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1.
J Environ Manage ; 319: 115647, 2022 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-35803069

RESUMO

Olive mill wastewater (OMW) resulting from the olive oil extraction process is usually disposed of in evaporation ponds where it concentrates generating a sludge that pollutes the ponds nearby area. In this study, four bio-treatments were applied for the in-situ bioremediation and valorization of OMW sludge: Landfarming, phytoremediation, composting and vermicomposting. In all cases, the OMW sludge was added with organic residues (mushroom compost, rabbit manure, and chicken manure). The bio-treatments were carried out in duplicate, inoculated and non-inoculated, to determine the effect of a specialized fungal consortium (Aspergillus ochraceus H2 and Scedosporium apiospermum H16) on the efficacy of the bio-treatments. The evaluation of chemical parameters, toxicity, and functional microbial biodiversity revealed that the four techniques depleted the toxicity and favored the stimulation of functional microbiota. Landfarming and phytoremediation allowed the decontamination and improvement of soils. Composting and vermicomposting also offered high-quality products of agronomic interest. Inoculation improved the bioremediation effectiveness. Biological treatments are effective for the safe recovery of contaminated OMW sludge into high-quality services and products.


Assuntos
Olea , Esgotos , Animais , Resíduos Industriais/análise , Esterco , Olea/química , Azeite de Oliva , Lagoas , Coelhos , Esgotos/microbiologia , Eliminação de Resíduos Líquidos/métodos , Águas Residuárias
2.
J Environ Manage ; 226: 408-415, 2018 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-30142502

RESUMO

In the Mediterranean countries, there is an increasing production of date palm wastes (Phoenix dactylifera L.), not only due to the raising production of date palm fruits, but also derived from the maintenance of urban and peri-urban green areas, especially in those affected by red palm weevil (Rhynchophorus ferrugineus). The management of this increasing volume of green wastes usually concludes with a controlled disposal that implies an important loss of resources, in terms of organic matter, nutrients and energy. In addition, the rise of wastewater generation and the incentive of the wastewater treatment processes have derived in an increase of the amount of the sludge produced, which makes difficult its management. This work studies the feasibility of co-composting palm wastes with sludge from the urban and agri-food sectors as alternative treatment to manage these organic waste streams and to obtain added-value compost. For this, four mixtures (P1, P2, P3 and P4) were prepared using as main component palm leave waste (PL) mixed with different types of sludge. In the piles P1, P2 and P3, sewage sludge (SS) was used as co-composting agent, while agri-food sludge (AS) was used in P4. Throughout composting, the thermal profile of the composting piles was assessed, as were physical, chemical, physico-chemical and maturity parameters. In addition, the changes in water-soluble organic matter were assessed using chemical analytical methods and the excitation-emission matrix (EEM) fluorescence spectroscopy. The results obtained showed the viability of the co-composting process to obtain end-products with adequate maturity degree and physical characteristics for their potential use as substrates, except for the salt contents that can limit their use in some agricultural sectors.


Assuntos
Compostagem , Phoeniceae , Esgotos , Agricultura , Biomassa , Solo
3.
Environ Pollut ; 333: 122027, 2023 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-37364751

RESUMO

This work evaluates the effect of agricultural plastic waste (APW) in two particle sizes, microplastic and film debris, and subjected to a pre-treatment by exposure to UV-C, in the development of the vermicomposting process. Eisenia fetida health status and metabolic response and the vermicompost quality and enzymatic activity were determined. The environmental significant of this study is mainly related to how can affect plastic presence (depending on plastic type, size and/or if it is partially degraded) not only to this biological process of organic waste degradation, but also to the vermicompost characteristics, since these organic materials will be reintroduced in the environment as organic amendments and/or fertilizers in agriculture. The plastic presence induced a significant negative effect in survival and body weight of E. fetida with an average decrease of 10% and 15%, respectively, and differences on the characteristics of the vermicomposts obtained, mainly related with NPK content. Although the plastic proportion tested (1.25% f. w.) did not induce acute toxicity in worms, effects of oxidative stress were found. Thus, the exposure of E. fetida to AWP with smaller size or pre-treated with UV seemed to induce a biochemical response, but the mechanism of oxidative stress response did not seem to be dependent on the size or shape of plastic fragments or pre-treated plastic.


Assuntos
Esterco , Oligoquetos , Animais , Microplásticos/metabolismo , Oligoquetos/metabolismo , Plásticos/toxicidade , Plásticos/metabolismo , Solo/química , Agricultura
4.
Nat Ecol Evol ; 6(3): 297-306, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35145268

RESUMO

The Black Death (1347-1352 CE) is the most renowned pandemic in human history, believed by many to have killed half of Europe's population. However, despite advances in ancient DNA research that conclusively identified the pandemic's causative agent (bacterium Yersinia pestis), our knowledge of the Black Death remains limited, based primarily on qualitative remarks in medieval written sources available for some areas of Western Europe. Here, we remedy this situation by applying a pioneering new approach, 'big data palaeoecology', which, starting from palynological data, evaluates the scale of the Black Death's mortality on a regional scale across Europe. We collected pollen data on landscape change from 261 radiocarbon-dated coring sites (lakes and wetlands) located across 19 modern-day European countries. We used two independent methods of analysis to evaluate whether the changes we see in the landscape at the time of the Black Death agree with the hypothesis that a large portion of the population, upwards of half, died within a few years in the 21 historical regions we studied. While we can confirm that the Black Death had a devastating impact in some regions, we found that it had negligible or no impact in others. These inter-regional differences in the Black Death's mortality across Europe demonstrate the significance of cultural, ecological, economic, societal and climatic factors that mediated the dissemination and impact of the disease. The complex interplay of these factors, along with the historical ecology of plague, should be a focus of future research on historical pandemics.


Assuntos
Peste , Yersinia pestis , Animais , DNA Antigo , Europa (Continente)/epidemiologia , Humanos , Pandemias/história , Peste/epidemiologia , Peste/história , Peste/microbiologia , Yersinia pestis/genética
5.
J Hazard Mater ; 402: 123481, 2021 01 15.
Artigo em Inglês | MEDLINE | ID: mdl-32736177

RESUMO

During the last two decades, the method most widely used to manage olive mill wastewater (OMW) derived from olive oil production has been its disposal in evaporation ponds. Long-term storage of OMW leads to the accumulation of toxic sediments (OMWS) rich in recalcitrant compounds with phytotoxic and antimicrobial properties, which limit their use for agronomic purpose. The aim of this study was to compare the effect of two in situ bioremediation strategies (composting and a combination of composting followed by vermicomposting) to remove the potential toxicity of the sediments derived from long-term stored OMW. The results obtained showed that the composting method assisted with the earthworms enhanced the depletion of phenolic compounds and OMWS ecotoxicity more than composting, especially during the maturation stage. Moreover, vermicomposting was more effective in the reduction of the OMWS salinity. However, a pre-composting process to the OMWS is necessary prior to vermicomposting to provide the suitable conditions for earthworms survival and activity. Furthermore, the final compost showed a phytostimulating effect. Therefore, these in situ bioremediation strategies can be considered potential tools for decontamination and recovery of long-term stored OMWS in evaporation ponds, which currently poses an unsolved environmental problem.


Assuntos
Compostagem , Olea , Biodegradação Ambiental , Resíduos Industriais/análise , Azeite de Oliva , Lagoas , Eliminação de Resíduos Líquidos , Águas Residuárias
6.
Sci Rep ; 11(1): 15161, 2021 07 26.
Artigo em Inglês | MEDLINE | ID: mdl-34312431

RESUMO

As the south-westernmost region of Europe, the Iberian Peninsula stands as a key area for understanding the process of modern human dispersal into Eurasia. However, the precise timing, ecological setting and cultural context of this process remains controversial concerning its spatiotemporal distribution within the different regions of the peninsula. While traditional models assumed that the whole Iberian hinterland was avoided by modern humans due to ecological factors until the retreat of the Last Glacial Maximum, recent research has demonstrated that hunter-gatherers entered the Iberian interior at least during Solutrean times. We provide a multi-proxy geoarchaeological, chronometric and paleoecological study on human-environment interactions based on the key site of Peña Capón (Guadalajara, Spain). Results show (1) that this site hosts the oldest modern human presence recorded to date in central Iberia, associated to pre-Solutrean cultural traditions around 26,000 years ago, and (2) that this presence occurred during Heinrich Stadial 2 within harsh environmental conditions. These findings demonstrate that this area of the Iberian hinterland was recurrently occupied regardless of climate and environmental variability, thus challenging the widely accepted hypothesis that ecological risk hampered the human settlement of the Iberian interior highlands since the first arrival of modern humans to Southwest Europe.


Assuntos
Migração Humana/história , Animais , Arqueologia , Teorema de Bayes , Carvão Vegetal/história , Clima , Meio Ambiente , Fósseis/história , Sedimentos Geológicos/análise , Fenômenos Geológicos , História Antiga , Humanos , Modelos Biológicos , Pólen/química , Dinâmica Populacional/história , Datação Radiométrica , Espanha , Vertebrados , Madeira/história
7.
Anal Chem ; 82(9): 3537-46, 2010 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-20361775

RESUMO

The surface-enhanced Raman scattering (SERS) effect and sensor and biosensor analyses are widely applied to investigate drug-biomolecule interactions or to detect trace amount of analytes. In this work, surface-enhanced resonance Raman scattering (SERRS) and an electronic tongue system using impedance spectroscopy were brought together, combining sensitivity and structural level information. Taking advantage of the use of layer-by-layer (LbL) films of phospholipids as biological membrane mimetic systems, cardiolipin (CLP) and dipalmitoyl phosphatidyl glycerol (DPPG) were applied as transducers onto Pt interdigitated electrodes forming an array of sensing units. This e-tongue system was able to detect the phenothiazine methylene blue (MB) below nanomolar concentrations. SERRS was applied to investigate the MB molecular arrangement (monomers or aggregates) when in contact with the phospholipids at trace levels of concentration. The key point was the adsorption of Ag nanoparticles (AgNPs) within the phospholipid LbL films. This approach did not compromise the e-tongue performance and allowed the recording of in situ SERRS spectra for the LbL films after immersion into MB aqueous solutions. The detection of MB through SERRS gave similar results to those reported in the literature but now with an unprecedented sensitivity.


Assuntos
Biomimética , Eletrônica , Membranas/química , Análise Espectral Raman/métodos , Limite de Detecção , Análise Espectral Raman/instrumentação , Propriedades de Superfície
8.
Langmuir ; 25(22): 13062-70, 2009 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-19601609

RESUMO

The use of phospholipids as mimetic systems for studies involving the cell membrane is a well-known approach. In this context, the Langmuir and Langmuir-Blodgett (LB) methods are among the main techniques used to produce ordered layers of phospholipids structured as mono- or bilayers on water subphase and solid substrates. However, the difficulties of producing multilayer LB films of phospholipids restrict the application of this technique depending on the sensitivity of the experimental analysis to be conducted. Here, an alternative approach is used to produce LB films containing multilayers of the negative phospholipid dipalmitoylphosphatidylglycerol (DPPG). Inspired by the electrostatic layer-by-layer (LbL) technique, DPPG multilayer LB films were produced by transferring the DPPG Langmuir monolayers from the water subphase containing low concentrations of the cationic polyelectrolyte poly(allylamine hydrochloride) (PAH) onto solid substrates. Fourier transform infrared (FTIR) absorption spectroscopy revealed that the interactions between the NH(3)(+) (PAH) and PO(4)(-) (DPPG) groups might be the main driving forces that allow growth of these LB films. Besides, ultraviolet-visible (UV-vis) absorption spectroscopy showed that the multilayer LB films can be grown in a controlled way in terms of thickness at nanometer scale. Cyclic voltammetry showed that DPPG and PAH are more packed in the LB than LbL films. The latter finding is related to the distinct molecular architecture of the films since DPPG is structured as monolayers in the LB films and multilamellar vesicles in the LbL films. Despite the interaction with PAH, cyclic voltammetry also showed that DPPG retains its biological activity in LB films, which is a key factor since this makes DPPG a suitable material in sensing applications. Therefore, multilayer LB films were deposited onto Pt interdigitated electrodes forming sensing units, which were applied in the detection of a phenothiazine compound [methylene blue (MB)] using impedance spectroscopy. The performance of DPPG in single-layer and multilayer LB films was compared to the performance of sensing unities composed of DPPG in single-layer and multilayer LbL films, showing the importance of both the thickness and the molecular architecture of the thin films. As found in a previous work for LbL films, the high sensitivity reached by these sensing units is intimately related to changes in the morphology of the film as evidenced by the micro-Raman technique. Finally, the interaction between MB and the (DPPG+PAH) LB films was complemented by pi-A isotherms and surface-enhanced resonance Raman scattering (SERRS).


Assuntos
Membranas Artificiais , Fosfatidilgliceróis/química , Fosfolipídeos/química , Modelos Teóricos , Espectroscopia de Infravermelho com Transformada de Fourier , Eletricidade Estática
9.
Environ Sci Pollut Res Int ; 23(17): 17357-69, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27230139

RESUMO

In this work, different analytical techniques (thermal analysis, (13)C cross-polarization magic angle spinning (CPMAS) NMR and Fourier transform infrared (FT-IR) spectroscopy) have been used to study the organic matter changes during the co-composting of pig slurry with cotton gin waste. To ensure the validity of the findings, the composting process was developed in different scenarios: under experimental pilot plant conditions, using the static pile system, and under real conditions on a pig farm, using the turning pile system. Also, the thermal stability index (R1) was determined before and after an extraction with water, to evaluate the effect of eliminating water-soluble inorganic salts on the thermal analysis. The results of the thermal methods showed the degradation of the most labile organic matter during composting; R1 increased during composting in all piles, without any influence of the presence of water-soluble inorganic ions in the sample. The NMR showed a decrease in the abundance of the carbohydrate molecules and an increase in the aliphatic materials during composting, due to a concentration effect. Also, FT-IR spectroscopy was a useful technique to study the trends of polysaccharides and nitrate, as indicators of organic matter transformations during composting.


Assuntos
Espectroscopia de Ressonância Magnética , Esterco/análise , Espectroscopia de Infravermelho com Transformada de Fourier , Animais , Suínos , Temperatura
10.
Br J Pharmacol ; 119(2): 299-302, 1996 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-8886412

RESUMO

1 Intracortical microinjections of neurotensin (NT) selectively decreased intracranial self-stimulation (ICSS) of the medial prefrontal cortex in the rat. 2 To elucidate whether this effect is mediated by NT receptors or by the formation of NT-dopamine complexes, we investigated the effects on ICSS of intracortical microinjections of neurotensin (1-11), an NT fragment that forms extracellular complexes with dopamine but does not bind to NT receptors. 3 We also studied the effects of the peripheral administration of SR 48692, a selective antagonist of NT receptors, on the inhibition of ICSS produced by the intracortical administration of NT. 4 Unilateral microinjections of neurotensin (1-11) at doses of 10, 20 and 40 nmol into the medial prefrontal cortex did not change the basal ICSS rate of this area. 5 The intraperitoneal administration of SR 48692 at doses of 0.08 and 0.16 mg kg-1 30 min before microinjection of 10 nmol of NT into the medial prefrontal cortex, antagonized the inhibition of ICSS produced by the neuropeptide. 6 These results demonstrate that the inhibitory effect of NT on ICSS is mediated by NT receptors.


Assuntos
Neurotensina/farmacologia , Córtex Pré-Frontal/fisiologia , Córtex Pré-Frontal/ultraestrutura , Receptores de Neurotensina/efeitos dos fármacos , Receptores de Neurotensina/fisiologia , Animais , Masculino , Microinjeções , Pirazóis/farmacologia , Quinolinas/farmacologia , Ratos , Ratos Wistar , Receptores de Neurotensina/antagonistas & inibidores
11.
Neuroreport ; 3(11): 1027-9, 1992 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-1482762

RESUMO

Intracerebral microinjections of neurotensin (NT) decrease intracranial self-stimulation (ICSS) of the medial prefrontal cortex (MPC) in the rat. This effect could be due to the ability of NT to bind dopamine. To test this hypothesis we studied the effects of intracerebral microinjections of neuromedin N, a natural NT analogue that does not bind dopamine, on ICSS of the rat MPC. Unilateral microinjections of neuromedin N into the MPC at doses of 2.5, 5, 10, 20 and 40 nmol produced a dose-related decrease in ICSS of the ipsilateral MPC. ICSS of the contralateral MPC, used as a control, was not affected by the microinjections. These results suggest that the inhibitory effect of NT on ICSS is independent of NT-dopamine binding. Because neuromedin N is also present in the MPC, these results also suggest a possible neuromodulatory role of this neuropeptide on ICSS of the prefrontal cortex.


Assuntos
Neurotensina/farmacologia , Fragmentos de Peptídeos/farmacologia , Córtex Pré-Frontal/fisiologia , Autoestimulação/fisiologia , Proteínas de Xenopus , Animais , Depressão Química , Relação Dose-Resposta a Droga , Masculino , Microinjeções , Oligopeptídeos/farmacologia , Peptídeos , Ratos , Ratos Wistar , Técnicas Estereotáxicas
12.
Eur J Pharmacol ; 242(2): 205-8, 1993 Sep 28.
Artigo em Inglês | MEDLINE | ID: mdl-8253117

RESUMO

We studied the effects of peripheral and central administration of SCH 23390, a selective antagonist of dopamine D1 receptors, on intracranial self-stimulation of the medial prefrontal cortex of the rat. Intraperitoneal injections of SCH 23390 produced a dose-related decrease in self-stimulation. Unilateral microinjections of SCH 23390 into the medial prefrontal cortex also produced a dose-related decrease in self-stimulation in the ipsilateral medial prefrontal cortex. However, self-stimulation of the contralateral, noninjected prefrontal cortex, used as control, was not affected. Together with previous data, the present results suggest that the dopamine neurotransmission involved in self-stimulation of the prefrontal cortex of the rat is mediated by dopamine D1 receptors.


Assuntos
Benzazepinas/farmacologia , Córtex Pré-Frontal/efeitos dos fármacos , Receptores de Dopamina D1/fisiologia , Autoestimulação/efeitos dos fármacos , Animais , Masculino , Ratos , Ratos Wistar , Receptores de Dopamina D1/antagonistas & inibidores
13.
Eur J Pharmacol ; 231(1): 39-45, 1993 Jan 26.
Artigo em Inglês | MEDLINE | ID: mdl-8444280

RESUMO

The effects of intracerebral microinjections of neurotensin and xenopsin on self-stimulation of the medial prefrontal cortex of the rat were studied. Unilateral microinjections into the medial prefrontal cortex of neurotensin at doses of 0.625, 1.25, 2.5, 5 and 10 nmol produced a dose-related decrease of self-stimulation in the ipsilateral medial prefrontal cortex. Self-stimulation of the contralateral medial prefrontal contex, used as control, was not affected by the microinjections. Similar results were found with the neurotension-like octapeptide, xenopsin. Unilateral microinjections of xenoposin into the medial prefrontal cortex, at doses of 1.8, 3.6, 7.2 and 14.4 nmol produced a dose-related decrease of self-stimulation of the ipsilateral medial prefrontal cortex. Self-stimulation of the contralateral medial prefrontal cortex was not affected. These results suggest that neurotensin is part of the neurochemical substrate of self-stimulation in this cortical area.


Assuntos
Neurotensina/fisiologia , Córtex Pré-Frontal/fisiologia , Autoestimulação/fisiologia , Proteínas de Xenopus , Animais , Relação Dose-Resposta a Droga , Eletrodos Implantados , Masculino , Oligopeptídeos/farmacologia , Peptídeos , Córtex Pré-Frontal/efeitos dos fármacos , Ratos , Ratos Sprague-Dawley , Autoestimulação/efeitos dos fármacos
14.
Phytochemistry ; 52(8): 1479-82, 1999 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-10647220

RESUMO

Seven pure flavonoids were isolated and identified from five moss species. The flavonoids were the flavones apigenin, apigenin-7-O-triglycoside, lucenin-2, luteolin-7-O-neohesperidoside, saponarine and vitexin; and the biflavonoid bartramiaflavone. Some of these flavonoids were shown to have pronounced antibacterial effects against Enterobacter cloaceae, E. aerogenes and Pseudomonas aeruginosa (minimal bacteriostatic concentration MIC in the range of 4-2048 micrograms/ml). Because of their antibacterial spectrum mainly active against Gram negative bacterial strains, responsible for severe opportunistic infections and resistant to common antibacterial therapy, these flavonoids may be important tools in antibacterial strategies.


Assuntos
Antibacterianos/isolamento & purificação , Bryopsida/química , Flavonoides/isolamento & purificação , Bactérias Gram-Negativas/efeitos dos fármacos , Bactérias Gram-Positivas/efeitos dos fármacos , Antibacterianos/química , Antibacterianos/farmacologia , Flavonoides/química , Flavonoides/farmacologia , Bactérias Gram-Negativas/crescimento & desenvolvimento , Bactérias Gram-Positivas/crescimento & desenvolvimento , Testes de Sensibilidade Microbiana
15.
Rev Neurol ; 26(151): 439-44, 1998 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-9585959

RESUMO

INTRODUCTION: Area 17 or the primary visual area forms the first link in the chain of cerebral analysis of a visual image. The neurones forming the primary visual cortex are characterized by the extreme precision of their connections, functional specialization and hierarchic organization. The spatial precision of the connections within the system for vision permit retinotopic representation in the visual cortex, so that each point of the retina is projected into a specific area of the cortex. The cortical neurones which analyze the characteristics of the image situated in a precise zone of the visual field are themselves organized into a basic functional unit known as a hypercolumn. Within each hypercolumn there are various columnar cell systems with receptive fields having similar characteristics. Thus, each hypercolumn is made up of multiple orientation columns, two ocular dominance columns and 'blob' regions. All these systems permit the analysis of different aspects of the image. The neurones belonging to the orientation columns are sensitive to the orientation, spatial frequency and movement of a visual stimulus; those of the 'blob' regions to colour, and the binocular neurones of the ocular dominance columns to depth. Within each column, the hierarchical pattern of neurone interconnections determines the successive appearance of cells with receptive fields having new properties.


Assuntos
Córtex Visual/fisiologia , Percepção Visual/fisiologia , Corpos Geniculados/fisiologia , Ácido Glutâmico/metabolismo , Humanos , Vias Neurais/fisiologia , Córtex Visual/metabolismo , Campos Visuais/fisiologia , Ácido gama-Aminobutírico/metabolismo
16.
Arch Soc Esp Oftalmol ; 75(6): 389-96, 2000 Jun.
Artigo em Espanhol | MEDLINE | ID: mdl-11151183

RESUMO

PURPOSE: To investigate the possible participation of glutamate in the neurotransmission of the rat geniculo-cortical pathway. METHODS: In a first set of experiments, we studied the effects of microiontophoresis of kynurenate, a broad spectrum antagonist of glutamate receptors, on the excitation evoked in visual cortex cells by electrical stimulation of the dorsal lateral geniculate nucleus and the optic tract. Cell activity was determined by extracellular unit recordings. In a second set of experiments, we studied the effects of electrical stimulation of the dorsal lateral geniculate nucleus and the optic tract on the release of glutamate and aspartate in the visual cortex in vivo. Push pull perfusions were made in the visual cortex and the amino acids contents of the perfusates were analysed by high performance liquid chromatography. RESULTS: Microiontophoresis of kynureate in area 17 cells selectively supressed the excitatory response to dorsal geniculate nucleus and optic tract stimulation. On the other hand, stimulation of these structures significantly increased glutamate, but not aspartate, release in area 17. CONCLUSIONS: These results demonstrate that glutamate is the neurotransmitter of the geniculo-cortical pathway in the rat.


Assuntos
Corpos Geniculados/fisiologia , Ácido Glutâmico/fisiologia , Transmissão Sináptica/fisiologia , Córtex Visual/fisiologia , Animais , Ácido Aspártico/fisiologia , Antagonistas de Aminoácidos Excitatórios/administração & dosagem , Antagonistas de Aminoácidos Excitatórios/farmacologia , Feminino , Corpos Geniculados/efeitos dos fármacos , Iontoforese , Ácido Cinurênico/administração & dosagem , Ácido Cinurênico/farmacologia , Masculino , Ratos , Transmissão Sináptica/efeitos dos fármacos , Córtex Visual/efeitos dos fármacos
17.
An Med Interna ; 8(3): 131-2, 1991 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-1893020

RESUMO

A female diabetic patient of 66 years old with acute pyelonephritis, caused by escherichia coli, was further complicated by bacteremia and a rare septic metastasis such as arthritis of the knee and coxa-femoral, unilateral purulent endophthalmitis with a loss of sight and aortic endocarditis which required a surgical change of valves, the posterior evolution being favourable.


Assuntos
Artrite Infecciosa/microbiologia , Endocardite Bacteriana/microbiologia , Endoftalmite/microbiologia , Infecções por Escherichia coli , Idoso , Diabetes Mellitus Tipo 2/complicações , Infecções por Escherichia coli/complicações , Feminino , Humanos
18.
An Med Interna ; 6(12): 641-2, 1989 Dec.
Artigo em Espanhol | MEDLINE | ID: mdl-2491476

RESUMO

Two cases of patients with cystitis cystica secondary to urine infection, caused by resistant corynebacterium D2, are presented. The clinical features were important dysuria and frequency, alkaline urine Ph (Ph 8 and 9). The urine cultures were obtained with the standard techniques, after 72 hours of incubation. They were treated with vancomycin, ciprofloxacin and hydroxinamic acid with good response.


Assuntos
Infecções por Corynebacterium/diagnóstico , Cistite/diagnóstico , Idoso , Antibacterianos/uso terapêutico , Bacteriúria/diagnóstico , Bacteriúria/tratamento farmacológico , Bacteriúria/microbiologia , Corynebacterium/isolamento & purificação , Infecções por Corynebacterium/tratamento farmacológico , Infecções por Corynebacterium/microbiologia , Cistite/tratamento farmacológico , Cistite/microbiologia , Quimioterapia Combinada , Humanos , Masculino , Pessoa de Meia-Idade
19.
An Med Interna ; 8(2): 74-8, 1991 Feb.
Artigo em Espanhol | MEDLINE | ID: mdl-1893007

RESUMO

The efficacy and tolerance of captopril was prospectively studied as monotherapy for blood hypertension (BH), as well as combined modality with thiazides diuretic and nifedipine as a third drug. 95 cases of BH were followed up for a period of 6 months. 43.15% of the patients who received monotherapy with captopril were controlled (diastolic BP less than 95 mmHg). Those patients who had a diuretic added showed a response of 71.75% and those administered 3 drugs showed a response of 81.25%. The decrease of BH was significant in all groups (p less than 0.01). There was a significant correlation (p less than 0.01) between the response to monotherapy and severity of BH (mild BH 67.50% and severe BH 35.20%). 6.5% of patients abandoned the treatment because of secondary effects. No alterations were noted in the blood test. Monotherapy with captopril is effective in control of mild and moderate BH. In resistant patients, the addition of a diuretic and nifedipine retard as a third drug is useful and well-tolerated in any type of BH severity.


Assuntos
Captopril/uso terapêutico , Hipertensão/tratamento farmacológico , Adulto , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
20.
J Chir (Paris) ; 124(5): 337-41, 1987 May.
Artigo em Francês | MEDLINE | ID: mdl-3611234

RESUMO

A case of splenic hydatid cyst perforating into stomach is reported, only three similar cases being documented in the literature. Frequency, symptomatology, diagnostic methods and therapy of splenic hydatid cyst and of this strange complication are discussed.


Assuntos
Equinococose/complicações , Esplenopatias/complicações , Estômago/lesões , Equinococose/diagnóstico , Equinococose/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Esplenopatias/diagnóstico , Esplenopatias/cirurgia
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