Significance of siderophore-producing cyanobacteria on enhancing iron uptake potentiality of maize plants grown under iron-deficiency.

Background: In response to iron deficiency and other environmental stressors, cyanobacteria producing siderophores can help in ameliorating plant stress and enhancing growth physiological and biochemical processes. The objective of this work was to screen the potential of Arthrospira platensis, Pseudanabaena limnetica, Nostoc carneum, and Synechococcus mundulus for siderophore production to select the most promising isolate, then to examine the potentiality of the isolated siderophore in promoting Zea mays seedling growth in an iron-limited environment.

Results: Data of the screening experiment illustrated that Synechococcus mundulus significantly recorded the maximum highest siderophore production (78 ± 2%) while the minimum production was recorded by Nostoc carneum (24.

Modified RTK-GNSS for Challenging Environments.

Real-Time Kinematic Global Navigation Satellite System (RTK-GNSS) is currently the premier technique for achieving centimeter-level accuracy quickly and easily. However, the robustness of RTK-GNSS diminishes in challenging environments due to severe multipath effects and a limited number of available GNSS signals. This is a pressing issue, especially for GNSS users in the navigation industry.

Effect of ethanolic extract of propolis on antibacterial and microshear bond strength of glass-ionomer restorations to dentin.

Objectives: This study was conducted to evaluate the effect of ethanolic extract of propolis on antibacterial and microshear bond strength of glass ionomer restorations to dentin.

Materials And Methods: Conventional glass ionomer cement (Equia forte, GC Tokyo, Japan), resin-modified glass ionomer (Fuji II LC, GC Tokyo, Japan) and propolis powder (dried extract from honey bees) materials were used in this study. Both conventional glass ionomer and resin-modified glass ionomer were modified by two different concentrations of ethanolic extract of propolis (10 % and 25 % EEP).

Brevibacillus DesertYSK and Rhizobium MAP7 stimulate the growth and pigmentation of Lactuca sativa L.

Background: Applying microbial biostimulants during crop cultivation allows for higher sustainability levels. It reduces the need for fertilizers and environmental contaminants while enhancing plant quality. This study assessed 13 endophytic bacteria, 4 newly isolated, and 9 donated, for plant growth-promoting capabilities.

Arbuscular Mycorrhizal Fungus "Rhizophagus irregularis" impacts on physiological and biochemical responses of ryegrass and chickpea plants under beryllium stress.

Heavy metals such as beryllium (Be) have been identified as toxic for plants with a negative impact on plant growth. Therefore, there is an urgent need for environmentally friendly techniques to reduce Be toxicity on plant growth and productivity. To this end, arbuscular mycorrhizal fungi (AMF) are widely applied to induce plant growth and stress tolerance.

Isolated Respiratory Failure as a Presentation for Early Perinuclear Antineutrophil Cytoplasmic Antibody-Associated Vasculitis.

Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis is an autoimmune inflammatory disease that usually affects the small-sized vasculature, most notably of the lungs and kidneys. One of the challenges of suspecting and diagnosing the condition lies in the insidious and unclear symptoms of presentation. In this case report, we discuss the case of a patient who initially presented with solely unclear pulmonary symptoms, without other organ system dysfunction.

Successful Utilization of Life-saving Extra-Corporeal CO2 Removal in Catastrophic Status Asthmaticus: A Case Report.

Acute asthma exacerbations can be severe and life-threatening. In some cases, standard interventions and management do not result in reversal of bronchoconstriction. It is crucial to detect patients with impending respiratory failure and escalate management to invasive mechanical ventilatory support and, in refractory cases, interventions like extracorporeal membrane oxygenation (ECMO).

Colonic Actinomycosis Presenting One Year After Partial Sigmoid Colectomy.

Actinomycetes are commensal inhabitants of the oral cavity and gastrointestinal tract that can acquire pathogenicity through invasion of injured mucosa. Appendix and ileocecal regions are the most common sites involved in abdominal actinomycosis. We report a case of unusual site actinomycosis, in the recto-sigmoid colon, presenting with abdominal pain and diarrhea after one year of partial sigmoid colectomy.

Growth Optimization and Secondary Metabolites Evaluation of for Acetylcholinesterase Inhibition Activity.

Cyanobacteria comprise a good natural resource of a potential variety of neuro-chemicals, including acetylcholinesterase inhibitors essential for Alzheimer's disease treatment. Accordingly, eight different cyanobacterial species were isolated, identified, and evaluated on their growth on different standard nutrient media. It was found that the modified medium supported the highest growth of the test cyanobacteria.

Serratia marcescens Endocarditis.

Infective endocarditis (IE) secondary to and streptococcus species comprises the majority of cases in literature with Gram negative bacterial insults occurring infrequently. is a Gram negative bacillus which is classified as motile, non-lactose fermenting, and a facultative anerobe. The presumed risk factor for the development of IE is intravenous drug use (IVDU).

An Atypical Presentation of Severe Dissecting Aortic Aneurysm: A Case Report and Literature Review.

A 55-year-old male patient with no past medical history presents to the ED to complain of exertional dyspnea and bilateral lower limb swelling. The patient was diagnosed with a severe dissecting aortic aneurysm on trans-thoracic echocardiography and later confirmed by a contrast CT aortogram. The patient was immediately started on anti-impulse therapy with labetalol infusion and underwent emergent aortic dissection repair.

A rare report of Rothia dentocariosa endocarditis.

Rothia species are gram positive, round to rod-shaped bacteria that are normally oral and respiratory tract flora. They were first isolated in 1967 from dental caries. We present a 69-year-old male with no risk factors for aforementioned bacteria however was found to have thickened anterior leaflet of the mitral valve with a small isoechoic lesion consistent with vegetation on Transthoracic echocardiogram.

A Young COVID-19-Positive Male Patient Presented With Bilateral Pulmonary Emboli and Multiple Strokes.

COVID-19 has been repeatedly related to a variety of extra-pulmonary manifestations since its emergence. COVID-19-positive patients have been shown to develop neurological deficits, deep venous thrombosis, acute kidney injury, acute hepatic injury, and myocarditis, among other conditions. The mechanism of some of these injuries remains unclear, but one factor that has been revealed is hypercoagulability.

A Rare Case Report of Herbal Medication Induced Pancreatitis.

Acute pancreatitis is an acute inflammation of the pancreas that varies in clinical manifestation from mild to life-threatening that may require hospitalization. A 56-year-old male patient with a past medical history of diabetes mellitus and osteoarthritis developed acute pancreatitis likely secondary to the use of herbal medication intended for weight loss. Other causes of pancreatitis were excluded.

Meta-analysis of Safety and Efficacy of Anticoagulation versus no Anticoagulation in Octogenarians and Nonagenarians with Atrial Fibrillation.

Introduction: The role of anticoagulation in octogenarians and nonagenarians with atrial fibrillation (AF) is controversial due to the lack of evidence from randomized controlled trials (RCTs), owing to the under representation of these patients in clinical trials.

Aim: In the present meta-analysis we aim at comparing the clinical benefits and risk of anticoagulation (AC) with no AC in octogenarians and nonagenarians.

Methods: We systematically searched MEDLINE/PubMed, EMBASE/Ovid, and Web of Science databases from the inception to October, 2020.

Unfortunate Outcomes in Patients With SARS-CoV-2 Superimposed on Pneumococcal Pneumonia.

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the disease it causes, coronavirus disease 2019 (COVID-19), continue to have socioeconomic as well as health implications worldwide. The virus has already led to over 200,000 deaths in the United States alone. This is most likely secondary to quick respiratory deterioration seen in patients inflicted with the virus.

Proposed Orbital Products for Positioning Using Mega-Constellation LEO Satellites.

With thousands of low Earth orbit (LEO) satellites to be launched in the near future, LEO mega-constellations are supposed to significantly change the positioning and navigation service for ground users. The goal of this contribution is to suggest and discuss the feasibility of possible procedures to generate the LEO orbital products at two accuracy levels to facilitate different positioning methods-i.e.

L. Shrubs Provide Species-Specific Facilitation for the Understory Plants in Coastal Ecosystem.

Plant facilitation has a pivotal role in regulating species coexistence, particularly under arid environments. The present study aimed to evaluate the facilitative effect of L. on its understory plants in coastal habitat.

Biological leaching of rare earth elements.

The distinctive physico-chemical features of rare earth elements (REEs) have led to an increase in demand by the global market due to their multiple uses in industrial, medical and agricultural implementations. However, the scarcity of REEs and the harsh eco-unfriendly leaching processes from primary sources beside obliviousness to their recycling from secondary sources, together with the geopolitical situation, have created the need to develop a more sustainable mining strategy. Therefore, there is a growing interest in bio-hydrometallurgy, which may contribute to the scavenging of these strategic elements from low-grade resources in an environmentally friendly and economically feasible way as with copper and gold.

Mortality and Morbidity in Office-Based General Anesthesia for Dentistry in Ontario.

Our objective was to estimate the prevalence of mortality and serious morbidity for office-based deep sedation and general anesthesia (DS/GA) for dentistry in Ontario from 1996 to 2015. Data were collected retrospectively in 2 phases. Phase I involved the review of incidents, and phase II involved a survey of DS/GA providers.

A GPS Spoofing Generator Using an Open Sourced Vector Tracking-Based Receiver.

Spoofing can seriously threaten the use of the Global Positioning System (GPS) in critical applications such as positioning and navigation of autonomous vehicles. Research into spoofing generation will contribute to assessment of the threat of possible spoofing attacks and help in the development of anti-spoofing methods. However, the recent commercial off-the-shelf (COTS) spoofing generators are expensive and the technology implementation is complicated.

Characterization of Aspergillus niger siderophore that mediates bioleaching of rare earth elements from phosphorites.

Siderophores are extra-cellular inducible compounds produced by aerobic microorganisms and plants to overcome iron insolubility via its chelation and then uptake inside the cell. This work aims to study the characteristics of siderophore that is produced by a rhizosphere-inhabiting fungus. This fungus has been morphologically and molecularly identified as Aspergillus niger with the ability to produce 87% siderophore units.

Bioprocess enhancement of feather degradation using alkaliphilic microbial mixture.

1. The main aim of this work is to develop a robust method to generate a microbial mixture which can successfully degrade poultry feathers to overcome environmental problems. 2.

Novel molecular triggers underlie valproate-induced liver injury and its alleviation by the omega-3 fatty acid DHA: role of inflammation and apoptosis.

Background/aim: Hepatic injury is a hallmark adverse reaction to Valproate (VPA), a common used drug in the management of numerous CNS disorders, including epilepsy. DHA has a myriad of health benefits, including renal- and hepato-protective effects. Unfortunately, however, the underpinnings of such liver-pertinent VPA- and DHA-actions remain largely undefined.