In vitro study of antimicrobial activity of some plant seeds against bacterial strains causing food poisoning diseases / Estudo in vitro da atividade antimicrobiana de algumas sementes de plantas contra cepas bacterianas que causam doenças de intoxicação alimentar

In this research, some plant seeds powder was evaluated to find their potential effect to rule diseases of food poisoning. Antimicrobial effect of five plant seeds was examined contra Bacillus cereus, Staphylococcus aureus, Escherichia coli, Klebsiella. pneumonia and Candida albicans by using well diffusion method. Antimicrobial activity studies revealed high potential activity of plant seeds powder of Nigella sativa L., cucurbita pepo, Sesamum radiatum, Trigonella foenum-graecum, Linum usitatissimum with variable efficiency contra tested microbial strains with concentration of 100 mg/ml, except Sesamum radiatum scored no effect. The T. foenum and N. sativa seed powder showed the largest inhibition zone (24-20 mm) contra K. pneumonia, followed by S. aureus (20-18 mm) and C. albicans (15mm) respectively. The five plant seeds powder exhibited bacteriostatic and bactericidal effects with MIC's 20 and MBC 40 mg/ml against K. pneumonia, and MIC's 40 and MBC 60 mg/ml against S. aureus. The results of this study indicated that plants seeds powder have promising antimicrobial activities and their potential applications in food process. It could be utilized as a natural medicinal alternative instead of chemical substance.

Nesta pesquisa, o pó de sementes de plantas foi avaliado para encontrar seu efeito potencial no controle de doenças de intoxicação alimentar. O efeito antimicrobiano de cinco sementes de plantas foi examinado contra Bacillus cereus, Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia e Candida albicans usando o método de difusão bem. Estudos de atividade antimicrobiana revelaram alto potencial de atividade de sementes de plantas em pó de Nigella sativa L., Cucurbita pepo, Sesamum radiatum, Trigonella foenum-graecum, Linum usitatissimum com eficiência variável contra cepas microbianas testadas com concentração de 100 mg / ml, exceto Sesamum radiatum com pontuação não efeito. O pó de sementes de T. foenum e N. sativa apresentou a maior zona de inibição (24-20 mm) contra K. pneumonia, seguido por S. aureus (20-18 mm) e C. albicans (15 mm), respectivamente. O pó de cinco sementes de plantas exibiu efeitos bacteriostáticos e bactericidas com MIC's 20 e MBC 40 mg / ml contra K. pneumonia, enquanto MIC's 40 e MBC 60 mg / ml contra S. aureus. Os resultados deste estudo indicaram que os pós de sementes de plantas apresentam promissoras atividades antimicrobianas e suas potenciais aplicações em processos alimentícios. Ele poderia ser utilizado como alternativa medicinal natural em vez de substância química.

Human infection with Pseudoterranova cattani by ingestion of "ceviche" in Buenos Aires, Argentina / Infección humana con Pseudoterranova cattani por ingesta de ceviche en Buenos Aires, Argentina

Abstract Anisakidosis is an infection caused by larval nematodes that belong to several genera within the family Anisakidae. Anisakidosis has about 20000 cases reported to date, the vast majority (90%) in Japan. Usually, human anisakiosis is more common than human pseudoterranovosis in Japan and Europe, although in North America Pseudoterranova spp. is the more frequent. Cases of human pseudoterranovosis have been reported from Chile and Peru. We here report one of the few cases of human infection by Pseudoterranova cattani by consumption of ``ceviche'' in Buenos Aires, Argentina.

Resumen La anisakidosis es una infección por larvas de nematodos que pertenecen a varios géneros dentro de la familia Anisakidae. Se han registrado aproximadamente 20.000 casos hasta la fecha, la mayoría (90%) en Japón. En Europa y Japón la anisakidosis es más frecuente en el humano que la pseudoterranovosis. En cambio, en América del Norte es más frecuente la infección humana por Pseudoterranova spp. También se han informado casos de pseudoterranovosis humana en Chile y en Perú. Informamos uno de los pocos casos de infección humana por Pseudoterranova cattani por consumo de ceviche en Buenos Aires, Argentina.

Nasopharyngeal linguatulosis or halzoun syndrome: clinical diagnosis and treatment

SUMMARY Halzoun syndrome, also known as nasopharyngeal linguatulosis, is a rare entity that is mostly prevalent in Eastern Mediterranean countries. The consumption of raw ovine liver and lymph nodes infested with Linguatula serrata nymphs remains a major cause of the nasopharyngeal symptoms and discomfort associated with the disease. Halzoun syndrome is a clinical diagnosis based on history and presentation. Treatment of this disease is still debated; however, our experience reveals that alcohol gargle can be a good option. Proper counselling on the hazards of eating raw liver in endemic areas is needed. Moreover, physicians should be aware of the sequence of events in the disease in order not to delay or miss the diagnosis. This communication presents a rare Lebanese case of Halzoun syndrome that offers medical implications in the clinical diagnosis and treatment of the nasopharyngeal symptoms of this syndrome, with a review of the literature.

RESUMO Esta comunicação apresenta um caso libanês raro de síndrome de Halzoun que oferece implicações médicas no diagnóstico clínico e no tratamento dos sintomas nasofaríngeos desta síndrome, com uma revisão da literatura. A síndrome de Halzoun, também conhecida como linguatulose nasofaríngea, é uma entidade rara predominante nos países do Mediterrâneo Oriental. O consumo de linfonodos ovinos e linfáticos ovinos infestados com ninfas Linguatula serrata continua a ser uma das principais causas dos sintomas nasofaríngeos e do desconforto associado à doença. A síndrome de Halzoun é um diagnóstico clínico baseado na história e na apresentação. O tratamento dessa doença ainda é debatido; no entanto, nossos resultados revelam que o gargarismo de álcool pode ser uma boa opção. É necessário um aconselhamento adequado sobre os perigos de comer fígado cru em áreas endêmicas. Além disso, os médicos devem estar cientes da sequência de eventos na doença, a fim de não atrasar ou perder o diagnóstico.

Description of an oral Chagas disease outbreak in Venezuela, including a vertically transmitted case

We describe the eleventh major outbreak of foodborne Trypanosoma cruzi transmission in urban Venezuela, including evidence for vertical transmission from the index case to her fetus. After confirming fetal death at 24 weeks of gestation, pregnancy interruption was performed. On direct examination of the amniotic fluid, trypomastigotes were detected. T. cruzi specific-polymerase chain reaction (PCR) also proved positive when examining autopsied fetal organs. Finally, microscopic fetal heart examination revealed amastigote nests. Acute orally transmitted Chagas disease can be life threatening or even fatal for pregnant women and unborn fetuses owing to vertical transmission. There is therefore an urgent need to improve national epidemiologic control measures.

Doenças parasitárias associadas ao consumo de pescado no brasil: incidência e epidemiologia / Parasitic diseases associated with fish consumption in Brazil: incidence and epidemiology

A ocorrência de doenças parasitárias associadas ao consumo de pescado no Brasil geralmente passa desapercebida devido à baixa gravidade de seus sintomas e ao seu pouco conhecimento pelos médicos, inspetores sanitários e consumidores. Mais além, seu estudo é dificultado pela não obrigatoriedade de sua notificação, à escassez e pouca acurácia dos dados estatísticos disponíveis. Este trabalho apresenta uma atualização da incidência e epidemiologia das principais ictiozoonoses parasitárias associadas ao consumo de pescado em nosso país, com base numa minuciosa revisão bibliográfica. O resultado sugere que o perigo potencial destas doenças é alto, tendo em vista a descrição frequente da presença dos parasitas a elas associados em espécies de pescado de importância comercial consumidas no país. Entretanto, os dados disponíveis mostram a ocorrência de um número reduzido de casos, indicando seu baixo risco. A difilobotríase e a fagicolose são as principais ictiozoonoses presentes, ambas descritas recentemente e associadas ao consumo de pescado cru, mal cozido ou processado. A angiostrongilíase surge como uma ictiozoonose negligenciada emergente.(AU)

Nematode infection among ruminants in monsoon climate (Ban-Lahanam, Lao PDR) and its role as food-borne zoonosis / Infecção por nematóides em ruminantes nas monções (Ban-Lahanam, RPD do Laos) como zoonose transmitida por alimento

Trichostrongylids infection has gained significant public health importance since Trichostrongylus spp. infections have been reported in humans in Lao PDR. In this study, gastrointestinal nematodes were identified and the intensity of infections was determined in goats and cattle, which are animals greatly used for meat production in Lahanam Village, Lao PDR. The total number of goats and bovines was 23 and 29, respectively, pertaining to 32 households surveyed in the area. Feacal samples were randomly collected from 14 goats and 11 bovines. Ninety three percent (13/14) of goats and 36% (3/11) of cattle were infected, with an average of 1,728 and 86 eggs per gram of faeces (EPG), respectively. Coproculture showed Trichostrongylus spp. (goats 16%; bovines 48%), Haemonchus spp. (goats 69%; bovines 37%), Cooperia spp. (bovines 8%) and Oesophagostomum spp. (goats 15%; bovines 6%). After performing the necropsy on an adult goat, Trichuris spp. was also found. We confirmed the presence of Oesophagostomum spp., H. contortus and T. colubriformis by morphology and DNA sequencing analysis of the ITS region of rDNA. Due to interactions between humans and goats in Lahanam Village and high EPG results, the diagnosis of species and the intensity of gastrointestinal nematode infection in these animals are important public-health issues. Other ruminant parasites, such as Oesophagostomum and Haemonchus, found in caprines and bovines, are reported to be causes of zoonosis and their presence in humans should be investigated in future field surveys in this area.

Infecção por tricostrongilídeos ganhou significativa importância para a saúde pública, desde que infecções por Trichostrongylus spp. foram relatadas em humanos no Laos. Neste estudo, determinou-se a intensidade de verminoses gastrintestinais em caprinos e bovinos, importantes animais de produção na região de Lahanam Village, RPD do Laos. O número total de caprinos e bovinos foi 23 e 29, respectivamente, nas 32 famílias estudadas. Amostras de fezes foram coletadas, aleatoriamente, de 14 caprinos e 11 bovinos. Noventa e três por cento (13/14) dos caprinos e 36% (3/11) dos bovinos encontraram-se parasitados, com uma média de 1728 e 86 ovos por grama de fezes (OPG), respectivamente. Pela coprocultura, identificou-se Trichostrongylus spp. (caprinos 16%; bovinos48%), Haemonchus spp. (caprinos 69%; bovinos 37%), Cooperia spp. (bovinos 8%) e Oesophagostomum spp. (caprinos 15%; bovinos 6%). A necropsia de um caprino registrou também a presença de formas adultas de Trichuris spp. Morfologicamente e por análise do sequenciamento da região ITS do rDNA, foi confirmada a presença de Oesophagostomum spp., H. contortus e T. colubriformis. Devido às interações entre seres humanos e caprinos, em Lahanam Village, o alto OPG demonstrando o grau elevado de infecção por nematóides gastrintestinais nesses animais e a comprovação de espécies causadoras de zoonoses, aponta-se uma importante questão de saúde pública. Outros parasitos de ruminantes, como Oesophagostomum e Haemonchus, encontrados nos caprinos e bovinos estudados, são também relatados como agentes de zoonose, e sua presença em seres humanos deve ser investigada em futuras pesquisas de campo no local.

Detection of Cryptosporidium parvum in Environmental Soil and Vegetables

Cryptosporidium parvum is a zoonotic protozoan parasite that causes cryptosporidial enteritis. Numerous outbreaks of cryptosporidiosis have been reported worldwide. Cryptosporidium is transmitted to hosts via consumption of contaminated water and food but also by direct contact with contaminated soil or infected hosts. The present study investigated farm soil collected from 34 locations along the western Korean peninsula and 24 vegetables purchased from local grocery markets in Seoul. The soil and vegetable samples were examined by real-time polymerase chain reaction (qPCR) to estimate the risk of infection. Eleven of 34 locations (32.4%) and 3 of 24 vegetable samples (12.5%) were contaminated with Cryptosporidium parvum, as confirmed by TaqI enzyme digestion of qPCR products and DNA sequencing. It is suggested that Cryptosporidium infection can be mediated via farm soil and vegetables. Therefore, it is necessary to reduce contamination of this organism in view of public health.

Dermatosis de origen alimentario al regreso de un viaje: gnathostomiasis / Foodborne dermatosis after traveling: gnathostomiasis

Se describe el caso de un paciente de 32 años de edad, residente en Buenos Aires, con manifestaciones dermatológicas compatibles con gnathostomiasis. Había realizado un viaje a Colombia en el mes previo a la aparición de la sintomatología. Allí consumió cebiche (pescado crudo marinado en jugo de limón) en reiteradas oportunidades. El cuadro clínico se presentó como paniculitis eritematosa y migratoria acompañada de eosinofilia sanguínea. Se le realizó biopsia cutánea de una lesión y el diagnóstico anatomopatológico fue "paniculitis eosinofílica". La tríada de paniculitis migratoria, eosinofilia sanguínea y el consumo de pescado crudo durante el viaje a Colombia fue sugestiva de gnathostomiasis por lo que se indicó tratamiento con ivermectina con buena evolución inicial y recaída posterior. Se realizó un nuevo tratamiento con la misma droga con buena evolución y sin recaídas durante tres años de seguimiento. La afección dermatológica es un motivo frecuente de consulta al regreso de un viaje, y representa la tercera causa de morbilidad en viajeros. Es muy importante el reconocimiento de las enfermedades que pueden tener manifestación cutánea, ya que muchas de ellas son potencialmente graves y pueden poner en riesgo la vida del paciente si no son oportunamente diagnosticadas y tratadas.

We describe a case of a 32-year-old man, resident in Buenos Aires, with dermatologic manifestations compatible with gnathostomiasis. The patient had traveled to Colombia in the month prior to the onset of symptoms. There, he repeatedly ate ceviche (raw fish marinated in lemon juice). He presented with an erythematous migratory panniculitis accompanied by eosinophilia. He underwent skin biopsy of a lesion and pathological diagnosis was "eosinophilic panniculitis". The triad of migratory panniculitis, eosinophilia and consume of raw fish during the trip to Colombia was suggestive of gnathostomiasis. Ivermectin treatment started out with good initial response but subsequent relapse. We performed a new treatment with the same drug with good results and no relapses during three years of follow up. The dermatological disease is common upon return from a trip, and is the third leading cause of morbidity in travelers. It is very important to recognize cutaneous manifestations of disease as many of them are potentially serious and may compromise the patient's life if not promptly diagnosed and treated.

Foodborne Trematode Metacercariae in Fish from Northern Vietnam and Their Adults Recovered from Experimental Hamsters

The prevalence of foodborne trematode (FBT) metacercariae was investigated in fish from 2 localities of northern Vietnam in 2004-2005. Freshwater fish (9 species) were collected from local markets in Hanoi City (n=76) and Nam Dinh Province (n=79), and were examined for FBT metacercariae using the artificial digestion technique. Adult flukes were obtained from hamsters experimentally infected with the metacercariae at day 8 post-infection. Three (Haplorchis pumilio, Centrocestus formosanus, and Procerovum varium) and 6 (Haplorchis taichui, H. pumilio, C. formosanus, P. varium, Stellantchasmus falcatus, and Heterophyopsis continua) species of FBT metacercariae were detected in the 2 regions, respectively. Overall, among the positive fish species, H. pumilio metacercariae were detected in 104 (80.0%) of 130 fish examined (metacercarial density per infected fish; 64.2). C. formosanus metacercariae were found in 37 (40.2%) of 92 fish (metacercarial density; 14.7). P. varium metacercariae were detected in 19 (63.3%) of 30 fish (Anabas testudineus and Mugil cephalus) (metacercarial density; 247.7). S. falcatus metacercariae were found in all 10 M. cephalus examined (metacercarial density; 84.4). H. continua metacercariae (2 in number) were detected in 1 fish of Coilia lindmani. Morphologic characteristics of the FBT metacercariae and their experimentally obtained adults were described. The results have demonstrated that various FBT species are prevalent in northen parts of Vietnam.

Mecanismos alternativos de transmissão do Trypanosoma cruzi no Brasil e sugestões para sua prevenção / Alternative transmission mechanisms of Trypanosoma cruzi in Brazil and proposals for their prevention

INTRODUÇÃO: Com o avanço no controle da transmissão vetorial e por transfusão sanguínea da doença de Chagas, as formas alternativas de transmissão ganharam relevância. Este artigo de opinião discute a importância de cada uma dessas modalidades e as medidas para sua prevenção. MÉTODOS: Foi realizada uma revisão bibliográfica sobre os mecanismos de transmissão do Trypanosoma cruzi através de modalidades alternativas, vigentes no Brasil, e as possibilidades de sua prevenção. Foram consultadas as bases de dados PubMed e BVS. RESULTADOS: Foram identificadas 25 publicações que discutiam as modalidades alternativas de transmissão da doença de Chagas. CONCLUSÕES: A transmissão oral, pela ingestão de alimentos contaminados, tem sido o modo de transmissão predominante no Brasil nos últimos anos. Os demais modos alternativos de transmissão são de ocorrência menos frequente. É importante conhecer essas ocorrências, sobretudo agora que a veiculação vetorial do parasita está controlada. Conforme os conhecimentos atuais foram apresentadas medidas preventivas, de acordo com cada uma das situações consideradas.

INTRODUCTION: Following advances in the control of vector and blood transfusion transmission of Chagas disease, alternative mechanisms of transmission have become more relevant. This article discusses the importance of each one of these alternative mechanisms and the measures to prevent them. METHODS: A review was conducted of the scientific literature concerning alternative transmission mechanisms of Trypanosoma cruzi occurring in Brazil and the measures to prevent them. PubMed and BVS databases were consulted. RESULTS: Twenty-five publications describing alternative mechanisms of transmission of Chagas disease were identified. CONCLUSIONS: Oral transmission, through ingestion of contaminated food items has been the most frequent mode of transmission in Brazil in recent years. Other alternative mechanisms of transmission occur less frequently. It is important to understand these occurrences, especially now that vector transmission of the parasite is under control. Preventive measures have been presented, according to each of the situations considered, in line with current knowledge.

Nuevos casos de infección humana por diphyllobothrium pacificum Nybelin 1931, Margolis 1956 en Chile y su probable relación con el fenómeno de El Niño 1975-2000 / New cases of diphyllobothrium pacificum Nybelin 1931, Margolis 1956 human infection in north of Chile probably related with El Niño phenomenon 1975-2000

The effecto of El Niño/ENSO on terrestrial atmosphere appears to be extremelly clear. However there are outstanding evidences showing its effect on humans and their activities. In fact, prevalence of some parasitic infections have increased during El Niño phenomenon. The reasons for that are the migrations of sylvatic mammals, fishes and birds as well as by environmental contamination. In this report, we show evidence respect of new cases of human infection by Diphyllobothrium pacificum clearly associated with a cyclic manifestation of El Niño in the Chilean Pacific coast during 1975-2000

Difilobotriasis humana por diphyllobothrium pacificum: un nuevo caso en Antofagasta, norte de Chile / Diphyllobothrium pacificum human infection: report of one case

We report a 26 years old asymptomatic female that expelled spontaneously a 39 proglottid strobila. The taxonomic study of proglottids and eggs found in the stool examination concluded that the patient was infected by Diphyllobothrium pacificum. This infection was probably acquired by the ingestion of raw fish (Sciaena deliciosa) with lemon in a traditional plate called "cebiche". She was treated with a single dose of praziquantel in a dose of 10 mg/kg body weight. After 24 h of treatment there were no scolices on feces. The patient did not have anemia. All eight family members studied, did no have the infection. A follow up stool examination three months later remained negative