, M.W.
Rizvi, F.
Khatoon, A.
Mahmood, M.S.
Powiązania:
https://bibliotekanauki.pl/articles/16539103.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
seropositive
single radial hemolysis
scab samples
PCR
C18L gene
leukocytes
Opis:
Buffalopox (BPX) is a highly contagious disease that causes high morbidity and production losses in buffaloes. During this study, seroprevalence, effect of various associated risk factors, and pathological studies of BPX were recorded in the Punjab province. A total of 97 blood samples and 63 scabs were collected from clinically pox suspected buffaloes. Serum was harvested to perform single radial hemolysis to assess the seroprevalence, and scabs were subjected to PCR for BPX virus confirmation. Results revealed that, animal demographics and environmental associated factors showed significant effect (p<0.05,1<R2>0) on BPX occurrence. The overall BPX seroprevalence was recorded 4.18% in the Punjab province. The BPX was recorded 5.48% in Nili Ravi breed during winter (7.42%), aged 5-7 years (7.46%) under loose housing (5.51%) in the Faisalabad region (8.03%). Further, BPX was 5.37% in pregnant, 6.86% pregnant milking buffaloes during the 3rd lactation period (7.28%) in dairy herds (5.20%). The BPX was 5.22% in non-vaccinated buffaloes where multiple animals were reared together (4.99%) in the herds having 21-30 total number of animals. A total of 49 scab samples were found positive for the BPX virus via PCR with C18L gene amplification. Grossly, inflammatory lesions with pits in the center and wart-like nodules were seen on teats and udder of buffaloes. Increased leukocytes, especially neutrophils and lymphocytes, were seen in the blood of the infected animals. These results provide a broader window to understand the effect of associated risk factors, strengthen the diagnostic aid, and to contain the current spread of BPX in Pakistan to safeguard large ruminant-based livelihood.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 1; 137-147
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Promising substitute of inconsistent algal alginates: exploring the biocompatible properties of di-O-acetylated, poly-L-guluronate-deficient alginate from soil bacterium Pseudomonas aeruginosa CMG1418
Autorzy:
Muhammadi, .
Shafiq, Shabina
Rizvi, Zarrin F.
Powiązania:
https://bibliotekanauki.pl/articles/16706193.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
di-O-acetylated alginate
biocompatiblity
water-holding
emulsifying
flocculating
viscosifying
Opis:
The structural inconsistencies in commercial algal alginates have limited their reliability and quality for various applications. Therefore, the biosynthesis of structurally consistent alginates is crucial to replace the algal alginates. Thus, this study aimed to investigate the structural and alginate's structural and functional properties of Pseudomonas aeruginosa CMG1418 as a substitute. To achieve this, the CMG1418 alginates were physiochemically characterized using various techniques such as transmission electron microscopy, Fourier-transform infrared 1H-NMR, 13C-NMR, and gel permeation chromatography. The synthesized CMG1418 alginate was then subjected to standard tests to evaluate its biocompatibility, emulsification, hydrophilic, flocculation, gelling, and rheological properties. The analytical studies revealed that CMG1418 alginate is an extracellular and polydisperse polymer with a molecular weight range of 20 000–250 000 Da. It comprises 76% poly-(1–4)-β-D-mannuronic acid (M-blocks), no poly-α-L-guluronate (G-blocks), 12% alternating sequences of β-D-mannuronic acid and α-L-guluronic acid (polyMG/GM-blocks), 12% MGM-blocks, 172 degrees of polymerization, and di-O-acetylation of M-residues. Interestingly, CMG1418 alginate did not show any cytotoxic or antimetabolic activity. Moreover, compared to algal alginates, CMG1418 alginate exhibited higher and more stable flocculation efficiencies (70–90%) and viscosities (4500–4760 cP) over a wide range of pH and temperatures. Additionally, it displayed soft to flexible gelling abilities and higher water-holding capacities (375%). It also showed thermodynamically more stable emulsifying activities (99–100%) that surpassed the algal alginates and commercial emulsifying agents. However, only divalent and multivalent cations could slightly increase viscosity, gelling, and flocculation. In conclusion, this study explored a structurally di-O-acetylated and poly-G-blocks-deficient, biocompatible alginate, and its pH and thermostable functional properties. This research suggests that CMG1418 alginate is a superior and more reliable substitute for algal alginates in various applications, such as viscosifying, soft gelling, flocculating, emulsifying, and waterholding.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 2; 137-155
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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