Digestive System Research Articles

The Role of the Vagus Nerve in the Microbiome and Digestive System in Relation to Epilepsy.

The Enteric Nervous System (ENS) is described as a division of the Peripheral Nervous System (PNS), located within the gut wall and it is formed by two main plexuses: the myenteric plexus (Auerbach's) and the submucosal plexus (Meissner's). The contribution of the ENS to the pathophysiology of various neurological diseases such as Parkinson's or Alzheimer's disease has been described in the literature, while some other studies have found a connection between epilepsy and the gastrointestinal tract. The above could be explained by cholinergic neurons and neurotransmission systems in the myenteric and submucosal plexuses, regulating the vagal excitability effect. It is also understandable, as the discharges arising in the amygdala are transmitted to the intestine through projections the dorsal motor nucleus of the vagus, giving rise to efferent fibers that stimulate the gastrointestinal tract and consequently the symptoms at this level. Therefore, this review's main objective is to argue in favor of the existing relationship of the ENS with the Central Nervous System (CNS) as a facilitator of epileptogenic or ictogenic mechanisms. The gut microbiota also participates in this interaction; however, it depends on many individual factors of each human being. The link between the ENS and the CNS is a poorly studied epileptogenic site with a big impact on one of the most prevalent neurological conditions such as epilepsy.

The Future of Cystic Fibrosis Care: Exploring AI's Impact on Detection and Therapy

: Cystic Fibrosis (CF) is a fatal hereditary condition marked by thicker mucus production, which can cause problems with the digestive and respiratory systems. The quality of life and survival rates of CF patients can be improved by early identification and individualized therapy measures. With an emphasis on its applications in diagnosis and therapy, this paper investigates how Artificial Intelligence (AI) is transforming the management of Cystic Fibrosis (CF). AI-powered algorithms are revolutionizing CF diagnosis by utilizing huge genetic, clinical, and imaging data databases. In order to identify CF mutations quickly and precisely, machine learning methods evaluate genomic profiles. Furthermore, AI-driven imaging analysis helps to identify lung and gastrointestinal issues linked to cystic fibrosis early and allows for prompt treatment. Additionally, AI aids in individualized CF therapy by anticipating how patients will react to already available medications and enabling customized treatment regimens. Drug repurposing algorithms find prospective candidates from already-approved drugs, advancing treatment choices. Additionally, AI supports the optimization of pharmacological combinations, enhancing therapeutic results while minimizing side effects. AI also helps with patient stratification by connecting people with CF mutations to therapies that are best for their genetic profiles. Improved treatment effectiveness is promised by this tailored strategy. The transformational potential of artificial intelligence (AI) in the field of cystic fibrosis is highlighted in this review, from early identification to individualized medication, bringing hope for better patient outcomes, and eventually prolonging the lives of people with this difficult ailment.

Clinical Significance of HHLA2 as a Novel Therapeutic Target for Colorectal Cancer.

Colorectal cancer (CRC) is a high-indence malignance of the digestive system with a high mortality rate in the world. The results are desired to provide an important theoretical basis for discovering new therapeutic targets for CRC. The expression of human endogenous retrovirus-H-long terminal repeat association protein 2 (HHLA2) in human CRC was detected to explore its correlationship with clinicopathological features and prognosis of patients and its potential in treating CRC. Western blot was employed to detect HHLA2 expression in fresh tissues obtained from 6 CRC patients' excisions, including cancer, paracancer, and normal issues. Immunohistochemical staining was employed to determine HHLA2 expression in paraffin-embedded specimens of 139 patients with colorectal cancer, and its relationship with the clinicopathological profiles and survival was analyzed. Small interfering RNA (siRNA) targeting HHLA2 was used to transfect CRC cells to silent HHLA2. MTT, plate colony formation, cell scratch, and Transwell assay were conducted to observe the proliferation, migration, and invasion of CRC cells. HHLA2 protein was expressed in human colorectal cancer tissues, paracancer tissues and normal tissues, which was significantly upregulated in cancer tissues (P<0.01). HHLA2 expression level in CRC tissues showed a close correlationship with the invasion depth of the tumor (P=0.000), metastasis of regional lymph nodes (P=0.018), clinical stage (P=0.010), and patient survival (P=0.011). Correlation with gender (P=0.873), age (P=0.864), location of the tumor (P=0.768), degree of tumor differentiation (P=0.569) and distant metastasis (P=0.494) exhibited no significance. The survival time of CRC patients with high and low HHLA2 expression groups was 43.231 months and 55.649 months, respectively, with a statistical difference between the two groups (P=0.001). Silencing HHLA2 inhibited proliferation, migration and invasion of CRC cells significantly. HHLA2 is overexpressed in CRC tissues which is associated with poor prognosis of patients. HHLA2 might be recognized as a new candidate for adjuvant diagnosis and prognosis of CRC, as well as a promised new target for immunotherapy of CRC.

Current antibiotic resistance of Enterobacteriaceae isolated at Avicenna military hospital of Marrakesh

Enterobacteriaceae are bacteria found in the digestive system, known for causing infections and displaying antibiotic resistance. The World Health Organization (WHO) identifies strains resistant to third-generation cephalosporins and carbapenems as priority pathogens. This study, conducted at Avicenne Military Hospital of Marrakech, aimed to assess the epidemiological and antibiotic resistance profiles of Enterobacteriaceae over a two-year period (May 2020 - April 2022) to inform updated antibiotic use recommendations. This retrospective study analyzed 1,626 positive bacterial isolates from various hospital departments, including medical, surgical, intensive care, emergency units, and external samples. Of these, 1,163 (71.5%) were Enterobacteriaceae, predominantly Escherichia coli, Klebsiella pneumoniae, and Enterobacter cloacae, primarily isolated from urine, pus, and blood cultures. Antibiotic resistance was assessed, revealing that 614 (52.8%) of Enterobacteriaceae were extended-spectrum beta-lactamase producers (ESBL-E), and 115 (9.9%) were carbapenemase-producing Enterobacteriaceae (CPE). The study’s findings align with existing literature, showing a higher prevalence of Enterobacteriaceae in males and frequent isolation of Escherichia coli. The rise in multidrug-resistant Enterobacteriaceae, particularly ESBL-E and CPE, poses risks such as therapeutic failure, increased morbidity and mortality, and significant economic impacts. To address this, the study emphasizes the importance of early detection, infection control measures, responsible antibiotic prescribing, and collaborative efforts across hospital departments to reduce the spread of resistant strains.

Influence of genotype on carcass composition, metric traits of the digestive system and leg bones of laying hens after the egg-production season

Context The genotype of laying hens is one of the most important factors influencing their carcass composition and anatomical features. Aims The aim of the present study was to compare two genotypes of laying hens, Lohmann Brown and Lohmann White, after the laying period. Methods The experimental material consisted of 26 carcasses obtained after slaughtering spent laying hens at the age of 83 weeks. Key results The genotype of the birds had a significant (P &lt; 0.05) effect on carcass weight, and the proportion (%) of the breast muscle, leg muscle and gizzard weight. Significant correlations were also found between bodyweight and the weight of the stomach, proventriculus, liver and spleen. The origin of the laying hens also had a significant impact on the length of the sections on intestinal segments, namely, jejunum, ileum and colon. Significant differences in the correlations between bodyweight and length of duodenum, jejunum and rectum were also found. The compared hybrids of laying hens differed significantly in the dimensions of the femur and tibia. Lohmann Brown (LB) hens were characterized by higher greatest length, medial length, smallest breadth of the corpus, and greatest breadth of the distal end of the femur compared with Lohmann White (LW) hens. Dimensions of the tibia greatest length, axial length, smallest breadth of the corpus, greatest breadth of the distal end and greatest depth of the distal end in LB hens were also significantly (P &lt; 0.05) higher than those in LW hens. Conclusions The results showed that the genotype of laying hens tested after the laying period influenced carcass weight and muscle percentage, as well as differentiated the birds in terms of dimensions of individual segments of the digestive tract, femur, and tibia bones. Implications The results of this research may be useful for consumers of laying hen carcasses and people interested in poultry anatomy.

The Relationship between Diet and Stress with Gastritis Symptoms in Adolescents at Integrated Agricultural Vocational Schools

Adolescence is a productive age that can experience lifestyle changes that don't pay attention to health, making them susceptible to gastritis symptoms. Common causes of gastritis include improper eating patterns, such as inappropriate frequency or timing of meals, eating excessively and quickly, or consuming foods that are stimulating (too spiced and spicy). Gastritis can easily attack individuals who have irregular eating patterns. Stress affects changes in physiological functions in the body's systems, one of which is the digestive system. Stress can cause decreased appetite, stomach emptying, increased stomach acid, resulting in pain in the stomach. This study aims to determine the relationship between diet and stress and symptoms of gastritis in adolescents. This research is a cross sectional study conducted on 271 teenagers at the Integrated Agricultural Vocational School, Riau Province. The data collection tool is a questionnaire that is valid and has high reliability. The results of the analysis carried out using the chi square test showed that there was a significant relationship between diet and stress and symptoms of gastritis in adolescents as evidenced by a correlation value of 0.000 α 0.05. After conducting research, the results showed that poor eating patterns and high levels of stress can result in symptoms of gastritis.

Mercury contamination of soil and Matricaria chamomilla in selected regions of the Slovak Republic

Abstract Background The aim of our study was to determine the amount of mercury in Chamomile. In certain parts of Slovakia, such as Middle Spiš region in Eastern Slovakia, there has been reports of higher concentration of mercury in the soil. Heavy metals, including mercury, can enter human organism by ingestion. In case of using Chamomile infusions orally there is a risk of administration of mercury into the organism through digestive system. Methods We monitored mercury presence in Chamomile (Matricaria chamomilla) (n = 20) and the soil. We determined the mercury concentration by using the flameless atomic absorption spectrometer - Advanced Mercury Analyzer (AMA-254). Results Chamomile: The lowest concentration was in the roots (0.513 mg.kg-1). The second lowest was in the flower stem samples (1.105 mg.kg-1). The concentration of mercury was higher in the leaves (2.205 mg.kg-1). The highest was measured in the flower (2.541 mg.kg-1). Soil: The mercury content in soil in the entire territory of Slovakia is higher compared to the soil in the world. During our measurements, the concentration of mercury in the soil samples in the territory of Middle Spiš ranged from 100 to 500 mg.kg-1. Conclusions We have to take into account that the quality and contents of the soil are important for the crops, as it will entail their contents. With the knowledge of exceeded norms of mercury content in Slovak soils, it is crucial to monitor the mercury concentration in plants that are harvested there. Key messages • In the examined samples of Chamomile we found mercury, with its highest concentration in flowers and lowest in roots. • In the regions with significant mercury contamination it is crucial to monitor mercury content in harvested plants and to be cautious in regards of their consumption.

Do shift-working nurses’ work-life quality relate to their physical health and diet quality?

Abstract Background Shift work negatively affects work-related quality of life and this situation causes significant labour force losses and decreased productivity in the society, especially health problems in nurses. This study was conducted to determine the relationship between work-related quality of life, physical health level and nutritional behaviours of nurses working in shifts. Methods This descriptive and relationship-seeking study was conducted with 312 nurses selected by quota sampling in Istanbul. Data were collected between December 2022 to July 2023 using the The Professional Quality of Life Scale (ProQOL), Physical Health Questionnaire and Food Consumption Frequency Questionnaire. Descriptive statistics and Pearson correlation tests were conducted on IBM SPSS 25.0. BeBIS 7.1 software were used for calculation diet index. Results Compassion Satisfaction (CS), Burnout (B) and Compassion Fatigue (CF) scores of nurses was examined, a relationship was found between CS score and B score (r=-0.39 p &amp;lt; 0.05) and between B score and CF score (r = 0.58 p &amp;lt; 0.05). CS score correlated with Cardiovascular Risk Level score (r=-0.15 p &amp;lt; 0.05) and diet index score (r = 0.15 p &amp;lt; 0.05). B score correlated with Gastrointestinal Risk Level score (r = 0.27 p &amp;lt; 0.05) and Cardiovascular Risk Level score (r = 0.38 p &amp;lt; 0.05). There was a correlation between the score of CF and Gastrointestinal Risk Level score (r = 0.25 p &amp;lt; 0.05) and Cardiovascular Risk Level score (r = 0.31 p &amp;lt; 0.05). Daily energy, fibre, vitamin B1 and C, folate, calcium and magnesium intakes of nurses were lower than the recommended. Conclusions Research results support that the gastrointestinal and cardiovascular systems have a direct relationship with stress and emotional states. In the policies to be developed within the scope of occupational health nursing practices, it is recommended to carry out studies to improve the physical health and nutritional behaviours of nurses in order to improve their work-related quality of life. Key messages • Nurses are a risky occupational group in terms of burnout. Protection studies should be prioritised to prevent burnout. • Gastrointestinal and cardiovascular system complaints of nurses should be paid special attention during recruitment and periodic examinations.

Use of specialist health care among Norwegian-born children with one immigrant parent

Abstract Background An increasing number of children grow up with one immigrant and one native born parent. We know little about health in this group. Our aim was to compare the risk of receiving diagnoses of physical health conditions in specialist health care among Norwegian-born children with one immigrant parent compared to Norwegian background children. Methods Data from Medical Birth Registry of Norway were linked to data from the Norwegian Patient Registry (diagnoses in specialist health care), and Statistics Norway (parental country of origin, education, and household income). We estimated hazard ratios (HR) with Cox proportional hazard regressions, with Norwegian background children as reference category, adjusted for sex, birth year, parental education, and household income. Results Children with an immigrant parent had lower hazards than Norwegian background children of diagnoses of most types of infections, but higher hazards of some, including tuberculosis, and skin infections. They also had higher hazards than Norwegian background children of receiving diagnoses of obesity and other nutritional deficiencies, and skin diseases, but lower hazards for other conditions, including chronic lower respiratory disease, disease of the digestive system, and visual or hearing impairment. The hazards of diagnoses of any neurological condition, sleeping disorders and epilepsy were lower among children with an immigrant mother, but higher among those with an immigrant father. Differences between children with one immigrant parent and Norwegian background could not be explained by differences in parental education or household income. Conclusions Children of one immigrant parent do not overall use specialist health care for physical health issues more than other children. Key messages • Awareness of diagnoses given most frequently to children of one immigrant parent can help promote timely diagnoses and adequate use of services, which is important for prevention of later illness. • Barriers to health care use among children of immigrants should be further researched.

Progress in research of proteomics related to digestive system tumor markers

Progress in research of proteomics related to digestive system tumor markers

Comprehensive analysis of clinical features, mRNA splicing, and immunological role of REEP5 in esophageal squamous cell carcinoma

Esophageal squamous cell carcinoma (ESCC) is a prevalent malignancy within the digestive system, characterized by high incidence and mortality rates. The biological role of REEP5 in ESCC progression remains poorly understood, despite its associations with various diseases, potentially accelerating tumor malignancy. We retrieved RNA-seq data and clinical information from 179 ESCC patients from the Gene Expression Omnibus (GEO) and 93 patients from The Cancer Genome Atlas (TCGA) databases. Bioinformatics analyses were conducted to explore the biological functions of REEP5 in ESCC, its role in the tumor microenvironment, and its prognostic value. Additionally, utilizing single-cell RNA-seq (scRNA-seq) data from 3 ESCC patients in the GEO database, we performed cluster analyses to investigate cell-specific expression differences of REEP5 between cancerous and adjacent non-cancerous tissues. Molecular biology experiments were also conducted to validate REEP5 expression disparities between tumor and non-tumor tissues. Compared to normal tissues, REEP5 was significantly enriched in ESCC tissues. High REEP5 expression was closely associated with poor prognosis in ESCC patients. Gene Ontology (GO) analysis revealed strong correlations between REEP5 and processes such as mRNA splicing and protein stabilization. Gene Set Enrichment Analysis (GSEA) and Gene Set Variation Analysis (GSVA) indicated positive correlations between REEP5 and mRNA spliceosome assembly and disassembly. Pearson correlation analysis demonstrated positive associations between REEP5 and cancer-inhibitory immune checkpoints CTLA-4, TIM-3, and HVEM. Single-cell clustering and CIBERSORT analysis showed that REEP5 expression was closely related to T-cell infiltration in ESCC, with significant enrichment effects observed in CD8+ T-cell infiltration. REEP5 expression is closely correlated with the pathological and molecular pathology of ESCC, potentially playing a crucial role in Mast cell or T-cell-mediated immune responses in ESCC. Therefore, REEP5 holds promise as a novel therapeutic target for ESCC.

Mitochondrial Dysfunction-Molecular Mechanisms and Potential Treatment approaches of Hepatocellular Carcinoma.

Primary liver cancer (PLC), also known as hepatocellular carcinoma (HCC), is a common type of malignant tumor of the digestive system. Its pathological form has a significant negative impact on the patients' quality of life and ability to work, as well as a significant financial burden on society. Current researches had identified chronic hepatitis B virus infection, aflatoxin B1 exposure, and metabolic dysfunction-associated steatotic liver disease (MASLD) as the main causative factors of HCC. Numerous variables, including inflammatory ones, oxidative stress, apoptosis, autophagy, and others, have been linked to the pathophysiology of HCC. On the other hand, autoimmune regulation, inflammatory response, senescence of the hepatocytes, and mitochondrial dysfunction are all closely related to the pathogenesis of HCC. In fact, a growing number of studies have suggested that mitochondrial dysfunction in hepatocytes may be a key factor in the pathogenesis of HCC. In disorders linked to cancer, mitochondrial dysfunction has gained attention in recent 10years. As the primary producer of adenosine triphosphate (ATP) in liver cells, mitochondria are essential for preserving cell viability and physiological processes. By influencing multiple pathological processes, including mitochondrial fission/fusion, mitophagy, cellular senescence, and cell death, mitochondrial dysfunction contributes to the development of HCC. We review the molecular mechanisms of HCC-associated mitochondrial dysfunction and discuss new directions for quality control of mitochondrial disorders as a treatment for HCC.

Exploring photobiomodulation in the management of bowel diseases: a concise critical review.

The complexity of the gastrointestinal system plays a crucial role in coordinating essential processes such as digestion, nutrient absorption, and waste elimination. inflammatory bowel diseases (IBD) pose significant treatment challenges due to their complex aetiology and varied symptoms. Conventional therapeutic approaches often involve pharmacological interventions, which may have side effects and limited efficacy. Photobiomodulation (PBM), also known as low-level light therapy, has emerged as a promising therapeutic or adjunctive alternative in the treatment of intestinal diseases. The search was conducted in the MEDLINE database via PubMed, SCOPUS, covering the period from 1990 to 2024. A total of 72 studies were selected, of which 9 focused on inflammatory bowel diseases IBD, including ulcerative colitis (UC) and Crohn's disease (CD). Among these studies, 1 was clinical protocol while eight experimental. The results showed that PBM has a significant positive effect in IBD studies in rats, with reduction of intestinal inflammation, improvement of mucosal integrity, and modulation of the immune response. However, no clinical studies were found necessary to obtain results and establish effective and safe treatment protocols. Nevertheless, PBM holds potential as a non-invasive and complementary therapeutic approach for managing IBD, offering new perspectives for the treatment of chronic intestinal diseases. Therefore, this brief review emphasizes the need to transition from preclinical research to clinical research on this topic and highlights the scarcity of clinical studies.

Phototriggered Hydrogen Persulfide Donors via Hydrosulfide Radical Formation Enhancing the Reactive Sulfur Metabolome in Cells.

Hydrogen persulfide (H2S2) is an important sulfur-containing signaling molecule that plays a crucial role in the homeostasis of various organ systems, such as the renal, cardiovascular, liver, and gastrointestinal systems. However, research on H2S2 in biological settings is still challenging due to its instability and high reactivity. Compounds that can controllably release H2S2 (also known as donors) are thus crucial research tools. Currently, available H2S2 donors are still very limited, with most of them relying on modified disulfide templates. These templates possess an unavoidable limitation of being susceptible to cellular disulfide exchange which can compromise their efficacy. In this work, we explored nondisulfide-based and nonoxidation-dependent templates for the design of H2S2 donors. We found that tertiary naphthacyl thiols could undergo phototriggered C-S homolytic cleavage to form H2S2 via hydrosulfide (HS) radicals. In addition, the release of H2S2 was associated with the formation of a product with strong blue fluorescence, which allowed for real-time monitoring of the release process. This reaction was demonstrated to proceed effectively in both buffers and cells, with the ability to enhance intracellular production of persulfides, including GSSH, CysSSH, H2S2, H2S3, etc. It provides a unique photocontrolled H2S2 donor system with distinct advantages compared to known H2S2 donors due to its good stability and spatiotemporal control ability.

Study on the chemical constituents and anti-free radical activity of mint essential oils in Binh Thuan Province, Vietnam

Mints (Mentha spp.) are famous aromatic and medicinal herbs that are used in traditional and folk medicines around the world for their antimicrobial and antioxidant properties. Mints contain volatile components such as flavonoids, organic acids, and quinones for the digestive system, central nervous system and respiratory system. Therefore, this study aimed to primarily find out the constituents and antioxidant activity of mint essential oil, which are very essential. The mint was harvested from the Ham Thuan Nam district of Binh Thuan province, Vietnam, in 2023. The essential oil of the mint was collected using steam distillation and dried with Na2SO4 for the final product. Chemical analysis of the components of the mint essential oil by GC-MS led to the identification of 17 chemical components, representing 98.72% of the hydro-distilled essential oil. Of these, five were hydrocarbons, such as monoterpenes (32.82%), and the rest were oxygenated hydrocarbons, such as alcohols (53.42%), aldehydes (4.67%), and ketones (7.81%). The 1,1-diphenyl-2-picrylhydrazol free radical scavenging activity of the mint essential oil was 39.36±1.23%, and this value was lower than that of 0.5 mM ascorbic acid (42.84 ±1.18%). Thus, the results of this study have high scientific and practical significance, when adding peppermint essential oil to food, it not only creates a fragrant smell for food, but also has antioxidant and antibacterial effects for food.

Systematic review of treatments for the gastrointestinal manifestations of systemic lupus erythematosus

ObjectivesTo comprehensively assess and present the evidence for treatments used in the management of the gastrointestinal manifestations of SLE. MethodsA systematic search of the literature from January 1990 to June 2022 was performed using the following databases: MEDLINE, EMBASE, PubMed and Cochrane. Key words relating to the gastrointestinal system, SLE, and treatment were used. Where there was sufficient evidence for the treatment of a manifestation, we excluded case series with <10 cases and case reports. However, for rarer manifestations with insufficient higher-level evidence, smaller case series and case reports were included. ResultsA total of 29 studies including 767 patients were included in the review; six cohort studies, 11 case-control studies, and 11 case series. Specific gastrointestinal manifestations included enteritis (5 studies), mesenteric vasculitis (3 studies), acute pancreatitis (5 studies), chronic pancreatitis (1 study), intestinal pseudo-obstruction (IPO) (2 studies), hepatitis (4 studies), protein-losing enteropathy (PLE) (6 studies), acute acalculous cholecystitis (2 studies), and Budd-Chiari Syndrome (1 study). Evidence for the treatment of Ascites (13 case reports), peritonitis (3 case reports), and miscellaneous GI manifestations (11 case reports) are included as a supplemental file. Most studies demonstrated a benefit from pulsed intravenous methylprednisolone (IVMP) in severe or life-threatening manifestations, and oral prednisolone for less severe manifestations. However, the quality of evidence was low, with a high risk of bias in all studies. ConclusionThis review highlights the need for standardised disease definitions and terminology, as well as consideration of including gastrointestinal manifestations in disease scoring systems. There is a significant need for high-quality clinical trials in the treatment of the gastrointestinal manifestations of SLE, which will likely need to be multi-centre. We hope that this review will promote awareness of the gastrointestinal manifestations of SLE, and serve as a practical guide for evidence-based treatment.

Modulation of blood pressure by dietary potassium and sodium: Sex differences and modeling analysis.

High Na+ intake has been linked to elevations in blood pressure, whereas K+ has the opposite effect. The underlying mechanisms involve complex interactions among renal function, fluid volume, fluid-regulatory hormones, the vasculature, cardiac function, and the autonomic nervous system. These mechanisms are likely moderated by sex, given the known sex differences in blood pressure regulation and the higher prevalence of hypertension in men. The source of these observed sex differences may be traced to organ and tissue levels, given that kidney function, intrarenal renin-angiotensin system components, renal sympathetic nervous activity, and nitric oxide bioavailability all exhibit sex differences. To assess the functional impact of each of these sex differences, we developed sex-specific computational models to simulate whole-body Na+, K+, and fluid homeostasis, and the effects on blood pressure. The models describe the interactions among the renal system, cardiovascular system, gastrointestinal system, renal sympathetic nervous system, and renin-angiotensin-aldosterone system. Model simulations suggest that women's attenuated blood pressure response to hypertensive stimuli, including high Na+ intake, may be largely attributable to the female renal transporter abundance pattern. Additionally, we investigated the causal link between high K+ intake and blood pressure reduction. The models simulate renal response to high K+ intake, including the immediate gastrointestinal feedforward signals to the kidneys to increase K+ excretion, and the longer-term response to decrease proximal fractional Na+ reabsorption and distal K+ reabsorption. With these assumptions, simulations of high K+ intake yielded kaliuresis, natriuresis, and a substantial reduction in blood pressure, even when combined with high Na+ intake.

CFTrack: Advanced Diagnostic, Monitoring, and Tracking Device for Cystic Fibrosis Care.

Cystic fibrosis (CF) is a genetic disorder that primarily affects the respiratory, digestive, and reproductive systems. In the United States, approximately 32,000 individuals, spanning both children and adults, suffer from CF, and roughly 1,000 new cases are diagnosed annually. The current gold standard for CF diagnosis is the sweat test, yet this method is plagued by issues such as being time-consuming, expensive, challenging to replicate, and lacking treatment monitoring capabilities. In contrast, the emerging field of wearable sweat biosensors has gained significant attention due to their potential for noninvasive health monitoring. Despite this, there remains a conspicuous absence of a wearable sweat biosensor tailored specifically for CF diagnosis and monitoring. Here, this study introduces a flexible wearable sweat biosensor, named CFTrack, designed to address the unique challenges associated with CF. This proposed CFTrack biosensor not only facilitates CF diagnosis but also enables the monitoring of medication treatment effectiveness and tracks therapy activities. In addition, it operates in a self-powered and customized manner, ensuring seamless integration into the daily lives of individuals with CF. Given that sweat tests and fitness routines are the predominant methods for diagnosing and treating cystic fibrosis patients, respectively, the proposed CFTrack biosensor leverages ion concentration in sweat for diagnostic purposes. Additionally, it incorporates a motion-tracking function to monitor physical activity, providing a comprehensive approach to CF management. To evaluate the feasibility of the proposed CFTrack biosensor, a comprehensive evaluation has been performed including numerical simulations, theoretical analyses, and experimental tests. The results demonstrate the efficacy of the proposed CFTrack biosensor in diagnosing and monitoring CF conditions while also showcasing its ability to effectively track the progress of patients undergoing physical therapy. The proposed CFTrack biosensor resolves key issues associated with existing sweat sensors including high energy consumption, intricate fabrication procedures, and the absence of continuous monitoring capabilities. By addressing these challenges, the proposed sweat biosensor aims to revolutionize CF diagnosis and monitoring, offering a more efficient and user-friendly alternative to current methods.

Toxicological assessment of the aqueous extract of Juniperus oxycedrus L. on acute and subacute toxicities in rats

Juniperus oxycedrus L. (J. oxycedrus) has a rich historical background in herbal remedies to treating digestive system abnormalities. However, no comprehensive evaluation of its potential toxic effects has been conducted. The current investigation aimed to evaluate the acute and subacute toxicity of an aqueous extract of J. oxycedrus (AEJO). AEJO was prepared by the conventional Moroccan methods by decoction the arial part of the plant. The acute and subacute toxicity tests were conducted in mice and rats, respectively. Acute toxicity tests showed that the extract was not toxic even at high doses of 5000 mg/kg. In the subacute study, no detectable indications of toxicity or mortality were observed and there were no notable deviations in food intake or water consumption among all rats. However, changes in body weight of animals treated with 1000 and 2000 mg/kg underwent a significant decrease. AEJO administration decreased platelet number, elevated levels of alanine aminotransferase and alkaline phosphatase, and reduced albumin levels. Histological examination revealed normal renal parenchyma despite increased creatinine. It also showed binucleation, and hepatocyte vacuolation. The results indicate that AEJO has considerable tolerance for consumption, but repeated use can affect hepatocytes and kidneys. Therefore, additional analyses, such as subchronic, chronic, and neurotoxic studies, are required before using this plant in clinical research.

PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS DISCOVERY LEARNING PADA MATERI SISTEM PENCERNAAN MANUSIA

The background to this research is the development of student worksheets based on Discovery Learning. This research aims to produce interactive learning media products on the human digestive system that are valid, practical and effective. This type of research is the development of the PLOMP model. The research method used in this research is research and development. This research was tested on 20 class VIII students at SMP Negeri 1 O'o'u. To standardize products, three test stages are carried out, namely: validity test, practicality test, effectiveness test. The instruments used are assessment questionnaires using a Likert scale and evaluation test questions to determine student learning outcomes. The research results show that the Discovery Learning-based LKPD is very valid with a presentation of 85% and is suitable for use. The average value of practicality assessed by teachers is 3.48 and students are 3.64 in the very practical category. Student motivation results are at 86% with a cognitive average of 88.7. The suggestion given by the researcher is that science-biology subject teachers should use LKPD as teaching materials in the teaching and learning process because it can increase students' interest and motivation to learn. Through this teaching material, students can broaden their horizons regarding science-biology learning on the subject of the human digestive system. For future researchers, this student worksheet can be used as reference material in research