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Vochysia haenkeana extract (Vh-E) was assessed against the neuromuscular blockade induced by Bothrops jararaca venom on chick biventer cervicis (BC) preparation. Pre- and post-venom incubation treatments (Pre-vit and Post-vit) were analysed here. Contractures ACh (110 µM) and KCl (20 mM) were evoked before and after addition of venom without stimulation. Vh-E (600 µg/mL) under Pre-vit was more efficient to neutralize the neuromuscular blockade by venom (40 µg/mL) [72.5±4.6% (venom) vs. 45.2±14% (Vh-E) of blockade, p<0.05, n=4]. Vh-E (600 µg/mL) did not cause significant changes under Post-vit [72.5±4.6% (venom) vs. 63.4±8.2% (Vh-E) of blockade, n=4]. The Pre-vit inhibited the blockade of the contracture to ACh (106±17% of response; n=4) while the Post-vit was able to attenuate the effect of the venom on this contracture (55±5% of response; n=4); related to those contractures to KCl both of treatments with Vh-E attenuated the blocker effect of the venom (62.5±7.7% and 55±5% of response for Pre-vit and Post-vit, respectively; n=4). In conclusion, Vh-E neutralizes partially the neuromuscular blockade in Pre-vit, an effect that can be related to preserved function of “extrinsic” post-synaptic receptors, by measured contractures in response to ACh. The myotoxicity of the venom was significantly reduced by Vh-E in both, Pre-vit and Post-vit, by measured contractures in response to KCl.

Hepatitis B virus (HBV) is one of the world’s major infectious diseases with 350 million people who are chronic carriers of HBV [1]. Significant minorities go on to develop liver cirrhosis or hepatocellular carcinoma and over 1 million die annually from HBV-diseased liver. Janahi E. at faculty of science, Bahrain University, Bahrain has submitted the following information [2], on HBV-genome organization as part of his Ph.D. degree (2007) in Imperial College, England. HBV genomic organization has 4 Open Reading Frames (ORFs) i.e. Pre-S/S Gene, Pre-C/C ORF, P ORF and X ORF. Regulatory Elements has 4 promoters (pre S2, pre S1, C promoters and X promoters), Pregenomic RNA, Enhancers (Enh 1 and Enh 2) where they are involved in cccDNA formation, Glococorticoid-Responsive Element which is located in X ORF and P ORF overlapping, Polyadenylation Signal (Direct Repeat 1 (DR1) and Direct Repeat 2 (DR2)), Epsilon-Stem Loop and Post-Transcriptional Regulatory Element. HBV genotype D is prevalent in our Middle East area. The HBV genome is a partially relaxed-circular dsDNA molecule consisting of a full length strand (minus strand) with a single unique nick and a complementary (positive strand) of variable length. HBV is considered as a para-retrovirus because its replication involves the reverse transcription of an intermediate-RNA function, of pre-genomic RNA (pgRNA). Replication of HBV genome starts with the encapsidation of the pgRNA and encodes HBV polymerase into an immature nucleocapsid formed by the viral core antigen.

Polyamines are aliphatic amines found in all living cells, and they are necessary for several fundamental cell processes. Their protective role against various abiotic stress factors has been reported in different plant species, while the mechanism by which polyamines act during plant-microbe interaction is still poorly understood. The several types of the interactions between the plants and the microbes outline a divers and complex picture of the action mechanisms. The present review focuses on this aspect of the mode of action of polyamines and polyamine metabolism during biotroph and necrotroph interactions between plants and pathogens. It seems that apoplastic metabolism of polyamines of the host and the accumulation of H2O2 as a result of polyamine catabolism play important signalling role in plant-pathogen interactions. The manipulation of the members of the polyamine-induced signalling pathways could increase the host plant resistance to biotic stresses.

This study comparatively evaluated the analytical performance of the Erba H7100 hematology analyzer against the Siemens Advia 2120i and Beckman Coulter DXH 900, using 243 patient samples. The study assessed the agreement and linear relationship across 14 key hematological parameters in whole blood, employing statistical methods that included mean bias, standard deviation of the difference, Pearson’s correlation, and coefficient of determination. Additionally, reticulocyte counts were analyzed in 27 samples for Erba H7100 vs. Advia 2120i and 53 samples for Erba H7100 vs. DXH 900, revealing exceptional agreement with high Pearson’s r and r-squared values. The performance of the Erba H7100 and DXH 900 in analyzing ascitic, cerebrospinal, and bronchial wash fluids was also evaluated. Notably, the Advia 2120i analyzer exhibited discrepancies in mean corpuscular volume (MCV) and monocyte counts (Mon#). Conversely, the Erba H7100 showed better agreement with the DXH 900 for MCV and Mon# in whole blood. In fluid samples, Erba H7100 and DXH 900 demonstrated a strong correlation with Microscopy in determining Neutrophil % and Lymphocyte % values. Strong linear correlations were observed for most parameters in whole blood, with reticulocyte counts showing near-perfect correlation. This study underscores the importance of rigorous validation and potential platform-specific reference intervals to ensure accurate and reliable hematological testing, emphasizing the need for standardized methodologies in clinical laboratories.

Pushing forward with leveraging water resources, promoting international cooperation, and ensuring transparency in deep-sea mining operations. There is also a concern about where to discharge the toxins of unpurified water. Artificial Intelligence has created a dominance in the applications field with a totally automated system.Out of a thorough analysis completed with indicators, satellite radar, and A Journals, there are 30 years of research and 8 years of monitored testing to achieve accuracy and relevance. The patents in place are, Oceanic Mining System (4446636), Flexible Solar Skin in Combination with an Airplane (4768738), Cargo Torpedo (4421050), Oceanic seaplow system (4398362), and previous articles like “Is Extracting Lithium and deep-sea mining more sustainable?”, “AI as a Means of Water Purification Protection”, “Global Water Distribution”, and “Can Deep Sea Water be Processed into Potable Water and Distributed into the Middle East’?To report some ballpark numbers on the proposal and how we would navigate these projects, there will be an exact location of where the plant will be built as well as a water/salinity report of the water being treated. There are still issues with analyzing the cost of desalination compared to other alternatives. Deep Sea Water proves to be a higher quality water and the investment is well worth it. The surveys lean toward clients preferring the International Standards Operating Procedure. All recipients agree there should be a sense of urgency on water shortages. Currently, AI has proven to be a vital asset in eliminating biases and expenses.

A field study was carried out to evaluate the efficacy of pendimethalin 500 EC (trade name: Pendimight®) and oxyfluorfen 240 EC (trade name: Harris®) to control weeds in direct-seeded onion (Allium cepa L.). Pendimethalin and oxyfluorfen were applied solely at reduced rates (1.35 and 0.17 kg a.i. ha-1), and at the recommended rates (1.8 and 0.25 kg a.i. ha-1) as pre-and post-emergence herbicides, respectively. Both herbicides were also applied sequentially at the same doses. Ten weeks after sowing (WAS), the application of pendimethalin alone provided better weed control (62% - 65%) than oxyfluorfen alone (33% - 43%) when they were applied at the lower and recommended rates, respectively. Sequential applications of the two herbicides as pre-and post-emergence herbicides, outperformed applications of the two herbicides alone, and resulted in the best weed control (79% to 85%), lowest weed dry weight (18.35 to 35.60 g.m-2), significantly increased plant height and the number of leaves per plant, and resulted in a ten-fold higher onion yield (24.64 to 26.37 t. ha-1) compared with the Un-weeded control (2.27 t. ha-1). There were no significant differences observed between the treatments on the emergence (%) of onion seeds and the survival of onion seedlings. Sequential applications of pendimethalin and oxyfluorfen is a promising techniques for weed control in direct-seeded onions in Sudan.

Aim: This study aims to determine the current status for estimation of radiation dose to blood vessels and components from medical imaging procedures.Methodology: A database search on internet via PubMed and Google Scholar was performed to find published papers in estimation of radiation dose to blood vessels and components from medical imaging procedures. Results: Few published papers were found; namely two published papers. Radiation dose to blood vessels and components were assumed to be included in total radiation dose estimation for organ or tissue, without considering different in radiosensitivity. Conclusion: It seems that effect of radiation on blood vessels and components is underestimated, in ICRP 60 and 103 recommendations reports. Recommendation: It is recommended to conduct more studies to estimate radiation dose for blood vessels and components from medical imaging procedures and revise the value of tissue weighting factor for bone marrow.

This article provides a comprehensive overview of the properties, applications, and fabrication techniques of nanofibers, which are characterized by their ultrafine diameters and unique features such as high surface area and aspect ratio. These attributes render nanofibers particularly advantageous for a wide range of applications, especially in the biomedical sector, encompassing areas like tissue engineering, drug delivery, and wound dressing. The article highlights various studies that illustrate the potential of nanofibers in addressing healthcare challenges, particularly their utilization in scaffolds for regenerative medicine and as carriers for controlled drug delivery. Furthermore, it discusses different preparation methods for nanofibers, including electrospinning and alternative techniques, while stressing the importance of polymer selection in achieving optimal drug-release properties. The article also delves into the application of nanofibers in tissue engineering, specifically for bone, cartilage, and vascular applications, and examines their emerging roles in organ-on-a-chip technology and contraceptive development. In conclusion, the article emphasizes the versatility and significance of nanofibers in advancing medical technologies and their potential to address contemporary health challenges. Collaborative efforts between material scientists and biologists are essential to foster interdisciplinary research aimed at improving electrospinning methodologies.

The most prevalent monogenic blood illness is sickle cell disease (SCD), which affects millions of people globally and around 100,000 Americans.

Background: Allergic rhinitis (AR) affects approximately 10% - 30% of the global population and represents a significant healthcare burden. The condition involves complex inflammatory pathways where oxidative stress plays a crucial role, with malondialdehyde serving as a key biomarker of cellular damage. Quercetin, a naturally occurring flavonoid, demonstrates promising antioxidant and anti-inflammatory properties that may benefit allergic rhinitis management.Methods: We conducted a systematic review following PRISMA 2020 guidelines. Four electronic databases (PubMed, Google Scholar, SagePub, and Semantic Scholar) were searched for studies published between 2000 and 2024. The PICO framework guided study selection, focusing on quercetin intervention in allergic rhinitis models. Both preclinical and clinical studies measuring malondialdehyde levels or clinical symptom improvement were included.Results: Eighteen studies met our inclusion criteria, comprising 14 animal studies and four human clinical trials. Preclinical evidence consistently demonstrated quercetin’s ability to reduce malondialdehyde levels across various tissues, including serum, lung, and liver samples. Human studies showed superior symptom improvement when quercetin-containing supplements were added to standard therapy compared to conventional treatment alone.The primary mechanism involves nuclear factor erythroid 2-related factor 2 pathway activation, enhancing endogenous antioxidant enzyme production.Conclusion: Current evidence supports quercetin’s effectiveness in reducing oxidative stress and improving clinical outcomes in allergic rhinitis through dual antioxidant and anti-inflammatory mechanisms. While most evidence derives from animal studies, quercetin Shows promise as safe adjuvant therapy. Large-scale human clinical trials using high- high-bioavailability formulations are needed to establish standardized clinical protocols.Key messages:•    Quercetin consistently reduces oxidative stress markers in allergic rhinitis models.•    Clinical symptoms improve significantly when quercetin supplements are added to standard therapy.•    The therapeutic mechanism involves both direct antioxidant activity and endogenous defense system enhancement.•    High-quality human clinical trials are needed to establish definitive treatment guidelines.