Association of characteristics of tampon use with menstrual toxic shock syndrome in France

Discovery of an antivirulence compound that targets the Staphylococcus aureus SaeRS two-component system to inhibit toxic shock syndrome toxin-1 production

Menstrual toxic shock syndrome (mTSS) is a rare but severe disorder associated with the use of menstrual products such as high-absorbency tampons and is caused by Staphylococcus aureus strains that produce the toxic shock syndrome toxin-1 (TSST-1) superantigen. Herein, we screened a library of 3920 small bioactive molecules for the ability to inhibit transcription of the TSST-1 gene without inhibiting the growth of S. aureus. The dominant positive regulator of TSST-1 is the SaeRS two-component system (TCS), and we identified phenazopyridine hydrochloride (PP-HCl) that repressed the production of TSST-1 by inhibiting the kinase function of SaeS. PP-HCl competed with ATP for binding of the kinase SaeS leading to decreased phosphorylation of SaeR and reduced expression of TSST-1 as well as several other secreted virulence factors known to be regulated by SaeRS. PP-HCl targets the virulence of S. aureus, and it also decreases the impact of TSST-1 on human lymphocytes without affecting the healthy vaginal microbiota. Our findings demonstrate the promising potential of PP-HCl as a therapeutic strategy against mTSS.

Period Poverty: Surveying the Prevalence in Toledo-Area Schools

Background: The lack of access to period products, which has been colloquially termed "period poverty," is a problem that millions of people face worldwide. Investigators have found that period poverty is a pervasive issue in the United States, despite its status as a high resource country. The purpose of this study was to determine the prevalence of period poverty in school-aged adolescents in Toledo, Ohio. Methods: This study used an observational cross-sectional design and was approved by the institutional review board. Participants completed a survey that assessed their access to period products, their level of understanding about their sexual/menstrual health, their feelings toward menstruation, and the perceived impact of periods on their lives. Results: Younger students were more likely to miss school due to lack of period products (p = 0.0084). To the question "Why don't you have pads or tampons?" 36.2% expressed financial concerns and 18.3% reported inadequate transportation. When asked whether students ever had to miss school due to their cycle, 9.4% identified a lack of products as their reason. Participants also reported high rates of absence from sports, work, spending time with family/friends, and theater/music practice due to their menstrual period. Discussion: As people across the globe experience period poverty, our study demonstrates evidence of this phenomenon among Toledo adolescents. Owing to the lack of access to menstrual hygiene products, students report repurposing miscellaneous items in place of pads or tampons, missing school or work, and associating negative connotations with their cycles.

A randomized, double-blind study on the safety and immunogenicity of rTSST-1 variant vaccine: phase 2 results

Background

Toxic shock syndrome toxin-1 (TSST-1) is a superantigen produced by Staphylococcus aureus that causes the life-threatening toxic shock syndrome. The development of a safe and immunogenic vaccine against TSST-1 remains an unmet medical need. We investigated the safety, tolerability and immunogenicity of a recombinant TSST-1 variant vaccine (rTSST-1v) after 1-3 injections in healthy volunteers.

Methods

In this randomised, double-blind, adjuvant-controlled, parallel-group, phase 2 trial, healthy adults aged 18-64 were randomly allocated to undergo 1-3 injections of either 10 or 100 μg rTSST-1v or Al(OH)3. The primary endpoint was safety and tolerability of rTSST-1v in the intention-to-treat population. The per-protocol population was used for the immunogenicity analysis. The trial is registered with EudraCT#: 2015-003714-24; ClinicalTrials.gov#: NCT02814708.

Findings

Between April and November 2017,140 subjects were enrolled and 126 completed the trial. rTSST-1v showed a good safety and tolerability profile. A total of 855 systemic adverse events occurred, 280 of which were suspected related adverse events, without dose dependency. Two participants were discontinued early because of allergic reactions. Seroconversion occurred in >81% of subjects within 3 months of the first immunisation which was sustained until 18 months after the third immunisation in over 70% of subjects in the pooled low-dose group and in over 85% in the pooled high-dose group.

Interpretation

rTSST-1v in cumulative doses of up to 300 μg was safe, well-tolerated and highly immunogenic. Two immunisations with 100 μg rTSST-1v provided the most persistent immune response and may be evaluated in future trials.

Funding

Biomedizinische Forschung & Bio-Produkte AG funded this study.

A Review on Initiatives for Promoting Better Menstrual Hygiene Practices and Management in India

Management of hygiene during menstruation is severely affected by the continued existence of several societal, cultural, and religious restrictions on menstruation and menstruation practices. Since they are frequently unprepared and unaware of their periods, especially in rural regions of the country, girls face a variety of hurdles and problems at home, in school, and at work. We observed from examining the studies that managing menstrual hygiene is affected by a lack of personal sanitation and inadequate, erroneous, or partial understanding of menstruation. Women either possess zero or minimal knowledge about genital infections, which are caused by poor personal hygiene during menstruation. Women in rural areas frequently lack access to sanitary items and have inadequate understanding of their sorts and applications, or cannot afford the high cost of such products. Females in rural areas must use washable cotton pads because of this, which they must use repeatedly. The requirements and desires of teenage girls and women continue to be disregarded, despite substantial developments in the water and sanitation industries. Menstrual products are disposed of in domestic garbage and public facilities when women are outside, while they are flushed down toilets at home without considering the risk of choking. Because of this, there should be a need to inform and educate individuals about the health risks and environmental problems connected to them. Reduced trash may be achieved by using modern techniques like incineration. Therefore, the importance of using natural or reusable sanitary products should be emphasized.

Social media exposure, interpersonal network, and tampon use intention: A multigroup comparison based on network structure

The scarcity of tampons in China has attracted scholarly attention. Extending the theory of planned behavior with social network structure, this cross-sectional online survey (N = 763) found that exposure to tampon-related information on social media was positively related to Chinese women's tampon use intentions. This association was mediated through attitudes, descriptive norms, and self-efficacy toward using tampons. Furthermore, the effects of social media exposure differed among people with different network structures. Our findings shed light on the promotion of nonconventional feminine hygiene products, which, in turn, may enhance Chinese women's well-being and gender equity across the globe.

Servicewomen's experiences of managing pelvic health in occupational settings

BACKGROUND

Despite increasing numbers of women serving in defence forces worldwide, little is currently known about how servicewomen manage their pelvic health in the traditionally male environment of the military.

OBJECTIVES

The aim of this study was to explore the impacts of pelvic health issues on Australian Defence Force servicewomen and their experiences of managing their pelvic health in occupational settings.

DESIGN

A qualitative hermeneutic design.

METHODS

Telephone interviews were conducted on six currently serving female members of the Australian Defence Force located Australia-wide. A semi-structured interview guide, based on the study objectives, was used to guide the audio-recorded interviews. Data were analysed thematically.

RESULTS

Nine themes were identified. The first six themes explored the experiences of servicewomen in maintaining their pelvic health, including suppressing the urge to go, adjusting hydration depending on toilet access, managing menstruation, regaining 'full' fitness postpartum, awareness and prevention of pelvic health conditions, and inhibiting conversations about women's health. The last three themes explored how servicewomen coped with pelvic health conditions, including self-managing symptoms, diagnosing and treating pelvic conditions, and support for servicewomen's pelvic health.

CONCLUSION

This study suggests workplace culture, low levels of insight into pelvic health norms, and limited healthcare strategies within the Australian Defence Force to support female pelvic health have contributed to servicewomen self-managing pelvic health issues using approaches that may have had significant impacts on their health and well-being.

Targeted Proteomics Analysis of Staphylococcal Superantigenic Toxins in Menstrual Fluid from Women with Menstrual Toxic Shock Syndrome (mTSS)

Menstrual toxic shock syndrome (mTSS) is a rare life-threatening febrile illness that occurs in women using intravaginal menstrual protection. It is caused by toxic shock syndrome toxin 1 (TSST-1) produced by Staphylococcus aureus, triggering a sudden onset of rash and hypotension, subsequently leading to multiple organ failure. Detecting TSST-1 and S. aureus virulence factors in menstrual fluid could accelerate the diagnosis and improve therapeutic management of mTSS. However, menstrual fluid is a highly complex matrix, making detection of bacterial toxins challenging. Here, we present a mass-spectrometry-based proteomics workflow for the targeted, quantitative analysis of four S. aureus superantigenic toxins in menstrual fluids (TSST-1, SEA, SEC, and SED). This method was applied to characterize toxin levels in menstrual fluids collected from patients with mTSS and healthy women. Toxins were detectable in samples from patients with mTSS and one healthy donor at concentrations ranging from 0 to 0.46 µg/mL for TSST-1, and 0 to 1.07 µg/mL for SEC. SEA and SED were never detected in clinical specimens, even though many S. aureus strains were positive for the corresponding genes. The method presented here could be used to explore toxin production in vivo in users of intravaginal devices to improve the diagnosis, understanding, and prevention of mTSS.

Superantigens, a Paradox of the Immune Response

Staphylococcal enterotoxins are a wide family of bacterial exotoxins with the capacity to activate as much as 20% of the host T cells, which is why they were called superantigens. Superantigens (SAgs) can cause multiple diseases in humans and cattle, ranging from mild to life-threatening infections. Almost all S. aureus isolates encode at least one of these toxins, though there is no complete knowledge about how their production is triggered. One of the main problems with the available evidence for these toxins is that most studies have been conducted with a few superantigens; however, the resulting characteristics are attributed to the whole group. Although these toxins share homology and a two-domain structure organization, the similarity ratio varies from 20 to 89% among different SAgs, implying wide heterogeneity. Furthermore, every attempt to structurally classify these proteins has failed to answer differential biological functionalities. Taking these concerns into account, it might not be appropriate to extrapolate all the information that is currently available to every staphylococcal SAg. Here, we aimed to gather the available information about all staphylococcal SAgs, considering their functions and pathogenicity, their ability to interact with the immune system as well as their capacity to be used as immunotherapeutic agents, resembling the two faces of Dr. Jekyll and Mr. Hyde.

Quantitative risk assessment of allergens leaching from menstrual hygiene products

Allergic contact dermatitis (ACD) often associated with the topical use of perfumed products, remains one of the most common chronic skin disorders in Western countries. Since labelling of scented menstrual hygiene products (MHPs) is not mandatory, women might be unknowingly exposed to allergens. Given that vaginal mucosae lack the vital barrier function of the skin, skin allergens can easily penetrate and become systemically available and hence women may experience adverse effects in the anogenital region. The aim of this study was therefore to investigate whether women using scented MHPs are at risk of sensitization and hence developing ACD. Hereto, a Quantitative Risk Assessment (QRA) is performed on four well-known skin sensitizing chemicals (α-isomethyl ionone, benzyl salicylate, hexyl cinnamaldehyde and heliotropine) that were previously found leaching from five different scented MHPs including tampons and sanitary pads. The amounts of heliotropine, leached by one of the investigated tampons, exceeded acceptable exposure levels determined with the QRA and could induce sensitization. In addition, although no sensitization is expected for the other three compounds, an allergenic reaction might be provoked in women who are already sensitized. Labelling of allergens on scented MHPs would therefore help consumers to prevent adverse effects linked to ACD.

Toxic shock syndrome associated with menstrual cup use

Staphylococcal toxic shock syndrome is a rare but life-threatening condition. It occurs when Staphylococcus aureus bacteria colonizing the vagina of a healthy woman, produce toxic shock syndrome toxin 1 activating the immune system and leading to multiorgan failure. Menstrual cups also known as vaginal cups are usually used as alternatives to other intravaginal products for menstrual blood collection. In rare cases, they can also lead to toxic shock syndrome. We report a case of toxic shock syndrome associated with vaginal cup use in a healthy menstruating woman. The diagnosis was made based on the United States Centers for Disease Control and Prevention criteria of the syndrome and confirmed with a vaginal cultural growth of Staphylococcus aureus.

Menstrual toxic shock syndrome: a French nationwide multicenter retrospective study

BACKGROUND

Studies describing the clinical features and short-term prognosis of patients admitted to the intensive care unit (ICU) for menstrual toxic shock syndrome (m-TSS) are lacking.

METHODS

This was a multicenter retrospective cohort study of patients with a clinical diagnosis of m-TSS admitted between January 1, 2005 and December 31, 2020 in 43 French pediatric (n=7) or adult (n=36) ICUs. The aim of the study was to describe the clinical features and short-term prognosis, as well as assess the 2011 Centers for Disease and Control (CDC) diagnostic criteria, of critically ill patients with m-TSS.

RESULTS

In total, 102 patients with m-TSS (median age: 18 [16-24] years) were admitted to one of the participating ICUs. All blood cultures (n=102) were sterile. Methicillin-sensitive Staphylococcus aureus grew from 92 of 96 vaginal samples. Screening for super-antigenic toxin gene sequences was performed for 76 of the 92 (83%) vaginal samples positive for Staphylococcus aureus and TSST-1 isolated from 66 (87%) strains. At ICU admission, no patient met the 2011 CDC criteria for confirmed m-TSS and only 53 (52%) fulfilled the criteria for probable m-TSS. Eighty-one patients (79%) were treated with anti-toxin antibiotic therapy and eight (8%) received intravenous immunoglobulins. Eighty-six (84%) patients required vasopressors and 21 (21%) tracheal intubation. No patient required limb amputation or died in the ICU.

CONCLUSIONS

In this large multicenter series of patients included in ICUs for m-TSS, none died or required limb amputation. The CDC criteria should not be used for the clinical diagnosis of m-TSS at ICU admission.

Vaginal Tampon Colonization by Staphylococcus aureus in Healthy Women

Tampons recovered from a cohort of 737 healthy women (median age, 32 years) were analyzed for the presence of Staphylococcus aureus A total of 198 tampons (27%) were colonized by S. aureus, 28 (4%) by a strain producing toxic shock syndrome toxin 1 (TSST-1). S. aureus was detected more frequently in tampons that did not require an applicator for their insertion (74/233 [32%] versus 90/381 [24%]; odds ratio [OR] = 1.51 [95% confidence interval, 1.04 to 2.17]) and in women who used an intrauterine device for contraception (53/155 [34%] versus 145/572 [27%]; OR = 1.53 [95% confidence interval, 1.05 to 2.24]). The S. aureus strains isolated from tampons belonged to 22 different clonal complexes (CCs). The most prevalent CC was CC398 agr1 (n = 57 [27%]), a clone that does not produce superantigenic toxins, followed by CC30 agr3 (n = 27, 13%), producing TSST-1 (24/27 [89%]), the principal clone of S. aureus involved in menstrual toxic shock syndrome (MTSS).IMPORTANCE Menstrual toxic shock syndrome (MTSS) is an uncommon severe acute disease that occurs in healthy menstruating women colonized by TSST-1-producing S. aureus who use intravaginal protection, such as tampons and menstrual cups. The catamenial product collected by the protection serves as a growth medium for S. aureus and allows TSST-1 production. Previous studies evaluated the prevalence of genital colonization by S. aureus by vaginal swabbing, but they did not examine tampon colonization. This study demonstrated a high prevalence of tampon colonization by S. aureus and the presence of the CC30 TSST-1 S. aureus clone responsible for MTSS in tampons from healthy women. The results support the vaginal carriage of this lineage in healthy women. In addition, the higher prevalence of S. aureus within tampons that do not require an applicator indicates a crucial role for handwashing before tampon handling to decrease the risk of tampon contamination.