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- 저자 : Aroonlug Lulitanond (검색결과 2 건)
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Nahathai Uttamamul,Supranee Jitpean,Aroonlug Lulitanond,Lumyai Wonglakorn,Nattaya Sae-ung,Patcharee Boonsiri,Jureerut Daduang,Ratree Tavichakorntrakool 대한수의학회 2022 Journal of Veterinary Science Vol.23 No.1
Background: With limited information available, the association among urinary tract infections, urease-producing bacteria and the presence of magnesium ammonium phosphate (MAP) urolithiasis in canines in Thailand requires more study. Objectives: This study aimed to investigate the association between demographic characteristics of canines and the presence of MAP urolithiasis in canines, and to evaluate antimicrobial susceptibility patterns of bacteria isolated from canine uroliths. Methods: A total of 56 canines admitted for treatment with surgical removal of uroliths were recruited. Demographic characteristics and clinical chemistry data were recorded. Bacteria isolated from the removed uroliths were identified. Chemical compositions of the uroliths were analyzed by Fourier transform infrared spectrometer. Potential risk factors were determined with univariable and multivariable logistic regression analyses. Results: Of 56 canine urolithiasis, bacteria were isolated from uroliths of 38 canines (27 MAP and 11 non-MAP) but not from uroliths of 18 canines (5 MAP and 13 non-MAP). The most common bacteria found in nidus of MAP uroliths was Staphylococcus pseudintermedius (approximately 51%). An antimicrobial resistance was frequently found in Staphylococci isolates (42.86%). Multivariate logistic regression analysis showed that the predictors of MAP urolith in canine urolithiasis were being female (p = 0.044; adjusted odds ratio [OR], 10.22; 95% confidence interval [CI], 1.06–98.24) and the positive urolith culture (p = 0.012; adjusted OR, 8.60; 95% CI, 1.60–46.30). Conclusions: Our results indicate that S. pseudintermedius (a urease-producing bacterium) is the major causative bacteria of MAP uroliths. A positive urolith culture and being female are risk factors of MAP urolithiasis in canines.
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Siroj Jitprasutwit,Wisansanee Thaewpia,Veerachat Muangsombut,Aroonlug Lulitanond,Chanvit Leelayuwat,Ganjana Lertmemongkolchai,Sunee Korbsrisate 한국미생물학회 2010 The journal of microbiology Vol.48 No.4
Burkholderia thailandensis is a close relative of Burkholderia pseudomallei. These organisms are very similar,but B. thailandensis is far less virulent than B. pseudomallei. Nucleotide sequencing and analysis of 14 B. thailandensis isolates revealed variation in the regions coding for the type III secreted BipD protein. The degree of B. thailandensis BipD sequence variation was greater than that found in B. pseudomallei. Western blot analysis indicated that, unlike B. pseudomallei, B. thailandensis type III secreted proteins including BipD and BopE could not be detected in the supernatant of culture medium unless induced by acidic conditions. In addition, culturing B. thailandensis under acidic growth conditions (pH 4.5) can induce the ability of this bacterium to invade human respiratory epithelial cells A549. The identification of an environmental stimulus that increases the invasion capability of B. thailandensis invasion is of value for those who would like to use this bacterium as a model to study B. pseudomallei virulence.
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