Journal of Microbiology

Journal Articles

Probiotic supplements alleviate gestational diabetes mellitus by restoring the diversity of gut microbiota: a study based on 16S rRNA sequencing: Qing-Xiang Zheng , Xiu-Min Jiang , Hai-Wei Wang , Li Ge , Yu-Ting Lai , Xin-Yong Jiang , Fan Chen , Ping-Ping Huang; J. Microbiol. 2021;59(9):827-839. Published online August 12, 2021; DOI: https://doi.org/10.1007/s12275-021-1094-8

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Probiotics effectively prevent and improve metabolic diseases such as diabetes by regulating the intestinal microenvironment and gut microbiota. However, the effects of probiotics in gestational diabetes mellitus are not clear. Here, we showed that probiotic supplements significantly improved fasting blood glucose in a gestational diabetes mellitus rat model. To further understand the mechanisms of probiotics in gestational diabetes mellitus, the gut microbiota were analyzed via 16S rRNA sequencing. We found that compared with the normal pregnant group, the gestational diabetes mellitus rats had decreased diversity of gut microbiota. Moreover, probiotic supplementation restored the diversity of the gut microbiota in gestational diabetes mellitus rats, and the gut microbiota structure tended to be similar to that of normal pregnant rats. In particular, compared with gestational diabetes mellitus rats, the abundance of Firmicutes and Actinobacteria was higher after probiotic supplementation. Furthermore, activating carbohydrate metabolism and membrane transport pathways may be involved in the potential mechanisms by which probiotic supplements alleviate gestational diabetes mellitus. Overall, our results suggested that probiotic supplementation might be a novel approach to restore the gut microbiota of gestational diabetes mellitus rats and provided an experimental evidence for the use of probiotic supplements to treat gestational diabetes melitus.

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Dietary Polyphenols Support Akkermansia muciniphila Growth via Mediation of the Gastrointestinal Redox Environment
Charlene B. Van Buiten, Valerie A. Seitz, Jessica L. Metcalf, Ilya Raskin
Antioxidants.2024; 13(3): 304. CrossRef
The Intervention of Probiotics on Type 2 Diabetes Mellitus in Animal Models
Qianyu Qu, Penggang He, Yuqi Zhang, Shujuan Yang, Peibin Zeng
Molecular Nutrition & Food Research.2024;[Epub] CrossRef
Lactobacillus gasseri BNR17 and Limosilactobacillus fermentum ABF21069 Ameliorate High Sucrose-Induced Obesity and Fatty Liver via Exopolysaccharide Production and β-oxidation
Yu Mi Jo, Yoon Ji Son, Seul-Ah Kim, Gyu Min Lee, Chang Won Ahn, Han-Oh Park, Ji-Hyun Yun
Journal of Microbiology.2024; 62(10): 907. CrossRef
Probiotic therapy as a promising strategy for gestational diabetes mellitus management
Deborah Emanuelle de Albuquerque Lemos, José Luiz de Brito Alves, Evandro Leite de Souza
Expert Opinion on Biological Therapy.2024; 24(11): 1207. CrossRef
Influence of Symbiotic Fermentation Broth on Regulating Metabolism with Gut Microbiota and Metabolite Profiles Is Estimated Using a Third-Generation Sequencing Platform
Chih-Yin Wu, Chun-Kai Huang, Wei-Sheng Hong, Yin-Hsiu Liu, Ming-Chi Shih, Jung-Chun Lin
Metabolites.2023; 13(9): 999. CrossRef
Neuroprotective Effect of Ponicidin Alleviating the Diabetic Cognitive Impairment: Regulation of Gut Microbiota
Xiaojuan Zhang, Feng Guo, Dujuan Cao, Yinan Yan, Ning Zhang, Kaili Zhang, Xinyi Li, Prashant Kumar, Xiaojuan Zhang
Applied Biochemistry and Biotechnology.2023; 195(2): 735. CrossRef
Antidiabetogenic mechanisms of probiotic action in food matrices: A review
Vanessa Moraes Ramalho Castro, Rosa Helena Luchese
PharmaNutrition.2022; 21: 100302. CrossRef
Prepregnancy body mass index and gestational weight gain are associated with maternal and infant adverse outcomes in Chinese women with gestational diabetes
Qing-Xiang Zheng, Hai-Wei Wang, Xiu-Min Jiang, Yan Lin, Gui-Hua Liu, Mian Pan, Li Ge, Xiao-Qian Chen, Jing-Ling Wu, Xiao-Yun Zhang, Yu-Qing Pan, Hong-Gu He
Scientific Reports.2022;[Epub] CrossRef
Probiotic Intervention in the Treatment of Diabetes Mellitus: A Review
Navya Sreepathi, M.K. Jayanthi, S. Jagadeep Chandra, Shrisha Naik Bajpe, Ramith Ramu
Journal of Pure and Applied Microbiology.2022; 16(3): 1519. CrossRef
Ameliorative Effects of Bifidobacterium animalis subsp. lactis J-12 on Hyperglycemia in Pregnancy and Pregnancy Outcomes in a High-Fat-Diet/Streptozotocin-Induced Rat Model
Jianjun Yang, Yumeng Ma, Tong Li, Yuanxiang Pang, Hongxing Zhang, Yuanhong Xie, Hui Liu, Yanfang Sun, Jianhua Ren, Junhua Jin
Nutrients.2022; 15(1): 170. CrossRef
Probiotic Mechanisms Affecting Glucose Homeostasis: A Scoping Review
Maša Pintarič, Tomaž Langerholc
Life.2022; 12(8): 1187. CrossRef
The Roles of Probiotics in the Gut Microbiota Composition and Metabolic Outcomes in Asymptomatic Post-Gestational Diabetes Women: A Randomized Controlled Trial
Zubaidah Hasain, Raja Affendi Raja Ali, Hajar Fauzan Ahmad, Ummul Fahri Abdul Rauf, Seok Fang Oon, Norfilza Mohd Mokhtar
Nutrients.2022; 14(18): 3878. CrossRef
Changes in the Gut Metabolic Profile of Gestational Diabetes Mellitus Rats Following Probiotic Supplementation
Qing-Xiang Zheng, Hai-Wei Wang, Xiu-Min Jiang, Li Ge, Yu-Ting Lai, Xin-Yong Jiang, Ping-Ping Huang, Fan Chen, Xiao-Qian Chen
Frontiers in Microbiology.2022;[Epub] CrossRef
Microorganisms in the reproductive system and probiotic's regulatory effects on reproductive health
Tao Feng, Yan Liu
Computational and Structural Biotechnology Journal.2022; 20: 1541. CrossRef
Several Shaping Characteristics of OneCurve Continuously Rotating System versus Three Different Kinematic Systems: ProTaper Universal, Twisted File Adaptive and WaveOne Gold
Ali Türkyılmaz, Volkan Arıkan
Meandros Medical and Dental Journal.2022; 23(1): 67. CrossRef

STATR: A simple analysis pipeline of Ribo-Seq in bacteria: Donghui Choe , Bernhard Palsson , Byung-Kwan Cho; J. Microbiol. 2020;58(3):217-226. Published online January 28, 2020; DOI: https://doi.org/10.1007/s12275-020-9536-2

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Abstract

Gene expression changes in response to diverse environmental stimuli to regulate numerous cellular functions. Genes are expressed into their functional products with the help of messenger RNA (mRNA). Thus, measuring levels of mRNA in cells is important to understand cellular functions. With advances in next-generation sequencing (NGS), the abundance of cellular mRNA has been elucidated via transcriptome sequencing. However, several studies have found a discrepancy between mRNA abundance and protein levels induced by translational regulation, including different rates of ribosome entry and translational pausing. As such, the levels of mRNA are not necessarily a direct representation of the protein levels found in a cell. To determine a more precise way to measure protein expression in cells, the analysis of the levels of mRNA associated with ribosomes is being adopted. With an aid of NGS techniques, a single nucleotide resolution footprint of the ribosome was determined using a method known as Ribo- Seq or ribosome profiling. This method allows for the highthroughput measurement of translation in vivo, which was further analyzed to determine the protein synthesis rate, translational pausing, and cellular responses toward a variety of environmental changes. Here, we describe a simple analysis pipeline for Ribo-Seq in bacteria, so-called simple translatome analysis tool for Ribo-Seq (STATR). STATR can be used to carry out the primary processing of Ribo-Seq data, subsequently allowing for multiple levels of translatome study, from experimental validation to in-depth analyses. A command- by-command explanation is provided here to allow a broad spectrum of biologists to easily reproduce the analysis.

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Translation in Bacillus subtilis is spatially and temporally coordinated during sporulation
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Nature Communications.2024;[Epub] CrossRef
Comparative Transcriptome Analysis of Zerumbone-Treated Helicobacter pylori
Hyun Jun Woo, Ji Yeong Yang, Sa-Hyun Kim
Microbiology and Biotechnology Letters.2022; 50(2): 301. CrossRef
Synthetic 3′-UTR valves for optimal metabolic flux control in Escherichia coli
Donghui Choe, Kangsan Kim, Minjeong Kang, Seung-Goo Lee, Suhyung Cho, Bernhard Palsson, Byung-Kwan Cho
Nucleic Acids Research.2022; 50(7): 4171. CrossRef
Comparative Transcriptome Analysis of Caryophyllene- Treated Helicobacter pylori
Hyun Jun Woo, Ji Yeong Yang, Hye Jin Kwon, Hyun Woo Kim, Sa-Hyun Kim, Jong-Bae Kim
Microbiology and Biotechnology Letters.2021;[Epub] CrossRef
RiboRid: A low cost, advanced, and ultra-efficient method to remove ribosomal RNA for bacterial transcriptomics
Donghui Choe, Richard Szubin, Saugat Poudel, Anand Sastry, Yoseb Song, Yongjae Lee, Suhyung Cho, Bernhard Palsson, Byung-Kwan Cho, Lefu Lan
PLOS Genetics.2021; 17(9): e1009821. CrossRef
Omics-based microbiome analysis in microbial ecology: from sequences to information
Jang-Cheon Cho
Journal of Microbiology.2021; 59(3): 229. CrossRef
HRIBO: high-throughput analysis of bacterial ribosome profiling data
Rick Gelhausen, Sarah L Svensson, Kathrin Froschauer, Florian Heyl, Lydia Hadjeras, Cynthia M Sharma, Florian Eggenhofer, Rolf Backofen, Valencia Alfonso
Bioinformatics.2021; 37(14): 2061. CrossRef
User guides for biologists to learn computational methods
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Cyanobacterial biodiversity of semiarid public drinking water supply reservoirs assessed via next-generation DNA sequencing technology: Adriana Sturion Lorenzi , Mathias Ahii Chia , Fabyano Alvares Cardoso Lopes , Genivaldo Gueiros Z. Silva , Robert A. Edwards , Maria do Carmo Bittencourt-Oliveira; J. Microbiol. 2019;57(6):450-460. Published online May 27, 2019; DOI: https://doi.org/10.1007/s12275-019-8349-7

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Abstract

Next-generation DNA sequencing technology was applied to generate molecular data from semiarid reservoirs during well-defined seasons. Target sequences of 16S-23S rRNA ITS and cpcBA-IGS were used to reveal the taxonomic groups of cyanobacteria present in the samples, and genes coding for cyanotoxins such as microcystins (mcyE), saxitoxins (sxtA), and cylindrospermopsins (cyrJ) were investigated. The presence of saxitoxins in the environmental samples was evaluated using ELISA kit. Taxonomic analyses of high-throughput DNA sequencing data showed the dominance of the genus Microcystis in Mundaú reservoir. Furthermore, it was the most abundant genus in the dry season in Ingazeira reservoir. In the rainy season, 16S-23S rRNA ITS analysis revealed that Cylindrospermopsis raciborskii comprised 46.8% of the cyanobacterial community in Ingazeira reservoir, while the cpcBAIGS region revealed that C. raciborskii (31.8%) was the most abundant taxon followed by Sphaerospermopsis aphanizomenoides (17.3%) and Planktothrix zahidii (16.6%). Despite the presence of other potential toxin-producing genera, the detected sxtA gene belonged to C. raciborskii, while the mcyE gene belonged to Microcystis in both reservoirs. The detected mcyE gene had good correlation with MC content, while the amplification of the sxtA gene was related to the presence of STX. The cyrJ gene was not detected in these samples. Using DNA analyses, our results showed that the cyanobacterial composition of Mundaú reservoir was similar in successive dry seasons, and it varied between seasons in Ingazeira reservoir. In addition, our data suggest that some biases of analysis influenced the cyanobacterial communities seen in the NGS output of Ingazeira reservoir.

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Review

[MINIREVIEW] Progress of analytical tools and techniques for human gut microbiome research: Eun-Ji Song , Eun-Sook Lee , Young-Do Nam; J. Microbiol. 2018;56(10):693-705. Published online September 28, 2018; DOI: https://doi.org/10.1007/s12275-018-8238-5

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Abstract

Massive DNA sequencing studies have expanded our insights and understanding of the ecological and functional characteristics of the gut microbiome. Advanced sequencing technologies allow us to understand the close association of the gut microbiome with human health and critical illnesses. In the future, analyses of the gut microbiome will provide key information associating with human individual health, which will help provide personalized health care for diseases. Numerous molecular biological analysis tools have been rapidly developed and employed for the gut microbiome researches; however, methodological differences among researchers lead to inconsistent data, limiting extensive share of data. It is therefore very essential to standardize the current
method
ologies and establish appropriate pipelines for human gut microbiome research. Herein, we review the methods and procedures currently available for studying the human gut microbiome, including fecal sample collection, metagenomic DNA extraction, massive DNA sequencing, and data analyses with bioinformatics. We believe that this review will contribute to the progress of gut microbiome research in the clinical and practical aspects of human health.

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Journal Article

Calculibacillus koreensis gen. nov., sp. nov., an anaerobic Fe(III)-reducing bacterium isolated from sediment of mine tailings: Ui-Gi Min , So-Jeong Kim , Heeji Hong , Song-Gun Kim , Joo-Han Gwak , Man-Young Jung , Jong-Geol Kim , Jeong-Geol Na , Sung-Keun Rhee; J. Microbiol. 2016;54(6):413-419. Published online May 27, 2016; DOI: https://doi.org/10.1007/s12275-016-6086-8

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Abstract

A strictly anaerobic bacterium, strain B5T, was isolated from sediment of an abandoned coal mine in Taebaek, Republic of Korea. Cells of strain B5T were non-spore-forming, straight, Gram-positive rods. The optimum pH and temperature for growth were pH 7.0 and 30°C, respectively, while the strain was able to grow within pH and temperature ranges of 5.5– 7.5 and 25–45°C, respectively. Growth of strain B5T was observed at NaCl concentrations of 0 to 6.0% (w/v) with an optimum at 3.0–4.0% (w/v). The polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol, an unknown phospholipid and three unknown polar lipids. Strain B5T grew anaerobically by reducing nitrate, nitrite, ferric-citrate, ferric-nitrilotriacetate, elemental sulfur, thiosulfate, and anthraquinone- 2-sulfonate in the presence of proteinaceous compounds, organic acids, and carbohydrates as electron donors. The isolate was not able to grow by fermentation. Strain B5T did not grow under aerobic or microaerobic conditions. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain B5T is most closely related to the genus Tepidibacillus (T. fermentans STGHT; 96.3%) and Vulcanibacillus (V. modesticaldus BRT; 94.6%). The genomic DNA G+C content (36.9 mol%) of strain B5T was higher than those of T. fermentans STGHT (34.8 mol%) and V. modesticaldus BRT (34.5 mol%). Based on its phenotypic, chemotaxonomic, and phylogenetic properties, we describe a new species of a novel genus Calculibacillus, represented by strain B5T (=KCTC 15397T =JCM 19989T), for which we propose the name Calculibacillus koreensis gen. nov., sp. nov.

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Fungal Community Associated with Genetically Modified Poplar During Metal Phytoremediation: Moonsuk Hur , Young Woon Lim , Jae Jeong Yu , Se Uk Cheon , Young Im Choi , Seok-Hwan Yoon , Sang-Cheol Park , Dong-Il Kim , Hana Yi; J. Microbiol. 2012;50(6):910-915. Published online December 30, 2012; DOI: https://doi.org/10.1007/s12275-012-2491-9

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Abstract: Due to the increasing demand for phytoremediation, many transgenic poplars have been developed to enhance the bioremediation of heavy metals. However, structural changes to indigenous fungal communities by genetically modified organisms (GMO) presents a major ecological issue, due to the important role of fungi for plant growth in natural environments. To evaluate the effect of GM plant use on environmental fungal soil communities, extensive sequencing-based community analysis was conducted, while controlling the influence of plant clonality, plant age, soil condition, and harvesting season. The rhizosphere soils of GM and wild type (WT) poplars at a range of growth stages were sampled together with unplanted, contaminated soil, and the fungal community structures were investigated by pyrosequencing the D1/D2 region of the 28S rRNA gene. The results show that the overall structure of the rhizosphere fungal community was not significantly influenced by GM poplars. However, the presence of GM specific taxa, and faster rate of community change during poplar growth, appeared to be characteristic of the GM plant-induced effects on soil-born fungal communities. The results of this study provide additional information about the potential effects of GM poplar trees aged 1.5–3 years, on the soil fungal community.

Scopulibacillus darangshiensis gen. nov., sp. nov., Isolated from Rock: Soon Dong Lee , Dong Wan Lee; J. Microbiol. 2009;47(6):710-715. Published online February 4, 2010; DOI: https://doi.org/10.1007/s12275-009-0111-0

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Abstract: A novel, Gram-positive bacterium, designated DLS-06T, was isolated from scoria (volcanic ash) under rock on the peak of small mountain (300 m above the sea level; known as Darangshi Oreum) in Jeju, Republic of Korea. The cells of the isolate were aerobic, oxidase-negative, catalase-positive, endospore- forming, non-motile rods. The organism grew at 25~30°C and initial pH 6.1~9.1. A neighbour-joining tree based on 16S rRNA gene sequences showed that the organism was related to members of the family “Sporolactobacillaceae” and related taxa. The phylogenetic neighbours were Pullulanibacillus naganoensis (95.2% 16S rRNA gene sequence similarity), Tuberibacillus calidus (95.0%) and Sporolactobacillus (91.8~94.2%). Levels of 16S rRNA gene sequence similarity of the isolate to representatives of other genera were in the range of 87.2~93.7%. The organism contained meso-diaminopimelic acid as the diagnostic diamino acid in the cell-wall peptidoglycan. The predominant menaquinone was MK-7. The polar lipid profile contained diphosphatidylglycerol, phosphatidylglycerol, an unknown ninhydrin-positive phospholipid, three unknown phospholipids and an unknown lipid. The major fatty acids were anteiso-C15:0 and anteiso-C17:0. The G+C content of the DNA was 50.8 mol%. On the basis of the phenotypic and phylogenetic data presented in this study, this organism represents a novel genus and species in the order Bacillales, for which the name Scopulibacillus darangshiensis gen. nov., sp. nov. is proposed. The type strain is DLS-06T (=DSM 19377T =KCTC 13161T).

Bacterial Diversity at Different Depths in Lead-Zinc Mine Tailings as Revealed by 16S rRNA Gene Libraries: Han-Bo Zhang , Wen Shi , Ming-Xia Yang , Tao Sha , Zhi-Wei Zhao; J. Microbiol. 2007;45(6):479-484.; DOI: https://doi.org/2648 [pii]

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Abstract: Bacterial communities at 10 cm, 100 cm, and 200 cm depths in a 100-year-old lead-zinc tailing heap were evaluated by constructing 16S rRNA gene libraries. In total, 98 operational taxonomic units (OTUs) were identified from 193 clones at a 3% sequence difference level. The OTU number and species richness decreased with the depth. Species composition was significantly different between the three libraries. Fifty-seven percent of the examined clones were Acidobacteria and 27% belonged to Proteobacteria. Other sequences included Chloroflexi, Firmicutes, Chlamydiae, Actinobacteria, Gemmatimonadetes, Nitrospira, and three unclassified OTUs. Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Firmicutes, and Actinobacteria were mainly distributed in the rhizosphere of naturally colonizing plants; however, Deltaproteobacteria, Acidobacteria, and Chloroflexi tended to inhabit the deeper tailings (below the 100 cm-depth).

Differential Response of Etiolated Pea Seedlings to Inoculation with Rhizobacteria Capable of Utilizing 1-Aminocyclopropane-1-Carboxylate or L-Methionine: Baby Shaharoona , Muhammad Arshad , Azeem Khalid; J. Microbiol. 2007;45(1):15-20.; DOI: https://doi.org/2497 [pii]

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Abstract: The majority of soil microorganisms can derive ethylene from L-methionine (L-MET), while some rhizobacteria can hydrolyze 1-aminocyclopropane-1-carboxylate (ACC) due to their ACC-deaminase activity. In this study, three strains having either ACC-deaminase activity (Pseudomonas putida biotype A, A7), or the ability to produce ethylene from L-MET (Acinetobacter calcoaceticus, M9) or both (Pseudomonas fluorescens, AM3) were used for inoculation. The highly ethylene specific bioassay of a classical “triple” response in pea seedlings was used to investigate the effect of the inoculation with the rhizobacteria in the presence of 10 mM ACC or L-MET. The exogenous application of ACC had a concentration-dependent effect on the etiolated pea seedlings in creating the classical “triple” response. The inoculation with P. putida diluted the effect of ACC, which was most likely due to its ACC-deaminase activity. Similarly, the application of Co2+ reduced the ACC-imposed effect on etiolated pea seedlings. In contrast, the inoculation of A. calcoaceticus or P. fluorescens in the presence of L-MET caused a stronger classical “triple” response in etiolated pea seedlings; most likely by producing ethylene from L-MET. This is the first study, to our knowledge, reporting on the comparative effect of rhizobacteria capable of utilizing ACC vs L-MET on etiolated pea seedlings.

Journal Article

Isolation of Cryptococcus neoformans var. grubii (serotype A) from Pigeon Droppings in Seoul, Korea: Hee Youn Chee , Kyung Bok Lee; J. Microbiol. 2005;43(5):469-472.; DOI: https://doi.org/2273 [pii]

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Abstract: Seventy-two pigeon dropping samples were collected from 26 different localities in Seoul and investigated for the occurrence of Cryptococcus neoformans. Seventeen samples from 8 different localities were found to be positive for C. neoformans. All isolates were obtained from withered pigeon droppings. Identification and serotyping of the isolates were determined by means of serological testing and DNA fingerprinting. All isolates belonged to C. neoformans var. grubbi (serotype A).

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