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1.
Pesqui. vet. bras ; 38(9): 1838-1843, set. 2018. tab, graf
Article in Portuguese | LILACS, VETINDEX | ID: biblio-976515

ABSTRACT

Muitas espécies de animais silvestres de vida livre servem como reservatório de bactérias patogênicas que ameaçam a saúde humana e dos animais domésticos. Algumas bactérias, como Campylobacter jejuni, Campylobacter coli, Yersinia enterocolitica e Salmonella enterica, causam enfermidades em humanos e podem contaminar os animais domésticos e silvestres. O Núcleo de Reabilitação da Fauna Silvestre da Universidade Federal de Pelotas (NURFS-UFPel) soluciona uma demanda regional específica de atenção à fauna silvestre brasileira. O objetivo desse trabalho foi identificar a presença de Campylobacter jejuni, Campylobacter coli, Salmonella spp. e Yersinia enterocolitica em animais silvestres que se encontravam em processo de reabilitação. Foram coletadas amostras de fezes, com uso de zaragatoas estéreis, de 34 aves, 16 mamíferos e 23 répteis. Dos 73 animais amostrados, quatro (5,48%) albergavam Y. enterocolitica, sendo duas aves, um mamífero e um réptil. Salmonella e Campylobacter não foram isolados. Os perfis de bandas dos isolados de Y. enterocolitica analisados pela rep-PCR foram diferentes entre si. Esses resultados indicam que as cepas isoladas não estão relacionadas entre si, não possuindo uma origem comum recente. Vanellus chilensis, Turdus rufiventris, Didelphis albiventris e Pantherophis guttatus podem albergar Y. enterocolitica e eliminá-la nas fezes, oferecendo risco de disseminação desse micro-organismo no ambiente, além de constituírem possíveis fontes de contaminação para humanos e outros animais.(AU)


Wild animals can transmit pathogenic bacteria to human and domestic animal's health. Some bacteria, such as Campylobacter jejuni, Campylobacter coli, Yersinia enterocolitica and Salmonella enterica, cause diseases in humans and can contaminate domestic and wild animais. The Núcleo de Reabilitação da Fauna Silvestre of Universidade Federal de Pelotas (Nurfs-UFPel) attend a specific regional demand of wildlife in Brazil. The aim of this paper was to identify the presence of these pathogenic bacteria in wild animals in rehabilitation. Stool samples were collected using sterile swabs from 34 birds, 16 mammals and 23 reptilian that were housed at Nurfs. Of the 73 collections, Y. enterocolitica was isolated from four (5.48%) of two birds, one mammal and one reptile. Salmonella and Campylobacter were not isolated. The molecular profile of bands of Y. enterocolitica identified in rep-PCR had differences. These results indicated that the isolates did not have a recent common origin. Pantherophis guttatus, Didelphis albiventris, Turdus rufiventris and Vanellus chilensis could shelt Y. enterocolitica and eliminate the bacteria in stool, offering risk of dissemination of these microorganisms in the environment with possible contamination of humans and other animals.(AU)


Subject(s)
Animals , Yersinia enterocolitica/pathogenicity , Campylobacter jejuni/pathogenicity , Campylobacter coli/pathogenicity , Animals, Wild/microbiology , Rehabilitation Centers
2.
Rev. méd. Chile ; 145(12): 1551-1558, dic. 2017. tab, graf
Article in Spanish | LILACS | ID: biblio-902480

ABSTRACT

Background Campylobacter jejuni is one of the main causal agents of food borne diseases. Infections with this pathogen are mainly caused by chicken meat consumption. Aim To characterize antibiotic resistance and virulence factors in C. jejuni strains obtained from chicken meat and poultry feces in Central Chile. Material and Methods The presence of C. jejuni in 30 meat and 40 feces samples from poultry was studied. From these samples, we obtained 40 strains which were characterized at the molecular level for the presence of 16 genes involved in virulence using PCR. In parallel, antibiotic resistance for ciprofloxacin, nalidixic acid, tetracycline, erythromycin, azithromycin, chloramphenicol y ampicillin was analyzed. Results Twenty and 63% of feces and chicken meat samples were positive for C. jejuni, respectively. Moreover, a high percentage of strains showed antibiotic resistance, where 27% of strains were resistant to all tested antibiotics, except for azithromycin. Finally, 10% of the strains coming from feces contained 14 out of 16 virulence genes evaluated. Only 23% of the strains did not contain any of these genes. Conclusions A high percentage of feces and chicken meat samples are contaminated with C. jejuni. Moreover, these strains show a high genetic and phenotypic diversity represented by their antibiotic resistance profiles and the presence of virulence factors.


Subject(s)
Animals , Poultry Products/microbiology , Campylobacter jejuni/drug effects , Campylobacter jejuni/pathogenicity , Feces/microbiology , Anti-Bacterial Agents/pharmacology , Reference Values , DNA, Bacterial , Microbial Sensitivity Tests , Chickens , Polymerase Chain Reaction , Campylobacter jejuni/isolation & purification , Campylobacter jejuni/genetics , Drug Resistance, Bacterial , Virulence Factors
3.
Rev. Inst. Med. Trop. Säo Paulo ; 57(5): 393-396, Sept.-Oct. 2015. tab, graf
Article in English | LILACS | ID: lil-766277

ABSTRACT

SUMMARY Feral pigeons (Columbia livia) live in close contact with humans and other animals. They can transmit potentially pathogenic and zoonotic agents. The objective of this study was to isolate and detect strains of diarrheagenic Escherichia coli and Campylobacter jejuniof urban feral pigeons from an area of Lima, Peru. Fresh dropping samples from urban parks were collected for microbiological isolation of E. coli strains in selective agar, and Campylobacterby filtration method. Molecular identification of diarrheagenic pathotypes of E.coliand Campylobacter jejuni was performed by PCR. Twenty-two parks were sampled and 16 colonies of Campylobacter spp. were isolated. The 100% of isolates were identified as Campylobacter jejuni. Furthermore, 102 colonies of E. coli were isolated and the 5.88% resulted as Enteropathogenic (EPEC) type and 0.98% as Shiga toxin-producing E. coli (STEC). The urban feral pigeons of Lima in Peru can act as a reservoir or carriers of zoonotic potentially pathogenic enteric agents.


RESUMO Os pombos selvagens (Columbia livia) vivem em estreito contato com os seres humanos e outros animais. Podem transmitir agentes potencialmente patogênicos e zoonóticos. Os objetivos deste estudo foram isolar e detectar cepas de Escherichia coli diarreiogênica e Campylobacter jejuni de pombos selvagens urbanos de uma área de Lima, Peru. Amostras de fezes frescas foram coletadas em parques urbanos para o isolamento microbiológico para cepas de E. coli em ágar seletivo e Campylobacterpor método de filtração. Identificação molecular de patótipos diarreiogênicos de E. coli e Campylobacter jejuni foi realizado por PCR. Vinte e dois parques foram amostrados e 16 colônias de Campylobacter spp. foram isolados. O 100% dos isolados foram identificados como Campylobacter jejuni. Além disso, 102 colônias de E. coli foram isoladas e 5,88% resultaram como tipo enteropatogênico (EPEC) e 0,98% como produtora de toxina Shiga (STEC). Os pombos selvagens urbanos de Lima no Peru podem atuar como reservatório ou ser portador de agentes zoonóticos entéricos potencialmente patogênicos.


Subject(s)
Animals , Campylobacter jejuni/isolation & purification , Columbidae/microbiology , Escherichia coli/isolation & purification , Campylobacter jejuni/pathogenicity , DNA, Bacterial/genetics , Escherichia coli/pathogenicity , Feces/microbiology , Peru , Polymerase Chain Reaction , Urban Population , Virulence Factors/isolation & purification
4.
Pesqui. vet. bras ; 35(8): 709-715, Aug. 2015. tab, graf
Article in Portuguese | LILACS | ID: lil-767732

ABSTRACT

Membros termofílicos do gênero Campylobacter são reconhecidos como importantes enteropatógenos para o ser humano e animais. A grande diversidade ecológica destes micro-organismos em diferentes habitats tais como água, animais e alimentos predispõem ao aparecimento de novos fatores de virulência. Este trabalho teve por objetivo detectar os genes codificantes da Toxina Distensiva Citoletal (CDT) por meio da técnica de PCR, pesquisar a atividade de hemolisinas e a influência de soluções quelantes e de íons nesta atividade. Foram utilizadas 45 amostras de Campylobacter jejuni de origem avícola para pesquisa de atividade hemolítica, cultivadas em Caldo Triptona de Soja (TSB). Após o crescimento bacteriano, as amostras foram semeadas em Ágar tríptico de soja (TSA) contendo 5% de sangue de ovino. Para verificar a influência de agentes quelantes e solução de íons na atividade hemolítica, as amostras de C. jejuni foram cultivadas em TSB contendo separadamente os quelantes EDTA, ácido acético, soluções de íons CaCl2, MgCl2 e FeCl3, em atmosfera de microaerofilia. Quanto à atividade de hemolisina de C. jejuni em placas de TSA - sangue ovino foi possível observar que houve hemólise em 40% das amostras analisadas apenas com caldo TSB. Somente o ácido acético apresentou ação quelante sobre a atividade de hemolisinas em amostras de C. jejuni semeadas em placas de TSA - sangue ovino. Para detecção dos genes cdtA, cdtB e cdtC através da técnica da Reação em Cadeia da Polimerase (PCR) foram utilizadas 119 amostras de C. jejuni de origem avícola. Foi possível observar que 37,8% possuíam o perfil de genes cdtABC. Os resultados demonstraram em amostras avícolas a presença de cepas de C. jejuni com potencial virulento, devido à presença dos genes da toxina CDT e potencial hemolítico, que apresentou ação reduzida in vitro com ácido acético...


Thermophilic members of the Campylobacter genus are recognized as important enteropathogenics for humans and animals. The great variety of ecological habitats, such as water, food and milk, may promote new virulence factors. To detect the encoding genes distending cytolethal toxin (CDT) by PCR and study the hemolytic activity with influence of chelation solutions and ions, 45 Campylobacter jejuni samples from poultry production origin were used to perform the hemolytic research. To check the influence of chelation agents and solution of ions in the hemolytic activity, samples of C. jejuni strains were grown in tryptone soy broth TSB containing chelation agents separately EDTA, acetic acid, CaCl2, MgCl2 and FeCl3 ions solutions in microaerophilic atmosphere and then streaked on 5% sheep blood tryptic soy agar (TSA). To perform the detection of cdtA, cdtB and cdtC genes the technique of Polymerase Chain Reaction (PCR) was used in 119 samples of C. jejuni from poultry production origin. We found 40% of samples showing hemolysis after growing with TSB. Only the acetic acid showed reduction in hemolysis. The prevalent gene profile was cdtABC in 37.8 % of the samples. It was observed that the results showed the presence of C. jejuni strains with virulent potential, due to presence of the CDT toxin genes and the hemolytic activity, which showed in vitro reduced when acetic acid was added...


Subject(s)
Animals , Poultry/microbiology , Campylobacter jejuni/isolation & purification , Campylobacter jejuni/pathogenicity , Acetic Acid/therapeutic use , Virulence Factors/classification , Hemolytic Agents/metabolism , Polymerase Chain Reaction/veterinary , Bacterial Toxins/isolation & purification
6.
Hig. aliment ; 21(153): 59-63, jul.-ago. 2007.
Article in Portuguese | LILACS | ID: lil-487018

ABSTRACT

A busca de novos mercados e alimentos mais seguros tem levado as indústrias de carnes a implementar uma melhoria contínua na qualidade microbiológica dos produtos. Entre os microrganismos patogênicos emergentes, encontra-se o Campylobacter jejuni, causador da campilobacteriose e ligado ao aparecimento da Síndrome de Guillian-Barre nos humanos. No abate de frangos, a escaldagem, a depenagem e o resfriamento têm sido apontados como as etapas de maior risco de contaminação. Diante disto, os pesquisadores têm testado diversos meios que inibam a proliferação ou a contaminação cruzada, com métodos físicos e agentes químicos. Para os diversos pesquisadores da área, os controles no campo, aliados aos adequados procedimentos no abatedouro, tais como BPF, PPHO, APPCC e controle de pragas, são os principais meios para inviabilizar a sobrevivência e disseminação do Campylobacter.


Subject(s)
Humans , Animals , Campylobacter jejuni/pathogenicity , Food Industry , Chickens/microbiology , Campylobacter Infections/complications , Food Handling/methods , Poultry , Brazil , Food Contamination/prevention & control , Food Microbiology , Quality Control
7.
Hig. aliment ; 21(148): 55-59, jan.-fev. 2007.
Article in Portuguese | LILACS | ID: lil-456218

ABSTRACT

Os membros do gênero Campylobacter spp. são bastonetes Gram negativos termotolerantes e crescem em uma faixa de temperatura pouco comum para bactérias (25-43 graus C). Entretanto, são facilmente destruídos pela pasteurização, não sendo termorresistentes. Apenas a partir de 1970, a campilobacteriose é considerada uma doença emergente no quadro das enfermindades de origem alimentar e é considerada como o maior causador de gastroenterite em diversos países. Este microrganismo é encontrado no trato intestinal de homens e de uma grande variedade de animais domésticos e silvestres como pássaros e roedores, até mesmo insetos albergam o microrganismo em seus exoesqueletos. Desta forma, este patógeno pode estar associado com alimentos estocados, processados, manipulados e comercializados em condições deficientes de higiene. O Campylobacter jejuni é um microrganismo que eventualmente atinge a circulação sanguínea, causando infecção em diferentes órgãos. A infecção intestinal localiza-se nos intestinos delgado e grosso. A transmissão ocorre por contato direto com animais infectados ou doentes, ou de modo indireto, por meio de ingestão de água, leite e produtos cárneos. Portanto, todos os cuidados com relação à higiene, em todas as etapas de produção do alimento devem ser considerados, como a qualidade da água de abastecimento e manipulação do alimento, evitando-se contaminações cruzadas e também o consumo de alimentos crus.


Subject(s)
Campylobacter jejuni/isolation & purification , Campylobacter jejuni/pathogenicity , Food Contamination , Meat Products , Public Health
8.
Medicina (B.Aires) ; 66(5): 450-452, 2006.
Article in Spanish | LILACS | ID: lil-451715

ABSTRACT

Campylobacter es un importante agente causante de enfermedad en el ser humano en nuestro medio. Los casos de bacteriemia ocurren principalmente en pacientes inmunosuprimidos y sondebidos frecuentemente a C. fetus. Sin embargo la bacteriemia es un episodio que también se ha observado enpacientes con enteritis por C. jejuni. Referimos dos pacientes con enteritis grave y bacteriemia, ambos con enfermedades concomitantes compatibles con inmunodepresión: uno con síndrome nefrótico de larga data y otro con hepatopatía crónica con cirrosis. Destacamos que los dos casos presentaron hematemesis y uno de ellos,enterorragia. Sugerimos prestar atención a la coloración de Gram durante el subcultivo de los caldos conhemocultivos, en busca de formas características de esta especie, y en ese caso emplear medios de cultivo enmicroaerofilia a 37 y 42 °C


Campylobacter is an importantagent of illness in human beings. Bacteremia occurs principally in the immunocompromissed host and is frequently due to C. fetus. Nevertheless bacteremia also has been observed in patients with enteritis due to C. jejuni. We refer two cases of patients with severe enteritis and bacteremia, both of them with immunosupressive concomitant diseases such as nephrotic syndrome and chronic cirrotic hepatopathy. Both patients presented hemathemesis


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Bacteremia/microbiology , Campylobacter Infections/complications , Campylobacter jejuni/pathogenicity , Enteritis/microbiology , Abdominal Pain/microbiology , Abdominal Pain/physiopathology , Bacteremia/physiopathology , Campylobacter Infections/physiopathology , Campylobacter jejuni/isolation & purification , Diarrhea/microbiology , Diarrhea/physiopathology , Enteritis/physiopathology , Hematemesis/microbiology , Hematemesis/physiopathology , Immunocompetence
9.
Rev. chil. nutr ; 27(3): 332-9, dic. 2000.
Article in Spanish | LILACS | ID: lil-284970

ABSTRACT

La contaminación de alimentos es un problema mundial que ha motivado a la OMC y al Codex Alimentarius a apoyar nuevas estrategias para asegurar la producción de alimentos seguros para todos. Los procedimientos basados en el análisis de riesgos y control de los puntos críticos (HACCP) constituyen la principal herramienta para el logro de este objetivo. El éxito de este sistema se basa en sólidos conocimientos científicos, y considera no sólo a microorganismos patógenos, sino también a las interacciones microbio-alimentos-huésped. La investigación e información científica es por lo tanto, crucial para el mejoramiento en la seguridad de los alimentos, y para reducir el consumo de alimentos contaminados. No menos de 10 Patógenos Microbianos Emergentes asociados a gastroenteritis y contaminación de alimentos. Estos son, Campylobacter jejuni, Escherichia coli enterohemorragica, Listeria monocytogenes. Arcobacter butzleri, Helicobacter pylori, Criptoporidium parvum, Cyclospora cayetanensis, de la Hepatis A virus Calicivirus and Rotavirus. Se han desarrollado un gran número de tests rápidos para detectar apropiadamente estos patógenos en alimentos contaminados. La mayoría de estos ensayos están basados en técnicas moleculares como PCR, inmunoensayos en fase sólida y otros. Esto implica que si el sistema HACCP va a ser implementado, y por lo tanto la industria de alimentos requerirá de inversiones y de entrenamiento, los laboratorios de microbiología de alimentos deberán establecer metodologías moleculares nuevas y entrenar adecuadamente a su personal. Por último, las agencias gubernamentales de control de alimentos deberán progresar desde un sistema basado en el control del producto final, a un dirigido a la estimación de riesgos y a la prevención. Estos importantes desafíos están aún pendientes en nuestro país


Subject(s)
Humans , Food Contamination/prevention & control , National Health Strategies , Primary Prevention/methods , Arcobacter/pathogenicity , Campylobacter jejuni/pathogenicity , Cryptosporidium/pathogenicity , Escherichia coli/pathogenicity , Food Hygiene , Helicobacter/pathogenicity , Foodborne Diseases/prevention & control , Listeria monocytogenes/pathogenicity
11.
Rev. méd. Chile ; 126(8): 919-23, ago. 1998. tab
Article in Spanish | LILACS | ID: lil-232937

ABSTRACT

Background: Small intestine alterations produced by the enterotoxigenic capacity of Campylobacter jejuni subsp. jejuni are similar to the hydric, electrolytic and pathological changes caused by choleraic and thermolabile Escherichia coli toxins. Aim: To study the enterotoxigenic capacity of 4 strains of Campylobacter jejuni subsp. jejuni using the intestinal loop model. Material and methods: Rat intestinal loops were inoculated with culture filtrates of the four strains. Enterotoxigenicity was assessed by fluid accumulation, the increase in Na+ and Cl- in the loop fluid, and cAMP increases in loop tissues. An enterotoxigenic Escherichia coil strain and sterile Brucella both were used as positive and negative controls, respectively. Results: The filtrates of two strains produced fluid accumulation in the loops, significantly increased Na+ and Cl - secretion to the intestinal lumen and increased tissue cAMP levels. Conclusions: Some strains of Campylobacter jejuni subsp. jejuni are able to show enterotoxigenicity in vivo, increasing cAMP levels in the intestinal cells and altering electrolyte exchange mechanisms


Subject(s)
Animals , Rats , Campylobacter jejuni/pathogenicity , Enterotoxins/toxicity , Rats, Wistar/microbiology , Cyclic AMP/analysis
12.
Rev. chil. cienc. méd. biol ; 8(1): 11-5, 1998. ilus, tab
Article in Spanish | LILACS | ID: lil-231640

ABSTRACT

Se describe la perfusión intestinal en animales de experimentación, utilizado como modelo biológico aplicable al estudio de la enterotoxigenicidad bacteriana in vivo. Se presentan los resultados obtenidos con este método en la determinación de la capacidad enterotoxigénica de Camplylobacter jejuni y Campylobacter coli y se discuten sus ventajas y desventajas


Subject(s)
Animals , Rats , Campylobacter coli/pathogenicity , Campylobacter jejuni/pathogenicity , Enterotoxins/pharmacokinetics , Perfusion , Intestinal Absorption , Polyethylene Glycols , Rats, Wistar
14.
Indian J Med Sci ; 1997 Jun; 51(6): 196-203
Article in English | IMSEAR | ID: sea-67204

ABSTRACT

Infectious diarrhoea is one of the most common illness affecting mankind. Recent advancement have led to detailed understanding of causative agents and the pathogenesis of the infections. Fluid and electrolyte replacement remains the most important aspect of treatment. The role of antimicrobial agents is discussed.


Subject(s)
Adenoviridae/pathogenicity , Animals , Campylobacter jejuni/pathogenicity , Clostridioides difficile/pathogenicity , Cryptosporidium/pathogenicity , Diarrhea/microbiology , Entamoeba histolytica/pathogenicity , Escherichia coli/pathogenicity , Fluid Therapy , Giardia lamblia/pathogenicity , Humans , India/epidemiology , RNA Viruses/pathogenicity , Salmonella typhimurium/pathogenicity , Shigella/pathogenicity , Virulence , Yersinia enterocolitica/pathogenicity
15.
Rev. chil. obstet. ginecol ; 62(1): 45-7, 1997.
Article in Spanish | LILACS | ID: lil-197881

ABSTRACT

Campylobacter jejuni es agente frecuente de infecciones entéricas en todo el mundo. Ocasionalmente puede producir aborto en la mujer. Tiene un mecanismo de transmisión fecal-oral. Posee características de cultivo exigentes y requiere para su aislamiento incubación prolongada. La infección por este microorganismo en Chile es infrecuente y no representa un problema de Salud Pública, no obstante se comunica este caso clínico por las consecuencias que tiene en la gestación. Además se recuerdan las medidas a tomar frente a cuadro febril que aparece durante el embarazo


Subject(s)
Humans , Female , Pregnancy , Adult , Abortion, Spontaneous/etiology , Campylobacter Infections/complications , Campylobacter jejuni/pathogenicity , Pregnancy Complications, Infectious , Abortion, Spontaneous/microbiology , Ampicillin/therapeutic use , Campylobacter Infections/diagnosis , Campylobacter Infections/drug therapy , Campylobacter Infections/transmission , Campylobacter jejuni/isolation & purification , Pregnancy Trimester, Second , Signs and Symptoms
16.
Medicina (B.Aires) ; 56(5/1): 487-92, sept.-oct. 1996. ilus, tab, graf
Article in Spanish | LILACS | ID: lil-188413

ABSTRACT

Utilizando una cepa flagelada (052) y una aflagelada (T-1), se estudió la participación de epítopes flagelares de C. jejuni en la adhesión a células HEp-2 in vitro. La cepa 052 presentó una capacidad de adhesion significativamente mayor que la cepa T-1. Cuando los ensayos de adhesión fueron realizados en presencia de anticuerpos monoclonales dirigidos contra epítopes flagelares, la capacidad de adhesión de la cepa 052 experimentó una inhibición que fluctuó entre 64,3 y 92,9 por ciento. Mediante una prueba de ELISA se comprobó que estos anticuerpos monoclonales eran específicos y estaban dirigidos exclusivamente contra epítopes flagelares de la cepa 052, no reaccionando con la cepa T-1. Estos resultados demuestran que epítopes flagelares de C. jejuni estarían participando en el proceso de adhesión, sugiriendo la intervención del flagelo en la instalación del proceso infeccioso.


Subject(s)
Humans , Male , Infant , Campylobacter jejuni/ultrastructure , Cell Adhesion , Flagella/immunology , Antibodies, Monoclonal/immunology , Campylobacter Infections/microbiology , Campylobacter jejuni/isolation & purification , Campylobacter jejuni/pathogenicity , Enzyme-Linked Immunosorbent Assay , Microscopy, Electron
17.
JCPSP-Journal of the College of Physicians and Surgeons Pakistan. 1996; 6 (1): 43-46
in English | IMEMR | ID: emr-95936

ABSTRACT

Several new organisms including Aeromonas and Campylobacter jejuni have been added to the list of diarrhoea causing bacterial agents during the last decade. The present study was undertaken to investigate the bacterial aetiology of infantile diarrhoea in Karachi. Effect of different epidemiological factors on the frequency of these infections was also studied. One hundred and eighty rectal swab samples were collected from patients attending the Diarrhoea Unit at the National Institute of Child Health, Karachi and out patient Department of the Abbassi Shaheed Hospital, Karachi, Pakistan. The samples were processed according to standard procedures. C. Jejuni and A. hydrophila were found to be the most common bacterial agents of infantile diarrhoea in Karachi followed by S. typhi and Sh. dysentriae. Breast fed children were found to be completely protected against C. jejuni infection, and they were at a lower risk of other diarrhoea causing bacterial infections as compared to those who were fed by bottle milk. Unboiled water used for the preparation of infant milk formula was found to be the major factor involved in the epidemiology of infectious diarrhoea


Subject(s)
Campylobacter jejuni/pathogenicity , Campylobacter Infections/epidemiology , Breast Feeding/physiology , Diarrhea, Infantile/epidemiology , Infant Mortality , Social Class
19.
Iranian Journal of Public Health. 1995; 24 (3-4): 45-54
in English | IMEMR | ID: emr-37477

ABSTRACT

During a period of 5 months of 276 faecal specimens of inpatients, aged 0 to 5 years old, with diarrhea in Zahedan, were screened for evidence of enteric Campylobacteria. For isolation, the stool was plated on a selective medium and incubated at 42oc in a microaerophilic atmosphere for 48-72 hours. On Gram stain, the organisms were small, curved, comma shaped and gram negative rods. The following tests, which have been done, were among the most important differential characteristics for Campylobacter species: catalase, oxidase, hippurate hydrolysis, growth in the presence of 1% glycin, 3.5% Nacl and 42oC, susceptible to nalidixic acid and cephalotin. The results were shown that out of 276 specimens, 15[5.4%] were positive for Campylobacter, 10 organisms were C. jejuni, whereas 5 were identified to be C. coli. All strains were isolated from children below 2 years of age. These were sensitive to nalidixic acid, erythromycin, streptomycin and nitrofuranotoin, while the isolates were resistant to cephalotin, penicillin G, co-trimoxazol and amoxicillin


Subject(s)
Humans , Diarrhea/etiology , Diarrhea/microbiology , Campylobacter jejuni/isolation & purification , Campylobacter jejuni/pathogenicity
20.
Biol. Res ; 28(3): 205-10, 1995.
Article in English | LILACS | ID: lil-228564

ABSTRACT

Invasive properties of 15 strains of thermotolerant Campylobacter (12 C. jejuni and 3 C. coli) were studied using HeLa cells cultures. In four of them (3 C. jejuni and 1 C. coli), randomly selected, intestinal perfusion experiments were conducted in order to asses enterotoxigenicity. All strains were able to invade HeLa cells. The number of invaded HeLa cells ranged from 3 to 46 percent. In addition to their invasive properties, the 4 strains used in perfusion experiments were able to induce either a net secretory flux or an impaired sodium transport


Subject(s)
Animals , Cats , Dogs , Humans , Campylobacter coli/pathogenicity , Campylobacter jejuni/pathogenicity , Enterotoxins/physiology , HeLa Cells
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