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1.
Aust Crit Care ; 2024 Sep 21.
Artículo en Inglés | MEDLINE | ID: mdl-39307653

RESUMEN

BACKGROUND: Effective clinical education is essential for managing tracheostomy patients safely and efficiently. Simulation-based training has shown greater efficacy than traditional methods in various clinical settings. Our internal training programme, called the Tracheostomy Refresher Program (TRP) was used to enhance nurses' skills in tracheostomy care. AIM/OBJECTIVE: The aim of this study was to evaluate the impact of the TRP on nurses' self-reported knowledge and confidence and psychomotor skills comparing hands-on simulation-based training alone (TRP-S) with both the simulation-based training and the e-learning component (TRP-S + e). METHODS: The study was conducted at a large tertiary hospital in Singapore from February 2022 to October 2022, focussing on the TRP. Participants were divided into two cohorts: those receiving TRP-S and those receiving additional complementary TRP-S + e. All participants completed theory tests and affective questionnaires before and after the training to assess knowledge and attitudes. At the same time, their psychomotor skills were evaluated during the simulation using a standardised checklist. The two cohorts were then compared based on the results of these pretests and post-tests and the psychomotor skills assessment to evaluate the effectiveness of the additional e-learning component. RESULTS: Participants reported significantly enhanced confidence, knowledge, and psychomotor skills in tracheostomy care post training (p < 0.001 for all). The TRP-S + e cohort showed significantly higher knowledge and confidence scores than the TRP-S cohort (p < 0.001 for both). CONCLUSION: Our study suggests that a TRP incorporating hands-on simulation-based training with or without e-learning significantly improved self-reported knowledge, confidence, and psychomotor skills in tracheostomy care. Future research should explore the optimal duration, engagement strategies, and cost-effectiveness of such educational techniques and whether similar approaches can be applied for other clinical skills.

2.
J Environ Manage ; 370: 122551, 2024 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-39299128

RESUMEN

The textile printing industry discharges large volumes of effluent containing high concentrations of urea and nitrogenous compounds. Anoxic-oxic (AO) treatment is a promising method for treating printing wastewater. However, the effect of sodium sulfate (Na2SO4) salinity on the urea hydrolysis and nitrogen removal simultaneously in the AO process has received little attention. In this study, five batch reactors were used to treat synthetic printing wastewater with high urea and nitrogen concentrations. A strategy was applied to increase the Na2SO4 concentration from 0 to 19 g/L in the anoxic stage of each reactor. The effect of Na2SO4 on urea hydrolysis, total nitrogen removal and COD removal, sludge characteristics, and bacterial community structure were investigated. The findings showed that urea hydrolysis increased with increasing Na2SO4 concentration. The main mechanism of urea removal was intracellular hydrolysis, with a urea removal efficiency (URE%) of approximately 98% in all batch reactors. In addition, under the stress of Na2SO4, the total nitrogen and COD removal performances were partially inhibited. The most significant removal performances after AO treatment were observed at 0 g/L Na2SO4, with nitrogen and COD removal efficiencies of 88% and 95%, respectively. When Na2SO4 concentration reached 19 g/L, the sludge settling performance and compactness were enhanced. The extracellular polymeric substance (EPS) components in the sludge were dependent on their ability of removing organics. Bacterial community diversity analysis revealed that the enrichment of the Proteobacteria, Firmicutes, and Gemmatimonadota phyla in the anoxic stages of batch reactors was related to intracellular urea hydrolysis. Bacteriodota and Chloroflexi were responsible for total nitrogen removal in all anoxic and oxic stages. This research will develop the understanding of Na2SO4 salinity impact on simultaneous urea hydrolysis and nitrogen removal during AO treatment process.

3.
Cell Biol Toxicol ; 40(1): 76, 2024 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-39276283

RESUMEN

tRNAs are codon decoders that convert the transcriptome into the proteome. The field of tRNA research is excited by the increasing discovery of specific tRNA modifications that are installed at specific, evolutionarily conserved positions by a set of specialized tRNA-modifying enzymes and the biogenesis of tRNA-derived regulatory fragments (tsRNAs) which exhibit copious activities through multiple mechanisms. Dysregulation of tRNA modification usually has pathological consequences, a phenomenon referred to as "tRNA modopathy". Current evidence suggests that certain tRNA-modifying enzymes and tsRNAs may serve as promising diagnostic biomarkers and therapeutic targets, particularly for chemoresistant cancers. In this review, we discuss the latest discoveries that elucidate the molecular mechanisms underlying the functions of clinically relevant tRNA modifications and tsRNAs, with a focus on malignancies. We also discuss the therapeutic potential of tRNA/tsRNA-based therapies, aiming to provide insights for the development of innovative therapeutic strategies. Further efforts to unravel the complexities inherent in tRNA biology hold the promise of yielding better biomarkers for the diagnosis and prognosis of diseases, thereby advancing the development of precision medicine for health improvement.


Asunto(s)
Neoplasias , ARN de Transferencia , Humanos , ARN de Transferencia/metabolismo , ARN de Transferencia/genética , Neoplasias/genética , Neoplasias/metabolismo , Procesamiento Postranscripcional del ARN/genética , ARN Pequeño no Traducido/genética , ARN Pequeño no Traducido/metabolismo , Animales
4.
World J Microbiol Biotechnol ; 40(10): 300, 2024 Aug 13.
Artículo en Inglés | MEDLINE | ID: mdl-39134917

RESUMEN

Livestock production significantly contributes to greenhouse gas (GHG) emissions particularly methane (CH4) emissions thereby influencing climate change. To address this issue further, it is crucial to establish strategies that simultaneously increase ruminant productivity while minimizing GHG emissions, particularly from cattle, sheep, and goats. Recent advancements have revealed the potential for modulating the rumen microbial ecosystem through genetic selection to reduce methane (CH4) production, and by microbial genome editing including CRISPR/Cas9, TALENs (Transcription Activator-Like Effector Nucleases), ZFNs (Zinc Finger Nucleases), RNA interference (RNAi), Pime editing, Base editing and double-stranded break-free (DSB-free). These technologies enable precise genetic modifications, offering opportunities to enhance traits that reduce environmental impact and optimize metabolic pathways. Additionally, various nutrition-related measures have shown promise in mitigating methane emissions to varying extents. This review aims to present a future-oriented viewpoint on reducing methane emissions from ruminants by leveraging CRISPR/Cas9 technology to engineer the microbial consortia within the rumen. The ultimate objective is to develop sustainable livestock production methods that effectively decrease methane emissions, while maintaining animal health and productivity.


Asunto(s)
Sistemas CRISPR-Cas , Edición Génica , Gases de Efecto Invernadero , Ganado , Metano , Rumen , Metano/metabolismo , Animales , Rumen/microbiología , Rumen/metabolismo , Edición Génica/métodos , Gases de Efecto Invernadero/metabolismo , Bovinos , Cabras , Consorcios Microbianos , Ovinos , Bacterias/metabolismo , Bacterias/genética , Bacterias/clasificación , Microbioma Gastrointestinal , Rumiantes/microbiología
5.
Cureus ; 16(6): e62926, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39040724

RESUMEN

BACKGROUND: Patients on hemodialysis (HD) are prone to various cardiovascular complications. Two-dimensional speckle tracking echocardiography (2D STE) is an innovative technique for early myocardial dysfunction detection, even with normal ejection fraction (EF). OBJECTIVE: We aim to detect left ventricle (LV) dysfunction in regular hemodialysis patients using 2D STE compared to traditional echocardiography. METHODS: The study comprised 30 patients with end-stage renal disease (ESRD), subdivided according to left ventricular mass index (LVMI) into group 1 with left ventricular hypertrophy (LVH) (n=19) and group 2 without LVH (n=11). Another 30 healthy control subjects were recruited as group 3. The EF, average systolic velocity (Sa), and 2D LV strain were taken as measures of LV systolic function. The indicators for diastolic function included the E/A ratio and E velocity/peak early diastolic velocity. RESULTS: Regarding the parameters of LV systolic and diastolic functions assessed by traditional echocardiography, we found no significant difference between groups 1 and 2. However, using 2D STE, we observed significant differences in the average Sa velocity (p=0.025), average LV strain (p=0.03), 2D global longitudinal strain (GLS) (p=0.03), E/Ea (p=0.003), and LV myocardial performance index (MPI) (p=0.006). Also, a significant positive correlation was found between LVMI and left ventricular end-diastolic diameter (LVEDD) (p<0.01, r=0.63), EF measured by 2D (p=0.034, r=0.39), mitral E/A ratio (p=0.03, r=0.49), and mitral E/Ea (p<0.01, r=0.72). There was a significantly strong negative correlation between LVMI and 2D average LV strain (p=0.034, r=-0.39). CONCLUSION: We concluded that 2D STE is more sensitive than a conventional echo in detecting early LV systolic and diastolic dysfunction even in patients with normal EF.

6.
ACS Omega ; 9(14): 16832-16841, 2024 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-38617622

RESUMEN

In the current research study, zinc oxide nanoparticles (ZnO-NPs) were synthesized via a green synthesis technique using the seed extract of Citrullus lanatus. The study further intended to evaluate the potential synergistic effects of ZnO-NPs with antibiotics against multidrug resistant (MDR) bacteria. It was observed that C. lanatus seed extracts obtained by n-hexane and methanolic solvents revealed the presence of constituents, such as tannins, flavonoids, and terpenoids. Furthermore, the extract of n-hexane displayed the strongest antibacterial activity against Yersinia species (17 ± 1.2 mm) and Escherichia coli (17 ± 2.6 mm), while the methanolic extract showed the maximum antibacterial activity against E. coli (17 ± 0.8 mm). Additionally, the ZnO-NP synthesis was confirmed by ultraviolet-visible analysis with a characteristic absorption peak at 280 nm. The Fourier transform infrared spectroscopy analysis suggested the absorption peaks in the 500-3800 cm-1 range, which corresponds to various groups of tertiary alcohol, aldehyde, amine, ester, aromatic compounds, thiol, amine salt, and primary amine. The scanning electron microscopy spectra of ZnO-NPs demonstrated the presence of zero-dimensional spherical particles with well-dispersed character. Moreover, encapsulation with ZnO-NPs improved the antimicrobial activity of antibiotics against the panel of MDR bacteria, and the increases in the effectiveness of particular antibiotics against MDR bacteria were significant (P = 0.0005). In essence, the synthesized ZnO-NPs have the potential as drug carriers with powerful bactericidal properties that work against MDR bacterial strains. These outcomes are an indication of such significance in pharmaceutical science, giving possibilities for further research and development in this field.

7.
J Intensive Care ; 12(1): 13, 2024 Mar 26.
Artículo en Inglés | MEDLINE | ID: mdl-38528556

RESUMEN

BACKGROUND: Clinical practice guidelines on limitation of life-sustaining treatments (LST) in the intensive care unit (ICU), in the form of withholding or withdrawal of LST, state that there is no ethical difference between the two. Such statements are not uniformly accepted worldwide, and there are few studies on LST limitation in Asia. This study aimed to evaluate the predictors and outcomes of withholding and withdrawal of LST in Singapore, focusing on the similarities and differences between the two approaches. METHODS: This was a multicentre observational study of patients admitted to 21 adult ICUs across 9 public hospitals in Singapore over an average of three months per year from 2014 to 2019. The primary outcome measures were withholding and withdrawal of LST (cardiopulmonary resuscitation, invasive mechanical ventilation, and vasopressors/inotropes). The secondary outcome measure was hospital mortality. Multivariable generalised mixed model analysis was used to identify independent predictors for withdrawal and withholding of LST and if LST limitation predicts hospital mortality. RESULTS: There were 8907 patients and 9723 admissions. Of the former, 80.8% had no limitation of LST, 13.0% had LST withheld, and 6.2% had LST withdrawn. Common independent predictors for withholding and withdrawal were increasing age, absence of chronic kidney dialysis, greater dependence in activities of daily living, cardiopulmonary resuscitation before ICU admission, higher Acute Physiology and Chronic Health Evaluation (APACHE) II score, and higher level of care in the first 24 h of ICU admission. Additional predictors for withholding included being of Chinese race, the religions of Hinduism and Islam, malignancy, and chronic liver failure. The additional predictor for withdrawal was lower hospital paying class (with greater government subsidy for hospital bills). Hospital mortality in patients without LST limitation, with LST withholding, and with LST withdrawal was 10.6%, 82.1%, and 91.8%, respectively (p < 0.001). Withholding (odds ratio 13.822, 95% confidence interval 9.987-19.132) and withdrawal (odds ratio 38.319, 95% confidence interval 24.351-60.298) were both found to be independent predictors of hospital mortality on multivariable analysis. CONCLUSIONS: Differences in the independent predictors of withholding and withdrawal of LST exist. Even after accounting for baseline characteristics, both withholding and withdrawal of LST independently predict hospital mortality. Later mortality in patients who had LST withdrawn compared to withholding suggests that the decision to withdraw may be at the point when medical futility is recognised.

8.
Arch Toxicol ; 98(6): 1685-1703, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38460001

RESUMEN

That certain preconceptual paternal exposures reprogram the developmental phenotypic plasticity in future generation(s) has conceptualized the "paternal programming of offspring health" hypothesis. This transgenerational effect is transmitted primarily through sperm epigenetic mechanisms-DNA methylation, non-coding RNAs (ncRNAs) and associated RNA modifications, and histone modifications-and potentially through non-sperm-specific mechanisms-seminal plasma and circulating factors-that create 'imprinted' memory of ancestral information. The epigenetic landscape in sperm is highly responsive to environmental cues, due to, in part, the soma-to-germline communication mediated by epididymosomes. While human epidemiological studies and experimental animal studies have provided solid evidences in support of transgenerational epigenetic inheritance, how ancestral information is memorized as epigenetic codes for germline transmission is poorly understood. Particular elusive is what the downstream effector pathways that decode those epigenetic codes into persistent phenotypes. In this review, we discuss the paternal reprogramming of offspring phenotype and the possible underlying epigenetic mechanisms. Cracking these epigenetic mechanisms will lead to a better appreciation of "Paternal Origins of Health and Disease" and guide innovation of intervention algorithms to achieve 'healthier' outcomes in future generations. All this will revolutionize our understanding of human disease etiology.


Asunto(s)
Epigénesis Genética , Fenotipo , Humanos , Animales , Masculino , Metilación de ADN , Espermatozoides , Exposición Paterna/efectos adversos , Herencia Paterna , Femenino , ARN no Traducido/genética
9.
Int J Biol Macromol ; 260(Pt 2): 129607, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38253153

RESUMEN

Serine is a metabolite with ever-expanding metabolic and non-metabolic signaling attributes. By providing one­carbon units for macromolecule biosynthesis and functional modifications, serine and serine metabolism largely impinge on cellular survival and function. Cancer cells frequently have a preference for serine metabolic reprogramming to create a conducive metabolic state for survival and aggressiveness, making intervention of cancer-associated rewiring of serine metabolism a promising therapeutic strategy for cancer treatment. Beyond providing methyl donors for methylation in modulation of innate immunity, serine metabolism generates formyl donors for mitochondrial tRNA formylation which is required for mitochondrial function. Interestingly, fully developed neurons lack the machinery for serine biosynthesis and rely heavily on astrocytic l-serine for production of d-serine to shape synaptic plasticity. Here, we recapitulate recent discoveries that address the medical significance of serine and serine metabolism in malignancies, mitochondrial-associated disorders, and neurodegenerative pathologies. Metabolic control and epigenetic- and posttranslational regulation of serine metabolism are also discussed. Given the metabolic similarities between cancer cells, neurons and germ cells, we further propose the relevance of serine metabolism in testicular homeostasis. Our work provides valuable hints for future investigations that will lead to a deeper understanding of serine and serine metabolism in cellular physiology and pathology.


Asunto(s)
Neoplasias , Serina , Humanos , Serina/metabolismo , Transducción de Señal , Neoplasias/metabolismo , Metabolismo Energético , Mitocondrias/metabolismo
10.
Chem Biol Interact ; 387: 110773, 2024 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-37977248

RESUMEN

Retinoic acid (RA), the derivative of vitamin A/retinol, is a signaling molecule with important implications in health and disease. It is a well-known developmental morphogen that functions mainly through the transcriptional activity of nuclear RA receptors (RARs) and, uncommonly, through other nuclear receptors, including peroxisome proliferator-activated receptors. Intracellular RA is under spatiotemporally fine-tuned regulation by synthesis and degradation processes catalyzed by retinaldehyde dehydrogenases and P450 family enzymes, respectively. In addition to dictating the transcription architecture, RA also impinges on cell functioning through non-genomic mechanisms independent of RAR transcriptional activity. Although RA-based differentiation therapy has achieved impressive success in the treatment of hematologic malignancies, RA also has pro-tumor activity. Here, we highlight the relevance of RA signaling in cell-fate determination, neurogenesis, visual function, inflammatory responses and gametogenesis commitment. Genetic and post-translational modifications of RAR are also discussed. A better understanding of RA signaling will foster the development of precision medicine to improve the defects caused by deregulated RA signaling.


Asunto(s)
Receptores de Ácido Retinoico , Tretinoina , Tretinoina/farmacología , Tretinoina/metabolismo , Receptores de Ácido Retinoico/genética , Receptores de Ácido Retinoico/metabolismo , Diferenciación Celular , Transducción de Señal/fisiología , Receptores Citoplasmáticos y Nucleares
12.
BMC Microbiol ; 23(1): 344, 2023 11 16.
Artículo en Inglés | MEDLINE | ID: mdl-37974103

RESUMEN

Food security and environmental pollution are major concerns for the expanding world population, where farm animals are the largest source of dietary proteins and are responsible for producing anthropogenic gases, including methane, especially by cows. We sampled the fecal microbiomes of cows from varying environmental regions of Pakistan to determine the better-performing microbiomes for higher yields and lower methane emissions by applying the shotgun metagenomic approach. We selected managed dairy farms in the Chakwal, Salt Range, and Patoki regions of Pakistan, and also incorporated animals from local farmers. Milk yield and milk fat, and protein contents were measured and correlated with microbiome diversity and function. The average milk protein content from the Salt Range farms was 2.68%, with an average peak milk yield of 45 litters/head/day, compared to 3.68% in Patoki farms with an average peak milk yield of 18 litters/head/day. Salt-range dairy cows prefer S-adenosyl-L-methionine (SAMe) to S-adenosyl-L-homocysteine (SAH) conversion reactions and are responsible for low milk protein content. It is linked to Bacteroides fragilles which account for 10% of the total Bacteroides, compared to 3% in the Patoki region. The solid Non-Fat in the salt range was 8.29%, whereas that in patoki was 6.34%. Moreover, Lactobacillus plantarum high abundance in Salt Range provided propionate as alternate sink to [H], and overcoming a Methanobrevibacter ruminantium high methane emissions in the Salt Range. Furthermore, our results identified ruminant fecal microbiomes that can be used as fecal microbiota transplants (FMT) to high-methane emitters and low-performing herds to increase farm output and reduce the environmental damage caused by anthropogenic gases emitted by dairy cows.


Asunto(s)
Microbioma Gastrointestinal , Lactancia , Femenino , Bovinos , Animales , Dieta/veterinaria , Proteínas de la Leche , Gases , Metano/metabolismo
13.
J Genet Eng Biotechnol ; 21(1): 96, 2023 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-37812313

RESUMEN

BACKGROUND: Indonesian local rabbit (Oryctolagus cuniculus) is a local breed in Indonesia. We reveal the mitochondrial genome sequence of the Indonesian local Rabbit for the first time. A better understanding of the mechanisms underlying these beneficial aspects of local breeds over imported ones requires detailed genetic investigations, of which mtDNA genome sequencing is of particular importance. Such an investigation will solve the major issues of misidentification with Javanese hares (Lepus nigricollis) and maternal lineage. In addition, this information will guide better statistics on the Indonesian local rabbit breed population and strategies for its conservation and breeding plans. This study aimed to identify and explore the characteristics of the mtDNA genomes of Indonesian local rabbits. RESULT: This study observed that the length of the mtDNA genome is 17,469 bp, consisting of two ribosomal RNA (12S rRNA, 16S rRNA), 22 transfer RNA genes (trnR, trnG, trnK, trnD, trnS, trnY, trnC, trnN, trnA, trnW, trnM, trnQ, trnl, trnL, trnV, trnF, trnP, trnT, trnE, trnL, trnS, trnH), 13 protein-coding genes (PCGs) (ND4l, ND3, COX3, ATP6, ATP8, COX2, COX1, ND2, ND1, CYTB, ND6, ND5, ND4), a replication origin, and a noncoding control region (D-loop). CONCLUSIONS: mtDNA genome of Indonesian local rabbit was the longest and had the most extended D-loop sequence among the other references of Oryctolagus cuniculus. Other specific differences were also found in the percentage of nucleotides and variation in most of the PCGs when they were aligned with Oryctolagus cuniculus references from GenBank. Indonesian local Rabbits strongly suspected brought from Europe during the colonial period in Indonesia.

14.
J Pak Med Assoc ; 73(10): 2013-2016, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37876062

RESUMEN

OBJECTIVE: To determine the molecular characterisation of beta-thalassemia major patients, pattern of major endocrine complications and its association with haemoglobin subunit beta gene variants. Method: The cross-sectional study was conducted from November 2021 to November 2022 after approval from the ethics review committee of Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan, and comprised of 88 patients with beta thalassemia major aged >8 years and having serum ferritin level >1000 µg/L. The subjects were analysed for haemoglobin subunit beta gene variants and major endocrine complications, like growth retardation, hypogonadism, hypothyroidism, hypoparathyroidism and diabetic abnormalities using an automatic chemistry analyser, fully automatic chemiluminescence immunoassay analyser, enzyme-linked immunosorbent assay and real-time polymerase chain reaction. Data was analysed using SPSS 25. RESULTS: Of the 88 subjects, 40(45.4%) were girls and 48(54.5%) were boys. The overall mean age was 12±2.81 years. Of the total, 55(62.5%) had growth retardation, 41(46.6%) were cases of hypogonadism, 16(18.1%) hypothyroidism, 5(5.7%) hypoparathyroidism, 3(3.4%) diabetes mellitus and 8 (9.1%) had impaired glucose tolerance. Also, 65 (73.9%) patients confronted at least one endocrine complication. Endocrine complications were strongly associated with serum ferritin levels (p=0.000). The most common haemoglobin subunit beta gene variant identified was IVSI-5 (G>C) in 36 (40.9%), and the least identified variant was cluster of differenctiation-CD26(G>A) 1(1.1%). The association between haemoglobin subunit beta gene variants with endocrine complications was statistically non-significant (p>0.05). CONCLUSIONS: IVSI-5 (G>C) was found to be the most frequent haemoglobin subunit beta gene variant among beta- thalassemia major patients.


Asunto(s)
Diabetes Mellitus , Hipogonadismo , Hipoparatiroidismo , Hipotiroidismo , Talasemia beta , Masculino , Femenino , Humanos , Niño , Adolescente , Talasemia beta/complicaciones , Talasemia beta/epidemiología , Talasemia beta/genética , Estudios Transversales , Pakistán/epidemiología , Diabetes Mellitus/epidemiología , Diabetes Mellitus/genética , Hipotiroidismo/epidemiología , Hipotiroidismo/genética , Hipotiroidismo/complicaciones , Hipogonadismo/etiología , Hipogonadismo/genética , Ferritinas , Trastornos del Crecimiento/complicaciones , Subunidades de Hemoglobina
15.
J Cell Biochem ; 124(8): 1067-1081, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37566665

RESUMEN

Cellular metabolites are ancient molecules with pleiotropic implications in health and disease. Beyond their cognate roles, they have signaling functions as the ligands for specific receptors and the precursors for epigenetic or posttranslational modifications. Lactate has long been recognized as a metabolic waste and fatigue product mainly produced from glycolytic metabolism. Recent evidence however suggests lactate is an unique molecule with diverse signaling attributes in orchestration of numerous biological processes, including tumor immunity and neuronal survival. The copious metabolic and non-metabolic functions of lactate mediated by its bidirectional shuttle between cells or intracellular organelles lead to a phenotype called "lactormone." Importantly, the mechanisms of lactate signaling, via acting as a molecular sensor and a regulator of NAD+ metabolism and AMP-activated protein kinase signaling, and via the newly identified lactate-driven lactylation, have been discovered. Further, we include a brief discussion about the autocrine regulation of efferocytosis by lactate in Sertoli cells which favoraerobic glycolysis. By emphasizing a repertoire of the most recent discovered mechanisms of lactate signaling, this review will open tantalizing avenues for future investigations cracking the regulatory topology of lactate signaling covered in the veil of mystery.


Asunto(s)
Glucólisis , Ácido Láctico , Masculino , Animales , Ácido Láctico/metabolismo , Glucólisis/fisiología , Transducción de Señal
16.
Funct Integr Genomics ; 23(3): 214, 2023 Jun 29.
Artículo en Inglés | MEDLINE | ID: mdl-37386239

RESUMEN

In eukaryotes, the genome does not emerge in a specific shape but rather as a hierarchial bundle within the nucleus. This multifaceted genome organization consists of multiresolution cellular structures, such as chromosome territories, compartments, and topologically associating domains, which are frequently defined by architecture, design proteins including CTCF and cohesin, and chromatin loops. This review briefly discusses the advances in understanding the basic rules of control, chromatin folding, and functional areas in early embryogenesis. With the use of chromosome capture techniques, the latest advancements in technologies for visualizing chromatin interactions come close to revealing 3D genome formation frameworks with incredible detail throughout all genomic levels, including at single-cell resolution. The possibility of detecting variations in chromatin architecture might open up new opportunities for disease diagnosis and prevention, infertility treatments, therapeutic approaches, desired exploration, and many other application scenarios.


Asunto(s)
Cromosomas , Genoma , Células Germinativas , Células Germinativas/citología , Cromatina , Proteínas Nucleares/química , Proteínas Nucleares/metabolismo , Diferenciación Celular , Humanos , Animales
17.
Am J Emerg Med ; 68: 213.e5-213.e9, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37120400

RESUMEN

Bronchospasm is caused by reversible constriction of the smooth muscles of the bronchial tree. This causes obstruction of the lower airways, which is commonly seen at the emergency department (ED) in patients with acute exacerbation of asthma or chronic obstructive pulmonary disease. Ventilation may be difficult in mechanically intubated patients with severe bronchospasm due to airflow limitation, air trapping, and high airway resistance. The beneficial effects of volatile inhaled anesthetic gas had been reported due to its bronchodilation properties. In this case series, we would like to share our experience delivering inhaled volatile anesthetic gas via a conserving device for three patients with refractory bronchospasm at the ED. Inhaled anesthetic gas is safe, feasible and should be considered as an alternative rescue therapy for ventilated patients with severe lower airway obstruction.


Asunto(s)
Anestésicos por Inhalación , Asma , Espasmo Bronquial , Humanos , Espasmo Bronquial/inducido químicamente , Asma/complicaciones , Asma/terapia , Pulmón , Servicio de Urgencia en Hospital
18.
J Clin Nurs ; 32(17-18): 6322-6338, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37087695

RESUMEN

AIM: To explore general ward nurses' attitudes and perceptions towards recognising and responding to clinical deterioration in a hospital with automated rapid response system activation. BACKGROUND: There is growing interest in deploying automated clinical deterioration notification systems to reduce delayed or failed recognition and response to clinical deterioration of ward patients. However, little is known about its impact on ward nurses' perspectives and work patterns. DESIGN: A mixed-methods study. METHODS: Online survey of 168 registered nurses and individual interviews with 10 registered nurses in one acute hospital in Singapore. The study adhered to the STROBE checklist for cross-sectional studies and the COREQ guidelines for qualitative studies. RESULTS: Many nurses (38.1%) rarely performed patient assessments or observations other than vital signs assessment to assess for early signs of clinical deterioration. About 30% were worried about being criticised for calling the primary team doctors. Four themes emerged from the qualitative analysis: automated rapid response system activation as a safety net, being more cautious with vital signs monitoring, the NEWS2 alone is inadequate, and ward nurses as the 'middleman' between the intensive care unit outreach nurse and primary team doctors. CONCLUSIONS: Although nurses value the automated rapid response system activation as a safety net to minimise delays in accessing urgent critical care resources, it does not address the sociocultural barriers inherent in escalation of care. Although the automated system led nurses to be more cautious with vital signs monitoring, it does not encourage them to perform comprehensive patient assessments to detect early signs of deterioration. RELEVANCE TO CLINICAL PRACTICE: Nurse education on assessing for clinical deterioration should focus on the use of broader patient assessment skills other than vital signs. Sociocultural barriers to escalation of care remain a key issue that needs to be addressed by hospital management. NO PATIENT OR PUBLIC CONTRIBUTION: No patients, service users, care-givers or members of the public were involved in the study.


Asunto(s)
Deterioro Clínico , Enfermeras y Enfermeros , Humanos , Estudios Transversales , Unidades de Cuidados Intensivos , Actitud
19.
Oman J Ophthalmol ; 16(1): 145-147, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37007265

RESUMEN

A 62-year-old female presented with complaints of persistent phantosmia (foul smell) for the last 4 months. She has a past history of right-sided dacryocystorhinostomy (DCR) 18 months back and left-sided DCR 12 months back. In the initial follow-up period, the patient had frequent visits to her otolaryngologist and ophthalmologist. She experienced phantosmia often but was reassured. The patient presented to us and was examined in an operation theater. It was discovered that the foul-smelling foreign body was present in her right nasal cavity above the middle turbinate. It was removed. A retained gauze piece was revealed to be a cause of phantosmia. The purpose of reporting is to create awareness among ophthalmologists and otolaryngologists. Retained gauze piece following DCR surgery presenting as phantosmia is a new symptom after DCR surgery previously not reported in the literature. Repeated complaints of a postoperative patient, should be dealt with vigilantly and timely.

20.
Children (Basel) ; 10(2)2023 Feb 20.
Artículo en Inglés | MEDLINE | ID: mdl-36832537

RESUMEN

INTRODUCTION: In developing countries, neonatal mortality is the most neglected health issue by the health system, leading to its emergence as a public health problem. A study was undertaken to assess the influence of factors and newborn care practices influencing newborn health in the rural area of Bareilly district. METHODOLOGY: The descriptive cross-sectional study was organized in the rural areas of Bareilly. Study participants were selected based on the mothers who gave birth to a baby during the last six months. The mothers who delivered in that area within six months were included and, using the semi-structured questionnaire, data were collected. Data were analyzed using Microsoft Excel and SPSS 2021 version for windows. RESULTS: Out of 300 deliveries, nearly one-quarter of the deliveries, 66 (22%), were happening in homes, and most of the deliveries, 234 (78%), happened in hospitals. It was observed that unsafe cord care practices were observed more among nuclear families, 8 (53.4%), than joint families, 7 (46.6%), and it was found to be statistically insignificant. The Unsafe feed was given 48 (72.7%) more commonly among home deliveries than institutional deliveries 56 (23.9%). Mothers' initiation of delayed breastfeeding was nearly the same in both home and hospital deliveries. Delayed bathing was observed in nearly three-fourths of mothers, 125 (70.1%), aged 24-29 years, followed by 29 (16.8%) in the age period of 30-35 years. CONCLUSION: The practice of essential newborn care still needs to improve in Bareilly; there is a need to create awareness among the mothers and family members on newborn and early neonatal care aspects, such as promoting exclusive and early initiation of breastfeeding and delayed bathing practices.

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