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1.
J Anim Sci ; 2024 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-39302091

RESUMEN

There is an increasing concern about using limited high-quality protein sources in the aquafeed industry. The alternative solution to this problem is cost-effective plant proteins such as soybean meal (SBM). However, it is better to improve plant protein-containing diets through processing and supplemental amino acids. This study aimed to examine the effects of fermented soybean meal (FSBM) and supplemental methionine and lysine (ML) in diets on growth, digestibility, and body and amino acid composition in Beluga (Huso huso). Two basal diets (490 g fish meal Kg-1) of fish meal (FM) and fish meal with methionine and lysine (FM+ML) were replaced by 40%, 60% and 80% of FSBM and FSBM+ML (FM, FSBM40, FSBM60, FSBM80, FM+ML, FSBM40+ML, FSBM60+ML and FSBM80+ML; 444 g kg-1 crude protein and 19.77 MJ kg-1 gross energy). The diets were fed to triplicate groups of Beluga (394.6 ± 4.3 g) 3 times daily for 56 days. Results showed that Beluga fed 80% FSBM and FSBM+ML had lower growth and feed utilization. Moreover, Beluga fed FSBM+ML performed poorer than those fed FSBM (P < 0.05). No interactions between fermented SBM and ML were observed in apparent digestibility coefficients (ADC) and body proximate composition except for ADC of crude lipid. ADC in Beluga fed 80% were less than other diets. Substitution of FSBM and FSBM+ML in diets significantly reduced dry matter, ash and crude lipid; Crude lipid increased in groups fed FSBM+ML (P < 0.05). FSBM and FSBM+ML in 60% had higher and lower total amino acids in muscle and faeces (P < 0.05), respectively. Also, excreted total amino acids in faeces increased with ML (P < 0.05). Generally, in Beluga, FSBM-containing diets showed better effects on growth, feed utilization, whole-body lipid, and muscle and faecal amino acids than those with FSBM+ML. Fermented SBM could be replaced up to 60%.

2.
NPJ Vaccines ; 9(1): 155, 2024 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-39198486

RESUMEN

The global population is increasingly reliant on vaccines to maintain population health with billions of doses used annually in immunisation programmes. Substandard and falsified vaccines are becoming more prevalent, caused by both the degradation of authentic vaccines but also deliberately falsified vaccine products. These threaten public health, and the increase in vaccine falsification is now a major concern. There is currently no coordinated global infrastructure or screening methods to monitor vaccine supply chains. In this study, we developed and validated a matrix-assisted laser desorption/ionisation-mass spectrometry (MALDI-MS) workflow that used open-source machine learning and statistical analysis to distinguish authentic and falsified vaccines. We validated the method on two different MALDI-MS instruments used worldwide for clinical applications. Our results show that multivariate data modelling and diagnostic mass spectra can be used to distinguish authentic and falsified vaccines providing proof-of-concept that MALDI-MS can be used as a screening tool to monitor vaccine supply chains.

3.
Acta Chir Plast ; 66(2): 60-66, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39174340

RESUMEN

INTRODUCTION: Smoking poses a risk to flap viability, with nicotine being a major contributor to the formation of free radicals. Allopurinol, known for its antioxidant properties, has been shown to enhance tissue survival in ischemic conditions by reducing the production of reactive oxygen species (ROS). This study aims to assess the impact of allopurinol on the viability and success of skin flaps in Wistar rats exposed to nicotine. METHODS: This study examined skin flap survival in nicotine-exposed rats treated with allopurinol. Twenty-eight rats were separated into two groups. During 1 month of nicotine exposure, the treatment group received systemic allopurinol 7 days before and 2 days after the flap procedure, while the control group received no allopurinol. Pro-angiogenic factors, proinflammatory factors, anti-inflammatory factors, and oxidative markers were assessed on the 7th day after the flap procedure using enzyme-linked immunosorbent assay method. Macroscopic flap viability was evaluated on the 7th day using Image J photos. RESULTS: As an oxidative marker, malondialdehyde levels were significantly lower in rats given allopurinol than in controls (P < 0.001). The levels of interleukin 6 and tumor necrosis factor α, as markers of inflammatory factors, were significantly lower in the group of rats given allopurinol compared to controls (P < 0.001). The level of angiogenesis in rats given allopurinol, measured by vascular endothelial growth factor levels, was also higher in the treatment group compared to controls (P < 0.001). Macroscopically, the percentage of distal flap necrosis in Wistar rats given allopurinol was lower and statistically significant compared to controls (P < 0.001). CONCLUSIONS: Xanthine oxidoreductase is part of a group of enzymes involved in reactions that produce ROS. Allopurinol, as an effective inhibitor of the xanthine oxidase enzyme, can reduce oxidative stress by decreasing the formation of ROS. This reduction in oxidative stress mitigates the risk of ischemic-reperfusion injury effects and significantly increases the viability of Wistar rat flaps exposed to nicotine.


Asunto(s)
Alopurinol , Interleucina-6 , Malondialdehído , Nicotina , Colgajos Quirúrgicos , Factor de Necrosis Tumoral alfa , Factor A de Crecimiento Endotelial Vascular , Animales , Masculino , Ratas , Alopurinol/farmacología , Supervivencia de Injerto/efectos de los fármacos , Interleucina-6/metabolismo , Malondialdehído/metabolismo , Nicotina/administración & dosificación , Nicotina/farmacología , Estrés Oxidativo/efectos de los fármacos , Ratas Wistar , Colgajos Quirúrgicos/irrigación sanguínea , Factor de Necrosis Tumoral alfa/metabolismo , Factor A de Crecimiento Endotelial Vascular/metabolismo
4.
Mar Pollut Bull ; 205: 116551, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38878413

RESUMEN

The Caspian Sea, the world's largest enclosed water body, experiences significant transformations in its physico-chemical properties and a decline in bioresources due to extensive anthropogenic activities. These activities include the discharge of diverse pollutants and bio-physical alterations such as over-fishing, hunting, and physical alterations to rivers. While acute manifestations such as a fall in the Caspian water levels and wetland desiccation are more overt, the pervasive impact of human activities contributes to a likely irreversible decline in environmental quality that we aim to spotlight in this discussion in order to facilitate its restoration.


Asunto(s)
Monitoreo del Ambiente , Océanos y Mares , Conservación de los Recursos Naturales , Humedales
5.
Ann R Coll Surg Engl ; 2024 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-38787302

RESUMEN

INTRODUCTION: Medical students often hesitate to enter the operating theatre because of poor visibility of the surgical field and anxiety about the theatre environment. In addition, ear, nose and throat (ENT) surgery is underrepresented in many medical curricula. Virtual systems like Proximie offer flexible viewing of surgeries with surgeon commentary, potentially addressing these issues. METHODS: This descriptive survey study aimed to evaluate the use of Proximie as a surgical education tool for delivering ENT teaching to medical students. Live ENT procedures were recorded at the ENT Department of the John Radcliffe Hospital and shared with interested clinical medical students through Proximie accounts. Students were added to a private group chat to ask questions and provided feedback through structured forms, assessing procedural effectiveness and the platform's technology. Live-streaming and recording of procedures were facilitated by ENT surgeons providing commentary. RESULTS: Conducted over four virtual theatre days, the study gathered 52 responses: 96% of students rated Proximie's educational value as 4 of 5 or higher; 57% preferred the virtual experience over physical attendance because of its convenience and the improved view of the surgical field. Students valued the live commentary and showed interest in using Proximie for a broader range of surgeries. Suggested improvements included fixing technical issues, better communication of theatre lists, and expanding surgical specialty coverage. CONCLUSIONS: Proximie has been highly rated by medical students for its effective and engaging approach in the instruction of surgical skills, underscoring its value as an educational tool. Future research is needed to formally assess knowledge acquisition and retention across multiple surgical subspecialties. This work is the first step towards evaluating the utility of virtual operating theatre platforms for medical student education.

6.
J Nephrol ; 37(5): 1227-1240, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38564072

RESUMEN

BACKGROUND: There is limited evidence to support definite clinical outcomes of direct oral anticoagulant (DOAC) therapy in chronic kidney disease (CKD). By identifying the important variables associated with clinical outcomes following DOAC administration in patients in different stages of CKD, this study aims to assess this evidence gap. METHODS: An anonymised dataset comprising 97,413 patients receiving DOAC therapy in a tertiary health setting was systematically extracted from the multidimensional electronic health records and prepared for analysis. Machine learning classifiers were applied to the prepared dataset to select the important features which informed covariate selection in multivariate logistic regression analysis. RESULTS: For both CKD and non-CKD DOAC users, features such as length of stay, treatment days, and age were ranked highest for relevance to adverse outcomes like death and stroke. Patients with Stage 3a CKD had significantly higher odds of ischaemic stroke (OR 2.45, 95% Cl: 2.10-2.86; p = 0.001) and lower odds of all-cause mortality (OR 0.87, 95% Cl: 0.79-0.95; p = 0.001) on apixaban therapy. In patients with CKD (Stage 5) receiving apixaban, the odds of death were significantly lowered (OR 0.28, 95% Cl: 0.14-0.58; p = 0.001), while the effect on ischaemic stroke was insignificant. CONCLUSIONS: A positive effect of DOAC therapy was observed in advanced CKD. Key factors influencing clinical outcomes following DOAC administration in patients in different stages of CKD were identified. These are crucial for designing more advanced studies to explore safer and more effective DOAC therapy for the population.


Asunto(s)
Insuficiencia Renal Crónica , Humanos , Insuficiencia Renal Crónica/complicaciones , Masculino , Femenino , Anciano , Persona de Mediana Edad , Administración Oral , Pirazoles/administración & dosificación , Pirazoles/uso terapéutico , Pirazoles/efectos adversos , Piridonas/administración & dosificación , Piridonas/efectos adversos , Piridonas/uso terapéutico , Resultado del Tratamiento , Inhibidores del Factor Xa/administración & dosificación , Inhibidores del Factor Xa/efectos adversos , Anciano de 80 o más Años , Estudios Retrospectivos , Anticoagulantes/administración & dosificación , Anticoagulantes/efectos adversos , Accidente Cerebrovascular Isquémico/mortalidad , Accidente Cerebrovascular Isquémico/epidemiología , Accidente Cerebrovascular/epidemiología , Accidente Cerebrovascular/mortalidad , Factores de Riesgo , Registros Electrónicos de Salud , Aprendizaje Automático , Tiempo de Internación
7.
PLoS One ; 19(4): e0301621, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38630691

RESUMEN

Diabetes mellitus adversely affects the contractile ability of the small intestine. However, there is a paucity of studies investigating the impact of garlic oil on small intestinal motility. This study aimed to evaluate the potential beneficial effects of garlic oil on type 2 diabetes mellitus in rats. Thirty-six adult female Wistar rats (n = 36) were divided into four groups: control, non-diabetic rats supplemented with garlic oil, diabetic rats, and diabetic rats treated with garlic oil. The rats were anesthetized using pentobarbitone (40 mg/kg BW); various motility parameters and oxidative markers were determined in small intestinal segments. Measurements were taken for naso-anal length, waist circumference, fasting blood glucose level (FBG), and plasma insulin level. Compared to the control group, the diabetic rats exhibited a reduction in the average force of contraction and motility index in all small intestinal segments. Furthermore, the rats exhibited a reduction in the average duration of muscle contraction only in the jejunum. The rats also exhibited hyperglycemia, insulin resistance, significant oxidative stress, and obesity. This was proven by changes in motility parameters, fasting blood glucose levels, HOMA-IR values, intestinal MDA levels, and waist circumference. The non-diabetic rats supplemented with garlic oil also exhibited a decrease in the average force of contraction and motility index in all small intestinal segments, despite having consistently higher Lee index and waist circumference values. However, the diabetic rats treated with garlic oil demonstrated improved small intestinal motility in nearly all small intestinal segments and a reduction in oxidative stress. In conclusion, rats with diabetes mellitus experienced a decrease in small intestinal motility, which is primarily driven by oxidative stress. Normal rats administered with garlic oil supplements exhibited similar effects. In contrast, garlic oil treatment in diabetic rats led to enhanced small intestinal motility and a notable anti-hyperglycemic effect, which can be attributed to the potent antioxidant properties of garlic oil.


Asunto(s)
Compuestos Alílicos , Diabetes Mellitus Experimental , Diabetes Mellitus Tipo 2 , Ajo , Sulfuros , Ratas , Femenino , Animales , Ratas Wistar , Glucemia , Estrés Oxidativo
9.
ANZ J Surg ; 94(6): 1071-1075, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38426382

RESUMEN

BACKGROUND: In 2015 our centre introduced a nurse-led renal cell cancer follow-up protocol and clinic for patients who have undergone partial or radical nephrectomy for organ-confined kidney tumours. The main aims of this clinic were to improve healthcare efficiency and standardize follow-up processes. OBJECTIVES: The primary objective was to assess the effectiveness of a nurse-led renal cell cancer follow up clinic in regard to surveillance protocol compliance and the timely identification and appropriate management of recurrences. A secondary objective was to evaluate this locally developed follow up protocol against the current European Association of Urology (EAU) guidelines surveillance protocol. PATIENT AND METHODS: All patients who underwent a partial or radical nephrectomy between 2015 and 2021 at a single Western Australia institution for a primary renal malignancy were included. Data was collected from local clinical information systems and protocol adherence, recurrence characteristics and management were assessed. The current EAU guidelines were applied to the cohort to assess differences in risk-stratification and theoretical outcomes between the protocols. RESULTS: After a mean follow up period of 31.2 months (range 0-77 months), 75.5% (185/245) of patients had all follow up imaging and reviews within 1 month of the timeframe scheduled on the protocol. 17.1% (42/245) had a delay in their follow up of more than a month at some stage, 5.7% (14/245) did not attend for follow up but had documented attempts to facilitate their compliance, and 0.4% (1/245) were lost to follow up with no evidence of attempted contact. 15.5% (38/245) of patients had recurrence of malignancy detected during follow up and these were all discussed in a multi-disciplinary team (MDT) meeting. The recurrence rate was 2.5% (3/119) for low risk, 17.7% (14/79) for intermediate risk, and 44.7% (21/47) for high risk patients when they were re-stratified according to EAU risk categories. No recurrences were detected through ultrasound (USS) or chest x-ray (CXR) in this cohort and our protocol tended to place patients in higher risk-stratification groups as compared to current EAU guidelines. CONCLUSION: Nurse-led renal cell cancer follow up is a safe, reliable and effective clinical framework that has significant benefits in regard to resource utilization. USS and CXR are ineffective in detecting recurrence and Computerized tomography (CT) should be considered the imaging modality of choice for this purpose. The EAU surveillance protocol appears superior to our protocol, and we have therefore transitioned to the EAU guideline protocol going forward.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Recurrencia Local de Neoplasia , Nefrectomía , Humanos , Neoplasias Renales/patología , Neoplasias Renales/diagnóstico por imagen , Carcinoma de Células Renales/patología , Masculino , Femenino , Nefrectomía/métodos , Persona de Mediana Edad , Anciano , Adhesión a Directriz , Australia Occidental , Pautas de la Práctica en Enfermería , Adulto , Anciano de 80 o más Años , Estudios de Seguimiento , Estudios Retrospectivos
10.
Vaccine ; 42(7): 1506-1511, 2024 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-38355318

RESUMEN

Substandard (including degraded) and falsified (SF) vaccines are a relatively neglected issue with serious global implications for public health. This has been highlighted during the rapid and widespread rollout of COVID-19 vaccines. There has been increasing interest in devices to screen for SF non-vaccine medicines including tablets and capsules to empower inspectors and standardise surveillance. However, there has been very limited published research focussed on repurposing or developing new devices for screening for SF vaccines. To our knowledge, rapid diagnostic tests (RDTs) have not been used for this purpose but have important potential for detecting falsified vaccines. We performed a proof-in-principle study to investigate their diagnostic accuracy using a diverse range of RDT-vaccine/falsified vaccine surrogate pairs. In an initial assessment, we demonstrated the utility of four RDTs in detecting seven vaccines. Subsequently, the four RDTs were evaluated by three blinded assessors with seven vaccines and four falsified vaccines surrogates. The results provide preliminary data that RDTs could be used by multiple international organisations, national medicines regulators and vaccine manufacturers/distributors to screen for falsified vaccines in supply chains, aligned with the WHO global 'Prevent, Detect and Respond' strategy.


Asunto(s)
Medicamentos Falsificados , Vacunas , Humanos , Prueba de Diagnóstico Rápido , Vacunas contra la COVID-19 , Salud Pública
11.
Br J Cancer ; 130(8): 1261-1268, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38383704

RESUMEN

BACKGROUND: The incidence of cancer diagnosed during pregnancy is increasing. Data relating to investigation and management, as well as maternal and foetal outcomes is lacking in a United Kingdom (UK) population. METHODS: In this retrospective study we report data from 119 patients diagnosed with cancer during pregnancy from 14 cancer centres in the UK across a five-year period (2016-2020). RESULTS: Median age at diagnosis was 33 years, with breast, skin and haematological the most common primary sites. The majority of cases were new diagnoses (109 patients, 91.6%). Most patients were treated with radical intent (96 patients, 80.7%), however, gastrointestinal cancers were associated with a high rate of palliative intent treatment (63.6%). Intervention was commenced during pregnancy in 68 (57.1%) patients; 44 (37%) had surgery and 31 (26.1%) received chemotherapy. Live births occurred in 98 (81.7%) of the cases, with 54 (55.1%) of these delivered by caesarean section. Maternal mortality during the study period was 20.2%. CONCLUSIONS: This is the first pan-tumour report of diagnosis, management and outcomes of cancer diagnosed during pregnancy in the UK. Our findings demonstrate proof of concept that data collection is feasible and highlight the need for further research in this cohort of patients.


Asunto(s)
Cesárea , Neoplasias , Embarazo , Humanos , Femenino , Estudios Retrospectivos , Neoplasias/diagnóstico , Neoplasias/epidemiología , Neoplasias/terapia , Reino Unido/epidemiología , Nacimiento Vivo
12.
CNS Neurol Disord Drug Targets ; 23(10): 1203-1216, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38279763

RESUMEN

Glioblastoma multiforme (GBM) is a highly invasive brain malignancy originating from astrocytes, accounting for approximately 30% of central nervous system malignancies. Despite advancements in therapeutic strategies including surgery, chemotherapy, and radiopharmaceutical drugs, the prognosis for GBM patients remains dismal. The aggressive nature of GBM necessitates the identification of molecular targets and the exploration of effective treatments to inhibit its proliferation. The Notch signaling pathway, which plays a critical role in cellular homeostasis, becomes deregulated in GBM, leading to increased expression of pathway target genes such as MYC, Hes1, and Hey1, thereby promoting cellular proliferation and differentiation. Recent research has highlighted the regulatory role of non-coding RNAs (ncRNAs) in modulating Notch signaling by targeting critical mRNA expression at the post-transcriptional or transcriptional levels. Specifically, various types of ncRNAs, including long non-coding RNAs (lncRNAs) and microRNAs (miRNAs), have been shown to control multiple target genes and significantly contribute to the carcinogenesis of GBM. Furthermore, these ncRNAs hold promise as prognostic and predictive markers for GBM. This review aims to summarize the latest studies investigating the regulatory effects of ncRNAs on the Notch signaling pathway in GBM.


Asunto(s)
Neoplasias Encefálicas , Glioblastoma , ARN no Traducido , Receptores Notch , Transducción de Señal , Humanos , Glioblastoma/genética , Glioblastoma/terapia , Glioblastoma/metabolismo , Receptores Notch/metabolismo , Receptores Notch/genética , Neoplasias Encefálicas/genética , Neoplasias Encefálicas/terapia , Neoplasias Encefálicas/metabolismo , ARN no Traducido/genética , Pronóstico , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , Regulación Neoplásica de la Expresión Génica
13.
J Nat Med ; 78(1): 68-77, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37690111

RESUMEN

Ceramicines are a series of limonoids which were isolated from the barks of Malaysian Chisocheton ceramicus (Meliaceae), and were known to show various biological activity. Six new limonoids, ceramicines U-Z (1-6), with a cyclopentanone[α]phenanthrene ring system with a ß-furyl ring at C-17 were isolated from the barks of C. ceramicus. Their structures were determined on the basis of the 1D and 2D NMR analyses, and their absolute configurations were investigated by CD spectroscopy. Ceramicine W (3) exhibited potent antimalarial activity against Plasmodium falciparum 3D7 strain with IC50 value of 1.2 µM. In addition, the structure-antimalarial activity relationship (SAR) of the ceramicines was investigated to identify substituent patterns that may enhance activity. It appears that ring B and the functional groups in the vicinity of rings B and C are critical for the antimalarial activity of the ceramicines. In particular, bulky ester substituents with equatorial orientation at C-7 and C-12 greatly increase the antimalarial activity.


Asunto(s)
Antimaláricos , Limoninas , Meliaceae , Antimaláricos/farmacología , Limoninas/química , Relación Estructura-Actividad , Espectroscopía de Resonancia Magnética , Meliaceae/química , Estructura Molecular
14.
Eur J Clin Pharmacol ; 80(1): 163-173, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37978999

RESUMEN

OBJECTIVE: Through predictable pharmacokinetics-including a convenient fixed-dose regimen, direct oral anticoagulants (DOACs) are preferred over previous treatments in anticoagulation for various indications. However, the association between higher body weight and the risk of adverse consequences is not well studied among DOAC users. We aim to explore the association of body weight and adverse clinical outcomes in DOAC users. METHODS: A total of 97,413 anonymised DOAC users in a tertiary care setting were identified following structured queries on the electronic health records (EHRs) to extract the feature-rich anonymised dataset. The prepared dataset was analysed, and the features identified with machine learning (ML) informed the adjustments of covariates in the multivariate regression analysis to examine the association. Kaplan-Meier analysis was performed to evaluate the mortality benefits of DOACs. RESULTS: Among DOAC users, the odds of adverse clinical outcomes, such as clinically relevant non-major bleeding (CRNMB), ischaemic stroke, all-cause mortality, and prolonged hospital stay, were lower in patients with overweight, obesity, or morbid obesity than in patients with normal body weight. The odds of ischaemic stroke (OR 0.42, 95% CI: 0.36-0.88, p = 0.001) and all-cause mortality (OR 0.87, 95% CI: 0.81-0.95, p = 0.001) were lower in patients with morbid obesity than in patients with normal body weight. In the Kaplan-Meier analysis, apixaban was associated with a significantly lower rate of mortality overall and in obesity and overweight subgroups than other DOACs (p < 0.001). However, rivaroxaban performed better than apixaban in the morbid obesity subgroup (p < 0.001). CONCLUSION: This study shows the positive effects of DOAC therapy on clinical outcomes, particularly in patients with high body weight. However, this still needs validation by further studies particularly among patients with morbid obesity.


Asunto(s)
Fibrilación Atrial , Isquemia Encefálica , Accidente Cerebrovascular Isquémico , Obesidad Mórbida , Accidente Cerebrovascular , Humanos , Warfarina , Isquemia Encefálica/tratamiento farmacológico , Obesidad Mórbida/complicaciones , Obesidad Mórbida/tratamiento farmacológico , Sobrepeso/tratamiento farmacológico , Accidente Cerebrovascular/tratamiento farmacológico , Dabigatrán/uso terapéutico , Fibrilación Atrial/tratamiento farmacológico , Estudios Retrospectivos , Anticoagulantes/efectos adversos , Rivaroxabán/uso terapéutico , Hospitales , Accidente Cerebrovascular Isquémico/tratamiento farmacológico , Administración Oral
15.
Expert Rev Med Devices ; 21(1-2): 37-54, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38030993

RESUMEN

INTRODUCTION: Sustaining a healthy weight is a challenge and obesity, with associated risk of co-morbidities, is a major public health concern. Bariatric surgery has shown a great promise for many where pharmacological and lifestyle interventions failed to work. However, challenges and limitations associated with bariatric surgery has pushed the demand for less invasive, reversible (anatomically) interventions, such as intragastric balloons (IGBs). AREAS COVERED: This review critically appraises IGBs used in the past, present, and those in clinical trials, discussing the device designs, limitations, placement and removal techniques, patient eligibility, efficacy, and safety issues. EXPERT OPINION: Several intragastric balloons were developed over the years that brought excitement to patients and healthcare professionals alike. Albeit good efficacy, there had been several safety issues reported with IGBs such as spontaneous deflation, intestinal occlusion, gut perforation, and mucosal ulcerations. This led to evolution of IGBs design; device material, filling mechanism, fluid type, inflation volume, and further innovations to ease ingestion and removal of device. There are some IGB devices under development aimed to swallow like a conventional pill and excrete naturally through defecation, however, how successful they will be in clinical practice in terms of their efficacy and tolerability remains to be seen in the future.


Asunto(s)
Cirugía Bariátrica , Balón Gástrico , Humanos , Balón Gástrico/efectos adversos , Obesidad/terapia , Cirugía Bariátrica/métodos , Diseño de Equipo , Resultado del Tratamiento
16.
Cell Signal ; 113: 110911, 2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-37805102

RESUMEN

The rewiring of cellular metabolism is a defining characteristic of cancer, as tumor cells adapt to acquire essential nutrients from a nutrient-poor environment to sustain their viability and biomass. While hypoxia has been identified as a major factor depriving cancer cells of nutrients, recent studies have revealed that cancer cells distant from supporting blood vessels also face nutrient limitations. To overcome this challenge, hypoxic cancer cells, which heavily rely on glucose as an energy source, employ alternative pathways such as glycogen metabolism and reductive carboxylation of glutamine to meet their energy requirements for survival. Our preliminary studies, alongside others in the field, have shown that under glucose-deficient conditions, hypoxic cells can utilize mannose and maltose as alternative energy sources. This review aims to comprehensively examine the hypoxic cancer microenvironment, its association with drug resistance, and potential therapeutic strategies for targeting this unique niche. Furthermore, we will critically evaluate the current literature on hypoxic cancer microenvironments and explore state-of-the-art techniques used to analyze alternate carbohydrates, specifically mannose and maltose, in complex biological fluids. We will also propose the most effective analytical methods for quantifying mannose and maltose in such biological samples. By gaining a deeper understanding of the hypoxic cancer cell microenvironment and its role in drug resistance, novel therapeutic approaches can be developed to exploit this knowledge.


Asunto(s)
Maltosa , Neoplasias , Humanos , Hipoxia de la Célula , Maltosa/farmacología , Maltosa/uso terapéutico , Manosa/farmacología , Manosa/uso terapéutico , Neoplasias/metabolismo , Hipoxia , Glucosa/farmacología , Microambiente Tumoral , Resistencia a Medicamentos
17.
Sci Rep ; 13(1): 19373, 2023 11 08.
Artículo en Inglés | MEDLINE | ID: mdl-37938631

RESUMEN

Medical imaging is considered a suitable alternative testing method for the detection of lung diseases. Many researchers have been working to develop various detection methods that have aided in the prevention of lung diseases. To better understand the condition of the lung disease infection, chest X-Ray and CT scans are utilized to check the disease's spread throughout the lungs. This study proposes an automated system for the detection multi lung diseases in X-Ray and CT scans. A customized convolutional neural network (CNN) and two pre-trained deep learning models with a new image enhancement model are proposed for image classification. The proposed lung disease detection comprises two main steps: pre-processing, and deep learning classification. The new image enhancement algorithm is developed in the pre-processing step using k-symbol Lerch transcendent functions model which enhancement images based on image pixel probability. While, in the classification step, the customized CNN architecture and two pre-trained CNN models Alex Net, and VGG16Net are developed. The proposed approach was tested on publicly available image datasets (CT, and X-Ray image dataset), and the results showed classification accuracy, sensitivity, and specificity of 98.60%, 98.40%, and 98.50% for the X-Ray image dataset, respectively, and 98.80%, 98.50%, 98.40% for the CT scans dataset, respectively. Overall, the obtained results highlight the advantages of the image enhancement model as a first step in processing.


Asunto(s)
Aprendizaje Profundo , Enfermedades Pulmonares , Humanos , Rayos X , Radiografía , Tomografía Computarizada por Rayos X , Enfermedades Pulmonares/diagnóstico por imagen
18.
Vaccine ; 41(47): 6960-6968, 2023 11 13.
Artículo en Inglés | MEDLINE | ID: mdl-37865599

RESUMEN

Preventing, detecting, and responding to substandard and falsified vaccines is of critical importance for ensuring the safety, efficacy, and public trust in vaccines. This is of heightened importance in context of public health crisis, such as the COVID-19 pandemic, in which extreme world-wide shortages of vaccines provided a fertile ground for exploitation by falsifiers. Here, a proof-of-concept study explored the feasibility of using a handheld Spatially Offset Raman Spectroscopy (SORS) device to authenticate COVID-19 vaccines through rapid analysis of unopened vaccine vials. The results show that SORS can verify the chemical identity of dominant excipients non-invasively through vaccine vial walls. The ability of SORS to identify potentially falsified COVID-19 vaccines was demonstrated by measurement of surrogates for falsified vaccines contained in vaccine vials. In all cases studied, the SORS technique was able to differentiate between surrogate samples from the genuine COVISHIELD™ vaccine. The genuine vaccines tested included samples from six batches across two manufacturing sites to account for any potential variations between batches or manufacturing sites. Batch and manufacturing site variations were insignificant. In conjunction with existing security features, for example on labels and packaging, SORS provided an intrinsic molecular fingerprint of the dominant excipients of the vaccines. The technique could be extended to other COVID-19 and non-COVID-19 vaccines, as well as other liquid medicines. As handheld and portable SORS devices are commercially available and widely used for other purposes, such as airport security, they are rapidly deployable non-invasive screening tools for vaccine authentication.


Asunto(s)
COVID-19 , Espectrometría Raman , Humanos , Espectrometría Raman/métodos , Vacunas contra la COVID-19 , Excipientes , Pandemias , COVID-19/prevención & control
19.
Eur Rev Med Pharmacol Sci ; 27(17): 8101-8109, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37750638

RESUMEN

OBJECTIVE: The aim was to investigate the effect of dapagliflozin on non-alcoholic fatty liver disease and dyslipidemia in type 2 diabetic rats by studying the histopathological structure of the liver and detecting possible underlying mechanisms for this impact by evaluating the potential anti-inflammatory action of dapagliflozin. MATERIALS AND METHODS: 100 albino rats were used in this work and divided into five equal groups: group I (Control group), group II (Control diabetic group), group III (was administered dapagliflozin, 0.75 mg/kg, p.o.), group IV (was administered dapagliflozin, 1.5 mg/kg, p.o.), and group V (was administered dapagliflozin, 3 mg/kg, p.o.). RESULTS: In our study, the total body weight, liver weight, liver index, blood glucose level, insulin level, insulin resistance, total cholesterol, triglycerides, liver enzymes, IL-1 ß, and MDA were significantly higher in the control diabetic group than the normal group. The dapagliflozin reduced all the above variables significantly in a dose-dependent manner compared to the control diabetic group (p-value = 0.001 for all). CONCLUSIONS: Dapagliflozin may be a promising novel treatment strategy for treating T2DM-related non-alcoholic fatty liver disease (NAFLD), and dyslipidemia where it possesses anti-oxidative, anti-inflammatory and anti-dyslipidemic effects.


Asunto(s)
Diabetes Mellitus Experimental , Diabetes Mellitus Tipo 2 , Dislipidemias , Enfermedad del Hígado Graso no Alcohólico , Animales , Ratas , Enfermedad del Hígado Graso no Alcohólico/tratamiento farmacológico , Diabetes Mellitus Experimental/tratamiento farmacológico , Dislipidemias/tratamiento farmacológico , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico
20.
Neurobiol Stress ; 26: 100555, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37583471

RESUMEN

Major depressive disorder (MDD) is a common mental disorder and is amongst the most prevalent psychiatric disorders. MDD remains challenging to diagnose and predict its onset due to its heterogeneous phenotype and complex etiology. Hence, early detection using diagnostic biomarkers is critical for rapid intervention. In this study, a mixture of AI and bioinformatics were used to mine transcriptomic data from publicly available datasets including 170 MDD patients and 121 healthy controls. Bioinformatics analysis using gene set enrichment analysis (GSEA) and machine learning (ML) algorithms were applied. The GSEA revealed that differentially expressed genes in MDD patients are mainly enriched in pathways related to immune response, inflammatory response, neurodegeneration pathways and cerebellar atrophy pathways. Feature selection methods and ML provided predicted models based on MDD-altered genes with ≥75% of accuracy. The integrative analysis between the bioinformatics and ML approaches identified ten key MDD-related biomarkers including NRG1, CEACAM8, CLEC12B, DEFA4, HP, LCN2, OLFM4, SERPING1, TCN1 and THBS1. Among them, NRG1, active in synaptic plasticity and neurotransmission, was the most robust and reliable to distinguish between MDD patients and healthy controls amongst independent external datasets consisting of a mixture of populations. Further evaluation using saliva samples from an independent cohort of MDD and healthy individuals confirmed the upregulation of NRG1 in patients with MDD compared to healthy controls. Functional mapping to the human brain regions showed NRG1 to have high expression in the main subcortical limbic brain regions implicated in depression. In conclusion, integrative bioinformatics and ML approaches identified putative non-invasive diagnostic MDD-related biomarkers panel for the onset of depression.

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