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1.
Emergencias ; 36(4): 271-280, 2024 Jun.
Article in Spanish, English | MEDLINE | ID: mdl-39234833

ABSTRACT

OBJECTIVE: To estimate the prevalence of inappropriate use of prophylaxis to prevent venous thromboembolism (VTE) in patients with medical diseases admitted to hospital from the emergency department. To explore variables associated with inappropriate thromboprophylaxis. METHODS: Prospective multicenter cohort study in 15 hospital emergency departments. We included patients admitted for a medical condition during 7 days in the first quarter of 2022. We assessed risk for VTE with the Padua Prediction Score (PPS). Inappropriate thromboprophylaxis was defined by failure to prescribe prophylaxis in patients with a high-risk PPS assessment unless there were absolute contraindications (active bleeding or severe thrombopenia) or, alternatively, the prescription of prophylaxis in patients with a low-risk PPS assessment or absolute contraindications. A logistic regression model was adjusted for risk level to identify variables associated with inappropriate use of thromboprophylaxis. RESULTS: Of a total of 630 patients included, 450 (71.4%) had PPS scores indicating high risk for VTE; 180 patients were at low risk. Thromboprophylaxis was inappropriate in 248 patients (39.4%): 165 high-risk patients who received no prophylaxis, 82 low-risk patients who were nonetheless treated, and 1 patient who was treated in spite of severe thrombopenia. Odds ratios (ORs) revealed that the variables associated with inappropriate use of thromboprophylaxis were trauma or recent surgery (OR, 5.53; 95% CI, 1.58-19.34), presence of factors indicating risk for bleeding (OR, 2.61; 95% CI, 1.44-4.73), and hospital admission for either urinary tract infection (OR, 2.29; 95% CI, 1.07-4.87) or gastrointestinal disease (OR, 4.30; 95% CI, 1.71-10.85). CONCLUSIONS: The inappropriate use of thromboprophylaxis in Spanish emergency departments is high and associated with certain clinical characteristics.


OBJETIVO: Evaluar la inadecuación de la tromboprofilaxis farmacológica, según la escala Padua (PPS), para prevenir la enfermedad tromboembólica venosa (ETV) entre los pacientes que ingresan desde el servicio de urgencias hospitalario (SUH) por patología médica, así como las variables asociadas a su uso inadecuado. METODO: Estudio de cohortes, prospectivo, multicéntrico donde participaron 15 SUH. Se incluyeron los pacientes atendidos que requirieron ingreso por enfermedad médica durante 7 días del primer trimestre de 2022. La inadecuación de la tromboprofilaxis farmacológica se definió como la no utilización en pacientes clasificados por PPS de alto riesgo sin contraindicaciones absolutas para su uso (hemorragia activa o trombopenia grave) o su utilización en pacientes de riesgo bajo o con contraindicaciones absolutas. Se ajustó, para cada grupo de riesgo, un modelo de regresión logística para identificar las variables asociadas a la inadecuación. RESULTADOS: Se incluyeron 630 pacientes, 450 (71,4%) tenían riesgo alto y 180 (28,6%) riesgo bajo para ETV según la PPS. De ellos, la tromboprofilaxis fue inadecuada en 248 pacientes (39,4%) (165 tenían riesgo alto pero no recibieron tromboprofilaxis, 1 la recibió teniendo trombopenia grave y 82 tenían riesgo bajo pero recibieron tromboprofilaxis). Las variables asociadas con la inadecuación en pacientes de alto riesgo fueron trauma o cirugía recientes con odds ratio (OR) de OR 5,53 (IC 95%: 1,58-19,34), presencia de factores de riesgo hemorrágico con OR de 2,61 (IC 95%: 1,44-4,73), e infección del tracto urinario con OR de 2,29 (IC 95%: 1,07-4,87) y enfermedad gastrointestinal con OR de 4,30 (IC 95%: 1,71-10,85) como motivos de ingreso. CONCLUSIONES: En los SUH españoles, el uso inadecuado de la tromboprofilaxis farmacológica es elevado. Algunas características clínicas se asocian al uso inadecuado de dicha tromboprofilaxis.


Subject(s)
Anticoagulants , Emergency Service, Hospital , Venous Thromboembolism , Humans , Venous Thromboembolism/prevention & control , Venous Thromboembolism/epidemiology , Venous Thromboembolism/etiology , Spain/epidemiology , Prospective Studies , Male , Female , Aged , Middle Aged , Anticoagulants/therapeutic use , Risk Assessment , Inappropriate Prescribing/statistics & numerical data , Inappropriate Prescribing/prevention & control , Hospitalization , Aged, 80 and over , Logistic Models , Risk Factors , Adult
2.
Nutrients ; 16(16)2024 Aug 18.
Article in English | MEDLINE | ID: mdl-39203888

ABSTRACT

Although gut dysbiosis is associated with cow's milk allergy (CMA), causality remains uncertain. This study aimed to identify specific bacterial signatures that influence the development and outcome of the disease. We also investigated the effect of hypoallergenic formula (HF) consumption on the gut microbiome of milk-allergic children. 16S rRNA amplicon sequencing was applied to characterize the gut microbiome of 32 milk-allergic children aged 5-12 years and 36 age-matched healthy controls. We showed that the gut microbiome of children with CMA differed significantly from that of healthy children, regardless of whether they consumed cow's milk. Compared to that of healthy cow's milk consumers, it was depleted in Bifidobacterium, Coprococcus catus, Monoglobus, and Lachnospiraceae GCA-900066575, while being enriched in Oscillibacter valericigenes, Negativibacillus massiliensis, and three genera of the Ruminococcaceae family. Of these, only the Ruminococcaceae taxa were also enriched in healthy children not consuming cow's milk. Furthermore, the gut microbiome of children who developed tolerance and had received an HF was similar to that of healthy children, whereas that of children who had not received an HF was significantly different. Our results demonstrate that specific gut microbiome signatures are associated with CMA, which differ from those of dietary milk elimination. Moreover, HF consumption affects the gut microbiome of children who develop tolerance.


Subject(s)
Gastrointestinal Microbiome , Milk Hypersensitivity , Milk , RNA, Ribosomal, 16S , Humans , Milk Hypersensitivity/microbiology , Child, Preschool , Child , Female , Male , Animals , RNA, Ribosomal, 16S/genetics , Milk/microbiology , Dysbiosis/microbiology , Bacteria/classification , Bacteria/genetics , Cattle , Case-Control Studies , Feces/microbiology
3.
Farm Hosp ; 2024 Aug 23.
Article in English, Spanish | MEDLINE | ID: mdl-39181756

ABSTRACT

INTRODUCTION: The aim of this study was to assess the implementation of safe medication practices in hospital emergency services, in order to understand the points of greatest risk as well as the safety challenges faced by these departments, and to plan collaboratively improvement initiatives. METHOD: Multicentric and descriptive study based on completion of the "Medication safety self-assessment of emergency services" from 5/16/2023 to 11/16/2023, at voluntarily participating emergency services. The survey contained 93 items grouped into 10 key elements. Mean score and mean percentages based on the maximum possible values for the overall survey, for the key elements and for each individual item of evaluation, were assessed. RESULTS: A total of 72 emergency services completed the questionnaire. The mean score obtained for the overall questionnaire was 428.3 points (51.1% of the maximum score). Results showed a large variation among the scores of the participating services (range: 164-620.5). Four key elements had values below 50%, corresponding to competence and training of professionals in safety practices (38.4%); incorporation of pharmacists in emergency departments (42.1%), availability and accessibility of information about patients (43.1%), and patient education (48.1%). The highest values corresponded to labeling, packaging, and naming of medications (69.2%) and communication of prescriptions and other medication information (64%). No differences were found between emergency services in the key elements according to the dependency or size of the hospital, or the type of service, except for the item referring to the incorporation of pharmacists in the emergency service, where differences were observed between hospitals with less than 200 beds (28.9%) and those with more than 500 (52.2%). CONCLUSION: The application of the specific self-assessment questionnaire has made it possible to identify safety practices that are insufficiently implemented into emergency services in our country and to identify critical points for improvement for which planning collaborative initiatives to reduce medication errors in these departments should become a priority.

4.
Int J Mol Sci ; 25(14)2024 Jul 16.
Article in English | MEDLINE | ID: mdl-39063014

ABSTRACT

Acute lymphoblastic leukemia (ALL) is the most common childhood cancer. Current chemotherapy treatment regimens have improved survival rates to approximately 80%; however, resistance development remains the primary cause of treatment failure, affecting around 20% of cases. Some studies indicate that loss of the phosphatase and tensin homolog (PTEN) leads to deregulation of the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway, increasing the expression of proteins involved in chemoresistance. PTEN loss results in deregulation of the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and induces hypoxia-inducible factor 1-alpha (HIF-1α) expression in various cancers. Additionally, it triggers upregulation of the Yin Yang 1 (YY1) transcription factor, leading to chemoresistance mediated by glycoprotein p-170 (Gp-170). The aim of this study was to investigate the role of the PTEN/NF-κB axis in YY1 regulation via HIF-1α and its involvement in ALL. A PTEN inhibitor was administered in RS4;11 cells, followed by the evaluation of PTEN, NF-κB, HIF-1α, YY1, and Gp-170 expression, along with chemoresistance assessment. PTEN, HIF-1α, and YY1 expression levels were assessed in the peripheral blood mononuclear cells (PBMC) from pediatric ALL patients. The results reveal that the inhibition of PTEN activity significantly increases the expression of pAkt and NF-κB, which is consistent with the increase in the expression of HIF-1α and YY1 in RS4;11 cells. In turn, this inhibition increases the expression of the glycoprotein Gp-170, affecting doxorubicin accumulation in the cells treated with the inhibitor. Samples from pediatric ALL patients exhibit PTEN expression and higher HIF-1α and YY1 expression compared to controls. PTEN/Akt/NF-κB axis plays a critical role in the regulation of YY1 through HIF-1α, and this mechanism contributes to Gp-170-mediated chemoresistance in pediatric ALL.


Subject(s)
Drug Resistance, Neoplasm , Hypoxia-Inducible Factor 1, alpha Subunit , PTEN Phosphohydrolase , Precursor Cell Lymphoblastic Leukemia-Lymphoma , YY1 Transcription Factor , Humans , PTEN Phosphohydrolase/metabolism , PTEN Phosphohydrolase/genetics , YY1 Transcription Factor/metabolism , YY1 Transcription Factor/genetics , Hypoxia-Inducible Factor 1, alpha Subunit/metabolism , Hypoxia-Inducible Factor 1, alpha Subunit/genetics , Drug Resistance, Neoplasm/genetics , Precursor Cell Lymphoblastic Leukemia-Lymphoma/metabolism , Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy , Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics , Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology , Child , Cell Line, Tumor , Signal Transduction/drug effects , NF-kappa B/metabolism , Male , Female
5.
Article in English | MEDLINE | ID: mdl-38958914

ABSTRACT

Carnobacterium maltaromaticum is a species of lactic acid bacteria (LAB) that has been isolated from various natural environments. It is well-known for producing a diverse spectrum of bacteriocins with potential biotechnological applications. In the present study, a new psychrotolerant strain of C. maltaromaticum CM22 is reported, isolated from a salmon gut sample and producing a variant of the bacteriocin piscicolin 126 that has been named piscicolin CM22. After identification by 16S rRNA gene, this strain has been genomically characterized by sequencing and assembling its complete genome. Moreover, its bacteriocin was purified and characterized. In vitro tests demonstrated that both the strain and its bacteriocin possess antimicrobial activity against several Gram-positive bacteria of interest in human and animal health, such as Listeria monocytogenes, Clostridium perfringens, or Enterococcus faecalis. However, this bacteriocin did not produce any antimicrobial effect on Gram-negative species. The study of its genome showed the genetic structure of the gene cluster that encodes the bacteriocin, showing a high degree of homology to the gene cluster of piscicolin 126 described in other C. maltaromaticum. Although more studies are necessary concerning its functional properties, this new psychrotolerant strain C. maltaromaticum CM22 and its bacteriocin could be considered an interesting candidate with potential application in agri-food industry.

6.
Int J Mol Sci ; 25(13)2024 Jul 08.
Article in English | MEDLINE | ID: mdl-39000607

ABSTRACT

Natural killer (NK) cells play a crucial role in innate immunity, particularly in combating infections and tumors. However, in hematological cancers, NK cells often exhibit impaired functions. Therefore, it is very important to activate its endosomal Toll-like receptors (TLRs) as a potential strategy to restore its antitumor activity. We stimulated NK cells from the peripheral blood mononuclear cells from children with acute lymphoblastic leukemia and NK cells isolated, and the NK cells were stimulated with specific TLR ligands (Poly I:C, Imiquimod, R848, and ODN2006) and we evaluated changes in IFN-γ, CD107a, NKG2D, NKp44 expression, Granzyme B secretion, cytokine/chemokine release, and cytotoxic activity. Results revealed that Poly I:C and Imiquimod enhanced the activation of both immunoregulatory and cytotoxic NK cells, increasing IFN-γ, CD107a, NKG2D, and NKp44 expression. R848 activated immunoregulatory NK cells, while ODN2006 boosted CD107a, NKp44, NKG2D, and IFN-γ secretion in cytotoxic NK cells. R848 also increased the secretion of seven cytokines/chemokines. Importantly, R848 and ODN 2006 significantly improved cytotoxicity against leukemic cells. Overall, TLR stimulation enhances NK cell activation, suggesting TLR8 (R848) and TLR9 (ODN 2006) ligands as promising candidates for antitumor immunotherapy.


Subject(s)
Imiquimod , Killer Cells, Natural , Lymphocyte Activation , Poly I-C , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Toll-Like Receptors , Humans , Killer Cells, Natural/immunology , Killer Cells, Natural/drug effects , Killer Cells, Natural/metabolism , Precursor Cell Lymphoblastic Leukemia-Lymphoma/immunology , Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy , Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology , Poly I-C/pharmacology , Lymphocyte Activation/drug effects , Lymphocyte Activation/immunology , Imiquimod/pharmacology , Toll-Like Receptors/metabolism , Toll-Like Receptors/agonists , Child , Oligodeoxyribonucleotides/pharmacology , Cytokines/metabolism , Female , Interferon-gamma/metabolism , Male , Imidazoles/pharmacology , Cytotoxicity, Immunologic/drug effects , Child, Preschool , Toll-Like Receptor Agonists
7.
Medicina (Kaunas) ; 60(7)2024 Jun 27.
Article in English | MEDLINE | ID: mdl-39064489

ABSTRACT

Muscular dystrophies (MDs) are a heterogeneous group of diseases of genetic origin characterized by progressive skeletal muscle degeneration and weakness. There are several types of MDs, varying in terms of age of onset, severity, and pattern of the affected muscles. However, all of them worsen over time, and many patients will eventually lose their ability to walk. In addition to skeletal muscle effects, patients with MDs may present cardiac and respiratory disorders, generating complications that could lead to death. Interdisciplinary management is required to improve the surveillance and quality of life of patients with an MD. At present, pharmacological therapy is only available for Duchene muscular dystrophy (DMD)-the most common type of MD-and is mainly based on the use of corticosteroids. Other MDs caused by alterations in dystrophin-associated proteins (DAPs) are less frequent but represent an important group within these diseases. Pharmacological alternatives with clinical potential in patients with MDs and other proteins associated with dystrophin have been scarcely explored. This review focuses on drugs and molecules that have shown beneficial effects, mainly in experimental models involving alterations in DAPs. The mechanisms associated with the effects leading to promising results regarding the recovery or maintenance of muscle strength and reduction in fibrosis in the less-common MDs (i.e., with respect to DMD) are explored, and other therapeutic targets that could contribute to maintaining the homeostasis of muscle fibers, involving different pathways, such as calcium regulation, hypertrophy, and maintenance of satellite cell function, are also examined. It is possible that some of the drugs explored here could be used to affordably improve the muscular function of patients until a definitive treatment for MDs is developed.


Subject(s)
Muscular Dystrophies , Humans , Muscular Dystrophies/drug therapy , Muscular Dystrophies/physiopathology , Dystrophin , Muscle, Skeletal/drug effects , Muscle, Skeletal/physiopathology , Muscular Dystrophy, Duchenne/drug therapy , Muscular Dystrophy, Duchenne/physiopathology , Dystrophin-Associated Protein Complex
10.
Front Oncol ; 14: 1337954, 2024.
Article in English | MEDLINE | ID: mdl-38634053

ABSTRACT

Background: Recurrent genetic alterations contributing to leukemogenesis have been identified in pediatric B-cell Acute Lymphoblastic Leukemia (B-ALL), and some are useful for refining classification, prognosis, and treatment selection. IKZF1plus is a complex biomarker associated with a poor prognosis. It is characterized by IKZF1 deletion coexisting with PAX5, CDKN2A/2B, or PAR1 region deletions. The mutational spectrum and clinical impact of these alterations have scarcely been explored in Mexican pediatric patients with B-ALL. Here, we report the frequency of the IKZF1plus profile and the mutational spectrum of IKZF1, PAX5, CDKN2A/2B, and ERG genes and evaluate their impact on overall survival (OS) in a group of patients with B-ALL. Methods: A total of 206 pediatric patients with de novo B-ALL were included. DNA was obtained from bone marrow samples at diagnosis before treatment initiation. A custom-designed next-generation sequencing panel was used for mutational analysis. Kaplan-Meier analysis was used for OS estimation. Results: We identified the IKZF1plus profile in 21.8% of patients, which was higher than that previously reported in other studies. A significantly older age (p=0.04), a trend toward high-risk stratification (p=0.06), and a decrease in 5-year Overall Survival (OS) (p=0.009) were observed, although heterogeneous treatment protocols in our cohort would have impacted OS. A mutation frequency higher than that reported was found for IKZF1 (35.9%) and CDKN2A/2B (35.9%) but lower for PAX5 (26.6%). IKZF1MUT group was older at diagnosis (p=0.0002), and most of them were classified as high-risk (73.8%, p=0.02), while patients with CDKN2A/2BMUT had a higher leukocyte count (p=0.01) and a tendency toward a higher percentage of blasts (98.6%, >50% blasts, p=0.05) than the non-mutated patients. A decrease in OS was found in IKZF1MUT and CDKN2A/2BMUT patients, but the significance was lost after IKZF1plus was removed. Discussion: Our findings demonstrated that Mexican patients with B-ALL have a higher prevalence of genetic markers associated with poor outcomes. Incorporating genomic methodologies into the diagnostic process, a significant unmet need in low- and mid-income countries, will allow a comprehensive identification of relevant alterations, improving disease classification, treatment selection, and the general outcome.

11.
Microorganisms ; 12(3)2024 Feb 20.
Article in English | MEDLINE | ID: mdl-38543474

ABSTRACT

Zika virus (ZIKV) can cause neurological issues in infants. To provide protection, neutralizing antibodies should be transferred from the mother to the infant. We conducted a study at the Hospital General de Pochutla, Oaxaca, Mexico. Samples were collected from mothers (blood and breast milk) and infants (saliva and dried blood spots) within the first 12 postnatal hours (December 2017 to February 2018) and tested for ZIKV total and neutralizing antibodies as well as ZIKV-PCR. Microcephaly was evaluated according to INTERGROWTH-21st standards. Maternal IgG seroprevalence was 28.4% with 10.4% active infection, while infant IgG seroprevalence was 5.5% with 2.4% active infection. There were two cases of virolactia, and 6.3% of the infant saliva samples tested positive for ZIKV. Additionally, 18.3% of the infants were in a cephalic perimeter percentile lower than 10 and had an association between microcephaly and serology or a PCR between 8.6 and 60.9%. The infant blood samples had neutralizing antibodies, indicating intrauterine protection. Microcephaly was correlated with serology or PCR, but in our study population, non-ZIKV factors may be involved as well. Low ZIKV infection values in breast milk mean that breastfeeding is safe in most of the mothers and infants of the endemic area studied.

12.
Diagnostics (Basel) ; 14(6)2024 Mar 12.
Article in English | MEDLINE | ID: mdl-38535021

ABSTRACT

Numerous papers report the efficiency of the automatic interpretation capabilities of commercial algorithms. Unfortunately, these algorithms are proprietary, and academia has no means of directly contributing to these results. In fact, nothing at the same stage of development exists in academia. Despite the extensive research in ECG signal processing, from signal conditioning to expert systems, a cohesive single application for clinical use is not ready yet. This is due to a serious lack of coordination in the academic efforts, which involve not only algorithms for signal processing, but also the signal acquisition equipment itself. For instance, the different sampling rates and the different noise levels frequently found in the available signal databases can cause severe incompatibility problems when the integration of different algorithms is desired. Therefore, this work aims to solve this incompatibility problem by providing the academic community with a diagnostic-grade electrocardiograph. The intention is to create a new standardized ECG signals database in order to address the automatic interpretation problem and create an electrocardiography system that can fully assist clinical practitioners, as the proprietary systems do. Achieving this objective is expected through an open and coordinated collaboration platform for which a webpage has already been created.

13.
Front Oncol ; 14: 1304633, 2024.
Article in English | MEDLINE | ID: mdl-38420017

ABSTRACT

Background: A heterogeneous geographic distribution of childhood acute lymphoblastic leukemia (ALL) cases has been described, possibly, related to the presence of different environmental factors. The aim of the present study was to explore the geographical distribution of childhood ALL cases in Greater Mexico City (GMC). Methods: A population-based case-control study was conducted. Children <18 years old, newly diagnosed with ALL and residents of GMC were included. Controls were patients without leukemia recruited from second-level public hospitals, frequency-matched by sex, age, and health institution with the cases. The residence address where the patients lived during the last year before diagnosis (cases) or the interview (controls) was used for geolocation. Kulldorff's spatial scan statistic was used to detect spatial clusters (SCs). Relative risks (RR), associated p-value and number of cases included for each cluster were obtained. Results: A total of 1054 cases with ALL were analyzed. Of these, 408 (38.7%) were distributed across eight SCs detected. A relative risk of 1.61 (p<0.0001) was observed for the main cluster. Similar results were noted for the remaining seven ones. Additionally, a proximity between SCs, electrical installations and petrochemical facilities was observed. Conclusions: The identification of SCs in certain regions of GMC suggest the possible role of environmental factors in the etiology of childhood ALL.

14.
Allergol. immunopatol ; 52(1): 93-96, 01 jan. 2024. ilus
Article in English | IBECS | ID: ibc-229181

ABSTRACT

Allergic contact dermatitis (ACD) is a more frequent pathology in adults than in children, because, in most cases, allergic sensitization requires a prolonged exposure time to the allergen, mostly months or years. In fact, the actual incidence and prevalence of ACD in children and adolescents is unknown. However, there is a hypothesis that ACD is increasing in the pediatric population. Among the allergens involved in ACD, the frequency of paraphenylenediamine (PPDA) is increasing. PPDA is one of the five most common contact allergens in the general population and one of the 10 most common contact allergens in children. The most relevant sources today are henna tattoos and hair dyes. Currently, European Union legislation limits the use of PPDA in hair dyes and prohibits its use in henna tattoos. Despite this legislation, the use of henna tattoos with PPDA is becoming more frequent in younger ages. We report an early presentation of ACD by PPDA, with a permanent hypopigmented skin area as an aftermath, in a 7-year-old male child. We believe that health authorities should advise against making these tattoos in children (AU)


Subject(s)
Humans , Male , Child , Dermatitis, Contact/etiology , Dermatitis, Contact/diagnosis
15.
Foods ; 13(2)2024 Jan 05.
Article in English | MEDLINE | ID: mdl-38254484

ABSTRACT

Currently, the combination of fingerprinting methodology and environmentally friendly and economical analytical instrumentation is becoming increasingly relevant in the food sector. In this study, a highly versatile portable analyser based on Spatially Offset Raman Spectroscopy (SORS) obtained fingerprints of edible vegetable oils (sunflower and olive oils), and the capability of such fingerprints (obtained quickly, reliably and without any sample treatment) to discriminate/classify the analysed samples was evaluated. After data treatment, not only unsupervised pattern recognition techniques (as HCA and PCA), but also supervised pattern recognition techniques (such as SVM, kNN and SIMCA), showed that the main effect on discrimination/classification was associated with those regions of the Raman fingerprint related to free fatty acid content, especially oleic and linoleic acid. These facts allowed the discernment of the original raw material used in the oil's production. In all the models established, reliable qualimetric parameters were obtained.

16.
Microorganisms ; 12(1)2024 Jan 13.
Article in English | MEDLINE | ID: mdl-38257988

ABSTRACT

Studies on the human virome based on the application of metagenomic approaches involve overcoming a series of challenges and limitations inherent not only to the biological features of viruses, but also to methodological pitfalls which different approaches have tried to minimize. These approaches fall into two main categories: bulk-metagenomes and virus-like particle (VLP) enrichment. In order to address issues associated with commonly used experimental procedures to assess the degree of reliability, representativeness, and reproducibility, we designed a comparative analysis applied to three experimental protocols, one based on bulk-metagenomes and two based on VLP enrichment. These protocols were applied to stool samples from 10 adult participants, including two replicas per protocol and subject. We evaluated the performances of the three methods, not only through the analysis of the resulting composition, abundance, and diversity of the virome via taxonomical classification and type of molecule (DNA versus RNA, single stranded vs. double stranded), but also according to how the a priori identical replicas differed from each other according to the extraction methods used. Our results highlight the strengths and weaknesses of each approach, offering valuable insights and tailored recommendations for drawing reliable conclusions based on specific research goals.

17.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1559785

ABSTRACT

Introducción: El glutamato monosódico se emplea en humanos desde el pasado siglo como potenciador del sabor. Su inoculación parenteral en murinos durante el período neonatal causa lesiones en varios núcleos hipotalámicos. Objetivo: Describir los efectos del glutamato monosódico sobre el sistema neuroendocrinoinmune en murinos. Metodos: Se realizó una revisión de artículos de libre acceso en las bases de datos PubMed y SciELO entre enero de 2013 y julio de 2020. También se examinó el texto básico de la asignatura Sangre y Sistema Inmune de la carrera de medicina. Desarrollo: Con independencia de su efecto adictivo, varios estudios defienden la inocuidad del glutamato monosódico. Sin embargo, este compuesto puede atravesar la barrera hematoencefálica de neonatos de murinos, y ocasionar trastornos metabólicos, reproductivos y del sistema inmune. Conclusiones: El glutamato monosódico en roedores causa alteraciones en los órganos que integran el suprasistema neuroendocrinoinmune y, por tanto, afecta sus funciones homeostáticas. Los mecanismos patogénicos no se conocen con exactitud.


Introduction: Monosodium glutamate has been used in humans since the last century as a flavor enhancer. Its parenteral inoculation in murine during the neonatal period causes lesions in several hypothalamic nuclei. Objective: To describe the effects of monosodium glutamate on the neuroendocrine immune system in murine samples. Methods: A review of open access articles in the PubMed and SciELO databases was conducted between January 2013 and July 2020. The basic text of the Blood and Immune System course of the medical school was also reviewed. Development: Regardless of its addictive effect, several studies defend the safety of monosodium glutamate. However, this compound can cross the blood-brain barrier of murine neonates, causing metabolic, reproductive and immune system disorders. Conclusions: Monosodium glutamate in rodents causes alterations in the organs that make up the neuroendocrine-immune suprasystem and, therefore, affects their homeostatic functions. The pathogenic mechanisms are not known exactly.

18.
Article in English | MEDLINE | ID: mdl-38055380

ABSTRACT

The genus Bartonella encompasses 38 validated species of Gram-negative, facultative intracellular bacteria that colonize the endothelial cells and erythrocytes of a wide spectrum of mammals. To date, 12 Bartonella species have been recorded infecting humans, causing diseases of long historical characterization, such as cat scratch fever and trench fever, and emerging bartonellosis that mainly affect animal health professionals. For this reason, this study aimed to report a documented case of Bartonella bovis infecting a veterinarian from Mexico by the amplification, sequencing and phylogenetic reconstruction of the citrate synthase (gltA) and the RNA polymerase beta-subunit (rpoB) genes, and to report the natural course of this infection. To our knowledge, this work is the first to report the transmission of B. bovis via needlestick transmission to animal health workers in Latin America.


Subject(s)
Bartonella Infections , Bartonella , Veterinarians , Animals , Humans , Mexico , Phylogeny , Endothelial Cells , Bartonella/genetics , Bartonella Infections/diagnosis , Bartonella Infections/veterinary , DNA , Mammals/genetics
19.
Cureus ; 15(10): e46372, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37790870

ABSTRACT

Coronary artery bypass graft (CABG) surgery has a major role in the management of obstructive coronary artery disease, especially in patients with diabetes or multiple vessel disease. Currently, in the USA, the annual incidence rate of CABG has been reported to be approximately 400,000. Overall, gastrointestinal (GI) complications occur in less than 2% of patients undergoing open-heart surgery. Acute colonic pseudo-obstruction, also known as Ogilvie's syndrome, is a disorder characterized by dilatation of the colon in the absence of an anatomic lesion that obstructs the flow of intestinal contents. This condition occurs in 0.06% of patients following cardiac surgery, and in CABG patients, the reported incidence is approximately 0.046%. In this report, we discuss a case of a patient who developed Ogilvie's syndrome after undergoing CABG.

20.
Behav Sci (Basel) ; 13(10)2023 Sep 26.
Article in English | MEDLINE | ID: mdl-37887445

ABSTRACT

BACKGROUND: Major depressive disorder (MDD) is a mood disorder with a high prevalence worldwide that causes disability and, in some cases, suicide. Although environmental factors play a crucial role in this disease, other biological factors may predispose individuals to MDD. Genetic and environmental factors influence mental disorders; therefore, a potential combined effect of MAO-A/MAO-B gene variants may be a target for the study of susceptibility to MDD. This study aimed to evaluate the effects of MAO-A and -B gene variants when combined with adverse childhood experiences (ACEs) on the susceptibility and severity of symptoms in MDD. METHODS: A case-control study was performed, including 345 individuals, 175 MDD cases and 170 controls. Genotyping was performed using real-time PCR with hydrolysis probes. The analysis of the rs1465107 and rs1799836 gene variants of MAO-A and -B, respectively, was performed either alone or in combination with ACEs on the severity of depression, as determined through specific questionnaires, including DSM-IV diagnostic criteria for MDD. RESULTS: According to individual effects, the presence of ACEs, as well as the allele G of the rs1465107 of MAO-A, is associated with a higher severity of depression, more significantly in females. Furthermore, the allele rs1799836 G of MAO-B was associated with the severity of depression, even after being adjusted by gene variants and ACEs (IRR = 1.67, p = 0.01). In males, the allele rs1799836 G of MAO-B was shown to interact with SNP with ACEs (IRR = 1.70, p < 0.001). According to combined effect analyses, the severity of depression was associated with ACEs when combined with either allele rs1465107 of MAO-A or allele rs17993836 of MAO-B, whereas SNP risk association was influenced by gender. CONCLUSIONS: The severity of depression is related to either individual or combined effects of temperamental traits and genetic susceptibility of specific genes such as MAO-A and MAO-B.

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