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1.
Bol. latinoam. Caribe plantas med. aromát ; 23(4): 577-607, jul. 2024. ilus, graf, tab
Artículo en Español | LILACS | ID: biblio-1538069

RESUMEN

El presente estudio es una comparación del dolor abdominal producido por trastornos gastrointestinales, aliviado por Ageratina ligustrina , entre los grupos maya Tzeltal, Tzotzil y Q ́eqchi ́, el cual integró un enfoque etnomédico, etnobotánico y transcultural, comparando estudios previos con el presente trabajo de campo. Para evaluar la eficacia de Ageratina para aliviar el dolor abdominal, se realizó un inventario de las moléculas reportadas en esta especie, así como de su actividad farmacológica, a través de una revisión bibliográfica. Los resultados mostraron que la epidemiología del dolor producido por TGI, su etnobotánica y el modelo explicativo del dolor abdominal fueron similares entre grupos étnicos. Asimismo, se identificaron 27 moléculas con efectos antiinflamatorios y antinociceptivos, lo que podría explicar por qué esta especie es culturalmente importante para los pobladores maya Tzeltal, Tzotzil y Q ́eqch i ́ para el alivio del dolor abdominal, mientras que, desde el punto de vista biomédico, es una especie con potencial para inhibir el dolor visceral.


The current study is a comparison of the abdominal pain conception produced by gastrointestinal disorders, relieved by Ageratina ligustrina , among inhabitants of the Mayan Tzeltal, Tzotzil, and Q'eqchi' groups ethnomedical, ethnobotanical, and cross -cultural approaches were used to compare previous studies with the present field work. To evaluate the efficacy of A. ligustrina to relieve pain, also through a bibliographic review an inventory of the molecules present in this species was performed, as well as their pharmacological activity. The results showed that the epidemiology of pain produced by GID, its ethnobotany, and the explanatory model of abdominal pain are similar among ethnic groups. Likewise, 27 molecules with anti-inflammatory and anti-nociceptive effects were identified, which could explain why this species is culturally important for the Mayan Tzeltal, Tzotzil, and Q'eqchi' groups for the relief of abdominal pain, while, from a biomedical point of view, it is a species with potential to inhibit visceral pain.


Asunto(s)
Extractos Vegetales/uso terapéutico , Dolor Abdominal/tratamiento farmacológico , Ageratina , Etnobotánica , Enfermedades Gastrointestinales/tratamiento farmacológico , México
2.
Lett Appl Microbiol ; 77(5)2024 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-38769598

RESUMEN

Porphyromonas gingivalis is a nonmotile, obligate anaerobic, Gram-negative bacterium known for its association with periodontal disease and its involvement in systemic diseases such as atherosclerosis, cardiovascular disease, colon cancer, and Alzheimer's disease. This bacterium produces several virulence factors, including capsules, fimbriae, lipopolysaccharides, proteolytic enzymes, and hemagglutinins. A comparative genomic analysis revealed the open pangenome of P. gingivalis and identified complete type IV secretion systems in strain KCOM2805 and almost complete type VI secretion systems in strains KCOM2798 and ATCC49417, which is a new discovery as previous studies did not find the proteins involved in secretion systems IV and VI. Conservation of some virulence factors between different strains was observed, regardless of their genetic diversity and origin. In addition, we performed for the first time a reconstruction analysis of the gene regulatory network, identifying transcription factors and proteins involved in the regulatory mechanisms of bacterial pathogenesis. In particular, QseB regulates the expression of hemagglutinin and arginine deaminase, while Rex may suppress the release of gingipain through interactions with PorV and the formatum/nitrate transporter. Our study highlights the central role of conserved virulence factors and regulatory pathways, particularly QseB and Rex, in P. gingivalis and provides insights into potential therapeutic targets.


Asunto(s)
Redes Reguladoras de Genes , Genoma Bacteriano , Redes y Vías Metabólicas , Porphyromonas gingivalis , Factores de Virulencia , Porphyromonas gingivalis/genética , Porphyromonas gingivalis/metabolismo , Porphyromonas gingivalis/patogenicidad , Factores de Virulencia/genética , Redes y Vías Metabólicas/genética , Proteínas Bacterianas/genética , Proteínas Bacterianas/metabolismo , Humanos , Regulación Bacteriana de la Expresión Génica
3.
Proc Natl Acad Sci U S A ; 121(23): e2315218121, 2024 Jun 04.
Artículo en Inglés | MEDLINE | ID: mdl-38819999

RESUMEN

We introduce a function of the density of states for periodic Jacobi matrices on trees and prove a useful formula for it in terms of entries of the resolvent of the matrix and its "half-tree" restrictions. This formula is closely related to the one-dimensional Thouless formula and associates a natural phase with points in the bands. This allows streamlined proofs of the gap labeling and Aomoto index theorems. We give a complete proof of gap labeling and sketch the proof of the Aomoto index theorem. We also prove a version of this formula for the Anderson model on trees.

4.
Heliyon ; 10(10): e31048, 2024 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-38779001

RESUMEN

Background: Adaptive behavior is an important characteristic of people with intellectual disabilities, and it has been associated with a person's performance in social and work contexts. Indeed, adaptive behavior denotes what a person does independently, without help, support, reminders, or prompts. In Peru, available measures of adaptive behavior are commercial; thus, there is a need for an open-access tool to assess the adaptive behavior of people with intellectual disabilities. For this reason, the aim of the study was to design and develop a new Adaptive Behavior Test Battery for people from 13 to 60 years old with intellectual disabilities who have an interest in being part of the economically active population. Methods: A cross-sectional design was defined, starting with a qualitative approach to designing and constructing the item pool for the test battery. Then, quantitative indexes Aiken's V for content validity and Krippendorff's alpha for inter-observer reliability were estimated, resulting in a first version of the three subscales that comprised the test battery. The initial versions were tested on a sample of 566 persons with intellectual disabilities from two regions of Peru: Lima (Coast) and San Martín (Jungle). The internal structure was analyzed under a factor analysis approach, along with internal consistency measures of reliability. Further analyses of invariance regarding gender, region, and age were carried out. Results: Three observer subscales were proposed: Daily living activities (11 items), Instrumental skills (4 items), and Communication (9 items). All subscales showed excellent psychometric properties denoted by the Aiken's V coefficient, Krippendorff's alpha, factor analysis, internal consistency analysis, and invariance analyses. Conclusion: The developed a new Adaptive Behavior Test Battery is a useful tool for the measurement of adaptive behavior and the monitoring of social and labor inclusion programs for people with intellectual disabilities.

5.
Artículo en Inglés | MEDLINE | ID: mdl-38558339

RESUMEN

Winery effluents containing high ethanol concentrations and diverse organic matter are ideal substrates for producing medium-chain carboxylic acids via fermentation and chain elongation. However, the process needs to be better understood. This study presents novel insights into the bioconversion mechanisms of medium-chain carboxylic acids by correlating fermentation and chain elongation kinetic profiles with the study of microbial communities at different pH (5 to 7) conditions and temperatures (30 to 40 °C). It was found that high productivities of MCCA were obtained using a native culture and winery effluents as a natural substrate. Minor pH variations significantly affected the metabolic pathway of the microorganisms for MCCA production. The maximal productivities of hexanoic (715 mg/L/d) and octanoic (350 mg/L/d) acids were found at pH 6 and 35 °C. Results evidence that the presence of Clostridium, Bacteroides, and Negativicutes promotes the high productions of MCCA. The formation of heptanoic acid was favor when Mogibacterium and Burkholderia were present.

6.
Rev. colomb. cir ; 39(3): 407-420, 2024-04-24. fig, tab
Artículo en Español | LILACS | ID: biblio-1553805

RESUMEN

Introducción. El cáncer gástrico en Colombia es la segunda neoplasia más común en hombres y la cuarta en mujeres. En los últimos años se han descrito ampliamente los beneficios del abordaje laparoscópico en el cáncer gástrico frente a sangrado, recuperación postoperatoria y complicaciones, sin afectar los resultados oncológicos. Métodos. Estudio observacional retrospectivo de pacientes llevados a gastrectomía laparoscópica en la Clínica Universitaria Colombia durante un período de diez años, entre 2013 y 2023. Se describieron los resultados perioperatorios en cuanto a estancia hospitalaria, sangrado operatorio, duración del procedimiento, complicaciones, causas de reintervención y mortalidad en los primeros 30 días. Resultados. Se incluyeron 418 pacientes, 58,9 % hombres, con una edad promedio de 60,8 años. Se documentó un tiempo quirúrgico promedio de 228,7 minutos, con un sangrado de 150 ml. La media de ganglios linfáticos resecados fue de 26,1 ± 11,4. La estancia hospitalaria en promedio fue de 4 ± 4 días, y se registraron complicaciones en 104 sujetos, con una tasa promedio de 24 %, de las cuales 29 (27,4 %) obtuvieron una clasificación Clavien-Dindo IIIB. Conclusiones. La gastrectomía por laparoscopia en un centro de alto volumen y con cirujanos experimentados en Colombia, tiene resultados perioperatorios similares a lo reportado en la literatura mundial. Aún se requiere de estudios de mayor fuerza de asociación para establecer recomendaciones sobre el uso rutinario de este abordaje en patología maligna avanzada.


Introduction. Gastric cancer in Colombia is the second most common neoplasm in men and the fourth in women. In recent years, the benefits of the laparoscopic approach in gastric cancer against bleeding, postoperative recovery com and complications have been widely described, without affecting oncological results. Methods. Retrospective observational study of patients undergoing laparoscopic gastrectomy at the Clínica Universitaria Colombia over a period of ten years, between 2013 and 2023. Perioperative results were described in terms of hospital stay, operative bleeding, duration of the procedure, complications, causes of reintervention, and mortality in the first 30 days. Results. 418 patients were included, 58.9% men, with an average age of 60.88 years. An average surgical time of 228.7 minutes was documented, with a blood loss of 150 ml. The mean number of lymph nodes resected was 26.1 ± 11.4. The average hospital stay was 4 ± 4 days, and complications were recorded in 104 subjects, with an average rate of 24%, of which 29 (27.4%) obtained a Clavien-Dindo IIIB classification. Conclusions. Laparoscopic gastrectomy in a high-volume center and with experienced surgeons in Colombia has perioperative results similar to those reported in the world literature. Studies with greater strength of association are still required to establish recommendations on the routine use of this approach in advanced malignant pathology.


Asunto(s)
Humanos , Complicaciones Posoperatorias , Laparoscopía , Gastrectomía , Neoplasias Gástricas , Mortalidad , Procedimientos Quirúrgicos Mínimamente Invasivos
7.
Rev. colomb. cir ; 39(1): 155-160, 20240102. fig, tab
Artículo en Español | LILACS | ID: biblio-1526867

RESUMEN

Introducción. Los teratomas son neoplasias que surgen a partir de células germinales pluripotenciales y derivan de dos o más capas de células. Se clasifican en tumores maduros, que contienen tejidos bien diferenciados, o inmaduros, que contienen estructuras inmaduras y embrionarias. Su localización más frecuente son las gónadas; la ubicación mesentérica es infrecuente y se han descrito aproximadamente 40 casos en la literatura mundial. Dentro del abordaje diagnóstico y terapéutico, se emplea la tomografía computarizada y la resonancia magnética nuclear para caracterizar la lesión, evaluar la extensión intraabdominal y la relación con otras estructuras. El diagnóstico debe confirmarse mediante el examen histopatológico. Caso clínico. Paciente femenina de 56 años, con antecedente de carcinoma ductal infiltrante de mama izquierda en remisión, en estudios de seguimiento con hallazgo incidental en tomografía de abdomen de lesión abdominopélvica dependiente del mesenterio, contornos lisos y nivel grasa-líquido. Estudios de extensión con marcadores tumorales negativos. Resultados. Por la alta sospecha clínica e imagenológica de teratoma, fue llevada a resección quirúrgica de la lesión. El examen histopatológico confirmó el diagnóstico de teratoma quístico maduro del mesenterio. Conclusión. El teratoma mesentérico es una entidad clínica rara, que debe ser considerado como uno de los diagnósticos diferenciales de una masa abdominal con efecto compresivo. El diagnóstico se basa principalmente en el examen clínico y los hallazgos imagenológicos. La escisión quirúrgica temprana es el pilar del tratamiento; el abordaje laparoscópico o abierto depende de las características clínicas y la experiencia del cirujano.


Background. Teratomas are neoplasms that arise from pluripotent germ cells, derived from two or more layers of germ cells. They are classified as mature tumors (cystic or solid), which contain well-differentiated tissues, or as immature tumors, which contain immature and embryonic structures. Its most frequent location is the female and male gonads; the mesenteric location is rare and approximately 40 cases have been described in the world literature. Within the diagnostic and therapeutic approach, computed tomography and magnetic resonance imaging are used to characterize the lesion, assess intra-abdominal extension and the relationship with other structures. The diagnosis must be confirmed by histopathological examination. Clinical case. A 56-year-old female patient with a history of infiltrating ductal carcinoma of the left breast in remission. In follow-up studies, incidental abdominal tomography finding of an abdominopelvic lesion dependent on the mesentery at the level of the mesogastrium, smooth contours with fat-liquid level. Extension studies with negative tumor markers. Results. Due to high clinical and imaging suspicion of teratoma, the patient was taken to resection of the lesion. Histopathological examination confirmed the diagnosis of mature cystic teratoma of the mesentery. Conclusion. Mesenteric teratoma is a rare clinical entity and is considered one of the differential diagnoses of an abdominal mass with a compressive effect. Diagnosis is mainly based on clinical examination and imaging findings. Early surgical excision is the mainstay of treatment; laparoscopic or open approach depends on the clinical characteristics and the experience of the surgeon.


Asunto(s)
Humanos , Teratoma , Neoplasias Abdominales , Patología , Células Germinales Embrionarias , Mesenterio
9.
Arch. cardiol. Méx ; 93(4): 405-416, Oct.-Dec. 2023. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1527717

RESUMEN

Abstract Introduction: In Mexico, cardiac rehabilitation (CR) as an interdisciplinary intervention with therapeutic impact in patients with heart disease is growing. There is the need to know actual conditions of CR in our country. Objectives: The objective of this National Registry is to follow-up those existing and new CR units in Mexico through the comparison between the two previous registries, RENAPREC-2009 and RENAPREC II-2015 studies. This is a descriptive study focused on diverse CR activities such as assistance training, and certification of health professionals, barriers, reference, population attended, interdisciplinarity, permanence over time, growth prospects, regulations, post-pandemic condition, integrative characteristics, and scientific research. Results: Data were collected from 45 CR centers in the 32 states, 75.5% are private practice units, 67% are new, 33% were part of RENAPREC II-2015, and 17 have continued since 2009. With a better distribution of CR units along the territory, the median reference of candidates for CR programs is 9% with a significant reduction into tiempo of enrollment to Phase II admission (19 ± 11 days). Regarding to previous registries, the coverance of Phases I, II, and III is 71%, 100%, and 93%, respectively; and a coverance increases in evaluation, risk stratification, and prescription, more comprehensive attendance and prevention strategies. Conclusions: CR in Mexico has grown in the past 7 years. Even there is still low reference and heterogeneity in specific processes, there are strengths such as interdisciplinarity, scientific professionalization of specialists, national diversification, and an official society that are consolidated over time.


resumen está disponible en el texto completo

10.
Arch. cardiol. Méx ; 93(4): 464-475, Oct.-Dec. 2023. tab, graf
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1527725

RESUMEN

Resumen Antecedentes: La obesidad es un trastorno multifactorial caracterizado por un aumento en la adiposidad corporal, de amplia prevalencia en nuestro país, a cualquier edad y ligada a grandes consecuencias adversas, incluyendo el desarrollo de cardiopatías. Los programas de rehabilitación cardiaca (RC) son intervenciones interdisciplinarias encaminadas no solo a restaurar la funcionalidad perdida de los pacientes que han sufrido un desenlace cardiovascular, sino también a corregir aquellos factores de riesgo que lo propiciaron y que interfieren en los resultados adaptativos del mismo. La obesidad contribuye a perpetuar el riesgo de cardiopatía y suele ser resistente a las modificaciones del estilo de vida de manera convencional. Objetivo: Establecer pautas en el reconocimiento de la obesidad con directrices de atención al paciente con cardiopatía dentro de los programas de RC y su abordaje interdisciplinario. Método: A través de una extensiva revisión bibliográfica y después de una discusión interdisciplinaria, se elaboró el presente documento para fijar una postura sobre el abordaje de la obesidad en el contexto de los programas de RC en pacientes con cardiopatía. Resultados y conclusiones: Nuestra Sociedad reconoce el abordaje interdisciplinario de los pacientes con obesidad y cardiopatía en su prevención primaria y secundaria, insta a la precisión en su diagnóstico y valoración, y recomienda que su eje primario debe estar basado en primera instancia en las modificaciones del estilo de vida (entrenamiento físico, atención nutricional e intervención psicoemocional), en tanto que la terapia farmacológica y la cirugía bariátrica pudieran ser coadyuvantes en la optimización de los resultados en pacientes selectos.


Abstract Background: Obesity is a multifactorial disorder characterized by increased body adiposity with a wide prevalence in our country, at any age, and linked to major adverse consequences, including the development of heart disease. Cardiac rehabilitation (CR) programs are interdisciplinary interventions aimed not only at restoring the lost functionality of patients who have suffered a cardiovascular outcome, but also at correcting those risk factors that led to it and that interfere with its adaptive results. Obesity contributes to perpetuating heart disease risk and is often resistant to conventional lifestyle modifications. Objective: Establish guidelines in the recognition of obesity with care guidelines for patients with heart disease within CR programs and their interdisciplinary approach. Method: Through an extensive bibliographical review and after an interdisciplinary discussion, this document was prepared to establish a position on the approach to obesity in the context of CR programs in patients with heart disease. Results and conclusions: Our Society recognizes the interdisciplinary approach of our patients with obesity and heart disease in its primary and secondary prevention, urges precision in its diagnosis and assessment, recommends that its primary axis must be based in the first instance on lifestyle modifications (physical training, nutritional care and psycho-emotional intervention), while pharmacological therapy and bariatric surgery could be coadjuvants in optimizing the results in selected patients.

11.
Prog Retin Eye Res ; 97: 101217, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37778617

RESUMEN

Retinal ganglion cells, the neurons that die in glaucoma, are endowed with a high metabolism requiring optimal provision of oxygen and nutrients to sustain their activity. The timely regulation of blood flow is, therefore, essential to supply firing neurons in active areas with the oxygen and glucose they need for energy. Many glaucoma patients suffer from vascular deficits including reduced blood flow, impaired autoregulation, neurovascular coupling dysfunction, and blood-retina/brain-barrier breakdown. These processes are tightly regulated by a community of cells known as the neurovascular unit comprising neurons, endothelial cells, pericytes, Müller cells, astrocytes, and microglia. In this review, the neurovascular unit takes center stage as we examine the ability of its members to regulate neurovascular interactions and how their function might be altered during glaucomatous stress. Pericytes receive special attention based on recent data demonstrating their key role in the regulation of neurovascular coupling in physiological and pathological conditions. Of particular interest is the discovery and characterization of tunneling nanotubes, thin actin-based conduits that connect distal pericytes, which play essential roles in the complex spatial and temporal distribution of blood within the retinal capillary network. We discuss cellular and molecular mechanisms of neurovascular interactions and their pathophysiological implications, while highlighting opportunities to develop strategies for vascular protection and regeneration to improve functional outcomes in glaucoma.


Asunto(s)
Células Endoteliales , Nanotubos , Humanos , Células Endoteliales/metabolismo , Encéfalo/irrigación sanguínea , Encéfalo/metabolismo , Oxígeno/metabolismo
12.
Microbiol Resour Announc ; 12(11): e0079423, 2023 Nov 16.
Artículo en Inglés | MEDLINE | ID: mdl-37855632

RESUMEN

Here, we report the draft genome sequences of six marine strains isolated from plastic samples incubated in the Mediterranean Sea. Genomic analyses place these strains within the Alkalihalobacillus, Bacillus, Halomonas, and Marinobacter genera. Examining the genomes of these non-typical environmental bacteria increases our comprehension of microorganism biology and their potential uses.

13.
Comput Biol Chem ; 107: 107966, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37778093

RESUMEN

Databases of genes and enzymes involved in hydrocarbon degradation have been previously reported. However, these databases specialize on only a specific group of hydrocarbons and/or are constructed partly based on enzyme sequences with putative functions indicated by in silico research, with no experimental evidence. Here, we present a curated database of Hydrocarbon Aerobic Degradation Enzymes and Genes (HADEG) containing proteins and genes involved in alkane, alkene, aromatic, and plastic aerobic degradation and biosurfactant production based solely on experimental evidence, which are present in bacteria, and fungi. HADEG includes 259 proteins for petroleum hydrocarbon degradation, 160 for plastic degradation, and 32 for biosurfactant production. This database will help identify and predict hydrocarbon degradation genes/pathways and biosurfactant production in genomes.


Asunto(s)
Hidrocarburos , Petróleo , Biodegradación Ambiental , Alcanos/metabolismo , Bacterias/genética , Bacterias/metabolismo , Petróleo/metabolismo , Petróleo/microbiología
14.
Front Microbiol ; 14: 1216008, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37692398

RESUMEN

Purpose: The purpose of this study was to highlight the clinical and molecular features of 13 Raoultella ornithinolytica strains isolated from clinical environments in Ecuador, and to perform comparative genomics with previously published genomes of Raoultella spp. As Raoultella is primarily found in environmental, clinical settings, we focused our work on identifying mechanisms of resistance that can provide this bacterium an advantage to establish and persist in hospital environments. Methods: We analyzed 13 strains of Raoultella ornithinolytica isolated from patients with healthcare associated infections (HAI) in three hospitals in Quito and one in Santo Domingo de Los Tsáchilas, Ecuador, between November 2017 and April 2018. These isolates were subjected to phenotypic antimicrobial susceptibility testing, end-point polymerase chain reaction (PCR) to detect the presence of carbapenemases and whole-genome sequencing. Results: Polymerase chain reaction revealed that seven isolates were positive isolates for blaOXA-48 and one for blaKPC-2 gene. Of the seven strains that presented the blaOXA-48 gene, six harbored it on an IncFII plasmid, one was inserted into the bacterial chromosome. The blaKPC gene was detected in an IncM2/IncR plasmid. From the bioinformatics analysis, nine genomes had the gene blaOXA-48, originating from Ecuador. Moreover, all R. ornithinolytica strains contained the ORN-1 gene, which confers resistance for ß-lactams, such as penicillins and cephalosporins. Comparative genome analysis of the strains showed that the pangenome of R. ornithinolytica is considered an open pangenome, with 27.77% of core genes, which could be explained by the fact that the antibiotic resistance genes in the ancestral reconstruction are relatively new, suggesting that this genome is constantly incorporating new genes. Conclusion: These results reveal the genome plasticity of R. ornithinolytica, particularly in acquiring antibiotic-resistance genes. The genomic surveillance and infectious control of these uncommon species are important since they may contribute to the burden of antimicrobial resistance and human health.

15.
Sensors (Basel) ; 23(16)2023 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-37631729

RESUMEN

This paper proposes a novel automotive radar waveform involving the theory behind M-ary frequency shift key (MFSK) radar systems. Along with the MFSK theory, coding schemes are studied to provide a solution to mutual interference. The proposed MFSK waveform consists of frequency increments throughout the range of 76 GHz to 81 GHz with a step value of 1 GHz. Instead of stepping with a fixed frequency, a triangular chirp sequence allows for static and moving objects to be detected. Therefore, automotive radars will improve Doppler estimation and simultaneous range of various targets. In this paper, a binary coding scheme and a combined transform coding scheme used for radar waveform correlation are evaluated in order to provide unique signals. AVs have to perform in an environment with a high number of signals being sent through the automotive radar frequency band. Efficient coding methods are required to increase the number of signals that are generated. An evaluation method and experimental data of modulated frequencies as well as a comparison with other frequency method systems are presented.

16.
ChemSusChem ; 16(23): e202300936, 2023 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-37584441

RESUMEN

The present study highlights a novel and advantageous protocol for accessing carbamates through the well-established three-component coupling reaction involving CO2 , amines, and alkyl halides. By employing an immobilized organic base, operating under mild reaction conditions, an array of alkyl carbamates in yields of up to 95 % could be isolated. This approach offers a broad and versatile product scope, allowing for the facile modification of both the amine and alkyl halide reactants. Notably, the pioneering use of an immobilized organic base, specifically the polymer-supported 1,8-diazabicyclo[5.4.0]undec-7-ene (PS-DBU), in this three-component reaction eliminates the need for classical purification steps, streamlining the process. To ensure practicality and sustainability, extensive studies were conducted to verify the recovery and reusability of the polymer-supported DBU catalyst, which consistently maintained the high chemical yield of the carbamates across multiple cycles. Overall, this innovative protocol represents a significant advancement in carbamate synthesis, combining efficiency, generality, and the potential for DBU recycling.

17.
PLoS One ; 18(7): e0288504, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37440509

RESUMEN

Antimicrobial resistance (AMR) represents a serious threat to global health. The development of new drugs to combat infections caused by bacteria resistant to multiple or even all available antibiotics is urgent. Most antibiotics used up to date have been identified from soil microorganisms. The marine environment represents an alternative source with great potential for the identification of microorganisms that produce bioactive molecules, including antibiotics. In this study, we analyzed the antibacterial activity of a collection of 82 bacterial strains isolated from marine water and sediment samples collected from the Southwestern Gulf of Mexico. Eight of the marine isolates inhibited the growth of different pathogenic bacteria, seven of which were identified as presumptive Pseudomonas aeruginosa. Interestingly, genome sequencing and phylogenetic analysis revealed that the remaining marine isolate showing antibacterial activity is a novel Pseudomonas species that we denominated Pseudomonas sp. GOM7, which was not pathogenic in the Galleria mellonella infection model in the conditions tested. Notably, Pseudomonas sp. GOM7 inhibited the growth of multidrug and methicillin-resistant strains of the priority pathogen Staphylococcus aureus. Our results show that the anti-S. aureus compound(s) produced by Pseudomonas sp. GOM7 can be extracted from the culture supernatant of this bacterium with the organic solvent ethyl acetate. Annotation of the Pseudomonas sp. GOM7 genome revealed the presence of several biosynthetic gene clusters predicted to code for possible antimicrobial compounds. Our results further highlight the potential of bacteria from the Gulf of Mexico as a source of novel antimicrobials.


Asunto(s)
Staphylococcus aureus Resistente a Meticilina , Staphylococcus aureus , Staphylococcus aureus/genética , Pseudomonas/genética , Staphylococcus aureus Resistente a Meticilina/genética , Filogenia , Antibacterianos/farmacología , Pseudomonas aeruginosa/genética , Bacterias , Genómica , Pruebas de Sensibilidad Microbiana
18.
Int J Qual Health Care ; 35(3)2023 Jul 07.
Artículo en Inglés | MEDLINE | ID: mdl-37421311

RESUMEN

The International Council of Cardiovascular Prevention and Rehabilitation developed an International Cardiac Rehabilitation (CR) Registry (ICRR) to support CR programs in low-resource settings to optimize care provision and patient outcomes. This study assessed implementation of the ICRR, site data steward experience with on-boarding and data entry, and patient acceptability. Multimethod observational pilot involves (I) analysis of ICRR data from three centers (Iran, Pakistan, and Qatar) from inception to May 2022, (II) focus group with on-boarded site data stewards (also from Mexico and India), and (III) semistructured interviews with participating patients. Five hundred sixty-seven patients were entered. Based on volumes at each program, 85.6% of patients were entered in ICRR. 99.3% patients approached consented to participate. The average time to enter data at pre- and follow-up assessments by source was 6.8-12.6 min. Of 22 variables preprogram, completion was 89.5%. Among patients with any follow-up data, of four program-reported variables, completion was 99.0% in program completers and 51.5% in none; of 10 patient-reported variables, completion was 97.0% in program completers and 84.8% in none. The proportion of patients with any follow-up data was 84.8% in program completers, with 43.6% of noncompleters having any data entered other than completion status. Twelve data stewards participated in the focus group. Main themes were valuable on-boarding process, data entry, process of engaging patients, and benefits of participation. Thirteen patients were interviewed. Themes were good understanding of the registry, positive experience providing data, and value of lay summary and eagerness for annual assessment. Feasibility and data quality of ICRR were demonstrated.


Asunto(s)
Rehabilitación Cardiaca , Enfermedades Cardiovasculares , Humanos , Rehabilitación Cardiaca/métodos , Enfermedades Cardiovasculares/prevención & control , Sistema de Registros , India , Irán
19.
Microbiol Resour Announc ; 12(9): e0034823, 2023 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-37470493

RESUMEN

We report here the draft genome sequence of a marine Pseudomonas sp. novel species with lipase activity isolated from a deep-sea water sample of the Gulf of Mexico. The genome consists of 4.3 Mbp in 48 contigs.

20.
Arch Cardiol Mex ; 93(4): 464-475, 2023 06 27.
Artículo en Español | MEDLINE | ID: mdl-37369192

RESUMEN

Background: Obesity is a multifactorial disorder characterized by increased body adiposity with a wide prevalence in our country, at any age, and linked to major adverse consequences, including the development of heart disease. Cardiac rehabilitation (CR) programs are interdisciplinary interventions aimed not only at restoring the lost functionality of patients who have suffered a cardiovascular outcome, but also at correcting those risk factors that led to it and that interfere with its adaptive results. Obesity contributes to perpetuating heart disease risk and is often resistant to conventional lifestyle modifications. Objective: Establish guidelines in the recognition of obesity with care guidelines for patients with heart disease within CR programs and their interdisciplinary approach. Method: Through an extensive bibliographical review and after an interdisciplinary discussion, this document was prepared to establish a position on the approach to obesity in the context of CR programs in patients with heart disease. Results and conclusions: Our Society recognizes the interdisciplinary approach of our patients with obesity and heart disease in its primary and secondary prevention, urges precision in its diagnosis and assessment, recommends that its primary axis must be based in the first instance on lifestyle modifications (physical training, nutritional care and psycho-emotional intervention), while pharmacological therapy and bariatric surgery could be coadjuvants in optimizing the results in selected patients.


Antecedentes: La obesidad es un trastorno multifactorial caracterizado por un aumento en la adiposidad corporal, de amplia prevalencia en nuestro país, a cualquier edad y ligada a grandes consecuencias adversas, incluyendo el desarrollo de cardiopatías. Los programas de rehabilitación cardiaca (RC) son intervenciones interdisciplinarias encaminadas no solo a restaurar la funcionalidad perdida de los pacientes que han sufrido un desenlace cardiovascular, sino también a corregir aquellos factores de riesgo que lo propiciaron y que interfieren en los resultados adaptativos del mismo. La obesidad contribuye a perpetuar el riesgo de cardiopatía y suele ser resistente a las modificaciones del estilo de vida de manera convencional. Objetivo: Establecer pautas en el reconocimiento de la obesidad con directrices de atención al paciente con cardiopatía dentro de los programas de RC y su abordaje interdisciplinario. Método: A través de una extensiva revisión bibliográfica y después de una discusión interdisciplinaria, se elaboró el presente documento para fijar una postura sobre el abordaje de la obesidad en el contexto de los programas de RC en pacientes con cardiopatía. Resultados y conclusiones: Nuestra Sociedad reconoce el abordaje interdisciplinario de los pacientes con obesidad y cardiopatía en su prevención primaria y secundaria, insta a la precisión en su diagnóstico y valoración, y recomienda que su eje primario debe estar basado en primera instancia en las modificaciones del estilo de vida (entrenamiento físico, atención nutricional e intervención psicoemocional), en tanto que la terapia farmacológica y la cirugía bariátrica pudieran ser coadyuvantes en la optimización de los resultados en pacientes selectos.


Asunto(s)
Rehabilitación Cardiaca , Cardiopatías , Humanos , Sobrepeso , Obesidad/complicaciones , Obesidad/terapia , Obesidad/epidemiología , Factores de Riesgo
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