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1.
Langenbecks Arch Surg ; 407(5): 2187-2191, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35128578

RESUMEN

PURPOSE: Recent shift to radical extralevator abdominoperineal excision (ELAPE) approach has seen an increased incidence of post-operative perineal hernia. However, there is no standardised surgical approach for its repair. The aim of this study was to report intra and post-operative results of the perineal hernia repair by the novel trans-abdominal PERineal Laparoscopic Sling (PERLS) Technique in patients who developed post-operative perineal hernia following ELAPE. METHODS: This is a retrospective analysis of consecutive patients who underwent perineal hernia repair by laparoscopic PERLS approach. All patients had undergone ELAPE with vertical rectus abdominis muscle (VRAM) flap reconstruction during the index surgery for treatment of rectal cancer. Post-operative complications, operative time, conversion rate to open surgery and incidence of recurrent perineal hernia were noted. RESULTS: Seven patients were operated for perineal hernia. The mean operative time was 105 min (range: 87 to 131 min). One case needed conversion to the open approach. The incidence of early complications was 57.1% including just single Clavien-Dindo I and two Clavien-Dindo II complications, while recurrence rate was 14.3%. CONCLUSION: PERLS perineal hernia repair is safe, performed in convenient time duration (mean = 105 min) and has reasonably less recurrence rate.


Asunto(s)
Hernia Abdominal , Hernia Incisional , Laparoscopía , Proctectomía , Neoplasias del Recto , Hernia Abdominal/cirugía , Herniorrafia/efectos adversos , Humanos , Hernia Incisional/cirugía , Laparoscopía/efectos adversos , Perineo/cirugía , Complicaciones Posoperatorias/etiología , Proctectomía/efectos adversos , Neoplasias del Recto/cirugía , Estudios Retrospectivos
2.
Minim Invasive Ther Allied Technol ; 31(1): 24-27, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32501153

RESUMEN

OBJECTIVE: To compare the safety, operative time and feasibilty of FreeHand® robot (FreeHand Ltd, Guildford, United Kingdom) with manual camera control approach for Laparoscopic Fundoplication. MATERIAL AND METHODS: A case control study was performed for patients undergoing laparoscopic fundoplication. Primary outcome was operative time; secondary outcomes included length of stay, post-operative morbidity, symptoms at first follow-up and total post-operative out-patient visits. RESULTS: Forty-four patients underwent laparoscopic fundoplication between January 2014 and June 2016. Twenty-six (59%) underwent conventional human-assisted fundoplication while 18 (41%) had FreeHand® robot assisted procedures. Mean operative time for conventional laparoscopic fundoplication was 165 min compared with 129 min in the robot-assisted group, saving 36 min (p < .001).The median length of stay was 1.5 days in the robot-assisted as compared to two days in the conventional group. Sixteen percent of robot-assisted as opposed to 30% of conventional group patients experienced complications. There was no 30-day mortality. Two patients required more than one post-operative clinic visit in robot-assisted against six in conventional group. CONCLUSION: Robot-assisted fundoplication is safe, feasible and reduces operative time. Furthermore, this negates need of assistant. Mean operative time for robot-assisted fundoplication was 36 min less than for conventional fundoplication. Advantages also include fewer adverse events, shorter length of stay and less post-operative clinic visits.


Asunto(s)
Reflujo Gastroesofágico , Laparoscopía , Robótica , Estudios de Casos y Controles , Fundoplicación , Reflujo Gastroesofágico/cirugía , Humanos , Resultado del Tratamiento
3.
Cell Physiol Biochem ; 55(6): 726-738, 2021 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-34816678

RESUMEN

Viruses have been widely used to treat cancer for many years and they achieved tremendous success in clinical trials with outstanding results, which has led to the foundation of companies that develop recombinant viruses for a better tumor treatment. Even though there has been a great progress in the field of viral tumor immunotherapy, until now only one virus, the oncolytic virus talimogene laherparepvec (TVEC), a genetically modified herpes simplex virus type 1 (T-VEC), has been approved by the FDA for cancer treatment. Although oncolytic viruses showed progress in certain cancer types and patient populations but they have yet shown limited efficacy when it comes to solid tumors. Only recently it was demonstrated that the immune stimulatory aspect of oncolytic viruses can strongly contribute to their anti-tumoral activity. One specific example in this context are arenaviruses, which have been shown to be non-cytopathic in nature lead to the massive immune activation within the tumor resulting in strong anti-tumoral activity. This strong immune activation might be also linked to their noncytopathic features, as their immune stimulatory potential is not self-limiting as is the case for oncolytic viruses due to their fast eradication by anti-viral immune effects. Because of this strong immune activation, arenaviruses appear superior to oncolytic viruses when it comes to potent and long-lasting anti-tumor effects in a broad variety of tumor types. Currently one of the most promising therapeutics which has turned to be very much beneficial for the treatment of different cancer types is represented by antibodies targeting checkpoint inhibitors such as PD-1/PD-L-1. In this review, we will summarize anti-tumoral effects of arenaviruses, and will discuss their potential to be combined with checkpoint inhibitors for a more efficient tumor treatment, which further emphasizes that arenavirus therapy as a viroimmunotherapy can be an efficient tool for the better clearance of tumors.


Asunto(s)
Arenavirus/inmunología , Inhibidores de Puntos de Control Inmunológico/uso terapéutico , Neoplasias , Viroterapia Oncolítica , Virus Oncolíticos/inmunología , Productos Biológicos/inmunología , Productos Biológicos/uso terapéutico , Herpesvirus Humano 1/inmunología , Humanos , Neoplasias/inmunología , Neoplasias/terapia
4.
Clin Endocrinol (Oxf) ; 93(5): 572-578, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32688436

RESUMEN

BACKGROUND: Saliva is an ideal medium in which to measure cortisol in children. However, there are very few data reporting salivary cortisol or cortisone concentrations in healthy children since the introduction of liquid chromatography-mass spectrometry (LC-MS/MS) to routine laboratory practice. DESIGN: Early morning serum cortisol, salivary cortisol and cortisone were measured on fasting samples, and salivary hormones were measured in samples collected every 2 hours during waking hours, and 30 minutes after waking the following morning. PARTICIPANTS: 43 healthy paediatric volunteers (19 female), median age 11.5 years, range 6.2-18.7, participated. RESULTS: Early morning serum cortisol (265 nmol/L, 156-516) correlated strongly with salivary cortisol (4.7 nmol/L, 1.1-14.6) and cortisone (28.8 nmol/L, 11.7-56.6), P < .0001 for both. Serum cortisol, salivary cortisol and salivary cortisone correlated directly with age (P < .0001, P = .002 and P = .015, respectively), and salivary cortisone/cortisol ratio correlated indirectly with age (P = .007). Between 08.00 and 21.00, area under the curve for salivary cortisol (mean ± 1 SD) was 41.8 ± 19.1 and for cortisone 213.0 ± 61.2. Salivary cortisol was undetectable in 25/130 (19%) of samples collected after 13.00, while cortisone was always detectable. DISCUSSION: Salivary cortisol and cortisone concentrations are strongly related to serum cortisol concentrations; however, cortisone may be a preferable measure as cortisol is often undetectable. Age may be an important factor in the interpretation of early morning cortisol measurements made in serum and saliva.


Asunto(s)
Cortisona , Adolescente , Índice de Masa Corporal , Niño , Cromatografía Liquida , Femenino , Humanos , Hidrocortisona , Saliva , Espectrometría de Masas en Tándem
5.
Lancet ; 392(10142): 145-159, 2018 07 14.
Artículo en Inglés | MEDLINE | ID: mdl-30025808

RESUMEN

BACKGROUND: More than 500 000 neonatal deaths per year result from possible serious bacterial infections (pSBIs), but the causes are largely unknown. We investigated the incidence of community-acquired infections caused by specific organisms among neonates in south Asia. METHODS: From 2011 to 2014, we identified babies through population-based pregnancy surveillance at five sites in Bangladesh, India, and Pakistan. Babies were visited at home by community health workers up to ten times from age 0 to 59 days. Illness meeting the WHO definition of pSBI and randomly selected healthy babies were referred to study physicians. The primary objective was to estimate proportions of specific infectious causes by blood culture and Custom TaqMan Array Cards molecular assay (Thermo Fisher, Bartlesville, OK, USA) of blood and respiratory samples. FINDINGS: 6022 pSBI episodes were identified among 63 114 babies (95·4 per 1000 livebirths). Causes were attributed in 28% of episodes (16% bacterial and 12% viral). Mean incidence of bacterial infections was 13·2 (95% credible interval [CrI] 11·2-15·6) per 1000 livebirths and of viral infections was 10·1 (9·4-11·6) per 1000 livebirths. The leading pathogen was respiratory syncytial virus (5·4, 95% CrI 4·8-6·3 episodes per 1000 livebirths), followed by Ureaplasma spp (2·4, 1·6-3·2 episodes per 1000 livebirths). Among babies who died, causes were attributed to 46% of pSBI episodes, among which 92% were bacterial. 85 (83%) of 102 blood culture isolates were susceptible to penicillin, ampicillin, gentamicin, or a combination of these drugs. INTERPRETATION: Non-attribution of a cause in a high proportion of patients suggests that a substantial proportion of pSBI episodes might not have been due to infection. The predominance of bacterial causes among babies who died, however, indicates that appropriate prevention measures and management could substantially affect neonatal mortality. Susceptibility of bacterial isolates to first-line antibiotics emphasises the need for prudent and limited use of newer-generation antibiotics. Furthermore, the predominance of atypical bacteria we found and high incidence of respiratory syncytial virus indicated that changes in management strategies for treatment and prevention are needed. Given the burden of disease, prevention of respiratory syncytial virus would have a notable effect on the overall health system and achievement of Sustainable Development Goal. FUNDING: Bill & Melinda Gates Foundation.


Asunto(s)
Infecciones Bacterianas/epidemiología , Infecciones Comunitarias Adquiridas/epidemiología , Países en Desarrollo , Virosis/epidemiología , Adolescente , Adulto , Infecciones Bacterianas/etiología , Infecciones Bacterianas/mortalidad , Bangladesh , Causalidad , Preescolar , Estudios de Cohortes , Infecciones Comunitarias Adquiridas/etiología , Infecciones Comunitarias Adquiridas/mortalidad , Femenino , Humanos , Incidencia , India , Lactante , Recién Nacido , Enfermedades del Prematuro/epidemiología , Enfermedades del Prematuro/etiología , Masculino , Persona de Mediana Edad , Pakistán , Vigilancia de la Población , Embarazo , Resultado del Embarazo/epidemiología , Factores de Riesgo , Virosis/etiología , Virosis/mortalidad , Adulto Joven
6.
IUBMB Life ; 69(7): 522-527, 2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-28474494

RESUMEN

Interleukin-10 (IL-10) is an anti inflammatory cytokine involved in the ongoing coronary inflammation and related patho-physiological processes. The piece of work presented herein is aimed at investigating possible association of polymorphisms in IL-10 promoter with Saudi cardiovascular disease (CVD) patients. The study included 80 confirmed CVD patients with diabetes and 75 healthy control individuals both men and women. Concentration of IL-10 in the serum samples were measured by ELISA method. For single nucleotide polymorphism (SNP) analysis, Sanger method of DNA sequencing was followed. The IL-10 level was found to be significantly elevated in CVD patients (P < 0.001) and its associated complications viz. ST-elevation myocardial infarction [STEMI] (P <0.01), non ST-elevation myocardial infarction [NSTEMI] (P < 0.05), and unstable angina [UA] (P < 0.001). We also observed a significant association between polymorphisms in IL-10 promoter at -1082 and -819 locus with Saudi CVD patients. Moreover, at -1082 A/G locus, AA haplotype was found to be less frequent in the CVD patients compared with control individuals. On the other hand, highly significant rise in heterozygous (A/G genotype) condition was observed in patient samples compared with control ones (P < 0.001). Similarly, the genotypic frequencies at -819 C/T locus were also found to be significantly associated (P < 0.001) with CVD patients compared with control individuals. Our study provides the status of polymorphism in IL-10 promoter and its association with CVD risk in Saudi population. As per our information, ours is the first article that shows the genetic diversity in IL-10 promoters and its level in the Saudi CVD patients. © 2017 IUBMB Life, 69(7):522-527, 2017.


Asunto(s)
Enfermedades Cardiovasculares/genética , Interleucina-10/genética , Polimorfismo de Nucleótido Simple , Regiones Promotoras Genéticas , Adulto , Árabes/genética , Estudios de Casos y Controles , Femenino , Frecuencia de los Genes , Predisposición Genética a la Enfermedad , Humanos , Interleucina-10/sangre , Masculino , Persona de Mediana Edad , Arabia Saudita
7.
Bull World Health Organ ; 94(10): 752-758B, 2016 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-27843165

RESUMEN

OBJECTIVE: To estimate neonatal mortality, particularly within 24 hours of birth, in six low- and lower-middle-income countries. METHODS: We analysed epidemiological data on a total of 149 570 live births collected between 2007 and 2013 in six prospective randomized trials and a cohort study from predominantly rural areas of Bangladesh, Ghana, India, Pakistan, the United Republic of Tanzania and Zambia. The neonatal mortality rate and mortality within 24 hours of birth were estimated for all countries and mortality within 6 hours was estimated for four countries with available data. The findings were compared with published model-based estimates of neonatal mortality. FINDINGS: Overall, the neonatal mortality rate observed at study sites in the six countries was 30.5 per 1000 live births (range: 13.6 in Zambia to 47.4 in Pakistan). Mortality within 24 hours was 14.1 per 1000 live births overall (range: 5.1 in Zambia to 20.1 in India) and 46.3% of all neonatal deaths occurred within 24 hours (range: 36.2% in Pakistan to 65.5% in the United Republic of Tanzania). Mortality in the first 6 hours was 8.3 per 1000 live births, i.e. 31.9% of neonatal mortality. CONCLUSION: Neonatal mortality within 24 hours of birth in predominantly rural areas of six low- and lower-middle-income countries was higher than model-based estimates for these countries. A little under half of all neonatal deaths occurred within 24 hours of birth and around one third occurred within 6 hours. Implementation of high-quality, effective obstetric and early newborn care should be a priority in these settings.


Asunto(s)
Países en Desarrollo , Mortalidad Infantil , Parto , Estudios de Cohortes , Bases de Datos Factuales , Estudios Epidemiológicos , Humanos , Lactante , Recién Nacido , Ensayos Clínicos Controlados Aleatorios como Asunto , Población Rural , Factores de Tiempo
9.
J Mater Sci Mater Med ; 25(2): 527-53, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24142121

RESUMEN

Oesophageal cancer is the ninth leading cause of malignant cancer death and its prognosis remains poor, ranking as the sixth most frequent cause of death in the world. This research work aims to adopt an Auxetic (rotating-squares) geometry device, that had previously been examined theoretically and analysed by Grima and Evans (J Mater Sci Lett 19(17):1563-1565, 2000), to produce a novel Auxetic oesophageal stent and stent-grafts relevant to the palliative treatment of oesophageal cancer and also for the prevention of dysphagia. This paper discusses the manufacture of a small diameter Auxetic oesophageal stent and stent-graft. The oral deployment of such an Auxetic stent would be simplest if a commercial balloon dilatational catheter was used as this obviates the need for an expensive dedicated delivery system. A novel manufacturing route was employed in this research to develop both Auxetic films and Auxetic oesophageal stents, which ranged from conventional subtractive techniques to a new additive manufacturing method. Polyurethane was selected as a material for the fabrication of Auxetic films and Auxetic oesophageal stents because of its good biocompatibility and non-toxicological properties. The Auxetic films were later used for the fabrication of seamed Auxetic oesophageal stents. The flexible polyurethane tubular grafts were also attached to the inner luminal side of the seamless Auxetic oesophageal stents, in order to prevent tumour in-growth. Scanning electron microscopy was used to conduct surface morphology study by using different Auxetic specimens developed from different conventional and new additive manufacturing techniques. Tensile testing of the Auxetic films was performed to characterise their mechanical properties. The stent expansion tests of the Auxetic stents were done to analyse the longitudinal extension and radial expansion of the Auxetic stent at a range of radial pressures applied by the balloon catheter, and to also identify the pressure values where the Auxetic stent fails. Finite element models of both Auxetic film and Auxetic stent were developed, and the results were compared with experimental results with a good agreement. The tensile testing of the Auxetic polyurethane films revealed that the Poisson's ratio of the sample ranged between -0.87 and -0.963 at different uniaxial tensile load values. From the stent expansion test, it was found that the Auxetic oesophageal stent radially expanded from 0.5 to 5.73 mm and longitudinally extended from 0.15 to 1.83 mm at a range of applied pressure increments (0.5-2.7 bar) from the balloon catheter.


Asunto(s)
Diseño de Equipo , Esófago , Stents , Carcinoma de Células Escamosas/cirugía , Neoplasias Esofágicas/cirugía , Humanos , Ensayo de Materiales , Microscopía Electrónica de Rastreo
10.
RSC Adv ; 14(29): 20691-20713, 2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38952927

RESUMEN

Endowing implanted biomaterials with better hemocompatibility, anticoagulation, antioxidant and antiplatelet adhesion is necessary because of their potential to trigger activation of multiple reactive mechanisms including coagulation cascade and potentially causing serious adverse clinical events like late thrombosis. Active ingredients from natural sources including Foeniculum vulgare, Angelica sinensis, and Cinnamomum verum have the ability to inhibit the coagulation cascade and thrombus formation around biomedical implants. These properties are of interest for the development of a novel drug for biomedical implants to potentially solve the current blood clotting and coagulation problems which lead to stent thrombosis. The objective of this study was to incorporate different anticoagulants from natural sources into a degradable matrix of chitosan with varying concentrations ranging from 5% to 15% and a composite containing all three drugs. The presence of anticoagulant constituents was identified using GC-MS. Subsequently, all the compositions were characterized principally by using Fourier transform infrared spectroscopy and scanning electron microscopy while the drug release profile was determined using UV-spectrometry for a 30 days immersion period. The results indicated an initial burst release which was subsequently followed by the sustained release pattern. Compared to heparin loaded chitosan, DPPH and hemolysis tests revealed better blood compatibility of natural drug loaded films. Moreover, the anticoagulation activity of natural drugs was equivalent to the heparin loaded film; however, through docking, the mechanism of inhibition of the coagulation cascade of the novel drug was found to be through blocking the extrinsic pathway. The study suggested that the proposed drug composite expresses an optimum composition which may be a practicable and appropriate candidate for biomedical implant coatings.

11.
Int J Biol Macromol ; : 133272, 2024 Jun 19.
Artículo en Inglés | MEDLINE | ID: mdl-38906352

RESUMEN

This study aims to investigate the effect of pulsed electric field (PEF) assisted OSA esterification treatment on the multi-scale structure and digestive properties of cassava starch and structure-digestion relationships. The degree of substitution (DS) of starch dually modified at 1.5-4.5 kV/cm was 37.6-55.3 % higher than that of starch modified by the conventional method. Compared with native starch, the resistant starch (RS) content of esterified starch treated with 3 kV/cm significantly increased by 17.13 %, whereas that of starch produced by the conventional method increased by only 5.91 %. Furthermore, assisted esterification at low electric fields (1.5-3 kV/cm) promotes ester carbonyl grafting on the surface of starch granules, increases steric hindrance and promotes the rearrangement of the amorphous regions of starch, which increases the density of the double-helical structure. These structural changes slow down starch digestion and increase the RS content. Therefore, this study presents a potential method for increasing the RS content of starch products using PEF to achieve the desired digestibility.

12.
JACC Case Rep ; 29(2): 102148, 2024 Jan 17.
Artículo en Inglés | MEDLINE | ID: mdl-38264303

RESUMEN

We report the case of a 50-year-old woman with secondary oxalosis following bowel resection resulting in restrictive cardiomyopathy and a diagnosis of cardiac amyloidosis based on the initial workup. The case documented findings by cardiac magnetic resonance imaging and technetium Tc 99m-labeled pyrophosphate scan in patients with cardiac oxalosis, which can mimic findings in cardiac amyloidosis, expanding the differential diagnosis.

13.
Res Vet Sci ; 167: 105121, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38150940

RESUMEN

The genus Neopsittaconirmus Conci, 1942 is a host-specific genus, found on both wild and captive parrots and love birds (order Psittaciformes). Two species of this genus: N. lybartota (Ansari, 1947) and N. chandabani (Ansari, 1947) have been previously reported from the Punjab province, Pakistan. We recorded N. lybartota from Psittacula eupatria nipalensis (n = 2), Psittacula krameri borealis (n = 13), and captive Psittacula krameri krameri (n = 4) with the mean intensity of 2.0 ± 1, 2.13 ± 0.35 and 2.25 ± 0.47, respectively; the prevalence of louse infestation was 62% in P. krameri borealis and 100% in P. krameri krameri and P. eupatria nipalensis. From this material, we redescribed its morphological variations in taxonomic features. Records on P. eupatria nipalensis and P. krameri krameri represent new host associations for this species of louse. We also present a new record of Neopsittaconirmus vendulae from a captive cockatiel, Nymphicus hollandicua (n = 3) in Pakistan, with mean intensity of 2.6 ± 0.66. Intraspecific variability of this species is described in detail, with special reference to the male and female terminalia, and male genitalia. We aimed to update and extend the fauna of chewing lice infesting birds of Pakistan. Previous records of Neopsittaconirmus on captive parrots around the world are summarized and discussed. Despite long-standing systematic veterinary care, some Neopsittaconirmus have cosmopolitan distribution and they are able to survive and successfully reproduce in captivity with their hosts, and even colonize novel hosts.


Asunto(s)
Enfermedades de las Aves , Cacatúas , Ischnocera , Infestaciones por Piojos , Loros , Psittacula , Animales , Masculino , Femenino , Pakistán/epidemiología , Infestaciones por Piojos/veterinaria , Enfermedades de las Aves/epidemiología
14.
Nat Commun ; 15(1): 993, 2024 Feb 02.
Artículo en Inglés | MEDLINE | ID: mdl-38307904

RESUMEN

The concept of precision cell therapy targeting tumor-specific mutations is appealing but requires surface-exposed neoepitopes, which is a rarity in cancer. B cell receptors (BCR) of mature lymphoid malignancies are exceptional in that they harbor tumor-specific-stereotyped sequences in the form of point mutations that drive self-engagement of the BCR and autologous signaling. Here, we use a BCR light chain neoepitope defined by a characteristic point mutation (IGLV3-21R110) for selective targeting of a poor-risk subset of chronic lymphocytic leukemia (CLL) with chimeric antigen receptor (CAR) T cells. We develop murine and humanized CAR constructs expressed in T cells from healthy donors and CLL patients that eradicate IGLV3-21R110 expressing cell lines and primary CLL cells, but neither cells expressing the non-pathogenic IGLV3-21G110 light chain nor polyclonal healthy B cells. In vivo experiments confirm epitope-selective cytolysis in xenograft models in female mice using engrafted IGLV3-21R110 expressing cell lines or primary CLL cells. We further demonstrate in two humanized mouse models lack of cytotoxicity towards human B cells. These data provide the basis for advanced approaches of resistance-preventive and biomarker-guided cellular targeting of functionally relevant lymphoma driver mutations sparing normal B cells.


Asunto(s)
Leucemia Linfocítica Crónica de Células B , Humanos , Femenino , Ratones , Animales , Leucemia Linfocítica Crónica de Células B/genética , Leucemia Linfocítica Crónica de Células B/terapia , Linfocitos B , Mutación , Receptores de Antígenos de Linfocitos B/genética , Linfocitos T
15.
J Biomater Appl ; 37(10): 1699-1715, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36977474

RESUMEN

Comparative investigations on environmentally triggered drug delivery and wound healing characteristics of flexible hydrogel composites, Chitosan-Gelatin (C/G) and 2-Hydroxyethyl Methacrylate-Gelatin (H/G); are presented here. These composites, prepared through facile synthesis and curing methods, indicate the potential to smartly respond to the pH changes in wounds by releasing drug simultaneously and aiding in faster healing. An in-vitro investigation of the composite characteristics were included testing for Equilibrium Water Capacity Studies, Fourier Transform Infrared Spectroscopy (FTIR) investigations as well as UV based drug release and gravimetric hydrogel degradation profiles. This was followed by cutaneous application testing of the hydrogel systems in balb-c mice. Observations and testing results indicated the potential applicability of the hydrogel systems as dressings for topical/transdermal applications, provided that further detailed in-vivo characteristics are accounted for.


Asunto(s)
Bacitracina , Quitosano , Animales , Ratones , Hidrogeles/química , Gelatina/química , Liberación de Fármacos , Quitosano/química , Concentración de Iones de Hidrógeno
16.
Cureus ; 15(9): e45341, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37720134

RESUMEN

Regular electrocardiogram (ECG) monitoring in patients with endocarditis of the aortic region is a simple yet effective approach to help evaluate for the development of aortic abscess. It is important to recognize this condition as it carries a high morbidity and mortality. We report a case of a 62-year-old Caucasian female diagnosed with methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia with mitral and aortic endocarditis. Progressive PR prolongation prompted re-evaluation, ultimately finding the progression of a new aortic abscess, changing the patient's care pathway. With a standardized approach of obtaining regular ECGs in patients with aortic endocarditis, it is possible to identify the progression of aortic valve endocarditis, thereby lowering the risk of morbidity and mortality.

17.
Ultrason Sonochem ; 94: 106303, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36731282

RESUMEN

Among different novel technologies, sonochemistry is a sustainable emerging technology for food processing, preservation, and pesticide removal. The study aimed to probe the impact of high-intensity ultrasonication on chlorothalonil fungicide degradation, reduction pathway, and bioactive availability of spinach juice. The chlorothalonil fungicide-immersed spinach juice was treated with sonication at 360 W, 480 W, and 600 W, 40 kHz, for 30 and 40 min at 30 ± 1 °C. The highest reduction of chlorothalonil fungicide residues was observed at 40 min sonication at 600 W. HPLC-MS (high-performance liquid chromatography-mass spectroscopy) analysis revealed the degradation pathway of chlorothalonil and the formation of m-phthalonitrile, 3-cyno-2,4,5,6-tetrachlorobenamide, 4-dichloroisophthalonitrile, trichloroisophtalonitrile, 4-hydoxychlorothalonil, and 2,3,4,6-tetrachlorochlorobenzonitrile as degradation products. High-intensity sonication treatments also significantly increased the bioavailability of phenolic, chlorophyll, and anthocyanins and the antioxidant activity of spinach juice. Our results proposed that sonication technology has excellent potential in degrading pesticides through free radical reactions formation and pyrolysis. Considering future perspectives, ultrasonication could be employed industrially to reduce pesticide residues from agricultural products and enhance the quality of spinach juice.


Asunto(s)
Fungicidas Industriales , Fungicidas Industriales/química , Spinacia oleracea , Antocianinas , Antioxidantes
18.
Ultrason Sonochem ; 94: 106313, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36739785

RESUMEN

Sonication is an emerging sustainable and eco-friendly technology that has been broadly explored in food processing and preservation. Sonication has the edges of low energy consumption and high efficiency than conventional decontamination methods and would not pass on secondary pollutants. In the current research, we analyzed the impact of sonication on anilazine fungicide reduction, bioactive compound, antioxidant activity, colloidal stability, and enzymatic and microbial load of tomato juice. Sonicated treatments were carried out at 40 kHz, 480 W, 30 ± 2 °C for 0, 8, 16, 24, 32, and 40 min in an ultrasonic bath cleaner. The GC-MS outcomes revealed that the anilazine maximum reduction in tomato juice attained 80.52 % at 40 min of sonication. The anilazine concentration reduced significantly (p ≤ 0.05) with increased sonication time. In contrast, sonication treatments have acquired the highest TFC, TPC, ascorbic acid, carotenoids, lycopene, ABTS, and ORAC assay than the untreated sample. The Sonication process significantly improved (p ≤ 0.05) colloidal stability by reducing particle size distribution, apparent viscosity, and sedimentation index. Sonication prolonged tomato juice's shelf life by reducing the total viable count from 6.31 to 1.91 log CFU/mL. Polygalacturonase and pectin methyl esterase of the sonication sample at 40 min were inactivated by 44.32 % and 64.2 %, respectively. Considering this issue from a future perspective, sonication processing can be used industrially to enhance fruit juice's nutritional properties and shelf life and reduce pesticides and other organic residues.


Asunto(s)
Fungicidas Industriales , Solanum lycopersicum , Jugos de Frutas y Vegetales , Sonicación/métodos , Antioxidantes/análisis , Manipulación de Alimentos/métodos
19.
Ultrason Sonochem ; 92: 106257, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36508892

RESUMEN

Sonication and dielectric barrier discharge (DBD) plasma are sustainable emerging food processing technologies. The study investigates the impact of sonication, DBD-plasma, and thermal treatment (TT) on wheat sprout juice. The obtained results indicated a significant (p < 0.05) increase in chlorophyll, total phenolics, flavonoids, DPPH assay, and ORAC assay after DBD-plasma (40 V) and sonication (30 mins) treatment as compared to TT and untreated samples. Both emerging technologies significantly (p < 0.05) reduce the polyphenol oxidase and peroxidase activities, but the TT sample had the highest reduction. Moreover, the synergistic application of both technologies significantly reduced the E. coli/Coliform, aerobics, yeast and mold up to the 2 log reduction, but the TT sample had a complete reduction. DBD-plasma and sonication processing significantly decreased (p < 0.05) the particle size, reducing apparent viscosity (η) and consistency index (K); while increasing the flow behavior (n), leading to higher stability of wheat sprout juice. To assess the impact of emerging techniques on nutrient concentration, we used surface-enhance Raman spectroscopy (SERS) as an emerging method. Silver-coated gold nano-substrates were used to compare the nutritional concentration of wheat sprout juice treated with sonication, DBD-plasma, and TT-treated samples. Results showed sharp peaks for samples treated with DBD-plasma followed by sonication, untreated, and TT. The obtained results, improved quality of wheat sprout juice, and lower microbial and enzymatic loads were confirmed, showing the suitability of these sustainable processing techniques for food processing and further research.


Asunto(s)
Escherichia coli , Triticum , Triticum/química , Sonicación , Manipulación de Alimentos/métodos , Antioxidantes
20.
Ultrason Sonochem ; 97: 106461, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37269690

RESUMEN

The purpose of this study was to examine plasma-activated buffer solution (PABS) and plasma-activated water (PAW) combined with ultrasonication (U) treatment on the reduction of chlorothalonil fungicide and the quality of tomato fruits during storage. To obtain PAW and PABS, an atmospheric air plasma jet was used to treat buffer solution and deionized water at different treatment times (5 and 10 min). For combined treatments, fruits were submerged in PAW and PABS, then sonicated for 15 min, and individual treatment without sonication. As per the results, the maximum chlorothalonil reduction of 89.29% was detected in PAW-U10, followed by 85.43% in PABS. At the end of the storage period, the maximum reduction of 97.25% was recorded in PAW-U10, followed by 93.14% in PABS-U10. PAW, PABS, and both combined with ultrasound did not significantly affect the overall tomato fruit quality in the storage period. Our results revealed that PAW combined with sonication had a significant impact on post-harvest agrochemical degradation and retention of tomato quality than PABS. Conclusively, the integrated hurdle technologies effectively reduce agrochemical residues, which helps to lower health hazards and foodborne illnesses.


Asunto(s)
Fungicidas Industriales , Solanum lycopersicum , Agua/química , Nitrilos
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