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Canadian Family Physician Medecin de... Jun 2017
Review
Topics: Antifungal Agents; Candidiasis, Vulvovaginal; Female; Humans; Randomized Controlled Trials as Topic; Recurrence; Secondary Prevention
PubMed: 28615397
DOI: No ID Found -
European Journal of Pediatrics Dec 2022Vulvovaginitis is a common and challenging gynaecological problem in prepubertal and pubertal girls. Such an infection, owing to a wide range of aetiologies, if not...
UNLABELLED
Vulvovaginitis is a common and challenging gynaecological problem in prepubertal and pubertal girls. Such an infection, owing to a wide range of aetiologies, if not responding to hygienic measures, needs further investigation through vaginal cultures, since treatment should be tailored accordingly. This study aimed to investigate the pathogens isolated in prepubertal and pubertal girls with signs and symptoms of vulvovaginitis. A total of 2314 symptomatic girls, 1094 prepubertal and 1220 pubertal, aged 2 to 16 years, were included. Vaginal samples were inoculated on specific culture plates followed by incubation in aerobic, anaerobic or CO atmosphere at 37 °C for 24 or 48 h, as appropriate. The identification of the isolated pathogens was carried out using Gram stain, conventional methods and the automated system VITEK 2 (BioMerieux, Marcy l'Etoile, France). Positive cultures were obtained from 587 (53.7%) of prepubertal girls and 926 (75.9%) of pubertal girls. A total of 613 and 984 pathogens were detected in prepubertal and pubertal subjects, respectively. Isolated bacteria included 40.1% and 22.8% Gram-positive cocci, 35.6% and 24.8% Gram-negative rods in the prepubertal and pubertal groups, respectively, with faecal pathogens being the most prevalent. Bacterial vaginosis was diagnosed in 22.8% of prepubertal and 37.9% of pubertal girls. Candida species were isolated mostly in the pubertal girls (14.5%).
CONCLUSION
Culture results should be evaluated with caution in children with vulvovaginitis. In the prepubertal girls, the most common isolated pathogens were opportunistic bacteria of faecal origin while girls in late puberty were more susceptible to bacterial vaginosis and vulvovaginal candidiasis.
WHAT IS KNOWN
• Vulvovaginitis is the most frequent and challenging reason for referral to paediatric and adolescent gynaecology services. • Microbiological examination can prove to be a significant tool to help diagnosis although results should be evaluated with caution in children.
WHAT IS NEW
• Significantly more positive vaginal cultures and pathogens were recorded in symptomatic pubertal girls compared to prepubertal children. • The prevalence of bacterial vaginosis was increased in both prepubertal and pubertal girls with vulvovaginitis although significantly more in girls at puberty.
Topics: Adolescent; Female; Child; Humans; Male; Vaginosis, Bacterial; Vulvovaginitis; France
PubMed: 36163515
DOI: 10.1007/s00431-022-04631-4 -
Frontiers in Cellular and Infection... 2023-mediated vulvovaginal candidiasis (VVC) is a significant challenge in clinical settings, owing to the inefficacy of current antifungals in modulating virulence,... (Review)
Review
-mediated vulvovaginal candidiasis (VVC) is a significant challenge in clinical settings, owing to the inefficacy of current antifungals in modulating virulence, development of resistance, and poor penetration into the biofilm matrix. Various predisposition factors are molecular drivers that lead to the dysbiosis of normal microflora of the vagina, upregulation of central metabolic pathways, morphogenesis, hyphal extension, adhesion, invasion, and biofilm formation leading to chronic infection and recurrence. Hence, it is crucial to understand the molecular mechanism behind the virulence pathways driven by those drivers to decode the drug targets. Finding innovative solutions targeting fungal virulence/biofilm may potentiate the antifungals at low concentrations without affecting the recurrence of resistance. With this background, the present review details the critical molecular drivers and associated network of virulence pathways, possible drug targets, target-specific inhibitors, and probable mode of drug delivery to cross the preclinical phase by appropriate models.
Topics: Female; Humans; Candidiasis, Vulvovaginal; Candida albicans; Antifungal Agents; Vagina; Virulence
PubMed: 37900321
DOI: 10.3389/fcimb.2023.1245808 -
Microbiology Spectrum Jun 2023Vulvovaginal candidiasis (VVC) can alter the vaginal microbiome composition and structure, and this may be correlated with its variable treatment efficacy. Integrated...
Vulvovaginal candidiasis (VVC) can alter the vaginal microbiome composition and structure, and this may be correlated with its variable treatment efficacy. Integrated analysis of the mycobiome and bacteriome in VVC could facilitate accurate diagnosis of infected patients and further decipher the characterized bacteriome in different types of VVC. Our mycobiome analysis determined two common types of VVC, which were clustered into two community state types (CSTs) featured by Candida glabrata (CST I) and Candida albicans (CST II). Subsequently, we compared the vaginal bacteriome in two CSTs of VVC and two other types of reproductive tract infections (RTIs), bacterial vaginosis (BV) and Ureaplasma urealyticum (UU) infection. The vaginal bacteriome in VVC patients was between the healthy and other RTIs (BV and UU) status, it bore the greatest resemblance to that of healthy subjects. While BV and UU patients have the unique vaginal microbiota community structure, which very different with healthy women. Compared with CST II, the vaginal bacteriome of CST I VVC was characterized by a key signature in BV. In comparison, CST II was featured by , the pathogen of UU. The findings of our study highlight the need for co-analysis and simultaneous consideration of vaginal mycobiome and bacteriome in the diagnosis and treatment of VVC to solve common clinical problems, such as unsatisfactory cure rates and recurrent symptoms. Fungi headed by C. albicans play a critical role in VVC but are not sufficient for its occurrence, indicating the involvement of other factors, such as the vaginal bacteriome. We found that different CST correspond to different bacterial composition in patients with VVC, and this could underlie the alteration of vaginal microorganism environment in VVC patients. We believe that this correlation should not be ignored, and it may be related to the unsatisfactory treatment outcomes and high recurrence rate of VVC. Here, we provided evidence for associations between vaginal bacteriome patterns and fungal infection. Screening specific biomarkers for three common RTIs paves a theoretical basis for further development of personalized precision treatment.
Topics: Humans; Female; Candidiasis, Vulvovaginal; Mycobiome; Vagina; Candida albicans; Vaginosis, Bacterial
PubMed: 36995230
DOI: 10.1128/spectrum.03152-22 -
European Journal of Clinical... Jun 2021The present study focused on the characteristics of the vaginal microbiomes in prepubertal girls with and without vulvovaginitis. We collected 24 vaginal samples and 16... (Comparative Study)
Comparative Study
The present study focused on the characteristics of the vaginal microbiomes in prepubertal girls with and without vulvovaginitis. We collected 24 vaginal samples and 16 fecal samples from 10 girls aged 3-9 years with vulvovaginitis and 16 healthy girls of the same age. The samples were divided into three groups: fecal swabs from healthy controls (HF), vaginal swabs from healthy controls (HVS), and vaginal swabs from girls with vulvovaginitis (VVS). Sequencing of the V3-V4 region of the 16S rDNA gene was performed with the NovaSeq PE250 platform to reveal the vaginal microbial community structure in healthy prepubertal girls and vulvovaginitis-associated microbiota. The intestinal microbiomes of healthy children were also analyzed for comparison. This study revealed that the healthy vaginal tract in prepubertal girls was dominated by Prevotella, Porphyromonas, Ezakiella, and Peptoniphilus species, with a high diversity of microbiota. The vulvovaginitis-associated microbiota were dominated by Streptococcus, Prevotella, Haemophilus, and Granulicatella, with lower diversity than that in healthy girls. Furthermore, the compositions of the vaginal and intestinal microbiomes were completely different. ANOSIM, MRPP, Adonis, and AMOVA were used to analyze the beta diversity, and the results showed that there were significant differences in the microbial communities among the three groups. Lactobacillus deficiency and high bacterial diversity were characteristics of the vaginal microbiome in healthy prepubertal girls; this is inconsistent with that in reproductive-age women. The vulvovaginitis-associated vaginal microbiota differed dramatically from normal microbiota, and the main causative agents were not fecal in origin.
Topics: Bacteria; Child; Child, Preschool; Female; Humans; Microbiota; Phylogeny; Vagina; Vulvovaginitis
PubMed: 33452946
DOI: 10.1007/s10096-021-04152-2 -
Revista Brasileira de Ginecologia E... 2024• The balanced vaginal microbiome is the main factor defending the vaginal environment against infections. Lactobacilli play a key role in this regard, maintaining the... (Review)
Review
• The balanced vaginal microbiome is the main factor defending the vaginal environment against infections. Lactobacilli play a key role in this regard, maintaining the vaginal pH within the normal range (3.8 to 4.5). •Hormonal and immune adaptations resulting from pregnancy influence changes in the vaginal microbiome during pregnancy. •An altered vaginal microbiome predisposes to human immunodeficiency virus (HIV) infection. •Bacterial vaginosis is the main clinical expression of an imbalanced vaginal microbiome. •Vulvovaginal candidiasis depends more on the host's conditions than on the etiological agent. • is a protozoan transmitted during sexual intercourse. •The use of probiotics is not approved for use in pregnant women.
Topics: Humans; Female; Pregnancy; Pregnancy Complications, Infectious; Vulvovaginitis; Microbiota; Vagina; Vaginosis, Bacterial
PubMed: 38765512
DOI: 10.61622/rbgo/2024FPS03 -
American Family Physician Sep 2000Vaginitis is the most common gynecologic diagnosis in the primary care setting. In approximately 90 percent of affected women, this condition occurs secondary to... (Review)
Review
Vaginitis is the most common gynecologic diagnosis in the primary care setting. In approximately 90 percent of affected women, this condition occurs secondary to bacterial vaginosis, vulvovaginal candidiasis or trichomoniasis. Vaginitis develops when the vaginal flora has been altered by introduction of a pathogen or by changes in the vaginal environment that allow pathogens to proliferate. The evaluation of vaginitis requires a directed history and physical examination, with focus on the site of involvement and the characteristics of the vaginal discharge. The laboratory evaluation includes microscopic examination of a saline wet-mount preparation and a potassium hydroxide preparation, a litmus test for the pH of vaginal secretions and a "whiff" test. Metronidazole is the primary treatment for bacterial vaginosis and trichomoniasis. Topical antifungal agents are the first-line treatments for candidal vaginitis.
Topics: Antifungal Agents; Candidiasis; Decision Trees; Diagnosis, Differential; Female; Humans; Trichomonas Vaginitis; Vaginitis; Vaginosis, Bacterial; Vulvovaginitis
PubMed: 10997533
DOI: No ID Found -
PLoS Pathogens Nov 2023
Topics: Female; Humans; Candidiasis, Vulvovaginal; Recurrence; Antifungal Agents
PubMed: 37948448
DOI: 10.1371/journal.ppat.1011684 -
MBio May 2018Trained immunity was originally proposed as a program of innate immunity memory by innate immunity cells of hematopoietic origin such as the monocytes/macrophages and... (Review)
Review
Trained immunity was originally proposed as a program of innate immunity memory by innate immunity cells of hematopoietic origin such as the monocytes/macrophages and the NK cells. Here I discuss some old and new data justifying this program and some specific, still unanswered, questions it raises regarding the model fungus and the chronic, inflammatory vulvovaginal disease it causes. Building upon this well-established program, the recent reports that epithelial cells of mammals can also acquire memory from previous stimulations, and the apparent intrinsic ability of many living cells from bacteria to mammals to learn from experience, I suggest an expansion of the concept of trained immunity to include all cells of different lineages with the potential of memorizing previous microbial encounters. This expansion would better fit the complexity of innate immunity and the role it plays in infectious and inflammatory diseases.
Topics: Adaptive Immunity; Animals; Candida albicans; Candidiasis, Vulvovaginal; Cytokines; Female; Humans; Immunity, Innate; Killer Cells, Natural
PubMed: 29789368
DOI: 10.1128/mBio.00570-18 -
Journal of Pediatric and Adolescent... Dec 2019To evaluate genital microbiological findings in prepubertal girls with vulvovaginitis and in healthy controls.
STUDY OBJECTIVE
To evaluate genital microbiological findings in prepubertal girls with vulvovaginitis and in healthy controls.
DESIGN
Prospective case-control study.
SETTING
Pediatric Outpatient unit of the Department of Pediatrics of the Hospital of the Lithuanian University of Health Sciences Kauno Klinikos from November 2014 to May 2017.
PARTICIPANTS
Fifty-two prepubertal girls aged 1-9 years diagnosed with vulvovaginitis, and 42 age-matched healthy controls.
INTERVENTIONS AND MAIN OUTCOME MEASURES
Samples for microbiological culture were collected using sterile cotton swabs from the introitus and the lower third of the vagina from all study participants. Microbiological findings were analyzed according to bacteria type and intensity of growth.
RESULTS
Most of the vaginal microbiological swab results were positive for bacterial growth: 47 (90.4%) and 34 (80.9%) were similar in the study and control groups, respectively (P = .24). Sixteen (30.8%) and 9 (21.4%) of the microbiological traits results in the case and control groups, respectively, were regarded as potential causative agents (P = .27). Streptococcus pyogenes was the most frequent pathogen in the study group (P = .03); all other microorganisms detected as either a pure or dominant growth in the control group, were considered opportunistic.
CONCLUSIONS
Vaginal bacterial culture results were positive in prepubertal girls with vulvovaginitis and in healthy controls. Nonspecific vulvovaginitis without a dominant/isolated pathogen was seen to be more common than vulvovaginitis with a potential causative agent. Clinical symptoms were more frequent among girls when the potential infectious agent was identified.
Topics: Case-Control Studies; Child; Child, Preschool; Female; Humans; Infant; Prospective Studies; Streptococcus pyogenes; Vagina; Vulvovaginitis
PubMed: 31445141
DOI: 10.1016/j.jpag.2019.08.009