ABSTRACT
Se ha estudiado la microbiota autóctona y alóctona del agua mineral del Balneario Villa de Olmedo (Valladolid). El número total de microorganismos en el agua ha sido de 4,5 x 103/mL y el número de bacterias viables heterótrofas menor de 5 ufc/mL. No se han encontrado indicadores fecales ni microorganismos patógenos por lo que estas aguas cumplen con la normativa española de aguas de consumo. La microbiota autóctona está constituida, principalmente, por bacilos Gram negativos de la clase Gammaproteobacteria (68,5%) y, en menor proporción, por cocos Gram positivos (14,3%). La especie más frecuente ha sido Pseudomonas stutzeri (37,2%). Se han detectado bacterias con actividades amonificantes, nitrificantes, proteolíticas y amilolíticas en 100 mL de agua, que contribuyen a la autodepuración del agua
The autochthon and alocthon microbiota of the mineral water of the Villa de Olmedo Spa have been studied. The total number of microorganisms in the water was of 4.5 x103/mL and the number of heterotrophic viable bacteria was lower than 5 cfu/mL. Neither faecal indicators nor pathogenic microorganisms were found; therefore these waters comply with the Spanish regulations on drinking water. The autochthon microbiota mostly belongs to Gram negative bacilli, from the Class Gammaproteobacteria (68.5%) and in smaller percentage to the Gram positive cocci (14.3%). The most frequently found species was Pseudomonas stutzeri. Moreover ammonifying, nitrifiying, proteolytic and amylolytic bacteria have been detected in 100 mL of water, all of them involved in self-purification process of water
Subject(s)
Mineral Waters/analysis , Natural Springs/microbiology , 51793/methods , Water Purification , Biodiversity , Aquatic Microorganisms/analysis , Aquatic Microorganisms/methods , 51426 , Microbiota , Microbiota/physiology , Water Microbiological Characteristics/analysis , Water Microbiological Characteristics/methods , Bacteria, Aerobic/physiology , Bacteria, Aerobic/chemistry , Bacteria, Aerobic/classificationABSTRACT
The Iberian Pyrite Belt, located in Southwestern Spain, represents one of the worlds largest accumulations of mine wastes and acid mine drainages. This study reports the comparative microbial ecology of the water column of Nuestra Señora del Carmen acid pit lake with the extreme acidic Río Tinto basin. The canonical correspondence analysis identified members of the Leptospirillum, Acidiphilium, Metallibacterium, Acidithiobacillus, Ferrimicrobium and Acidisphaera genera as the most representative microorganisms of both ecosystems. The presence of archaeal members is scarce in both systems. Only sequences clustering with the Thermoplasmata have been retrieved in the bottom layer of Nuestra Señora del Carmen and one station of Río Tinto. Although the photosynthetically active radiation values measured in this lake upper layer were low, they were sufficient to activate photosynthesis in acidophilic microorganisms. All identified photosynthetic microorganisms in Nuestra Señora del Carmen (members of the Chlamydomonas, Zygnemopsis and Klebsormidium genera) are major members of the photosynthetic eukaryotic community characterized in Río Tinto basin. This study demonstrates a close relationship between the microbial diversity of Nuestra Señora del Carmen pit lake and the diversity detected in the Río Tinto basin, which underlain the influence of the shared mineral substrates in the microbial ecology of these ecosystems (AU)
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Subject(s)
Female , Humans , Male , Aquatic Microorganisms/methods , 51426 , Water Microbiological Characteristics/methods , Lakes/microbiology , Rivers/microbiology , Polymerase Chain Reaction/methods , Spectrophotometry, Atomic , Water Microbiology/standards , Iron/toxicity , Ecosystem , Multivariate AnalysisABSTRACT
La calidad microbiológica del agua para los tratamientos de hemodiálisis en los pacientes con enfermedad renal crónica es de vital importancia, con el fin de evitar o reducir el riesgo por infección al paciente, ya que la sangre de un paciente se pone en contacto con 20 000 a 25 000 litros de agua por año a través de una membrana. Hoy en día existen muchas discrepancias en las normativas y guías para la evaluación del agua de hemodiálisis, especialmente con respecto a los parámetros microbiológicos los que se encuentran en fase de armonización y son de crucial significado actual. El objetivo de este trabajo es aportar el enfoque actual existente para la evaluación de la calidad microbiológica del agua de hemodiálisis a nivel internacional y nacional y su incorporación en la vigilancia sanitaria nacional
The microbiological quality of haemodialysis water is vital for the treatment of patients suffering renal chronic disease, in order to avoid or reduce the risk of infection, since a patient's blood gets in contact with 20 000 to 25 000 litres of water per year through a membrane. There are many controversies at present regarding the regulations and guidelines for the evaluation of haemodialysis water, particularly the microbiological parameters which are undergoing a harmonization process and are highly significant. The paper was aimed at providing the current approach for the evaluation of the microbiological quality of haemodialysis water at domestic and international levels and the incorporation of such approach into the national health surveillance
Subject(s)
Water Microbiological Characteristics/methods , Renal Dialysis/standardsABSTRACT
La calidad microbiológica del agua para los tratamientos de hemodiálisis en los pacientes con enfermedad renal crónica es de vital importancia, con el fin de evitar o reducir el riesgo por infección al paciente, ya que la sangre de un paciente se pone en contacto con 20 000 a 25 000 litros de agua por año a través de una membrana. Hoy en día existen muchas discrepancias en las normativas y guías para la evaluación del agua de hemodiálisis, especialmente con respecto a los parámetros microbiológicos los que se encuentran en fase de armonización y son de crucial significado actual. El objetivo de este trabajo es aportar el enfoque actual existente para la evaluación de la calidad microbiológica del agua de hemodiálisis a nivel internacional y nacional y su incorporación en la vigilancia sanitaria nacional(AU)
The microbiological quality of haemodialysis water is vital for the treatment of patients suffering renal chronic disease, in order to avoid or reduce the risk of infection, since a patient's blood gets in contact with 20 000 to 25 000 litres of water per year through a membrane. There are many controversies at present regarding the regulations and guidelines for the evaluation of haemodialysis water, particularly the microbiological parameters which are undergoing a harmonization process and are highly significant. The paper was aimed at providing the current approach for the evaluation of the microbiological quality of haemodialysis water at domestic and international levels and the incorporation of such approach into the national health surveillance(AU)
