Ion transporters and their molecular regulation mechanism in plants
Published on: 25th May, 2021
OCLC Number/Unique Identifier: 9057592313
With the global population predicted to grow by at least 25% by 2050, the need for sustainable production of nutritious foods is important for human and environmental health. Recent progress demonstrate that membrane transporters can be used to improve yields of staple crops, increase nutrient content and resistance to key stresses, including salinity, which in turn could expand available arable land. Exposure to salt stress affects plant water relations and creates ionic stress in the form of the cellular accumulation of Na+ and Cl− ions. However, salt stress also impacts heavily on the homeostasis of other ions such as Ca2+, K+, and NO3- and therefore requires insights into how transport and compartmentation of these nutrients are altered during salinity stress. Since Na+ interferes with K+ homeostasis, maintaining a balanced cytosolic Na+/K+ ratio has become a key salinity tolerance mechanism. Achieving this homeostatic balance requires the activity of Na+ and K+ transporters and/or channels. The aim of this review is to seek answers to this question by examining the role of major ions transporters and channels in ions uptake, translocation and intracellular homeostasis in plants.
Chronic recurrent bilateral granulomatous iridocyclitis in an 18-year-old woman
Published on: 31st July, 2018
OCLC Number/Unique Identifier: 7814922520
Pathogen identification and control of sooty spot caused by Cladosporium ramotenellum, appearing on fresh easy peeler mandarins from Perú
Published on: 9th June, 2021
OCLC Number/Unique Identifier: 9077092985
During the 2018 season, superficial dry and firm black spots, where sometimes an aerial mycelium developed, appeared on the rind of easy peeler mandarins causing high economic losses in fresh citrus exports from Perú. In this work, we have identified the causal agent, a species of Cladosporium not previously reported as a citrus pathogen. The pathogen was isolated from rind lesions of affected fruit and was identified by sequencing as Cladosporium ramotenellum; and fulfilment of Koch postulates was proven. This species was present on the surface of immature fruit in the groves, indicating that the infection is likely initiated before harvest. Cladosporium ramotenellum is resistant to the postharvest fungicides imazalil, pyrimethanil, and thiabendazole, but sensitive to propiconazole, prochloraz, and ortho-phenylphenol. We designed a postharvest industrial treatment to decrease the Cladosporium sp. load on the fruit surface that limited the incidence of infection and reduced the postharvest losses caused by the fungus. Although this species is quite ubiquitous, this is the first description of C. ramotenellum causing decay of citrus fruit, being the symptoms of this disease similar to the ones described previously and caused by Cladosporium cladosporoides in cv. Satsuma mandarins from Japan.
Pandemic as the second stage of the extinction of our civilization
Published on: 4th October, 2022
In the twentieth century, the works of W. Wien, M. Planck and A. Einstein. Lord Rayleigh, Sh. Bose, L. Landau, M. Weinstein, Yu. Chukova and P. Landsberg [1-5] created a new science – quantum thermodynamics, which formulated the law of the efficiency of conversion of electromagnetic radiation into other types of energy for isothermal processes in open thermodynamic systems. This efficiency is of the greatest interest since the whole living world is a huge factory of isothermal processes.
Is community based case detection of glaucoma relevant? Intraocular Pressure level and vertical Cup Disc ratio of participants at a screening programme in a rural setting in Nigeria
Published on: 12th November, 2018
OCLC Number/Unique Identifier: 7929242578
To determine the proportion of participants with elevated intraocular pressure and abnormal vertical cup disc ratio in a glaucoma screening event in a rural community in Nigeria.
Methods: 242 eyes of 121 participants at a one-day screening programme were examined. Visual acuity was accessed using Snellen literate and illiterate charts, followed by a pen torch examination of the anterior segment. The posterior segment was accessed using a direct ophthalmoscope (Welch Allyn, USA). All participants had intraocular accessed using Keeler non contact tonometer and those with significant media opacity preventing view of the posterior pole had cycloplegic examination after dilatation with 1%Tropicamide drops. Data generated was expressed as percentages and means.
Results: 121 participants (242 eyes) were examined. There were 42 males and 79 females giving a M:F ratio of 1:1.86. Age range of participants was 0-90years with a peak in the 5th decade. Mean age was 32 years. 79.3% of participants had normal visual acuity of 6/4 -6/18, while 9.5% had visual acuity worse than 6/60.
83% of eyes had intraocular pressure within normal level, <21mmHg, 12.4% within 21-30mmHg and 4.6% >30mmHg.
73.1% of eyes had Vertical Cup disc ratio (VCDR) <0.5, 10.7% had 0.5-0.7 and 6.6%>0.7. 9.6% of eyes could not be accessed due to media opacities.
Conclusion: 6.6% of participants had suspicious discs and 4.6% participants had intraocular pressures above 30mmHg. Opportunistic screening for glaucoma remains one of the important modes of case detection for glaucoma in the developing climes and should be encouraged as a way to address the scourge of this blinding disease.
The Evolutionary Horizons of Social Systems
Published on: 17th January, 2025
This document has been translated from Spanish into English using ChatGPT. While efforts have been made to ensure accuracy and maintain the original meaning, some nuances or interpretations may differ from the source text. For any clarification, please refer to the original document or contact the author.This brief article addresses the concern arising from the accelerated whirlwind of changes of all kinds experienced by our social systems, some of which have a significant evolutionary impact, largely driven by advances in science and technology. Particular interest has emerged in connecting certain properties inherent to the behavior of complex systems far from equilibrium—such as social systems—under the framework of properties currently studied in Complexity Sciences. The article outlines this concern, which is, for now, merely the beginning of what could develop into a groundbreaking investigation. It references laboratory simulation work aimed at understanding the evolutionary horizons of Chile’s social system. The text includes an example of some graphs that illustrate a potential method for detecting and anticipating possible evolutionary horizons of the social system, based on the role played by certain “attractor variables” within the system. However, the research is still exploratory, and this article serves merely as a general description of the initial concern.
Convenient route synthesis of some new benzothiazole derivatives and their pharmacological screening as antimicrobial agents
Published on: 29th August, 2017
OCLC Number/Unique Identifier: 7286359000
Background: The reaction of 2-(benzo]d[thiazol-2-yl)-3-oxopentanedinitrile 4 with DMF/DMA has been investigated to explore the synthetic potentialities of this novel activated nitrile in heterocyclic synthesis.
Results: Pyrano, pyridino, pyrazolo, azepino and oxothiepano carbonitrile derivatives could be obtained starting from 4 and plausible mechanisms for their formations are reported.
Conclusion: The newly synthesized compounds were assessed for their antimicrobial activity. Compounds 7, 10 and 12 exhibited broad spectrum antibacterial profile against the tested organisms.
PTM-Fetuin-A: A Novel Biomarker for Early Detection of Diabetic Kidney Disease
Published on: 24th January, 2025
Chronic Kidney Disease (CKD) is a significant public health issue with a rising prevalence globally. Diabetic kidney disease (DKD), a leading cause of CKD, necessitates improved biomarkers for early detection and effective management. Traditional markers such as serum creatinine, estimated glomerular filtration rate (eGFR), and albuminuria have notable limitations in sensitivity and specificity, especially for early detection. Fetuin-A, specifically its post-translationally modified form (PTM-Fetuin-A), has emerged as a potential novel biomarker for DKD. This study evaluates PTM-Fetuin-A in a cohort of Bulgarian patients with type 1 and type 2 diabetes, assessing its correlation with traditional markers such as albuminuria and eGFR. Significant correlations were observed between PTM-Fetuin-A and these indicators (e.g., Pearson’s r = 0.447, p = 0.025 for albuminuria), highlighting its ability to detect early kidney function decline. Furthermore, PTM-Fetuin-A demonstrated potential as a non-invasive tool for identifying normoalbuminuric DKD, addressing gaps left by conventional biomarkers. By offering additional prognostic value, PTM-Fetuin-A could improve the early diagnosis and clinical management of diabetic patients, reducing the burden of CKD.
Synthesis of some new Schiff bases of Pharmaceutical Interest
Published on: 26th September, 2017
OCLC Number/Unique Identifier: 7286424219
A series of Schiff bases of diphenylamine derivatives have been synthesized and evaluated in vitro for their antibacterial activity against pathogenic both Gram-positive bacteria B. subtilis and Gram-negative bacteria E. coli using ciprofloxacin as standard drug at conc. of 50 µg/ml and 100 µg/ml. The structures of these compounds were established on the basis of IR and 1H-NMR spectral analysis. The compound (3d) displayed potent antibacterial activity against Bacillus subtilis (17 and 15mm) and Escherichia coli (19 and 17mm) by disc diffusion method.
Exploring Dermatofunctional Perspectives beyond Aesthetics: An Integrative Literature Review
Published on: 21st June, 2024
Introduction: Dermatofunctional Physiotherapy is an area of physiotherapeutic specialty that aims to promote, prevent, and treat integumentary injuries. However, this field of action is usually erroneously limited to aesthetic and cosmetic procedures. However, the scope of Physical Therapy goes beyond aesthetic procedures. Objective: To identify the scope of dermatofunctional physiotherapy beyond aesthetics. Methodology: This is an integrative literature review with the objective of summarizing and exploring the proposed theme. For this, the PRISMA guidelines were used, as well as the PICOT strategy for a better delineation of the research question and research theme. Results and discussions: It was observed that the role of the physiotherapist in this field is directly related to aesthetics, which is one of the most prosperous segments within the health area, due to the great demand for aesthetic procedures. Among the main resources evidenced in this study, lymphatic drainage, electrothermophototherapeutic resources, myofascial release, and manual techniques were observed. Final considerations: The area of physical therapy is not exclusively dedicated to the aesthetic environment, it was observed that this specialty acts strongly in the promotion, and prevention of rehabilitation of patients with metabolic, integumentary, and musculoskeletal alterations, in addition to promoting and preventing diseases related to obesity, scars, geloid edema, flaccidity, and other integumentary dysfunctions.
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