Advances in high-throughput screening approaches for biosurfactants: current trends, bottlenecks and perspectives.

The market size of biosurfactants (BSs) has been expanding at an extremely fast pace due to their broad application scope. Therefore, the re-construction of cell factories with modified genomic and metabolic profiles for desired industrial performance has been an intriguing aspect. Typical mutagenesis approaches generate huge mutant libraries, whereas a battery of specific, robust, and cost-effective high-throughput screening (HTS) methods is requisite to screen target strains for desired phenotypes. So far, only a few specialized HTS assays have been developed for BSs that were successfully applied to obtain anticipated mutants. The most important milestones to reach, however, continue to be: specificity, sensitivity, throughput, and the potential for automation. Here, we discuss important colorimetric and fluorometric HTS approaches for possible intervention on automated HTS platforms. Moreover, we explain current bottlenecks in developing specialized HTS platforms for screening high-yielding producers and discuss possible perspectives for addressing such challenges.

Bacillus altitudinis AD13-4 Enhances Saline-Alkali Stress Tolerance of Alfalfa and Affects Composition of Rhizosphere Soil Microbial Community.

Saline and alkaline stresses limit plant growth and reduce crop yield. Soil salinization and alkalization seriously threaten the sustainable development of agriculture and the virtuous cycle of ecology. Biofertilizers made from plant growth-promoting rhizobacteria (PGPR) not only enhance plant growth and stress tolerance, but also are environmentally friendly and cost-effective. There have been many studies on the mechanisms underlying PGPRs enhancing plant salt resistance. However, there is limited knowledge about the interaction between PGPR and plants under alkaline-sodic stress. To clarify the mechanisms underlying PGPR's improvement of plants' tolerance to alkaline-sodic stress, we screened PGPR from the rhizosphere microorganisms of local plants growing in alkaline-sodic land and selected an efficient strain, Bacillus altitudinis AD13-4, as the research object. Our results indicate that the strain AD13-4 can produce various growth-promoting substances to regulate plant endogenous hormone levels, cell division and differentiation, photosynthesis, antioxidant capacity, etc. Transcriptome analysis revealed that the strain AD13-4 significantly affected metabolism and secondary metabolism, signal transduction, photosynthesis, redox processes, and plant-pathogen interactions. Under alkaline-sodic conditions, inoculation of the strain AD13-4 significantly improved plant biomass and the contents of metabolites (e.g., soluble proteins and sugars) as well as secondary metabolites (e.g., phenols, flavonoids, and terpenoids). The 16S rRNA gene sequencing results indicated that the strain AD13-4 significantly affected the abundance and composition of the rhizospheric microbiota and improved soil activities and physiochemical properties. Our study provides theoretical support for the optimization of saline-alkali-tolerant PGPR and valuable information for elucidating the mechanism of plant alkaline-sodic tolerance.

Evaluation of di-rhamnolipid biosurfactants production by a novel Pseudomonas sp. S1WB: Optimization, characterization and effect on petroleum-hydrocarbon degradation.

Rhamnolipid biosurfactants are multifunctional compounds that can play an indispensable role in biotechnological, biomedical, and environmental bioremediation-related fields, and have attracted significant attention in recent years. Herein, a novel strain Pseudomonas sp. S1WB was isolated from an oil-contaminated water sample. The biosurfactants produced by this strain have capabilities to reduce surface tension (SFT) at 32.75 ± 1.63 mN/m and emulsified 50.2 ± 1.13 % in liquid media containing 1 % used engine oil (UEO) as the sole carbon source. However, the lowest SFT reduction (28.25 ± 0.21), highest emulsification index (60.15 ± 0.07), and the maximum yields (900 mg/L) were achieved under optimized conditions; where, the glucose/urea and glycerol/urea combinations were found efficient carbon and nitrogen substrates for improved biosurfactants production. Biosurfactants product was characterized using ultra-high performance liquid chromatography-mass spectrometry (UHPLC- MS) and detected various di- rhamnolipids congeners. In addition, the di-rhamnolipids produced by S1WB strain was found highly stable in terms of surface activity and EI indices at different environmental factors i.e. temperature, pH and various NaCl concentrations, where, emulsifying property was found high stable till 30 days of incubation. Moreover, the stain was capable to degrade hydrocarbon at 42.2 ± 0.04 %, and the Gas chromatography- mass spectrometry (GC-MS) profile showed the majority of peak intensities of hydrocarbons have been completely degraded compared to control.

AP2/ERF, an important cold stress-related transcription factor family in plants: A review.

Increasing the vulnerability of plants especially crops to a wide range of cold stress reduces plant growth, development, yield production, and plant distribution. Cold stress induces physiological, morphological, biochemical, phenotypic, and molecular changes in plants. Transcription factor (TF) is one of the most important regulators that mediate gene expression. TF is activated by the signal transduction pathway, together with cis-acting element modulate the transcription of cold-responsive genes which contribute to increasing cold tolerance in plants. Here, AP2/ERF TF family is one of the most important cold stress-related TF families that along with other TF families, such as WRKY, bHLH, bZIP, MYB, NAC, and C2H2 interrelate to enhance cold stress tolerance. Over the past decade, significant progress has been found to solve the role of transcription factors (TFs) in improving cold tolerance in plants, such as omics analysis. Furthermore, numerous studies have identified and characterized the complexity of cold stress mechanisms among TFs or between TFs and other factors (endogenous and exogenous) including phytohormones, eugenol, and light. The role, function, and relationship among these TFs or between TFs and other factors to enhance cold tolerance still need to be clarified. Here, the current study analysed the role of AP2/ERF TF and the linkages among AP2/ERF with MYB, WRKY, bZIP, bHLH, C2H2, or NAC against cold stress tolerance.

Nanotechnology interventions in aquaculture and seafood preservation.

The inclusion of nanotechnologies in aquaculture and seafood preservation confronts a new edge that deserves attention in the recent trends of global food sector. Nanotechnology, being a novel and innovative approach has paved way to open up new perspective for the analysis of biomolecules, targeted drug delivery, protein or cells, clinical diagnosis, development of non-viral vectors for gene therapy, as transport vehicle for DNA, disease therapeutics etc. The current and potential use of nanotechnology would show the way to progression of smart and high performing fish. The comparative evaluation of extremely sophisticated nanotechnology with conventional process engineering proposes new prospectus in technological developments for superior water and wastewater technology processes. Nanoparticles have comprehensive advantages for management of drugs as liberation of vaccines and therefore hold the assurance for civilized protection of farmed fish against disease-causing pathogens. This review article explores the present concerns of food security, climate change as well as sustainability that are explored by the researchers in the area of nanotechnology, development of marine produce, along with its preservation and aquaculture.

Current Management of Malignant Colorectal Polyps Across a Regional United Kingdom Cancer Network.

BACKGROUND: The incidence of malignant colorectal polyps has increased secondary to the greater use of diagnostic colonoscopy and introduction of screening programs. Faced with the dilemma of whether major resection is required or whether polypectomy has been sufficient treatment, the clinician relies on high- and low-risk histological parameters to guide decision-making. OBJECTIVE: The purpose of this study was to review current practice and evaluate multidisciplinary team decision-making across a United Kingdom Regional Cancer Network to establish the efficacy of previously set guidance from the Association of Coloproctology of Great Britain and Ireland (2013). DESIGN: This was a retrospective cohort study. SETTINGS: The study was conducted at a United Kingdom Regional Cancer Network composed of 4 separate National Health Service Hospital Trusts, covering an overall population of 1.5 million. PATIENTS: All patients with malignant colorectal polyps who presented to the colorectal multidisciplinary team over a 3-year period (April 1, 2012 to April 1, 2015) were included. MAIN OUTCOME MEASURES: Rate of residual disease after major resection, recurrence of cancer after polypectomy and surveillance alone, reporting of histological features, adherence to endoscopic surveillance guidelines, and outcomes of surveillance cross-sectional imaging were measured. RESULTS: A total of 173 patients (median age = 69 y) with a malignant colorectal polyp were identified during the study period, with a median of 2.7 years of follow-up. Thirty-seven patients (21.4%) underwent primary surgical resection with a residual disease rate of 43% (16/37). The remaining 136 patients (76.8%) were managed conservatively with recurrence in 6 cases (4.4%). Endoscopic follow-up at 3 months occurred in 61% of cases. Histological reporting was varied, with tumor differentiation and resection margin being reported in 84% of cases and lymphovascular invasion and depth of invasion in 71% and 59% of cases, respectively. LIMITATIONS: This was an observational retrospective study. CONCLUSIONS: The residual disease rate in patients treated surgically was higher than previously reported (43.2%). Incidence of recurrence in patients treated conservatively was low (4.4%). Areas of improvements have been identified in adherence to endoscopic follow-up, histopathological reporting, and potential overuse of radiological surveillance. See Video Abstract at http://links.lww.com/DCR/B47. MANEJO ACTUAL DE PÓLIPOS COLORRECTALES MALIGNOS A TRAVÉS DE UNA RED REGIONAL DE CÁNCER DEL REINO UNIDO: La incidencia de pólipos colorrectales malignos ha aumentado secundariamente al mayor uso de la colonoscopia diagnóstica y a la introducción de programas de detección. Ante el dilema de si se requiere una resección mayor o si la polipectomía ha sido un tratamiento suficiente, el médico se basa en parámetros histológicos de alto y bajo riesgo, para guiarse en la toma de decisiones.Revisar la práctica actual y evaluar la toma de decisiones, del equipo multidisciplinario de una red regional de cáncer del Reino Unido, para establecer la eficacia de las recomendaciones previamente establecidas, por la Asociación de Coloproctología de la Gran Bretaña e Irlanda (2013).Estudio de cohorte retrospectivo.Red Regional del Cáncer del Reino Unido, que comprende cuatro Fideicomisos Hospitalarios del Servicio Nacional de Salud y que cubren una población general de 1,5 millones de personas.Todos los pacientes con pólipos colorrectales malignos presentados al equipo colorrectal multidisciplinario durante un período de 3 años (01/04/2012-01/04/2015).Tasa de enfermedad residual después de una resección mayor, recurrencia de cáncer después de polipectomía y vigilancia sola, informe de características histológicas, adherencia a directrices de vigilancia endoscópica y resultados de la vigilancia de la imagen transversal.Se identificaron un total de 173 pacientes (mediana de edad de 69 años) con pólipo colorrectal maligno durante el período de estudio, con una mediana de seguimiento de 2.7 años. 37 pacientes (21,4%) fueron sometidos a resección quirúrgica primaria con tasa de enfermedad residual del 43% (16/37). Los 136 pacientes restantes (76.8%) fueron manejados conservadoramente, con recurrencia en 6 casos (4.4%). El seguimiento endoscópico a los 3 meses, ocurrió en el 61% de los casos. El reporte histológico varió con la diferenciación tumoral. El margen de resección se informó en el 84% de los casos. La invasión linfovascular y la profundidad de la invasión fue del 71% y 59% de los casos.Estudio observacional retrospectivo.La tasa de enfermedad residual en pacientes tratados quirúrgicamente, fue más alta que la reportada previamente (43.2%). La incidencia de recurrencia en pacientes tratados de forma conservadora fue baja (4,4%). Se han identificado áreas de mejoras en cumplimiento del seguimiento endoscópico, informe histopatológico y el posible uso excesivo de la vigilancia radiológica. Vea el Resumen del Video en http://links.lww.com/DCR/B47.

Production and characterization of surfactin-like biosurfactant produced by novel strain Bacillus nealsonii S2MT and it's potential for oil contaminated soil remediation.

BACKGROUND: Biosurfactants, being highly biodegradable, ecofriendly and multifunctional compounds have wide applications in various industrial sectors including environmental bioremediation. Surfactin, a member of lipopeptide family, which is considered as one of the most powerful biosurfactants due to its excellent emulsifying activities as well as environmental and therapeutic applications. Therefore, the aim of this study was to investigate the newly isolated bacterial strain S2MT for production of surfactin-like biosurfactants and their potential applications for oil-contaminated soil remediation. RESULTS: In this study, the strain S2MT was isolated from lake sediment and was identified as Bacillus nealsonii based on transmitted electron microscopy (TEM) and 16S rRNA ribo-typing. The strain S2MT produced biosurfactant that reduced the surface tension (34.15 ± 0.6 mN/m) and displayed excellent emulsifying potential for kerosene (55 ± 0.3%). Additionally, the maximum biosurfactant product yield of 1300 mg/L was achieved when the composition of the culture medium was optimized through response surface methodology (RSM). Results showed that 2% glycerol and 0.1% NH4NO3 were the best carbon/nitrogen substrates for biosurfactant production. The parameters such as temperature (30 °C), pH (8), agitation (100 rpm), NH4NO3 (0.1%) and NaCl (0.5%) displayed most significant contribution towards surface tension reduction that resulted in enhanced biosurfactant yield. Moreover, the extracted biosurfactants were found to be highly stable at environmental factors such as salinity, pH and temperature variations. The biosurfactants were characterized as cyclic lipopeptides relating to surfactin-like isoforms (C13-C15) using thin-layer chromatography (TLC), Ultra high performance liquid chromatography and mass spectrometry (UHPLC-MS). The crude biosurfactant product displayed up to 43.6 ± 0.08% and 46.7 ± 0.01% remediation of heavy engine-oil contaminated soil at 10 and 40 mg/L concentrations, respectively. CONCLUSION: Present study expands the paradigm of surfactin-like biosurfactants produced by novel isolate Bacillus nealsonii S2MT for achieving efficient and environmentally acceptable soil remediation as compared to synthetic surfactants.

Epithelioid Hemangioendothelioma of the Ulnar Artery Presenting with Neuropathy.

We present a rare case of epithelioid hemangioendothelioma arising from the wall of ulnar artery in distal forearm. The presentation was interesting in a 34-year-old man, with progressively worsening symptoms of ulnar neuropathy. A mass was seen arising from the ulnar artery on imaging with ultrasound and magnetic resonance imaging. Soft tissue epithelioid hemangioendothelioma in extremities almost always arise from the veins. Existing literature do not have elaborated imaging findings of epithelioid hemangioendothelioma arising from the arterial wall. The aim of this paper is to briefly review the interesting presentation and imaging features of this rare entity. Knowledge of such vascular tumor would avoid the mishap during surgery. Our case will add an interesting presentation of such rare pathology to the existing literature.

Enhanced Oil Recovery by Potential Biosurfactant-Producing Halo-thermotolerant Bacteria Using Soil Washing and Sand-Packed Glass Column Techniques.

Biosurfactants offer numerous advantages over the chemical surfactants, especially in energy and environment-related applications. Microbial enhanced oil recovery (MEOR) is a technique to recover oil from reservoirs by using microbes and their metabolites. In present study, total sixteen morphologically distinct bacterial strains isolated from different salty areas of the district Khairpur Mir's, Pakistan, were investigated for their MEOR potential. Screening assays for thermotolerance and halotolerance declared 7 out of 16 (43.75%) bacterial isolates as thermotolerant (capable of growing in the temperature range 60-70 °C) and halotolerant (tolerating NaCl concentrations up to 17%, w/v). Moreover, five of them were screened as biosurfactant producers. Among, the lowest surface tension reduction was achieved with biosurfactants produced by the strains KJ2MO (27.8 mN/m) and KJ2SK (29.3 mN/m). The biosurfactant activity was found stable at temperature (100-121 °C, 1 h) and pH (4-10). Moreover, maximum oil recovery was obtained with biosurfactant of bacterial strain KJ2MO (54.7%, 51.25%) followed by KJ2SK (44.7%, 40.5%), KJ1WB (37%, 35.5%) and KJ2MD (37.8%, 31.9%) by using either techniques, i.e., soil washing and sand-packed column, respectively. Moreover, the potent species were identified as Pseudomonas pseudoalcaligenes KJ1WB, Bacillus aerius KJ2MD, Bacillus licheniformis KJ2SK, and Bacillus subtilis KJ2MO using 16S rRNA ribo-typing. The investigated species were found to be promising biosurfactants producers having potential for enhanced oil recovery and could be used in other environmental applications like bioremediation.

Antioxidant Enzyme Activities and Lipid Oxidation in Rape (Brassica campestris L.) Bee Pollen Added to Salami during Processing.

The present research investigated the antioxidant effect of rape (Brassica campestris L.) bee pollen (RBP) on salami during processing. Eight flavonoids in RBP ethanol extract were quantified by high-performance liquid chromatography-mass spectrometry (HPLC-MS) analysis, and quercetin, rutin, and kaempferol were the major bioactive compounds. The RBP ethanol extract exhibited higher total antioxidant capacity than 6-hydroxy-2,5,7,8-tertramethylchromancarboxylic acid (trolox) at the same concentration. The salami with 0.05% RBP extract had higher catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) activities than that of the control throughout the processing time (p < 0.05). Significant decreases in peroxide value (POV) and thiobarbituric acid-reactive substances (TBARS) were obtained in the final salami product with 0.05% RBP ethanol extract or 1% RBP (p < 0.05). These results suggested that RBP could improve oxidative stability and had a good potential as a natural antioxidant for retarding lipid oxidation.

Inhibitory Effect of Rosa rugosa Tea Extract on the Formation of Heterocyclic Amines in Meat Patties at Different Temperatures.

In previous studies, heterocyclic amines (HCAs) have been identified as carcinogenic and a risk factor for human cancer. Therefore, the present study was designed to identify bioactive natural products capable of controlling the formation of HCAs during cooking. For this purpose we have evaluated the effect of Rosa rugosa tea extract (RTE) on the formation of HCAs in ground beef patties fried at 160 °C or 220 °C. RTE is rich in phenolic compounds and capable of inhibiting the formation of free radicals. The pyrido[3,4-b]indole (norharman) and 1-methyl-9H-pyrido[3,4-b]indole (harman) contents were significantly (p < 0.05) decreased in RTE-treated patties at 220 °C. 9H-3-Amino-1-methyl-5H-pyrido[4,3-b]indole acetate (Trp-P-2) and 3-amino-1,4-dimethyl-5H-pyrido-[4,3-b]indole acetate (Trp-P-1) were not detected at 160 °C and were statistically (p < 0.01) reduced at 220 °C compared to the control. RTE remarkably inhibited the formation of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) at 220 °C (p < 0.001) and at 160 °C (p < 0.05). 2-Amino-9H-pyrido[2,3-b]indole (AαC) and 2-amino-3-methyl-9H-pyrido[2,3-b]-indole (MeAαC) were only detected in the control group at 160 °C but were comparatively (p > 0.05) similar in the control and treated groups at 220 °C. 2-Amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethylimidazo[4,5-f]quinoline (MeIQ), 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), and 2-amino-3,4,8-trimethylimidazo[4,5-f]-quinoxaline (4,8-DiMeIQx) were not detected in any sample. Total HCAs were positively correlated with cooking loss. In the RTE-treated groups, 75% of the total HCAs were decreased at 160 °C and 46% at 220 °C, suggesting that RTE is effective at both temperatures and can be used during cooking at high temperatures to lessen the amount of HCAs formed.

Endophytic fungi associated with Taxus fuana (West Himalayan Yew) of Pakistan: potential bio-resources for cancer chemopreventive agents.

CONTEXT: Endophytic fungi, being a prolific source of bioactive secondary metabolites, are of great interest for natural product discovery. OBJECTIVE: Isolation and partial characterization of endophytic fungi inhabiting the leaves and woody parts of Taxus fuana Nan Li & R.R. Mill. (Taxaceae) and evaluation of biological activity. MATERIALS AND METHODS: Endophytic fungal isolates were identified by molecular analysis of internal transcribed spacer (ITS) regions of 18S rDNA. Extracts of the endophytic fungi cultured on potato dextrose agar and modified medium were evaluated using cancer chemoprevention bioassays [inhibition of TNF-α-induced NFκB, aromatase and inducible nitric oxide synthase (iNOS); induction of quinone reductase 1 (QR1)] and growth inhibition with MCF-7 cells. RESULTS: Nine of 15 fungal isolates were identified as belonging to Epicoccum, Mucor, Penicillium, Chaetomium, Paraconiothriym, Plectania or Trichoderma. Five of the 15 extracts inhibited NFκB activity (IC50 values ranging between 0.18 and 17 µg/mL) and five inhibited iNOS (IC50 values ranging between 0.32 and 12.9 µg/mL). In the aromatase assay, only two isolates mediated inhibition (IC50 values 12.2 and 10.5 µg/mL). With QR1 induction, three extracts exhibited significant activity (concentrations to double activity values ranging between 0.20 and 5.5 µg/mL), and five extracts inhibited the growth of MCF-7 cells (IC50 values ranging from 0.56 to 17.5 µg/mL). Six active cultures were derived from woody parts of the plant material. CONCLUSION: The endophytic fungi studied are capable of producing pharmacologically active natural compounds. In particular, isolates derived from the wood of Taxus fuana should be prioritized for the isolation and characterization of bioactive constituents.

An Objective Comparison of the Quality and Reliability of Information Regarding Autism Spectrum Disorder on YouTube.

BACKGROUND: YouTube serves as a good source of information on autism; however, the reliability and quality of such content remain uncertain. This study aimed to evaluate the reliability and quality of autism-related information presented in YouTube videos using the Global Quality Score (GQS) and Reliability Score.  Methods: A cross-sectional observational study was conducted in November 2023. A total of 48 autism-related videos on YouTube were sourced using keywords such as 'autism', 'autism cause', 'autism treatment', and 'autism kids'. The authors then viewed the videos and collected data regarding the number of views, likes and comments, uploader type, and type of information disseminated. The authors also used The GQS and modified DISCERN score to assess the quality and reliability of information in the videos. The data was then subjected to statistical analysis using the Kruskal-Wallis test and IBM SPSS Statistics for Windows, Version 22 (Released 2013; IBM Corp., Armonk, New York, United States).  Results: Out of 48 videos, seven videos were excluded, leaving 41 for analysis. The included videos amassed 25,540,635 views, 304,557 likes, and 37,039 comments. The majority of videos were uploaded by hospitals (n=15; 36.59%), followed by news channels (n=12; 29.27%). Most videos described autism symptoms (n=26; 63.41%), with fewer addressing potential etiology (n=16; 39.02%). The median GQS was highest for videos uploaded by healthcare professionals (n=5), contrasting with news channels. The Kruskal-Wallis test revealed significant differences (p=0.02).  Conclusion: These videos collectively garnered substantial viewership, likes, and comments. Most videos described autism symptoms, although fewer addressed potential causes. Notably, videos uploaded by healthcare professionals achieved the highest GQSs, highlighting their significance in disseminating reliable autism information. Healthcare professionals therefore play a crucial role in disseminating reliable autism information via YouTube. Encouraging their involvement in creating informative videos can enhance public understanding of autism.

Biosurfactants-based mixed polycyclic aromatic hydrocarbon degradation: From microbial community structure toward non-targeted metabolomic profile determination.

Biosurfactants-based bioremediation is considered an efficient technology to eliminate environmental pollutants including polycyclic aromatic hydrocarbons (PAHs). However, the precise role of rhamnolipids or lipopeptide-biosurfactants in mixed PAH dissipation, shaping microbial community structure, and influencing metabolomic profile remained unclear. In this study, results showed that the maximum PAH degradation was achieved in lipopeptide-assisted treatment (SPS), where the pyrene and phenanthrene were substantially degraded up to 74.28 % and 63.05 % respectively, as compared to rhamnolipids (SPR) and un-aided biosurfactants (SP). Furthermore, the high throughput sequencing analysis revealed a significant change in the PAH-degrading microbial community, with Proteobacteria being the predominant phylum (>98 %) followed by Bacteroidota and Firmicutes in all the treatments. Moreover, Pseudomonas and Pannonibacter were found as highly potent bacterial genera for mixed PAH degradation in SPR, SPS, and SP treatments, nevertheless, the abundance of the genus Pseudomonas was significantly enhanced (>97 %) in SPR treatment groups. On the other hand, the non-targeted metabolomic profile through UHPLC-MS/MS exhibited a remarkable change in the metabolites of amino acids, carbohydrates, and lipid metabolisms by the input of rhamnolipids or lipopeptide-biosurfactants whereas, the maximum intensities of metabolites (more than two-fold) were observed in SPR treatment. The findings of this study suggested that the aforementioned biosurfactants can play an indispensable role in mixed PAH degradation as well as seek to offer new insights into shifts in PAH-degrading microbial communities and their metabolic function, which can guide the development of more efficient and targeted strategies for complete removal of organic pollutants such as PAH from the contaminated environment.

An impact of l-histidine on the phosphorylation and stability of pyruvate kinase at low NaCl level.

As one of the key rate limiting enzymes in glycolysis process, the characteristics of pyruvate kinase (PK) play an important role in regulating the muscle quality. Given the close relationship between kinase phosphorylation level and its stability, the present study investigated the impact of exogenous l-histidine (l-his) on PK phosphorylation and activity at 1% NaCl level in the early postmortem. An incubation system was also constructed and the results showed that the introduction of 0.06% l-his caused the dephosphorylation and increased the activity of PK at 1% NaCl. Compared with 1% NaCl treatment, three differential phosphorylation sites were produced when l-his was introduced. The PK secondary structure was shift from order to disorder, leading to a distinct degradation. This present study provided us with inspiration that meat quality could be improved by exogenous l-his at early postmortem under low NaCl conditions.

Disparities in the Place of Death for Patients With Malignant Neoplasms of the Thyroid Gland.

Introduction This study aims to examine the disparities in the place of death for patients due to thyroid neoplasms and understand the mortality trends. The study also aims to assess the influence of factors like age, gender, geography, and race, thus allowing for the assessment and improvement of end-of-life and palliative care. Methodology The study analyzes thyroid cancer mortality trends from 1999 to 2020 using the Centers for Disease Control and Prevention Wide-ranging Online Data for Epidemiologic Research (CDC WONDER) database, taking into consideration locations of death, medical facilities, home and hospice care, and others. Additional categories such as race, gender, and U.S. census regions were variables chosen to segregate the deaths. Microsoft Excel (Microsoft Corporation, Redmond, Washington, United States) and autoregressive integrated moving average (ARIMA) modeling were used for data analysis. Results The study revealed that around 50% of thyroid cancer patients in the United States passed away at home or in hospice settings, while the other 50% died in medical facilities or nursing homes. Patients aged 65-74 and 75-84 were more likely to die at home or in hospice, and males had a higher likelihood of dying in these settings compared to females. Geographically, individuals in the South and West regions were more inclined to die at home or in hospice. Additionally, racial disparities were observed, with Black or African Americans being less likely than Whites to die in home or hospice settings. Conclusions Socio-demographic factors play a major role in shaping end-of-life care, underscoring the need for tailored interventions. There is also a need for more refined early diagnostic techniques for smaller, localized tumors. Future studies should investigate the relationship between profession and income and the incidence and mortality of thyroid cancer.

A Rare and Challenging Presentation of Acute Hemorrhagic Leukoencephalitis With Tumefactive Demyelinating Lesions in a 41-Year-Old Male.

Acute hemorrhagic leukoencephalitis (AHLE) is a rare and severe inflammatory condition of the central nervous system (CNS), characterized by hemorrhagic lesions in the brain's white matter. Here, we present a case of AHLE with concurrent tumefactive demyelinating disease, highlighting the diagnostic and management challenges associated with this complex presentation. Tumefactive multiple sclerosis (MS) is a rare variant of MS characterized by large, space-occupying lesions in the CNS. Concurrently, hemorrhagic leukoencephalitis (HLE) represents a severe inflammatory disorder characterized by hemorrhagic lesions within the CNS white matter. The diagnosis of tumefactive MS with associated HLE posed significant diagnostic challenges due to overlapping clinical and radiological features. Management involved high-dose corticosteroid therapy and supportive care measures, with longitudinal follow-up to assess treatment response and prevent complications. The patient exhibited a favorable clinical response to treatment, with gradual improvement in symptoms and resolution of radiological abnormalities. The coexistence of tumefactive MS with HLE is exceptionally rare and presents diagnostic and therapeutic challenges. We report a 41-year-old male presenting with acute neurological symptoms, including severe headache, confusion, left-sided body weakness, slurred speech, and blurred vision. Neurological examination revealed dysarthric speech, right homonymous hemianopia, left upper motor neuron facial palsy, and motor deficits. MRI demonstrated multifocal areas of T2 hyperintensity with associated hemorrhage, suggestive of tumefactive MS with associated HLE. Diagnostic workup included neurological examination, MRI imaging, cerebrospinal fluid analysis, and serological testing. Management involved high-dose corticosteroid therapy and supportive care measures. The patient exhibited a favorable clinical response to treatment, with gradual improvement in symptoms and resolution of radiological abnormalities. Longitudinal follow-up confirmed sustained improvement. In conclusion, the coexistence of tumefactive MS with HLE poses diagnostic challenges due to overlapping features. This case underscores the importance of considering rare and atypical presentations of CNS demyelinating disease and the potential complications, including associated HLE. Comprehensive evaluation, multidisciplinary collaboration, and individualized management are essential for optimizing outcomes in patients with complex CNS inflammatory disorders.

An Unusual Presentation of the Cervicobrachial Variant of Guillain-Barré Syndrome in a 32-Year-Old Previously Healthy Male.

Guillain-Barré syndrome (GBS) is a rare autoimmune disorder characterized by acute peripheral nerve demyelination. The cervicobrachial (CB) variant presents with predominant upper limb weakness and has distinct clinical features. This case report aims to detail the clinical manifestations, diagnostic methodology, treatment outcomes, and broader implications of the CB variant of GBS. This case report presents a 32-year-old male, with a rare CB type of GBS, characterized by upper limb weakness and distinctive clinical features. Following a recent flu-like illness, the patient exhibited sudden onset weakness and neck pain. Neurological examination revealed proximal muscle weakness in the upper limbs with associated impaired pinprick sensation. Relevant laboratory investigations and imaging supported the diagnosis. The patient was diagnosed based on clinical suspicion, presentation, and cerebrospinal fluid (CSF) albuminocytological dissociation. The patient responded to intravenous immunoglobulin (IVIG) therapy, highlighting the importance of early recognition and intervention. The diagnostic approach involved nerve conduction studies (NCS), CSF analysis, and imaging, with normal findings on CT, MRI brain & cervical spine, and NCS. IVIG therapy resulted in significant improvement in muscle power. In conclusion, this case shows the significance of early recognition and intervention in the CB variant of GBS. The diagnostic methodology, encompassing advanced modalities, played a crucial role in confirming the diagnosis.

The Degradation of Intramuscular Connective Tissue In Vitro with Purified Cathepsin L from Bovine Pancreas.

To investigate the possible degradation of the intramuscular connective tissue (IMCT) with cathepsin L, isolated IMCTs were incubated with purified cathepsin L in vitro. Here, we prepared purified cathepsin L from bovine pancreas by using DEAE Sephacel, Sephacryl S-100 HR, SP Sepharose FF, and con A-Sepharose affinity chromatography in sequence. An SDS-PAGE analysis of CNBr-digested peptides showed that the degradation of collagen in IMCT could take place on terminal non-helical peptides rather than the triple helix region. Decorin (DCN) was clearly degraded at a pH of 5.0. The TP and TO of intramuscular connective tissue decreased to 41.41 °C and 43.79 °C, respectively. In the cathepsin L treatment of pH 5.0, the decreases in the TP and TO of IMCT were more sensitive than they were at pH 5.5~6.5.

A comprehensive study on microbial-surfactants from bioproduction scale-up toward electrokinetics remediation of environmental pollutants: Challenges and perspectives.

Currently, researchers have focused on electrokinetic (EK) bioremediation due to its potential to remove a wide-range of pollutants. Further, to improve their performance, synthetic surfactants are employed as effective additives because of their excellent solubility and mobility. Synthetic surfactants have an excessive position in industries since they are well-established, cheap, and easily available. Nevertheless, these surfactants have adverse environmental effects and could be detrimental to aquatic and terrestrial life. Owing to social and environmental awareness, there is a rising demand for bio-based surfactants in the global market, from environmental sustainability to public health, because of their excellent surface and interfacial activity, higher and stable emulsifying property, biodegradability, non- or low toxicity, better selectivity and specificity at extreme environmental conditions. Unfortunately, challenges to biosurfactants, like expensive raw materials, low yields, and purification processes, hinder their applicability to large-scale. To date, extensive research has already been conducted for production scale-up using multidisciplinary approaches. However, it is still essential to research and develop high-yielding bacteria for bioproduction through traditional and biotechnological advances to reduce production costs. Herein, this review evaluates the recent progress made on microbial-surfactants for bioproduction scale-up and provides detailed information on traditional and advanced genetic engineering approaches for cost-effective bioproduction. Furthermore, this study emphasized the role of electrokinetic (EK) bioremediation and discussed the application of BioS-mediated EK for various pollutants remediation.