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1.
Brief Bioinform ; 25(3)2024 Mar 27.
Artículo en Inglés | MEDLINE | ID: mdl-38701422

RESUMEN

In this review article, we explore the transformative impact of deep learning (DL) on structural bioinformatics, emphasizing its pivotal role in a scientific revolution driven by extensive data, accessible toolkits and robust computing resources. As big data continue to advance, DL is poised to become an integral component in healthcare and biology, revolutionizing analytical processes. Our comprehensive review provides detailed insights into DL, featuring specific demonstrations of its notable applications in bioinformatics. We address challenges tailored for DL, spotlight recent successes in structural bioinformatics and present a clear exposition of DL-from basic shallow neural networks to advanced models such as convolution, recurrent, artificial and transformer neural networks. This paper discusses the emerging use of DL for understanding biomolecular structures, anticipating ongoing developments and applications in the realm of structural bioinformatics.


Asunto(s)
Biología Computacional , Aprendizaje Profundo , Biología Computacional/métodos , Redes Neurales de la Computación , Humanos
2.
Nucleic Acids Res ; 52(3): 1450-1470, 2024 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-38153196

RESUMEN

The regulator of telomere elongation helicase 1 (RTEL1) plays roles in telomere DNA maintenance, DNA repair, and genome stability by dismantling D-loops and unwinding G-quadruplex structures. RTEL1 comprises a helicase domain, two tandem harmonin homology domains 1&2 (HHD1 and HHD2), and a Zn2+-binding RING domain. In vitro D-loop disassembly by RTEL1 is enhanced in the presence of replication protein A (RPA). However, the mechanism of RTEL1 recruitment at non-telomeric D-loops remains unknown. In this study, we have unravelled a direct physical interaction between RTEL1 and RPA. Under DNA damage conditions, we showed that RTEL1 and RPA colocalise in the cell. Coimmunoprecipitation showed that RTEL1 and RPA interact, and the deletion of HHDs of RTEL1 significantly reduced this interaction. NMR chemical shift perturbations (CSPs) showed that RPA uses its 32C domain to interact with the HHD2 of RTEL1. Interestingly, HHD2 also interacted with DNA in the in vitro experiments. HHD2 structure was determined using X-ray crystallography, and NMR CSPs mapping revealed that both RPA 32C and DNA competitively bind to HHD2 on an overlapping surface. These results establish novel roles of accessory HHDs in RTEL1's functions and provide mechanistic insights into the RPA-mediated recruitment of RTEL1 to DNA repair sites.


Asunto(s)
ADN Helicasas , Proteína de Replicación A , Telómero , ADN/genética , Reparación del ADN , Replicación del ADN , Proteína de Replicación A/metabolismo , Telómero/metabolismo , Humanos , ADN Helicasas/química , ADN Helicasas/metabolismo
3.
Trop Anim Health Prod ; 56(3): 113, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38557923

RESUMEN

The study explores the relationship between flumethrin resistance and Anaplasma marginale infection in Rhipicephalus (Boophilus) microplus of cattle in South Gujarat, India. Adult Immersion Test (AIT) was used to assess flumethrin resistance and polymerase chain reaction (PCR) to confirm A. marginale infection. Species-specific PCR resulted in the amplification of 576 bp of msp5 gene of A. marginale in 17.69% (49/277) groups of ticks, and subsequent digestion with EcoRI cleaved it into two distinct segments. Navsari district, noted level Ι resistance [resistance factors (RF) = 1.78-3.34], and A. marginale prevalence was 16.67, 15.38, 23.08, 15.38, and 11.76% in Navsari, Jalalpore, Gandevi, Chikhli, and Vansda sub-districts, respectively. Similarly, Vyara and Dolvan sub-districts of Tapi observed level Ι resistance (RF = 1-3.63), with A. marginale positivity of 21.43 and 22.22%, while Valod and Songhad demonstrated susceptibility, with 14.29 and 12.50% of A. marginale, respectively. Moving to Surat, the Mahuva, Bardoli, Mandvi, Palsana, and Kamrej sub-districts observed the level Ι resistance (RF = 1.94-2.89), coupled with 14.29, 17.65, 20, 20, and 21.43% of A. marginale, respectively. Lastly, in Valsad district, Dharampur, Kaparada, Valsad, and Umbergaon noted level Ι resistance (RF = 1.67-1.81), and corresponding A. marginale positivity rates of 18.18, 19.23, 15.00, and 20.00%. The scatter plot unveiled a significant moderate positive correlation between RF and A. marginale positivity% (p = 0.0362), characterized by a Pearson correlation coefficient (r) of 0.4963. The covariance (1.1814) highlighted fluctuations, while the coefficient of determination (r2) (0.2463) clarified that 24.63% of the variability in A. marginale positivity% could be attributed to the RF.


Asunto(s)
Anaplasma marginale , Anaplasmosis , Enfermedades de los Bovinos , Piretrinas , Rhipicephalus , Bovinos , Animales , Anaplasma marginale/genética , Enfermedades de los Bovinos/epidemiología , Anaplasmosis/epidemiología , Anaplasma
4.
Semin Cancer Biol ; 86(Pt 3): 513-531, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35150864

RESUMEN

Small secretory proteins of immune cells are mostly Cytokines, which include chemokines, interleukins, interferons, lymphokines and tumor necrosis factors but not hormones or growth factors. These secretory proteins are the molecular messengers and primarily involved in autocrine, paracrine and endocrine signaling as immunomodulating agents. Hence, these proteins actually regulate the cells of immune system to communicate with one another to produce a synchronized, robust, still self-regulated response to a specific antigen. Chemokines are smaller secreted proteins that control overall immune cell movement and location; these chemokines are divided into 4 subgroups, namely, CXC, CC, CX3C and C according to the position of 4 conserved cysteine residues. Complete characterization of cytokines and chemokines can exploit their vast signaling networks to develop cancer treatments. These secretory proteins like IL-6, IL-10, IL-12, TNFα, CCL2, CXCL4 & CXCL8 are predominantly expressed in most of the gynecological cancers, which directly stimulate immune effector cells and stromal cells at the tumor site and augment tumor cell recognition by cytotoxic T-cells. Hence; these secretory proteins are the major regulators, which can actually modulate all kinds of gynecological cancers. Furthermore, advancements in adoptive T-cell treatment have relied on the use of multiple cytokines/chemokines to establish a highly regulated environment for anti-tumor T cell growth. A number of in vitro studies as well as animal models and clinical subjects have also shown that cytokines/chemokines have broad antitumor activity, which has been translated into a number of cancer therapy approaches. This review will focus on the foremost cytokines & chemokines involved in the majority of the gynecological malignancies and discuss their basic biology as well as clinical applications.


Asunto(s)
Quimiocinas , Neoplasias , Animales , Humanos , Quimiocinas/metabolismo , Quimiocinas/uso terapéutico , Citocinas/metabolismo , Neoplasias/etiología , Neoplasias/tratamiento farmacológico , Comunicación Celular , Interleucinas
5.
Phys Chem Chem Phys ; 25(39): 26820-26832, 2023 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-37782114

RESUMEN

A simple analytical expression is obtained relating the radius of the core, the thickness of the shell of nanoparticles, and the intensities of X-ray photoelectron lines from the core and shell, recorded during one experiment. The effective evaluation of the proposed equation was verified by comparison with the results of calculations of the parameters of core-shell nanoparticles (NPs) using known methods, as well as by comparing the results of ratios between the radius and thickness of the shell of specific NPs and their evaluations using the transmission electron microscopy method. The formula proposed in this work also allows using EDS data to estimate the core-shell parameters of nanoparticles. It is shown that the equation obtained in this work is not inferior to the solutions of the already existing approximate equations in terms of the accuracy of the determined parameters, but it is more convenient to use, since the data of one experiment are sufficient for its application. A simple approach to determine the thickness of a shell of NPs based on information about the elemental composition of the core-shell of NPs measured by X-ray photoelectron spectroscopy is developed.

6.
Phys Chem Chem Phys ; 25(4): 3545-3546, 2023 Jan 27.
Artículo en Inglés | MEDLINE | ID: mdl-36636939

RESUMEN

Correction for 'Depth-resolved oxidational studies of Be/Al periodic multilayers investigated by X-ray photoelectron spectroscopy' by Niranjan Kumar et al., Phys. Chem. Chem. Phys., 2023, 25, 1205-1213, https://doi.org/10.1039/D2CP04778K.

7.
Phys Chem Chem Phys ; 25(2): 1205-1213, 2023 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-36519592

RESUMEN

The quantification of surface and subsurface oxidation of Be/Al periodic multilayer mirrors due to exposure in the ambient atmosphere was investigated by depth-resolved X-ray photoelectron spectroscopy. The contribution of oxidation was lower for the thicker layer of Al in the periodic structures since the surface was less chemically reactive for the oxidation. This was investigated by finding the depth-resolved slope of the intensity ratio of metal/oxides (Be/BeOx and Al/AlOx) by analyzing the chemical shift of Al 1s and Be 1s photoelectrons. Furthermore, a well-resolved doublet chemical shift in the O 1s spectra indicated the formation of BeOx/AlOx and BeOH/AlOH oxides. The investigation showed that the subsurface and surface regions were dominated by metal-hydroxide (BeOH/AlOH) and metal-oxide (BeOx/AlOx) bonding, respectively, analyzed by the depth-resolved chemical shifts.

8.
J Craniofac Surg ; 34(3): e206-e208, 2023 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-35984047

RESUMEN

Differential superior reposition of maxilla following LeFort I osteotomy in the correction of maxillary cant poses a greater challenge especially when associated with the pathology like fibrous dysplasia which completely obliterates the antrum. Purpose of this paper is to highlight the modification of LeFort I osteotomy and hypothesis is to assess its difficulty index in modifying the standard steps, in executing the maxillary separation at various to correct the gross facial asymmetry to achieve a favorable outcome. Multiphased management involved scrupulous clinical planning, advanced imaging by computed tomgraphy scans, stereolithographic models to debulk the lesion. The second phase included pre surgical orthodontic evaluation along with correction of severe maxillary cant adopting a modified LeFort 1 osteotomy technique and standard bilateral sagittal split osteotomy, thereby simultaneously attaining functional stability and esthetic harmony.


Asunto(s)
Displasia Fibrosa Craneofacial , Asimetría Facial , Maxilar , Osteotomía Le Fort , Osteotomía Le Fort/métodos , Displasia Fibrosa Craneofacial/complicaciones , Displasia Fibrosa Craneofacial/diagnóstico por imagen , Displasia Fibrosa Craneofacial/cirugía , Asimetría Facial/etiología , Asimetría Facial/cirugía , Maxilar/anomalías , Maxilar/cirugía , Humanos , Masculino , Adulto Joven , Resultado del Tratamiento , Tomografía Computarizada por Rayos X
9.
J Vector Borne Dis ; 60(1): 49-56, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37026219

RESUMEN

BACKGROUND & OBJECTIVES: Timely intervention is needed to minimize the economic losses of vector-borne bovine anaplasmosis which can be possible by the isothermal amplification assay. METHODS: Anaplasma marginale in the cattle of south Gujarat, India was detected in the PCR and LAMP by amplifying the fragment of msp5 gene. The PCR product was digested with EcoRI, and sequenced to confirm its pathogen specific detection. RESULTS: Species specific PCR observed a band of 457 bp of msp5 DNA following 1% agarose gel electrophoresis. Positive LAMP reaction turned into yellow colour while negative sample depicted original pink colour. A detection limit of PCR and LAMP was up to 10-6 and 10-8 of the original genomic DNA of A. marginale, respectively. A single cut site of EcoRI was observed in the PCR product. Current msp5 DNA sequences of A. marginale (MW538962 and MW538961) showed 100% homology with the published sequences. Monophyletic lineage type relationship was observed with high bootstrap proportion among the msp5 DNA sequences of A. marginale in the phylogram. Prevalence rate of A. marginale was significantly higher (p<0.05) in the PCR [43/280 (15.36%)] and LAMP [62/280 (22.14%)] than the microscopic technique [17/280 (6.07%)]. Diagnostic sensitivity, specificity, positive and negative predictive values at 95% CI for LAMP assay with respect to PCR were 93.02%, 90.72%, 64.52% and 98.62%, respectively. INTERPRETATION & CONCLUSION: Thus LAMP can be a practical alternative to the PCR for the diagnosis of A. marginale infection in the cattle even in field condition.


Asunto(s)
Anaplasma marginale , Anaplasmosis , Enfermedades de los Bovinos , Bovinos , Animales , Anaplasma marginale/genética , Enfermedades de los Bovinos/diagnóstico , Enfermedades de los Bovinos/epidemiología , Técnicas de Amplificación de Ácido Nucleico , Anaplasmosis/diagnóstico , Anaplasmosis/epidemiología , Proteínas de la Membrana/genética
10.
Cleft Palate Craniofac J ; 60(5): 635-638, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-35068207

RESUMEN

Heterotopic neuroglial tissue represents normal glial tissue in an abnormal location distant from the central nervous system. It is a rare congenital condition and the majority of these lesions are diagnosed at birth or early childhood. We report a rare case scenario of a growth arising from the vomer associated with cleft palate. The origin of a glial choristoma from the midline of the nasal cavity in association with a cleft palate has not been reported in the literature. Complete surgical excision was performed prior to palatoplasty with no postoperative complications or evidence of recurrence.


Asunto(s)
Coristoma , Fisura del Paladar , Procedimientos de Cirugía Plástica , Recién Nacido , Humanos , Preescolar , Fisura del Paladar/complicaciones , Coristoma/cirugía , Coristoma/diagnóstico , Vómer/cirugía , Neuroglía/patología
11.
Med Mycol ; 60(2)2022 Feb 02.
Artículo en Inglés | MEDLINE | ID: mdl-35076069

RESUMEN

Invasive fungal co-infections with COVID-19 are currently being reported at an alarming rate. Our study explores the importance of early identification of the disease, probable etiopathogenesis, clinical and radiological features and a treatment protocol for COVID-19 Associated Fungal Osteomyelitis of Jaws and Sinuses (CAFOJS). A one-year prospective study from June 2020 to May 2021 was conducted among CAFOJS diagnosed patients at a tertiary care center in South India. Demographic details, COVID-19 infection and treatment history, time taken for initiation of symptoms after COVID-19 diagnosis, medical history and clinical features were recorded. All patients were managed with a standard diagnostic and intervention protocol which included pre-operative and post-operative administration of Inj. Amphotericin B 50 mg (liposomal), early aggressive surgical debridement and tab. Posaconazole GR 300 mg OD for 90 days after discharge. Thirty-nine (78%) patients were diagnosed with CAFOJS out of 50 osteomyelitis patients. 35 patients (90%) were diabetic and 21 patients (54%) were known to receive steroids during the COVID-19 treatment. Sole existence of Mucorales spp. was seen in 30 patients (77%), Aspergillus fumigatus in 2 patients (5%), Curvularia spp. in 2 patients (5%). Concomitant existence of Mucorales and Aspergillus fumigatus was reported in two patients (5%) and Candida albicans in three patients (8%). Patients underwent treatment with standard protocol and no recurrence noted. CAFOJS is a clinical entity with aggressive presentation and warrants early diagnosis and treatment. LAY SUMMARY: Invasive fungal infections of head and neck region cause necrosis of bones affected by it, especially maxilla. Early diagnosis and treatment are advocated in such infections due to its aggressive clinical presentation compared to similar infections before COVID-19 pandemic.


Asunto(s)
Tratamiento Farmacológico de COVID-19 , COVID-19 , Osteomielitis , Antifúngicos/uso terapéutico , COVID-19/diagnóstico , COVID-19/epidemiología , Prueba de COVID-19 , Comorbilidad , Humanos , Maxilares , Osteomielitis/diagnóstico , Osteomielitis/tratamiento farmacológico , Osteomielitis/epidemiología , Pandemias , Estudios Prospectivos , SARS-CoV-2
12.
Phys Chem Chem Phys ; 24(26): 15951-15957, 2022 Jul 06.
Artículo en Inglés | MEDLINE | ID: mdl-35730555

RESUMEN

Microstructural properties of the beryllium (Be) and silicon (Si) in periodic multilayer mirrors Be/Si with the variation of film thickness were comprehensively determined by Raman scattering. For the thinner films, the structure of Be evolved in the amorphous phase, and it was transformed into the polycrystalline phase for thicker films. The Si films in the periodic structure were condensed into the amorphous phase. The small fraction of nanocrystalline Si particles was distributed within the amorphous phase. A shake-up satellite peak of Si 2s photoelectrons was observed in X-ray photoelectron spectroscopy which suggested the excitation of a plasmon in Si films embedded within Be/Si periodic multilayers. The energy of plasmons was sensitive to the film thickness of Si in the periods which directly corresponds to the particle size. The binding energy of the satellite peak of Si 2s photoelectrons was blueshifted (higher energy) with a decrease in the particle size. This was explained by size dependent quantum confinement of particles.

13.
J Craniofac Surg ; 33(3): e230-e233, 2022 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-34261965

RESUMEN

ABSTRACT: The purpose of this paper is to highlight rare highly infiltrative massive Angiomatosis and depict surgical outcome of a rare case series of gigantic lesions in the maxillofacial region. Data were recorded from the medical records of patients. Predictor variables were drawn from demographics, age, gender, site, evaluation of surgical treatment. The outcome variables were the challenges encountered and related complications. Out of 6 patients, the youngest was 10 and the oldest was 26 years old. Soft tissue and jawbone involvement were seen in 3 patients each with a single massive lesion involving both maxilla and mandible. All 6 patients had wide excision of the lesion with one patient having 2 stage procedures. No complications or recurrence was seen at 1-year follow-up. Angiomatosis is a rare and benign lesion in the head and neck region. its diffuse infiltrating nature may give a false malignant picture. it clinically mimics Hemangioma or Arteriovenous (AV) malformation thus requires thorough evaluation and its surgical intervention is challenging as described in this case series because of its magnitude and infiltrative nature.


Asunto(s)
Angiomatosis , Hemangioma , Adulto , Angiomatosis/diagnóstico , Angiomatosis/patología , Angiomatosis/cirugía , Hemangioma/diagnóstico por imagen , Hemangioma/cirugía , Humanos , Mandíbula/patología
14.
Indian J Crit Care Med ; 26(10): 1106-1114, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36876213

RESUMEN

Introduction: The feasibility of implementing a revised Montpellier intubation bundle incorporating recent evidences was tested in a quality-improvement project. It was hypothesized that this "Care Bundle" implementation would reduce intubation-related complications. Materials and methods: The project was conducted in an 18-bedded multidisciplinary intensive care unit (ICU). Baseline data for intubations were collected over 3-month "Control Period". During the 2-month "Interphase", a revised intubation bundle was developed, and staff members involved in the intubation process were extensively trained on different aspects of intubation with emphasis on bundle components. Various components of the bundle were pre-intubation fluid loading, pre-oxygenation with NIV plus PS, positive-pressure ventilation post-induction, succinylcholine as a first-line induction agent, routine use of stylet, and lung recruitment within 2 minutes of intubation. Intubation data were collected again in the 3-month "Intervention Period". Results: Data were collected for 61 and 64 intubations, respectively, during control and intervention periods. There was significant improvement in compliance to five of six-bundle components; improvement in pre-intubation fluid loading during the intervention period did not reach statistical significance. Overall, at least 3 components of the bundle were complied within over 92% of intubations in the intervention period. However, whole-bundle compliance was limited to 14.3%. Incidences of major complications were reduced significantly in the intervention period (23.8% vs 45.9%, p = 0.01). There was significant reduction in profound hypotension (21.77% vs 29.51%, p = 0.04) and a nonsignificant 11.89% reduction in profound hypoxemia. There were no differences in minor complications. Conclusion: Implementation of an evidence-based revised Montpellier intubation bundle is feasible and it reduces major complications related to endotracheal intubation. How to cite this article: Ghosh S, Salhotra R, Arora G, Lyall A, Singh A, Kumar N, et al. Implementation of a Revised Montpellier Bundle on the Outcome of Intubation in Critically Ill Patients: A Quality Improvement Project. Indian J Crit Care Med 2022;26(10):1106-1114.

15.
Indian J Crit Care Med ; 26(12): 1275-1284, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36755637

RESUMEN

Introduction: This study aimed to address the issue of antibiotic prescription processes in an Indian Intensive care unit (ICUs). Materials and methods: In a prospective longitudinal study, all adult patients admitted in the ICU for 24 hours or above between 01 June 2020 and 31 July 2021 were screened for any new antibiotic prescription throughout their ICU stay. All new antibiotic prescriptions were assessed for baseline variables at prescription, any modifications during the course, and the outcome of antibiotic prescription. Results: A total of 1014 patients fulfilled entry criteria; 59.2 and 7.2% of days they were on a therapeutic and prophylactic antibiotic(s). Patients, who were prescribed therapeutic antibiotic(s), had worse ICU outcomes. A total of 49.5% of patients (502 of 1,014) received a total of 552 new antibiotic prescriptions during their ICU stay. About 92.13% of these prescriptions were empirical and blood or other specimens were sent for culture in 78.81 and 60.04% of instances. A total of 31.7% of episodes were microbiologically proven and were more likely to be prescribed by an ICU consultant. A total of 169 modifications were done in 142 prescription episodes; 73 of them after sensitivity results. Thus, the overall rate of de-escalation was 13.95%. Apart from the negative culture result (36.05%), an important reason for a relatively low rate of de-escalation was the absence of sampling (12.32%). Longer ICU stay before antibiotic prescription, underlying chronic liver disease (CLD), worse organ dysfunction, and septic shock were independently associated with unfavorable treatment outcomes. No such independent association was observed between antibiotic appropriateness and patient outcome. Conclusion: Future antibiotic stewardship strategies should address issues of high empirical prescription and poor microbiological sampling hindering the de-escalation process. How to cite this article: Ghosh S, Salhotra R, Singh A, Lyall A, Arora G, Kumar N, et al. New Antibiotic Prescription Pattern in Critically Ill Patients ("Ant-critic"): Prospective Observational Study from an Indian Intensive Care Unit. Indian J Crit Care Med 2022;26(12):1275-1284.

16.
Phys Chem Chem Phys ; 23(40): 23303-23312, 2021 Oct 20.
Artículo en Inglés | MEDLINE | ID: mdl-34632995

RESUMEN

In periodic W/Be multilayers, thickness-dependent microstructural and phase modifications were investigated in W and Be layers. In X-ray diffraction, α-W was predominant for the ultrathin layer of W, while ß-W evolved along with the α-W phase for higher film thickness. For the thicker layers, the thermodynamically metastable ß-W vanished and a single well-defined preferably oriented stable α-W phase was observed. The lattice spacing revealed that these phases exist in the tensile stressed condition. With the increase in thickness of Be layers, the blueshift and narrow linewidth of the transverse optical (TO) phonon mode was observed in Raman scattering studies. However, the TO mode was redshifted and the linewidth was further narrowed consistently with an increase in the thermal annealing temperature of the multilayers. The investigation has quantified an increase in compressive strain and reduction of defects with an increase in thickness of the Be layers. However, for thermally annealed samples, the compressive strain in the Be layers was relaxed and crystalline quality was improved.

17.
Phys Chem Chem Phys ; 23(28): 15076-15090, 2021 Jul 21.
Artículo en Inglés | MEDLINE | ID: mdl-34231591

RESUMEN

The phonon and plasmon excitations and electronic properties of interfaces of periodic W/Si and Si/W multilayer structures were investigated. The Boson band originated from quasilocal surface acoustic phonons for ultrathin Si layers, excited by Raman scattering. In confined Si layers, a small fraction of crystalline Si nanoclusters were embedded within a large volume fraction of amorphous Si (a-Si) nanoclusters. The size of the a-Si nanoclusters was smaller for the thinner Si layer in the periodic layers. The plasmon energy in the Si layer was blueshifted with a decrease in the thickness of this layer. This was explained by the size-dependent quantization of plasmon shift. The valence band spectra comprised a substantial fine structure, which is associated with the interaction of valence orbitals of the W and Si atoms at the interface boundaries. For thinner Si layers, the binding interaction of W5d and Si3p states leads to the splitting of the density of states near the Fermi level in the energy range of 1.5-5 eV. However, the energy splitting with two maxima was observed at 0.7 and 2.4 eV for thicker layers. Thus, the results of X-ray photoelectron spectroscopy have indicated that the interface of W/Si multilayers consists of metal-enriched tungsten silicide. Both the atomic structure and the elemental composition of the silicide were modified with a change in the thickness of the Si layers. This novel investigation could be essential for designing nanomirrors with higher reflectivity.

18.
J Oral Maxillofac Surg ; 79(12): 2562-2573, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34391720

RESUMEN

PURPOSE: Alveolar bone grafting is undertaken to provide stability to the dental arch and facilitate the eruption of permanent canine as teeth in the line of cleft usually have an altered pattern of eruption. The purpose of this study was to assess the eruption status and the change in the position and pattern of canine eruption after secondary alveolar bone grafting. METHODS: An ambispective cohort study was conducted in patients operated for alveolar bone grafting with unilateral/bilateral alveolar cleft between the age of 9 to 13 years using autogenous iliac crest bone graft. The predictor variables of interest include the preoperative eruption status of canine (completely erupted/partially erupted/unerupted), stage of root development (one-third/two-third/more than two-third/complete) and position (vertical/lateral/buccopalatal) of the canine. The primary outcome variable is the eruption status of the canine (completely erupted/partially erupted/unerupted) at 6 months postoperatively. Secondary outcome variables include the stage of root development, change in the vertical, lateral and buccopalatal position of the canine observed in the first 6 months postoperatively with follow-up at 1 and 3 months. Another secondary outcome variable was the status of bone graft at 6 months postoperatively. Statistical analysis was done using Spearman's rank correlation and ANOVA chi-square test. RESULT: The study sample consisted of 30 non-syndromic alveolar cleft patients with a mean age of 11.9 years, out of which partial and complete eruption of canine was seen in 43.33 and 36.67%, respectively. The canine was unerupted in 20% of the cases (P = .001). There was evidence of continued root development through the grafted bone. No significant change in the angulation of canine was observed in the postoperative period. CONCLUSION: Significant change in the eruption status and root development of canine with no statistically significant change in the vertical and lateral angulation during eruption was observed. Identifying these risk factors by continuous postoperative monitoring will help in identifying the malposition at an early stage.


Asunto(s)
Injerto de Hueso Alveolar , Labio Leporino , Fisura del Paladar , Adolescente , Trasplante Óseo , Niño , Estudios de Cohortes , Diente Canino/cirugía , Humanos , Erupción Dental
19.
Biomed Chromatogr ; 35(12): e5213, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34227143

RESUMEN

Cyantraniliprole is an anthranilic diamide insecticide used for the effective management of diamondback moth in cabbage. Dietary risk assessment of pesticides in food is a major concern now. This study developed a QuEChERS/HPLC-PDA-based highly efficient and reliable method, registering 89.80-100.11% recoveries of cyantraniliprole and its metabolite IN-J9Z38 from cabbage and soil with a relative standard deviation of 0.43-5.77%. Field experiment was conducted to study the residue dissipation of cyantraniliprole in cabbage and soil. Two foliar treatments of 10.26% formulation (Benevia) at 60 (T1 ) and 120 (T2 ) gram active ingredient/hectare were applied. The dissipation half-lives of cyantraniliprole in cabbage and soil were determined to be 3.5-4.2 and 3.8-5.3 days at T1 and 3.9-4.8 and 4.1-4.7 days at T2 , respectively. The maximum concentrations of IN-J9Z38 at T1 and T2 were 0.819 and 1.061 mg/kg, respectively, on the fifth day. A risk quotient value of <1 indicates no dietary risk to the consumers. The residues in the harvested cabbage were below the tolerance level of 2.0 mg/kg established by the regulatory body in India.


Asunto(s)
Brassica/química , Insecticidas , Residuos de Plaguicidas , Pirazoles , Contaminantes del Suelo , ortoaminobenzoatos , Brassica/efectos de los fármacos , Cromatografía Líquida de Alta Presión/métodos , Dieta , Humanos , Insecticidas/análisis , Insecticidas/farmacocinética , Insecticidas/toxicidad , Modelos Biológicos , Residuos de Plaguicidas/análisis , Residuos de Plaguicidas/farmacocinética , Residuos de Plaguicidas/toxicidad , Pirazoles/análisis , Pirazoles/farmacocinética , Pirazoles/toxicidad , Medición de Riesgo , Contaminantes del Suelo/análisis , Contaminantes del Suelo/farmacocinética , Contaminantes del Suelo/toxicidad , ortoaminobenzoatos/análisis , ortoaminobenzoatos/farmacocinética , ortoaminobenzoatos/toxicidad
20.
Cleft Palate Craniofac J ; 58(2): 163-169, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-32700576

RESUMEN

OBJECTIVES: The aim of this study is to know the prevalence, type of congenital heart diseases (CHDs), and its association with cleft lip and/or palate and to know the impact of CHDs on surgical treatment planning of cleft lip and palate from a craniofacial hospital specializing in orofacial clefts, head and neck cancer, and trauma management. DESIGN: A total of 1381 patients with nonsyndromic cleft lip and palate were included in the study. This is a hospital-based retro-prospective case record analysis. The data were collected from clinical records of the patients which included clinical, chest radiographic and 2D echocardiographic findings. Total incidence of CHDs and its impact on treatment planning was evaluated using κ statistics and χ2 test. RESULTS: There were 32 (2.32%) cleft lip and palate patients with CHDs. In 2 patients, cleft surgery was delayed by 6 to 9 months to allow the defect to decrease in size. Subacute bacterial endocarditis prophylaxis was administered in 7 patients before cleft surgery. Cardiac surgery was advised prior to cleft surgery in 3 patients. Sixteen patients with CHDs were not taken for cleft surgery considering the potential risk to the patient's life as they had multiple cardiac anomalies. There were no intraoperative and postoperative complications in these patients. CONCLUSION: The results emphasize the association between clefting and CHD. The collected data suggest that there should be careful examination of children with cleft lip and palate for signs of heart disease. This could significantly reduce the morbidity/mortality of cleft lip and palate surgery making it more predictable and safer.


Asunto(s)
Labio Leporino , Fisura del Paladar , Cardiopatías Congénitas , Niño , Labio Leporino/diagnóstico por imagen , Labio Leporino/cirugía , Fisura del Paladar/diagnóstico por imagen , Fisura del Paladar/cirugía , Estudios Transversales , Cardiopatías Congénitas/diagnóstico por imagen , Cardiopatías Congénitas/cirugía , Humanos , Estudios Prospectivos
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