Relevant bibliographies by topics / Streptococcus agalactiae biochemical characteristics

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Academic literature on the topic 'Streptococcus agalactiae biochemical characteristics'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Streptococcus agalactiae biochemical characteristics"

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Kawamura, Yoshiaki, Yoko Itoh, Noriko Mishima, Kiyufumi Ohkusu, Hiroaki Kasai, and Takayuki Ezaki. "High genetic similarity of Streptococcus agalactiae and Streptococcus difficilis: S. difficilis Eldar et al. 1995 is a later synonym of S. agalactiae Lehmann and Neumann 1896 (Approved Lists 1980)." International Journal of Systematic and Evolutionary Microbiology 55, no. 2 (2005): 961–65. http://dx.doi.org/10.1099/ijs.0.63403-0.

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The genetic relationship between Streptococcus agalactiae and Streptococcus difficilis was studied. S. difficilis was originally described as serologically non-typable but was later reported to be a group B, type Ib streptococcus. Upon comparative analysis of five gene sequences, it was found that S. agalactiae and S. difficilis are closely related. Sequence similarity values between these two species were 100·0 % for 16S rRNA, 99·6 % for gyrB, 98·6 % for sodA, 99·5 % for gyrA and 99·8 % for parC genes. These data strongly suggest that S. agalactiae and S. difficilis are synonyms. The biochemi
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Jobin, T., P. Harikrishna, B. Sreenath, L. Gian, L. Goncalo, and J. Siju. "Identification of an unusual Streptococcus agalactiae growing on MacConkey Agar and its confirmation by biochemical tests, qPCR and nanopore sequencing." Journal of Veterinary and animal sciences 55, no. 4 (2024): 675–79. https://doi.org/10.51966/jvas.2024.55.4.675-679.

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Streptococcus agalactiae belongs to Group B Streptococcus (GBS), an important Gram-positive pathogen attributed to mastitis and elevated somatic cell counts (SCC) in dairy cows, which invariably exhibits complete β-haemolysis on blood agar (BA) / Polymixin Nalidixic acid Blood Agar (PNBA) and fails to grow on MacConkey agar (MCA). The present study conducted in the Advanced Agricultural Laboratories under the Almarai company, Riyadh, KSA, reports the isolation, identification and characterization of β-haemolytic Strepotococcus agalactiae which exhibited lactose fermenting colonies on MCA. Thou
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Nafiqoh, Nunak, Hessy Novita, Desy Sugiani, et al. "Aeromonas hydrophila AHL 0905-2 and Streptococcus agalactiae N14G as Combined Vaccine Candidates for Nile Tilapia." HAYATI Journal of Biosciences 29, no. 2 (2022): 137–45. http://dx.doi.org/10.4308/hjb.29.2.137-145.

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In Indonesia, the Nile tilapia (Oreochromis niloticus) is the most widely farmed and available fish for consumption. Production loss due to bacterial infection by Aeromonas hydrophila and Streptococcus agalactiae is the main problem in tilapia cultivation. This study aimed to determine the occurrence of concurrent infection of Aeromonas hydrophila AHL 0905-2 and Streptococcus agalactiae N14G in Nile tilapia based on biochemical and molecular characteristics. From the results of biochemical assay and sequence analysis of the 16S rRNA fragment, Aeromonas hydrophila and Streptococcus agalactiae w
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Lusiastuti, Angela Mariana, Lila Gardenia, Tatik Mufidah, and Yani Aryati. "Streptococcus agalactiae INFECTION ON TILAPIA (Oreochromis niloticus) IN CIRATA RESERVOIR, WEST JAVA." Indonesian Aquaculture Journal 4, no. 1 (2009): 47. http://dx.doi.org/10.15578/iaj.4.1.2009.47-51.

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Streptococcosis is one of bacterial diseases in the culture of Tilapia, Oreochromis niloticus and has caused significant economic losses. Streptococcus iniae, is known as pathogen to marine and freshwater fishes whereas Streptococcus agalactiae is known as pathogen to Tilapia. The isolation and characterization of four isolates of S. agalactiae, were described from an infected Tilapia from Cirata Reservoir, West Java, in July 2008. Conventional and rapid identification systems were used to determine isolates of S. agalactiae from brain and kidney tissues. In this paper, we have characterized S
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Gan, ZiXuen, Pei Qin Tan, Murni Halim, et al. "Characterization of Streptococcus agalactiae Strain TP540K and Its Potential as a Target for DNA Aptamer Development in the Preliminary Stage of Whole-Cell Based SELEX." Journal of Environmental Microbiology and Toxicology 12, no. 2 (2024): 31–37. https://doi.org/10.54987/jemat.v12i2.1010.

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Streptococcus outbreak caused mainly by Streptococcus agalactiae leads to massive mortalities of freshwater aquatic organisms, especially cultured tilapias. This has caused a huge concern in the Malaysian aquaculture industry due to a lower aquaculture production affected by the outbreak. Thus, there is a need for a rapid and simple method to detect and monitor S. agalactiae in cultured fishponds. This study aims to investigate the characteristics of a local S. agalactiae strain TP540K and its potential as a target bacterium to develop DNA aptamer through the whole-cell based ‘systematic evolu
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Rarassari, Madyasta, and Marsela Aprilia. "Case report; Identification of Bacteria in Catfish (Pangasius sp.) at the Palembang Fish Quarantine Station." Journal of Aquaculture Science 9, no. 1 (2024): 23–29. http://dx.doi.org/10.20473/joas.v9i1.53385.

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One of the causes of disease attacks can be caused by bacteria, two of which are Edwardsiella ictaluri and Streptococcus agalactiae which often attack catfish. One of the causes of disease attacks can be caused by bacteria, two of which are Edwardsiella ictaluri and Streptococcus agalactiae which often attack catfish. Disease attacks can be prevented as early as possible by periodically identifying certain bacteria so that it can facilitate appropriate treatment to prevent them. This activity aimed to study bacterial identification techniques in catfish (Pangasius sp.) at the Fish Quarantine S
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Haneen Kadhum Abdul-Hamza and Ghaidaa Jihadi Mohammed. "Identification of Streptococcus agalactiae isolated from pregnant women by 16srRNA gene." International Journal of Research in Pharmaceutical Sciences 10, no. 2 (2019): 1523–26. http://dx.doi.org/10.26452/ijrps.v10i2.783.

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The main goal of the current study is to isolate and diagnose of Streptococcus agalactiae by using the diagnostic 16 SrRNA gene. S.agalactiae was isolated from 850 samples including (425) vaginal swabs, (425) rectal swabs and identified by studying the morphological characteristics of colonies on culture, microscopic characteristics of bacterial cells, biochemical methods, Vitek 2 system, API-20 Strep, and then confirmed the identification by detection of 16SrRNA gene by Polymerase Chain reaction (PCR) followed by DNA Sequence analysis for this gene. A total of 16 isolates of S.agalactiae were
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Ganesh, Phaniraj K. L., Rajasekhar P., and Prabha R. "Biochemical Characteristics of Bacterial Isolates Obtained from Bovine Mastitic Milk Samples." Journal of Advances in Microbiology 24, no. 9 (2024): 37–47. http://dx.doi.org/10.9734/jamb/2024/v24i9850.

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Aim: Bovine mastitis affects the milk production in milking cattle and the milk producer. The major causative organism of mastitis includes the bacteria. The present study is focused on the identification of bacterial isolates obtained from milk samples of bovine mastitis based on their biochemical activities. Study Design: The bacterial isolates obtained from California mastitis test positive milk samples of in and around Bengaluru district, Karnataka were collected from Department of Veterinary Microbiology, Veterinary College, KVAFSU, Bengaluru, Karnataka and subjected to staining for morph
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Salvador, Rogério, Ernst Eckehardt Muller, Julio César de Freitas, Julio Hermann Leonhadt, Lucienne Garcia Pretto-Giordano, and Juliana Alves Dias. "Isolation and characterization of Streptococcus spp. group B in Nile tilapias (Oreochromis niloticus) reared in hapas nets and earth nurseries in the northern region of Parana State, Brazil." Ciência Rural 35, no. 6 (2005): 1374–78. http://dx.doi.org/10.1590/s0103-84782005000600023.

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The objective of this study was to isolate and characterize Streptococcus spp. in Nile tilapias (Oreochromis niloticus) reared in net-pens and earth nurseries. Eight intensive tilapia-rearing farms were investigated in north Paraná, Brazil from April 1st 2001 to April 30th 2002. The fish were reared in a system of hapas nets on four farms and in earth nurseries on other four farms. A total of 370 samples were analyzed of material collected from 120 fish (brain, liver, kidney, skin scrapes, ascites liquid and eye) that were sown on BHI agar (Brain Heart Infusion) supplemented with 1% yeast extr
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Richards, Vincent P., Irina M. Velsko, Md Tauqeer Alam, et al. "Population Gene Introgression and High Genome Plasticity for the Zoonotic Pathogen Streptococcus agalactiae." Molecular Biology and Evolution 36, no. 11 (2019): 2572–90. http://dx.doi.org/10.1093/molbev/msz169.

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Abstract The influence that bacterial adaptation (or niche partitioning) within species has on gene spillover and transmission among bacterial populations occupying different niches is not well understood. Streptococcus agalactiae is an important bacterial pathogen that has a taxonomically diverse host range making it an excellent model system to study these processes. Here, we analyze a global set of 901 genome sequences from nine diverse host species to advance our understanding of these processes. Bayesian clustering analysis delineated 12 major populations that closely aligned with niches.
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Dissertations / Theses on the topic "Streptococcus agalactiae biochemical characteristics"

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Thompson, Catriona M. A. "The biochemical and biophysical characterisation of protein antibiotics targeting Pectobacterium spp. and Streptococcus agalactiae." Thesis, University of Glasgow, 2019. http://theses.gla.ac.uk/41021/.

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Food security is the idea by which a population has enough food to sustain itself without famine. A large number of factors can influence the stability of food production, including diseases caused by microorganisms. Pectobacterium spp. is one of the leading causes of soft rot disease, resulting in crop losses both pre- and post-harvest. Bacteriocins are potent narrow spectrum protein antibiotics which target closely related bacteria to the producing strain. Ferredoxin-containing bacteriocins produced by and targeted towards Pectobacterium species have both a different domain organisation and
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Yang, Chen Shan, and 楊振杉. "Studies on the stability and expression characteristics of surface protein "X" on Streptococcus agalactiae." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/35201473286625891236.

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碩士<br>國立中興大學<br>獸醫學系<br>84<br>Streptococcus agalactiae (SA), which was often isolated from bovine mammary gland, is one of the major pathogens causing bovine mastitis. In order to study the optimum expression conditions and the stability of surface protein "X" on SA, we at inital step isolated it by employing hot-acid extraction method followed with the FPLC purification. A protein with molecular weight of ca. 100 kDa was then identified as "X" protein by a SDS-PAGE analysis.Serum containin
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Book chapters on the topic "Streptococcus agalactiae biochemical characteristics"

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Stevens, Dennis L., J. Anthony Mebane, and Karl Madaras-Kelly. "Streptococcus groups A, B, C, D, and G." In Schlossberg's Clinical Infectious Disease, edited by Cheston B. Cunha. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780190888367.003.0150.

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This chapter explores how Lancefield divided streptococci into groups based on carbohydrates present in the cell wall and designated the groups A through H and K through T. It discusses the classification of streptococci according to their characteristics on culture on sheep blood agar. It also mentions β‎-Hemolytic streptococci that produce zones of clear hemolysis around each colony and α‎-hemolytic streptococci that produce a green discoloration characteristic of incomplete hemolysis. The chapter includes Streptococcus pyogenes, which is the sole member of Lancefield group A, and Streptococ
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Al-Rubaeaee, AzalA, Zahraa Ch. Hameed, and Sara Al-Tamemi. "Estimation of Some Plant Extract Activity Against Bacterial Cystitis Isolated from Urinary Tract Infection." In Bladder Cancer [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.107514.

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In this study, 60 urine samples were collected from patients with urinary tract infections who were admitted to Al-Hussein Teaching Hospital between December and February of 2018–2019. A urine sample was collected for culture and crystal formation. Only 57 (95 percent) of the 60 samples on culture were isolated from urinary tract infections caused by various causes. According to the results of the isolation and laboratory diagnosis, as well as biochemical tests, Staphylococcus saprophyticus, Streptococcus agalactiae, Escherichia coli, Klebsiella pneumonia, proteus spp., Morganella morgani, and
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Thieu, Thanh Trang, Thi Thuy Trang Ngo, and Thi Thu Hoai Nguyen. "GRAM-POSITIVE BACTERIAL PATHOGENS." In Microbes of Medical Importance. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/nbennurmmch3.

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Gram-positive pathogens possess various advantageous characteristics and mechanisms that allow them to adhere to, colonize, and attack host cells. They are capable of inducing a spectrum of illnesses, ranging from mild gastrointestinal distress and pharyngitis to severe pulmonary infections and nervous system-related diseases. Within this spectrum, a significant number progress to highly lethal acute infections, exhibiting case fatality rates as high as 80% in certain instances. This chapter will introduce to you the morphological, biochemical and molecular distinct properties, the culture con
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Antwi, Maxwell Hubert, Francisca Serwaa Adomako, Samuel Adomako Ocrah, Dorcas Serwaa, Aaron Siaw Kwakye, and Isaac Darban. "Commonly Used Public Facility Devices as Potential Sources of Infections." In Technological Innovation Driving Sustainable Entrepreneurial Growth in Developing Nations. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-9843-9.ch009.

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Surfaces and devices in public institutions are likely to be contaminated with various microorganisms as people congregate there for various reasons. Swab samples from devices like ATMs, seats, teller counters, door handles, pens, writing desks, toilet flush handles, and tap heads were obtained from banks and churches. 60 samples in all were cultured and isolates were identified using Gram stain reaction, morphological, and biochemical characteristics. Results indicated a 100% microbial contamination on all surfaces with Staphylococcus aureus having the highest frequency, 35(31.5%). Bacilli sp
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Conference papers on the topic "Streptococcus agalactiae biochemical characteristics"

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Anwer, Sewgil, Kawther Saeed, Muzhda Qader, et al. "Microbiological Analysis of Tissue Paper Pre- and Post-Exposure in Restrooms and its effects to women’s health." In 4th Scientific Conference on Women’s Health. Hawler Medical University, 2025. https://doi.org/10.15218/crewh.2024.07.

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Back ground and Objectives: Toilet tissue paper are sanitary paper that comes into direct contact with the body but at the same time they are a good place for growth of microorganism. The objective of this study was to isolate, identify and evaluate the presence or absence of bacterial and fungal contaminants present on tissue paper remained in toilets. Methods: Ten toilet tissue paper brands commercially available in Erbil City were tested for bacterial and fungal examination before placing them in toilet (zero time) and after placing them in five (5) different sites that determined within th
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