751 results match your criteria: "Higher Institute of Biotechnology[Affiliation]"

Is Pseudofrankia, the non-nitrogen-fixing and/or non-nodulating actinorhizal nodule dweller, mutualistic or parasitic? Insights from genome-predictive analysis.

Int Microbiol

December 2024

Department of Biological and Chemical Engineering, USCR Molecular Bacteriology and Genomics, National Institute of Applied Science and Technology, University of Carthage, 1080, Tunis Cedex, Tunisia.

This study re-evaluates Pseudofrankia strains, traditionally regarded as parasitic dwellers of actinorhizal root nodules due to their inability to fix nitrogen (Fix -) and/or nodulate (Nod -), as potential plant growth-promoting bacteria (PGPB). We compared plant growth-promoting traits (PGPTs) between Pseudofrankia strains, including one newly sequenced strain BMG5.37 in this study and typical (Fix + /Nod +) Frankia, Protofrankia, and Parafrankia, as well as non-frankia actinorhizal species Nocardia and Micromonospora, and the phytopathogenic Streptomyces.

View Article and Find Full Text PDF

Genetic Insights Into Epidermolysis Bullosa: Identification of Novel Variants in Tunisian Patients.

Am J Med Genet A

December 2024

Laboratory of Human Cytogenetics, Molecular Genetics, and Reproductive Biology, Farhat Hached University Hospital, University of Sousse, Sousse, Tunisia.

Epidermolysis Bullosa (EB) is a group of genetic skin disorders characterized by extreme skin fragility and blistering. In North African countries, including Tunisia, complex genetic and phenotypic diversity is entangled with a scarcity of scientific research on EB. This lack of knowledge presents a distinct challenge in terms of diagnostic accuracy and patient care.

View Article and Find Full Text PDF

Protective Effects of Spirulina Against Lipid Micelles and Lipopolysaccharide-Induced Intestinal Epithelium Disruption in Caco-2 Cells: In Silico Molecular Docking Analysis of Phycocyanobilin.

Nutrients

November 2024

Centro de Investigacion Biomedica en Red de Diabetes y Enfermedades Metabolicas Asociadas (CIBERDEM), Instituto de Investigacion Biomedica de Malaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Regional Universitario de Malaga, UGC Endocrinología y Nutricion, 29009 Malaga, Spain.

Unlabelled: Damage to intestinal epithelial cells is present in obesity and other diseases because of inflammatory and oxidative processes. This damage compromises the gastrointestinal barrier, killing enterocytes, altering intestinal permeability, and eliciting abnormal immune responses that promote chronic inflammation. Recent evidence shows that spirulina is a potent natural agent with antioxidant and anti-inflammatory properties.

View Article and Find Full Text PDF

The taxa and are sympatric in Tunisia. The genetics underlying their morphological differences are unresolved. In this study, ticks collected in Jouza-Amdoun, Tunisia, were morphologically identified and sequenced using Oxford Nanopore Technologies.

View Article and Find Full Text PDF

Exploring the metabolic changes of Ceratitis capitata Vienna 8 strain across three developmental stages through probiotic larval diet supplementation.

PLoS One

December 2024

Laboratory of Biology and Bio-Georessources LR11ES31, Higher Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana, Tunisia.

Article Synopsis
  • The Sterile Insect Technique (SIT) uses sterilized male pests to control populations without harming the environment, by mating them with wild females who then don't produce offspring.
  • Recent studies show that adding probiotics to the diet of medflies (Ceratitis capitata) significantly improves their quality, which could enhance SIT's effectiveness.
  • An analysis of medflies showed that probiotic supplementation altered their metabolomic profile, leading to the identification of key metabolites that could play roles in pest control strategies.*
View Article and Find Full Text PDF

Taxonomic note on and : taxogenomic insights for addressing misidentifications and proposing new combinations and new subspecies.

Int J Syst Evol Microbiol

November 2024

Department of Biological and Chemical Engineering, USCR Molecular Bacteriology & Genomics, University of Carthage, National Institute of Applied Sciences and Technology, Tunis Cedex 2080, Tunisia.

Misidentifications of and species often occur due to their overlapping traits, including similar cell shapes, biochemical characteristics and environmental preferences. These revisions aim to address significant overlaps and correct previous misidentifications. Phylogenetic analysis using 16S rRNA gene and core protein sequences has positioned 257T and 36T within the genus .

View Article and Find Full Text PDF
Article Synopsis
  • - Polysaccharides were extracted from leaves (WSPRaL) and stems (WSPRaS) of a plant, yielding about 3% and 3.25%, respectively, with varying compositions of proteins, lipids, and sugars.
  • - Detailed analyses showed that WSPRaL and WSPRaS contain different types of carbohydrates, with SEM and FT-IR used to examine their microstructure and physicochemical properties.
  • - The polysaccharides demonstrated strong antioxidant, antibacterial, and biofilm-inhibitory activities, suggesting their potential as functional ingredients in the food and nutraceutical industries.
View Article and Find Full Text PDF

Background: In camels, thelaziosis is mainly caused by Thelazia leesei Railliet & Henry, 1910, a little-known eyeworm species. Given the paucity of scientific data, this study aimed to provide new insights into the morphology, molecular characterization, and phylogenetic relationship of T. leesei and its occurrence in camels from Iran, where animals suffer from the high burden of eyeworms.

View Article and Find Full Text PDF

Arterial stiffness has emerged as a prominent marker of risk for cardiovascular diseases. Few studies are interested in predicting symptomatic or asymptomatic arterial stiffness from hemodynamics and biomechanics parameters. Machine learning models can be used as an intelligent tool for arterial stiffness detection based on hemodynamic and biomechanical parameters.

View Article and Find Full Text PDF

CYP2C gene polymorphisms in North African populations.

Mol Biol Rep

November 2024

Laboratory of Genetics, Immunology and Human Pathologies, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia.

Background: Cytochrome P450 is a superfamily of genes generating hemoproteins that metabolize foreign chemicals as well as endogenous compounds, such as steroids. The human CYP2C genes (CYP2C8, CYP2C9, CYP2C18, CYP2C19) cluster on chromosome 10 and metabolize many clinically useful drugs. CYP2C19 and CYP2C9 have been the most studied while CYP2C8 has been studied less frequently.

View Article and Find Full Text PDF

Genome-Wide Analysis of the Common Fig (Ficus carica L.) R2R3-MYB Genes Reveals Their Structure, Evolution, and Roles in Fruit Color Variation.

Biochem Genet

November 2024

Laboratory of Genetics, Biodiversity and Bioressources Exploitation (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, 5000, Monastir, Tunisia.

The R2R3-MYB transcription factor (TF) family is crucial for regulating plant growth, stress response, and fruit ripening. Although this TF family has been examined in a multitude of plants, the R2R3-MYB TFs in Ficus carica, a Mediterranean fruit species, have yet to be characterized. This study identified and classified 63 R2R3-MYB genes (FcMYB1 to FcMYB63) in the F.

View Article and Find Full Text PDF

Prevalence and determination of species distribution of in poultry from the Swabi district, Pakistan.

Vet World

September 2024

Department of Basic Sciences, Higher Institute of Biotechnology of Sidi Thabet, University of Manouba, Manouba 2010, Tunisia.

Article Synopsis
  • Coccidiosis is a major issue in poultry farming, particularly in District Swabi, Pakistan, where data on its prevalence and species distribution in chickens is scarce.
  • A study collected 900 fecal samples from broiler and egg-laying chickens, revealing a 44.4% infection rate, with broilers, younger birds, and females showing higher infection rates.
  • The findings highlight the need for targeted interventions to manage coccidiosis and suggest future research into sampling methods and the clinical impact of the identified parasites.
View Article and Find Full Text PDF
Article Synopsis
  • Trypanosomiasis is a parasitic disease significantly affecting livestock and human health in Southern Punjab, Pakistan, prompting a study to gauge its prevalence among camels, cattle, buffaloes, goats, and sheep.* -
  • The study analyzed 240 blood samples and found an overall infection rate of 22.08%, with camels showing the highest rates of infection (45.83%) compared to other ruminants, while the prevalence varied by district.* -
  • Different methods, including microscopy and PCR, were used to confirm infections, revealing varying positivity across species and districts, but no substantial differences in PCR results among the species tested.*
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates a new water-soluble polysaccharide called PSP extracted from leaves, using techniques like FT-IR and NMR to identify its chemical structure.
  • HPLC analysis shows that PSP is a heteropolysaccharide made up of two types of monosaccharides, with additional assessments revealing its semi-crystalline nature and various functional properties.
  • The research highlights PSP's antioxidant potential in food preservation, particularly in ground beef, where it significantly inhibits lipid oxidation, microbial growth, and demonstrates stability in color, pH, and moisture.
View Article and Find Full Text PDF

Environmental microplastics compromise reproduction of the marine invertebrate Mytilus galloprovincialis: A holistic approach.

J Hazard Mater

December 2024

Laboratory of Agrobiodiversity and Ecotoxicology, Higher Institute of Agronomy, University of Sousse, Tunisia; Higher Institute of Biotechnology, University of Monastir, Tunisia.

The extensive presence of microplastics (MPs) in marine ecosystems constitutes a major threat to aquatic environments. The gametes of the marine invertebrate Mytilus galloprovincialis, which is essential for coastal ecosystems, are released directly into the water, potentially exposing them to environmental microplastics (EMPs). This study examined the effects of exposing M.

View Article and Find Full Text PDF

In Tunisia, the date industry generates a large quantity of waste, raising environmental concerns. However, dates are rich in sugars, which offer a renewable source of nutrients for various applications. In this study, sugar extraction from two low-grade pitted date fruits (Alig and Kentichi) under ultrasound, was optimized using full factorial design.

View Article and Find Full Text PDF

Triple-negative breast cancer (TNBC) is known to have the worst outcome compared to the other forms of breast cancer. Moreover, molecular markers identified basal-like breast cancer (BLBC) phenotypes to be also related to a worse prognosis. In this study, we evaluated by immunohistochemistry (IHC) the prognostic significance of combining Cytokeratin-19 (CK19), E-cadherin, and Ki-67 tissue expression in triple-negative breast cancer (TNBC) cases presenting a basal-like (BLBC) or a non-basal-like (n-BLBC) phenotype to improve the selection and the monitoring of BC patients with a more aggressive outcome.

View Article and Find Full Text PDF

Essential oils (EOs) from various medicinal and aromatic plants are known for their diverse biological activities, including their antimicrobial effects. EO is traditionally used for therapeutic benefits due to its high content of bioactive compounds. Therefore, this study focuses on its potential use as a food preservative by investigating the combined antibacterial properties of EOs from leaves (EO1), flowers (EO2), and small branches (EO3) of against six bacterial strains by the agar disk diffusion, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) methods.

View Article and Find Full Text PDF
Article Synopsis
  • A study in Narowal, Punjab, found that 72.92% of ruminants slaughtered were infected with gastrointestinal parasites, with goats having the highest infection rate at 78.63%.
  • Female ruminants experienced significantly higher infection rates (85.62%) than males (65.13%).
  • The research revealed a severe economic impact, estimating annual losses of approximately Pak. Rs. 405.09 million (around USD 1.43 million) due to organ condemnation from GI parasites.
View Article and Find Full Text PDF

Global access to clean and safe drinking water remains a formidable challenge, contributing to a myriad of health issues. This research exposes the existence of waterborne parasites in seemingly pristine spring waters, indicating potential contamination. Daily extensive sampling of Seventeen water sources was conducted in the untarnished freshwater streams of Tehsil Babuzai, District Swat, Khyber Pakhtunkhwa, Pakistan, from February to September 2021.

View Article and Find Full Text PDF

Background: Chronic constipation is a gastrointestinal functional disorder which affects patient quality of life. Therefore, many studies were oriented to search herbal laxative agents. In this study, we investigated the phytochemical composition of beetroot juice (BJ) and its laxative potential in an experimental model of constipation and colonic dysmotility induced by loperamide (LOP) in Wistar rats.

View Article and Find Full Text PDF

fruit aqueous extract individual/combined with famotidine mitigates peptic ulcer induced by alcohol in rats.

Toxicol Res (Camb)

October 2024

Laboratory of Functional Physiology and Valorization of Bio-Resources, University of Jendouba, Higher Institute of Biotechnology of Béja, Béja 9000 BP n° 382, Tunisia.

The present study was performed to evaluate the therapeutic impact of fruit aqueous extract (DKFAE) on ethanol induced peptic ulcer. The phytochemical studies of DKFAE were investigated using colorometric analysis. Gastric ulcer was induced by one dose of ethanol (5 ml/Kg, b.

View Article and Find Full Text PDF

Background: The prompt development of obesity/constipation is the most serious problem for both children and adults. Limited studies suggested an association between them but lacked preclinical studies. This study allows to evaluate their crosslink and to compare the aqueous extracts laxative actions of two edible wild fruits of Arbutus unedo (AUAE) and Crataegus monogyna (CMAE) in constipated high-fat diet (HFD) rats.

View Article and Find Full Text PDF