LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 22

Search options

  1. Article: An approach to the phenomenology of the disease.

    Espinosa, Carlos Alva

    Gaceta medica de Mexico

    2017  Volume 153, Issue 5, Page(s) 641–644

    Abstract: Modern medicine has undergone technological progress, undoubtedly with better results, but the doctor-patient relationship has been undermined in its most important aspect, human contact. The patient experiences and confronts in solitude his adverse ... ...

    Title translation Una aproximación a la fenomenología de la enfermedad.
    Abstract Modern medicine has undergone technological progress, undoubtedly with better results, but the doctor-patient relationship has been undermined in its most important aspect, human contact. The patient experiences and confronts in solitude his adverse experience. This experience is complex, not only are the symptoms of the disease, they also include disability, isolation, fear, dependence and sometimes guilt. Phenomenology attaches a paramount importance to the data in the consciousness of the patient, as facts given with absolute value. The purpose of this paper is to deepen the experience of the healthy adult individual who is ill. The better understanding of this phenomenology of the patient by the physician and the health personnel, can favor a better efficiency, empathy and compassion in their care.
    Language Spanish
    Publishing date 2017
    Publishing country Mexico
    Document type Journal Article
    ZDB-ID 425456-9
    ISSN 0016-3813
    ISSN 0016-3813
    DOI 10.24875/GMM.17003009
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Recommender system for ablation lines to treat complex atrial tachycardia.

    Vila, Muhamed / Rivolta, Massimo W / Barrios Espinosa, Cristian A / Unger, Laura A / Luik, Armin / Loewe, Axel / Sassi, Roberto

    Computer methods and programs in biomedicine

    2023  Volume 231, Page(s) 107406

    Abstract: Background and objective: Planning the optimal ablation strategy for the treatment of complex atrial tachycardia (CAT) is a time consuming task and is error-prone. Recently, directed network mapping, a technology based on graph theory, proved to ... ...

    Abstract Background and objective: Planning the optimal ablation strategy for the treatment of complex atrial tachycardia (CAT) is a time consuming task and is error-prone. Recently, directed network mapping, a technology based on graph theory, proved to efficiently identify CAT based solely on data of clinical interventions. Briefly, a directed network was used to model the atrial electrical propagation and reentrant activities were identified by looking for closed-loop paths in the network. In this study, we propose a recommender system, built as an optimization problem, able to suggest the optimal ablation strategy for the treatment of CAT.
    Methods: The optimization problem modeled the optimal ablation strategy as that one interrupting all reentrant mechanisms while minimizing the ablated atrial surface. The problem was designed on top of directed network mapping. Considering the exponential complexity of finding the optimal solution of the problem, we introduced a heuristic algorithm with polynomial complexity. The proposed algorithm was applied to the data of i) 6 simulated scenarios including both left and right atrial flutter; and ii) 10 subjects that underwent a clinical routine.
    Results: The recommender system suggested the optimal strategy in 4 out of 6 simulated scenarios. On clinical data, the recommended ablation lines were found satisfactory on 67% of the cases according to the clinician's opinion, while they were correctly located in 89%. The algorithm made use of only data collected during mapping and was able to process them nearly real-time.
    Conclusions: The first recommender system for the identification of the optimal ablation lines for CAT, based solely on the data collected during the intervention, is presented. The study may open up interesting scenarios for the application of graph theory for the treatment of CAT.
    MeSH term(s) Humans ; Catheter Ablation ; Tachycardia, Supraventricular ; Atrial Flutter/surgery ; Heart Atria/surgery ; Treatment Outcome
    Language English
    Publishing date 2023-02-05
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 632564-6
    ISSN 1872-7565 ; 0169-2607
    ISSN (online) 1872-7565
    ISSN 0169-2607
    DOI 10.1016/j.cmpb.2023.107406
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Metatranscriptome Profiling of a Specialized Microbial Consortium during the Degradation of Nixtamalized Maize Pericarp.

    Serrano-Gamboa, José Germán / Fócil-Espinosa, Carlos Abraham / Cabello-Yeves, Pedro J / Coutinho, Felipe H / Rojas-Herrera, Rafael Antonio / Sánchez-González, Mónica Noel

    Microbiology spectrum

    2022  Volume 10, Issue 1, Page(s) e0231821

    Abstract: Lignocellulose degradation by microbial consortia is multifactorial; hence, it must be analyzed from a holistic perspective. In this study, the temporal transcriptional activity of consortium PM-06, a nixtamalized maize pericarp (NMP) degrader, was ... ...

    Abstract Lignocellulose degradation by microbial consortia is multifactorial; hence, it must be analyzed from a holistic perspective. In this study, the temporal transcriptional activity of consortium PM-06, a nixtamalized maize pericarp (NMP) degrader, was determined and related to structural and physicochemical data to give insights into the mechanism used to degrade this substrate. Transcripts were described in terms of metabolic profile, carbohydrate-active enzyme (CAZyme) annotation, and taxonomic affiliation. The PM-06 gene expression pattern was closely related to the differential rates of degradation. The environmental and physiological conditions preceding high-degradation periods were crucial for CAZyme expression. The onset of degradation preceded the period with the highest degradation rate in the whole process, and in this time, several CAZymes were upregulated. Functional analysis of expressed CAZymes indicated that PM-06 overcomes NMP recalcitrance through modular enzymes operating at the proximity of the insoluble substrate. Increments in the diversity of expressed modular CAZymes occurred in the last stages of degradation where the substrate is more recalcitrant and environmental conditions are stressing. Taxonomic affiliation of CAZyme transcripts indicated that Paenibacillus macerans was fundamental for degradation. This microorganism established synergistic relationships with Bacillus thuringiensis for the degradation of cellulose and hemicellulose and with
    MeSH term(s) Bacteria/classification ; Bacteria/genetics ; Bacteria/isolation & purification ; Bacteria/metabolism ; Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Biodegradation, Environmental ; Cellulose/metabolism ; Gene Expression Profiling ; Lignin/metabolism ; Microbial Consortia ; Polysaccharides/metabolism ; Transcriptome ; Zea mays/metabolism ; Zea mays/microbiology
    Chemical Substances Bacterial Proteins ; Polysaccharides ; lignocellulose (11132-73-3) ; hemicellulose (8024-50-8) ; Cellulose (9004-34-6) ; Lignin (9005-53-2)
    Language English
    Publishing date 2022-01-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/spectrum.02318-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: A three-criteria performance score for rats exercising on a running treadmill.

    Ríos-Kristjánsson, Juan Gabriel / Rizo-Roca, David / Kristjánsdóttir, Karen Mist / Núñez-Espinosa, Cristian Andrés / Torrella, Joan Ramon / Pagès, Teresa / Viscor, Ginés

    PloS one

    2019  Volume 14, Issue 7, Page(s) e0219167

    Abstract: In this study, we propose a novel three-criteria performance score to semiquantitatively classify the running style, the degree of involvement and compliance and the validity of electric shock count for rats exercising on a treadmill. Each score ... ...

    Abstract In this study, we propose a novel three-criteria performance score to semiquantitatively classify the running style, the degree of involvement and compliance and the validity of electric shock count for rats exercising on a treadmill. Each score criterion has several style-marks that are based on the observational registry of male Sprague-Dawley rats running for 4-7 weeks. Each mark was given a score value that was averaged throughout a session-registry and resulting in a session score for each criterion, ranging from "0" score for a hypothetical "worst runner", to score "1" for a hypothetical "perfect runner" rat. We found significant differences throughout a training program, thus providing evidence of sufficient sensitivity of this score to reflect the individual evolution of performance improvement in exercise capacity due to training. We hypothesize that this score could be correlated with other physiological or metabolic parameters, thus refining research results and further helping researchers to reduce the number of experimental subjects.
    MeSH term(s) Animals ; Male ; Physical Conditioning, Animal/methods ; Physical Conditioning, Animal/physiology ; Physical Conditioning, Animal/statistics & numerical data ; Rats ; Rats, Sprague-Dawley ; Running/physiology ; Running/statistics & numerical data
    Language English
    Publishing date 2019-07-09
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0219167
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Clinicopathologic and Surgical Study of Pleomorphic Adenoma of the Parotid Gland: Analysis of Risk Factors for Recurrence and Facial Nerve Dysfunction.

    Espinosa, Carlos A / Fernández-Valle, Álvaro / Lequerica-Fernández, Paloma / de Villalaín, Lucas / de Vicente, Juan Carlos

    Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons

    2017  Volume 76, Issue 2, Page(s) 347–354

    Abstract: Purpose: To determine whether clinicopathologic or surgical features are risk factors for recurrence and facial nerve dysfunction in pleomorphic adenoma (PA) of the parotid gland.: Patients and methods: The records of 198 patients surgically treated ... ...

    Abstract Purpose: To determine whether clinicopathologic or surgical features are risk factors for recurrence and facial nerve dysfunction in pleomorphic adenoma (PA) of the parotid gland.
    Patients and methods: The records of 198 patients surgically treated for a PA of the parotid gland from 1999 through 2013 were retrospectively reviewed to identify patients who developed a tumor recurrence. The Fisher exact test and Mann-Whitney U test were used to analyze patient characteristics between recurrent and non-recurrent PAs. Logistic regression was used to determine the risks of recurrence and facial nerve dysfunction.
    Results: Twenty-three patients (11.6%) developed a recurrence. Patients with tumor recurrence were notably younger than patients without recurrence. Of the 14 patients who underwent enucleation, 11 (78.6%) developed residual disease, as did 10 of 165 patients (6%) managed by a superficial parotidectomy (P < .0005). Furthermore, the risk of residual disease was 9.3 to 21.6 times higher in patients who underwent enucleation than in those who underwent a total or superficial parotidectomy. For tumor histology, recurrence was observed in 3 (15.8%) of the 19 cellular types, 18 (11.5%) of 157 classic cases, and 1 (4.8%) of 21 myxoid cases (P = .5). The risk of recurrence with positive resection margins was 49 times higher than with negative margins (P = .001).
    Conclusion: Young age, enucleation, and positive margins are risk factors for residual pleomorphic adenoma, and surgical technique and histomorphologic features are associated with increased facial nerve dysfunction.
    MeSH term(s) Adenoma, Pleomorphic/pathology ; Adenoma, Pleomorphic/surgery ; Adolescent ; Adult ; Age Factors ; Aged ; Aged, 80 and over ; Facial Nerve/pathology ; Female ; Humans ; Male ; Margins of Excision ; Middle Aged ; Neoplasm Recurrence, Local/pathology ; Parotid Neoplasms/pathology ; Parotid Neoplasms/surgery ; Retrospective Studies ; Risk Factors
    Language English
    Publishing date 2017-08-03
    Publishing country United States
    Document type Journal Article ; Observational Study
    ZDB-ID 392404-x
    ISSN 1531-5053 ; 0278-2391
    ISSN (online) 1531-5053
    ISSN 0278-2391
    DOI 10.1016/j.joms.2017.07.171
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Sclerosing Polycystic Adenosis of the Parotid Gland: A Systematic Review and Report of 2 New Cases.

    Espinosa, Carlos A / Rua, Laura / Torres, Héctor E / Fernández Del Valle, Álvaro / Fernandes, Rui P / Devicente, Juan C

    Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons

    2017  Volume 75, Issue 5, Page(s) 984–993

    Abstract: Purpose: We sought to evaluate clinical-epidemiologic aspects, pathologic characteristics, and treatment of sclerosing polycystic adenosis (SPA) of the parotid gland and to report 2 new cases.: Materials and methods: We conducted a systematic review ... ...

    Abstract Purpose: We sought to evaluate clinical-epidemiologic aspects, pathologic characteristics, and treatment of sclerosing polycystic adenosis (SPA) of the parotid gland and to report 2 new cases.
    Materials and methods: We conducted a systematic review following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines for studies published in or before June 2016. The inclusion criteria were as follows: final diagnosis of SPA affecting the parotid gland and articles published in Spanish or English. The exclusion criteria were as follows: unclear diagnosis after pathologic analysis and patients affected by other conditions in the major salivary glands. We added 2 new cases.
    Results: Our review ultimately included 21 articles and 45 cases. The mean patient age was 41 years (range, 7-84 years). The female-to-male ratio was 2:1. In all patients the tumor showed progressive growth. The evolution range was 7 days to 11 years. In 17.7% of cases, the tumor was associated with pain. The average tumor size was 30.3 mm (range, 12-60 mm). Fine needle aspiration biopsy (FNAB) was unable to diagnose 30 cases. Benign tumors comprised 58% of tumors (18), whereas malignancy was present in 25.8% (8). Thirty-five tumors were well circumscribed. There were 8 multinodular or lobed cases. The tumor was described as encapsulated in 1 case, partially encapsulated or pseudo-encapsulated in 16, and not encapsulated in 12. Five cases showed different degrees of degenerative changes, ranging from dysplasia to invasive carcinoma. All cases underwent surgical treatment. Superficial parotidectomy with preservation of the facial nerve was performed in 22 cases (61.1%), total parotidectomy in 8 (22.2%), and tumor enucleation in 6 (16.6%). The mean follow-up period was 51.5 months (range, 5-276 months). Of documented cases, 74.2% had 2 or more years of follow-up. Recurrences occurred in 6 cases (16.6%).
    Conclusions: We consider SPA a benign tumor with progressive growth, which is occasionally painful. It occurs around age 40 years and occurs more often in female patients. Fine needle aspiration biopsy does not provide an adequate preoperative diagnosis. Recurrences are infrequent. Follow-up should be customized according to the pathologic findings. Malignant transformation may occur. Superficial parotidectomy with facial nerve preservation is the treatment of choice.
    MeSH term(s) Aged ; Female ; Humans ; Middle Aged ; Parotid Gland/pathology ; Salivary Gland Diseases/diagnosis ; Salivary Gland Diseases/surgery ; Sclerosis
    Language English
    Publishing date 2017-05
    Publishing country United States
    Document type Case Reports ; Journal Article ; Review
    ZDB-ID 392404-x
    ISSN 1531-5053 ; 0278-2391
    ISSN (online) 1531-5053
    ISSN 0278-2391
    DOI 10.1016/j.joms.2016.10.031
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Design and construction of a quadruple-resonance MAS NMR probe for investigation of extensively deuterated biomolecules.

    Collier, Kelsey A / Sengupta, Suvrajit / Espinosa, Catalina A / Kelly, John E / Kelz, Jessica I / Martin, Rachel W

    Journal of magnetic resonance (San Diego, Calif. : 1997)

    2017  Volume 285, Page(s) 8–17

    Abstract: Extensive deuteration is frequently used in solid-state NMR studies of biomolecules because it dramatically reduces both homonuclear ( ...

    Abstract Extensive deuteration is frequently used in solid-state NMR studies of biomolecules because it dramatically reduces both homonuclear (
    MeSH term(s) Algorithms ; Carbon Isotopes ; Deuterium/chemistry ; Electromagnetic Fields ; Nitrogen Isotopes ; Nuclear Magnetic Resonance, Biomolecular/instrumentation ; Protons
    Chemical Substances Carbon Isotopes ; Nitrogen Isotopes ; Protons ; Deuterium (AR09D82C7G)
    Language English
    Publishing date 2017-10-12
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1469665-4
    ISSN 1096-0856 ; 1557-8968 ; 1090-7807 ; 0022-2364
    ISSN (online) 1096-0856 ; 1557-8968
    ISSN 1090-7807 ; 0022-2364
    DOI 10.1016/j.jmr.2017.10.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Modulation of cross polarization in motionally averaged solids by Variable Angle Spinning NMR.

    Espinosa, Catalina A / Thureau, Pierre / Shapiro, Rebecca A / Litvak, Ilya M / Martin, Rachel W

    Chemical physics letters

    2011  Volume 508, Issue 4-6, Page(s) 314–319

    Abstract: In systems where the dipolar couplings are partially averaged by molecular motion, cross-polarization is modulated by sample spinning. The cross-polariation efficiency in Variable Angle Spinning (VAS) and Switched Angle Spinning (SAS) experiments on ... ...

    Abstract In systems where the dipolar couplings are partially averaged by molecular motion, cross-polarization is modulated by sample spinning. The cross-polariation efficiency in Variable Angle Spinning (VAS) and Switched Angle Spinning (SAS) experiments on mobile samples is therefore strongly dependent on the spinning angle. We describe simulations and experimental measurements of these effects over a range of spinning angles from 0° to 90°.
    Language English
    Publishing date 2011-07-11
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1466293-0
    ISSN 0009-2614
    ISSN 0009-2614
    DOI 10.1016/j.cplett.2011.04.043
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Multiomic signals associated with maternal epidemiological factors contributing to preterm birth in low- and middle-income countries.

    Espinosa, Camilo A / Khan, Waqasuddin / Khanam, Rasheda / Das, Sayan / Khalid, Javairia / Pervin, Jesmin / Kasaro, Margaret P / Contrepois, Kévin / Chang, Alan L / Phongpreecha, Thanaphong / Michael, Basil / Ellenberger, Mathew / Mehmood, Usma / Hotwani, Aneeta / Nizar, Ambreen / Kabir, Furqan / Wong, Ronald J / Becker, Martin / Berson, Eloise /
    Culos, Anthony / De Francesco, Davide / Mataraso, Samson / Ravindra, Neal / Thuraiappah, Melan / Xenochristou, Maria / Stelzer, Ina A / Marić, Ivana / Dutta, Arup / Raqib, Rubhana / Ahmed, Salahuddin / Rahman, Sayedur / Hasan, A S M Tarik / Ali, Said M / Juma, Mohamed H / Rahman, Monjur / Aktar, Shaki / Deb, Saikat / Price, Joan T / Wise, Paul H / Winn, Virginia D / Druzin, Maurice L / Gibbs, Ronald S / Darmstadt, Gary L / Murray, Jeffrey C / Stringer, Jeffrey S A / Gaudilliere, Brice / Snyder, Michael P / Angst, Martin S / Rahman, Anisur / Baqui, Abdullah H / Jehan, Fyezah / Nisar, Muhammad Imran / Vwalika, Bellington / Sazawal, Sunil / Shaw, Gary M / Stevenson, David K / Aghaeepour, Nima

    Science advances

    2023  Volume 9, Issue 21, Page(s) eade7692

    Abstract: Preterm birth (PTB) is the leading cause of death in children under five, yet comprehensive studies are hindered by its multiple complex etiologies. Epidemiological associations between PTB and maternal characteristics have been previously described. ... ...

    Abstract Preterm birth (PTB) is the leading cause of death in children under five, yet comprehensive studies are hindered by its multiple complex etiologies. Epidemiological associations between PTB and maternal characteristics have been previously described. This work used multiomic profiling and multivariate modeling to investigate the biological signatures of these characteristics. Maternal covariates were collected during pregnancy from 13,841 pregnant women across five sites. Plasma samples from 231 participants were analyzed to generate proteomic, metabolomic, and lipidomic datasets. Machine learning models showed robust performance for the prediction of PTB (AUROC = 0.70), time-to-delivery (
    MeSH term(s) Infant, Newborn ; Pregnancy ; Child ; Humans ; Female ; Premature Birth/epidemiology ; Developing Countries ; Multiomics ; Proteomics ; Chemokines, CC
    Chemical Substances Chemokines, CC
    Language English
    Publishing date 2023-05-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.ade7692
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Circadian and Sex Differences After Acute High-Altitude Exposure: Are Early Acclimation Responses Improved by Blue Light?

    Silva-Urra, Juan A / Núñez-Espinosa, Cristian A / Niño-Mendez, Oscar A / Gaitán-Peñas, Héctor / Altavilla, Cesare / Toro-Salinas, Andrés / Torrella, Joan R / Pagès, Teresa / Javierre, Casimiro F / Behn, Claus / Viscor, Ginés

    Wilderness & environmental medicine

    2015  Volume 26, Issue 4, Page(s) 459–471

    Abstract: Objective: The possible effects of blue light during acute hypoxia and the circadian rhythm on several physiological and cognitive parameters were studied.: Methods: Fifty-seven volunteers were randomly assigned to 2 groups: nocturnal (2200-0230 ... ...

    Abstract Objective: The possible effects of blue light during acute hypoxia and the circadian rhythm on several physiological and cognitive parameters were studied.
    Methods: Fifty-seven volunteers were randomly assigned to 2 groups: nocturnal (2200-0230 hours) or diurnal (0900-1330 hours) and exposed to acute hypoxia (4000 m simulated altitude) in a hypobaric chamber. The participants were illuminated by blue LEDs or common artificial light on 2 different days. During each session, arterial oxygen saturation (Spo2), blood pressure, heart rate variability, and cognitive parameters were measured at sea level, after reaching the simulated altitude of 4000 m, and after 3 hours at this altitude.
    Results: The circadian rhythm caused significant differences in blood pressure and heart rate variability. A 4% to 9% decrease in waking nocturnal Spo2 under acute hypoxia was observed. Acute hypoxia also induced a significant reduction (4%-8%) in systolic pressure, slightly more marked (up to 13%) under blue lighting. Women had significantly increased systolic (4%) and diastolic (12%) pressures under acute hypoxia at night compared with daytime pressure; this was not observed in men. Some tendencies toward better cognitive performance (d2 attention test) were seen under blue illumination, although when considered together with physiological parameters and reaction time, there was no conclusive favorable effect of blue light on cognitive fatigue suppression after 3 hours of acute hypobaric hypoxia.
    Conclusions: It remains to be seen whether longer exposure to blue light under hypobaric hypoxic conditions would induce favorable effects against fatigue.
    MeSH term(s) Acclimatization/physiology ; Adult ; Altitude ; Altitude Sickness/physiopathology ; Altitude Sickness/psychology ; Attention/physiology ; Circadian Rhythm/physiology ; Female ; Heart Rate/physiology ; Humans ; Hypoxia/physiopathology ; Light ; Male
    Language English
    Publishing date 2015-12
    Publishing country United States
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 1238909-2
    ISSN 1545-1534 ; 1080-6032
    ISSN (online) 1545-1534
    ISSN 1080-6032
    DOI 10.1016/j.wem.2015.06.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top