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Matějková T, Dodoková A, Kreisinger J, Stopka P, Stopková R. Microbial, proteomic, and metabolomic profiling of the estrous cycle in wild house mice. Microbiol Spectr 2024; 12:e0203723. [PMID: 38171017 PMCID: PMC10846187 DOI: 10.1128/spectrum.02037-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024] Open
Abstract
Symbiotic microbial communities affect the host immune system and produce molecules contributing to the odor of an individual. In many mammalian species, saliva and vaginal fluids are important sources of chemical signals that originate from bacterial metabolism and may act as honest signals of health and reproductive status. In this study, we aimed to define oral and vaginal microbiomes and their dynamics throughout the estrous cycle in wild house mice. In addition, we analyzed a subset of vaginal proteomes and metabolomes to detect potential interactions with microbiomes. 16S rRNA sequencing revealed that both saliva and vagina are dominated by Firmicutes and Proteobacteria but differ at the genus level. The oral microbiome is more stable during the estrous cycle and most abundant bacteria belong to the genera Gemella and Streptococcus, while the vaginal microbiome shows higher bacterial diversity and dynamics during the reproductive cycle and is characterized by the dominance of Muribacter and Rodentibacter. These two genera cover around 50% of the bacterial community during estrus. Proteomic profiling of vaginal fluids revealed specific protein patterns associated with different estrous phases. Highly expressed proteins in estrus involve the keratinization process thus providing estrus markers (e.g., Hrnr) while some proteins are downregulated such as immune-related proteins that limit bacterial growth (Camp, Clu, Elane, Lyz2, and Ngp). The vaginal metabolome contains volatile compounds potentially involved in chemical communication, for example, ketones, aldehydes, and esters of carboxylic acids. Data integration of all three OMICs data sets revealed high correlations, thus providing evidence that microbiomes, host proteomes, and metabolomes may interact.IMPORTANCEOur data revealed dynamic changes in vaginal, but not salivary, microbiome composition during the reproductive cycle of wild mice. With multiple OMICs platforms, we provide evidence that changes in microbiota in the vaginal environment are accompanied by changes in the proteomic and metabolomics profiles of the host. This study describes the natural microbiota of wild mice and may contribute to a better understanding of microbiome-host immune system interactions during the hormonal and cellular changes in the female reproductive tract. Moreover, analysis of volatiles in the vaginal fluid shows particular substances that can be involved in chemical communication and reproductive behavior.
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Affiliation(s)
- Tereza Matějková
- Department of Zoology, Faculty of Science, Charles University, BIOCEV, Vestec, Czechia
| | - Alica Dodoková
- Department of Zoology, Faculty of Science, Charles University, BIOCEV, Vestec, Czechia
| | - Jakub Kreisinger
- Department of Zoology, Faculty of Science, Charles University, BIOCEV, Vestec, Czechia
| | - Pavel Stopka
- Department of Zoology, Faculty of Science, Charles University, BIOCEV, Vestec, Czechia
| | - Romana Stopková
- Department of Zoology, Faculty of Science, Charles University, BIOCEV, Vestec, Czechia
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Graziottin A. Maintaining vulvar, vaginal and perineal health: Clinical considerations. WOMEN'S HEALTH (LONDON, ENGLAND) 2024; 20:17455057231223716. [PMID: 38396383 PMCID: PMC10894559 DOI: 10.1177/17455057231223716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/31/2023] [Accepted: 12/13/2023] [Indexed: 02/25/2024]
Abstract
Knowledge of female genital anatomy and physiology is often inadequate or incorrect among women. Precise patient-physician conversations can be inhibited by a reluctance or inability to speak accurately about the vulva and vagina, with the terms often being used interchangeably. There is a paucity of scientific evidence and clinical guidelines to support women and physicians in ensuring best practices in feminine hygiene. In this review, the unmet needs in the field are highlighted. Evidence is provided for the complex array of physiological and pathological systems, mechanisms and behaviours that either protect or, if inappropriate, predispose the vulva and vagina to infections, irritation or other conditions. The need for attention to perineal health is recommended, given the interdependence of perineal and vulvar microbiota and the risk of colonic pathogens reaching the vulva and the vagina. Differences in feminine hygiene practices can vary widely across the world and among varying age groups, and suboptimal habits (such as vaginal douching or the use of certain cleansers) can be associated with increased risks of vulvar and vaginal conditions. Critical areas for discussion when advising women on their intimate health include: advice surrounding aesthetic vulvar cosmetic trends (such as depilation and genital cosmetic surgery), bowel health and habits, and protection against sexually transmitted infections. Routine, once-daily (maximum twice-daily) washing of the vulva with a pH-balanced, mild cleanser is optimal, ideally soon after bowel voiding, when feasible. Due to the finely balanced ecosystems of the vulva, the vagina and the perineal area, a scientific and clinical perspective is essential when determining the most appropriate vulvar cleansers based on their components. Correct intimate care may contribute to improved genital and sexual health and overall well-being. An increased awareness of correct practices will empower women to be the advocates of their own intimate health.
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Affiliation(s)
- Alessandra Graziottin
- Centre of Gynaecology and Medical Sexology, San Raffaele Resnati Hospital, Milan, Italy
- Specialty School, Department of Obstetrics and Gynecology, University of Verona, Verona, Italy
- Specialty School of Endocrinology and Metabolic Disease, Federico II University, Naples, Italy
- Alessandra Graziottin Foundation for the Cure and Care of Pain in Women, NPO, Milan, Italy
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Zucon Bacelar AC, Momesso NR, Pederro FHM, Gonçalves A, Ervolino E, Chaves-Neto AH, Biguetti CC, Matsumoto MA. Aged and induced-premature ovarian failure mouse models affect diestrus profile and ovarian features. PLoS One 2023; 18:e0284887. [PMID: 38064437 PMCID: PMC10707698 DOI: 10.1371/journal.pone.0284887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/11/2023] [Indexed: 12/18/2023] Open
Abstract
Sex hormones exert a wide influence on several systems of the human body, especially in women, who undergo intense changes in the trans and postmenopausal periods. Different experimental models are used to mimic these conditions; however, the impact on hormonal profile may be different. This study aimed to analyze and compare vaginal cytology of different post-estropausal mice models, along with their microscopical ovarian features. Forty-six C57BL/6J female mice with the ages of 4, 6 and 18 months at the beginning of the experiment, weighing about 25-28 grams, constituted five groups: NC-(negative control) animals with no treatment, OVX-SHAM-sham ovariectomized, OVX-ovariectomized, VCD-medicated with 160 mg/kg/day of 4-vinylcyclohexene diepoxide via IP for 20 consecutive days, and Aged-senescent mice under physiological estropause. Euthanasia was performed at different periods for the removal of the ovaries, and after diestrus was confirmed by vaginal cytology for 10 consecutive days. For daily vaginal cytology, morphological and histomorphometric microscopic analyzes were performed. Aged mice presented significant increased neutrophils when compared to VCD group, as well as increased cornified epithelial cells when compared to OVX mice, and also increased nucleated epithelial cells when compared to VCD and OVX. NC and OVX-SHAM ovaries presented innumerous follicles at different stages of development, while VCD showed marked follicular atresia, depleted of primordial or developing follicles and a predominance of interstitial cells. The ovaries of aged mice were predominantly constituted by corpus luteum degenerated into corpus albicans, with rare antral follicles. All analyzed models led to different permanent diestrus profiles caused by each model, as indicated by ovarian features. This should be carefully considered when choosing a post-estropausal experimental model, in order to better correlate this challenging phase of female's life with physiological/pathological conditions.
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Affiliation(s)
- Ana Carolina Zucon Bacelar
- Department of Diagnostics and Surgery, São Paulo State University—Unesp, Araçatuba, School of Dentistry, São Paulo, Brazil
| | - Nataira Regina Momesso
- Department of Diagnostics and Surgery, São Paulo State University—Unesp, Araçatuba, School of Dentistry, São Paulo, Brazil
| | - Felipe Haddad Martim Pederro
- Department of Basic Sciences, São Paulo State University—Unesp, Araçatuba School of Dentistry, São Paulo, Brazil
| | - Alaíde Gonçalves
- Department of Basic Sciences, São Paulo State University—Unesp, Araçatuba School of Dentistry, São Paulo, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, São Paulo State University—Unesp, Araçatuba School of Dentistry, São Paulo, Brazil
| | | | - Claudia Cristina Biguetti
- School of Podiatric Medicine, The University of Texas at Rio Grande Valley (UTRGV), Rio Grande Valley, Texas, United States of America
| | - Mariza Akemi Matsumoto
- Department of Basic Sciences, São Paulo State University—Unesp, Araçatuba School of Dentistry, São Paulo, Brazil
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Asghari KM, Dolatkhah N, Ayromlou H, Mirnasiri F, Dadfar T, Hashemian M. The effect of probiotic supplementation on the clinical and para-clinical findings of multiple sclerosis: a randomized clinical trial. Sci Rep 2023; 13:18577. [PMID: 37903945 PMCID: PMC10616192 DOI: 10.1038/s41598-023-46047-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/26/2023] [Indexed: 11/01/2023] Open
Abstract
Multiple Sclerosis (MS) is a chronic demyelination disease of the central nervous system (CNS). The gut-brain axis involves communication between the nervous, endocrine, and immune systems. Probiotics can positively impact immune and inflammatory responses by regulating gut microbiota. A total of 40 MS patients (average age of 34.38 ± 6.65) were examined to determine the effect of the Saccharomyces boulardii supplement for four months compared to a placebo. The results showed that the Saccharomyces boulardii significantly decreased the inflammatory marker high-sensitivity C-reactive protein (hs-CRP) compared to the placebo (P < 0.001). The serum antioxidant capacity (TAC) also increased significantly in the probiotic group compared to the placebo (p = 0.004). Both the probiotic and placebo groups showed a reduction in the oxidative stress indicator malondialdehyde (MDA), but there was no significant difference between the two groups. Pain intensity (measured by Visual Analogue Scale) and fatigue severity (measured by Fatigue Severity Scale) significantly decreased in the probiotic group compared to the placebo (p = 0.004 and p = 0.01, respectively). The probiotic group experienced significant improvement in some quality of life scales (measured by 36-Item Short Form Survey) and somatic and social dysfunction subscale of General Health Questionnaire scores compared to the placebo group (p = 0.01). The study suggests that the Saccharomyces boulardii probiotic supplement may benefit inflammatory markers, oxidative stress indicators, pain, fatigue, and quality of life in MS patients.
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Affiliation(s)
- Kimia Motlagh Asghari
- Physical Medicine and Rehabilitation Research Center, Emam Reza Hospital, Tabriz University of Medical Sciences, Golgasht, Azadi Ave., Tabriz, Iran
| | - Neda Dolatkhah
- Physical Medicine and Rehabilitation Research Center, Emam Reza Hospital, Tabriz University of Medical Sciences, Golgasht, Azadi Ave., Tabriz, Iran.
| | - Hormoz Ayromlou
- Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Mirnasiri
- Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Taher Dadfar
- Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Hashemian
- Department of Biology, School of Arts and Sciences, Utica University, Utica, USA
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Mamat @ Yusof MN, Chew KT, Kampan NC, Shafiee MN. Expression of PD-1 and PD-L1 in Endometrial Cancer: Molecular and Clinical Significance. Int J Mol Sci 2023; 24:15233. [PMID: 37894913 PMCID: PMC10607163 DOI: 10.3390/ijms242015233] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
The landscape of diagnosing and treating endometrial cancer is undergoing a profound transformation due to the integration of molecular analysis and innovative therapeutic approaches. For several decades, the cornerstone treatments for endometrial cancer have included surgical resection, cytotoxic chemotherapy, hormonal therapy, and radiation therapy. However, in recent years, the concept of personalised medicine has gained momentum, reshaping the way clinicians approach cancer treatment. Tailoring treatments based on specific biomarkers has evolved into a standard practice in both initial and recurrent therapy protocols. This review aims to provide an in-depth exploration of the current state of molecular analysis and treatment strategies in the context of endometrial cancer, focusing on the immunological aspect of the PD-1/PD-L1 axis. Furthermore, it seeks to shed light on emerging and innovative approaches that hold promise for the future modulation of endometrial cancer treatments. In essence, as researchers delve into the complex molecular landscape of endometrial cancer and harness the understanding of the PD-1/PD-L1 axis, we are paving the way for more targeted, effective, and personalised therapies that have the potential to significantly improve the outcomes and quality of life for patients with this challenging disease.
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Affiliation(s)
| | | | | | - Mohamad Nasir Shafiee
- Gynaecologic-Oncology Unit, Department of Obstetrics and Gynaecology, Hospital Canselor Tuanku Muhriz, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
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Turek J, Gąsior Ł. Estrogen fluctuations during the menopausal transition are a risk factor for depressive disorders. Pharmacol Rep 2023; 75:32-43. [PMID: 36639604 PMCID: PMC9889489 DOI: 10.1007/s43440-022-00444-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 01/15/2023]
Abstract
Women are significantly more likely to develop depression than men. Fluctuations in the ovarian estrogen hormone levels are closely linked with women's well-being. This narrative review discusses the available knowledge on the role of estrogen in modulating brain function and the correlation between changes in estrogen levels and the development of depression. Equally discussed are the possible mechanisms underlying these effects, including the role of estrogen in modulating brain-derived neurotrophic factor activity, serotonin neurotransmission, as well as the induction of inflammatory response and changes in metabolic activity, are discussed.
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Affiliation(s)
- Justyna Turek
- Department of Neurobiology, Maj Institute of Pharmacology Polish Academy of Sciences, Smetna 12 Street, 31-343 Krakow, Poland
| | - Łukasz Gąsior
- Department of Neurobiology, Maj Institute of Pharmacology Polish Academy of Sciences, Smetna 12 Street, 31-343 Krakow, Poland
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Latorre MC, Gómez‐Oro C, Olivera‐Valle I, Blazquez‐Lopez E, Gallego‐Valle J, Ibañez‐Escribano A, Casesnoves P, González‐Cucharero C, Muñoz‐Fernandez MA, Sanz L, Vaquero J, Martín‐Rabadań P, Perez‐Milan F, Relloso M. Vaginal neutrophil infiltration is contingent on ovarian cycle phase and independent of pathogen infection. Front Immunol 2022; 13:1031941. [PMID: 36569947 PMCID: PMC9771706 DOI: 10.3389/fimmu.2022.1031941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
The mucosa of the female reproductive tract must reconcile the presence of commensal microbiota and the transit of exogenous spermatozoa with the elimination of sexually transmitted pathogens. In the vagina, neutrophils are the principal cellular arm of innate immunity and constitute the first line of protection in response to infections or injury. Neutrophils are absent from the vaginal lumen during the ovulatory phase, probably to allow sperm to fertilize; however, the mechanisms that regulate neutrophil influx to the vagina in response to aggressions remain controversial. We have used mouse inseminations and infections of Neisseria gonorrhoeae, Candida albicans, Trichomonas vaginalis, and HSV-2 models. We demonstrate that neutrophil infiltration of the vaginal mucosa is distinctively contingent on the ovarian cycle phase and independent of the sperm and pathogen challenge, probably to prevent sperm from being attacked by neutrophils. Neutrophils extravasation is a multi-step cascade of events, which includes their adhesion through selectins (E, P and L) and integrins of the endothelial cells. We have discovered that cervical endothelial cells expressed selectin-E (SELE, CD62E) to favor neutrophils recruitment and estradiol down-regulated SELE expression during ovulation, which impaired neutrophil transendothelial migration and orchestrated sperm tolerance. Progesterone up-regulated SELE to restore surveillance after ovulation.
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Affiliation(s)
- M. C. Latorre
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - C. Gómez‐Oro
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - I. Olivera‐Valle
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - E. Blazquez‐Lopez
- Hepatología-Servicio de Aparato Digestivo, Hospital General Universitario Gregorio Marañón, Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - J. Gallego‐Valle
- Laboratorio de InmunoRegulacion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - A. Ibañez‐Escribano
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - P. Casesnoves
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - C. González‐Cucharero
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - M. A. Muñoz‐Fernandez
- Laboratorio InmunoBiologia Molecular, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - L. Sanz
- Molecular Immunology Unit, Biomedical Research Institute Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - J. Vaquero
- Hepatología-Servicio de Aparato Digestivo, Hospital General Universitario Gregorio Marañón, Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - P. Martín‐Rabadań
- Servicio de Microbiología Clínica y Enfermedades Infecciosas, Hospital General Universitarion Gregorio Marañón (HGUGM), Madrid, Spain
| | - F. Perez‐Milan
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain,Servicio de Obstetricia y Ginecología, Hospital General Universitario Gregorio Marañón, Madrid, Spain,*Correspondence: M. Relloso, ; F. Perez‐Milan,
| | - M. Relloso
- Laboratorio de InmunoReproduccion, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain,*Correspondence: M. Relloso, ; F. Perez‐Milan,
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Embryo-Uterine Cross-Talk: Exploration of the Immunomodulatory Mechanism in Buffalo. Animals (Basel) 2022; 12:ani12223138. [PMID: 36428366 PMCID: PMC9686726 DOI: 10.3390/ani12223138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/02/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
Understanding the molecular cross-talk between the embryo and uterine endometrium is crucial for the improvement of IVF outcomes. The present work was undertaken to investigate the effect of pre-implantation embryo on the expression profile of immune-related genes in uterine epithelial cells (UECs) and PBMCs in buffalo. UECs were isolated from slaughterhouse-derived non-gravid uteri, cultured ex vivo and characterized, and buffalo embryos were produced in vitro from slaughterhouse-derived ovaries. Embryos co-cultured with steroid-treated UECs significantly stimulated (p < 0.05) the relative mRNA abundance of PTGS2, ISG15, OAS1, MX2, IFNAR1 and IFNAR2 in UECs while they significantly suppressed the mRNA expression of NFkβIA, NFkβ2, TNFα and IL1B, with no significant change in TGFβ1 and IL10 in the co-culture of embryos with UECs. In vitro treatment of PBMCs with conditioned media (CM) derived from embryos as well as UEC−embryo co-culture upregulated the mRNA abundance of ISG15, TGFβ1, PTGS2OAS1, MX2 and STAT1 while it downregulated IL17 and TNFα expression. The expression of IFNAR1 and IFNAR2 was elevated in PBMCs cultured in embryo-derived CM, but there was no significant change in PBMCs cultured in UEC−embryo co-culture CM. Thus, it can be concluded that the developing embryo and its secretions modulate the expression of immune responses by inducing an anti-inflammatory action in uterine epithelial cells for acceptance of the semi-allogenic embryo in the uterus to sustain pregnancy in buffalo.
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Haruna M, Daramola AO, Awolola NA, Badr NM, Banjo AAF, Shaaban A. Clinicopathological features and androgen receptor expression in triple negative breast cancer at Lagos, Nigeria. Ecancermedicalscience 2022; 16:1452. [PMID: 36405944 PMCID: PMC9666286 DOI: 10.3332/ecancer.2022.1452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Indexed: 11/26/2023] Open
Abstract
INTRODUCTION Androgen receptor (AR) is one of the predominant nuclear hormone receptors in invasive breast cancer and can be explored as a biomarker of response for targeted anti-androgen therapy, especially in the setting of triple negative breast cancer (TNBC). Luminal AR is a distinct subtype amongst TNBC cases following gene expression studies. TNBC is higher in Africans (23%-82%) and African-Americans (29.8%) compared to Caucasian (10%-15%) breast cancer patients; however, there is a paucity of data on AR expression in this population. The aim of this study is to determine the expression of AR and the proportion of AR positive cancers in TNBCs at the Lagos University Teaching Hospital, Lagos, Nigeria. METHODOLOGY Out of 99 reviewed cases, 78 formalin fixed, paraffin embedded TNBC cases were assembled into a tissue microarray, stained and analysed for AR expression using immunohistochemistry. RESULTS The mean age of the TNBC patients was 49.3 years (range: 20-80 years). The histologic types in this study were invasive carcinoma (no special type) 75.4%; metaplastic carcinoma 21.4%; lobular carcinoma and mucinous carcinoma 1.6% each. Of 61 TNBC cases analysed, 37.7% were AR positive and 62.3% were AR negative, making the latter to become quadruple negative breast cancers. There was a significant association between age and AR expression (p = 0.02). In the subjects that expressed AR positivity, patients below 50 years accounted for 34.8% (8 of 23) while 65.2% (15 of 23) were above 50 years. There was no significant association between AR expression and histologic type or tumour grade. CONCLUSION Over a third of this Nigerian TNBC cohort study is AR+. This warrants further exploration of the predictive and prognostic significance of its expression amongst TNBC and the potential for targeted therapy, specifically androgen antagonists to improve the outcome of this disease with limited therapeutic options.
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Affiliation(s)
- Muibat Haruna
- Lagos University Teaching Hospital, Lagos 100254, Nigeria
| | - Adetola Olubunmi Daramola
- Lagos University Teaching Hospital, Lagos 100254, Nigeria
- Department of Anatomic and Molecular Pathology, College of Medicine, University of Lagos, Lagos 101014, Nigeria
| | - Nicholas Awodele Awolola
- Lagos University Teaching Hospital, Lagos 100254, Nigeria
- Department of Anatomic and Molecular Pathology, College of Medicine, University of Lagos, Lagos 101014, Nigeria
| | - Nahla Mustafa Badr
- Department of Pathology, Faculty of Medicine, Menoufia University, Shebin Elkom 32511, Egypt
- Institute of Cancer Science and Genomics, University of Birmingham, Birmingham B15 2WB, UK
| | - Adekunbiola Aina Fehintola Banjo
- Lagos University Teaching Hospital, Lagos 100254, Nigeria
- Department of Anatomic and Molecular Pathology, College of Medicine, University of Lagos, Lagos 101014, Nigeria
| | - Abeer Shaaban
- Institute of Cancer Science and Genomics, University of Birmingham, Birmingham B15 2WB, UK
- Queen Elizabeth Hospital Birmingham and University of Birmingham, Birmingham B15 2WB, UK
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From Menopause to Neurodegeneration-Molecular Basis and Potential Therapy. Int J Mol Sci 2021; 22:ijms22168654. [PMID: 34445359 PMCID: PMC8395405 DOI: 10.3390/ijms22168654] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/09/2021] [Accepted: 08/09/2021] [Indexed: 12/12/2022] Open
Abstract
The impacts of menopause on neurodegenerative diseases, especially the changes in steroid hormones, have been well described in cell models, animal models, and humans. However, the therapeutic effects of hormone replacement therapy on postmenopausal women with neurodegenerative diseases remain controversial. The steroid hormones, steroid hormone receptors, and downstream signal pathways in the brain change with aging and contribute to disease progression. Estrogen and progesterone are two steroid hormones which decline in circulation and the brain during menopause. Insulin-like growth factor 1 (IGF-1), which plays an import role in neuroprotection, is rapidly decreased in serum after menopause. Here, we summarize the actions of estrogen, progesterone, and IGF-1 and their signaling pathways in the brain. Since the incidence of Alzheimer’s disease (AD) is higher in women than in men, the associations of steroid hormone changes and AD are emphasized. The signaling pathways and cellular mechanisms for how steroid hormones and IGF-1 provide neuroprotection are also addressed. Finally, the molecular mechanisms of potential estrogen modulation on N-methyl-d-aspartic acid receptors (NMDARs) are also addressed. We provide the viewpoint of why hormone therapy has inconclusive results based on signaling pathways considering their complex response to aging and hormone treatments. Nonetheless, while diagnosable AD may not be treatable by hormone therapy, its preceding stage of mild cognitive impairment may very well be treatable by hormone therapy.
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Campos-Múzquiz LG, Méndez-Olvera ET, Martínez MP, Martínez-Gómez D. Campylobacter fetus Induced Proinflammatory Response in Bovine Endometrial Epithelial Cells. Pol J Microbiol 2021; 70:99-106. [PMID: 33815531 PMCID: PMC8008763 DOI: 10.33073/pjm-2021-009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 11/24/2022] Open
Abstract
Campylobacter fetus subsp. fetus is the causal agent of sporadic abortion in bovines and infertility that produces economic losses in livestock. In many infectious diseases, the immune response has an important role in limiting the invasion and proliferation of bacterial pathogens. Innate immune sensing of microorganisms is mediated by pattern-recognition receptors (PRRs) that identify pathogen-associated molecular patterns (PAMPs) and induces the secretion of several proinflammatory cytokines, like IL-1β, TNF-α, and IL-8. In this study, the expression of IL-1β, TNF-α, IL-8, and IFN-γ in bovine endometrial epithelial cells infected with C. fetus and Salmonella Typhimurium (a bacterial invasion control) was analyzed. The results showed that expression levels of IL-1β and IL-8 were high at the beginning of the infection and decreased throughout the intracellular period. Unlike in this same assay, the expression levels of IFN-γ increased through time and reached the highest peak at 4 hours post infection. In cells infected with S. Typhimurium, the results showed that IL8 expression levels were highly induced by infection but not IFN-γ. In cells infected with S. Typhimurium or C. fetus subsp. fetus, the results showed that TNF-α expression did not show any change during infection. A cytoskeleton inhibition assay was performed to determine if cytokine expression was modified by C. fetus subsp. fetus intracellular invasion. IL-1β and IL-8 expression were downregulated when an intracellular invasion was avoided. The results obtained in this study suggest that bovine endometrial epithelial cells could recognize C. fetus subsp. fetus resulting in early proinflammatory response.
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Affiliation(s)
| | - Estela Teresita Méndez-Olvera
- Laboratorio de Biología Molecular, Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Xochimilco, México
| | - Monika Palacios Martínez
- Laboratorio de Biología Molecular, Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Xochimilco, México
| | - Daniel Martínez-Gómez
- Laboratorio de Microbiología Agropecuaria, Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Xochimilco, México
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12
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Abstract
Postpartum uterine diseases are common in dairy cows and are a great concern for the dairy industry as they are associated with various consequences, including lower fertility, lower milk yield, and an overall negative impact on the host health. An infected uterus is a source of bacterial compounds and cytokines that spill into the systemic circulation, spreading inflammation to other organs. In this review article, we discuss a short overview of the anatomy of the reproductive tract of dairy cows and several infectious diseases of the uterus including metritis, endometritis, and pyometra. Additionally, we discuss the microbiome of the reproductive tract in health and during uterine diseases. As well, diagnostic criteria for metritis and endometritis and contributing factors for increased susceptibility to metritis infection are important topics of this review. To better understand how the uterus and reproductive tract respond to bacterial pathogens, a section of this review is dedicated to immunity of the reproductive tract. Both the innate and adaptive immunity systems are also discussed. We conclude the review with a factual discussion about the current treatments of uterine diseases and the new developments in the area of application of probiotics for uterine health. Mechanisms of actions of probiotics are discussed in detail and also some applications to prevent uterine infections in dairy cows are discussed.
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13
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Olaniyan OT, Dare A, Okotie GE, Adetunji CO, Ibitoye BO, Eweoya O, Dare JB, Okoli BJ. Ovarian odorant-like biomolecules in promoting chemotaxis behavior of spermatozoa olfactory receptors during migration, maturation, and fertilization. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2021. [DOI: 10.1186/s43043-020-00049-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Abstract
Background
Studies have shown that olfactory receptor genes are the largest in the human genome, which are significantly expressed in olfactory and non-olfactory tissues such as the reproductive systems where they perform many important biological functions.
Main body
There is growing evidence that bioactive metabolites from the ovary, follicular fluid, and other parts of the female reproductive tract signal the sperm through a series of signal transduction cascades that regulate sperm migration, maturation, and fertilization processes. Several studies have highlighted the role of G-protein-coupled receptors in these cellular processes. Thus, we aimed to summarize the existing evidence describing the physiological role of most prominent exogenous and endogenous biomolecules found in the female reproductive organ in enhancing the chemotaxis behavior of spermatozoa during migration, maturation, and fertilization and also to elucidate the pathological implications of its dysfunctions and the clinical significance in human fertility.
Short conclusion
In the future, drugs and molecules can be designed to activate these receptors on sperm to facilitate fertility among infertile couples and use as contraceptives.
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14
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TRIM26 Facilitates HSV-2 Infection by Downregulating Antiviral Responses through the IRF3 Pathway. Viruses 2021; 13:v13010070. [PMID: 33419081 PMCID: PMC7825454 DOI: 10.3390/v13010070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/28/2020] [Accepted: 01/01/2021] [Indexed: 01/05/2023] Open
Abstract
Herpes simplex virus type 2 (HSV-2) is the primary cause of genital herpes which results in significant morbidity and mortality, especially in women, worldwide. HSV-2 is transmitted primarily through infection of epithelial cells at skin and mucosal surfaces. Our earlier work to examine interactions between HSV-2 and vaginal epithelial cells demonstrated that infection of the human vaginal epithelial cell line (VK2) with HSV-2 resulted in increased expression of TRIM26, a negative regulator of the Type I interferon pathway. Given that upregulation of TRIM26 could negatively affect anti-viral pathways, we decided to further study the role of TRIM26 in HSV-2 infection and replication. To do this, we designed and generated two cell lines derived from VK2s with TRIM26 overexpressed (OE) and knocked out (KO). Both, along with wildtype (WT) VK2, were infected with HSV-2 and viral titres were measured in supernatants 24 h later. Our results showed significantly enhanced virus production by TRIM26 OE cells, but very little replication in TRIM26 KO cells. We next examined interferon-β production and expression of two distinct interferon stimulated genes (ISGs), MX1 and ISG15, in all three cell lines, prior to and following HSV-2 infection. The absence of TRIM26 (KO) significantly upregulated interferon-β production at baseline and even further after HSV-2 infection. TRIM26 KO cells also showed significant increase in the expression of MX1 and ISG15 before and after HSV-2 infection. Immunofluorescent staining indicated that overexpression of TRIM26 substantially decreased the nuclear localization of IRF3, the primary mediator of ISG activation, before and after HSV-2 infection. Taken together, our data indicate that HSV-2 utilizes host factor TRIM26 to evade anti-viral response and thereby increase its replication in vaginal epithelial cells.
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15
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Vaginal Yeast Infection. CURRENT BLADDER DYSFUNCTION REPORTS 2020. [DOI: 10.1007/s11884-020-00606-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Protective Effect of Hydroxytyrosol on LPS-Induced Inflammation and Oxidative Stress in Bovine Endometrial Epithelial Cell Line. Vet Sci 2020; 7:vetsci7040161. [PMID: 33114084 PMCID: PMC7712648 DOI: 10.3390/vetsci7040161] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/13/2020] [Accepted: 10/22/2020] [Indexed: 12/13/2022] Open
Abstract
Bovine endometritis is a serious pathogen-induced infectious disease that affects the physiological processes of estrus, pregnancy and the postpartum condition. The inflamed endometrium responds by activating an inflammatory intracellular signaling cascade that leads to increased expression of proinflammatory cytokines and reactive oxygen species (ROS). Oxidative stress is closely related to several pathological conditions in perinatal dairy cows and play a key role in tissue damage. Hydroxytyrosol (HT), a natural phenolic alcohol with a strong antioxidant activity, displayed a wide range of biological effect. The aim of this study was to evaluate the protective effects of HT in an in vitro model of lipopolysaccharide (LPS)-induced inflammation in bovine uterine endometrial cells. Our results showed that HT had a significant protective effect in LPS-induced inflammation and oxidative stress. HT was also able to increase the capacity of endogenous antioxidant systems through the up-regulation of the NRF2 pathway. Furthermore, HT restored the tight junction protein expressions. In conclusion, our results showed the protective effects of HT in LPS-stimulated BEND cells. Therefore, the results of this study suggest an important protective role of HT in the treatment and prevention of uterine pathologies in dairy cows.
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17
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Impaired pathogen-induced autophagy and increased IL-1β and TNFα release in response to pathogenic triggers in secretory phase endometrial stromal cells of endometriosis patients. Reprod Biomed Online 2020; 41:767-781. [PMID: 32978075 DOI: 10.1016/j.rbmo.2020.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/25/2020] [Accepted: 06/17/2020] [Indexed: 11/20/2022]
Abstract
RESEARCH QUESTION It is not clear whether innate immunity along with autophagy is altered in endometrial cells of patients with endometriosis. DESIGN This study evaluated the effects of lipopolysaccharide (LPS) or polyinosinic:polycytidylic acid (poly I:C) stimulation on autophagy induction, pro-IL-1β expression, and secretion of interleukin-1β (IL-1β) and tumour necrosis factor-α (TNFα) in endometrial epithelial and/or stromal cells of patients with endometriosis (EE-endo, ES-endo, respectively), those of patients with hydrosalpinx (EE-hydro, ES-hydro, respectively) and those of healthy fertile women (EE-healthy, ES-healthy, respectively), with and without inhibition of autophagy by autophagy-related (ATG)13 gene small interfering RNA (siRNA). RESULTS Stimulation with either LPS or poly I:C triggered autophagy in EE/ES-healthy, whereas no significant induction was observed in either EE/ES-endo or EE/ES-hydro. In EE- and/or ES-healthy, IL-1β and/or TNFα secretion after stimulation with LPS or poly I:C was significantly higher in cells with ATG13 knockdown compared with those with siRNA control (P < 0.03), whereas no significant difference was observed in either EE/ES-endo or EE/ES-hydro. In the secretory phase ES-endo without autophagy inhibition, IL-1β and TNFα secretion were significantly higher compared with those of ES-healthy after stimulation with either LPS or poly I:C for 4 h (P < 0.001) and for 24 h (P < 0.01). CONCLUSION Pathogen-induced autophagy was impaired in EE/ES-endo. Increased IL-1β and TNFα release in response to pathogenic triggers in the secretory phase ES-endo may result in the development of an inflammatory uterine microenvironment detrimental to successful embryo implantation.
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18
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Rosca AS, Castro J, Sousa LGV, Cerca N. Gardnerella and vaginal health: the truth is out there. FEMS Microbiol Rev 2020; 44:73-105. [PMID: 31697363 DOI: 10.1093/femsre/fuz027] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/06/2019] [Indexed: 12/16/2022] Open
Abstract
The human vagina is a dynamic ecosystem in which homeostasis depends on mutually beneficial interactions between the host and their microorganisms. However, the vaginal ecosystem can be thrown off balance by a wide variety of factors. Bacterial vaginosis (BV) is the most common vaginal infection in women of childbearing age but its etiology is not yet fully understood, with different controversial theories being raised over the years. What is generally accepted is that BV is often characterized by a shift in the composition of the normal vaginal microbiota, from a Lactobacillus species dominated microbiota to a mixture of anaerobic and facultative anaerobic bacteria. During BV, a polymicrobial biofilm develops in the vaginal microenvironment, being mainly composed of Gardnerella species. The interactions between vaginal microorganisms are thought to play a pivotal role in the shift from health to disease and might also increase the risk of sexually transmitted infections acquisition. Here, we review the current knowledge regarding the specific interactions that occur in the vaginal niche and discuss mechanisms by which these interactions might be mediated. Furthermore, we discuss the importance of novel strategies to fight chronic vaginal infections.
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Affiliation(s)
- Aliona S Rosca
- Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Joana Castro
- Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Lúcia G V Sousa
- Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Nuno Cerca
- Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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19
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Happel AU, Varsani A, Balle C, Passmore JA, Jaspan H. The Vaginal Virome-Balancing Female Genital Tract Bacteriome, Mucosal Immunity, and Sexual and Reproductive Health Outcomes? Viruses 2020; 12:E832. [PMID: 32751611 PMCID: PMC7472209 DOI: 10.3390/v12080832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/12/2022] Open
Abstract
Besides bacteria, fungi, protists and archaea, the vaginal ecosystem also contains a range of prokaryote- and eukaryote-infecting viruses, which are collectively referred to as the "virome". Despite its well-described role in the gut and other environmental niches, the vaginal virome remains understudied. With a focus on sexual and reproductive health, we summarize the currently known components of the vaginal virome, its relationship with other constituents of the vaginal microbiota and its association with adverse health outcomes. While a range of eukaryote-infecting viruses has been described to be present in the female genital tract (FGT), few prokaryote-infecting viruses have been described. Literature suggests that various vaginal viruses interact with vaginal bacterial microbiota and host immunity and that any imbalance thereof may contribute to the risk of adverse reproductive health outcomes, including infertility and adverse birth outcomes. Current limitations of vaginal virome research include experimental and analytical constraints. Considering the vaginal virome may represent the missing link in our understanding of the relationship between FGT bacteria, mucosal immunity, and adverse sexual and reproductive health outcomes, future studies evaluating the vaginal microbiome and its population dynamics holistically will be important for understanding the role of the vaginal virome in balancing health and disease.
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Affiliation(s)
- Anna-Ursula Happel
- Department of Pathology, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Anzio Road, Observatory, Cape Town 7925, South Africa; (C.B.); (J.-A.P.); (H.J.)
| | - Arvind Varsani
- The Biodesign Center of Fundamental and Applied Microbiomics, School of Life Sciences, Center for Evolution and Medicine, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287-5001, USA;
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Anzio Road, Observatory, Cape Town 7925, South Africa
| | - Christina Balle
- Department of Pathology, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Anzio Road, Observatory, Cape Town 7925, South Africa; (C.B.); (J.-A.P.); (H.J.)
| | - Jo-Ann Passmore
- Department of Pathology, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Anzio Road, Observatory, Cape Town 7925, South Africa; (C.B.); (J.-A.P.); (H.J.)
- NRF-DST CAPRISA Centre of Excellence in HIV Prevention, 719 Umbilo Road, Congella, Durban 4013, South Africa
- National Health Laboratory Service, Anzio Road, Observatory, Cape Town 7925, South Africa
| | - Heather Jaspan
- Department of Pathology, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Anzio Road, Observatory, Cape Town 7925, South Africa; (C.B.); (J.-A.P.); (H.J.)
- Department of Pediatrics and Global Health, University of Washington, 1510 San Juan Road NE, Seattle, WA 98195, USA
- Seattle Children’s Research Institute, 307 Westlake Ave N, Seattle, WA 98109, USA
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20
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Evolving cervical imaging technologies to predict preterm birth. Semin Immunopathol 2020; 42:385-396. [PMID: 32524180 DOI: 10.1007/s00281-020-00800-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 05/18/2020] [Indexed: 12/18/2022]
Abstract
Preterm birth, defined as delivery at less than 37 weeks' gestation, increases maternal-fetal morbidity and mortality and places heavy financial and emotional burdens on families and society. Although premature cervical remodeling is a major factor in many preterm deliveries, how and why this occurs is poorly understood. This review describes existing and emerging imaging techniques and their advantages and disadvantages in assessing cervical remodeling. Brightness mode (B-mode) ultrasound is used to measure the cervical length, currently the gold standard for determining risk of preterm birth. Several new B-mode ultrasound techniques are being developed, including measuring attenuation, cervical gland area, and the cervical consistency index. Shear wave speed can differentiate between soft (ripe) and firm (unripe) cervices by measuring the speed of ultrasound through a tissue. Elastography provides qualitative information regarding cervical stiffness by compressing the tissue with the ultrasound probe. Raman spectroscopy uses a fiber optic probe to assess the biochemical composition of the cervix throughout pregnancy. Second harmonic generation microscopy uses light to quantify changes in collagen fiber structure and size during cervical maturation. Finally, photoacoustic endoscopy records light-induced sound to determine optical characteristics of cervical tissue. In the long term, a combination of several imaging approaches, combined with consideration of clinical epidemiologic characteristics, will likely be required to accurately predict preterm birth.
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21
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Pauletto M, Cattelan S, Pilastro A, Babbucci M, Bargelloni L, Gasparini C. Molecular insights into post-mating immune response in a fish with internal fertilization. J Evol Biol 2020; 33:751-761. [PMID: 32150779 DOI: 10.1111/jeb.13614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/24/2020] [Accepted: 02/26/2020] [Indexed: 12/11/2022]
Abstract
The tight connection between immunity and reproduction has been studied for decades. However, basic knowledge at the molecular level of the effect of mating on immune function is still lacking in many taxa. Determining whether and how the immune system is engaged after mating is a crucial step in understanding post-mating mechanisms of reproduction and sexual selection. Here, we study the transcriptional changes in immunity-related genes caused by the ejaculate in the female reproductive tract using a model species for sexual selection studies, the guppy Poecilia reticulata. To study changes triggered by the ejaculate only, rather than caused by mating, we used artificial inseminations to transfer ejaculate into females. We then compared gene expression in the reproductive tract (gonoduct and ovary) of females artificially inseminated either with ejaculate or with a control solution, after 1 hr and after 6 hr. Overall, contact with ejaculate caused short-term changes in the expression of immune-related genes in the female reproductive tract, with a complex pattern of up- and down-regulation of immune-related pathways, but with clear indication of a marked down-regulation of the immune system shortly after ejaculate contact. This suggests a link between immune function and processes occurring between mating and fertilization in this species.
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Affiliation(s)
- Marianna Pauletto
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, Italy
| | | | | | - Massimiliano Babbucci
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, Italy
| | - Luca Bargelloni
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, Italy
| | - Clelia Gasparini
- Department of Biology, University of Padova, Padova, Italy.,Centre for Evolutionary Biology, School of Biological Sciences, University of Western Australia, Crawley, WA, Australia
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22
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Gardner JK, Swaims-Kohlmeier A, Herbst-Kralovetz MM. IL-36γ Is a Key Regulator of Neutrophil Infiltration in the Vaginal Microenvironment and Limits Neuroinvasion in Genital HSV-2 Infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2019; 203:2655-2664. [PMID: 31578266 PMCID: PMC9978960 DOI: 10.4049/jimmunol.1900280] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 09/06/2019] [Indexed: 01/01/2023]
Abstract
HSV-2 is a neurotropic virus that causes a persistent, lifelong infection that increases risk for other sexually transmitted infections. The vaginal epithelium is the first line of defense against HSV-2 and coordinates the immune response through the secretion of immune mediators, including the proinflammatory cytokine IL-36γ. Previously, we showed that IL-36γ treatment promoted transient polymorphonuclear cell infiltration to the vaginal cavity and protected against lethal HSV-2 challenge. In this report, we reveal that IL-36γ specifically induces transient neutrophil infiltration but does not impact monocyte and macrophage recruitment. Using IL-36γ-/- mice in a lethal HSV-2 challenge model, we show that neutrophil counts are significantly reduced at 1 and 2 d postinfection and that KC-mediated mature neutrophil recruitment is impaired in IL-36γ-/- mice. Additionally, IL-36γ-/- mice develop genital disease more rapidly, have significantly reduced survival time, and exhibit an increased incidence of hind limb paralysis that is linked to productive HSV-2 infection in the brain stem. IL-36γ-/- mice also exhibit a significant delay in clearance of the virus from the vaginal epithelium and a more rapid spread of HSV-2 to the spinal cord, bladder, and colon. We further show that the decreased survival time and increased virus spread observed in IL-36γ-/- mice are not neutrophil-dependent, suggesting that IL-36γ may function to limit HSV-2 spread in the nervous system. Ultimately, we demonstrate that IL-36γ is a key regulator of neutrophil recruitment in the vaginal microenvironment and may function to limit HSV-2 neuroinvasion.
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Affiliation(s)
- Jameson K. Gardner
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA,Molecular and Cellular Biology Graduate Program, School of Life Sciences, Arizona State University, Tempe, Arizona, USA
| | - Alison Swaims-Kohlmeier
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Melissa M. Herbst-Kralovetz
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA,Department of Obstetrics and Gynecology, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
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23
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Kazakova AV, Uvarova EV, Limareva LV, Trupakova AA, Mishina AI. Prediction of bacterial vulvovaginitis in girls at different Tanner stages of sexual development. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2019. [DOI: 10.24075/brsmu.2019.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
At present, there is a paucity of research studies that comprehensively investigate the factors causing vulvovaginitis in young females. The aim of this work was to propose an algorithm for predicting the risk of vulvovaginitis in young girls and adolescents. The study recruited 252 healthy girls, who were stratified into a few groups depending on their sexual development on the Tanner scale. The composition of vaginal microbiota was determined in all the participants using real-time polymerase chain reaction (PCR); distribution of allele and genotype frequencies was assessed for the polymorphic variants of genes coding for pro- and anti-inflammatory cytokines. Based on the obtained data, we created a functional model for predicting the risk of vulvovaginitis in girls at different stages of sexual development. Favorable risk factors for Tanner I girls included predominance of obligate anaerobes in vaginal microbiota and the polymorphic IL10 variant (C-819T) homozygous for TT. The sensitivity of the model was 80%, its specificity was 78%. Favorable risk factors for prepubertal and pubertal girls included predominance of aerobes in the composition of vaginal microbiota and the presence of the TT allele in the polymorphic IL10 gene variant (C-3953T). The sensitivity of the model was 58.3%, whereas specificity, 94.1%. This study provides the rationale conforming with the principles of evidence-based medicine for using prevention measures in the groups at risk for vulvovaginitis at young age. The proposed measures allowed us to reduce the relapse rate of bacterial vulvovaginitis threefold.
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Affiliation(s)
- AV Kazakova
- Samara State Medical University, Samara, Russia
| | - EV Uvarova
- Kulakov Federal Research Center for Obstetrics, Gynecology, and Perinatolоgy, Moscow, Russia
| | - LV Limareva
- Samara State Medical University, Samara, Russia
| | | | - AI Mishina
- Samara State Medical University, Samara, Russia
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24
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Jena MK, Nayak N, Chen K, Nayak NR. Role of Macrophages in Pregnancy and Related Complications. Arch Immunol Ther Exp (Warsz) 2019; 67:295-309. [PMID: 31286151 PMCID: PMC7140981 DOI: 10.1007/s00005-019-00552-7] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 06/28/2019] [Indexed: 12/20/2022]
Abstract
Macrophages (MФs) are the leukocytes produced from differentiation of monocytes and are located in almost all tissues of human body. They are involved in various processes, such as phagocytosis, innate and adaptive immunity, proinflammatory (M1) and anti-inflammatory (M2) activity, depending on the tissue microenvironment. They play a crucial role in pregnancy, and their dysfunction or alteration of polarity is involved in pregnancy disorders, like preeclampsia, recurrent spontaneous abortion, infertility, intrauterine growth restriction, and preterm labor. About 50-60% of decidual leukocytes are natural killer (NK) cells followed by MФs (the second largest population). MФs are actively involved in trophoblast invasion, tissue and vascular remodeling during early pregnancy, besides their role as major antigen-presenting cells in the decidua. These cells have different phenotypes and polarities in different stages of pregnancy. They have also been observed to enhance tumor growth by their anti-inflammatory activity (M2 type) and prevent immunogenic rejection. Targeted alteration of polarity (M1-M2 or vice versa) could be a major focus in the future treatment of pregnancy complications. This review is focused on the role of MФs in pregnancy, their involvement in pregnancy disorders, and decidual MФs as possible therapeutic targets for the treatment of pregnancy complications.
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Affiliation(s)
- Manoj K Jena
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA.
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University (LPU), Phagwara, Punjab, India.
| | - Neha Nayak
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
| | - Kang Chen
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
| | - Nihar R Nayak
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
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25
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Pekmezovic M, Mogavero S, Naglik JR, Hube B. Host-Pathogen Interactions during Female Genital Tract Infections. Trends Microbiol 2019; 27:982-996. [PMID: 31451347 DOI: 10.1016/j.tim.2019.07.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/25/2019] [Accepted: 07/22/2019] [Indexed: 12/11/2022]
Abstract
Dysbiosis in the female genital tract (FGT) is characterized by the overgrowth of pathogenic bacterial, fungal, or protozoan members of the microbiota, leading to symptomatic or asymptomatic infections. In this review, we discuss recent advances in studies dealing with molecular mechanisms of pathogenicity factors of Gardnerella vaginalis, Mycoplasma genitalium, Mycoplasma hominis, Neisseria gonorrhoeae, Streptococcus agalactiae, Chlamydia trachomatis, Trichomonas vaginalis, and Candida spp., as well as their interactions with the host and microbiota in the various niches of the FGT. Taking a holistic approach to identifying fundamental commonalities and differences during these infections could help us to better understand reproductive tract health and improve current prevention and treatment strategies.
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Affiliation(s)
- Marina Pekmezovic
- Department of Microbial Pathogenicity Mechanisms, Hans Knoell Institute, Jena, Germany
| | - Selene Mogavero
- Department of Microbial Pathogenicity Mechanisms, Hans Knoell Institute, Jena, Germany
| | - Julian R Naglik
- Centre for Host-Microbiome Interactions, Faculty of Dental, Oral, and Craniofacial Sciences, King's College London, SE1 1UL, UK
| | - Bernhard Hube
- Department of Microbial Pathogenicity Mechanisms, Hans Knoell Institute, Jena, Germany; Institute of Microbiology, Friedrich Schiller University, Jena, Germany. @leibniz-hki.de
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26
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Swaims-Kohlmeier A, Haddad LB, Li ZRT, Brookmeyer KA, Baker JM, Widom CS, Lamousin JC, Chi KH, Chen CY, Kersh EN, Johnson JA, Herbst-Kralovetz MM, Hogben M, Ofotokun I, Kohlmeier JE. Chronic immune barrier dysregulation among women with a history of violence victimization. JCI Insight 2019; 4:126097. [PMID: 31092736 DOI: 10.1172/jci.insight.126097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 04/11/2019] [Indexed: 11/17/2022] Open
Abstract
We explored the association between violence victimization and increased risk for acquiring sexually transmitted infections (STIs) in women by measuring cellular immune barrier properties from the female reproductive tract. STI-negative participants reporting repeated prior victimization occurrences through the lifetime trauma and victimization history (LTVH) instrument were more likely to exhibit alterations in barrier homeostasis and the composition of critical immune mediators irrespective of demographic parameters or presence of bacterial vaginosis. By combining cellular data with mixed-effect linear modeling, we uncovered differences in local T cells, MHCII+ antigen-presenting cells, and epithelial cells indicative of altered trafficking behavior, increased immunosuppressive function, and decreased barrier integrity at sites of STI exposure that correlate most strongly with LTVH score. These data evidence a biological link between a history of violence victimization and risk of STI acquisition through immune dysregulation in the female reproductive tract.
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Affiliation(s)
- Alison Swaims-Kohlmeier
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Zheng-Rong Tiger Li
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Kathryn A Brookmeyer
- Social and Behavioral Research and Evaluation Branch, Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - James M Baker
- Department of Basic Medical Sciences, Department of Obstetrics and Gynecology, The University of Arizona College of Medicine, Phoenix, Arizona, USA
| | - Cathy Spatz Widom
- Psychology Department, John Jay College of Criminal Justice, and Graduate Center, City University of New York, New York, New York, USA
| | - James C Lamousin
- Department of Mental Health, South Mississippi State Hospital, and Choices PLLC, Purvis, Mississippi, USA
| | - Kai-Hua Chi
- Laboratory Branch, Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Cheng Y Chen
- Laboratory Branch, Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Ellen N Kersh
- Laboratory Branch, Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Jeffrey A Johnson
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Melissa M Herbst-Kralovetz
- Department of Basic Medical Sciences, Department of Obstetrics and Gynecology, The University of Arizona College of Medicine, Phoenix, Arizona, USA
| | - Matthew Hogben
- Social and Behavioral Research and Evaluation Branch, Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Igho Ofotokun
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jacob E Kohlmeier
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA
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27
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Abstract
The moment of the fertilization of an egg by a spermatozoon-the point of "sperm success"-is a key milestone in the biology of sexually reproducing species and is a fundamental requirement for offspring production. Fertilization also represents the culmination of a suite of sexually selected processes in both sexes and is commonly used as a landmark to measure reproductive success. Sperm success is heavily dependent upon interactions with other key aspects of male and female biology, with the immune system among the most important. The immune system is vital to maintaining health in both sexes; however, immune reactions can also have antagonistic effects on sperm success. The effects of immunity on sperm success are diverse, and may include trade-offs in the male between investment in the production or protection of sperm, as well as more direct, hostile, immune responses to sperm within the female, and potentially the male, reproductive tract. Here, we review current understanding of where the biology of immunity and sperm meet, and identify the gaps in our knowledge.
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Affiliation(s)
- Stuart Wigby
- Edward Grey Institute, Department of Zoology, University of Oxford, Oxford, United Kingdom.
| | - Susan S Suarez
- Departments of Biomedical Sciences (SSS), Entomology (BPL), and Molecular Biology and Genetics (MFW), Cornell University, Ithaca, NY, United States
| | - Brian P Lazzaro
- Departments of Biomedical Sciences (SSS), Entomology (BPL), and Molecular Biology and Genetics (MFW), Cornell University, Ithaca, NY, United States
| | - Tommaso Pizzari
- Edward Grey Institute, Department of Zoology, University of Oxford, Oxford, United Kingdom
| | - Mariana F Wolfner
- Departments of Biomedical Sciences (SSS), Entomology (BPL), and Molecular Biology and Genetics (MFW), Cornell University, Ithaca, NY, United States
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28
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Martín-Moreno A, Sepúlveda-Crespo D, Serramía-Lobera MJ, Perisé-Barrios AJ, Muñoz-Fernández MA. G2-S16 dendrimer microbicide does not interfere with the vaginal immune system. J Nanobiotechnology 2019; 17:65. [PMID: 31092246 PMCID: PMC6518660 DOI: 10.1186/s12951-019-0496-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/04/2019] [Indexed: 12/19/2022] Open
Abstract
It is essential that prophylactic drugs do not interfere with the normal function of the immune system. The use of nanoparticles as vaginal microbicides is a promising prevention strategy against sexually transmitted infections. With that aim, our group is working with the G2-S16, a second generation carbosilane dendrimer with sulfonate groups in the periphery, which has been previously shown to be effective against HIV-1 and HSV-2 infection, and it is now on the road to clinical trials. Our objective in this new study is to assess the effects of G2-S16 on the immune barrier of the female reproductive tract. The expression of differentiation, maturation and activation markers was measured in epithelial cells, dendritic cells, M and GM macrophages, and T cells using RT-qPCR and flow cytometry. The results demonstrate that G2-S16 does not alter the natural immunity of the vagina, strongly supporting the biosafety of this dendrimer for clinical use.![]()
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Affiliation(s)
- Alba Martín-Moreno
- Sección Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), and Spanish HIV-HGM BioBank, Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Daniel Sepúlveda-Crespo
- Sección Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), and Spanish HIV-HGM BioBank, Madrid, Spain
| | - Mª Jesús Serramía-Lobera
- Sección Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), and Spanish HIV-HGM BioBank, Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Ana Judith Perisé-Barrios
- Sección Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), and Spanish HIV-HGM BioBank, Madrid, Spain
| | - Mª Angeles Muñoz-Fernández
- Sección Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), and Spanish HIV-HGM BioBank, Madrid, Spain. .,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain.
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29
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Pisano S, Giustiniani M, Francis L, Gonzalez D, Margarit L, Sheldon IM, Paolino D, Fresta M, Conlan RS, Healey GD. Liquid crystal delivery of ciprofloxacin to treat infections of the female reproductive tract. Biomed Microdevices 2019; 21:36. [PMID: 30923927 PMCID: PMC6439215 DOI: 10.1007/s10544-019-0385-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Infections of the female reproductive tract are a major cause of morbidity and mortality in humans, requiring significant investment to sustain treatment and representing a major challenge to health. The increasing prevalence of bacterial resistance, and an almost complete absence of new antibiotic therapies for the past five decades, mean there is a desperate need for novel approaches to the treatment of bacterial infections. Within the present study, we demonstrate the effective ex vivo treatment of bacterial infection of the female reproductive tract using a controlled-release, liquid crystal-based platform. Liquid crystal encapsulation of ciprofloxacin significantly enhanced its bactericidal efficacy and reduced cell toxicity. Liquid crystal structures are low-cost, simple to manufacture and provide a sustained-release profile of encapsulated ciprofloxacin. Treatment of Escherichia coli infected reproductive tract epithelial cells and whole organ cultures with liquid crystal encapsulated ciprofloxacin proved to be an effective strategy for reducing bacterial load and reproductive tract inflammatory responses to infection. These data suggest that such an approach could provide an efficacious treatment modality for enhancing the effectiveness of current antibiotic therapies.
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Affiliation(s)
- Simone Pisano
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Matteo Giustiniani
- Department of Clinical and Experimental Medicine, University of Catanzaro "Magna Graecia", Viale "S. Venuta", 88100, Catanzaro, Italy
- Inter-Regional Research Center for Food Safety & Health, University of Catanzaro "Magna Græcia", Viale "S. Venuta", 88100, Catanzaro, Italy
| | - Lewis Francis
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Deyarina Gonzalez
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Lavinia Margarit
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
- Obstetrics & Gynecology Department Princess of Wales Hospital, Abertawe Bro Morannwg University Health Board, Coity Road, Bridgend, CF31 1RQ, UK
| | - I Martin Sheldon
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Donatella Paolino
- Department of Clinical and Experimental Medicine, University of Catanzaro "Magna Graecia", Viale "S. Venuta", 88100, Catanzaro, Italy
- Inter-Regional Research Center for Food Safety & Health, University of Catanzaro "Magna Græcia", Viale "S. Venuta", 88100, Catanzaro, Italy
| | - Massimo Fresta
- Department of Clinical and Experimental Medicine, University of Catanzaro "Magna Graecia", Viale "S. Venuta", 88100, Catanzaro, Italy
- Inter-Regional Research Center for Food Safety & Health, University of Catanzaro "Magna Græcia", Viale "S. Venuta", 88100, Catanzaro, Italy
| | - R Steven Conlan
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Gareth D Healey
- Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK.
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30
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Calevo MG, Veronese N, Cavallin F, Paola C, Micaglio M, Trevisanuto D. Supraglottic airway devices for surfactant treatment: systematic review and meta-analysis. J Perinatol 2019; 39:173-183. [PMID: 30518796 DOI: 10.1038/s41372-018-0281-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/26/2018] [Accepted: 10/24/2018] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To compare surfactant administration via supraglottic airway device (SAD) vs. nasal CPAP alone or INSURE. STUDY DESIGN A systematic search of PubMed, EMBASE, SCOPUS, Cochrane Central Register of Controlled Trials and Clinicaltrials.gov was performed. Articles meeting inclusion criteria (RCT, surfactant administration via SAD, laryngeal mask, I-gel) were assessed RESULTS: Five RCTs were eligible. Surfactant administration via SAD reduced the need for intubation/mechanical ventilation (RR 0.57, 95%CI 0.38-0.85) and short-term oxygen requirements (MD -8.00, 95%CI -11.09 to -4.91) compared to nCPAP alone. Surfactant administration via SAD reduced the need for intubation/mechanical ventilation (RR 0.43, 95%CI 0.31-0.61), but increased short-term oxygen requirements (MD 3.10, 95%CI 0.51-5.69) compared to INSURE approach. CONCLUSIONS In preterm infants with RDS, surfactant administration via SAD reduces the need for intubation/mechanical ventilation. Overall, available literature includes few, small, poor-quality studies. Surfactant administration via SAD should be limited to clinical trials.
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Affiliation(s)
- Maria Grazia Calevo
- Epidemiology, Biostatistics and Committees Unit, Istituto Giannina Gaslini, Genoa, Italy
| | - Nicola Veronese
- National Research Council, Neuroscience Institute, Aging Branch, Padua, Italy
| | | | | | - Massimo Micaglio
- Department of Anesthesia and Intensive Care, Careggi University Hospital, Florence, Italy
| | - Daniele Trevisanuto
- Department of Woman's and Child's Health, University of Padova, Padova, Italy.
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31
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Castro J, Jefferson KK, Cerca N. Innate immune components affect growth and virulence traits of bacterial-vaginosis-associated and non-bacterial-vaginosis-associated Gardnerella vaginalis strains similarly. Pathog Dis 2018; 76:5289865. [PMID: 30649289 DOI: 10.1093/femspd/fty089] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/14/2018] [Indexed: 12/27/2022] Open
Abstract
Mucosal surfaces of the female reproductive tract contain a variety of antimicrobial components that provide the first line of defense against bacteria involved in the development of bacterial vaginosis (BV). Microbiological analysis of BV has shown Gardnerella vaginalis to be a prominent species in BV development. However, G. vaginalis colonization does not always lead to BV. Over the last decade, phenotypic and genotypic studies have demonstrated the existence of strain variants. Therefore, this study aimed to investigate if the major components of the vaginal immune response, specifically lysozyme, lactoferrin and β-defensin 2, differently affected virulence traits of G. vaginalis strains isolated from healthy women or from women with BV. Gardnerella vaginalis strains were first genotyped by the clade classification system and then phenotypically characterized. Our results revealed that key differences in initial adhesion existed among the isolates but that these differences could not be predicted using the clade-genotyping approach. Importantly, we found that growth, initial adhesion and biofilm formation were strongly affected by lysozymes, but at similar levels in both groups, suggesting that the response to host immune components is not a distinguishing characteristic of isolates from women with BV versus those from healthy women.
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Affiliation(s)
- Joana Castro
- Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Kimberly K Jefferson
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298-0678, USA
| | - Nuno Cerca
- Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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32
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Yousefi-Avarvand A, Vaez H, Tafaghodi M, Sahebkar AH, Arzanlou M, Khademi F. Antibiotic Resistance of Helicobacter pylori in Iranian Children: A Systematic Review and Meta-Analysis. Microb Drug Resist 2018; 24:980-986. [PMID: 29227738 DOI: 10.1089/mdr.2017.0292] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Antibiotic therapy for children infected with Helicobacter pylori is important. However, resistance to antibiotics is one of the main causes of treatment failure. This study was designed to evaluate the prevalence pattern of antibiotic resistance of H. pylori in Iranian children using a systematic review and meta-analysis of literature. A computerized search (until June 10, 2017) using related keywords in the national and international databases was performed. A total of 261 original articles on antibiotic resistance of H. pylori in Iranian children were collected. After screening for inclusion and exclusion criteria, six eligible articles were included in the meta-analysis. Resistance rates of H. pylori to different antibiotics were as follows: metronidazole: 71%, clarithromycin: 12.2%, amoxicillin: 20.4%, tetracycline: 8.4%, ampicillin: 21.4%, rifampin: 28.6%, furazolidone: 8.4%, ciprofloxacin: 16.2%, azithromycin: 19%, erythromycin: 15.3%, and nitrofurantoin: 0%. The prevalence of H. pylori resistance to metronidazole, amoxicillin, ampicillin, and rifampin among Iranian children was high. Therefore, a careful monitoring of antibiotic resistance to select the best treatment options and prevent treatment failure is required. Although resistance to some antibiotics such as clarithromycin, tetracycline, furazolidone, and ciprofloxacin was less prevalent, frequent consumption of these drugs in children should be controlled owing to their known adverse events.
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Affiliation(s)
- Arshid Yousefi-Avarvand
- 1 Department of Medical Bacteriology and Virology, School of Medicine, Mashhad University of Medical Sciences , Mashhad, Iran
| | - Hamid Vaez
- 2 Department of Microbiology, School of Medicine, Zabol University of Medical Sciences , Zabol, Iran
| | - Mohsen Tafaghodi
- 3 Nanotechnology Research Center, Mashhad University of Medical Sciences , Mashhad, Iran
| | - Amir Hossein Sahebkar
- 4 Biotechnology Research Center, School of Medicine, Mashhad University of Medical Sciences , Mashhad, Iran
| | - Mohsen Arzanlou
- 5 Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences , Ardabil, Iran
| | - Farzad Khademi
- 5 Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences , Ardabil, Iran
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33
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Estrogen Action in the Epithelial Cells of the Mouse Vagina Regulates Neutrophil Infiltration and Vaginal Tissue Integrity. Sci Rep 2018; 8:11247. [PMID: 30050124 PMCID: PMC6062573 DOI: 10.1038/s41598-018-29423-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 07/11/2018] [Indexed: 12/14/2022] Open
Abstract
In the female reproductive tract, the innate immune system is modulated by two sex steroid hormones, estrogen and progesterone. A cyclical wave of neutrophils in the vaginal lumen is triggered by chemokines and correlates with circulating estrogen levels. Classical estrogen signaling in the female reproductive tract is activated through estrogen receptor α (encoded by the Esr1 gene). To study the role of estrogen action in the vagina, we used a mouse model in which Esr1 was conditionally ablated from the epithelial cells (Wnt7acre/+; Esr1f/f). Histological evidence showed that in response to a physical stress, the lack of ESR1 caused the vaginal epithelium to deteriorate due to the absence of a protective cornified layer and a reduction in keratin production. In the absence of ESR1 in the vaginal epithelial tissue, we also observed an excess of neutrophil infiltration, regardless of the estrous cycle stage. The histological presence of neutrophils was found to correlate with persistent enzymatic activity in the cervical-vaginal fluid. Together, these findings suggest that ESR1 activity in the vaginal epithelial cells is required to maintain proper structural integrity of the vagina and immune response, both of which are necessary for protecting the vagina against physical damage and resetting the vaginal environment.
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34
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Krakowski L, Bartoszek P, Krakowska I, Stachurska A, Piech T, Brodzki P, Wrona Z. Changes in Blood Lymphocyte Subpopulations and Expression of MHC-II Molecules in Wild Mares Before and After Parturition. J Vet Res 2018; 61:217-221. [PMID: 29978076 PMCID: PMC5894386 DOI: 10.1515/jvetres-2017-0028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/10/2017] [Indexed: 11/29/2022] Open
Abstract
Introduction Pregnancy is a physiological state in which the immune system undergoes certain changes. On the one hand, by depleting cell defence mechanisms, it favours development and maintenance of the pregnancy. At the same time cells of the immune system ensure resistance to many risk factors, including infectious agents. Material and Methods The study was carried out on 24 Polish Konik breed mares which were divided into two equal groups. The first group (group I) included mares living in the reserve. The second group (group II) comprised mares maintained under conventional conditions in the stables. The blood samples were collected for the first time in the perinatal period, i.e. 2 weeks before parturition (trial 0), then within the first 24 h after delivery, and then on 7th and 21st day after foaling. Flow cytometric analysis of lymphocyte expressing TCD4+, TCD8+, CD2+, and MHC class II antigens was performed. Results Before the delivery, in group I there was a significantly higher CD4:CD8 ratio compared to group II (P ≤ 0.05). Similarly, significantly increased CD4:CD8 ratio in group I was noted within 24 h after parturition (P ≤ 0.001) and it was also observed on 7th day (P ≤ 0.03) and 21st day after foaling (P ≤ 0.02). In the first 24 h after parturition, a significant decline of lymphocytes CD8+ (P ≤ 0.02) was noted. No significant differences in terms of lymphocytes CD2+ and CD3+ were observed. Expression of MHC-II molecules before and after the parturition was higher in group I compared to group II; however, the difference between the groups was not significant. Conclusion The results obtained indicate that mares living in the reserve display higher activity of cell defence mechanisms.
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Affiliation(s)
- Leszek Krakowski
- Department of Andrology and Biotechnology of Reproduction, Chair of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20-612 Lublin, Poland
| | - Przemysław Bartoszek
- Department of Andrology and Biotechnology of Reproduction, Chair of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20-612 Lublin, Poland
| | - Izabela Krakowska
- University Center of Veterinary Medicine, Agricultural University of Cracow, 30-059 Cracow, Poland
| | - Anna Stachurska
- Faculty of Biology and Animal Breeding, University of Life Sciences in Lublin, 20-950 Lublin Poland
| | - Tomasz Piech
- Department of Andrology and Biotechnology of Reproduction, Chair of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20-612 Lublin, Poland
| | - Piotr Brodzki
- Department of Andrology and Biotechnology of Reproduction, Chair of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20-612 Lublin, Poland
| | - Zygmunt Wrona
- Department of Andrology and Biotechnology of Reproduction, Chair of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20-612 Lublin, Poland
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35
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Ragland SA, Humbert MV, Christodoulides M, Criss AK. Neisseria gonorrhoeae employs two protein inhibitors to evade killing by human lysozyme. PLoS Pathog 2018; 14:e1007080. [PMID: 29975775 PMCID: PMC6033460 DOI: 10.1371/journal.ppat.1007080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/08/2018] [Indexed: 12/25/2022] Open
Abstract
The bacterial pathogen Neisseria gonorrhoeae (Gc) infects mucosal sites rich in antimicrobial proteins, including the bacterial cell wall-degrading enzyme lysozyme. Certain Gram-negative bacteria produce protein inhibitors that bind to and inhibit lysozyme. Here, we identify Ng_1063 as a new inhibitor of lysozyme in Gc, and we define its functions in light of a second, recently identified lysozyme inhibitor, Ng_1981. In silico analyses indicated that Ng_1063 bears sequence and structural homology to MliC-type inhibitors of lysozyme. Recombinant Ng_1063 inhibited lysozyme-mediated killing of a susceptible mutant of Gc and the lysozyme-sensitive bacterium Micrococcus luteus. This inhibitory activity was dependent on serine 83 and lysine 103 of Ng_1063, which are predicted to interact with lysozyme’s active site residues. Lysozyme co-immunoprecipitated with Ng_1063 and Ng_1981 from intact Gc. Ng_1063 and Ng_1981 protein levels were also increased in Gc exposed to lysozyme. Gc lacking both ng1063 and ng1981 was significantly more sensitive to killing by lysozyme than wild-type or single mutant bacteria. When exposed to human tears or saliva, in which lysozyme is abundant, survival of Δ1981Δ1063 Gc was significantly reduced compared to wild-type, and survival was restored upon addition of recombinant Ng_1981. Δ1981Δ1063 mutant Gc survival was additionally reduced in the presence of human neutrophils, which produce lysozyme. We found that while Ng_1063 was exposed on the surface of Gc, Ng_1981 was both in an intracellular pool and extracellularly released from the bacteria, suggesting that Gc employs these two proteins at multiple spatial barriers to fully neutralize lysozyme activity. Together, these findings identify Ng_1063 and Ng_1981 as critical components for Gc defense against lysozyme. These proteins may be attractive targets for antimicrobial therapy aimed to render Gc susceptible to host defenses and/or for vaccine development, both of which are urgently needed against drug-resistant gonorrhea. The mucosal pathogen Neisseria gonorrhoeae has acquired resistance to almost all recommended antibiotics, and no gonorrhea vaccine currently exists. Attractive targets for therapeutic discovery include bacterial factors that, when inactivated, enhance bacterial susceptibility to host-derived antimicrobial components. The bacterial cell wall-degrading enzyme lysozyme is abundant in mucosal secretions and innate immune cells. To resist killing by lysozyme, some bacteria produce proteins that bind to and directly inhibit the activity of lysozyme. Here, we demonstrate lysozyme inhibitory activity in the N. gonorrhoeae protein Ng_1063. We found that both Ng_1063 and a second, recently described lysozyme inhibitor, Ng_1981, contribute to full resistance of N. gonorrhoeae to lysozyme, including resistance to lysozyme-rich mucosal secretions and human neutrophils. Although Ng_1063 and Ng_1981 are both inhibitors of lysozyme, they are distinct in their sequences, biological activities, and cellular localizations. Because both Ng_1063 and Ng_1981 are extracellular, we propose they can be targeted for vaccines and drugs that sensitize Gc to human antimicrobial defenses.
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Affiliation(s)
- Stephanie A. Ragland
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia, United States of America
| | - Marίa V. Humbert
- Neisseria Research, Molecular Microbiology, Academic Unit of Clinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton Faculty of Medicine, Southampton, United Kingdom
| | - Myron Christodoulides
- Neisseria Research, Molecular Microbiology, Academic Unit of Clinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton Faculty of Medicine, Southampton, United Kingdom
| | - Alison K. Criss
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia, United States of America
- * E-mail:
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36
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Koh YQ, Mitchell MD, Almughlliq FB, Vaswani K, Peiris HN. Regulation of inflammatory mediator expression in bovine endometrial cells: effects of lipopolysaccharide, interleukin 1 beta, and tumor necrosis factor alpha. Physiol Rep 2018; 6:e13676. [PMID: 29707922 PMCID: PMC5925570 DOI: 10.14814/phy2.13676] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/25/2022] Open
Abstract
An abnormal uterine environment can influence maternal-fetal communication, conception rate and disrupt normal embryo development, thereby affecting fertility and the reproductive performance of dairy cows. Animal variability means that development of endometrial cell lines with appropriate characteristic are required. We evaluated the effect of an infectious agent (i.e., bacterial lipopolysaccharide; LPS) and proinflammatory mediators (i.e., Interleukin 1 beta; IL-1β, and tumor necrosis factor alpha; TNFα) on inflammatory mediator gene expression and production by bovine endometrial epithelial (bEEL) and stromal (bCSC) cell lines. Expression of CXCL8/IL8, IL1A, IL1B, and IL6 cytokine genes was significantly upregulated in both epithelial and stromal cells when treated with LPS and IL-1β. LPS treatment of epithelial cells (compared with treatment by IL-1β and TNFα) exhibited greater CXCL8/IL8, IL1A, IL1B, and IL6 cytokine gene expression. Whereas, in stromal cells, IL-1β treatment (compared with LPS and TNFα) exhibited greater CXCL8/IL8, IL1A, IL1B, and IL6 cytokine gene expression. Interestingly, bEEL and bCSC cells treated with IL-1β increased IL1B gene expression, suggesting that IL-1β may act unusually in an autocrine-positive feedback loop. Cytokine production was stimulated by these agents in both cell types. We suggest that the characteristics of these two cell lines make them excellent tools for the study of intrauterine environment.
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Affiliation(s)
- Yong Qin Koh
- University of Queensland Centre for Clinical ResearchFaculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia
| | - Murray D. Mitchell
- University of Queensland Centre for Clinical ResearchFaculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia
| | - Fatema B. Almughlliq
- University of Queensland Centre for Clinical ResearchFaculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia
| | - Kanchan Vaswani
- University of Queensland Centre for Clinical ResearchFaculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia
| | - Hassendrini N. Peiris
- University of Queensland Centre for Clinical ResearchFaculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia
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37
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Amjadi F, Zandieh Z, Salehi E, Jafari R, Ghasemi N, Aflatoonian A, Fazeli A, Aflatoonian R. Variable localization of Toll-like receptors in human fallopian tube epithelial cells. Clin Exp Reprod Med 2018; 45:1-9. [PMID: 29662819 PMCID: PMC5897241 DOI: 10.5653/cerm.2018.45.1.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 09/20/2017] [Accepted: 10/14/2017] [Indexed: 01/20/2023] Open
Abstract
Objective To determine the localization, expression, and function of Toll-like receptors (TLRs) in fallopian tube epithelial cells. Methods The localization of TLRs in fallopian tube epithelial cells was investigated by immunostaining. Surprisingly, the intensity of staining was not equal in the secretory and ciliated cells. After primary cell culture of fallopian tube epithelial cells, ring cloning was used to isolate colonies of ciliated epithelial cells, distinct from non-ciliated epithelial cells. The expression of TLRs 1–10 was examined by quantitative real-time polymerase chain reaction, and protein localization was confirmed by immunostaining. The function of the TLRs was determined by interleukin (IL)-6 and IL-8 production in response to TLR2, TLR3, TLR5, TLR7, and TLR9 ligands. Results Fallopian tube epithelial cells expressed TLRs 1–10 in a cell-type-specific manner. Exposing fallopian tube epithelial cells to TLR2, TLR3, TLR5, TLR7, and TLR9 agonists induced the secretion of proinflammatory cytokines such as IL-6 and IL-8. Conclusion Our findings suggest that TLR expression in the fallopian tubes is cell-type-specific. According to our results, ciliated cells may play more effective role than non-ciliated cells in the innate immune defense of the fallopian tubes, and in interactions with gametes and embryos.
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Affiliation(s)
- Fatemehsadat Amjadi
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Zahra Zandieh
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Ensieh Salehi
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.,Department of Anatomy, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Jafari
- Department of Immunology, Iran University of Medical Sciences, Tehran, Iran
| | - Nasrin Ghasemi
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Abbas Aflatoonian
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Alireza Fazeli
- Academic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Reza Aflatoonian
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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Srisomboon Y, Poonyachoti S, Deachapunya C. Soy isoflavones enhance β-defensin synthesis and secretion in endometrial epithelial cells with exposure to TLR3 agonist polyinosinic-polycytidylic acid. Am J Reprod Immunol 2017; 78. [PMID: 28429578 DOI: 10.1111/aji.12694] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 03/25/2017] [Indexed: 12/14/2022] Open
Abstract
PROBLEM β-defensins are important innate chemical barriers that protect the endometrium from pathogen invasion. The effects of soy isoflavones, genistein and daidzein, on the expression and secretion of porcine β-defensins (PBD) in endometrial epithelial cells were investigated under normal or poly I:C-stimulated conditions. METHOD OF STUDY Primary cultured porcine endometrial epithelial (PE) cells were pretreated with genistein or daidzein followed by poly I:C inoculation. During treatment, the culture media were analyzed for PBD 1-4 secretion by ELISA and the total RNA for PBD gene expression by quantitative RT-PCR. RESULTS Porcine endometrial epithelial cells constitutively expressed PBD 1-4 and secreted PBD-1, PBD-2, and PBD-4. Genistein and daidzein enhanced PBD-2 expression and PBD-2 and PBD-3 secretion. These compounds also potentiated PBD-2 and PBD-3 expression and secretion which were upregulated by poly I:C. CONCLUSION Soy isoflavones, genistein and daidzein, could be potentially used for promoting the innate host defense of endometrium against infection.
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Affiliation(s)
- Yotesawee Srisomboon
- Department of Physiology, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| | - Sutthasinee Poonyachoti
- Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Chatsri Deachapunya
- Department of Physiology, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
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Alan E, Liman N. Toll-like receptor expression patterns in the rat uterus during post partum involution. Reprod Fertil Dev 2017; 30:330-348. [PMID: 28701256 DOI: 10.1071/rd16431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 06/12/2017] [Indexed: 11/23/2022] Open
Abstract
Toll-like receptors (TLRs) belong to a family of pathogen recognition receptors and play critical roles in detecting and responding to invading pathogens. TLR expression could be significant because, in the uterus, the reproductive tract is an important site of exposure to and infection by pathogens during the post partum involution period. To clarify the expression and localisation patterns of TLRs in the rat uterus on Days 1, 3, 5 and 10 post partum (PP1, PP3, PP5 and PP10 respectively), immunohistochemistry and western blotting were used to analyse TLR1-7, TLR9 and TLR10. The immunohistochemistry results indicated that TLR1-7, TLR9 and TLR10 were localised in both the cytoplasm and nuclei of luminal and glandular epithelium, stromal fibroblasts and myometrial cells in the rat uterus. In the luminal epithelium, TLR4-7 were also found in lateral membranes, whereas TLR10 was present in apical membranes. Western blot analysis revealed that the expression of TLR proteins increased with the number of days post partum, reaching a maximum on PP10, although levels did not differ significantly from those on PP1 (P>0.05). These findings confirm that TLR1-7, TLR9 and TLR10 are constitutively expressed in uterine cells and that localisation pattern of TLRs in the endometrium varies with structural changes in the uterus on different days of involution. These results suggest that TLRs may play a role in uterine repair and remodelling during physiological involution.
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Affiliation(s)
- Emel Alan
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Erciyes University, Kayseri 38039, Turkey
| | - Narin Liman
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Erciyes University, Kayseri 38039, Turkey
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40
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Iizuka T, Wakae K, Nakamura M, Kitamura K, Ono M, Fujiwara H, Muramatsu M. APOBEC3G is increasingly expressed on the human uterine cervical intraepithelial neoplasia along with disease progression. Am J Reprod Immunol 2017; 78. [PMID: 28590025 DOI: 10.1111/aji.12703] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 04/14/2017] [Indexed: 12/15/2022] Open
Abstract
PROBLEM APOBEC3G (A3G) is a cytidine deaminase that exhibits antiviral activity by introducing C-to-T hypermutation in viral DNA. We recently observed the distinct presence of C-to-T hypermutation of human papillomavirus DNA in uterine cervical intraepithelial neoplasia (CIN), suggesting the possible involvement of A3G in the mutation-inducing process. Consequently, we investigated the association of A3G expression with CIN progression in this study. METHOD OF STUDY Patients who had undergone cervical conization due to CIN1 (n=11), CIN2 (n=9), CIN3 (n=12), and micro-invasive squamous cell carcinoma (n=2) were included. The expression profiles of A3G and p16 proteins in cervical lesions and A3G-positive immune cells around the lesions were examined by immunohistochemistry. RESULTS Immunoreactive A3G protein was detected in the CIN and squamous cell carcinoma lesions. Its expression intensity and positive areas were increased and spread in accordance with the progression of CIN, respectively. The co-expression of p16 was observed on the A3G-positive atypical cells. The numbers of A3G-positive immune cells in CIN3 lesions were significantly higher than those of CIN1-2 lesions. CONCLUSION These findings indicate that A3G is associated with CIN, suggesting its important roles in human papillomavirus-induced pathophysiological processes such as CIN progression and viral elimination.
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Affiliation(s)
- Takashi Iizuka
- Department of Molecular Genetics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.,Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Kousho Wakae
- Department of Molecular Genetics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Mitsuhiro Nakamura
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Koichi Kitamura
- Department of Molecular Genetics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masanori Ono
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Fujiwara
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masamichi Muramatsu
- Department of Molecular Genetics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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de Oliveira Francisco D, de Paula Andres M, Gueuvoghlanian-Silva BY, Podgaec S, Fridman C. CCDC22 gene polymorphism is associated with advanced stages of endometriosis in a sample of Brazilian women. J Assist Reprod Genet 2017; 34:939-944. [PMID: 28470452 DOI: 10.1007/s10815-017-0936-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 04/25/2017] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Based on the assumption that genetic factors are involved in the etiology of endometriosis, this study aimed to investigate the possibility of rs498679 (TLR4 gene), rs1799964 (TNF-α gene), rs3024496 (IL-10 gene), and rs2294021 (CCDC22 gene) polymorphisms being associated with the occurrence of this disease in a sample of Brazilian women. METHODS We conducted a case-control study with 100 women with histological confirmation of endometriosis (endometriosis group) and 100 women submitted to laparoscopy for benign disorders, in which the absence of endometriosis was confirmed (control group). All samples were genotyped by real-time PCR technique for rs498679, rs1799964, rs3024496, and rs2294021 polymorphisms. RESULTS No significant difference was observed in genotypic or allelic frequencies between control and endometriosis groups for rs498679 (TLR4 gene), rs1799964 (TNF-α gene), rs3024496 (IL-10 gene), neither when comparing endometriosis subgroups (I-II versus III-IV). On the other hand, significant difference between stages I-II and III-IV of the disease was found in genotypic and allelic frequencies for the rs2294021 (CCDC22 gene) SNP (p = 0.048 and p = 0.017, respectively). CONCLUSION Our results suggest that the rs2294021 (CCDC22 gene) polymorphism could be associated with increased susceptibility to endometriosis in Brazilian women when the allele C is present. In order to clarify this result, further studies should be conducted on a larger population.
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Affiliation(s)
- Daniela de Oliveira Francisco
- Department of Legal Medicine, Ethics and Occupational Health, Medical School, University of São Paulo, Rua Teodoro Sampaio, n°115, Cerqueira Cesar, Sao Paulo, SP, CEP: 05405-000, Brazil
| | - Marina de Paula Andres
- Department of Obstetrics and Gynecology, Clinics Hospital, Medical School, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 155, 10th floor, Department of Gynecology, Cerqueira Cesar, Sao Paulo, SP, CEP: 05403-010, Brazil
| | - Bárbara Yasmim Gueuvoghlanian-Silva
- Jewish Teaching and Research Institute, Albert Einstein Hospital, Avenida Albert Einstein 627, Morumbi, Sao Paulo, SP, CEP: 05652-900, Brazil
| | - Sergio Podgaec
- Department of Obstetrics and Gynecology, Clinics Hospital, Medical School, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 155, 10th floor, Department of Gynecology, Cerqueira Cesar, Sao Paulo, SP, CEP: 05403-010, Brazil
- Jewish Teaching and Research Institute, Albert Einstein Hospital, Avenida Albert Einstein 627, Morumbi, Sao Paulo, SP, CEP: 05652-900, Brazil
| | - Cintia Fridman
- Department of Legal Medicine, Ethics and Occupational Health, Medical School, University of São Paulo, Rua Teodoro Sampaio, n°115, Cerqueira Cesar, Sao Paulo, SP, CEP: 05405-000, Brazil.
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Shaw JH, Behar AR, Snider TA, Allen NA, Lutter EI. Comparison of Murine Cervicovaginal Infection by Chlamydial Strains: Identification of Extrusions Shed In vivo. Front Cell Infect Microbiol 2017; 7:18. [PMID: 28217555 PMCID: PMC5289954 DOI: 10.3389/fcimb.2017.00018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 01/16/2017] [Indexed: 12/23/2022] Open
Abstract
Chlamydia trachomatis is the leading cause of bacterial sexually transmitted infections (STIs) and preventable blindness. Untreated, asymptomatic infection as well as frequent re-infection are common and may drive pelvic inflammatory disease, ectopic pregnancy, and infertility. In vivo models of chlamydial infection continue to be instrumental in progress toward a vaccine and further elucidating the pathogenesis of this intracellular bacterium, however significant gaps in our understanding remain. Chlamydial host cell exit occurs via two mechanisms, lysis and extrusion, although the latter has yet to be reported in vivo and its biological role is unclear. The objective of this study was to investigate whether chlamydial extrusions are shed in vivo following infection with multiple strains of Chlamydia. We utilized an established C3H/HeJ murine cervicovaginal infection model with C. trachomatis serovars D and L2 and the Chlamydia muridarum strain MoPn to monitor the (i) time course of infection and mode of host cell exit, (ii) mucosal and systemic immune response to infection, and (iii) gross and histopathology following clearance of active infection. The key finding herein is the first identification of chlamydial extrusions shed from host cells in an in vivo model. Extrusions, a recently appreciated mode of host cell exit and potential means of dissemination, had been previously observed solely in vitro. The results of this study demonstrate that chlamydial extrusions exist in vivo and thus warrant further investigation to determine their role in chlamydial pathogenesis.
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Affiliation(s)
- Jennifer H Shaw
- Department of Integrative Biology, Oklahoma State University Stillwater, OK, USA
| | - Amanda R Behar
- Department of Microbiology and Molecular Genetics, Oklahoma State University Stillwater, OK, USA
| | - Timothy A Snider
- Department of Veterinary Pathobiology, Oklahoma State University Stillwater, OK, USA
| | - Noah A Allen
- Department of Integrative Biology, Oklahoma State University Stillwater, OK, USA
| | - Erika I Lutter
- Department of Microbiology and Molecular Genetics, Oklahoma State University Stillwater, OK, USA
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Suprasert P, Siriaree S, Manopunya M. Outcomes of Metastatic Gestational Trophoblastic Neoplasia: Fourteen Year Experience from a Northern Thailand Tertiary Care Center. Asian Pac J Cancer Prev 2017; 17:1357-62. [PMID: 27039772 DOI: 10.7314/apjcp.2016.17.3.1357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Metastatic gestational trophoblastic neoplasia (GTN) is an uncommon cancer. The principal treatment consists of chemotherapy with or without surgery or radiotherapy. We here retrospectively reviewed the outcomes of metastatic GTN treated at our institute between January, 1999 and December, 2013. Sixty-three patients met the criteria. The median age was 30.0 years and almost 90% were referral cases. Nearly 40% of the studied patients presented with vaginal bleeding while 22.2% were asymptomatic. The most common antecedent pregnancy was hydatidiform mole (57.1%) followed by term pregnancy (20.6%). The median interval time from antecedent pregnancy to the development of GTN was three months and the median pretreatment B-hCG was 58,274 mIU/ ml. Stage III (74.6%) was the most common staging followed by stage IV (20.6%) and stage II (4.8%). The most frequent surgery was hysterectomy (31.7%). Thoracotomy and craniotomy were performed in three and two patients, respectively. The most common first line chemotherapy regimen was methotrexate and folinic acid (36.5%) followed by EMA (etoposide, methotrexate, actinomycin D) (34.9%), EMACO (etoposide, methotrexate, actinomycin D, cyclophosphamide, vincristine) (17.5%) with the remission rate of 66.7%. Nearly one-third of the patients were given a subsequent chemotherapy regimen after failure with the first line therapy and showed a final response rate of 73.0%. However, in stage IV, the response to first line treatment was only 38.5%. In conclusion, the outcomes of metastatic GTN were poor especially with the higher stages.
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Affiliation(s)
- Prapaporn Suprasert
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand E-mail :
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Lu P, Zhang CH, Lifshitz LM, ZhuGe R. Extraoral bitter taste receptors in health and disease. J Gen Physiol 2017; 149:181-197. [PMID: 28053191 PMCID: PMC5299619 DOI: 10.1085/jgp.201611637] [Citation(s) in RCA: 136] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/06/2016] [Accepted: 12/19/2016] [Indexed: 12/24/2022] Open
Abstract
Bitter taste receptors (TAS2Rs or T2Rs) belong to the superfamily of seven-transmembrane G protein-coupled receptors, which are the targets of >50% of drugs currently on the market. Canonically, T2Rs are located in taste buds of the tongue, where they initiate bitter taste perception. However, accumulating evidence indicates that T2Rs are widely expressed throughout the body and mediate diverse nontasting roles through various specialized mechanisms. It has also become apparent that T2Rs and their polymorphisms are associated with human disorders. In this review, we summarize the physiological and pathophysiological roles that extraoral T2Rs play in processes as diverse as innate immunity and reproduction, and the major challenges in this emerging field.
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Affiliation(s)
- Ping Lu
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605
| | - Cheng-Hai Zhang
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605
| | - Lawrence M Lifshitz
- Biomedical Imaging Group, University of Massachusetts Medical School, Worcester, MA 01605.,Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Ronghua ZhuGe
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 .,Biomedical Imaging Group, University of Massachusetts Medical School, Worcester, MA 01605
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Bradford LL, Ravel J. The vaginal mycobiome: A contemporary perspective on fungi in women's health and diseases. Virulence 2016; 8:342-351. [PMID: 27657355 PMCID: PMC5411243 DOI: 10.1080/21505594.2016.1237332] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Most of what is known about fungi in the human vagina has come from culture-based studies and phenotypic characterization of single organisms. Though valuable, these approaches have masked the complexity of fungal communities within the vagina. The vaginal mycobiome has become an emerging field of study as genomics tools are increasingly employed and we begin to appreciate the role these fungal communities play in human health and disease. Though vastly outnumbered by its bacterial counterparts, fungi are important constituents of the vaginal ecosystem in many healthy women. Candida albicans, an opportunistic fungal pathogen, colonizes 20% of women without causing any overt symptoms, yet it is one of the leading causes of infectious vaginitis. Understanding its mechanisms of commensalism and patho-genesis are both essential to developing more effective therapies. Describing the interactions between Candida, bacteria (such as Lactobacillus spp.) and other fungi in the vagina is funda-mental to our characterization of the vaginal mycobiome.
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Affiliation(s)
- L. Latéy Bradford
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA,Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jacques Ravel
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA,Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, USA,CONTACT Jacques Ravel Institute for Genome Sciences, 801 W. Baltimore Street, Baltimore, MD 21201, USA
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Menezes CB, Tasca T. Trichomoniasis immunity and the involvement of the purinergic signaling. Biomed J 2016; 39:234-243. [PMID: 27793265 PMCID: PMC6138788 DOI: 10.1016/j.bj.2016.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/27/2016] [Accepted: 06/30/2016] [Indexed: 12/31/2022] Open
Abstract
Innate and adaptive immunity play a significant role in trichomoniasis, the most common non-viral sexually transmitted disease worldwide. In the urogenital tract, innate immunity is accomplished by a defense physical barrier constituted by epithelial cells, mucus, and acidic pH. During infection, immune cells, antimicrobial peptides, cytokines, chemokines, and adaptive immunity evolve in the reproductive tract, and a proinflammatory response is generated to eliminate the invading extracellular pathogen Trichomonas vaginalis. However, the parasite has developed complex evolutionary mechanisms to evade the host immune response through cysteine proteases, phenotypic variation, and molecular mimicry. The purinergic system constitutes a signaling cellular net where nucleotides and nucleosides, enzymes, purinoceptors and transporters are involved in almost all cells and tissues signaling pathways, especially in central and autonomic nervous systems, endocrine, respiratory, cardiac, reproductive, and immune systems, during physiological as well as pathological processes. The involvement of the purinergic system in T. vaginalis biology and infection has been demonstrated and this review highlights the participation of this signaling pathway in the parasite immune evasion strategies.
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Affiliation(s)
- Camila Braz Menezes
- Parasitology Research Laboratory, Pharmacy Faculty, Federal University of Rio Grande do Sul, Brazil
| | - Tiana Tasca
- Parasitology Research Laboratory, Pharmacy Faculty, Federal University of Rio Grande do Sul, Brazil.
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Shaeib F, Khan SN, Thakur M, Kohan-Ghadr HR, Drewlo S, Saed GM, Pennathur S, Abu-Soud HM. The Impact of Myeloperoxidase and Activated Macrophages on Metaphase II Mouse Oocyte Quality. PLoS One 2016; 11:e0151160. [PMID: 26982351 PMCID: PMC4794194 DOI: 10.1371/journal.pone.0151160] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/24/2016] [Indexed: 01/26/2023] Open
Abstract
Myeloperoxidase (MPO), an abundant heme-containing enzyme present in neutrophils, monocytes, and macrophages, is produced in high levels during inflammation, and associated with poor reproductive outcomes. MPO is known to generate hypochlorous acid (HOCl), a damaging reactive oxygen species (ROS) utilizing hydrogen peroxide (H2O2) and chloride (Cl-). Here we investigate the effect of activated immune cells and MPO on oocyte quality. Mouse metaphase II oocytes were divided into the following groups: 1) Incubation with a catalytic amount of MPO (40 nM) for different incubation periods in the presence of 100 mM Cl- with and without H2O2 and with and without melatonin (100 μM), at 37°C (n = 648/648 total number of oocytes in each group for oocytes with and without cumulus cells); 2) Co-cultured with activated mouse peritoneal macrophage and neutrophils cells (1.0 x 106 cells/ml) in the absence and presence of melatonin (200 μM), an MPO inhibitor/ROS scavenger, for different incubation periods in HTF media, at 37°C (n = 200/200); 3) Untreated oocytes incubated for 4 hrs as controls (n = 73/64). Oocytes were then fixed, stained and scored based on the microtubule morphology and chromosomal alignment. All treatments were found to negatively affect oocyte quality in a time dependent fashion as compared to controls. In all cases the presence of cumulus cells offered no protection; however significant protection was offered by melatonin. Similar results were obtained with oocytes treated with neutrophils. This work provides a direct link between MPO and decreased oocyte quality. Therefore, strategies to decrease MPO mediated inflammation may influence reproductive outcomes.
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Affiliation(s)
- Faten Shaeib
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
| | - Sana N. Khan
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
| | - Mili Thakur
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
| | - Hamid-Reza Kohan-Ghadr
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
| | - Sascha Drewlo
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
| | - Ghassan M. Saed
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
| | - Subramaniam Pennathur
- Division of Nephrology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Husam M. Abu-Soud
- Department of Obstetrics and Gynecology, the C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
- Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, MI 48201, United States of America
- * E-mail:
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Hayatdavoudi P, Ghasemi M, Zendehbad B, Soukhtanloo M, Golshan A, Hadjzadeh MAR. Effect of exogenous leptin on serum levels of lipids, glucose, renal and hepatic variables in both genders of obese and streptozotocin-induced diabetic rats. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2015; 18:1072-8. [PMID: 26949493 PMCID: PMC4764107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Leptin exerts various effects on appetite and body weight. Disruption of the obesity gene is precedent to fatness. Insulin or glucose elevates leptin, but streptozotocin reduces it. However, controversial data exist for the effects of leptin on diabetes and leptin level in each gender. Leptin can damage the kidney function but little evidence exists for its hepatic effects. The aim of this study was to investigate the probable sex-dependent differences in blood sugar levels, lipid profile, and renal and hepatic biochemical factors in the obesity and streptozotocin-induced diabetic rats after leptin administration. MATERIALS AND METHODS Wistar rats of both sexes were randomly divided into two groups, namely obese and diabetic rats. Each group was further divided into male and female subgroups. Extra fat and carbohydrate was added to the diet to induce obesity. Furthermore, streptozotocin (55 mg/kg, IP) was injected to induce diabetes. The treatment groups received leptin (0.1 mg/kg SC) for 10 days, and then, blood samples were taken from the orbital sinus for laboratory evaluations. RESULTS Leptin resulted in a significant weight loss in both sexes (P<0.001), food intake reduction in male rats (P<0.05), LDL reduction in female rats (obese (P<0.05) and diabetic (P<0.001)), and glucose level decline in the female diabetic rats (P<0.001). However, total protein concentration, LFT (liver function tests), urea and creatinin concentrations among different groups did not show any significant changes. CONCLUSION Leptin caused some discrepant results, especially regarding the LDL and glucose levels in diabetic female rats.
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Affiliation(s)
- Parichehr Hayatdavoudi
- Neurogenic Inflammation Research center, Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Ghasemi
- Faculty of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Bamdad Zendehbad
- Neurogenic Inflammation Research center, Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Soukhtanloo
- Department of Medical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Golshan
- Faculty of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Mousa Al-Reza Hadjzadeh
- Neurocognitive Research Center, Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran,Corresponding author: Mousa Al-Reza Hadjzadeh. Neurocognitive Research Center, Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Tel: +98-51-38828565; Fax: +98-51-38828564;
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V. Sgibnev A, A. Kremleva E. Vaginal Protection by H2O2-Producing Lactobacilli. Jundishapur J Microbiol 2015; 8:e22913. [PMID: 26587206 PMCID: PMC4644264 DOI: 10.5812/jjm.22913] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 01/16/2015] [Accepted: 02/05/2015] [Indexed: 11/16/2022] Open
Abstract
Background: Peroxide-producing lactobacilli provide protection from infection for the female reproductive tract. However, in vitro studies demonstrated that H2O2-produced by Lactobacillus is not the cause of inhibition of pathogens. It is not exactly known how H2O2-producing lactobacilli are involved in the protection of the vaginal environment. Objectives: This study aimed to evaluate the importance of the interaction between H2O2-producing lactobacilli and their host for the resistance of the vaginal biotope. Materials and Methods: In this study, we used vaginal lactobacilli (11 H2O2-roducing strains and 11 non-H2O2-producing strains). The influence of epithelial cells on the growth and antibacterial activity of lactobacilli were evaluated. The effects of lactobacilli on the antibacterial activity of the epithelial cells, muramidase and lactoferrin were also determined. Results: Vaginal epithelial cells stimulated the growth and antibacterial activity of H2O2-producing lactobacilli in a greater extent than that of the non-H2O2-producing lactobacilli. Mainly, the H2O2-producing lactobacilli were capable of increasing the activity of the host antimicrobial peptides (muramidase and lactoferrin) as well as the antibacterial activity of the epithelial cells. Conclusions: The involvement of the peroxide-producing lactobacilli in the protection of vagina was due to their ability to effectively interact with the host. This is expressed on one side to stimulate the growth and antagonistic activity of lactobacilli and on the other side to increase the antibacterial activity of the host defense factors (muramidase, lactoferrin and metabolites of epithelial cells).
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Affiliation(s)
- Andrey V. Sgibnev
- Institute of Cellular and Intracellular Symbiosis, Orenburg, Russia
- Corresponding author: Andrey V. Sgibnev, Institute of Cellular and Intracellular Symbiosis, Orenburg, Russia. Fax: +7-3532774463, E-mail:
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Abstract
Multiple previous reports have provided compelling support for the premise that spontaneous parturition is mediated by activation of inflammation-related signaling pathways leading to increased secretion of cytokines and chemokines, the influx of neutrophils and macrophages into the pregnant uterus, increased production of uterine activation proteins (eg, connexin-43, cyclo-oxygenase-2, oxytocin receptors, etc), activation of matrix metalloproteinases, and the release of uterotonins leading to cervical ripening, membrane rupture, and myometrial contractions. The missing link has been the fetal/placental signal that triggers these proinflammatory events in the absence of microbial invasion and intrauterine infection. This article reviews the biomedical literature regarding the increase in cell-free fetal DNA (cffDNA), which is released during apoptosis in the placenta and fetal membranes at term, the ability of apoptosis modified vertebrate DNA to stimulate toll-like receptor-9 (TLR9) leading to increased release of cytokines and chemokines, and the potential "fail-safe" role for the anti-inflammatory cytokine IL-10. This article also reviews the literature supporting the key role that telomere loss plays in regard to increasing the ability of vertebrate (including placental) DNA to stimulate TLR9, and in regard to signaling the onset of apoptosis in the placenta and fetal membranes, thereby providing a biologic clock that determines the length of gestation and the timing for the onset of parturition. In summary, this literature review provides a strong rationale for future research to test the hypothesis that telomere loss and increased cffDNA levels trigger the proinflammatory events leading to the spontaneous onset of parturition in mammals: the "cffDNA/telomere hypothesis."
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Affiliation(s)
- Mark Phillippe
- Department of Obstetrics, Gynecology & Reproductive Biology, Harvard Medical School, Boston, MA, USA
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