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  1. Article: Susceptibility of endometrial isolates recovered from women with clinical pelvic inflammatory disease or histological endometritis to antimicrobial agents

    Petrina, Melinda A.B / Cosentino, Lisa A / Wiesenfeld, Harold C / Darville, Toni / Hillier, Sharon L

    Anaerobe. 2019 Apr., v. 56

    2019  

    Abstract: The CDC recommended outpatient treatment of pelvic inflammatory disease (PID) is an intramuscular dose of ceftriaxone plus 14 days of doxycycline, with or without metronidazole. European guidelines (2017) include moxifloxacin plus ceftriaxone as a first ... ...

    Abstract The CDC recommended outpatient treatment of pelvic inflammatory disease (PID) is an intramuscular dose of ceftriaxone plus 14 days of doxycycline, with or without metronidazole. European guidelines (2017) include moxifloxacin plus ceftriaxone as a first line regimen, particularly for women with Mycoplasma genitalium-associated PID. However, the susceptibility of bacteria recovered from the endometrium of women with PID to moxifloxacin is unknown. The in vitro antibiotic susceptibility of facultative and anaerobic bacteria recovered from endometrial biopsy samples were evaluated from 105 women having symptomatic PID and/or histologically confirmed endometritis. A total of 342 endometrial isolates from enrollment visits were identified using a combination of biochemical tests and sequencing. Isolates were tested for antimicrobial susceptibility using agar dilution against ceftriaxone, clindamycin, doxycycline, metronidazole and moxifloxacin according to the Clinical and Laboratory Standards Institute (CLSI) guidelines. Neisseria gonorrhoeae was susceptible to ceftriaxone with all isolates having an MIC of 0.03 μg/mL. All the other endometrial isolates were susceptible to ceftriaxone, except for Prevotella species, only half of which were susceptible. The in vitro susceptibility profile for BV-associated bacteria (Gardnerella vaginalis, Atopobium vaginae, Prevotella species, Porphyromonas species and anaerobic gram-positive cocci) revealed greater susceptibility to moxifloxacin compared to doxycycline. Moxifloxacin was superior to metronidazole for G. vaginalis and A. vaginae, and either metronidazole or moxifloxacin was needed to cover Prevotella species. Based on in vitro susceptibility testing, the combination of ceftriaxone plus moxifloxacin provides similar coverage of facultative and anaerobic pathogens compared to the combination of ceftriaxone, metronidazole and doxycycline. Head to head clinical studies of these treatment regimens are needed to evaluate clinical efficacy and eradication of endometrial pathogens following treatment.
    Keywords Atopobium vaginae ; Gardnerella vaginalis ; Gram-positive bacteria ; Mycoplasma ; Neisseria gonorrhoeae ; Porphyromonas ; Prevotella ; agar ; anaerobes ; antibiotic resistance ; biopsy ; ceftriaxone ; clindamycin ; clinical trials ; doxycycline ; endometritis ; endometrium ; guidelines ; histology ; metronidazole ; moxifloxacin ; pathogens ; women
    Language English
    Dates of publication 2019-04
    Size p. 61-65.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1237621-8
    ISSN 1075-9964
    ISSN 1075-9964
    DOI 10.1016/j.anaerobe.2019.02.005
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Susceptibility of endometrial isolates recovered from women with clinical pelvic inflammatory disease or histological endometritis to antimicrobial agents.

    Petrina, Melinda A B / Cosentino, Lisa A / Wiesenfeld, Harold C / Darville, Toni / Hillier, Sharon L

    Anaerobe

    2019  Volume 56, Page(s) 61–65

    Abstract: The CDC recommended outpatient treatment of pelvic inflammatory disease (PID) is an intramuscular dose of ceftriaxone plus 14 days of doxycycline, with or without metronidazole. European guidelines (2017) include moxifloxacin plus ceftriaxone as a first ... ...

    Abstract The CDC recommended outpatient treatment of pelvic inflammatory disease (PID) is an intramuscular dose of ceftriaxone plus 14 days of doxycycline, with or without metronidazole. European guidelines (2017) include moxifloxacin plus ceftriaxone as a first line regimen, particularly for women with Mycoplasma genitalium-associated PID. However, the susceptibility of bacteria recovered from the endometrium of women with PID to moxifloxacin is unknown. The in vitro antibiotic susceptibility of facultative and anaerobic bacteria recovered from endometrial biopsy samples were evaluated from 105 women having symptomatic PID and/or histologically confirmed endometritis. A total of 342 endometrial isolates from enrollment visits were identified using a combination of biochemical tests and sequencing. Isolates were tested for antimicrobial susceptibility using agar dilution against ceftriaxone, clindamycin, doxycycline, metronidazole and moxifloxacin according to the Clinical and Laboratory Standards Institute (CLSI) guidelines. Neisseria gonorrhoeae was susceptible to ceftriaxone with all isolates having an MIC of 0.03 μg/mL. All the other endometrial isolates were susceptible to ceftriaxone, except for Prevotella species, only half of which were susceptible. The in vitro susceptibility profile for BV-associated bacteria (Gardnerella vaginalis, Atopobium vaginae, Prevotella species, Porphyromonas species and anaerobic gram-positive cocci) revealed greater susceptibility to moxifloxacin compared to doxycycline. Moxifloxacin was superior to metronidazole for G. vaginalis and A. vaginae, and either metronidazole or moxifloxacin was needed to cover Prevotella species. Based on in vitro susceptibility testing, the combination of ceftriaxone plus moxifloxacin provides similar coverage of facultative and anaerobic pathogens compared to the combination of ceftriaxone, metronidazole and doxycycline. Head to head clinical studies of these treatment regimens are needed to evaluate clinical efficacy and eradication of endometrial pathogens following treatment.
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Bacteria, Anaerobic/classification ; Bacteria, Anaerobic/drug effects ; Bacteria, Anaerobic/genetics ; Bacteria, Anaerobic/isolation & purification ; Bacterial Infections/microbiology ; Bacterial Typing Techniques ; Endometritis/microbiology ; Endometrium/microbiology ; Female ; Humans ; Microbial Sensitivity Tests ; Pelvic Inflammatory Disease/microbiology ; Sequence Analysis, DNA
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2019-02-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 1237621-8
    ISSN 1095-8274 ; 1075-9964
    ISSN (online) 1095-8274
    ISSN 1075-9964
    DOI 10.1016/j.anaerobe.2019.02.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Susceptibility of bacterial vaginosis (BV)-associated bacteria to secnidazole compared to metronidazole, tinidazole and clindamycin

    Petrina, Melinda A.B / Lisa A. Cosentino / Lorna K. Rabe / Sharon L. Hillier

    Anaerobe. 2017 Oct., v. 47

    2017  

    Abstract: Secnidazole, a 5-nitroimidazole with a longer half-life, is structurally related to metronidazole and tinidazole. For treatment of bacterial vaginosis (BV), secnidazole is a suitable single-dose oral drug having a longer serum half-life than ... ...

    Abstract Secnidazole, a 5-nitroimidazole with a longer half-life, is structurally related to metronidazole and tinidazole. For treatment of bacterial vaginosis (BV), secnidazole is a suitable single-dose oral drug having a longer serum half-life than metronidazole. The objective of this study was to evaluate the antimicrobial susceptibility of vaginal isolates of facultative and anaerobic bacteria to secnidazole, metronidazole, tinidazole and clindamycin.A total of 605 unique BV-related bacteria and 108 isolates of lactobacilli recovered from the human vagina of US women during the years 2009–2015 were tested for antimicrobial susceptibility by the agar dilution CLSI reference method to determine the minimal inhibitory concentration (MIC).The MIC90 (μg/mL) for secnidazole was similar to metronidazole and tinidazole for Anaerococcus tetradius (secnidazole: MIC90 2; metronidazole: MIC90 2; tinidazole: MIC90 4), Atopobium vaginae (32; >128; 128), Bacteroides species (2; 2; 2), Finegoldia magna (2; 2; 4), Gardnerella vaginalis (128; 64; 32), Mageeibacillus indolicus (2; 2; 2), Megasphaera-like bacteria (0.5; 0.25; 0.5), Mobiluncus curtisii (128; >128; >128) and Mobiluncus mulieris (>128; >128; >128), Peptoniphilus lacrimalis (4; 4; 4) and Peptoniphilus harei (2; 2; 4), Porphyromonas species (0.25; 0.5; 0.25), Prevotella bivia (8; 8; 8), Prevotella amnii (2; 1; 2) and Prevotella timonensis (2; 2; 2). In this evaluation, 14 (40%) of 35 P. bivia, 5 (14%) of 35 P. amnii and 21 (58%) of 36 P. timonensis isolates were resistant to clindamycin with MIC values of >128 μg/mL. Secnidazole, like metronidazole, was superior to clindamycin for Prevotella spp., Bacteroides spp., Peptoniphilus spp., Anaerococcus tetradius and Finegoldia magna. Clindamycin had greater activity against Atopobium vaginae, Gardnerella vaginalis and Mobiluncus spp. compared to the nitroimidazoles. All 27 Lactobacillus crispatus, 26 (96%) of 27 L. jensenii, 5 (19%) of 27 L. gasseri and 18 (67%) of 27 L. iners isolates were susceptible to clindamycin (MIC ≤2) while the MIC90 for all lactobacilli tested was >128 μg/mL for secnidazole, metronidazole and tinidazole.Secnidazole has similar in vitro activity against the range of microorganisms associated with BV compared to metronidazole or tinidazole. Further, secnidazole spares lactobacilli, a characteristic which is desirable in drugs used to treat bacterial vaginosis.
    Keywords agar ; anaerobes ; Anaerococcus ; antibiotic resistance ; Atopobium vaginae ; bacteria ; Bacteroides ; blood serum ; clindamycin ; drugs ; Finegoldia magna ; Gardnerella vaginalis ; half life ; humans ; Lactobacillus crispatus ; metronidazole ; minimum inhibitory concentration ; Mobiluncus curtisii ; Mobiluncus mulieris ; Peptoniphilus ; Porphyromonas ; Prevotella bivia ; tinidazole ; vagina ; women ; United States
    Language English
    Dates of publication 2017-10
    Size p. 115-119.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1237621-8
    ISSN 1075-9964
    ISSN 1075-9964
    DOI 10.1016/j.anaerobe.2017.05.005
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Susceptibility of bacterial vaginosis (BV)-associated bacteria to secnidazole compared to metronidazole, tinidazole and clindamycin.

    Petrina, Melinda A B / Cosentino, Lisa A / Rabe, Lorna K / Hillier, Sharon L

    Anaerobe

    2017  Volume 47, Page(s) 115–119

    Abstract: Secnidazole, a 5-nitroimidazole with a longer half-life, is structurally related to metronidazole and tinidazole. For treatment of bacterial vaginosis (BV), secnidazole is a suitable single-dose oral drug having a longer serum half-life than ... ...

    Abstract Secnidazole, a 5-nitroimidazole with a longer half-life, is structurally related to metronidazole and tinidazole. For treatment of bacterial vaginosis (BV), secnidazole is a suitable single-dose oral drug having a longer serum half-life than metronidazole. The objective of this study was to evaluate the antimicrobial susceptibility of vaginal isolates of facultative and anaerobic bacteria to secnidazole, metronidazole, tinidazole and clindamycin. A total of 605 unique BV-related bacteria and 108 isolates of lactobacilli recovered from the human vagina of US women during the years 2009-2015 were tested for antimicrobial susceptibility by the agar dilution CLSI reference method to determine the minimal inhibitory concentration (MIC). The MIC
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Azoles/pharmacology ; Bacteria/drug effects ; Bacteria/isolation & purification ; Clindamycin/pharmacology ; Female ; Humans ; Microbial Sensitivity Tests ; United States ; Vaginosis, Bacterial/microbiology
    Chemical Substances Anti-Bacterial Agents ; Azoles ; Clindamycin (3U02EL437C)
    Language English
    Publishing date 2017-05-15
    Publishing country England
    Document type Comparative Study ; Journal Article
    ZDB-ID 1237621-8
    ISSN 1095-8274 ; 1075-9964
    ISSN (online) 1095-8274
    ISSN 1075-9964
    DOI 10.1016/j.anaerobe.2017.05.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Impact of Dapivirine and Placebo Vaginal Rings on the Microbiota of Adolescent, Lactating, and Postmenopausal Females.

    Austin, Michele N / Meyn, Leslie A / Avolia, Hilary A / Petrina, Melinda A / Cosentino, Lisa A / Alphonse, Calins / Chen, Beatrice A / Bunge, Katherine / Noguchi, Lisa / Beigi, Richard / Squires, Kathleen / Hillier, Sharon L

    The Journal of infectious diseases

    2021  Volume 225, Issue 12, Page(s) 2208–2218

    Abstract: ... prevalence of Candida albicans and increased quantity of group B Streptococcus and non-albicans yeasts ...

    Abstract Background: A 25-mg dapivirine vaginal ring has been demonstrated to reduce risk of human immunodeficiency virus (HIV) acquisition in nonpregnant adult women. In this secondary analysis of studies conducted in US adolescent, lactating, and postmenopausal females, vaginal microbiota was assessed prior to and after ring use, and between dapivirine and placebo ring users.
    Methods: Vaginal fluid swabs were collected before and after product use for the evaluation of microbiota using Nugent criteria, quantitative culture, and quantitative polymerase chain reaction.
    Results: Vaginal ring use did not impact bacterial vaginosis prevalence among the 3 populations and was associated with minimal shifts in microbiota. Adolescents in both arms demonstrated an increased prevalence of Lactobacillus crispatus and a decrease in quantity of Megasphaera lornae. Postmenopausal active and placebo ring users demonstrated an increased prevalence of lactobacilli and non-albicans yeast, while dapivirine ring users demonstrated an increased prevalence of Candida albicans and increased quantity of group B Streptococcus and non-albicans yeasts. Prevotella species were increased in lactating women, whereas Prevotella timonensis increased in prevalence and concentration among adolescent and postmenopausal females and Prevotella bivia increased in prevalence among adolescent dapivirine ring users.
    Conclusions: Dapivirine vaginal ring use was associated with minimal changes in the vaginal microbiota that are likely not clinically significant.
    MeSH term(s) Adolescent ; Adult ; Contraceptive Devices, Female ; Female ; Humans ; Lactation ; Microbiota ; Postmenopause ; Pyrimidines ; Vagina/microbiology
    Chemical Substances Pyrimidines ; Dapivirine (TCN4MG2VXS)
    Language English
    Publishing date 2021-12-04
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiab590
    Database MEDical Literature Analysis and Retrieval System OnLINE

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