Detection of methicillin resistant staphylococcus aureus using mec a, ribotyping and antibiogram profile of Pakistani clinical isolates

Background: The objective of this study was to determine the incidence of MRSA with their antibiotic susceptibility pattern and molecular characterization of these strains. Study Design: Cross sectional study. Setting: Microbiology section of Citilab and Research Centre, Lahore. Period: March 2014 to June 2016. Materials and Methods: Bacterial isolates were retrieved from different specimens of pus/wound, blood and other body fluids. These were characterized using conventional (catalase, DNase, coagulase etc), phenotypic and molecular techniques (oxacillin and cefoxitin susceptibility, 16S rRNA gene sequencing and mec-A gene) methods of identification. Antibiotic sensitivity pattern was also detected by applying standard Kirby Bauer disc diffusion method. Results: Out of all the isolated strains, the frequency of MSSA (methicillin sensitive Staphylococcu saureus) was more than the MRSA and it was found that the male patients were more affected than the female patients. All of the isolates were resistant to cefoxitin and oxacillin while most of them showed positive band of mec-A gene. All of the MRSA isolates showed resistant to penicillin followed by azithromycin, erythromycin, co-trimoxazole and ciprofloxacin, while these strains were sensitive to linezolid and vancomycin, followed by teicoplanin, fosfomycin and fusidic acid. Conclusion: In conclusion, proper diagnosis of MRSA required conventional, phenotypic molecular techniques in our hospital diagnostic settings. This will help in choosing the effective antibiotics combat the infection.

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Tongue microbiome of smokeless tobacco users

10.21203/rs.3.rs-16412/v1 ◽

2020 ◽

Author(s):

Esam Halboub ◽

Mohammed Alakhali ◽

Abdulwahhab H. Al-Amir ◽

Husham E. Homeida ◽

Divyashri Baraniya ◽

...

Keyword(s):

Smokeless Tobacco ◽

Alpha Diversity ◽

16S Rrna Gene Sequencing ◽

Cross Sectional Study ◽

Oral Microbiome ◽

Rrna Gene ◽

Cross Sectional ◽

Oral Carcinogenesis ◽

Rothia Mucilaginosa ◽

Rrna Gene Sequencing

Abstract Background The possibility that smokeless tobacco may contribute to oral carcinogenesis by influencing the oral microbiome has not been explored. This cross sectional study sought to assess the effect of using shammah, a form of smokeless tobacco prevalent in Arabia, on the tongue microbiome. Tongue scarping samples were obtained from twenty-nine shammah users (SU; 27.34±6.9 years) and 23 shammah non-users (SNU; 27.7±7.19 years) and analyzed with 16S rRNA gene sequencing (V1-V3). Species-level taxonomy assignment of the high-quality, merged reads was obtained using a previously described BLASTn-based algorithm. Downstream analyses were performed with QIIME, LEfSe, and R. Results A total of 178 species, belonging to 62 genera and 8 phyla were identified. Genera Streptococcus , Leptotrichia , Actinomyces , Veillonella , Haemophilus , Prevotella and Neisseria accounted for more than 60% of the average microbiome. There were no differences between the two groups in species richness and alpha-diversity, but PCoA showed significant separation (P=0.015, ANOSIM). LEfSe analysis identified 22 species to be differentially abundant between the SU and SNU. However, only 7 species maintained a false discovery rate of ≤ 0.2 and could cluster the two groups separately: Rothia mucilaginosa , Streptococcus sp. oral taxon 66, Actinomyces meyeri , Streptococcus vestibularis Streptococcus sanguinis and a potentially novel Veillonella species in association with SU, and Oribacterium asaccharolyticum with SNU. Conclusion Shammah use induces tongue microbiome changes that may be relevant to oral carcinogenesis, namely enrichment of species with high acetaldehyde production potential, which warrants further investigation.

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Tongue microbiome of smokeless tobacco users

10.21203/rs.2.24331/v1 ◽

2020 ◽

Author(s):

Esam Halboub ◽

Mohammed Alakhali ◽

Abdulwahhab H. Al-Amir ◽

Husham E. Homeida ◽

Divyashri Baraniya ◽

...

Keyword(s):

Smokeless Tobacco ◽

Alpha Diversity ◽

16S Rrna Gene Sequencing ◽

Cross Sectional Study ◽

Oral Microbiome ◽

Rrna Gene ◽

Cross Sectional ◽

Oral Carcinogenesis ◽

Rothia Mucilaginosa ◽

Rrna Gene Sequencing

Abstract Background: The possibility that smokeless tobacco may contribute to oral carcinogenesis by influencing the oral microbiome has not been explored. This cross sectional study sought to assess the effect of using hammah, a form of smokeless tobacco prevalent in Arabia, on the tongue microbiome. Tongue scarping samples were obtained from twenty-nine shammah users (SU; 27.34±6.9 years) and 23 shammah non-users (SNU; 27.7±7.19 years) and analyzed with 16S rRNA gene sequencing (V1-V3). Species-level taxonomy assignment of the high-quality, merged reads was obtained using a previously described BLASTn-based algorithm. Downstream analyses were performed with QIIME, LEfSe, and R.Results: A total of 178 species, belonging to 62 genera and 8 phyla were identified. Genera Streptococcus , Leptotrichia , Actinomyces , Veillonella , Haemophilus , Prevotella and Neisseria accounted for more than 60% of the average microbiome. There were no differences between the two groups in species richness and alpha-diversity, but PCoA showed significant separation (P=0.015, ANOSIM). LEfSe analysis identified 22 species to be differentially abundant between the SU and SNU. However, only 7 species maintained a false discovery rate of ≤ 0.2 and could cluster the two groups separately: Rothia mucilaginosa , Streptococcus sp. oral taxon 66, Actinomyces meyeri , Streptococcus vestibularis Streptococcus sanguinis and a potentially novel Veillonella species in association with SU, and Oribacterium asaccharolyticum with SNU.Conclusion: Shammah use induces tongue microbiome changes that may be relevant to oral carcinogenesis, namely enrichment of species with high acetaldehyde production potential, which warrants further investigation.

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Bacteriological and mycological profile of chronic suppurative otitis media

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20181866 ◽

2018 ◽

Vol 4 (3) ◽

pp. 754 ◽

Cited By ~ 1

Author(s):

Nagraj M. ◽

Premalatha D. E.

Keyword(s):

Staphylococcus Aureus ◽

Pseudomonas Aeruginosa ◽

Otitis Media ◽

Antibiotic Sensitivity ◽

Cross Sectional Study ◽

Chronic Suppurative Otitis Media ◽

Diffusion Method ◽

Cross Sectional ◽

Suppurative Otitis Media ◽

Sensitivity Pattern

Background: Chronic suppurative otitis media (CSOM) is the chronic inflammation of the middle ear cleft. It can cause permanent perforation and is famous for its recurrence and persistent infection. Haphazard use of antibiotics and increasing use of newer ones has led to persistent change in microbial flora. The aim of this study was to isolate and identify the bacteria and fungi causing chronic suppurative otitis media and to determine the antibiotic sensitivity pattern of the bacterial isolates.Methods: This is a prospective cross sectional study was done in 70 patients of chronic suppurative otitis media presenting with active ear discharge. Sterile swabs were used to collect pus from discharging ear and sent for culture sensitivity. All organisms isolated were identified according to standard microbiological methods.Antimicrobial susceptibility test was performed using Kirby- Bauer disc diffusion method according to Clinical and Laboratory Standards Institute guidelines. Results: Staphylococcus aureus and Pseudomonas aeruginosa were the most common organisms isolated in this study. Fungi isolated most commonly was Aspergillus species. Pseudomonas aeruginosa was most sensitive to Piperacillin-Tazobactam, and Gentamycin. Staphylococcus aureus was most sensitive to Linezolid and vancomycin and least sensitive to Erythromycin.Conclusions: Staphylococcus aureus was the most common bacteria isolated and Aspergillus spp was the most common fungi isolated from patients with CSOM. Judicial use of antibiotics is necessary for the prevention of development of antibiotic resistance.

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Evaluation of Commercial Disinfectants against Staphylococcus lentus and Micrococcus spp. of Poultry Origin

Veterinary Medicine International ◽

10.1155/2020/8811540 ◽

2020 ◽

Vol 2020 ◽

pp. 1-10

Author(s):

Otun Saha ◽

Nadira Naznin Rakhi ◽

Arif Istiaq ◽

Israt Islam ◽

Munawar Sultana ◽

...

Keyword(s):

Micrococcus Luteus ◽

Bacterial Species ◽

16S Rrna Gene Sequencing ◽

Average Diameter ◽

Diffusion Method ◽

Dilution Method ◽

Rrna Gene ◽

Poultry Farms ◽

Rrna Gene Sequencing ◽

Selection Of

Introduction. Effective sanitation strategies for poultry farms require an appropriate selection of the disinfectant based on the contaminants present and their sensitivity to the disinfectants. Aim. The current study investigated the prevalence of streptococci/micrococci in poultry farms of Bangladesh and the efficacy of commercial disinfectants (Savlon, Lysol, Quatovet, Virkon S, and Virocid) along with alcohol against these pathogens to adopt appropriate strategies. Materials and Methods. Conventional approaches and the 16S rRNA gene sequencing were performed to confirm the isolates at the species level along with microtiter biofilm assay to determine their biofilm-forming ability. Efficacy of the disinfectants was tested against those isolates using agar well diffusion and minimum inhibitory concentration (MIC) test by broth dilution method using different dilutions of the disinfectants. Results. Staphylococcus lentus (n = 32), Micrococcus luteus (n = 7), and Micrococcus aloeverae (n = 4) were confirmed among 102 presumptively screened streptococci/micrococci isolates from 43 samples. No single disinfectant showed equally high efficacy against all three bacterial species in agar well diffusion test, although Virocid showed the lowest MIC against all three of them. Lysol was least effective among the commercial disinfectants by both MIC and diffusion method, although each commercial disinfectant was more effective than alcohol. Considering both the average diameter of the inhibition zones and the MIC values, efficacy can be interpreted as Virocid > Quatovet > Savlon > Virkon S > Lysol. Although the efficacy decreased with decreasing concentration, the disinfectants retained a satisfactory level of efficacy at 50% concentration. Among test pathogens, M. aloeverae was the most sensitive to the disinfectants and the weakest biofilm producers, whereas 4/14 S. lentus and 1/5 M. luteus were strong biofilm producers, which may cause more reduction in the efficacy in environmental conditions. Conclusion. As no ideal disinfectant was found in the study, the efficacy of the disinfectants should be routinely evaluated and validated to ensure the sanitation standards in the poultry sector.

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A Comparative Cross-Sectional Study to compare the Isolated Organism and their Antibiotic Sensitivity Pattern Between Community-Acquired Pneumonia (CAP) and Ventilator-Associated Pneumonia (VAP) in Intensive Care Unit (ICU).

The Journal of Sylhet Women’s Medical College ◽

10.47648/jswmc2021v1102-03 ◽

2021 ◽

Vol 11 (Number 2) ◽

pp. 26-34

Author(s):

Nahian Ahmed Chowdhury ◽

Dipak Kumar Mitra ◽

Afrin Ahmed Clara ◽

Md. Suhail Alam ◽

MD. Zahed Hossain

Keyword(s):

Medical Information ◽

Antibiotic Sensitivity ◽

Cross Sectional Study ◽

Community Acquired Pneumonia ◽

Ventilator Associated Pneumonia ◽

Sectional Study ◽

Cross Sectional ◽

Mechanically Ventilated ◽

Sensitivity Pattern ◽

Staphylococcus Spp

Background: The moment most common cause of in-hospital infection is pneumonia. Pneumonia is prevalent within the ICU (Intensive Care Unit) setting and can be deadly. The Incidence of pneumonia is approximately 17% in the therapeutic ICU2 but can be 6 to 20 times increased in mechanically ventilated patients. The duration of hospital stay and expenditure are both expanded in patients who develop ventilator-associated pneumonia. This study aims to identify the causative microorganism responsible for CAP (Community-Acquired Pneumonia) and VAP (Ventilator-Associated Pneumonia) and their antibiotic sensitivity pattern. Methods: This was a comparative cross-sectional study that was carried out at two ICU in Sylhet city. The data was collected from the patient's medical information, the patient's file, and the hospital information system. Culture and sensitivity (C/S) were collected from the electronic medical information system (MIS). All data from January 2019 to December 2020, including patient's information, course of the disease (in terms of death or recovery-if available), clinical features, and investigation reports, was transferred to an electronic data collection sheet (Microsoft Excel). After completion of all data collection, analysis was conducted through a spreadsheet. Comparison between two disease groups was made by independent t-test. Within the group, the analysis was done by the Chi-Square test. Results: In this thesis study, it was found that the most common organism responsible for CAP was Streptococcus spp. (34.70%) and is sensitive to Meropenem (92.21%), Imipenem (88.16%), Amikacin (70.67%), Piperacillin (70.91%), Moxifloxacin (70.96%), Levofloxacin (67.95%), Amoxiclav (67.92%), and Ceftriaxone(63.95%). The most common causative organism responsible for VAP was Staphylococcus spp. (36.51%) and it was sensitive to Imipenem (100%), Moxifloxacin (100%), Meropenem (94.73%), Amikacin (85.71%), Ceftriaxone (60%), Amoxiclav (66.66%), Levofloxacin (57.14%), and Cefuroxime (50%). Conclusion: Pneumonia is still one of the most common reasons for hospitalization, particularly for those admitted to ICU. It has been observed in several studies that the majority of the cases are communityacquired pneumonia. Many mechanically ventilated patients often develop VAP, which is fatal if timely diagnosis and appropriate antibiotics administration are not made. Streptococcus spp. was the most common organism responsible for CAP, and Staphylococcus spp. mainly was responsible for VAP.

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Antibiotic Sensitivity Pattern of Bacterial Isolates in Patients with Chronic Rhinosinusitis in Kaduna, Nigeria

International Archives of Otorhinolaryngology ◽

10.1055/s-0038-1673676 ◽

2018 ◽

Vol 23 (02) ◽

pp. 152-156

Author(s):

Emmanuel Musa ◽

Aliyu Kodiya ◽

Abdullahi Kirfi ◽

Onyekwere Nwaorgu

Keyword(s):

Chronic Rhinosinusitis ◽

Anaerobic Bacteria ◽

Antibiotic Sensitivity ◽

Cross Sectional Study ◽

Bacterial Isolates ◽

Statistical Parameters ◽

Cross Sectional ◽

Sensitivity Pattern ◽

Sensitivity Tests ◽

Aerobic And Anaerobic

Introduction A common practice in the management of patients with chronic rhinosinusitis (CRS), the empirical use of antibiotics may contribute to treatment failure and to the development of antimicrobial resistance. Objective To determine the antibiotic sensitivity pattern of aerobic and anaerobic bacteria associated with CRS. Methods This was a prospective cross-sectional study in which endoscopically guided middle meatal swabs (IBM Spss, version 16.0, Chicago, IL, USA) were aseptically taken from patients diagnosed with CRS after obtaining informed consent and ethical clearance. The samples were sent to the laboratory for qualitative and semiquantitative analysis via gram stain, aerobic, anaerobic cultures and antibacterial sensitivity tests. The collected data was analyzed using SPSS for Windows, version 16 (SPSS Inc, Chicago, IL, USA). Simple statistical parameters and paired sample t-test were used, as appropriate. Results There were 74 (56.92%) bacterial growths, out of which 55 (74.32%) were aerobic and 19 (25.68%) were anaerobic isolates, from a total of 130 patients. About 13 (17.5%–18%) of these bacterial growths yielded a mixed growth of aerobic and anaerobic isolates. The most common bacterial isolates were 26 (35.14%) Staphylococcus aureus, Haemophilus influenzae 9 (12.16%), Streptococcus viridians 8 (10.81%), and Streptococcus pneumoniae 5 (6.76%). Augmentin, ciprofloxacin, and Peflacine were found to be most effective, followed by levofloxacin, Rocephin, erythromycin and Zinat in that order. Conclusion Augmentin, ciprofloxacin and Peflacine have a sensitivity of 100%, while most of the organisms show resistance to Ampiclox, amoxicillin, and Septrin.

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Bacterial Etiology of Wound Exudates in Tertiary Care Cancer Patients and Antibiogram of the Isolates

Infectious Diseases Research and Treatment ◽

10.1177/1178633720952077 ◽

2020 ◽

Vol 13 ◽

pp. 117863372095207

Author(s):

Kiran Duwadi ◽

Sujan Khadka ◽

Sanjib Adhikari ◽

Sanjeep Sapkota ◽

Pabitra Shrestha

Keyword(s):

Staphylococcus Aureus ◽

Pathogenic Bacteria ◽

Methicillin Resistance ◽

Tertiary Care ◽

Antibiotic Sensitivity ◽

Cross Sectional Study ◽

Diffusion Method ◽

Disc Diffusion ◽

Biochemical Tests ◽

Cross Sectional

Introduction: Patients with malignancies frequently develop infections as a result of surgical procedures and fungating wounds leading to pus formation. This cross-sectional study was conducted to explore the bacteriological spectra of infections of various cancer sites and their antibiotic sensitivity patterns among the patients visiting minor operation theatre (OT) of B.P. Koirala Memorial Cancer Hospital (BPKMCH), Chitwan, Nepal. Methods: Over a period of 3 months from September to November 2018, a total of 183 wound exudates and pus samples were collected and analyzed by standard microbiological procedures. Isolates were identified based on the colony characters, Gram staining and an array of biochemical tests. Antibiotic susceptibility testing was performed by Kirby-Bauer disc diffusion technique according to criteria set by CLSI, 2016. Methicillin resistance in Staphylococcus aureus was tested with the help of cefoxitin using disc diffusion method. Results: Out of the 183 samples, 149 (81.4%) were culture positive. Among 13 different isolates identified, S. aureus (43.0%) was predominant followed by E. coli (14.0%). Higher incidence of bacteria was seen among the males (52.3%), in the age group 51 to 60 years (26.8%) and among the patients undergoing surgical intervention to deal with cancer (34.2%). The prevalence of wound infection was significantly affected by gender, age, and treatment regimen ( P < .01). Out of the total 68 S. aureus isolates, 38 (44.1%) were deemed as Methicillin-resistant Staphylococcus aureus (MRSA). Among the 158 isolates, 85 (53.8%) were multi-drug resistant (MDR). Cefepime was the most effective antibiotic for Gram positive isolates whereas both imipenem and meropenem were found to be equally more effective for Gram negative isolates. Conclusion: This study suggests that patients with malignancies harbor pathogenic bacteria; therefore, prudent use of antibiotics is essential to prevent the emergence of MDR pathogens.

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Vaginal microbiota composition and association with prevalent Chlamydia trachomatis infection: a cross-sectional study of young women attending a STI clinic in France

Sexually Transmitted Infections ◽

10.1136/sextrans-2017-053346 ◽

2018 ◽

Vol 94 (8) ◽

pp. 616-618 ◽

Cited By ~ 9

Author(s):

Jeanne Tamarelle ◽

Bertille de Barbeyrac ◽

Isabelle Le Hen ◽

Anne Thiébaut ◽

Cécile Bébéar ◽

...

Keyword(s):

Chlamydia Trachomatis ◽

Young Women ◽

Statistical Power ◽

Cross Sectional Study ◽

Vaginal Microbiota ◽

Molecular Techniques ◽

Rrna Gene ◽

Microbiota Composition ◽

Sectional Study ◽

Cross Sectional

ObjectivesNew molecular techniques have allowed describing groups of bacterial communities in the vagina (community state types (CST)) that could play an important role in Chlamydia trachomatis (CT) infection. Our aim was to describe the distribution of CST in a population of young women in France.MethodsA cross-sectional study was carried out in June 2015 among anonymous young women attending a STI clinic in Bordeaux, France. Participants provided a vaginal sample for CT screening and sociodemographic data. CT was diagnosed using the Aptima-combo 2 transcription-mediated-amplification assay. Vaginal microbiota composition was characterised using 16S rRNA gene amplicon sequencing.ResultsMicrobiota composition and CT status were available for 132 women. CST dominated by Lactobacillus crispatus (CST-I), L. iners (CST-III) and a diversity of anaerobes (CST-IV) represented 37.1%, 38.6% and 22.0% of the sample, respectively. Twenty-one out of 132 women were CT positive. Proportions of CT-positive women were higher for samples belonging to CST-III (21.6%) and CST-IV (17.2%) than to CST-I (8.2%).ConclusionsFive CST were found in 132 young women from a STI clinic in France. These CSTs were not significantly associated with CT but higher proportions of CT-positive women were found in CST-III and CST-IV, consistent with a previous study in the Netherlands. Though our study lacked statistical power and was cross-sectional, it is a necessary first step to understand the structure of the vaginal microbiota in French women with or without infection before performing in-depth longitudinal studies.

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Characterization of Cutaneous Bacterial Microbiota from Superficial Pyoderma Forms in Atopic Dogs

Pathogens ◽

10.3390/pathogens9080638 ◽

2020 ◽

Vol 9 (8) ◽

pp. 638

Author(s):

Caitlin E. Older ◽

Aline Rodrigues Hoffmann ◽

Kathleen Hoover ◽

Frane Banovic

Keyword(s):

Quantitative Polymerase Chain Reaction ◽

16S Rrna Gene Sequencing ◽

Molecular Techniques ◽

Rrna Gene ◽

Bacterial Microbiota ◽

Starting Point ◽

Rrna Gene Sequencing ◽

Antimicrobial Treatments ◽

Staphylococcus Spp

Although Staphylococcus pseudintermedius is considered the major pathogen associated with superficial canine pyoderma, no study has investigated the entire bacterial community in these lesions with molecular techniques. The objectives of this study were to characterize the bacterial microbiota in two forms of superficial canine pyoderma lesions, superficial bacterial folliculitis (SBF) and epidermal collarette (EC), especially in terms of the staphylococcal community. Swabs from 12 SBF and 9 EC lesions were obtained from eight and six atopic dogs, respectively. Eight samples from the axilla and groin of four healthy dogs served as controls. DNA was extracted for 16S rRNA gene sequencing and quantitative polymerase chain reaction of Staphylococcus spp. and S. pseudintermedius. Healthy skin samples harbored significantly more diverse bacterial communities than pyoderma samples. Healthy samples had communities that were more similar to each other, and were distinct from pyoderma samples. Staphylococcus spp. abundance was increased in pyoderma samples, especially those from EC samples. Although determining species-level identities of staphylococcal sequences revealed many species, S. pseudintermedius was the primary staphylococcal species found in all sample types. As expected, there are many differences in the microbiota when comparing healthy and canine pyoderma lesions samples. These lesions do not seem to be associated with a change in the relative abundance of specific Staphylococcus species, but simply an overall increase in Staphylococcus spp. abundance. The results of this study provide a starting point for future studies investigating how antimicrobial treatments may further change the microbiota associated with these lesions.

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Changes in gut microbiota composition and their associations with cortisol, melatonin and interleukin 6 in patients with chronic insomnia

Bulletin of Russian State Medical University ◽

10.24075/brsmu.2021.017 ◽

2021 ◽

Author(s):

AA Masyutina ◽

LN Gumenyuk ◽

YuV Fatovenko ◽

LE Sorokina ◽

SS Bayramova ◽

...

Keyword(s):

Gut Microbiota ◽

Sleep Quality ◽

Healthy Volunteers ◽

16S Rrna Gene Sequencing ◽

Cross Sectional Study ◽

Taxonomic Composition ◽

Chronic Insomnia ◽

Control Group ◽

Rrna Gene ◽

Cross Sectional

The relationship between the gut microbiota and chronic insomnia remains understudied. The aim of this paper was to investigate changes in the taxonomic composition of the gut microbiota and their associations with the levels of cortisol, melatonin and IL6 in patients with chronic insomnia. Our comparative prospective cross-sectional study enrolled 55 patients with chronic insomnia, who formed the main group (female patients: 58.2%, male patients: 41.8%; mean age 31.6 ± 7.4 years), and 50 healthy volunteers, who comprised the control group (females: 68.0%, males: 32.0%; mean age 33.2 ± 6.6 years). The taxonomic composition of the gut microbiota was profiled using 16S rRNA gene sequencing. Plasma cortisol and IL 6 and urine melatonin were measured by means of ELISA. Sleep quality was evaluated using the Pittsburgh Sleep Quality Index (PSQI). In patients with chronic insomnia, the abundance of Faecalibacterium (p = 0.048), Prevotella 9 (p < 0.001) and Lachnospira (p = 0.036) was lower, whereas the abundance of Blautia (p = 0.012) and Eubacteriumhallii (p = 0.003) was higher than in healthy volunteers. Significant correlations were established between the levels of IL6 and the abundance of Faecalibacterium (r = –0.44; p = 0.001) and Blautia (r = 0.42; p < 0.001), as well as between cortisol concentrations and the abundance of Lachnospira (r = –0.41; p = 0.048). The abundance of Faecalibacterium and Blautiaс was correlated with higher PSQI (r = –0.47, p = 0.001; r = 0.45, p < 0.001, respectively). Our study contributed to the pool of data about changes in the gut microbiota and their associations with some endocrine and inflammation markers in patients with chronic insomnia. These data can be exploited to propose new strategies for the diagnosis and personalized treatment of insomnia aimed at normalizing the patient’s gut microbiota.

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