Objective: To determine the frequency of antimicrobial resistance in bacteria from healthy Swedish dogs and whether they are carriers of methicillinresistant Staphylococcus aureus (MRSA). Material: Samples from skin from the perineal region and from faeces collected in the anus with cottonswab (Copan) from 299 healthy Swedish dogs. Samples were collected at dog exhibitions. Method: Specimens were submitted for bacterial culture where bacteria (Escherichia coli, enterococci and staphylococci) were isolated and identified by current methods. Antimicrobial susceptibility testing was performed with a microdilution method where MIC-values were determined. Staphylococci with high degree of resistance were tested for presence of mecA-gene by PCR.

Stafylococcus aureus, Stafylococcus epidermidis, Escherichia coli, Streptococcuspyogenes och Bacillus sp. är bakterier som förekommer i vår normalflora eller runt om ivår omgivning. De är i de allra flesta fall harmlösa men kan orsaka sjukdom ifall dehamnar i t.ex. sår eller kontaminerar mat. Vissa av dessa bakterier har även en tendens attutveckla resistens mot antibiotika, infektioner orsakade av resistenta bakterier kan bliallvarliga och väldigt svåra att behandla.

In the country of Jordan, egg production is very important economically, but several bacte-ria are involved in food borne diseases transmitted from eggs or other poultry products. The most important are Salmonella spp., Campylobacter jejuni and Escherichia coli. In Jordan two different housing systems are used for hens in large scale egg production; con-ventional cages and litter floor systems. Eggs from four different farms were analysed and compared to see if a difference could be found regarding the presence of pathogenic bacte-ria on the egg surfaces between these two systems. Total number of aerobic bacteria was analysed, the presence of Salmonella spp., C.

Verotoxinproducerande E. Coli, VTEC är en zoonotisk bakterie som kan orsaka allvarlig sjukdom hos människa. Forskning kring VTEC har framför allt varit inriktad på nötkreatur vilka tidigt utpekades som en viktig smittkälla för människa. Förhållandevis få studier har gjorts på får och fårprodukter och kunskapsluckorna är stora både vad gäller förekomst och utbredning av VTEC hos detta djurslag. Syftet med denna studie var att utreda om får kan utgöra en smittkälla för människa vad gäller verotoxinbildande E.

Förekomsten av sjukdomen kolibacillos har ökat inom besättningar med värphöns. Utbrott av sjukdomen orsakar ekonomiska förluster inom alla produktionsgrenar av fjäderfä. Ett samband kan ses mellan ökningen av antalet kolibacillos-utbrott och den ökade andelen frigående besättningar. Flertalet parametrar i hönsens omgivande stallmiljö inverkar på känsligheten för infektion. Producenten bör lägga vikt vid att kontrollera ventilationen i stallet för att hålla kontroll på ammoniak, damm, luftflöden, luftfuktighet och temperatur, vilka samtliga inverkar på spridningen och infektionspotentialen hos sjukdomsframkallande sk.

Oxochlorates are anions with a partially naturally occurrence in nature but are also spread by human activities, including the paper industry. These compounds are harmful to both nature and humans, which makes it necessary to find a good way for their degradation. There are two different kinds of bacteria that can use oxochlorates as electron acceptors in their metabolism, bacteria that break down perchlorate and bacteria that break down both perchlorate and chlorate. A bacterium that can break down chlorate under anaerobic conditions is Ideonella dechloratans which holds the genes for chlorite dismutase and chlorate reductase which are enzymes for the degradation of chlorate. Gene expression and enzyme activity of chlorite dismutase are induced under anaerobic conditions, which makes it interesting to find out how this regulation functions in order to better exploit these bacteria in biological wastewater treatment.

The aims of the study were to investigate the prevalence and antibiotic resistance of Campylobacter jejuni and Campylobacter coli in chicken and chicken products, and to investigate farmer awareness of antibiotic resistance development. The study was conducted in the Can Tho province in Vietnam during six weeks in October to November 2008. Ninety-six samples from raw chickens were collected from twelve market places and analysed for the presence of Campylobacter. A total of 96 cloacal swabs from 20 farms were obtained and analysed for the presence of Campylobacter. Farmers were asked to answer eight questions concerning the housing of the chickens, modes of handling sick animals as well as use and knowledge of antibiotics and resistance development to antibiotics.

Denna uppsats är ett förarbete för att formulera ett protokoll för provtagning och för bedömning av hygienstatus av ytvatten som ska användas för bevattning av frilandsgrödor. Studiens syfte var att beskriva hygienstatus hos ytvatten med hjälp av heterotrofa organismer vid 22°C, totalantal koliforma bakterier, fekala koliforma bakterier, Escherichia coli, fekala streptokocker och Salmonella spp. Erhållna resultat jämfördes med tyska DIN 19650 och kanadensiska Water Quality Criteria for Microbiological Indicators. Försöket gjordes i två odlingar och för varje odling genomfördes två provtagningsserier. En serie bestod av fem provtagningstillfällen vilka genomfördes inom en 30-dagarsperiod.

Kullutjämning är en vanlig metod som grisproducenter runt om i världen använder för att få en högre smågrisöverlevnad. Syftet med detta arbete var att undersöka om kullutjämning är en fungerande metod för högre smågrisöverlevnad och vilka faktorer som påverkar om det bör ske en kullutjämning eller ej. De faktorer som tas upp i arbetet är bland annat kullstorleken, vid vilken vikt och ålder smågrisar ska omplaceras samt vilka smittor som kan överföras vid en kullutjämning. Födelsevikten har betydelse för smågrisöverlevnaden och kan påverkas av flera olika faktorer, som bland annat kullstorlek och smågrisarnas placering i livmodern. Vid för låg födelsevikt och för lågt intag av råmjölk, kan smågrisar få problem med olika smittor som exempelvis bakterien Escherichia coli (E.

The aims of the study were to investigate the prevalence and antibiotic resistance of Campylobacter jejuni and Campylobacter coli in chicken and chicken products, and to investigate farmer awareness of antibiotic resistance development. The study was conducted in the Can Tho province in Vietnam during six weeks in October to November 2008. Ninety-six samples from raw chickens were collected from twelve market places and analysed for the presence of Campylobacter. A total of 96 cloacal swabs from 20 farms were obtained and analysed for the presence of Campylobacter. Farmers were asked to answer eight questions concerning the housing of the chickens, modes of handling sick animals as well as use and knowledge of antibiotics and resistance development to antibiotics.

Fotosyntesen kallas den process som omvandlar ljusenergi till kemisk energi. Fotosyntesen sker i tylakoidmembranet och drivs av två stora proteinkomplex, fotosystem II (PSII) och fotosystem I (PSI) då de tillförs energi i form av fotoner. PSI-N är ett mindre protein på ca 10 kDa som ingår i PSI. På något sätt, som ännu inte är klarlagt, samverkar PSI-N med PSI-F och plastocyanin när det dockar till PSI. Det är därför av viktigt att rena fram större mängder av PSI-N för att få djupare kunskaper om proteinet samt dess struktur och funktioner.

The genus Campylobacter is globally recognised as the leading bacterial cause of human foodborne gastroenteritis. Every year around 8000 Swedes are infected by Campylobacter. Most people are infected by thermotolerant Campylobacter species, commonly C. jejuni and C. coli.

Tripeptidyl peptidase II (TPPII) is an exopeptidase which cleaves tripeptides from theN-terminus of peptides. The exact functional role of TPPII is still a matter of investigation. Itis believed that the enzyme is primarily involved in intracellular protein degradation, where itcooperates with the proteasome and other peptidases to degrade proteins into free aminoacids. These amino acids can subsequently be used in the production of new proteins. The aimof this work was to express murine wild type TPPII using E.

The complexity of the mast cell is becoming more prominent. From being the cell recognized just to contribute to allergic inflammation it is now also associated with wound healing, protection against tumor growth and in recognition and defense against a wide range of pathogens. The location of the mast cell in the barrier between the external and internal environment of the body enables the cell to quickly respond to invading bacteria, virus and parasites. Diarrhea due to Escherichia coli infection, listeriosis, toxoplasmosis, Newcastle disease and bovine respiratory syncytial virus are examples of mast cell activating diseases that can affect animals in, as well as outside, the agricultural sector. Additionally, ticks and tick-borne diseases are of concern.

AbstractIntroductionOccurrence of bacteraemia and fungemia is a serious condition with high mortality and the incidence is increasing worldwide. The aim of this study was to survey the occurrence of bacteria and fungi in blood cultures from adult patients domiciled in the county of Gävleborg during one year and also to calculate the incidence and mortality in the same geographical area.MethodThis is a descriptive epidemiologic study, based on all episodes of blood cultures analyzed at the Microbiology laboratory, Gävle hospital during 2005. Patients from 20 years of age, domiciled in the county of Gävleborg at the date of drawing the blood culture, where included in the study. Criteria of exclusion were negative blood cultures and cultures which were classified as contaminants.ResultsAltogether there were 4 564 blood cultures analyzed, resulting in 524 (11 %) positive cultures for further study. There were 442 patients (48 % women) involved in 499 episodes with confirmed bacteraemia or fungemia.