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1.
Development ; 150(17)2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-37577954

RESUMO

Germ line integrity is crucial for progeny fitness. Organisms deploy the DNA damage response (DDR) signaling to protect the germ line from genotoxic stress, facilitating the cell-cycle arrest of germ cells and DNA repair or their apoptosis. Cell-autonomous regulation of germ line quality in response to DNA damage is well studied; however, how quality is enforced cell non-autonomously on sensing somatic DNA damage is less known. Using Caenorhabditis elegans, we show that DDR disruption, only in the uterus, when insulin/IGF-1 signaling (IIS) is low, arrests oogenesis in the pachytene stage of meiosis I, in a FOXO/DAF-16 transcription factor-dependent manner. Without FOXO/DAF-16, germ cells of the IIS mutant escape the arrest to produce poor-quality oocytes, showing that the transcription factor imposes strict quality control during low IIS. Activated FOXO/DAF-16 senses DDR perturbations during low IIS to lower ERK/MPK-1 signaling below a threshold to promote germ line arrest. Altogether, we elucidate a new surveillance role for activated FOXO/DAF-16 that ensures optimal germ cell quality and progeny fitness in response to somatic DNA damage.


Assuntos
Proteínas de Caenorhabditis elegans , Animais , Feminino , Proteínas de Caenorhabditis elegans/genética , Proteínas de Caenorhabditis elegans/metabolismo , Fatores de Transcrição Forkhead/genética , Fatores de Transcrição Forkhead/metabolismo , Caenorhabditis elegans/metabolismo , Insulina/metabolismo , Dano ao DNA/genética , Oogênese/genética , Longevidade/fisiologia
2.
PLoS Genet ; 18(5): e1010178, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35511794

RESUMO

Animals integrate changes in external and internal environments to generate behavior. While neural circuits detecting external cues have been mapped, less is known about how internal states like hunger are integrated into behavioral outputs. Here, we use the nematode C. elegans to examine how changes in internal nutritional status affect chemosensory behaviors. We show that acute food deprivation leads to a reversible decline in repellent, but not attractant, sensitivity. This behavioral change requires two conserved transcription factors MML-1 (MondoA) and HLH-30 (TFEB), both of which translocate from the intestinal nuclei to the cytoplasm during food deprivation. Next, we identify the insulin-like peptide INS-31 as a candidate ligand relaying food-status signals from the intestine to other tissues. Further, we show that neurons likely use the DAF-2 insulin receptor and AGE-1/PI-3 Kinase, but not DAF-16/FOXO to integrate these intestine-released peptides. Altogether, our study shows how internal food status signals are integrated by transcription factors and intestine-neuron signaling to generate flexible behaviors via the gut-brain axis.


Assuntos
Proteínas de Caenorhabditis elegans , Caenorhabditis elegans , Animais , Fatores de Transcrição Hélice-Alça-Hélice Básicos , Caenorhabditis elegans/genética , Proteínas de Caenorhabditis elegans/genética , Fatores de Transcrição Forkhead , Insulina , Intestinos , Assunção de Riscos , Fatores de Transcrição/genética
3.
J Surg Oncol ; 129(1): 128-137, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38031889

RESUMO

Many changes have occurred in the field of thoracic surgery over the last several years. In this review, we will discuss new diagnostic techniques for lung cancer, innovations in surgery, and major updates on latest treatment options including immunotherapy. All these have significantly started to change our approach toward the management of lung cancer and have great potential to improve the lives of our patients afflicted with this disease.


Assuntos
Neoplasias Pulmonares , Humanos , Estadiamento de Neoplasias , Neoplasias Pulmonares/patologia , Imunoterapia
4.
Australas J Dermatol ; 2024 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-38762801

RESUMO

BACKGROUND: Female-pattern hair loss (FPHL) is characterized by decreased scalp hair density, thinning of hair shafts, and progressive miniaturization of hair follicles. OBJECTIVE: To compare the safety and efficacy of spironolactone versus bicalutamide in female pattern hair loss [FPHL]. METHODS: The study design was retrospective, and all eligible females aged between 18 years and 50 years with FPHL were included. We identified 120 patients from our database who fulfilled the inclusion and exclusion criteria, and patients were then categorized into two groups, Group A comprising patients who were taking 100 mg of spironolactone once daily and Group B comprising patients who were taking 50 mg of bicalutamide once daily along with topical minoxidil 2% in both groups. Patient were analysed at approximately at 24 weeks from the commencement of the treatment. RESULTS: Mean reduction in hair loss severity score on Sinclair scale was 19.51% in spironolactone group compared to 28.20% in bicalutamide group at 24 weeks, which was statistically significant. On global photographic assessment, marked improvement was seen in bicalutamide group compared to spironolactone group (p = 0.139). CONCLUSIONS: Our study, though limited by its retrospective design and small sample size, showed that bicalutamide has greater efficacy and better safety profile in comparison to spironolactone in the treatment of FPHL.

5.
J Surg Oncol ; 127(2): 308-318, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36630092

RESUMO

Lung cancer is a deadly disease. Lymph node staging is the most important prognostic factor, and lymphatic drainage of the lung is complex. Major advances have been made in this field over the last several decades, but there is much left to understand and improve upon. Herein, we review the history of the lymphatic system and the creation of lymph node maps, the evolution of tumor, node, and metastasis lung cancer classification, the importance of lung cancer staging, techniques for lymph node dissection, and our recommendations regarding a minimum number of nodes to sample during pulmonary resection.


Assuntos
Neoplasias Pulmonares , Humanos , Metástase Linfática/patologia , Neoplasias Pulmonares/cirurgia , Neoplasias Pulmonares/patologia , Excisão de Linfonodo/métodos , Linfonodos/cirurgia , Linfonodos/patologia , Pulmão , Estadiamento de Neoplasias , Prognóstico
6.
Acta Radiol ; 64(8): 2431-2438, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37192645

RESUMO

BACKGROUND: Scalp arteriovenous malformations (AVMs), or cirsoid aneurysms of the scalp, usually present with troublesome symptoms and cosmetic disfigurement. Endovascular/percutaneous embolization has evolved as a sole treatment method or adjunct to surgical excision in the management of scalp AVMs with an excellent outcome. PURPOSE: To discuss minimally invasive techniques for treating scalp AVMs as well as to highlight the role of embolization before surgery. MATERIAL AND METHODS: This is a retrospective study of 50 patients with scalp AVM who underwent embolization (percutaneous/endovascular) during 2010-2019 at a tertiary care center. n-butyl cyanoacrylate (n-BCA) was used as an embolizing agent in all the cases and the patients were followed up at three- and six-month intervals with Doppler evaluation. RESULTS: A total of 50 patients were included in the study. The occipital region was the most common location; 82% were Schobinger class II lesions and 18% were class III lesions. Thirteen patients had small-sized AVMs and 37 patients had large-sized AVMs. Post-embolization surgery was performed in 36 patients. Of the patients, 28 underwent percutaneous embolization, 20 underwent endovascular embolization, and two underwent both to achieve complete embolization of the lesion. The number of percutaneous procedures increased in the latter half of the study period as the safety and efficacy of the technique were established. No major complications were seen in this study. CONCLUSION: Embolization of scalp AVMs is a safe and effective technique and can be used in isolation for small lesions and as an adjunct procedure to surgery for large-sized lesions.


Assuntos
Embolização Terapêutica , Malformações Arteriovenosas Intracranianas , Humanos , Malformações Arteriovenosas Intracranianas/cirurgia , Estudos Retrospectivos , Couro Cabeludo/irrigação sanguínea , Resultado do Tratamento , Embolização Terapêutica/métodos , Punções
7.
J Environ Sci Health B ; 58(11): 679-688, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37807607

RESUMO

The application of biocontrol agents in farm operations for pest control programs is gaining priority and preference globally. Effective delivery, infectivity of the biocontrol agents, and quality shelf-life products containing these bioagents are vital parameters responsible for the success of biopesticides under field conditions. In the present study, moisture-retaining bio-insecticidal dustable powder formulation (SaP) of Steinernema abbasi (Sa) infective juveniles (IJs) was developed and assessed for its shelf life, physicochemical profile, and bio-efficacy against subterranean termite under field conditions. Formulation exhibited free-flowing character, with pH of 6.50-7.50, and apparent density in the range 0.50-0.70 g cm-3. The bioefficacy study for two rabi seasons (2020-2021, and 2021-2022) in wheat and chickpea grown in an experimental farm heavily infested with subterranean termites (Odontotermes obesus) revealed a significant reduction in plant damage due to pest attack in formulation-treated plots, monitored in terms of relative number of infested tillers in wheat and infested plants in chickpea fields. The reduced damage to the crop caused by termite was reflected in the relative differences in the growth and yield attributes as well. The study establishes the potential of the developed product as a biopesticide suitable for organic farming and integrated pest management operations.


Assuntos
Cicer , Isópteros , Animais , Triticum , Pós , Controle Biológico de Vetores , Agentes de Controle Biológico
8.
Crit Rev Food Sci Nutr ; : 1-22, 2022 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-36128949

RESUMO

Technological improvements in dietary supplements and nutraceuticals have highlighted the significance of bioactive molecules in a healthy lifestyle. Eicosapentaenoic acid and Cervonic acid (DHA), omega-3 polyunsaturated fatty acids seem to be famed for their ability to prevent diverse physiological abnormalities. Selection of appropriate pretreatments and extraction techniques for extraction of lipids from robust microalgae cell wall are very important to retain their stability and bioactivity. Therefore, extraction techniques with optimized extraction parameters offer an excellent approach for obtaining quality oil with a high yield. Oils enriched in omega-3 are particularly imperiled to oxidation which ultimately affects customer acceptance. Bio active encapsulation could be one of the effective approaches to overcome this dilemma. This review paper aims to give insight into the cultivation methods, and downstream processes, various lipid extraction approaches, techniques for retaining oxidative stability, bioavailability and food applications based on extracted or encapsulated omega-3.

9.
Mol Breed ; 42(4): 21, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37309458

RESUMO

Improvement of grain protein content (GPC), loaf volume, and resistance to rusts was achieved in 11 Indian wheat cultivars that are widely grown in four different agro-climatic zones of India. This involved use of marker-assisted backcross breeding (MABB) for introgression and pyramiding of the following genes: (i) the high GPC gene Gpc-B1; (ii) HMW glutenin subunits 5 + 10 at Glu-D1 loci, and (iii) rust resistance genes, Yr36, Yr15, Lr24, and Sr24. GPC increased by 0.8 to 3.3%, although high GPC was generally associated with yield penalty. Further selection among high GPC lines allowed identification of progenies with higher GPC associated with improvement in 1000-grain weight and grain yield in the backgrounds of the following four cultivars: NI5439, UP2338, UP2382, and HUW468. The high GPC progenies (derived from NI5439) were also improved for grain quality using HMW glutenin subunits 5 + 10 at Glu-D1 loci. Similarly, progenies combining high GPC and rust resistance were obtained in the backgrounds of following five cultivars: Lok1, HD2967, PBW550, PBW621, and DBW1. The improved pre-bred lines developed following multi-institutional effort should prove a valuable source for the development of cultivars with improved nutritional quality and rust resistance in the ongoing wheat breeding programmes. Supplementary Information: The online version contains supplementary material available at 10.1007/s11032-022-01277-w.

10.
Dermatology ; 238(5): 870-875, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35390798

RESUMO

BACKGROUND: Clinical differentiation between different cheilitis variants may be difficult. Application of mucoscopy, in addition to clinical background, could provide additional diagnostic clues facilitating initial patient management. OBJECTIVES: To determine mucoscopic clues differentiating actinic cheilitis from the main forms of inflammatory cheilitis, including eczematous cheilitis, discoid lupus erythematosus, and lichen planus of the lips. METHODS: This was a retrospective, multicenter study being a part of an ongoing project "Mucoscopy - an upcoming tool for oral mucosal disorders" under the aegis of the International Dermoscopy Society. Cases included in the current study were collected via an online call published on the IDS website (www.dermoscopy-ids.org) between January 2019 and December 2020. RESULTS: Whitish-red background was found in actinic cheilitis as well as in cheilitis due to discoid lupus erythematous and lichen planus. Polymorphous vessels were more likely to be seen in actinic cheilitis compared to other causes of cheilitis. White scales, ulceration, and blood spots predominated in actinic cheilitis and lichen planus, whereas yellowish scales typified eczematous and discoid lupus erythematous cheilitis. Radiating white lines although most common in lichen planus patients were also seen in actinic cheilitis. CONCLUSION: Despite differences in the frequency of mucoscopic structures, we have not found pathognomonic features allowing for differentiation between analyzed variants of cheilitis.


Assuntos
Queilite , Líquen Plano , Lúpus Eritematoso Discoide , Doenças da Boca , Queilite/diagnóstico por imagem , Dermoscopia , Humanos , Líquen Plano/diagnóstico por imagem , Estudos Retrospectivos
11.
AAPS PharmSciTech ; 23(4): 95, 2022 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-35314902

RESUMO

COVID-19 caused by coronavirus SARS-CoV-2 became a serious threat to humankind for the past couple of years. The development of vaccine and its immediate application might be the only to escape from the grasp of this demoniac pandemic. Approximately 343 clinical trials on COVID-19 vaccines are ongoing currently, and almost all countries are motivating ongoing researches at warp speed for the development of vaccines against COVID-19. This review explores the progress in the development of the vaccines, their current status of ongoing clinical research, mechanisms, and regulatory approvals. Many pharmaceutical companies are already in the endgame for manufacturing various vaccines of which some are already being marketed across the globe, while others are yet to get approval for marketing. The primary aim of this review is to compare regulatory accepted vaccines in terms of their composition, doses, regulatory status, and efficacy. The study is conducted by grouping into approved and unapproved vaccines for marketing. Different routes of administration of vaccines along with the efficacy of the routes are also presented in the review. A wide range of database and clinical trial data is reviewed for sorting out the information on different vaccines. Unfortunately, many mutations (alpha, beta, gamma, delta, kappa, omicron etc.) of SARS-CoV-2 have attacked people in very short time, which is the great challenge for investigational vaccines. Moreover, some vaccines like Pfizer's BNT162, Oxford's ChAdOx1, Moderna's mRNA-1273, and Bharat Biotech's Covaxin have got regulatory approval in some countries for its distribution which may prove to stand tall against the pandemic.


Assuntos
COVID-19 , Vacinas Virais , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Humanos , SARS-CoV-2
12.
Ecol Food Nutr ; 61(2): 144-161, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34428117

RESUMO

This study was undertaken to analyze the dietary pattern and nutritional status of preschool children and to check the association between diet and socio-demographic factors. Dietary Pattern of 390 preschool children from Udham Singh Nagar district of Uttarakhand state of India was assessed. 24-Hour dietary recall and food frequency questionnaire (FFQ) was used for collecting information regarding dietary intake for three consecutive days. Nutritional indices (weight for age, height for age, weight for height, and BMI for age Z score) were studied using WHO Anthro software. Results indicated that the nutrient intake was inadequate, with major children consuming less than 60% of the recommended intake. Family income, community, type of family, birth order (ordinal position), and the number of siblings were associated with dietary insufficiency (p < 0.05). Stunting and wasting were commonly prevalent in more number of girls as compared to boys, on the contrary; more boys were underweight as compared to girls. A higher proportion of girls 18% (95% C.I. 10.8, 25.3) were thin as compared to boys 15% (95% C.I. 8.4, 21.6).


Assuntos
Dieta , Estado Nutricional , Estatura , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Avaliação Nutricional , Magreza/epidemiologia
13.
Physiol Plant ; 2021 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-33713449

RESUMO

Contaminations of heavy metals such as lead (Pb) and cadmium (Cd) in medicinal plants (MPs) not only restrict their safe consumption due to health hazards but also lower their productivity. Biochar amendments in the soil are supposed to immobilize the toxic metals, improve the soil quality and agricultural productivity. However, the impact of biochar on growth attributes, metal accumulation, pharmacologically active compounds of MPs, and health risk is less explored. An experiment was performed on three medicinal plants (Bacopa monnieri (L.), Andrographis paniculata (Burmf.) Nees, and Withaniasomnifera (L.)) grown in a greenhouse in soil co-contaminated with Pb and Cd (at two concentrations) without and with biochar amendments (2 and 4% application rates). The fractionation of Pb and Cd, plant growth parameters, stress enzymes, photosynthetic capacity, pharmacologically active compounds, nutrient content, uptake and translocation of metals, antioxidant activities, and metabolite content were examined in the three MPs. The accumulation of Pb and Cd varied from 3.25-228 mg kg1 and 1.29-20.2 mg kg-1 , respectively, in the three MPs, while it was reduced to 0.08-18 mg kg-1 and 0.03-6.05 mg kg-1 upon biochar treatments. Plants grown in Pb and Cd co-contaminated soil had reduced plant biomass (5-50% depending on the species) compared to control and a deleterious effect on photosynthetic attributes and protein content. However, biochar amendments significantly improved plant biomass (21-175%), as well as photosynthesis attributes, chlorophyll, and protein contents. Biochar amendments in Pb and Cd co-contaminated soil significantly reduced the health hazard quotient (HQ) estimated for the consumption of these medicinal herbs grown on metal-rich soil. An enhancement in secondary metabolite content and antioxidant properties was also observed upon biochar treatments. These multiple beneficial effects of biochar supplementation in Pb and Cd co-contaminated soil suggested that a biochar amendment is a sustainable approach for the safe cultivation of MPs. This article is protected by copyright. All rights reserved.

14.
Chem Biodivers ; 18(9): e2100320, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34245651

RESUMO

Root-knot nematode, Meloidogyne incognita is one of the most destructive nematodes worldwide. Essential oils (EOs) are being extensively utilized as eco-benign bionematicides, although the precise mechanism of action remains unclear. Pogostemon cablin Benth. is well-known as "Patchouli". It is native to South East Asia and known for ethno-pharmacological properties. In this study, chemical composition and potential nematicidal effect of EOs hydrodistilled from the leaves of P. cablin grown at three different locations in India were comprehensively investigated to correlate their mechanism of action for target specific binding affinities toward nematode proteins. Aromatic volatile Pogostemon essential oils (PEO) from Northern India (PEO-NI), Southern India (PEO-SI) and North Eastern India (PEO-NEI) were analyzed by Gas Chromatography-Mass Spectrometry (GC/MS) to characterize forty volatile compounds. Maximum thirty-three components were identified in PEO-NEI. Sesquiterpenes were predominant with higher content of α-guaiene (2.3-24.4 %), patchoulol (6.1-32.7 %) and α-bulnesene (5.9-27.1 %). Patchoulol was the major component in PEO-SI (32.7±1.2 %) and PEO-NEI (29.2±1.1 %), while α-guaiene in PEO-NI (24.4±1.2 %). In vitro nematicidal assay revealed significant nematicidal action (LC50 44.6-87.0 µg mL-1 ) against juveniles of M. incognita within 24 h exposure. Mortality increases with increasing time to 48 h (LC50 33.6-71.6 µg mL-1 ) and 72 h (LC50 27.7-61.2 µg mL-1 ). Molecular modelling and in silico studies revealed multi-modal inhibitive action of α-bulnesene (-22 to -13 kJ mol-1 ) and α-guaiene (-22 to -12 kJ mol-1 ) against three target proteins namely, acetyl cholinesterase (AChE), odorant response gene-1 (ODR1), odorant response gene-3 (ODR3). Most preferable binding mechanism was observed against AChE due to pi-alkyl, pi-sigma, and hydrophobic interactions. Structure nematicidal activity relationship suggested the presence of hydroxy group for nematicidal activity is nonessential, rather highly depends on synergistic composition of sesquiterpene hydrocarbons.


Assuntos
Antinematódeos/farmacologia , Simulação de Acoplamento Molecular , Pogostemon/química , Tylenchoidea/efeitos dos fármacos , Animais , Antinematódeos/química , Antinematódeos/isolamento & purificação , Relação Dose-Resposta a Droga , Índia , Folhas de Planta/química
15.
Int J Mol Sci ; 22(14)2021 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-34299014

RESUMO

PIN-FORMED (PIN) genes play a crucial role in regulating polar auxin distribution in diverse developmental processes, including tropic responses, embryogenesis, tissue differentiation, and organogenesis. However, the role of PIN-mediated auxin transport in various plant species is poorly understood. Currently, no information is available about this gene family in wheat (Triticum aestivum L.). In the present investigation, we identified the PIN gene family in wheat to understand the evolution of PIN-mediated auxin transport and its role in various developmental processes and under different biotic and abiotic stress conditions. In this study, we performed genome-wide analysis of the PIN gene family in common wheat and identified 44 TaPIN genes through a homology search, further characterizing them to understand their structure, function, and distribution across various tissues. Phylogenetic analyses led to the classification of TaPIN genes into seven different groups, providing evidence of an evolutionary relationship with Arabidopsis thaliana and Oryza sativa. A gene exon/intron structure analysis showed a distinct evolutionary path and predicted the possible gene duplication events. Further, the physical and biochemical properties, conserved motifs, chromosomal, subcellular localization, transmembrane domains, and three-dimensional (3D) structure were also examined using various computational approaches. Cis-elements analysis of TaPIN genes showed that TaPIN promoters consist of phytohormone, plant growth and development, and stress-related cis-elements. In addition, expression profile analysis also revealed that the expression patterns of the TaPIN genes were different in different tissues and developmental stages. Several members of the TaPIN family were induced during biotic and abiotic stress. Moreover, the expression patterns of TaPIN genes were verified by qRT-PCR. The qRT-PCR results also show a similar expression with slight variation. Therefore, the outcome of this study provides basic genomic information on the expression of the TaPIN gene family and will pave the way for dissecting the precise role of TaPINs in plant developmental processes and different stress conditions.


Assuntos
Ácidos Indolacéticos/metabolismo , Família Multigênica/genética , Estresse Fisiológico/genética , Triticum/genética , Sequência de Aminoácidos , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Bases de Dados Genéticas , Evolução Molecular , Éxons , Perfilação da Expressão Gênica , Regulação da Expressão Gênica de Plantas/genética , Ontologia Genética , Genoma de Planta , Genômica , Íntrons , Proteínas de Membrana Transportadoras/genética , Oryza/genética , Filogenia , Proteínas de Plantas/química , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Regiões Promotoras Genéticas , Domínios Proteicos , Mapas de Interação de Proteínas , Triticum/crescimento & desenvolvimento , Triticum/metabolismo
16.
Int J Mol Sci ; 22(16)2021 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-34445448

RESUMO

Brassinosteroids (BRs) play crucial roles in various biological processes, including plant developmental processes and response to diverse biotic and abiotic stresses. However, no information is currently available about this gene family in wheat (Triticum aestivum L.). In the present investigation, we identified the BZR gene family in wheat to understand the evolution and their role in diverse developmental processes and under different stress conditions. In this study, we performed the genome-wide analysis of the BZR gene family in the bread wheat and identified 20 TaBZR genes through a homology search and further characterized them to understand their structure, function, and distribution across various tissues. Phylogenetic analyses lead to the classification of TaBZR genes into five different groups or subfamilies, providing evidence of evolutionary relationship with Arabidopsis thaliana, Zea mays, Glycine max, and Oryza sativa. A gene exon/intron structure analysis showed a distinct evolutionary path and predicted the possible gene duplication events. Further, the physical and biochemical properties, conserved motifs, chromosomal, subcellular localization, and cis-acting regulatory elements were also examined using various computational approaches. In addition, an analysis of public RNA-seq data also shows that TaBZR genes may be involved in diverse developmental processes and stress tolerance mechanisms. Moreover, qRT-PCR results also showed similar expression with slight variation. Collectively, these results suggest that TaBZR genes might play an important role in plant developmental processes and various stress conditions. Therefore, this work provides valuable information for further elucidate the precise role of BZR family members in wheat.


Assuntos
Brassinosteroides/metabolismo , Família Multigênica , Filogenia , Proteínas de Plantas/genética , Estresse Fisiológico , Triticum/genética , Arabidopsis/genética , Perfilação da Expressão Gênica , Regulação da Expressão Gênica de Plantas , Genes de Plantas , Genoma de Planta , Genômica , Oryza/genética , Proteínas de Plantas/metabolismo , Proteínas de Plantas/fisiologia , Glycine max/genética , Triazóis , Triticum/metabolismo , Triticum/fisiologia , Zea mays/genética
17.
J Environ Sci Health B ; 56(3): 212-221, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33560902

RESUMO

Tebuconazole (TBZ) and Chlormequat chloride (CCC) combination has been established as highly effective in reducing plant height of lodging prone wheat varieties. In this work, a novel analytical method employing the quick, easy, cheap, effective, rugged and safe (QuEChERS) cleanup technique and LC-MS/MS (liquid chromatography-tandem mass spectroscopy) was developed for simultaneous estimation of TBZ and CCC in wheat grains and harvest stage plant leaves. A total of 10 mL of acetonitrile and 50 mg of primary secondary amine (PSA) sorbent was consumed in the optimized QuEChERS process for leaves and grain samples. The LC-MS/MS analysis was performed using a C-18 column operating under electrospray ionization in positive mode. The QuEChERS approach achieved extraction recoveries in the acceptable range of 70%-120%, for both the compounds and was validated in terms of accuracy, precision, sensitivity and linearity. Persistence study was conducted using Lihocin (CCC 50% SL), Folicur (TBZ 25.9% EC) and their combination tank mix (Lihocin + Folicur-50% SL + 25.9% EC) applied as foliar spray twice in wheat crop (tester tall variety C-306). The results demonstrated that the developed QuEChERS-LCMS/MS is rapid and confirmatory for simultaneous quantification of both the test analytes in wheat crop.


Assuntos
Fracionamento Químico/métodos , Clormequat/análise , Espectrometria de Massas em Tandem/métodos , Triazóis/análise , Triticum/química , Acetonitrilas , Agricultura/métodos , Cromatografia Líquida/métodos , Produtos Agrícolas/química , Análise de Alimentos/métodos , Contaminação de Alimentos/análise , Folhas de Planta/química , Reprodutibilidade dos Testes , Sementes/química , Sensibilidade e Especificidade
18.
J Environ Sci Health B ; 56(12): 1007-1022, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34779690

RESUMO

The present study was aimed to examine the antibacterial potential of Brassica nigra essential oil (BNEO) against Ralstonia solanacearum, causal agent of bacterial wilt and Nitrosomonas sp., the nitrifying bacteria. In poisoned food assay, BNEO showed 100% growth inhibition of R. solancearum at ≥ 125 µg mL-1. Revalidation of findings by volatile assay employing inverted Petri plate technique exhibited 100% bacterial growth inhibition caused by vapors of BNEO, even at 50 µg mL-1 concentration. In the broth microdilution assay, the BNEO exhibited significant antibacterial activity only at higher concentrations (>500 µg mL-1). At 500 µg mL-1, BNEO showed 80% bacterial growth inhibition over control, which was at par with that of streptomycin (5 µg mL-1). In resazurin microtitre-plate assay, the maximum concentration of BNEO, at which color change occurred was 512 µg mL-1 (T9), and thus 512 µg mL-1 was concluded as the minimum inhibitory concentration (MIC). BNEO effectively inhibited the activity of Nitrosomonas spp. with 30-65% nitrification inhibition at the dose of 400 mkg-1 of Urea-N. Homology modeled protein targets assisted computational tool-based novel analysis helped to understand that the antibacterial potency of BNEO is due to preferable binding efficiency of allyl isothiocyanate (AITC), the major active ingredient of BNEO.


Assuntos
Óleos Voláteis , Ralstonia solanacearum , Antibacterianos/farmacologia , Bactérias , Testes de Sensibilidade Microbiana , Mostardeira , Óleos Voláteis/farmacologia
19.
Funct Integr Genomics ; 19(1): 43-60, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29943206

RESUMO

SOC1, a MADS-box type II transcription factor, integrates environmental and endogenous cues to promote flowering in angiosperms. Recent reports implicating SOC1 in roles beyond floral transition prompted functional characterization of SOC1 in polyploid rapeseed mustard genomes. Gene characterization in Brassicas necessitates analysis of composite homeolog function. While insertional mutagenesis is untenable in Brassicas owing to gene redundancy, gain-of-function approach entails serial characterization of individual homeologs. Herein, we demonstrate modulated floral promotive effects in natural variants of Brassica SOC1 and provide lateral branching as a probable outcome of polyploidy-induced gene diversification. Ectopic expression of two B genome specific SOC1 variants in Arabidopsis thaliana resulted in differential floral acceleration and manifestation of multiple vegetative rosettes. Characterization of composite homeolog function in B. juncea via introgression of Brassica SOC1 specific artificial miRNA, designed to target homeologs, also exhibited modifications in floral transition and lateral branching. Comprehensive analysis of field performance of B. juncea transgenics displayed altered fitness across 11 agronomic traits. Crucially, reduced SOC1 levels directly impacted two developmental traits, namely, flowering time and number of lateral branches which in turn influenced several dependent agronomic traits. While delayed flowering and crop maturity resulted in altered fatty acid composition with higher SFA and lower PUFA in transgenics relative to controls, reduction in overall count of lateral branches caused a concomitant decrease in silique count which ultimately impacted total seed yield in transgenics. Statistical analysis revealed number of secondary branches as the most critical trait influencing seed yield. Based on our findings, we propose enhancing levels Brassica SOC1, a key target, for achieving earliness in flowering, improved seed yield and oil quality, and studying trait trade-offs.


Assuntos
Proteínas de Arabidopsis/genética , Regulação da Expressão Gênica no Desenvolvimento , Regulação da Expressão Gênica de Plantas , Proteínas de Domínio MADS/genética , Mostardeira/genética , Óleos de Plantas/metabolismo , Sementes/genética , Arabidopsis/genética , Arabidopsis/crescimento & desenvolvimento , Arabidopsis/metabolismo , Proteínas de Arabidopsis/metabolismo , Pareamento de Bases , Sequência de Bases , Ácidos Graxos/metabolismo , Flores/genética , Flores/crescimento & desenvolvimento , Flores/metabolismo , Interação Gene-Ambiente , Aptidão Genética , Metabolismo dos Lipídeos/genética , Proteínas de Domínio MADS/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Mostardeira/crescimento & desenvolvimento , Mostardeira/metabolismo , Conformação de Ácido Nucleico , Óleos de Plantas/química , Caules de Planta/genética , Caules de Planta/crescimento & desenvolvimento , Caules de Planta/metabolismo , Plantas Geneticamente Modificadas , Poliploidia , RNA de Plantas/genética , RNA de Plantas/metabolismo , Sementes/química , Sementes/crescimento & desenvolvimento , Sementes/metabolismo , Fatores de Tempo
20.
AAPS PharmSciTech ; 20(6): 220, 2019 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-31201588

RESUMO

In this study, poly-(lactic-co-glycolic) acid (PLGA) was conjugated with aspartic acid and was characterized by nuclear magnetic resonance and Fourier transform infrared spectroscopy. Docetaxel-loaded polymeric micelles were prepared, and piperine was tagged. The neuroblastoma cytotoxicity studies revealed a substantially higher cytotoxic potential of the developed system to that of plain docetaxel, which was further corroborated by cellular uptake employing confocal laser scanning microscopy. The hemocompatible system was able to enhance the pharmacokinetic profile in terms of 6.5-fold increment in bioavailability followed by a 3.5 times increase in the retention time in comparison with the plain drug. The single-point brain bioavailability of docetaxel was amplified by 3.3-folds, signifying a better uptake and distribution to brain employing these carriers. The findings are unique as the physically adsorbed piperine was released before the DTX, increasing the propensity of curbing the CYP3A4 enzyme, which plays a vital role in the degradation of docetaxel. Meanwhile, piperine might have compromised the P-gp efflux mechanism, which can be ascribed to the enhanced retention of the drug at the target site. The elevated target site concentrations and extended residence by a biocompatible nanocarrier supplemented with co-delivery of piperine inherit immense promises to deliver this BCS class IV drug more safely and effectively.


Assuntos
Alcaloides/química , Antineoplásicos Fitogênicos/administração & dosagem , Benzodioxóis/química , Docetaxel/administração & dosagem , Micelas , Piperidinas/química , Alcamidas Poli-Insaturadas/química , Animais , Antineoplásicos Fitogênicos/farmacocinética , Disponibilidade Biológica , Encéfalo/metabolismo , Linhagem Celular Tumoral , Docetaxel/farmacocinética , Humanos , Ratos , Ratos Wistar , Espectroscopia de Infravermelho com Transformada de Fourier
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