Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 8 de 8
Filter
2.
Rev. argent. microbiol ; 41(4): 232-236, oct.-dic. 2009. tab
Article in English | LILACS | ID: lil-634638

ABSTRACT

Infant botulism is an intestinal toxemia caused principally by Clostridium botulinum. Since the infection occurs in the intestinal tract, numerous food products have been investigated for the presence of C. botulinum and its neurotoxins. In many countries, people use linden flower (Tilia spp) tea as a household remedy and give it to infants as a sedative. Therefore, to help provide a clear picture of this disease transmission, we investigated the presence of botulinum spores in linden flowers. In this study, we analyzed 100 samples of unwrapped linden flowers and 100 samples of linden flowers in tea bags to determine the prevalence and spore-load of C. botulinum. Results were analyzed by the Fisher test. We detected a prevalence of 3% of botulinum spores in the unwrapped linden flowers analyzed and a spore load of 30 spores per 100 grams. None of the industrialized linden flowers analyzed were contaminated with botulinum spores. C. botulinum type A was identified in two samples and type B in one sample. Linden flowers must be considered a potential vehicle of C. botulinum, and the ingestion of linden flower tea can represent a risk factor for infant botulism.


El botulismo del lactante es una toxiinfección causada, principalmente, por Clostridium botulinum. Debido a que esta infección ocurre en el tracto intestinal, la presencia de esta bacteria y sus neurotoxinas ha sido investigada en numerosos alimentos. En muchos países se utiliza el té de tilo (Tilia spp.) como sedante natural, el que se administra incluso a los lactantes. A fin de contribuir al esclarecimiento de la transmisión de esta enfermedad, se investigó la prevalencia y la carga de esporas botulínicas en esta hierba. Se analizaron 100 muestras de tilo comercializado a granel y 100 muestras de tilo industralizado en “saquitos”. Los resultados de prevalencia fueron analizados por el test de Fisher y la carga de esporas por la técnica del número más probable. Se halló una prevalencia de esporas de C. botulinum del 3% en el tilo comercializado a granel, con una carga de 30 esporas/100 g de hierba. En tanto, ninguna de las muestras en saquitos acusó la presencia del patógeno. Se identificaron tres cepas de C. botulinum, dos tipo A y una tipo B. En virtud de estos resultados, el tilo podría considerarse un potencial vehículo de esporas de C. botulinum y la administración de sus infusiones a menores y lactantes, un riesgo para la transmisión de la enfermedad.


Subject(s)
Animals , Humans , Infant , Mice , Beverages/adverse effects , Botulism/transmission , Clostridium botulinum/isolation & purification , Food Microbiology , Flowers/microbiology , Spores, Bacterial/isolation & purification , Tilia/microbiology , Argentina , Biological Assay , Beverages/microbiology , Botulinum Toxins, Type A/analysis , Botulinum Toxins/analysis , Clostridium botulinum/physiology , Dust , Food Packaging , Hot Temperature , Medicine, Traditional/adverse effects , Phytotherapy/adverse effects
3.
Rev. argent. microbiol ; 41(2): 112-116, abr.-jun. 2009. graf
Article in English | LILACS | ID: lil-634623

ABSTRACT

The objective of this study was to examine the alkalithermophilic actinomycete communities in the subtropical environment of Jujuy, Argentina, characterized by sugarcane crops. Laceyella putida, Laceyella sacchari, Thermoactinomyces intermedius, Thermoactinomyces vulgaris and Thermoflavimicrobium dichotomicum were isolated on the media with novobiocin, from sugar cane plants and renewal rhizospheres, and grass and wood soils. Soil pH was almost neutral or lightly alkaline, except for grass soil acidified by lactic liquor. A smaller number of actinomycetes was found on the living plants and bagasse (recently obtained or stored according to the Ritter method) with respect to decomposed leaves on the soil. Thermophilic species of Laceyella, Thermoactinomyces, Thermoflavimicrobium, Saccharomonospora, Streptomyces and Thermononospora were isolated on the media without novobiocin, from composted sugar cane residues. Air captured near composted bagasse piles, contained alkalithermophilic actinomycete spores.


El objetivo de este trabajo fue examinar los actinomicetos termoalcalófilos presentes en el área subtropical de Jujuy, Argentina, caracterizada por el cultivo de la caña de azúcar. Se aislaron en medio con novobiocina las especies Laceyella putida, Laceyella sacchari, Thermoactinomyces intermedius, Thermoactinomyces vulgaris y Thermoflavimicrobium dichotomicum a partir de la rizósfera de plantas y de renuevos de caña de azúcar, así como de suelos de pastura y de monte natural. El pH de los suelos era casi neutro a ligeramente alcalino, excepto en un solo caso en que el suelo estaba acidificado por licor láctico. El número de actinomicetos encontrados sobre los tejidos vivos y en el bagazo recién obtenido o almacenado según el método de Ritter fue pequeño en comparación con el observado sobre las hojas en descomposición. L. sacchari predominó respecto de T. vulgaris. Se aislaron especies termoalcalófilas de Laceyella, Thermoactinomyces, Thermoflavimicrobium, Saccharomonospora, Streptomyces y Thermononospora de los residuos compostados de caña de azúcar utilizando medio sin novobiocina. El aire capturado cerca de pilas de bagazo en compostaje contenía esporos de estos organismos.


Subject(s)
Humans , Actinobacteria/isolation & purification , Plants/microbiology , Soil Microbiology , Air Microbiology , Argentina , Actinobacteria/classification , Actinobacteria/metabolism , Actinobacteria/physiology , Cellulose , Climate , Hot Temperature , Hydrogen-Ion Concentration , Pneumoconiosis , Plant Leaves/microbiology , Saccharum/microbiology , Spores, Bacterial/isolation & purification
4.
EMHJ-Eastern Mediterranean Health Journal. 2009; 15 (1): 149-156
in English | IMEMR | ID: emr-157309

ABSTRACT

Outbreaks of Bacillus anthracis in animals are repeatedly reported in the Islamic Republic of Iran. In this study soil samples were analysed from endemic regions of the country, and B. anthracis isolates were identified by classical bacteriological and biochemical methods. A multiplex polymerase chain reaction [PCR] assay was also developed as an alternative for identification of isolates, and was shown to be a rapid, sensitive and specific diagnostic assay. The results confirmed that 25 samples contained B. anthracis, of which 9 were virulent for mice and guinea pigs. This study suggests that multiplex PCR can be used as a reliable alternative for the detection of B. anthracis spores


Subject(s)
Animals , Polymerase Chain Reaction , Soil Microbiology , Sensitivity and Specificity , Mice , Guinea Pigs , Spores, Bacterial/isolation & purification
5.
Article in English | IMSEAR | ID: sea-51376

ABSTRACT

Bar soap from 18 different dental clinics were investigated for microbial contamination, while it was "in-use". Of the 32 samples obtained from the bar soap, 100% yielded positive culture. A total of 8 different genera of organisms were isolated. Each bar soap was found to harbor 2-5 different genera of micro organisms. Heavily used soap had more micro organisms compared to less used soap. The microbial load of the "in-use" bar soap constituted a mixed flora of gram positive, gram negative, aerobes, anaerobes, and fungi. The results indicate that the bar soap under "in-use" condition is a reservoir of microorganisms and handwashing with such a soap may lead to spread of infection.


Subject(s)
Aspergillus niger/isolation & purification , Bacillus/isolation & purification , Bacteria/classification , Candida/isolation & purification , Colony Count, Microbial , Corynebacterium/isolation & purification , Escherichia coli/isolation & purification , Hand Disinfection , Humans , Klebsiella/isolation & purification , Propionibacterium acnes/isolation & purification , Soaps , Spores, Bacterial/isolation & purification , Staphylococcus/classification , Water Microbiology
6.
Parasitol. día ; 21(3/4): 119-22, jul.-dic. 1997. ilus
Article in English | LILACS | ID: lil-210530

ABSTRACT

The first case of microspotidiosis in Central America is describes in en AIDS patient from Costa Rica. Electronic microscopy studies indicate that the spores were not included in a parasitophorous vacuole, but they are in direct contact with the cell cytoptasm. Sporogonic proliferative plasmodial forms presence and localization of the polar tubes in the anterior region of the spore, confirmed the specie Enterocytozoon bieneusi as the cause of this microsporidian infection


Subject(s)
Humans , Male , Adult , AIDS-Related Opportunistic Infections/parasitology , Microsporidia/isolation & purification , Microsporidiosis/parasitology , Costa Rica , Feces/parasitology , Intestinal Diseases, Parasitic , Microscopy, Electron , Microsporidia/drug effects , Microsporidia/pathogenicity , Microsporidiosis/drug therapy , Spores, Bacterial/isolation & purification
7.
Rev. argent. microbiol ; 29(3): 147-51, jul.-oct. 1997.
Article in Spanish | LILACS | ID: lil-223416

ABSTRACT

Se examinaron 177 muestras de miel para la detección de Clostridium botulinum; 68 procedentes del comercio, 95 de apiarios envasados en origen, 8 de apiarios rurales para consumo familiar y 6 de establecimientos fraccionadores en las provincias de San Luis y Mendoza. Utilizando el método de dilución-centrifugación, se detectó C. botulinum tipo A en 2 muestras de apiarios rurales de San Luis (1,1 o/o); en una de ellas se logró la recuperación de la cepa y el recuento de esporas fue de 55/g de miel. Si bien el porcentaje de positividad fue inferior al de otros países, se recomienda no suministrar miel a niños menores de 1 año como prevención de botulismo del lactante


Subject(s)
Humans , Infant , Botulism/diagnosis , Clostridium botulinum/isolation & purification , Honey/analysis , Spores, Bacterial/isolation & purification , Botulinum Toxins/isolation & purification
8.
Acta pediátr. Méx ; 16(3): 131-4, mayo-jun. 1995. ilus
Article in Spanish | LILACS | ID: lil-173801

ABSTRACT

En el presente trabajo, se revisa la literatura y se presenta un caso pediátrico de gastroenteritis por Enterocytozoon bieneusi en un paciente del sexo femenino de 14 meses de edad, sin historia clínica significativa, excepto desnutrición. La paciente fue estudiada por el Servicio de Parasitología del Hospital Pediátrico de Iztacalco, de la Ciudad de México, debido a un cuadro de diarrea crónica. En las muestras fecales de la paciente, se pudo identificar, mediante microscopia de luz, de microscopia de contraste interferencia diferencial según Nomarski, usando tinciones de Ziehl Neelsen modificado y Giemsa, La presencia de esporas de E. bieneusi. La presencia de otros parásitos como helmintos, protozoos, levaduras y bacterias enteropatégenas fueron excluidas mediante examen directo en fresco de materia fecal y coprocultivo


Subject(s)
Infant , Humans , Female , Amikacin/administration & dosage , Trimethoprim, Sulfamethoxazole Drug Combination/therapeutic use , Diarrhea, Infantile/etiology , Gastroenteritis/physiopathology , Intestinal Diseases, Parasitic/diagnosis , Intestine, Small/parasitology , Microscopy , Microsporida/pathogenicity , Microsporidiosis/parasitology , Opportunistic Infections/etiology , Spores, Bacterial/isolation & purification , Staining and Labeling/statistics & numerical data
SELECTION OF CITATIONS
SEARCH DETAIL