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Genetic Characterization of Staphylococcus aureus Isolated from Retail Meat in Riyadh, Saudi Arabia.

ABSTRACT: Limited data exist from the Gulf Cooperation Council states on the prevalence and population dynamics of Staphylococcus aureus colonizing livestock or contaminating retail meat. This study was designed to determine the presence and genetic characteristics of Staphylococcus aureus isolated from raw retail meat sold in Riyadh, Saudi Arabia. Over a period of 9 months, different raw retail meat types were aseptically processed using the double broth enrichment technique, characteristic colonies from chromogenic and mannitol salt agar were further identified using conventional methods. Susceptibility to 9 antibiotics was determined using the disc diffusion technique. Interpretation of inhibition zone was done according to Clinical and Laboratory Standards Institute guidelines. Molecular characterization was carried out using the StaphyType DNA microarray technology. Twenty-five meat samples yielded Staphylococcus aureus isolates. Camel meat had the highest contamination rate with Methicillin resistant Staphylococcus aureus (MRSA) (20%) and Methicillin susceptible Staphylococcus aureus (28%), while poultry meat had the least contamination rate with MRSA (4%). The MRSA isolates were grouped into 4 clonal complexes (CCs) namely CC1-MRSA-IV/SCCfus (n = 2), CC15-MRSA-V/SCCfus (n = 4), CC80-MRSA-IV/PVL+ (n = 5), and CC88-MRSA-IV/PVL+ (n = 2). All CC15-MRSA-V/SCCfus isolates were obtained from camel meat. This is the first study to demonstrate the novel CC15-MRSA-V/SCCfus in retail camel meat. We recommend that surveillance studies should be incorporated in public health and food hygiene programs.

SUBMITTER: Raji MA

PROVIDER: S-EPMC4899468 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Genetic Characterization of Staphylococcus aureus Isolated from Retail Meat in Riyadh, Saudi Arabia.

Raji Muhabat A MA Garaween Ghada G Ehricht Ralf R Monecke Stefan S Shibl Atef M AM Senok Abiola A

Frontiers in microbiology 20160609

Limited data exist from the Gulf Cooperation Council states on the prevalence and population dynamics of Staphylococcus aureus colonizing livestock or contaminating retail meat. This study was designed to determine the presence and genetic characteristics of Staphylococcus aureus isolated from raw retail meat sold in Riyadh, Saudi Arabia. Over a period of 9 months, different raw retail meat types were aseptically processed using the double broth enrichment technique, characteristic colonies from ...[more]

PMID: 27375611

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Project description:This study was to estimate the prevalence and characteristics of Staphylococcus aureus from 1,850 retail meat and meat products in China during July 2011 to June 2016. The samples were collected covering most provincial capitals in China, including 604 raw meat, 601 quick-frozen meat, and 645 ready-to-eat meat. Using the qualitative and quantitative methods, all 39 cities had S. aureus-positive samples, and S. aureus was detected in 35.0% (647/1,850) of the samples. The levels of S. aureus in retail meat showed that the MPN value of the majority of the positive samples ranged from 0.3 to 100 MPN/g. Twenty-four antibiotics were used to test all 868 S. aureus isolates for antibiotic susceptibility. Only 11 isolates (1.26%) were susceptible to all antibiotics, whereas most isolates (821/868, 94.6%) showed resistance or intermediary resistance to more than three or more antibiotics. Of these strains, 104 (12.0%) were resistant to more than 10 antibiotics. However, the most frequent resistance was observed to ampicillin (85.4%), followed by penicillin (84.6%), erythromycin (52.7%), tetracycline (49.3%), kanamycin (45.3%), telithromycin (30.1%), clindamycin (29.6%), streptomycin (21.1%), norfloxacin (20.4%), gentamicin (19.4%), fusidic acid (18.4%), ciprofloxacin (16.9%), chloramphenicol (13.1%), amoxycillin/clavulanic acid (11.0%), and others (<10%). 7.4% of isolates (62/868) were confirmed as methicillin-resistance S. aureus (MRSA). By molecular typing analysis, there were 164 spa types and 111 STs were identified, including 15 novel spa types and 65 newly STs by multilocus sequence typing (MLST) and spa typing. Despite the wide genetic diversity observed among the 868 isolates, a great proportion of the population belonged to finite number of major clones: ST1-t127 (93/868, 10.7%) and ST7-t091 (92/868, 10.6%), ST5-t002 (42/868, 4.8%), ST398-t034 (40/868, 4.6%), ST188-t034 (38/868, 4.4%), ST59-t437 (30/868, 3.5%), ST6-t701 (29/868, 3.3%), and ST9-t899 (27/868, 3.1%) in China. This study reflects S. aureus was readily detected in Chinese retail meat and meat products but the level were not very excessive. In this study, the high antibiotic resistance is alarming and raising public health concern. In additions, most of molecular types of isolates have been linked to human infections around the world, indicating that these types of S. aureus in China have a theoretical pathogenic potential.

Project description:Background:Children diagnosed with autism spectrum disorder (ASD) have social and cognitive disabilities. For parents, these behaviors can lead to humiliation, social exclusion, and isolation. Stigma is a problem that not only may affect the individual with high functioning autism, but has the potential to extend to their family as well. Indeed, research indicates that the parents of children with disabilities (including ASD) commonly experience stigmatizing reactions from others. Aim of work:To determine the prevalence of self and enacted stigma among parents of ASD children from Riyadh, Saudi Arabia, and recognize possible risk factors and causes of stigmatization. Material and methods:An observational cross-sectional study involving the parents of ASD children from Riyadh, Saudi Arabia. About 163 participants were included from the Centre for Autism Research (CFAR) at King Faisal Specialist Hospital & Research Centre (KFSH & RC) in Riyadh. The primary material used for data collection was a five-point scale questionnaire developed by the investigator. The questionnaire consisted closed ended questions related to the participants' demographic data, autistic child, family life, resources, and social experiences as a parent. The collected data were analyzed using descriptive statistics and appropriate statistical analysis, using Statistical package for the social sciences (SPSS), version 22. The level of significance was P value?<?.05. Results:The findings of this work indicated that 55 (33.7%) of the parents scored more than 3 in answering questions related to felt stigma; 82 (50.3%) were fathers. On the other hand, 108 (66.3%) did not feel stigmatized being a parent of autistic child. Forty-two (25.8%) of the parents scored more than 3 in answering questions related to enacted stigma, whereas 121 (74.2%) did not face enacted stigmatization being a parent of autistic child. There was a strong tendency for mothers (41, 75%) to feel more self- and enacted stigmatized than fathers (P?<?.05). Moreover, the gender of the autistic child, consanguinity, severity of the ASD, and the monthly income of the family showed no significant difference in the parents who scored more than 3 for felt- or enacted stigmatization (P?>?.05). Conclusion:Among participated parents of children with ASD in Riyadh, Saudi Arabia, 33.7% of them experienced stigmatization, and mothers felt more self- and enacted stigmatized when compared to fathers. Public awareness among people in Saudi Arabia have been increased and, thus, negative stigmatization has decreased among parents in the country. A high level of felt stigma suggests the need for psychological intervention for the family to help cope with this new situation. A higher level of enacted stigma suggests the need for their rights (individuals with ASD) and increased awareness in the society. It is recommended that further research is needed in different centers in Riyadh and other regions of Saudi Arabia to investigate the prevalence of stigma in parents of autistic children.

Dataset Information

Genetic Characterization of Staphylococcus aureus Isolated from Retail Meat in Riyadh, Saudi Arabia.

Publications

Genetic Characterization of Staphylococcus aureus Isolated from Retail Meat in Riyadh, Saudi Arabia.

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