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1.
Bioinformation ; 20(7): 765-770, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39309562

RESUMEN

Amla, scientifically known as emblica officinalis and Acerola (malphigian emarginata) both are Vitamin C fruits possess varied medicinal properties being used for preventive disease health management strategies. Therefore, it is of interest to explore the antioxidant, anti-inflammatory, antibacterial, and cytotoxic properties of aqueous extracts from Acerola and Amla. Hence, the anti-inflammatory activity of Acerola and amla was assessed using the bovine serum albumin denaturation assay (BSA Assay), antioxidant properties were compared using DPPH (2,2-diphenyl-1-picrylhydrazyl) assay. Both extracts antibacterial activities were evaluated through the agar well diffusion technique against oral pathogens and Brine shrimp lethality assay for cytotoxicity. The current research sheds light on natural remedies for oxidative stress-related diseases, inflammatory conditions and bacterial infections, offering promising avenues for disease management and preventive healthcare strategies especially in the treatment of oral health diseases like periodontitis.

2.
Infect Dis (Lond) ; : 1-9, 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-39150281

RESUMEN

BACKGROUND: India relies primarily on direct smear microscopy for tuberculosis (TB) diagnosis. However, the low sensitivity of smear microscopy emphasizes the need to improve its performance. We recently described the development of 'TBDetect' kit which showed improved performance over direct smear microscopy at National Reference Laboratories (NRLs) in India. METHODS: The present study was aimed to assess the operational feasibility of 'TBDetect' microscopy in field settings. This was evaluated by (i) assessing the performance of 'TBDetect' microscopy vs. LED-fluorescence microscopy (LED-FM) on consecutive presumptive pulmonary TB patients (n = 5300) who attended Designated Microscopy Centres (DMCs, n = 13) under 4 NRLs at Bhubaneswar, Bhopal, Chennai, and New Delhi, and (ii) obtaining feedback from Scientists (n = 10) and laboratory technicians (n = 42) using semi-structured questionnaires under the following parameters: feasibility of initiation of 'TBDetect' microscopy in DMCs, sample preparation and testing, training, time-to-result, logistics, and troubleshooting. A scoring questionnaire was also used to assess 'TBDetect' microscopy vs. LED-FM and statistical significance of the scores was calculated using paired t-test. RESULTS: The overall positivity of 'TBDetect' microscopy was 10.32% (547/5300) vs. 8.96% (475/5300) of LED-FM at all sites and the increment in positivity was significant (p = 0.019). In addition, 'TBDetect' microscopy yielded an increment in smear grade status over LED-FM (p = 0.043). The feedback from the study-in-charge and kit users indicated that 'TBDetect' microscopy was easily adapted in point-of-care settings. An analysis of scoring feedback suggested that it was easy to perform and observe in comparison to LED-FM (p < 0.005). CONCLUSIONS: This study established the feasibility of 'TBDetect' microscopy in field settings.

3.
J Gastrointest Surg ; 2024 Aug 12.
Artículo en Inglés | MEDLINE | ID: mdl-39142436

RESUMEN

BACKGROUND: Insulin resistance (IR) is one of the independent determinants influencing the length of hospital stay (LOHS) and postoperative complications in colorectal procedures. Preoperative oral carbohydrate loading (OCL) has emerged as a prospective countermeasure for IR. This study aimed to investigate the effects of preoperative carbohydrate loading on postoperative IR, inflammatory parameters, and clinical outcomes in patients undergoing elective colorectal surgery. METHODS: This was an open-label, parallel arm, superiority randomized controlled trial conducted over 2 years. Participants were assigned to conventional fasting and oral OCL groups. IR, insulin sensitivity, Glasgow Prognostic Score (GPS), and interleukin 6 levels were analyzed on the day of surgery and on the first postoperative day (POD-1) and third POD (POD-3). Clinical parameters, such as thirst, hunger, dry mouth, anxiety, weakness, pain, nausea, and vomiting, were compared in the perioperative period. In addition, surgical clinical outcomes, such as intestinal recovery, time to independent ambulation, postoperative morbidity, and LOHS, were studied. RESULTS: A total of 72 participants were included, with 36 in each group. In the OCL group, there was a statistically significant decrease in postoperative IR on the day of surgery, POD-1, and POD-3 (P = .0336). Similarly, inflammatory parameters and the GPS were found to be significantly lower in the OCL group (P < .001). Clinical parameters, such as thirst, hunger, and dry mouth, were significantly lower in the intervention group (P =.00), with a shortened LOHS. CONCLUSION: This study demonstrated that preoperative carbohydrate loading is associated with reduced IR and inflammatory markers, shortened hospital stays, and improved overall clinical outcomes in elective colorectal surgery.

4.
ACS Omega ; 9(31): 33998-34007, 2024 Aug 06.
Artículo en Inglés | MEDLINE | ID: mdl-39130599

RESUMEN

In this study, we examine the electrochemical performance of supercapacitor (SC) electrodes made from 3D-printed nanocomposites. These composites consist of multiwalled carbon nanotubes (MWCNTs) and polyether ether ketone (PEEK), coated with poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The electrochemical performance of a 3D-printed PEEK/MWCNT solid electrode with a surface area density of 1.2 mm-1 is compared to two distinct periodically porous PEEK/MWCNT electrodes with surface area densities of 7.3 and 7.1 mm-1. To enhance SC performance, the 3D-printed electrodes are coated with a conductive polymer, PEDOT:PSS. The architected cellular electrodes exhibit significantly improved capacitive properties, with the cellular electrode (7.1 mm-1) displaying a capacitance nearly four times greater than that of the solid 3D-printed electrode-based SCs. Moreover, the PEDOT:PSS-coated cellular electrode (7.1 mm-1) demonstrates a high specific capacitance of 12.55 mF·cm-3 at 50 mV·s-1, contrasting to SCs based on 3D-printed cellular electrodes (4.09 mF·cm-3 at 50 mV·s-1) without the coating. The conductive PEDOT:PSS coating proves effective in reducing surface resistance, resulting in a decreased voltage drop during the SCs' charging and discharging processes. Ultimately, the 3D-printed cellular nanocomposite electrode with the conductive polymer coating achieves an energy density of 1.98 µW h·cm-3 at a current of 70 µA. This study underscores how the combined effect of the surface area density of porous electrodes enabled by 3D printing, along with the conductivity imparted by the polymer coating, synergistically improves the energy storage performance.

5.
Am J Transplant ; 2024 Jul 09.
Artículo en Inglés | MEDLINE | ID: mdl-38992497

RESUMEN

One of the concerns specific to minimally invasive donor hepatectomy (MIDH) is the prolonged time required for graft extraction after completion of the donor hepatectomy (donor warm ischemia time [DWIT]). There has never been an objective evaluation of minimally invasive donor hepatectomy-DWIT on allograft function in living donor liver transplantation. We evaluated the effect of DWIT following robotic donor hepatectomy (RDH) on recipient outcomes and compared them with a matched cohort of open donor hepatectomy (ODH). Demographic, perioperative, and recipient's postoperative outcome data for all right lobe (RL)-RDH performed between September 2019 and July 2023 were analyzed and compared with a propensity score matched cohort (1:1) of RL-ODH from the same time period. Of a total of 103 RL-RDH and 446 RL-ODH, unmatched and propensity score matched analysis (1:1) revealed a significantly longer DWIT in the RDH group as compared to the ODH group (9.33 ± 3.95 vs 2.87 ± 2.13, P < .0001). This did not translate into any difference in the rates of early allograft dysfunction (EAD), biliary complications, major morbidity, or overall 1-and 3-month survival. The receiver operating characteristic curve analysis threshold for DWIT-early allograft dysfunction was 9 minutes (area under receiver operating characteristic: 0.67, sensitivity = 80%, specificity = 53.8%). We show that prolonged DWIT within an acceptable range in RDH does not have deleterious effects on short-term recipient outcomes. Further long-term studies are required to confirm our findings, especially with regard to nonanastomotic biliary complications.

6.
ACS Appl Bio Mater ; 7(7): 4602-4610, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-38869946

RESUMEN

Biocompatible, industrially scalable, and opto/electrochemically active biomaterials are promising for biosensor platform design and application. Herein, cyclic oligosaccharide, ß-cyclodextrin (BCD), is conjugated with Butein, a chalcone-type polyphenol, via dehydration reaction of the hydroxyl groups of BCD and the benzoyl ring of Butein. Functional group changes in the conjugated BCD-Butein were comprehensively studied using UV-visible absorbance, Fourier transform-infrared, and X-ray photoelectron spectroscopic techniques. The electrochemical characteristics of BCD-Butein were explored using cyclic voltammetry, showing the reversible redox behavior (2e-/2H+) attributed to the catecholic OH group of Butein. The BCD-Butein-modified electrode exhibits a surface-confined redox process (R2 = 0.99, Ipa and Ipc) at the interface, suitable for external mediatorless sensor studies. An enzymatic biomolecular sensor has been constructed using BCD-Butein-modified glassy carbon and a screen-printed electrode targeting sialic acid as the model clinical biomarker. With the enzyme sialic acid aldolase, BCD-Butein-modified substrate exhibited a selective conversion of sialic acid to N-acetyl-d-mannosamine and pyruvate, with a wide linear detection range (1-100 nM), the lowest detection limit of 0.2 nM, and a quantification limit of 0.69 nM, convenient for clinical threshold diagnosis.


Asunto(s)
Materiales Biocompatibles , Técnicas Electroquímicas , Ensayo de Materiales , Ácido N-Acetilneuramínico , Oxidación-Reducción , beta-Ciclodextrinas , beta-Ciclodextrinas/química , Materiales Biocompatibles/química , Ácido N-Acetilneuramínico/química , Ácido N-Acetilneuramínico/análisis , Tamaño de la Partícula , Técnicas Biosensibles , Chalconas/química , Estructura Molecular
7.
Analyst ; 149(13): 3555-3563, 2024 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-38780058

RESUMEN

The fabrication of an all-in-one solid-state ECL sensing platform is beneficial not only for expediting the miniaturization of sensing devices, but also, more importantly, for enabling point-of-care applications. In the present work, a self-enhanced solid-state ECL sensing platform is fabricated using newly synthesised silica polyethylene nanoparticles (SiO2-PEI NPs) which generate a co-reactant in situ and easily self-assemble with Ru(bpy)32+ and shows selective and sensitive detection of spermine at physiological pH (7.4). Spermine induces the maximum ECL emission intensity compared to other biogenic amines due to the presence of two secondary amines. A possible ECL reaction mechanism has been proposed based on CV and ECL experiments, DFT calculations, and in situ ECL spectrum analysis. The developed solid-state sensor showed a linear increase in ECL intensity with increasing spermine concentration in the range of 10 nM to 100 nM with an LOD of 12.2 nM. Compared to other biogenic amines in previous works, chemically synthesised SiO2-PEI NPs used in the present study act as an effective label- and enzyme-free sensor, and the new method is observed to be simple and cost-effective, to overcome various limitations of solution-phase ECL and to avoid the usage of any noble metals.

8.
J Anim Sci Biotechnol ; 15(1): 59, 2024 Apr 10.
Artículo en Inglés | MEDLINE | ID: mdl-38594781

RESUMEN

BACKGROUND: Optimal gut health is important to maximize growth performance and feed efficiency in broiler chickens. A total of 1,365 one-day-old male Ross 308 broiler chickens were randomly divided into 5 treatments groups with 21 replicates, 13 birds per replicate. The present research investigated effects of microbial muramidase or a precision glycan alone or in combination on growth performance, apparent total tract digestibility, total blood carotenoid content, intestinal villus length, meat quality and gut microbiota in broiler chickens. Treatments included: NC: negative control (basal diet group); PC: positive control (basal diet + 0.02% probiotics); MR: basal diet + 0.035% microbial muramidase; PG: basal diet + 0.1% precision glycan; and MRPG: basal diet + 0.025% MR + 0.1% PG, respectively. RESULTS: MRPG group increased the body weight gain and feed intake (P < 0.05) compared with NC group. Moreover, it significantly increased total serum carotenoid (P < 0.05) and MRPG altered the microbial diversity in ileum contents. The MRPG treatment group increased the abundance of the phylum Firmicutes, and family Lachnospiraceae, Ruminococcaceae, Oscillospiraceae, Lactobacillaceae, Peptostreptococcaceae and decreased the abundance of the phylum Campilobacterota, Bacteroidota and family Bacteroidaceae. Compared with the NC group, the chickens fed MRPG showed significantly increased in duodenum villus length at end the trial. CONCLUSION: In this study, overall results showed that the synergetic effects of MR and PG showed enhancing growth performance, total serum carotenoid level and altering gut microbiota composition of broilers. The current research indicates that co-supplementation of MR and PG in broiler diets enhances intestinal health, consequently leading to an increased broiler production.

9.
ACS Appl Mater Interfaces ; 16(14): 17219-17231, 2024 Apr 10.
Artículo en Inglés | MEDLINE | ID: mdl-38561895

RESUMEN

Herein, we demonstrate the detection of glucose in a noninvasive and nonenzymatic manner by utilizing an extended gate field-effect transistor (EGFET) based on the organic molecule pyrene phosphonic acid (PyP4OH8) incorporated nickel metal-organic framework (NiOM-MOF). The prepared electrode responds selectively to glucose instead of sucrose, fructose, maltose, ascorbic acid, and uric acid in a 1× phosphate buffer saline solution. Also, utilizing the scanning Kelvin probe system, the sensing electrode's work function (Φ) is measured to validate the glucose-sensing mechanism. The sensitivity, detection range, response time, limit of detection, and limit of quantification of the electrode are determined to be 24.5 µA mM-1 cm-2, 20 µM to 10 mM, less than 5 s, 2.73 µM, and 8.27 µM, respectively. Most interestingly, the developed electrode follows the Michaelis-Menten kinetics, and the calculated rate constant (km) 0.07 mM indicates a higher affinity of NiOM-MOF toward glucose. The real-time analysis has revealed that the prepared electrode is sensitive to detect glucose in real human saliva, and it can be an alternative device for the noninvasive detection of glucose. Overall, the outcomes of the EGFET studies demonstrate that the prepared electrodes are well-suited for expeditious detection of glucose levels in saliva.


Asunto(s)
Diabetes Mellitus , Estructuras Metalorgánicas , Humanos , Glucosa/análisis , Electrodos , Pirenos
10.
Environ Geochem Health ; 46(3): 102, 2024 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-38433158

RESUMEN

Explosives are perilous and noxious to aquatic biota disrupting their endocrinal systems. Supplementarily, they exhibit carcinogenic, teratogenic and mutagenic effects on humans and animals. Henceforth, the current study has been targeted to biotransform the explosive, 2, 4, 6 trinitrophenol (TNP) by wetland peroxidase from Streptomyces coelicolor. A total peroxidase yield of 20,779 mg/l with 51.6 folds of purification was observed. In silico molecular docking cum in vitro appraisals were accomplished to assess binding energy and interacting binding site residues of peroxidase and TNP complex. TNP required a minimal binding energy of-6.91 kJ/mol and was subjected to biodeterioration (89.73%) by peroxidase in purified form, with 45 kDa and a similarity score of 34 by MASCOT protein analysis. Moreover, the peroxidase activity was confirmed with Zymogram analysis. Characterization of peroxidase revealed that optimum values of pH and temperature as 6 and 40 °C, respectively, with their corresponding stability varying from 3.5 to 7. Interestingly, the kinetic parameters such as Km and Vmax on 2,2'-azino-bis 3-ethylbenzothiazoline-6-sulfonic acid (ABTS) and H2O2 were 19.27 µm and 0.41 µm/min; 21.4 µm and 0.1 µm/min, respectively. Among the diverse substrates, chemicals and trace elements, ABTS (40 mM), citric acid (5 mM) and Fe2+ (5 mM) displayed the highest peroxidase activity. Computational docking and in vitro results were corroborative and UV-Vis spectroscopy, HPLC, FTIR and GC-MS indicated the presence of simple metabolites of TNP such as nitrophenols and benzoquinone, showcasing the efficacy of S. coelicolor peroxidase to biotransform TNP. Henceforth, the current study offers a promising channel for biological treatment of explosive munitions, establishing a sustainable green earth.


Asunto(s)
Benzotiazoles , Peróxido de Hidrógeno , Peroxidasa , Picratos , Ácidos Sulfónicos , Animales , Humanos , Simulación del Acoplamiento Molecular , Peroxidasas , Colorantes
11.
Plants (Basel) ; 13(4)2024 Feb 06.
Artículo en Inglés | MEDLINE | ID: mdl-38498452

RESUMEN

In this study, an extensive exploration survey of wild progeny was conducted which yielded 18 candidate plus trees (CPTs) of Terminalia bellerica. Seeds of these CPTs were collected from diverse locations between 10°54' and 28°07' E longitude, and 76°27' and 95°32' N latitude, covering 18 different locations across 5 states of the Indian subcontinent. The objective of the progeny trial was to assess genetic associations and variability in growth and physio-chemical characteristics. Significant variations (p < 0.05) were observed among the growth traits, encompassing plant height, basal diameter, girth at breast height and volume, as well as physio-chemical characteristics such as leaf length, width, area and chlorophyll content, carotenoids, and protein in the progeny trial. Broad-sense heritability (h2b) estimates were consistently high, exceeding 80% for all growth and physiological related traits under investigation except for plant height, leaf length, and girth at breast height. A correlation study revealed that selecting based on plant height, leaf area, and girth at breast height effectively enhances T. bellerica volume. A moderate genetic advance in percent of the mean (GAM) was observed for most traits, except leaf length, leaf width, girth at breast height, and plant height. Across all 13 traits, phenotypic coefficient of variation (PCV) surpassed genotypic coefficient of variation (GCV). Utilizing principal component analysis (PCA) and dendrogram construction categorized the genotypes into seven distinct groups. In conclusion, the study has demonstrated that targeting girth at breast height and plant height would be a highly effective strategy for the establishment of elite seedling nurseries and clonal seed nurseries for varietal and hybridization programs in the future.

12.
Nat Commun ; 15(1): 452, 2024 Jan 11.
Artículo en Inglés | MEDLINE | ID: mdl-38199999

RESUMEN

Temperature sensors are one of the most fundamental sensors and are found in industrial, environmental, and biomedical applications. The traditional approach of reading the resistive response of Positive Temperature Coefficient thermistors at DC hindered their adoption as wide-range temperature sensors. Here, we present a large-area thermistor, based on a flexible and stretchable short carbon fibre incorporated Polydimethylsiloxane composite, enabled by a radio frequency sensing interface. The radio frequency readout overcomes the decades-old sensing range limit of thermistors. The composite exhibits a resistance sensitivity over 1000 °C-1, while maintaining stability against bending (20,000 cycles) and stretching (1000 cycles). Leveraging its large-area processing, the anisotropic composite is used as a substrate for sub-6 GHz radio frequency components, where the thermistor-based microwave resonators achieve a wide temperature sensing range (30 to 205 °C) compared to reported flexible temperature sensors, and high sensitivity (3.2 MHz/°C) compared to radio frequency temperature sensors. Wireless sensing is demonstrated using a microstrip patch antenna based on a thermistor substrate, and a battery-less radio frequency identification tag. This radio frequency-based sensor readout technique could enable functional materials to be directly integrated in wireless sensing applications.

13.
Crit Rev Biotechnol ; 44(2): 236-254, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36642423

RESUMEN

Nowadays, rapidly increasing production, use and disposable of plastic products has become one of the utmost environmental issues. Our current circumstances in which the food supply chain is demonstrated as containing plastic particles and other plastic-based impurities, represents a significant health risk to humans, animals, and environmental alike. According to this point of view, biodegradable plastic material aims to produce a more sustainable and greener world with a lower ecological impact. Bioplastics are being investigated as an environmentally friendly candidate to address this problem and hence global bioplastic production has seen significant growth and expansion in recent years. This article focuses on a few critical issues that must be addressed for bioplastic production to become commercially viable. Although the reduction of fruit and vegetable waste biomass has an apparent value in terms of environmental benefits and sustainability, commercial success at industrial scale has remained flat. This is due to various factors, including biomass feedstocks, pretreatment technologies, enzymatic hydrolysis, and scale-up issues in the industry, all of which contribute to high capital and operating costs. This review paper summarizes the global overview of bioplastics derived from fruit and vegetable waste biomass. Furthermore, economic and technical challenges associated with industrialization and diverse applications of bioplastics in biomedical, agricultural, and food-packaging fields due to their excellent biocompatibility properties are reviewed.HighlightsReview of the diverse types and characteristics of sustainability of biobased plasticsImproved pretreatment technologies can develop to enhance greater yieldEnzyme hydrolysis process used for bioplastic extraction & hasten industrial scale-upFocus on technical challenges facing commercialized the bioplasticsDetailed discussion on the application for sustainability of biodegradable plastics.


Asunto(s)
Frutas , Verduras , Animales , Humanos , Plásticos , Biopolímeros
14.
J Colloid Interface Sci ; 656: 424-439, 2024 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-38000254

RESUMEN

Manipulating metal valence states and porosity in the metal-organic framework (MOF) by alloying has been a unique tool for creating high-valent metal sites and pore environments in a structure that are inaccessible by other methods, favorable for accelerating the catalytic activity towards sensing applications. Herein, we report Fe3+-driven formation of catalytic active Ni3+ species in the amine-crafted benzene-dicarboxylate (BDC-NH2)-based MOF as a high-performance electrocatalyst for glucose sensing. This work took the benefit of different bonding stability between BDC-NH2 ligand, and Fe3+ and Ni2+ metal precursor ions in the heterometallic NixFe(1-x)-BDC-NH2 MOF. The FeCl3 that interacts weakly with ligand, oxidizes the Ni2+ precursor to Ni3+-based MOF owing to its Lewis acidic behavior and was subsequently removed from the structure supported by Ni atoms, during solvothermal synthesis. This enables to create mesopores within a highly stable Ni-MOF structure with optimal feed composition of Ni0.7Fe0.3-BDC-NH2. The Ni3+-based Ni0.7Fe0.3-BDC-NH2 demonstrates superior catalytic properties towards glucose sensing with a high sensitivity of 13,435 µA mM-1 cm-2 compared to the parent Ni2+-based Ni-BDC-NH2 (10897 µA mM-1cm-2), along with low detection limit (0.9 µM), short response time (≤5 s), excellent selectivity, and higher stability. This presented approach for fabricating high-valent nickel species, with a controlled quantity of Fe3+ integrated into the structure allowing pore engineering of MOFs, opens new avenues for designing high-performing MOF catalysts with porous framework for sensing applications.

15.
EXCLI J ; 22: 1077-1091, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38054206

RESUMEN

Leber's hereditary optic neuropathy (LHON) is a mitochondrial complex I disorder and causes inexorable painless vision loss. Recent studies from India reported that a significant proportion of LHON patients lack primary mitochondrial DNA mutations, suggesting that alternative genetic factors contribute to disease development. Therefore, this study investigated the genetic profile of LHON-affected individuals in order to understand the role of mito-nuclear genetic factors in LHON. A total of thirty probands displaying symptoms consistent with LHON have undergone whole mitochondrial and whole exome sequencing. Interestingly, whole mtDNA sequencing revealed primary mtDNA mutations in 30 % of the probands (n=9), secondary mtDNA mutations in 40 % of the probands (n=12) and no mitochondrial changes in 30 % of individuals (n=9). Further, WES analysis determined pathogenic mutations in 11 different nuclear genes, especially in cases with secondary mtDNA mutations (n=6) or no mtDNA mutations (n=6). These findings provide valuable insight into LHON genetic predisposition, particularly in cases lacking primary mtDNA mutations. See also Figure 1(Fig. 1).

16.
Anal Bioanal Chem ; 415(24): 5875-5898, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37507465

RESUMEN

In recent years, electrochemiluminescence (ECL) has received enormous attention and has emerged as one of the most successful tools in the field of analytical science. Compared with homogeneous ECL, the heterogeneous (or solid-state) ECL has enhanced the rate of the electron transfer kinetics and offers rapid response time, which is highly beneficial in point-of-care and clinical applications. In ECL, the luminophore is the key element, which dictates the overall performance of the ECL-based sensors in various analytical applications. Tris(2,2'-bipyridyl)ruthenium (II) complex, Ru(bpy)32+, is a coordination compound, which is the gold-standard luminophore in ECL. It has played a key role in translating ECL from a "laboratory curiosity" to a commercial analytical instrument for diagnosis. The aim of the present review is to provide the principles of ECL and classical reaction mechanisms-particularly involving the heterogeneous Ru(bpy)32+/co-reactant ECL systems, as well as the fabrication methods and its importance over solution-phase Ru(bpy)32+ ECL. Then, we discussed the emerging technology in solid-state Ru(bpy)32+ ECL-sensing platforms and their recent potential analytical applications such as in immunoassay sensors, DNA sensors, aptasensors, bio-imaging, latent fingerprint detection, point-of-care testing, and detection of non-biomolecules. Finally, we also briefly cover the recent advances in solid-state Ru(bpy)32+ ECL coupled with the hyphenated techniques.

17.
J Anim Sci Technol ; 65(3): 562-578, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-37332279

RESUMEN

The aim of the present study was to evaluate the effects of dietary supplementation of Ca-Mg complex on the longevity and reproductive performance of sows. In total, seventy-two gilts ([Yorkshire × Landrace] × Duroc, average body weight 181 kg) were randomly allocated to 1 of 3 treatments during 4 successive parity in a 4 × 3 factorial arrangement. Treatments consisted of CON (basal diet), CM1 (basal diet -MgO - 0.3% limestone + 0.4% Ca-Mg complex), and CM2 (basal diet - MgO - 0.7% limestone + 0.4% Ca-Mg complex). A higher (p < 0.05) number of totals born and live piglets, and sows increased feed intake during gestation and lactation, increased backfat thickness, and increased estrus interval were observed (p < 0.05) during their third and fourth parity than during their first and second parity. Ca-Mg complex supplementation improved (p < 0.05) the number of total piglets during the first and second parity as well as live-born piglets during the first to third parity, reduction (p < 0.05) in backfat thickness during the third and fourth parity, a higher (p < 0.05) initial and final number of suckling piglets as well as higher weaning weight compared with sows fed CON diet during the first, second, and third parity. The average daily gain (ADG) was higher (p < 0.05) in piglets born to CM1 and CM2 sows regardless of parity. The treatment diets fed to sows lowered (p < 0.05) the duration of first to last piglet birth and placenta expulsion time compared with CON sows. A significant interactive effect (p = 0.042) between parities and treatment diets was observed for the first to last piglet birth. Thus, Ca-Mg complex supplementation by partially replacing limestone in the basal diet enhanced sow performance, specifically during their third and fourth parity, thereby improving sow longevity.

18.
Chem Commun (Camb) ; 59(33): 4982, 2023 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-37042754

RESUMEN

Correction for 'Study of highly stable electrochemiluminescence from [Ru(bpy)3]2+/dicyclohexylamine and its application in visualizing sebaceous fingerprint' by Mathavan Sornambigai et al., Chem. Commun., 2022, 58, 7305-7308, https://doi.org/10.1039/D2CC01929A.

19.
Chem Commun (Camb) ; 58(52): 7305-7308, 2022 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-35678540

RESUMEN

For the first time, we report a novel and highly stable visual electrochemiluminescence emission from the [Ru(bpy)3]2+/dicyclohexylamine system at physiological pH conditions, with a quantum efficiency (ΦECL) of 95.5%. Furthermore, we have successfully demonstrated the simple and rapid smartphone-based ECL mapping of sebaceous fingerprints via a non-destructive mode.


Asunto(s)
Mediciones Luminiscentes , Ciclohexilaminas
20.
Anal Chim Acta ; 1206: 339736, 2022 May 08.
Artículo en Inglés | MEDLINE | ID: mdl-35473865

RESUMEN

An electrodeposited gold@poly-luminol nanocomposite on glassy carbon electrode (Au@PL-NC/GCE) has been developed and demonstrated as solid-state electrochemiluminescence (ECL) immunosensor platform for prostate specific antigen (PSA) sensing. In-situ electro-generated reactive oxygen species (ROS) from oxygen reduction reaction in oxygen saturated PBS (pH 7.4) acts as sole co-reactant augmenting the signal transduction. Protein-G bio-affinity layer interfaced with Au@PL-NC/GCE (Protein-G/Au@PL-NC/GCE) to support the effective localization of Fc region of the monoclonal antibodies of PSA (mAb-PSA). As-developed ECL probe exhibit selective recognition of target analyte, PSA, enabling wide linearity of 1 fg mL-1 to 10 µg mL-1 with a calculated limit of detection (LOD) and limit of quantification (LOQ) of 0.45 fg mL-1 and 1.37 fg mL-1, respectively. The selectivity and specificity of the ECL probe was tested using human serum albumin, immunoglobulin G and mixtures of the same with target analyte. Fabricated ECL probe not only exhibit high sensitivity and specificity against commercial PSA samples but also enable clinical detection in real human serum and urine samples with acceptable recovery range from 97% to 103%. Our results suggest that the fabricated reagent-less solid-state ECL platform holds promising application in the field of prostate oncological screening and its point-of-care applications.


Asunto(s)
Técnicas Biosensibles , Nanocompuestos , Técnicas Biosensibles/métodos , Oro , Humanos , Inmunoensayo/métodos , Mediciones Luminiscentes/métodos , Masculino , Oxígeno , Antígeno Prostático Específico
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