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1.
Mol Genet Genomics ; 299(1): 34, 2024 Mar 13.
Artículo en Inglés | MEDLINE | ID: mdl-38478130

RESUMEN

Staphylococcus aureus (S. aureus) is an opportunistic gram-positive, non-motile, and non-sporulating bacteria that induces pneumonia, a provocative lung infection affecting mainly the terminal bronchioles and the small air sacs known as alveoli. Recently, it has developed antibiotic resistance to the available consortium as per the WHO reports; thereby, novel remedial targets and resilient medications to forestall and cure this illness are desperately needed. Here, using pan-genomics, a total of 1,387 core proteins were identified. Subtractive proteome analyses further identified 12 proteins that are vital for bacteria. One membrane protein (secY) and two cytoplasmic proteins (asd and trpG) were chosen as possible therapeutic targets concerning minimum % host identity, essentiality, and other cutoff values, such as high resistance in the MDR S. aureus. The UniProt AA sequences of the selected targets were modelled and docked against 3 drug-like chemical libraries. The top-ranked compounds i.e., ZINC82049692, ZINC85492658 and 3a of Isosteviol derivative for Aspartate-semialdehyde dehydrogenase (asd); ZINC38222743, ZINC70455378, and 5 m Isosteviol derivative for Anthranilate synthase component II (trpG); and finally, ZINC72292296, ZINC85632684, and 7 m Isosteviol derivative for Protein translocase subunit secY (secY), were further subjected to molecular dynamics studies for thermodynamic stability and energy calculation. Our study proposes new therapeutic targets in S. aureus, some of which have previously been reported in other pathogenic microorganisms. Owing to further experimental validation, we anticipate that the adapted methodology and the predicted results in this work could make major contributions towards novel drug discovery and their targets in S. aureus caused pneumonia.


Asunto(s)
Diterpenos de Tipo Kaurano , Neumonía , Staphylococcus aureus , Animales , Staphylococcus aureus/genética , Aspartato-Semialdehído Deshidrogenasa , Genómica/métodos , Antibacterianos/farmacología , Descubrimiento de Drogas
2.
Cancer Control ; 31: 10732748241292784, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39397738

RESUMEN

BACKGROUND AND OBJECTIVE: Pancreatic cancer (PC) is a significant cause of cancer-related mortality, with limited curative options and high rates of cachexia, a debilitating syndrome associated with poor prognosis. While previous research has linked sarcopenia to poor outcomes in PC, the correlation between cachexia and treatment outcomes remains underexplored. This meta-analysis aims to investigate the association between cachexia and overall survival and time to treatment failure in advanced PC patients undergoing first-line chemotherapy. METHOD: A systematic search of electronic databases was conducted following PRISMA guidelines. Eligible studies compared cachexic and non-cachexic PC patients, reporting outcomes of observed survival or time to treatment failure. Data extraction and analysis were performed using Comprehensive Meta-Analysis Version 3.3, employing random-effects models and sensitivity analyses to assess heterogeneity and bias. RESULTS: Seven observational studies involving 2834 PC patients were included. The incidence of cachexia was 45% (95% CI: 0.27-0.65), with a higher prevalence in East Asian populations. Cachexic patients experienced significantly earlier treatment failure (SDM: -2.22, 95% CI: -2.6 to -1.7, P = 0.0001) and higher mortality risk (HR: 2.02, 95% CI: 1.17-3.48, P = 0.011) compared to non-cachexic patients. Overall survival was lower in cachexic patients (SDM: -2.34, 95% CI: -3.7 to -0.90, P = 0.001), with considerable heterogeneity across studies. Meta-regression analysis revealed significant differences between countries but insignificant correlations with age. CONCLUSION: Cachexia is associated with reduced overall survival, early chemotherapy failure, and elevated mortality in advanced PC patients undergoing first-line chemotherapy. Recognition and management of cachexia are crucial for optimizing treatment outcomes and improving patient survival. Future research should focus on prospective studies to better understand the impact of cachexia on treatment response and develop tailored interventions to mitigate its adverse effects.


Pancreatic cancer (PC) presents a formidable challenge due to its limited treatment options and association with cachexia, a debilitating condition linked to poor prognosis. This meta-analysis investigates the relationship between cachexia and treatment outcomes in advanced PC patients undergoing first-line chemotherapy. Seven observational studies encompassing 2834 patients were analyzed, revealing a 45% incidence of cachexia, notably higher in East Asian populations. Cachexic patients exhibited earlier treatment failure and higher mortality risk compared to non-cachexic counterparts. Their overall survival was significantly reduced, although with notable heterogeneity across studies. Meta-regression analysis highlighted variations between countries but found no significant correlation with age. The findings underscore the importance of recognizing and addressing cachexia to optimize treatment outcomes and enhance patient survival. Future research should emphasize prospective studies to further elucidate cachexia's impact on treatment response and develop tailored interventions to alleviate its adverse effects.


Asunto(s)
Caquexia , Neoplasias Pancreáticas , Caquexia/etiología , Caquexia/mortalidad , Caquexia/tratamiento farmacológico , Humanos , Neoplasias Pancreáticas/tratamiento farmacológico , Neoplasias Pancreáticas/mortalidad , Neoplasias Pancreáticas/complicaciones , Resultado del Tratamiento , Pronóstico
3.
Malar J ; 23(1): 255, 2024 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-39180068

RESUMEN

BACKGROUND: Seasonal malaria chemoprevention (SMC) is a World Health Organization-recommended intervention for the prevention of malaria among children at high risk in areas with seasonal transmission. During the coronavirus disease 2019 (COVID-19) pandemic, SMC drug distribution was rapidly adapted to reduce contact and mitigate the risk of transmission between communities and community distributors, with caregivers administering doses. To address the challenges and find local solutions to improve administration and adherence, the role model approach was designed, implemented and evaluated in selected communities of Burkina Faso, Chad and Togo. This paper describes the results of this evaluation. METHODS: Focus group discussions were held with primary caregivers in all three countries to understand their perceptions of the approach's acceptability and feasibility. In Burkina Faso and Togo, household surveys assessed the characteristics of caregivers reached by role model activities. Key indicators on SMC coverage and adherence allowed for an assessment of caregiver engagement outcomes related to participation in activities. Statistical associations between participation in study's activities and caregiver beliefs related to SMC had been tested. RESULTS: The majority of caregivers believed the approach to have a positive effect on drug administration, with most adopting the promoted strategies. Greater involvement of fathers in drug administration and acknowledgement of their joint responsibility was a notable positive outcome. However, several barriers to participation were noted and there was criticism of the group approach. In Burkina Faso and Togo, end-of-round survey results revealed that 98.4% of respondents agreed the approach improved their knowledge and skills in malaria prevention, while 100% expressed a desire to continue practicing the behaviours learned. However, there was a relatively low level of awareness of the approach among communities. Participation was strongly associated with participants' self-reported belief in ease of remembering to administer, and ease of administering, SMC medicines. CONCLUSION: Caregivers perceived the role model approach to be beneficial in aiding drug administration, with other positive impacts also reported. Replication and scale-up should utilize the most popular communication channels and existing community structures to ensure activities are promoted effectively. A mixture of group and one-on-one approaches should be used where appropriate and feasible.


Asunto(s)
Amodiaquina , Antimaláricos , Cuidadores , Combinación de Medicamentos , Malaria , Pirimetamina , Sulfadoxina , Humanos , Togo , Burkina Faso , Antimaláricos/administración & dosificación , Antimaláricos/uso terapéutico , Cuidadores/psicología , Cuidadores/estadística & datos numéricos , Preescolar , Lactante , Malaria/prevención & control , Pirimetamina/administración & dosificación , Pirimetamina/uso terapéutico , Sulfadoxina/administración & dosificación , Sulfadoxina/uso terapéutico , Chad , Amodiaquina/administración & dosificación , Amodiaquina/uso terapéutico , Femenino , Masculino , Grupos Focales , Adulto
4.
BMC Neurol ; 24(1): 330, 2024 Sep 07.
Artículo en Inglés | MEDLINE | ID: mdl-39244547

RESUMEN

BACKGROUND & AIMS: Chronic migraine poses a global health burden, particularly affecting young women, and has substantial societal implications. This study aimed to assess the efficacy of Greater Occipital Nerve Block (GONB) in individuals with chronic migraine, focusing on the impact of local anesthetics compared with placebo. METHODS: A meta-analysis and systematic review were conducted following the PRISMA principles and Cochrane Collaboration methods. Eligible studies included case-control, cohort, and randomized control trials in adults with chronic migraine, adhering to the International Classification of Headache Disorders, third edition (ICHD3). Primary efficacy outcomes included headache frequency, duration, and intensity along with safety assessments. RESULTS: Literature searches across multiple databases yielded eight studies for qualitative analysis, with five included in the final quantitative analysis. A remarkable reduction in headache intensity and frequency during the first and second months of treatment with GONB using local anesthetics compared to placebo has been reported. The incidence of adverse events did not differ significantly between the intervention and placebo groups. CONCLUSION: The analysis emphasized the safety and efficacy of GONB, albeit with a cautious interpretation due to the limited number of studies and relatively small sample size. This study advocates for further research exploring various drugs, frequencies, and treatment plans to enhance the robustness and applicability of GONB for chronic migraine management.


Asunto(s)
Trastornos Migrañosos , Bloqueo Nervioso , Humanos , Bloqueo Nervioso/métodos , Enfermedad Crónica , Anestésicos Locales/administración & dosificación , Anestésicos Locales/uso terapéutico , Resultado del Tratamiento
5.
BMC Cardiovasc Disord ; 24(1): 546, 2024 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-39385070

RESUMEN

BACKGROUND: It is well-known that serum uric acid (SUA) can increase the risk of hypertension, diabetes, obesity and dyslipidemia. However, its independent association with the risk of cardiovascular diseases (CVD) is controversial particularly in different populations. Hence, this study was aimed to assess an independent association of SUA with CVD risk in a Punjabi Pakistani cohort. METHODS: This is a retrospective observational study in which 502 human subjects having CVD, hypertension and/or diabetes were grouped based on SUA levels as normouricemia (n = 266) and hyperuricemia (n = 236). Role of SUA was assessed in increasing the risk of CVD independent of other key confounding factors (i.e. age, gender, dyslipidemia, hypertension, diabetes, dietary and life-style habits). All clinical and biochemical data were analyzed in SPSS (ver. 20). RESULTS: Subjects aged 55 ± 13 years were of both genders (males: 52%). SUA levels were significantly different among clinical subtypes of CVD [i.e. acute coronary syndrome (ACS), myocardial infarction (MI) and heart failure (HF)]. Spearman correlation showed a significantly positive association between CVD and SUA (rho = 0.149, p < 0.001). Multivariate logistic regression of SUA quartiles showed that hyperuricemia is associated with CVD [3rd quartile: OR: 1.78 (CI: 1.28-2.48), p = 0.001 and 4th quartile: OR: 2.37 (CI: 1.72-3.27), p < 0.001]. Moreover, this association remained significant even after adjusting for confounding factors. CONCLUSION: This study showed that SUA is positively associated with CVD, thus it can act as an independent risk factor for CVD.


Asunto(s)
Biomarcadores , Enfermedades Cardiovasculares , Hiperuricemia , Ácido Úrico , Humanos , Masculino , Ácido Úrico/sangre , Femenino , Persona de Mediana Edad , Estudios Retrospectivos , Hiperuricemia/sangre , Hiperuricemia/diagnóstico , Hiperuricemia/epidemiología , Pakistán/epidemiología , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/epidemiología , Adulto , Biomarcadores/sangre , Anciano , Medición de Riesgo , Factores de Riesgo de Enfermedad Cardiaca , Hipertensión/sangre , Hipertensión/diagnóstico , Hipertensión/epidemiología , Factores de Riesgo
6.
J Phys Chem A ; 128(23): 4663-4673, 2024 Jun 13.
Artículo en Inglés | MEDLINE | ID: mdl-38832568

RESUMEN

Organometallic species, such as organoferrate ions, are prototypical nucleophiles prone to reacting with a wide range of electrophiles, including proton donors. In solution, the operation of dynamic equilibria and the simultaneous presence of several organometallic species severely complicate the analysis of these fundamentally important reactions. This can be overcome by gas-phase experiments on mass-selected ions, which allow for the determination of the microscopic reactivity of the target species. In this contribution, we focus on the reactivity of a series of trisarylferrate complexes toward 2,2,2-trifluoroethanol and 2,2-difluoroethanol. By means of mass-spectrometric measurements, we determined the experimental bimolecular rate constants kexp of the gas-phase protolysis reactions of the trisarylferrate anions FePh3- and FeMes3- with the aforementioned acids. Based on these experiments, we carried out a dual blind challenge, inviting theoretical groups to submit their best predictions for the activation barriers and/or theoretical rate constants ktheo. This provides a unique opportunity to evaluate different computational protocols under minimal bias and sets the stage for further benchmarking of quantum chemical methods and data-driven approaches in the future.

7.
Planta Med ; 90(12): 959-970, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39079700

RESUMEN

The present study endeavored to design and develop a self-nanoemulsifying drug delivery system to improve the solubility and dermatological absorption of curcumin and naringin. Curcumin and naringin-loaded self-nanoemulsifying drug delivery system formulations were developed using aqueous phase titration. Phase diagrams were used to pinpoint the self-nanoemulsifying drug delivery system zones. Tween 80 and Labrasol (surfactants), Transcutol (cosurfactant), and cinnamon oil were chosen from a large pool of surfactants, cosurfactants, and oils based on their solubility and greatest nano-emulsion region. Fourier transform infrared spectroscopy, zeta sizer, and atomic force microscopy were used to characterize the optimized formulations and test for dilution and thermodynamic stability. The optimized curcumin-naringin-self-nanoemulsifying drug delivery system demonstrated the following characteristics: polydispersity index (0.412 ± 0.03), % transmittance (97%), particle size (212.5 ± 05 nm), zeta potential (- 25.7 ± 1.80 mV) and having a smooth and spherical droplet shape, as shown by atomic force microscopy. The ability of their combined formulation to cure wounds was tested in comparison to pure curcumin suspension, empty self-nanoemulsifying drug delivery system, and standard fusidic acid. Upon topical administration, the optimized curcumin-naringin-self-nanoemulsifying drug delivery system demonstrated significant wound healing activity in comparison with a pure curcumin suspension, empty self-nanoemulsifying drug delivery system, and standard fusidic acid. Based upon this result, we assume that skin penetration was increased by using the optimized curcumin-naringin-self-nanoemulsifying drug delivery system with enhanced solubility.


Asunto(s)
Curcumina , Sistemas de Liberación de Medicamentos , Emulsiones , Flavanonas , Polisorbatos , Tensoactivos , Cicatrización de Heridas , Curcumina/administración & dosificación , Curcumina/química , Curcumina/farmacología , Curcumina/farmacocinética , Animales , Flavanonas/química , Flavanonas/administración & dosificación , Flavanonas/farmacología , Cicatrización de Heridas/efectos de los fármacos , Polisorbatos/química , Tensoactivos/química , Solubilidad , Ratas , Tamaño de la Partícula , Glicéridos/química , Masculino , Nanopartículas/química , Espectroscopía Infrarroja por Transformada de Fourier , Ratas Wistar , Glicoles de Etileno
8.
Am J Emerg Med ; 76: 41-47, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37988980

RESUMEN

BACKGROUND: The choice of fluid resuscitation in Traumatic Hemorrhagic shock (THS) remains a critical aspect of patient management. Bicarbonated Ringers solution (BRS) has shown promise due to its composition resembling human Extracellular Fluid and its potential benefits on hemodynamics. OBJECTIVE: To evaluate the efficacy, mortality rates, hemodynamic effects, and adverse outcomes of Sodium Bicarbonate Ringer's Solution in the treatment of hemorrhagic shock, as compared to other relevant interventions. METHOD: A comprehensive examination of the available literature was performed by conducting systematic searches in prominent databases such as Cochrane, EMBASE, MEDLINE, and PubMed. The process employed predefined criteria to extract relevant data and evaluate the quality of the studies. The outcome measures considered encompassed survival rates, mortality, mean arterial pressure (MAP), heart rate (HR), and adverse events. RESULT: The meta-analysis of three studies showed that compared to the other crystalloids, the use of BRS had an odds ratio for survival of 1.86 (95% CI: 0.94, 3.71; p = 0.08; I2 = 0%), an odds ratio for total adverse events of 0.14 (95% CI: 0.06, 0.35; p < 0.0001; I2 = 22%), a mean difference in heart rate of -4.49 (95% CI: -7.55, -1.44; p = 0.004; I2 = 13%), and a mean difference in mean arterial pressure of 2.31 (95% CI: -0.85, 5.47; p = 0.15; I2 = 66%). CONCLUSION: BRS demonstrated a significant reduction in complications, including adult respiratory distress syndrome (ARDS), Multiple Organ Dysfunction (MODS), and Total Adverse Effects, when compared to other solutions in the treatment of THS. Additionally, THS patients resuscitated with BRS experienced a notable decrease in heart rate. The findings suggest BRS may contribute to organ stability and potential survival improvement due to its similarity to human Extracellular Fluid and minimal impact on the liver.


Asunto(s)
Choque Hemorrágico , Humanos , Choque Hemorrágico/tratamiento farmacológico , Choque Hemorrágico/complicaciones , Solución de Ringer , Soluciones Cristaloides/uso terapéutico , Bicarbonato de Sodio , Soluciones Isotónicas/uso terapéutico , Hemorragia/complicaciones , Resucitación/métodos
9.
Am J Emerg Med ; 78: 188-195, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38301369

RESUMEN

OBJECTIVE: This study aimed to assess the impact of establishing a pre-hospital definitive airway on mortality and morbidity compared with no prehospital airway in cases of severe traumatic brain injury (TBI). BACKGROUND: Traumatic brain injury (TBI) is a global health concern that is associated with substantial morbidity and mortality. Prehospital intubation (PHI) has been proposed as a potential life-saving intervention for patients with severe TBI to mitigate secondary insults, such as hypoxemia and hypercapnia. However, their impact on patient outcomes remains controversial. METHODS: A systematic review and meta-analysis were conducted to assess the effects of prehospital intubation versus no prehospital intubation on morbidity and mortality in patients with severe TBI, adhering to the PRISMA guidelines. RESULTS: 24 studies, comprising 56,543 patients, indicated no significant difference in mortality between pre-hospital and In-hospital Intubation (OR 0.89, 95% CI 0.65-1.23, p = 0.48), although substantial heterogeneity was noted. Morbidity analysis also showed no significant difference (OR 0.83, 95% CI 0.43-1.63, p = 0.59). These findings underscore the need for cautious interpretation due to heterogeneity and the influence of specific studies on the results. CONCLUSION: In summary, an initial assessment did not reveal any apparent disparity in mortality rates between individuals who received prehospital intubation and those who did not. However, subsequent analyses and randomized controlled trials (RCTs) demonstrated that patients who underwent prehospital intubation had a reduced risk of death and morbidity. The dependence on biased observational studies and the need for further replicated RCTs to validate these findings are evident. Despite the intricacy of the matter, it is crucial to intervene during severe airway impairment.


Asunto(s)
Manejo de la Vía Aérea , Lesiones Traumáticas del Encéfalo , Servicios Médicos de Urgencia , Intubación Intratraqueal , Humanos , Lesiones Traumáticas del Encéfalo/terapia , Lesiones Traumáticas del Encéfalo/mortalidad , Servicios Médicos de Urgencia/métodos , Manejo de la Vía Aérea/métodos , Intubación Intratraqueal/métodos
10.
Acta Neurochir (Wien) ; 166(1): 121, 2024 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-38436794

RESUMEN

OBJECTIVE: Acute subdural hematoma (ASDH) stands as a significant contributor to morbidity after severe traumatic brain injuries (TBI). The primary treatment approach for patients experiencing progressive neurological deficits or notable mass effects is the surgical removal of the hematoma, which can be achieved through craniotomy (CO) or decompressive craniectomy (DC). Nevertheless, the choice between these two procedures remains a subject of ongoing debate and controversy. MATERIALS AND METHODS: We conducted a comprehensive literature review, utilizing prominent online databases and manually searching references related to craniotomy and craniectomy for subdural hematoma evacuation up to November 2023. Our analysis focused on outcome variables such as the presence of residual subdural hematoma, the need for revision procedures, and overall clinical outcomes. RESULTS: We included a total of 11 comparative studies in our analysis, encompassing 4269 patients, with 2979 undergoing craniotomy and 1290 undergoing craniectomy, meeting the inclusion criteria. Patients who underwent craniectomy displayed significantly lower scores on the Glasgow Coma Scale (GCS) during their initial presentation. Following surgery, the DC group exhibited a significantly reduced rate of residual subdural (P = 0.009). Additionally, the likelihood of a poor outcome during follow-up was lower in the CO group. Likewise, the mortality rate was lower in the CO group compared to the craniectomy group (OR 0.63, 95% CI 0.41-0.98, I2 = 84%, P = 0.04). CONCLUSION: Our study found that CO was associated with more favorable outcomes in terms of mortality, reoperation rate, and functional outcome while DC was associated with less likelihood of residual subdural hematoma. Upon further investigation of patient characteristics who underwent into either of these interventions, it was very clear that patients in DC cohort have more serious and low pre-op characteristics than the CO group. Nonetheless, brain herniation and advanced age act as independent factor for predicting the outcome irrespective of the intervention.


Asunto(s)
Lesiones Traumáticas del Encéfalo , Craniectomía Descompresiva , Hematoma Subdural Agudo , Humanos , Hematoma Subdural Agudo/cirugía , Hematoma Subdural , Bases de Datos Factuales
11.
J Integr Neurosci ; 23(5): 98, 2024 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-38812396

RESUMEN

OBJECTIVES: In this study, we explored the effects of chiropractic spinal adjustments on resting-state electroencephalography (EEG) recordings and early somatosensory evoked potentials (SEPs) in Alzheimer's and Parkinson's disease. METHODS: In this randomized cross-over study, 14 adults with Alzheimer's disease (average age 67 ± 6 years, 2 females:12 males) and 14 adults with Parkinson's disease (average age 62 ± 11 years, 1 female:13 males) participated. The participants underwent chiropractic spinal adjustments and a control (sham) intervention in a randomized order, with a minimum of one week between each intervention. EEG was recorded before and after each intervention, both during rest and stimulation of the right median nerve. The power-spectra was calculated for resting-state EEG, and the amplitude of the N30 peak was assessed for the SEPs. The source localization was performed on the power-spectra of resting-state EEG and the N30 SEP peak. RESULTS: Chiropractic spinal adjustment significantly reduced the N30 peak in individuals with Alzheimer's by 15% (p = 0.027). While other outcomes did not reach significance, resting-state EEG showed an increase in absolute power in all frequency bands after chiropractic spinal adjustments in individuals with Alzheimer's and Parkinson's disease. The findings revealed a notable enhancement in connectivity within the Default Mode Network (DMN) at the alpha, beta, and theta frequency bands among individuals undergoing chiropractic adjustments. CONCLUSIONS: We found that it is feasible to record EEG/SEP in individuals with Alzheimer's and Parkinson's disease. Additionally, a single session of chiropractic spinal adjustment reduced the somatosensory evoked N30 potential and enhancement in connectivity within the DMN at the alpha, beta, and theta frequency bands in individuals with Alzheimer's disease. Future studies may require a larger sample size to estimate the effects of chiropractic spinal adjustment on brain activity. Given the preliminary nature of our findings, caution is warranted when considering the clinical implications. CLINICAL TRIAL REGISTRATION: The study was registered by the Australian New Zealand Clinical Trials Registry (registration number ACTRN12618001217291 and 12618001218280).


Asunto(s)
Enfermedad de Alzheimer , Estudios Cruzados , Electroencefalografía , Potenciales Evocados Somatosensoriales , Enfermedad de Parkinson , Humanos , Femenino , Masculino , Enfermedad de Parkinson/fisiopatología , Enfermedad de Parkinson/terapia , Anciano , Enfermedad de Alzheimer/fisiopatología , Enfermedad de Alzheimer/terapia , Persona de Mediana Edad , Potenciales Evocados Somatosensoriales/fisiología , Proyectos Piloto , Manipulación Quiropráctica/métodos
12.
Inflammopharmacology ; 32(1): 643-656, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37864684

RESUMEN

The current study was designed to evaluate the 2-hydroxybenzohydrazide (HBH) as a drug having efficacy against pyrexia, inflammation, and nociception. Besides, the therapeutic effects of HBH on oxidative stress and C-reactive proteins were also evaluated. The pharmacological studies on HBH (20-60 mg/kg) were conducted using nociception, inflammation, and pyrexia standard models. Naloxone antagonism was performed to assess the possible involvement of opioidergic mechanisms. The antioxidant study was conducted on ABTS and DPPH assays using gallic acid as a standard. Moreover, the binding capability of HBH with enzymes cyclooxygenase-I/II (COX-I/II) was determined using molecular modeling analysis. The findings indicated that the HBH dose-dependently inhibited pain, inflammation, and pyrexia. The HBH has significant anti-nociceptive and anti-inflammatory activities at 60 mg/kg (***p < 0.001), similar to the lower doses of diclofenac sodium (50 mg/kg) and tramadol (30 mg/kg). The HBH at 60 mg/kg reduced pyrexia as paracetamol (150 mg/kg). The HBH at 20-60 mg/kg doses declined the plasma C-reactive protein concentration. The mechanistic studies showed that the anti-nociceptive effect of HBH was antagonized by naloxone, indicating that the opioidergic mechanisms are involved. Furthermore, computational studies showed that the HBH exhibited an affinity for COX-I/II target receptors. The HBH significantly inhibited ABTS and DPPH radicals (IC50 = 33.81 and 26.74 µg/ml). These results proposed that the HBH has significant antipyretic, anti-inflammatory, and anti-nociceptive activities involving opioidergic mechanism.


Asunto(s)
Analgésicos , Benzotiazoles , Hidrazinas , Extractos Vegetales , Ácidos Sulfónicos , Humanos , Analgésicos/farmacología , Analgésicos/uso terapéutico , Extractos Vegetales/farmacología , Nocicepción , Antiinflamatorios/farmacología , Antiinflamatorios/uso terapéutico , Fiebre/tratamiento farmacológico , Inflamación/tratamiento farmacológico , Naloxona/farmacología , Naloxona/uso terapéutico , Ciclooxigenasa 2
13.
Arch Microbiol ; 206(1): 17, 2023 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-38085340

RESUMEN

Cervical cancer is the fourth most common type of cancer in women worldwide. It is widely accepted that the main cause of cervical cancer, especially in underdeveloped countries like Pakistan, is the infection caused by the human papillomavirus (HPV). The current screening and diagnostic methods face several challenges in accurately detecting the various types of lesions caused by HPV. Therefore, the present study was conducted to assess the effectiveness of p16 immunohistochemistry (IHC) analysis as a diagnostic method in samples of cervical biopsies. One hundred cervical biopsy samples were obtained from female patients across various age groups (> 20- ≤ 30, > 31- ≤ 40, > 41- ≤ 50, > 51- ≤ 60 years). These samples were subsequently prepared for subsequent examination. All samples were analyzed using automated tissue processing followed by Hematoxylin and Eosin (H & E) staining, and p16 IHC tumour marker staining. The H & E slides showed changes in normal cervical tissues, while four cervical abnormalities were identified statistically significant using p16 marker including chronic cervicitis, nabothian cyst formation, cervical intraepithelial neoplasia, and cervical cancers (P value 0.014). Furthermore, among females of different age groups (> 31- ≤ 40, > 41- ≤ 50, > 51- ≤ 60 years) were found statistically significant suffering from cervical cancer (P value 0.04), HPV with cervical cancer (P value 0.01), HPV with cervical intraepithelial neoplasia (P value 0.01). Based on the available data, it can be inferred that the incorporation of the p16 tumor marker may be a valuable method for detecting high-risk HPV in cervical biopsies samples.


Asunto(s)
Infecciones por Papillomavirus , Displasia del Cuello del Útero , Neoplasias del Cuello Uterino , Femenino , Humanos , Persona de Mediana Edad , Biomarcadores de Tumor/análisis , Biomarcadores de Tumor/metabolismo , Biopsia , Virus del Papiloma Humano , Infecciones por Papillomavirus/diagnóstico , Infecciones por Papillomavirus/patología , Displasia del Cuello del Útero/diagnóstico , Displasia del Cuello del Útero/patología , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/patología , Adulto Joven , Adulto
14.
MAGMA ; 2023 Nov 18.
Artículo en Inglés | MEDLINE | ID: mdl-37978992

RESUMEN

BACKGROUND: Magnetic Resonance Imaging (MRI) is a highly demanded medical imaging system due to high resolution, large volumetric coverage, and ability to capture the dynamic and functional information of body organs e.g. cardiac MRI is employed to assess cardiac structure and evaluate blood flow dynamics through the cardiac valves. Long scan time is the main drawback of MRI, which makes it difficult for the patients to remain still during the scanning process. OBJECTIVE: By collecting fewer measurements, MRI scan time can be shortened, but this undersampling causes aliasing artifacts in the reconstructed images. Advanced image reconstruction algorithms have been used in literature to overcome these undersampling artifacts. These algorithms are computationally expensive and require a long time for reconstruction which makes them infeasible for real-time clinical applications e.g. cardiac MRI. However, exploiting the inherent parallelism in these algorithms can help to reduce their computation time. METHODS: Low-rank plus sparse (L+S) matrix decomposition model is a technique used in literature to reconstruct the highly undersampled dynamic MRI (dMRI) data at the expense of long reconstruction time. In this paper, Compressed Singular Value Decomposition (cSVD) model is used in L+S decomposition model (instead of conventional SVD) to reduce the reconstruction time. The results provide improved quality of the reconstructed images. Furthermore, it has been observed that cSVD and other parts of the L+S model possess highly parallel operations; therefore, a customized GPU based parallel architecture of the modified L+S model has been presented to further reduce the reconstruction time. RESULTS: Four cardiac MRI datasets (three different cardiac perfusion acquired from different patients and one cardiac cine data), each with different acceleration factors of 2, 6 and 8 are used for experiments in this paper. Experimental results demonstrate that using the proposed parallel architecture for the reconstruction of cardiac perfusion data provides a speed-up factor up to 19.15× (with memory latency) and 70.55× (without memory latency) in comparison to the conventional CPU reconstruction with no compromise on image quality. CONCLUSION: The proposed method is well-suited for real-time clinical applications, offering a substantial reduction in reconstruction time.

15.
Neurosurg Rev ; 47(1): 12, 2023 Dec 13.
Artículo en Inglés | MEDLINE | ID: mdl-38091115

RESUMEN

BACKGROUND: Trigeminal neuralgia (TN) is a chronic condition characterized by intense facial pain akin to electric shocks, often associated with the trigeminal nerve. It can be either idiopathic or secondary, with multiple sclerosis (Ms) being a significant contributing factor. Non-responsive patients may opt for minimally invasive procedures, such as gamma knife radiosurgery (GKRS), which offers precise, non-invasive treatment and is frequently chosen as a primary approach. This meta-analysis evaluates the long-term efficacy of GKRS in TN management in Ms patients. METHODS: We conducted a focused search across various databases. Inclusion criteria encompassed studies with ≥ 30 patients using GKRS for TN in Ms, reporting pertinent clinical outcomes. Primary outcomes assessed GKRS efficacy through Barrow Neurological Institute Pain scores. Secondary outcomes encompassed bothersome numbness, facial numbness, and recurrence. Data analysis employed OpenMeta, random effect models, and odds ratios with 95% confidence intervals. Heterogeneity was assessed using I2 statistics. RESULTS: Fourteen studies with 752 cases of GKRS for TN were included. Regarding the outcomes, 83% of patients experienced a positive initial pain response, while the overall treatment success rate was 51%. Additionally, 19.6% of patients reported facial numbness, 4.1% experienced bothersome numbness, and 40% faced recurrence. The odds ratio for positive initial pain response was 0.83 (95% CI, 0.76-0.89), while for treatment success, it was 0.51 (95% CI, 0.379-0.639). Facial numbness had an odds ratio of 0.196 (95% CI, 0.130-0.262), bothersome numbness had an odds ratio of 0.041 (95% CI, 0.013-0.069), and recurrence had an odds ratio of 0.403 (95% CI, 0.254-0.551). CONCLUSIONS: In conclusion, treating trigeminal neuralgia in multiple sclerosis patients remains challenging. GKRS shows promise, but customized treatment approaches tailored to individual patient characteristics are urgently needed to address the unique challenges of this condition.


Asunto(s)
Esclerosis Múltiple , Radiocirugia , Neuralgia del Trigémino , Humanos , Neuralgia del Trigémino/cirugía , Radiocirugia/métodos , Esclerosis Múltiple/complicaciones , Esclerosis Múltiple/cirugía , Hipoestesia/complicaciones , Hipoestesia/cirugía , Resultado del Tratamiento , Dolor/cirugía , Estudios Retrospectivos , Estudios de Seguimiento
16.
Sensors (Basel) ; 23(6)2023 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-36991594

RESUMEN

This paper proposes a concept of dielectric characterization of low-volume liquid samples using the coupling coefficient of filters. The concept is validated through a two-pole substrate integrated waveguide filter in which the liquid under test is mounted on the coupling section between the two resonators. Unlike the conventional resonator perturbation method reported many times in the literature, this technique uses the coupling coefficient for sensing. The liquid sample is collected in a capillary tube and carefully positioned on the coupling section of the filter; the coupling coefficient of the two resonators varies compared to the relative permittivity of the sample; thus, an empirical model is established. The proposed sensor has been tested to compute the permittivity of different alcohols. Binary solutions of ethanol and water have also been characterized to calculate the volume ratio and relative permittivity as a proof-of-concept. The obtained results show that the proposed sensing technique is capable of characterizing a low quantity of liquids (≈44 µL) with good accuracy, and a worst case measured error of only 6.8% is noted. The ease of integration with other circuitry, low cost, reusability with no deterioration, and adaptability of the proposed sensor makes it a suitable choice for the chemical as well as for the pharmaceutical industry.

17.
Molecules ; 28(20)2023 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-37894632

RESUMEN

In this research, we focused on the production of amylose-lipid nanocomposite material (ALN) through a green synthesis technique utilizing high-speed homogenization. Our aim was to investigate this novel material's distinctive physicochemical features and its potential applications as a low-glycemic gelling and functional food ingredient. The study begins with the formulation of the amylose-lipid nanomaterial from starch and fatty acid complexes, including stearic, palmitic, and lauric acids. Structural analysis reveals the presence of ester carbonyl functionalities, solid matrix structures, partial crystallinities, and remarkable thermal stability within the ALN. Notably, the ALN exhibits a significantly low glycemic index (GI, 40%) and elevated resistance starch (RS) values. The research extends to the formulation of ALN into nanocomposite hydrogels, enabling the evaluation of its anthocyanin absorption capacity. This analysis provides valuable insights into the rheological properties and viscoelastic behavior of the resulting hydrogels. Furthermore, the study investigates anthocyanin encapsulation and retention by ALN-based hydrogels, with a particular focus on the influence of pH and physical cross-link networks on the uptake capacity presenting stearic-acid (SA) hydrogel with the best absorption capacity. In conclusion, the green-synthesized (ALN) shows remarkable functional and structural properties. The produced ALN-based hydrogels are promising materials for a variety of applications, such as medicine administration, food packaging, and other industrial purposes.


Asunto(s)
Amilosa , Nanocompuestos , Amilosa/química , Hidrogeles/química , Antocianinas , Almidón/química , Nanocompuestos/química , Nanogeles
18.
Adv Skin Wound Care ; 36(5): 259-266, 2023 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-37079789

RESUMEN

OBJECTIVE: Information on sternal wound management in children after cardiac surgery is limited. The authors formulated a pediatric sternal wound care schematic incorporating concepts of interprofessional wound care and the wound bed preparation paradigm including negative-pressure wound therapy and surgical techniques to expedite and streamline wound care in children. METHODS: Authors assessed knowledge about sternal wound care among nurses, surgeons, intensivists, and physicians in a pediatric cardiac surgical unit regarding the latest concepts such as wound bed preparation, NERDS and STONEES criteria for wound infection, and early use of negative-pressure wound therapy or surgery. Management pathways for superficial and deep sternal wounds and a wound progress chart were prepared and introduced in practice after education and training. RESULTS: The cardiac surgical unit team members demonstrated a lack of knowledge about the current concepts of wound care, although this improved after education. The newly proposed management pathway/algorithm for superficial and deep sternal wounds and a wound progress assessment chart were introduced into practice. Results in 16 observed patients were encouraging, leading to complete healing and no mortality. CONCLUSIONS: Managing pediatric sternal wounds after cardiac surgery can be streamlined by incorporating evidence-based current wound care concepts. In addition, the early introduction of advanced care techniques with appropriate surgical closure further improves outcomes. A management pathway for pediatric sternal wounds is beneficial.


Asunto(s)
Procedimientos Quirúrgicos Cardíacos , Infección de la Herida Quirúrgica , Humanos , Niño , Infección de la Herida Quirúrgica/terapia , Resultado del Tratamiento , Esternón/cirugía , Cicatrización de Heridas
19.
Waste Manag Res ; 41(2): 376-388, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36373335

RESUMEN

The global market for battery electric vehicles (BEVs) is continuously increasing which results in higher material demand for the production of Li-ion batteries (LIBs). Therefore, the end of life (EOL) of batteries must be handled properly through reusing or recycling to minimize the supply chain issues in future LIBs. This study analyses the global distribution of EOL lithium nickel manganese cobalt (NMC) oxide batteries from BEVs. The Stanford estimation model is used, assuming that the lifespan of NMC batteries follows a Weibull distribution. The global sales data of NMC batteries from 2009 to 2018 were collected and the sales data from 2019 to 2030 were estimated based on historical trends and BEV development plans in the top 10 countries for BEV sales. The result shows a view of EOL NMC batteries worldwide. In 2038, China, South Korea and the United States (US) will be the three leading countries in the recovery of NMC battery materials. An overall global flow of NMC battery materials (aluminium, copper, manganese, steel, lithium and graphite/carbon) was also predicted in this research. This study estimated the waste potential of NMC battery materials specifically in the top 10 countries and also in other countries. Finally, the economic value estimation results for recovered materials indicated that copper, aluminium and manganese will have cumulative economic values of 7.9, 4.4 and 3.9 billion US dollars in 2038, respectively. As this study considers the different specific energy of NMC batteries in the coming years due to technological advancement, the findings can provide a more realistic insight into the future demand for NMC battery materials. This study reveals that a high number of EOL NMC batteries will be accumulated in 2038 in several countries. Therefore, large-scale recycling infrastructures should be set up to improve the efficiency of the recovery of battery materials.


Asunto(s)
Litio , Manganeso , Litio/química , Manganeso/química , Níquel , Cobre , Aluminio , Cobalto/química , Óxidos/química , Suministros de Energía Eléctrica , Reciclaje/métodos
20.
Int J Legal Med ; 136(2): 557-558, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34173036

RESUMEN

Fifteen autosomal STRs were evaluated using Identifiler plus kit in 121 Arain samples of Pakistan. The highly discriminatory locus was D2S1338 with value of 0.968. Allele 8 at TPOX was the most frequent with value of 0.467. No significant deviations from Hardy-Weinberg equilibrium were seen except D3S1358 and D18S51. Combined power of discrimination, combined power of exclusion, and combined matching probability were obtained as 0.9999999999999999925, 0.99999815, and 7.4897 × -18, respectively. Population differentiation test demonstrated significant differences between Arain and geographically distinct populations.


Asunto(s)
Genética de Población , Repeticiones de Microsatélite , Alelos , Dermatoglifia del ADN , Frecuencia de los Genes , Humanos , Pakistán
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