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1.
Cir. plást. ibero-latinoam ; 49(3): 225-230, Juli-Sep. 2023. ilus, tab
Article in Spanish | IBECS | ID: ibc-227155

ABSTRACT

Introducción y objetivo: Para obtener buenos resultados en reconstrucción mamaria autóloga con colgajo de dorsal ancho se requiere verificar la presencia de una vascularización tóracodorsal adecuada. En el presente trabajo evaluamos la aportación de la ecografía Doppler-Dúplex para la localización de la arteria torácodorsal, previa a la reconstrucción mamaria diferida con colgajo de dorsal ancho. Material y método: Revisión de 51 pacientes con antecedentes de cirugía axilar por cáncer de mama candidatas a reconstrucción diferida con colgajo homolateral del músculo dorsal ancho. La exploración ecográfica la realizó un solo radiólogo utilizando la modalidad ecográfica Doppler-Dúplex. Resultados: Entre las 51 pacientes, se localizó la arteria tóracodorsal mediante ecografía en 39 casos (76.47%). En 12 casos no se pudo localizar o bien su identificación resultó dudosa. Entre estos 12 casos, en 8 se realizó angio-tomografía computarizada o bien angio-resonancia magnética que identificaron la arteria en 5 casos. En los otros 3, las pacientes rechazaron las exploraciones y no se sometieron a reconstrucción mediante la técnica estudiada o bien no se reconstruyeron. Se dispone de datos confirmados en 47 casos, entre los cuales no se ha visualizado vascularización tóracodorsal en 3 casos, lo que supone un 6.38%. Los parámetros diagnósticos resultantes fueron: sensibilidad 88.63%; especificidad 100%; valor predictivo positivo 100%;y valor predictivo negativo 37.50%, con una exactitud del 89.36%. Conclusiones: En base a nuestra experiencia podemos concluir que, siempre que se disponga de la experiencia y los medios técnicos adecuados, la ecografía Doppler-Dúplex debería ser el primer procedimiento a utilizar para la evaluación de la vascularización tóracodorsal. y en el caso de no reunir tales requisitos o bien si la ecografía fuera dudosa/negativa, realizar otros métodos como la angio-tomografía computarizada o la angio-resonancia magnética(AU).


Background and objective: To obtain good results with autologous latissimus dorsi flap in breast reconstruction it's necessary to verify the presence of adequate thoracodorsal vascularity. In this paper we evaluate the contribution of Doppler-Duplex ultrasound for the localization of the thoracodorsal vessels prior to delayed breast reconstruction with a dorsal fap. Methods: Review of 51 patients with a history of axillary surgery for breast cancer, candidates for delayed breast reconstruction with an ipsilateral flap of the latissimus dorsi muscle. The ultrasound examination was performed by a single radiologist using the Doppler-Duplex ultrasound modality. Results: Among the 51 patients, the thoracodorsal artery was located by ultrasound in 39 cases (76.47%). In 12 cases it could not be located or its identification was doubtful. Among these 12 cases, 8 underwent computed tomography angiography or magnetic resonance angiography, which identified the artery in 5 cases. In the remaining 3 cases the patients refused such examinations and did not undergo reconstruction. Confirmed data are available in 47 cases, among which thoracodorsal vasculature was not visualized in 3 cases, which represents 6.38%,The resulting diagnostic parameters were: sensitivity 88.63%; specificity 100%; positive predictive value 100%; and negative predictive value 37.50%, with an accuracy of 89.36%. Conclusions: From our experience we can conclude that,when the appropriate experience and equipment are available, Doppler-Duplex ultrasound should be the first procedure to be used for the evaluation of the thoracodorsal vasculature. And in the case of not meeting these requirements or the ultrasound was doubtful/negative, perform other methods such as computed tomography angiography or magnetic resonance angiography. Level of evidence 5c Diagnostic.(AU)


Subject(s)
Humans , Female , Adult , Middle Aged , Mammaplasty , Breast Neoplasms/surgery , Breast/diagnostic imaging , Ultrasonography, Doppler, Duplex , Predictive Value of Tests , Surgery, Plastic , Breast Implants , Retrospective Studies , Physical Examination , False Positive Reactions , False Negative Reactions , Sensitivity and Specificity
4.
Actas esp. psiquiatr ; 50(6): 287-294, noviembre 2022. tab
Article in Spanish | IBECS | ID: ibc-213900

ABSTRACT

Los momentos de alta receptividad (MAR) ofrecen soporte para una psicoterapia psicodinámica activa. Sin desechar elvalor de las intervenciones interpretativas, dentro del procesoterapéutico, el abordaje de las emociones y del componenteprocedimental ocupa un lugar central: tanto en las situacionesde gran intensidad emocional como cuando esta desaparece,como en la disociación ideoafectiva.Se muestra con ejemplos clínicos cómo la creación activade momentos de alta receptividad representa una herramienta técnica que facilita el acceso y la modificación de síntomasresistentes hasta ese momento. Todo ello con diversas modalidades de intervención sobre las emociones: secuenciación deestados emocionales, permitir expresión emocional acrítica sinanálisis de los contenidos subyacentes, el uso de un estímulodesencadenante, el uso de la autorrevelación o el acoplamientoexperiencial entre otras. (AU)


Moments of High Receptiveness (MoHR) offer support toactive dynamic psychotherapy. Without disregarding the valueof interpretive interventions, addressing the emotions and theprocedural components is central within the therapeutic process: both in situations of great emotional intensity as when itdisappears as in ideoaffective dissociation.The active creation of moments of high receptivity is shownthrough clinical examples as a technical tool that facilitatesaccess and modification of symptoms resistant before. Regardless of the various forms of intervention on emotions proposed: sequence of emotional states; allow uncritical emotionalexpression without analysis of the underlying content; use oftriggering stimulus; use of self revelation; or experiential coupling among others. (AU)


Subject(s)
Humans , Psychotherapy, Psychodynamic , Therapeutics , Emotions
5.
Anal Chem ; 94(30): 10626-10635, 2022 08 02.
Article in English | MEDLINE | ID: mdl-35866879

ABSTRACT

Barcoding and pooling cells for processing as a composite sample are critical to minimize technical variability in multiplex technologies. Fluorescent cell barcoding has been established as a standard method for multiplexing in flow cytometry analysis. In parallel, mass-tag barcoding is routinely used to label cells for mass cytometry. Barcode reagents currently used label intracellular proteins in fixed and permeabilized cells and, therefore, are not suitable for studies with live cells in long-term culture prior to analysis. In this study, we report the development of fluorescent palladium-based hybrid-tag nanotrackers to barcode live cells for flow and mass cytometry dual-modal readout. We describe the preparation, physicochemical characterization, efficiency of cell internalization, and durability of these nanotrackers in live cells cultured over time. In addition, we demonstrate their compatibility with standardized cytometry reagents and protocols. Finally, we validated these nanotrackers for drug response assays during a long-term coculture experiment with two barcoded cell lines. This method represents a new and widely applicable advance for fluorescent and mass-tag barcoding that is independent of protein expression levels and can be used to label cells before long-term drug studies.


Subject(s)
Electronic Data Processing , Fluorescent Dyes , Cell Line , Flow Cytometry/methods , Fluorescent Dyes/chemistry , Proteomics
6.
Vet Res Commun ; 46(2): 609-612, 2022 Jun.
Article in English | MEDLINE | ID: mdl-34854017

ABSTRACT

Twenty-five ewe-lambs born in November were used to measure the effect of the presence of cyclic or non-cyclic adult ewes on the age at first fertile estrus. Lambs were weaned at 45 days of age and kept in a single flock until 3 Mar (4 months old), when they were assigned to one of the following three groups: Group CE (n = 8), housed with six cyclic adult ewes; Group NCE (n = 8), housed with three non-cyclic ovariectomized adult ewes, and Group ISO (n = 9), housed isolated from adult ewes. On 2nd May (6 months old), two rams were introduced into each group, until 31st Oct (12 months old), when rams were removed. Adult ewes in group CE were separated from rams and ewe-lambs by a metal fence, allowing visual, olfactory, and nose-to-nose contact between animals. Average earliest fertile estrus was significantly (P < 0.01) earlier in NCE ewe-lambs (8th Aug) than it was in ISO (9th Sep) and CE (17th Sep) ewe-lambs, they lambed about 35 d earlier (1st Jan) than did the other two groups (2nd Feb and 10th Feb, respectively) (P < 0.01), and at an earlier age (14 mo, 15.2 mo, and 15.3 mo, respectively; P < 0.01). In conclusion, the presence of non-ovulatory adult ewes advanced puberty in autumn-born ewe-lambs of a Mediterranean genotype. The factor(s) that delayed age at puberty in isolated females and those housed with estrous adult ewes remains to be elucidated.


Subject(s)
Fertility , Sexual Maturation , Aging , Animals , Female , Genotype , Male , Sheep
7.
Actas Esp Psiquiatr ; 50(6): 287-294, 2022 Nov.
Article in English | MEDLINE | ID: mdl-36622716

ABSTRACT

Moments of High Receptiveness (MoHR) offer support to active dynamic psychotherapy.


Subject(s)
Psychotherapy, Psychodynamic , Humans , Emotions , Psychotherapy
8.
Sensors (Basel) ; 21(23)2021 Nov 25.
Article in English | MEDLINE | ID: mdl-34883848

ABSTRACT

Cloud robotics and advanced communications can foster a step-change in cooperative robots and hybrid wireless sensor networks (H-WSN) for demanding environments (e.g., disaster response, mining, demolition, and nuclear sites) by enabling the timely sharing of data and computational resources between robot and human teams. However, the operational complexity of such multi-agent systems requires defining effective architectures, coping with implementation details, and testing in realistic deployments. This article proposes X-IoCA, an Internet of robotic things (IoRT) and communication architecture consisting of a hybrid and heterogeneous network of wireless transceivers (H2WTN), based on LoRa and BLE technologies, and a robot operating system (ROS) network. The IoRT is connected to a feedback information system (FIS) distributed among multi-access edge computing (MEC) centers. Furthermore, we present SAR-IoCA, an implementation of the architecture for search and rescue (SAR) integrated into a 5G network. The FIS for this application consists of an SAR-FIS (including a path planner for UGVs considering risks detected by a LoRa H-WSN) and an ROS-FIS (for real-time monitoring and processing of information published throughout the ROS network). Moreover, we discuss lessons learned from using SAR-IoCA in a realistic exercise where three UGVs, a UAV, and responders collaborated to rescue victims from a tunnel accessible through rough terrain.


Subject(s)
Disasters , Internet of Things , Robotics , Feedback , Humans , Rescue Work
9.
Clin Case Rep ; 9(9): e04646, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34567551

ABSTRACT

This is the first case of a patient taking aprepitant for a post-acute COVID-19 syndrome. This case may encourage researchers to look for the evidence for the efficacy and safety of a neurokinin 1 receptor antagonist in this frequent syndrome.

10.
Genes (Basel) ; 12(4)2021 04 17.
Article in English | MEDLINE | ID: mdl-33920552

ABSTRACT

Mucorales are the causal agents for the lethal disease known as mucormycosis. Mortality rates of mucormycosis can reach up to 90%, due to the mucoralean antifungal drug resistance and the lack of effective therapies. A concerning urgency among the medical and scientific community claims to find targets for the development of new treatments. Here, we reviewed different studies describing the role and machinery of a novel non-canonical RNAi pathway (NCRIP) only conserved in Mucorales. Its non-canonical features are the independence of Dicer and Argonaute proteins. Conversely, NCRIP relies on RNA-dependent RNA Polymerases (RdRP) and an atypical ribonuclease III (RNase III). NCRIP regulates the expression of mRNAs by degrading them in a specific manner. Its mechanism binds dsRNA but only cuts ssRNA. NCRIP exhibits a diversity of functional roles. It represses the epimutational pathway and the lack of NCRIP increases the generation of drug resistant strains. NCRIP also regulates the control of retrotransposons expression, playing an essential role in genome stability. Finally, NCRIP regulates the response during phagocytosis, affecting the multifactorial process of virulence. These critical NCRIP roles in virulence and antifungal drug resistance, along with its exclusive presence in Mucorales, mark this pathway as a promising target to fight against mucormycosis.


Subject(s)
Drug Resistance, Fungal , Mucorales/pathogenicity , RNA Interference , Antifungal Agents/pharmacology , Mucorales/drug effects , Mucorales/genetics , RNA Stability , RNA, Fungal/genetics , RNA, Messenger/chemistry , Signal Transduction
11.
Food Chem ; 355: 129629, 2021 Sep 01.
Article in English | MEDLINE | ID: mdl-33773459

ABSTRACT

A new original application for a polyacrylic film based on the monomers 2-(dimethylamino)ethyl methacrylate (NNDA), 2-hydroxyethyl acrylate (2HEA) and methylmethacrylate (MMA) as a starch azure container has been set up for a simple determination of honey diastase activity. The proposed method is based on the correlation of reducing sugars generated during the enzymatic process with the Schade reference assay. The polyacrylic film is charged with starch azure acting as a container for this substance; thus, the starch does not interfere in the measurement of reducing sugars, so that the diastase activity is easily calculated. The method has been contrasted with Schade method, showing good correlation and differences under 0.4% between methods in some honey samples. The polyacrylic film has great potential for the routine honey diastase activity assessment in small laboratories, dramatically reducing analysis time and cost.


Subject(s)
Amylases/metabolism , Azure Stains/chemistry , Honey , Starch/chemistry , Amylases/analysis , Honey/analysis , Polymers/chemistry
12.
Rev. senol. patol. mamar. (Ed. impr.) ; 34(1): 3-10, ene. -mar. 2021. ilus, tab, graf
Article in Spanish | IBECS | ID: ibc-EMG-601

ABSTRACT

Objetivos Evaluar la utilidad de la biopsia ecoguiada con aguja gruesa diagnóstica (BAG1) para la determinación del perfil de expresión génica tumoral (PEG), en los tumores malignos de mama. Materiales y métodos Revisión de 130 biopsias ecoguiadas con aguja gruesa (BAG), con resultado de malignidad. Se consideraron «aptas» las muestras con, al menos, un 30% de células tumorales. Se estudió la influencia del tamaño tumoral (menor de 1 cm, entre 1-2 cm y mayor de 2 cm) y se analizaron las causas que motivaron muestras no aptas. Se utilizó la plataforma MammaPrint® (70 genes). Se evaluó la influencia del grado histológico y del riesgo genómico en los resultados. Resultados En la BAG1 se obtuvieron muestras aptas en 100 biopsias (76,92%). Entre los 36 casos en los que se utilizó la BAG para obtener el PEG, en 32 (88,89%) se realizó a partir de la BAG1. Entre los 30 casos en los que la BAG1 no resultó apta, en 26 casos no se obtuvo el porcentaje mínimo de células tumorales en la muestra. Ni el grado histológico ni el riesgo genómico influyeron en los resultados. Conclusiones Las muestras diagnósticas de la biopsia ecoguiada con aguja gruesa (BAG1) pueden ser válidas para la determinación del perfil de expresión génica. Ello facilita y acelera el proceso de evaluación pronóstica en los tumores infiltrantes de mama. Por ello, proponemos que, de manera rutinaria y ante el diagnóstico de tumor maligno infiltrante, conste el porcentaje de células tumorales en los informes anatomopatológicos. (AU)


Objectives To assess the utility of diagnostic ultrasound-guided core needle biopsy (CNB1) for determining tumour gene expression profile (GEP) in malignant breast tumours. Materials and Methods Review of 130 diagnostic ultrasound-guided core needle biopsies (CNB1) indicating malignancy. Samples with at least 30% tumour cells were considered suitable. The influence of tumour size (less than 1 cm, between 1-2 cm and greater than 2 cm) was studied and the causes of unsuitable samples were analysed. The MammaPrint® platform (70 genes) was used. The influence of histological grade and genomic risk was evaluated. Results Suitable CNB1 samples were obtained in 100 biopsies (76.92%). Among the 36 cases in which CNB was used to obtain the GEP, in 32 (88.89%) it was performed using the CNB1. Among the 30 cases in which CNB1 was not suitable, the minimum percentage of tumour cells in the sample was not obtained in 26 cases. Neither histological grade nor genomic risk influenced the results. Conclusions Diagnostic samples from ultrasound-guided biopsy (CNB1) can be valid to determine GEP. This facilitates and accelerates the prognostic evaluation process in infiltrating breast tumours. Therefore, we propose that, when diagnosing an infiltrating malignant tumour, the percentage of tumour cells should be routinely recorded in the pathology reports. (AU)


Subject(s)
Breast Neoplasms/diagnosis , Biopsy, Large-Core Needle , Gene Expression
13.
Rev. senol. patol. mamar. (Ed. impr.) ; 34(1): 3-10, ene. -mar. 2021. ilus, tab, graf
Article in Spanish | IBECS | ID: ibc-230547

ABSTRACT

Objetivos Evaluar la utilidad de la biopsia ecoguiada con aguja gruesa diagnóstica (BAG1) para la determinación del perfil de expresión génica tumoral (PEG), en los tumores malignos de mama. Materiales y métodos Revisión de 130 biopsias ecoguiadas con aguja gruesa (BAG), con resultado de malignidad. Se consideraron «aptas» las muestras con, al menos, un 30% de células tumorales. Se estudió la influencia del tamaño tumoral (menor de 1 cm, entre 1-2 cm y mayor de 2 cm) y se analizaron las causas que motivaron muestras no aptas. Se utilizó la plataforma MammaPrint® (70 genes). Se evaluó la influencia del grado histológico y del riesgo genómico en los resultados. Resultados En la BAG1 se obtuvieron muestras aptas en 100 biopsias (76,92%). Entre los 36 casos en los que se utilizó la BAG para obtener el PEG, en 32 (88,89%) se realizó a partir de la BAG1. Entre los 30 casos en los que la BAG1 no resultó apta, en 26 casos no se obtuvo el porcentaje mínimo de células tumorales en la muestra. Ni el grado histológico ni el riesgo genómico influyeron en los resultados. Conclusiones Las muestras diagnósticas de la biopsia ecoguiada con aguja gruesa (BAG1) pueden ser válidas para la determinación del perfil de expresión génica. Ello facilita y acelera el proceso de evaluación pronóstica en los tumores infiltrantes de mama. Por ello, proponemos que, de manera rutinaria y ante el diagnóstico de tumor maligno infiltrante, conste el porcentaje de células tumorales en los informes anatomopatológicos. (AU)


Objectives To assess the utility of diagnostic ultrasound-guided core needle biopsy (CNB1) for determining tumour gene expression profile (GEP) in malignant breast tumours. Materials and Methods Review of 130 diagnostic ultrasound-guided core needle biopsies (CNB1) indicating malignancy. Samples with at least 30% tumour cells were considered suitable. The influence of tumour size (less than 1 cm, between 1-2 cm and greater than 2 cm) was studied and the causes of unsuitable samples were analysed. The MammaPrint® platform (70 genes) was used. The influence of histological grade and genomic risk was evaluated. Results Suitable CNB1 samples were obtained in 100 biopsies (76.92%). Among the 36 cases in which CNB was used to obtain the GEP, in 32 (88.89%) it was performed using the CNB1. Among the 30 cases in which CNB1 was not suitable, the minimum percentage of tumour cells in the sample was not obtained in 26 cases. Neither histological grade nor genomic risk influenced the results. Conclusions Diagnostic samples from ultrasound-guided biopsy (CNB1) can be valid to determine GEP. This facilitates and accelerates the prognostic evaluation process in infiltrating breast tumours. Therefore, we propose that, when diagnosing an infiltrating malignant tumour, the percentage of tumour cells should be routinely recorded in the pathology reports. (AU)


Subject(s)
Breast Neoplasms/diagnosis , Biopsy, Large-Core Needle , Gene Expression
14.
Nanoscale ; 13(6): 3500-3511, 2021 Feb 18.
Article in English | MEDLINE | ID: mdl-33560282

ABSTRACT

In this manuscript, we report the development of a versatile, robust, and stable targeting nanocarrier for active delivery. This nanocarrier is based on bifunctionalized polymeric nanoparticles conjugated to a monoclonal antibody that allows for active targeting of either (i) a fluorophore for tracking or (ii) a drug for monitoring specific cell responses. This nanodevice can efficiently discriminate between cells in coculture based on the expression levels of cell surface receptors. As a proof of concept, we have demonstrated efficient delivery using a broadly established cell surface receptor as the target, the epidermal growth factor receptor (EGFR), which is overexpressed in several types of cancers. Additionally, a second validation of this nanodevice was successfully carried out using another cell surface receptor as the target, the cluster of differentiation 147 (CD147). Our results suggest that this versatile nanocarrier can be expanded to other cell receptors and bioactive cargoes, offering remarkable discrimination efficiency between cells with different expression levels of a specific marker. This work supports the ability of nanoplatforms to boost and improve the progress towards personalized medicine.


Subject(s)
Drug Carriers , Nanoparticles , Cell Line, Tumor , Coculture Techniques , Drug Delivery Systems , Polymers
15.
Sensors (Basel) ; 21(2)2021 Jan 14.
Article in English | MEDLINE | ID: mdl-33466882

ABSTRACT

The urban population, worldwide, is growing exponentially and with it the demand for information on pollution levels, vehicle traffic, or available parking, giving rise to citizens connected to their environment. This article presents an experimental long range (LoRa) and low power consumption network, with a combination of static and mobile wireless sensors (hybrid architecture) to tune and validate concentrator placement, to obtain a large coverage in an urban environment. A mobile node has been used, carrying a gateway and various sensors. The Activation By Personalization (ABP) mode has been used, justified for urban applications requiring multicasting. This allows to compare the coverage of each static gateway, being able to make practical decisions about its location. With this methodology, it has been possible to provide service to the city of Malaga, through a single concentrator node. The information acquired is synchronized in an external database, to monitor the data in real time, being able to geolocate the dataframes through web mapping services. This work presents the development and implementation of a hybrid wireless sensor network of long range and low power, configured and tuned to achieve efficient performance in a mid-size city, and tested in experiments in a real urban environment.

16.
Polymers (Basel) ; 12(6)2020 Jun 01.
Article in English | MEDLINE | ID: mdl-32492910

ABSTRACT

Despite the large number of polymeric nanodelivery systems that have been recently developed, there is still room for improvement in terms of therapeutic efficiency. Most reported nanodevices for controlled release are based on drug encapsulation, which can lead to undesired drug leakage with a consequent reduction in efficacy and an increase in systemic toxicity. Herein, we present a strategy for covalent drug conjugation to the nanodevice to overcome this drawback. In particular, we characterize and evaluate an effective therapeutic polymeric PEGylated nanosystem for controlled pH-sensitive drug release on a breast cancer (MDA-MB-231) and two lung cancer (A549 and H520) cell lines. A significant reduction in the required drug dose to reach its half maximal inhibitory concentration (IC50 value) was achieved by conjugation of the drug to the nanoparticles, which leads to an improvement in the therapeutic index by increasing the efficiency. The genotoxic effect of this nanodevice in cancer cells was confirmed by nucleus histone H2AX specific immunostaining. In summary, we successfully characterized and validated a pH responsive therapeutic polymeric nanodevice in vitro for controlled anticancer drug release.

17.
Genes (Basel) ; 11(3)2020 03 16.
Article in English | MEDLINE | ID: mdl-32188171

ABSTRACT

The order Mucorales is a group of ancient fungi with limited tools for gene manipulation. The main consequence of this manipulation unwillingness is the limited knowledge about its biology compared to other fungal groups. However, the emerging of mucormycosis, a fungal infection caused by Mucorales, is attracting the medical spotlight in recent years because the treatments available are not efficient in reducing the high mortality associated with this disease. The result of this renewed interest in Mucorales and mucormycosis is an extraordinarily productive effort to unveil their secrets during the last decade. In this review, we describe the most compelling advances related to the genetic study of virulence factors, pathways, and molecular mechanisms developed in these years. The use of a few genetic study models has allowed the characterization of virulence factors in Mucorales that were previously described in other pathogens, such as the uptake iron systems, the mechanisms of dimorphism, and azole resistances. More importantly, recent studies are identifying new genes and mechanisms controlling the pathogenic potential of Mucorales and their interactions with the host, offering new alternatives to develop specific strategies against mucormycosis.


Subject(s)
Genes, Fungal , Host-Pathogen Interactions , Mucorales/genetics , Drug Resistance, Fungal , Metabolic Networks and Pathways , Mucorales/drug effects , Mucorales/metabolism , Mucorales/pathogenicity
18.
Environ Sci Pollut Res Int ; 27(10): 10436-10448, 2020 Apr.
Article in English | MEDLINE | ID: mdl-31939023

ABSTRACT

Nectar of honeybee colonies has been used in order to identify heavy metals and establish the benefit of this type of studies as a tool for environmental management. For these goals, samples of nectar were obtained from Apis mellifera hives placed in the city of Córdoba (Spain) and its surroundings. Five stations (each with two hives) were selected and samples were collected from May to July of 2007, 2009 and 2010. Concentrations of Pb, Cr, Ni and Cd in nectar were determined by graphite furnace atomic absorption spectrophotometry. Substantial spatial and temporal differences were detected and compared with the values found in bee bodies in a previously published study based on samples obtained simultaneously with those presented in this work. Upper reference thresholds established for this investigation were surpassed frequently by the measures obtained, being Cr (21.43% of samples), stations S3 (22.22%) and S4 (11.12%) year 2009 (22.22%) and the month of July (23.68%) the metal, the locations and the periods that exceeded more times these references. Regarding the Cd, which was studied only in 2010, 33.33% of the nectar samples exceeded the upper reference thresholds. Comparing the biomonitoring of bee bodies and nectar, some coincidences were found, although they showed different results for highest worrisome values of metal, station and year. This suggests that both methods can give complementary information in the surveillance systems of atmospheric pollution.


Subject(s)
Metals, Heavy/analysis , Plant Nectar , Animals , Bees , Biological Monitoring , Cities , Environmental Monitoring , Spain
19.
Antioxidants (Basel) ; 8(11)2019 10 23.
Article in English | MEDLINE | ID: mdl-31652719

ABSTRACT

Peroxiredoxin 6 (Prdx6) is the only member of 1-Cys subfamily of peroxiredoxins in human cells. It is the only Prdx acting on phospholipid hydroperoxides possessing two additional sites with phospholipase A2 (PLA2) and lysophosphatidylcholine-acyl transferase (LPCAT) activities. There are contrasting reports on the roles and mechanisms of multifunctional Prdx6 in several pathologies and on its sensitivity to, and influence on, the redox environment. We have down-regulated Prdx6 with specific siRNA in hepatoblastoma HepG2 cells to study its role in cell proliferation, redox homeostasis, and metabolic programming. Cell proliferation and cell number decreased while cell volume increased; import of glucose and nucleotide biosynthesis also diminished while polyamines, phospholipids, and most glycolipids increased. A proteomic quantitative analysis suggested changes in membrane arrangement and vesicle trafficking as well as redox changes in enzymes of carbon and glutathione metabolism, pentose-phosphate pathway, citrate cycle, fatty acid metabolism, biosynthesis of aminoacids, and Glycolysis/Gluconeogenesis. Specific redox changes in Hexokinase-2 (HK2), Prdx6, intracellular chloride ion channel-1 (CLIC1), PEP-carboxykinase-2 (PCK2), and 3-phosphoglycerate dehydrogenase (PHGDH) are compatible with the metabolic remodeling toward a predominant gluconeogenic flow from aminoacids with diversion at 3-phospohglycerate toward serine and other biosynthetic pathways thereon and with cell cycle arrest at G1/S transition.

20.
Sensors (Basel) ; 19(1)2019 Jan 08.
Article in English | MEDLINE | ID: mdl-30626151

ABSTRACT

Robots, or in general, intelligent vehicles, require large amounts of data to adapt their behavior to the environment and achieve their goals. When their missions take place in large areas, using additional information to that gathered by the onboard sensors frequently offers a more efficient solution of the problem. The emergence of Cyber-Physical Systems and Cloud computing allows this approach, but integration of sensory information, and its effective availability for the robots or vehicles is challenging. This paper addresses the development and implementation of a modular mobile node of a Wireless Sensor Network (WSN), designed to be mounted onboard vehicles, and capable of using different sensors according to mission needs. The mobile node is integrated with an existing static network, transforming it into a Hybrid Wireless Sensor Network (H-WSN), and adding flexibility and range to it. The integration is achieved without the need for multi-hop routing. A database holds the data acquired by both mobile and static nodes, allowing access in real-time to the gathered information. A Human⁻Machine Interface (HMI) presents this information to users. Finally, the system is tested in real urban scenarios in a use-case of measurement of gas levels.

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