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Journal articles on the topic 'Gram positive and Gram negative bacteria'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Niranjan, Pankaj Singh, Chandrul Koushal, and S. K. Jain. "Pharmacological investigation of leaves of Polypodium decumanum for anti-bacterial activity against gram-positive and gram-negative bacteria." International Journal of Research and Development in Pharmacy & Life Sciences 06, no. 04 (2017): 2685–88. http://dx.doi.org/10.21276/ijrdpl.2278-0238.2017.6(4).2685-2688.

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2

Hing, Jan Nie, Bor Chyan Jong, Pauline Woan Ying Liew, Rashid Elly Ellyna, and Shuhaimi Shamsudin. "Gamma Radiation Dose-Response of Gram-Positive and Gram-Negative Bacteria." Malaysian Applied Biology 51, no. 5 (2022): 107–12. http://dx.doi.org/10.55230/mabjournal.v51i5.2370.

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Bacterial mutagenesis induced through gamma irradiation is one of the techniques for strain improvement. The DNA changes caused by radiation and reactive oxygen species created from water radiolysis induced bacterial mutagenesis. There is always a constant demand for better quality strains from the bioprocessing industries to speed up production and increase yield. Bacillus strains are Gram-positive bacteria whereas Escherichia coli is a Gram-negative bacteria; they are all model organisms used by the bioprocessing industries. This study investigates the effect of acute gamma irradiation on Gr

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3

Vila Domínguez, Andrea, Rafael Ayerbe Algaba, Andrea Miró Canturri, Ángel Rodríguez Villodres, and Younes Smani. "Antibacterial Activity of Colloidal Silver against Gram-Negative and Gram-Positive Bacteria." Antibiotics 9, no. 1 (2020): 36. http://dx.doi.org/10.3390/antibiotics9010036.

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Due to the emergence of antimicrobial resistance, new alternative therapies are needed. Silver was used to treat bacterial infections since antiquity due to its known antimicrobial properties. Here, we aimed to evaluate the in vitro activity of colloidal silver (CS) against multidrug-resistant (MDR) Gram-negative and Gram-positive bacteria. A total of 270 strains (Acinetobacter baumannii (n = 45), Pseudomonas aeruginosa (n = 25), Escherichia coli (n = 79), Klebsiella pneumoniae (n = 58)], Staphylococcus aureus (n = 34), Staphylococcus epidermidis (n = 14), and Enterococcus species (n = 15)) we

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4

Ruhal, Rohit, and Rashmi Kataria. "Biofilm patterns in gram-positive and gram-negative bacteria." Microbiological Research 251 (October 2021): 126829. http://dx.doi.org/10.1016/j.micres.2021.126829.

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5

Matsunaga, T., and T. Nakajima. "Electrochemical classification of gram-negative and gram-positive bacteria." Applied and Environmental Microbiology 50, no. 2 (1985): 238–42. http://dx.doi.org/10.1128/aem.50.2.238-242.1985.

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6

Chaturongakul, Soraya, and Phumin Kirawanich. "Electropermeabilization responses in Gram-positive and Gram-negative bacteria." Journal of Electrostatics 71, no. 4 (2013): 773–77. http://dx.doi.org/10.1016/j.elstat.2013.06.005.

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7

Xiao, Zhiwen. "Antimicrobial Resistance Mechanisms of Gram-Positive and Gram-Negative Bacteria." McGill Science Undergraduate Research Journal 19, no. 1 (2024): 47–51. http://dx.doi.org/10.26443/msurj.v19i1.238.

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The discovery of antibiotics has long helped humans in the battle against bacteria. However, the misuse of antibiotics in industries and medical systems has unintentionally provided an ideal environment for bacteria to develop resistance mechanisms through mutations and gene transfer, resulting in the emergence of antimicrobial-resistant bacteria. This has proven to be an urgent and pressing issue in the global healthcare system, resulting in increased mortality. Therefore, increasing resources are invested to study their different resistance mechanisms and develop corresponding novel drugs an

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8

D., Sripriya. "Preliminary Phytochemical Screening and Antibacterial Activity of Vitex Leucoxylon. (L.) (Leaf) Against Various Bacterial Species." Biolife 1, no. 1 (2022): 5–10. https://doi.org/10.5281/zenodo.7180851.

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The aim of the present study was to evaluate the qualitative analysis of phytochemicals and antibacterial activity of various solvent (Petroleum ether, Benzene, Chloroform, Methanol and Water) extracts of <em>Vitex leucoxylon (L.) </em>leaves. Antimicrobial activity of different solvent extracts of Vitex<em> leucoxylon </em>leaves were tested against Gram positive and Gram negative bacterial strains by observing the zone of inhibition. The bacteria used in the study were <em>Staphylococcus aureus, Pseudomonas auriginosa,</em> <em>Pseudomonas putida, Escherichia coli Bacillus subtilis, Lactobac

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9

K., PRIYADARSINI, THOKALA HARSHITHA, and VATTIKUNTA PHANEENDRA. "Classification of gram-positive and gram-negative bacteria using Few-shot learning algorithm." World Journal of Advanced Research and Reviews 22, no. 2 (2024): 516–23. https://doi.org/10.5281/zenodo.14555072.

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Our research introduces a novel approach to classify bacteria as Gram-positive or Gram-negative using few-shot learning. We employ deep neural networks, specifically Prototypical Networks, to learn distinctive features from bacterial images, enabling accurate classification even with limited data. Experimental results on diverse datasets demonstrate the model's effectiveness and potential for real-world applications in microbiology and healthcare. We also address interpretability, ethics, and data privacy, making it a valuable tool for bacterial classification and diagnostics.

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10

Dahalan, Farrah Aini, and Nor Azizah Parmin. "Morphological characterization of gram-positive and gram-negative bacteria from treated latex processing wastewater." Environmental and Toxicology Management 1, no. 2 (2021): 32–36. http://dx.doi.org/10.33086/etm.v1i2.2263.

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A preliminary morphological screening and isolation of bacterial colony from latex industrial wastewater was carried out. Bacteria colonies from latex processing wastewater were isolated from a local latex processing industry. It was found that 17 bacterial isolates had been purified grown on nutrient agar under 35˚C. The colonies were then purified and morphologically indicated via Gram staining and motility test. After morphological observation, it was identified that out of 17 isolates, 9 isolates were Gram positive and 8 isolates were Gram negative. There are 11 out of 17 colonies were rod

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11

Kawakami, Naoki, and Shingo Fujisaki. "Undecaprenyl phosphate metabolism in Gram-negative and Gram-positive bacteria." Bioscience, Biotechnology, and Biochemistry 82, no. 6 (2017): 940–46. http://dx.doi.org/10.1080/09168451.2017.1401915.

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12

Grohmann, Elisabeth, Peter J. Christie, Gabriel Waksman, and Steffen Backert. "Type IV secretion in Gram-negative and Gram-positive bacteria." Molecular Microbiology 107, no. 4 (2018): 455–71. http://dx.doi.org/10.1111/mmi.13896.

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13

OJO, K., D. TUNG, H. LUIS, M. BERNARDO, J. LEITAO, and M. ROBERTS. "Gram-positive gene in gram-negative oral and urine bacteria." FEMS Microbiology Letters 238, no. 2 (2004): 411–16. http://dx.doi.org/10.1016/j.femsle.2004.08.004.

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14

Bryan, L. E., and J. Bedard. "Impermeability to quinolones in gram-positive and gram-negative bacteria." European Journal of Clinical Microbiology & Infectious Diseases 10, no. 4 (1991): 232–39. http://dx.doi.org/10.1007/bf01966995.

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15

Tsai, Tsuimin, Hsiung-Fei Chien, Tze-Hsien Wang, Ching-Tsan Huang, Yaw-Bee Ker, and Chin-Tin Chen. "Chitosan Augments Photodynamic Inactivation of Gram-Positive and Gram-Negative Bacteria." Antimicrobial Agents and Chemotherapy 55, no. 5 (2011): 1883–90. http://dx.doi.org/10.1128/aac.00550-10.

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ABSTRACTAntimicrobial photodynamic inactivation (PDI) was shown to be a promising treatment modality for microbial infections. This study explores the effect of chitosan, a polycationic biopolymer, in increasing the PDI efficacy against Gram-positive bacteria, includingStaphylococcus aureus,Staphylococcus epidermidis,Streptococcus pyogenes, and methicillin-resistantS. aureus(MRSA), as well as the Gram-negative bacteriaPseudomonas aeruginosaandAcinetobacter baumannii. Chitosan at <0.1% was included in the antibacterial process either by coincubation with hematoporphyrin (Hp) and subjection t

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Tavares, Tânia D., Joana C. Antunes, Jorge Padrão, et al. "Activity of Specialized Biomolecules against Gram-Positive and Gram-Negative Bacteria." Antibiotics 9, no. 6 (2020): 314. http://dx.doi.org/10.3390/antibiotics9060314.

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The increased resistance of bacteria against conventional pharmaceutical solutions, the antibiotics, has raised serious health concerns. This has stimulated interest in the development of bio-based therapeutics with limited resistance, namely, essential oils (EOs) or antimicrobial peptides (AMPs). This study envisaged the evaluation of the antimicrobial efficacy of selected biomolecules, namely LL37, pexiganan, tea tree oil (TTO), cinnamon leaf oil (CLO) and niaouli oil (NO), against four bacteria commonly associated to nosocomial infections: Staphylococcus aureus, Staphylococcus epidermidis,

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Hanker, Jacob S., Paul R. Gross, and Beverly L. Giammara. "Rapid demonstration of septic or infectious arthritis due to Gram-negative bacteria." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 1 (1992): 686–87. http://dx.doi.org/10.1017/s0424820100123830.

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Blood cultures are positive in approximately only 50 per cent of the patients with nongonococcal bacterial infectious arthritis and about 20 per cent of those with gonococcal arthritis. But the concept that gram-negative bacteria could be involved even in chronic arthritis is well-supported. Gram stains are more definitive in staphylococcal arthritis caused by gram-positive bacteria than in bacterial arthritis due to gram-negative bacteria. In the latter situation where gram-negative bacilli are the problem, Gram stains are helpful for 50% of the patients; they are only helpful for 25% of the

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18

Nilesh, Kumar. "An observation study to determine the bacteriological profile and antibiogram in cases of pneumonia." International Journal of Toxicological and Pharmacological Research 12, no. 4 (2022): 17–22. https://doi.org/10.5281/zenodo.12167521.

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<strong>Aim:</strong> Bacteriological profile and antibiogram in cases of pneumonia attending to tertiary care hospital. <strong>Methods</strong>: This study was carried out in the Department of Microbiology, Madhubani medical college Madhubani, Bihar, India, for 1 year  Clinically diagnosed cases of pneumonia (symptomatic), patients who developed symptoms of pneumonia after 48 hours of admission to the hospital and patients who developed symptoms 48 hours after being administered on the ventilator. 100 patients were included in this study. <strong>Results:</strong> Mo

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19

Çınar Acar, Berat. "Evaluation of ozone effectiveness against Gram-positive and Gram-negative pathogens using different methods." Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi 29, no. 2 (2024): 606–21. http://dx.doi.org/10.37908/mkutbd.1437244.

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Ozone attracts great attention due to its strong oxidative properties, antimicrobial activity, easy applicability, operating costs almost negligible, lack of chemicals in its use, highly effective and environmentally friendly application. In this study, two Gram (+) and two Gram (-) bacterial cultures, known as pathogens, were used to examine the effect of ozone gas on the growth of bacterial cultures. The samples were treated with ozone at different flow rates (4, 5, and 6 mg/L) and durations (1, 5, 10, 15, and 20 min) with different application parameters (pathogen bacteria, distilled water,

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20

Hessle, Christina, Bengt Andersson, and Agnes E. Wold. "Gram-Positive Bacteria Are Potent Inducers of Monocytic Interleukin-12 (IL-12) while Gram-Negative Bacteria Preferentially Stimulate IL-10 Production." Infection and Immunity 68, no. 6 (2000): 3581–86. http://dx.doi.org/10.1128/iai.68.6.3581-3586.2000.

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ABSTRACT Interleukin-10 (IL-10) and IL-12 are two cytokines secreted by monocytes/macrophages in response to bacterial products which have largely opposite effects on the immune system. IL-12 activates cytotoxicity and gamma interferon (IFN-γ) secretion by T cells and NK cells, whereas IL-10 inhibits these functions. In the present study, the capacities of gram-positive and gram-negative bacteria to induce IL-10 and IL-12 were compared. Monocytes from blood donors were stimulated with UV-killed bacteria from each of seven gram-positive and seven gram-negative bacterial species representing bot

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21

Suneet Kumar Sahni. "Evaluation of Antimicrobial Activity of Citrus Leaves against Gram Positive and Gram Negative Bacterial Strains." Proceeding International Conference on Science and Engineering 11, no. 1 (2023): 132–37. http://dx.doi.org/10.52783/cienceng.v11i1.107.

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In present study four bacterial strains, including Escherichia coli (Gram negative), Pseudomonas aeruginosa (Gram negative), Staphylococcus aureus (Gram positive), and Bacillus subtilis, were tested for antimicrobial activity of citrus leaf extracts in water, benzene, and methanol (Gram positive). According to the findings, Staphylococcus aureus (Gram positive) exhibited a 19 mm zone of inhibition in methanol extracts, followed by Bacillus subtilis (Gram positive) (16 mm). Staphylococcus aureus (Gram positive) showed zone of inhibition in benzene extracts was 17 mm, followed by Bacillus subtil

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22

Tauran, Patricia M., Irda Handayani, and Nurhayana Sennang. "IDENTIFIKASI BAKTERI AEROB GRAM NEGATIF DAN GRAM POSITIF MENGGUNAKAN METODE KONVENSIONAL DAN OTOMATIK." INDONESIAN JOURNAL OF CLINICAL PATHOLOGY AND MEDICAL LABORATORY 19, no. 2 (2018): 105. http://dx.doi.org/10.24293/ijcpml.v19i2.1065.

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Choosing the method of bacteria identification is crucial to obtain accurate and quick results. This study will analyze the identificationresults of Gram negative and Gram positive from aerobic bacteria by examination using conventional and automatic methods at Dr.Wahidin Sudirohusodo Hospital Laboratory. A total of 85 samples consisting of 66 Gram negative bacteria and 19 Gram positive bacteriawere identified using conventional and automated methods. In this study, there was some correspondent identification result betweenthe conventional as well as the automated methods, namely 31.5% for Gra

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23

K. PRIYADARSINI, HARSHITHA THOKALA, and PHANEENDRA VATTIKUNTA. "Classification of gram-positive and gram-negative bacteria using Few-shot learning algorithm." World Journal of Advanced Research and Reviews 22, no. 2 (2024): 516–23. http://dx.doi.org/10.30574/wjarr.2024.22.2.1427.

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Our research introduces a novel approach to classify bacteria as Gram-positive or Gram-negative using few-shot learning. We employ deep neural networks, specifically Prototypical Networks, to learn distinctive features from bacterial images, enabling accurate classification even with limited data. Experimental results on diverse datasets demonstrate the model's effectiveness and potential for real-world applications in microbiology and healthcare. We also address interpretability, ethics, and data privacy, making it a valuable tool for bacterial classification and diagnostics.

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Toyyibah, Ilma Dzurriyyatan, Musofa Rusli, and Juniastuti Juniastuti. "BACTERIAL PATTERN AMONG SEPSIS PATIENTS IN INTERNAL MEDICINE INPATIENT WARD DR. SOETOMO GENERAL ACADEMIC HOSPITAL, SURABAYA, INDONESIA IN 2017-2019." Majalah Biomorfologi 32, no. 2 (2022): 52–58. http://dx.doi.org/10.20473/mbiom.v32i1.2022.52-58.

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Highlights:1. Bacteria remain a major cause of bacterial sepsis.2. The most common causal agent in bacterial septicaemia was the gram-positive bacterium. Abstract: Background: Bacteria remain the primary cause of bacterial sepsis. Gram-negative bacteria are the most commonly isolated from sepsis patients. However, gram-positive bacterial infections have also increased recently. Objective: To identify the pattern of bacterial infection in sepsis patients in Internal Medicine inpatient ward Dr. Soetomo General Academic Hospital, Surabaya, Indonesia. Material and Method: This retrospective study

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Zeph, Lawrence R., and L. E. Casida. "Gram-Negative Versus Gram-Positive (Actinomycete) Nonobligate Bacterial Predators of Bacteria in Soil †." Applied and Environmental Microbiology 52, no. 4 (1986): 819–23. http://dx.doi.org/10.1128/aem.52.4.819-823.1986.

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Ali, Intesar Hussien. "The effect of garlic (Allium sativum) extract on gram positive and negative bacteria." Journal of Biotechnology Research Center 2, no. 1 (2008): 65–70. http://dx.doi.org/10.24126/jobrc.2008.2.1.29.

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The antibacterial effect of garlic (Allium sativum) extract was evaluated by in vitrostudy testing the growth of various Gram-Positive and Gram-Negative bacteria.The bactericidal activity of this extract was analyzed by serial dilution in tubes.This study, found that Gram-Negative and Gram-Positive bacteria susceptible tovery low garlic concentrations. On the other hand, Gram-Negative bacteria weremore susceptible than Gram-Positive bacteria, the minimal bactericidalconcentration of Gram-Negative bacteria was 2 mg ml-1 but minimal bactericidalconcentration of Gram-Positive bacteria was 4 mg ml

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G., Kiranmai* Kiran Koundinya. "ANTIBACTERIAL ACTIVITY OF TECOMASTANS AGAINST GRAM POSITIVE AND GRAM-NEGATIVE BACTERIA." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 1, no. 1 (2019): 30–34. https://doi.org/10.5281/zenodo.2648364.

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<em>Many herbal remedies have so far been employed for the treatment and management of various ailments since the beginning of human civilization. TecomastansJuss. (Bignoniaceae) is a plant widely distributed in Mexico and frequently used for the treatment of Diabetes mellitus symptomatology.The aim of the review is to determine the antibacterial activity of </em><em> plant Tecomastans (family Bignoniaceae) using various crude extracts of it. Antibacterial activity was tested against both </em><em>Escherichia coli</em><em> (gram negative) and Lactobacillus (gram positive) bacteria us

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Firoz, Mansuri. "A Comprehensive Study of Bacterial Meningitis and its Effects on the Human Brain." Journal of Mental health, Psychiatric and Psychosocial Nursing 1, no. 1 (2023): 1–9. https://doi.org/10.5281/zenodo.7543930.

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<em>Meningitis is a serious infection that affects the protective layer surrounding the brain and spinal cord. This disease can be caused by bacteria, viruses and fungi. Meningococcal meningitis, caused by the bacteria Neisseria meningitidis, can cause large epidemics. </em><em>Meningococcal disease can infect a person of any age, but it is most often seen in children under the age of five, immunocompromised individuals, adolescents and young adults. Vaccination is a preventive measure against this deadly disease which can save lives and reduce complications. </em><em>In view of the alarming s

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Otte, Jan-Michel, and Daniel K. Podolsky. "Functional modulation of enterocytes by gram-positive and gram-negative microorganisms." American Journal of Physiology-Gastrointestinal and Liver Physiology 286, no. 4 (2004): G613—G626. http://dx.doi.org/10.1152/ajpgi.00341.2003.

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Clinical studies have suggested that so-called probiotic bacteria may be effective as therapy in inflammatory bowel disease. However, the molecular mechanisms of their interaction with the intestinal surface remain undefined. The influence of whole probiotic bacteria [ Escherichia coli Nissle 1917 (EcN); probiotic mixture VSL#3 (PM)], bacterial cell lysates, and conditioned media on transepithelial resistance (TER), IL-8 secretion, mucin gene expression, and tight junction proteins were determined in T84 and HT-29 intestinal epithelial cells (IEC). In addition, effects on pathogen ( Salmonella

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Buurman, Ed T., Kenneth D. Johnson, Roxanne K. Kelly, and Kathy MacCormack. "Different Modes of Action of Naphthyridones in Gram-Positive and Gram-Negative Bacteria." Antimicrobial Agents and Chemotherapy 50, no. 1 (2006): 385–87. http://dx.doi.org/10.1128/aac.50.1.385-387.2006.

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ABSTRACT Naphthyridones that were recently described as a class of translation inhibitors in gram-positive bacteria mediate their mode of action via GyrA in Haemophilus influenzae and Escherichia coli. These are the first examples of compounds in which modes of action in different bacterial pathogens are mediated through widely different targets.

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Wei, Wei, Jiurong Li, Zeyang Liu, et al. "Distinct antibacterial activity of a vertically aligned graphene coating against Gram-positive and Gram-negative bacteria." Journal of Materials Chemistry B 8, no. 28 (2020): 6069–79. http://dx.doi.org/10.1039/d0tb00417k.

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The distinct antibacterial mechanism of vertical graphene Si toward bacteria. Vertical graphene kills Gram-positive bacteria through physical disruption and Si substrate kills Gram-negative bacteria by extracting electrons from bacterial membranes.

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Divya, Sawant, Deshpande Punam, Shedge Vrushali, Phadke Manasi, Sahani Alpana, and Godbole Chinmai. "Antimicrobial activity of spices against Gram positive and Gram negative organisms." African Journal of Biological Sciences 3, no. 3 (2021): 37–40. https://doi.org/10.33472/AFJBS.3.3.2021.37-40.

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Since ancient times, spices are one of the important part of the human diet. In addition, it is used for providing flavor to food and also it possess various preservatives and medicinal values. Spices like turmeric, ginger and chilli exhibit antimicrobial properties. Turmeric is useful for home remedies and is now becoming a great research of interest for its anti-cancerous property. Even in Ayurveda spices are used as main ingredients for preparation of various medicines. This research aimed at studying antimicrobial activity of turmeric, ginger and chilli against Gram positive and Gram negat

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Al-Rawi, Marwa amin, Nada H. A. L. Al-Mudallal, and Ali A. Taha. "Iron Oxide Nanoparticles as Anti-Virulence Factors of Gram-positive and Gram-negative Bacteria." SAR Journal of Pathology and Microbiology 4, no. 04 (2023): 48–57. http://dx.doi.org/10.36346/sarjpm.2023.v04i04.003.

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Background: Due to their extensive use in medical therapy, iron oxide nanoparticles have recently attracted the attention of researchers in the field of increasing multi-resistance properties in bacterial pathogens. Because iron oxide nanoparticles have a high specific surface area, they can interact with bacterial surface structures and exhibit significant antibacterial activity. Objective: The current work, determined the effect of a novel anti-virulence factor agent which was created from iron oxide nanoparticles against selected gram-positive and gram-negative variant bacterial strains tha

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Putri, Neisya Intan Cahyaningtyas Agung, Ramadhani Ramadhani, and Eddy Bagus Wasito. "Gram Negative Bacteria (Escherichia coli) Win Against Gram Positive Bacteria (Staphylococcus aureus) in The Same Media." Biomolecular and Health Science Journal 4, no. 2 (2021): 113. http://dx.doi.org/10.20473/bhsj.v4i2.30177.

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Introduction: Biodiversity of the microorganism in Indonesia lead to the large amount of patient with infection. Human can get infected in two different place, with different kind of bacteria that cause the infection. This may lead to bacteremia without knowing which bacteria type whose causing it, either the Gram positive or Gram negative bacteria, whereas the treatment of this two types of bacteria are different. The aim of this study is to determine the doubling time of the Gram positive and Gram negative bacteria when they are grown in the same lesion and the kinds of bacteria that we need

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Ilbeigi, Ghazaleh, Ashraf Kariminik, and Mohammad Hasan Moshafi. "The Antibacterial Activities of NiO Nanoparticles Against Some Gram-Positive and Gram-Negative Bacterial Strains." International Journal of Basic Science in Medicine 4, no. 2 (2019): 69–74. http://dx.doi.org/10.15171/ijbsm.2019.14.

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Introduction: Given the increasing rate of antibiotic resistance among bacterial strains, many researchers have been working to produce new and efficient and inexpensive antibacterial agents. It has been reported that some nanoparticles may be used as novel antimicrobial agents.Here, we evaluated antibacterial properties of nickel oxide (NiO) nanoparticles. Methods: NiO nanoparticles were synthesized using microwave method. In order to control the quality and morphology of nanoparticles, XRD (X-ray diffraction) and SEM (scanning electronmicroscope) were utilized. The antibacterial properties o

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Grohmann, Elisabeth, Günther Muth, and Manuel Espinosa. "Conjugative Plasmid Transfer in Gram-Positive Bacteria." Microbiology and Molecular Biology Reviews 67, no. 2 (2003): 277–301. http://dx.doi.org/10.1128/mmbr.67.2.277-301.2003.

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SUMMARY Conjugative transfer of bacterial plasmids is the most efficient way of horizontal gene spread, and it is therefore considered one of the major reasons for the increase in the number of bacteria exhibiting multiple-antibiotic resistance. Thus, conjugation and spread of antibiotic resistance represents a severe problem in antibiotic treatment, especially of immunosuppressed patients and in intensive care units. While conjugation in gram-negative bacteria has been studied in great detail over the last decades, the transfer mechanisms of antibiotic resistance plasmids in gram-positive bac

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Leli, Christian, Marta Ferranti, Amedeo Moretti, Zainab Salim Al Dhahab, Elio Cenci, and Antonella Mencacci. "Procalcitonin Levels in Gram-Positive, Gram-Negative, and Fungal Bloodstream Infections." Disease Markers 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/701480.

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Procalcitonin (PCT) can discriminate bacterial from viral systemic infections and true bacteremia from contaminated blood cultures. The aim of this study was to evaluate PCT diagnostic accuracy in discriminating Gram-positive, Gram-negative, and fungal bloodstream infections. A total of 1,949 samples from patients with suspected bloodstream infections were included in the study. Median PCT value in Gram-negative (13.8 ng/mL, interquartile range (IQR) 3.4–44.1) bacteremias was significantly higher than in Gram-positive (2.1 ng/mL, IQR 0.6–7.6) or fungal (0.5 ng/mL, IQR 0.4–1) infections (P<0

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Mohammadpour, Bashir, Mohammad A. Boshagh, Bagher Hayati, Leila Farhadi, Hajar Kashefi, and Himen Salimizand. "Effect of Polypropylene Imine Nanocomposite on Gram-Positive and Gram-Negative Bacteria." Anti-Infective Agents 18, no. 2 (2020): 115–20. http://dx.doi.org/10.2174/2211352517666190215114534.

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Background: Nosocomial infection is a serious threat to hospitalized patients in healthcare when last-resort antibiotics do not act against pathogenic bacteria. Aims: The aim of this study was to study the effect of Polypropylene imine nanocomposite (PPI/CNT) on Gram-Positive and Gram-Negative bacteria. Methods: PPI/CNT component was produced. Surface morphology and structure of PPI/CNT were analyzed by Fourier-transform infrared (FTIR), Scanning Electron Microscopy (SAM) and Transmission Electron Microscopy (TEM). Minimum Inhibitory Concentration (MIC) of PPI/CNT was determined against variou

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Stancu, Mihaela Marilena, and Magdalena Grifoll. "Multidrug resistance in hydrocarbon-tolerant Gram-positive and Gram-negative bacteria." Journal of General and Applied Microbiology 57, no. 1 (2011): 1–18. http://dx.doi.org/10.2323/jgam.57.1.

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Shimaoka, Takeshi, Noriaki Kume, Manabu Minami, et al. "LOX-1 Supports Adhesion of Gram-Positive and Gram-Negative Bacteria." Journal of Immunology 166, no. 8 (2001): 5108–14. http://dx.doi.org/10.4049/jimmunol.166.8.5108.

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Vannini, Lucia, Maurice Ndagijimana, Pasquale Saracino, et al. "New signaling molecules in some gram-positive and gram-negative bacteria." International Journal of Food Microbiology 120, no. 1-2 (2007): 25–33. http://dx.doi.org/10.1016/j.ijfoodmicro.2007.02.028.

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Moln�r, J., J. Fischer, and M. J. Nakamura. "Mechanism of chlorpromazine binding by Gram-positive and Gram-negative bacteria." Antonie van Leeuwenhoek 62, no. 4 (1992): 309–14. http://dx.doi.org/10.1007/bf00572599.

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Lejars, Maxence, and Eliane Hajnsdorf. "The world of asRNAs in Gram-negative and Gram-positive bacteria." Biochimica et Biophysica Acta (BBA) - Gene Regulatory Mechanisms 1863, no. 2 (2020): 194489. http://dx.doi.org/10.1016/j.bbagrm.2020.194489.

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Thomson, C. J. "Trimethoprim and Brodimoprim Resistance of Gram-Positive and Gram-Negative Bacteria." Journal of Chemotherapy 5, no. 6 (1993): 458–64. http://dx.doi.org/10.1080/1120009x.1993.11741096.

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Garvey, Winsome, Arleen Fathi, Francine Bigelow, Blair Carpenter, and Carmencita Jimenez. "A Reliable Method for Demonstrating Gram-Positive and Gram-Negative Bacteria." Stain Technology 61, no. 4 (1986): 251–53. http://dx.doi.org/10.3109/10520298609109947.

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Punsalang, A., JM Heal, and PJ Murphy. "Growth of gram-positive and gram-negative bacteria in platelet concentrates." Transfusion 29, no. 7 (1989): 596–99. http://dx.doi.org/10.1046/j.1537-2995.1989.29789369676.x.

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Agak, G., N. Ceja-Garcia, P. Dang, et al. "070 Antimicrobial Th17CTL targeting both Gram-positive and Gram-negative bacteria." Journal of Investigative Dermatology 139, no. 5 (2019): S12. http://dx.doi.org/10.1016/j.jid.2019.03.146.

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Gül, Bahar Yavuztürk, Derya Yüksel Imer, Pyung-Kyu Park, and Ismail Koyuncu. "Selection of quorum quenching (QQ) bacteria for membrane biofouling control: effect of different Gram-staining QQ bacteria, Bacillus sp. T5 and Delftia sp. T6, on microbial population in membrane bioreactors." Water Science and Technology 78, no. 2 (2018): 358–66. http://dx.doi.org/10.2166/wst.2018.305.

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Abstract This study aimed to address the gap in understanding how the microbial community present within quorum quenching-membrane bioreactor (QQ-MBRs) changes during the operations by investigating the behavior of two different types of QQ bacteria, Bacillus sp. T5 and Delftia sp. T6. The anti-biofouling effects of T5 and T6 in the QQ-MBR were 85% and 76%, respectively. According to the Illumina HiSeq results, when the QQ-MBR was operated with Gram-positive bacteria, T5, in the mixed liquor a reduction was observed in Gram-positive bacteria and Gram-negative bacteria population increased. In

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Journal, Baghdad Science. "The Effect of Eruca sativa extract on Gram Posative and Negative Bacteria." Baghdad Science Journal 4, no. 3 (2007): 375–78. http://dx.doi.org/10.21123/bsj.4.3.375-378.

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The antibacterial effect of (Eruca sativa) extract was evaluated by an in vitro study testing the growth of various Gram-Positive and Gram-Negative bacteria . The bactericidal activity of this extract was analyzed by serial dilution in tubes. This study,found that Gram-Negative and Gram-Positive bacteria susceptible to very low eruca concentrations. On the other hand, Gram-positive bacteria were more susceptible than Gram-negative bacteria, the minimal bactericidal concentration of Gram-positive bacteria was 5 mg ml-1 but minimal bactericidal concentration of Gram-negative bacteria was 10 mg m

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Rashidi, Ghazal, and Elizabeth A. Ostrowski. "Phagocyte chase behaviours: discrimination between Gram-negative and Gram-positive bacteria by amoebae." Biology Letters 15, no. 1 (2019): 20180607. http://dx.doi.org/10.1098/rsbl.2018.0607.

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Phagocytes are cells that pursue, engulf and kill bacteria. They include macrophages and neutrophils of the mammalian immune system, as well as free-living amoebae that hunt and engulf bacteria for food. Phagocytosis can result in diverse outcomes, ranging from sustenance to infection and colonization by either pathogens or beneficial symbionts—and thus, discrimination may be necessary to seek out good bacteria while avoiding bad ones. Here we tested whether the soil amoeba Dictyostelium discoideum can discriminate among different types of bacteria using behavioural assays where amoebae were p

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