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Yee JL, Huang CY, Yu YC, Huang SJ. Potential Mechanisms of Guizhi Fuling Wan in Treating Endometriosis: An Analysis Based on TCMSP and DisGeNET Databases. JOURNAL OF ETHNOPHARMACOLOGY 2024; 329:118190. [PMID: 38614264 DOI: 10.1016/j.jep.2024.118190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 03/19/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Guizhi Fuling Wan (GFW), is a traditional Chinese herbal formula that consists of Cinnamomi Ramulus (Guizhi), Poria Cocos(Schw.) Wolf. (Fuling), Persicae Semen (Taoren), Radix Paeoniae Rubra (Chishao), and Cortex Moutan (Mudanpi). This formula has been used in traditional Chinese medicine for more than 1800 years to treat disorders caused by stagnation of circulation and qi (air). AIM OF THE STUDY Based on pre-clinical and clinical studies, this review aimed to reveal the potential mechanisms of GFW in inhibiting endometriosis. The enhancement of therapeutic effects of western medications on endometriosis by GFW was also shown. MATERIALS AND METHODS A bibliographic assessment of publications on "Guizhi Fuling Wan" and "endometriosis" indexed in PubMed, Science Direct, and China National Knowledge Infrastructure (CNKI) was conducted. Five pre-clinical studies and 13 clinical studies were selected for this review. Moreover, the targeted molecules of each herb were first extracted from the Traditional Chinese Medicine Systems Pharmacology (TCMSP) Database and Analysis Platform followed by obtaining the endometriosis-related genes from DisGeNET. Subsequently, pathway and gene ontology analyses using David Bioinformatics Resources explored the potential mechanisms of therapeutic effects of GFW in treating endometriosis. RESULTS Pre-clinical and clinical studies showed that GFW might inhibit the growth of endometriotic lesion through the modulation of immunity, apoptosis-regulating molecules, and angiogenesis-associated factors, while enhancing the therapeutic effects of western medications in treating endometriosis. Furthermore, pathway and gene ontology analyses demonstrated that GFW might attenuate the disease primarily by affecting AGE-RAGE signaling pathway in diabetic complications (hsa04933) as well as pathways involved in Kaposi sarcoma-associated herpesvirus infection (hsa05167), human cytomegalovirus infection (has05163), and fluid shear stress and atherosclerosis (hsa05418). These pathways were all involved in the regulation of inflammation, angiogenesis, and apoptosis and commonly affected by all herbs. CONCLUSIONS The current review revealed that endometriosis is highly associated with aberrant inflammatory, angiogenic, and apoptotic activities. The therapeutic effects of GFW on endometriosis are likely to act through regulating these activities.
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Affiliation(s)
- Jian-Looi Yee
- School of Post-baccalaureate Chinese Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan, ROC
| | - Chun-Yen Huang
- Department of Obstetrics and Gynecology, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, ROC; Department of Medical Research, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, ROC
| | - Ya-Chun Yu
- Department of Obstetrics and Gynecology, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, ROC; Department of Medical Research, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, ROC
| | - S Joseph Huang
- Department of Obstetrics and Gynecology, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, ROC; School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan, ROC; Department of Obstetrics and Gynecology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
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Rodent Animal Models of Endometriosis-Associated Pain: Unmet Needs and Resources Available for Improving Translational Research in Endometriosis. Int J Mol Sci 2023; 24:ijms24032422. [PMID: 36768741 PMCID: PMC9917069 DOI: 10.3390/ijms24032422] [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: 12/12/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023] Open
Abstract
Chronic pain induced by endometriosis is a maladaptive pain experienced by half of women with this disease. The lack of pharmacological treatments suitable for the long-term relief of endometriosis-associated pain, without an impact on fertility, remains an urgent unmet need. Progress has been slowed by the absence of a reproducible rodent endometriosis model that fully replicates human physiopathological characteristics, including pain symptoms. Although pain assessment in rodents is a complicated task requiring qualified researchers, the choice of the behavioral test is no less important, since selecting inappropriate tests can cause erroneous data. Pain is usually measured with reflex tests in which hypersensitivity is evaluated by applying a noxious stimulus, yet this ignores the associated emotional component that could be evaluated via non-reflex tests. We conducted a systematic review of endometriosis models used in rodents and the number of them that studied pain. The type of behavioral test used was also analyzed and classified according to reflex and non-reflex tests. Finally, we determined the most used reflex tests for the study of endometriosis-induced pain and the main non-reflex behavioral tests utilized in visceral pain that can be extrapolated to the study of endometriosis and complement traditional reflex tests.
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Szukiewicz D. Epigenetic regulation and T-cell responses in endometriosis – something other than autoimmunity. Front Immunol 2022; 13:943839. [PMID: 35935991 PMCID: PMC9355085 DOI: 10.3389/fimmu.2022.943839] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Endometriosis is defined as the presence of endometrial-like glands and stroma located outside the uterine cavity. This common, estrogen dependent, inflammatory condition affects up to 15% of reproductive-aged women and is a well-recognized cause of chronic pelvic pain and infertility. Despite the still unknown etiology of endometriosis, much evidence suggests the participation of epigenetic mechanisms in the disease etiopathogenesis. The main rationale is based on the fact that heritable phenotype changes that do not involve alterations in the DNA sequence are common triggers for hormonal, immunological, and inflammatory disorders, which play a key role in the formation of endometriotic foci. Epigenetic mechanisms regulating T-cell responses, including DNA methylation and posttranslational histone modifications, deserve attention because tissue-resident T lymphocytes work in concert with organ structural cells to generate appropriate immune responses and are functionally shaped by organ-specific environmental conditions. Thus, a failure to precisely regulate immune cell transcription may result in compromised immunological integrity of the organ with an increased risk of inflammatory disorders. The coexistence of endometriosis and autoimmunity is a well-known occurrence. Recent research results indicate regulatory T-cell (Treg) alterations in endometriosis, and an increased number of highly active Tregs and macrophages have been found in peritoneal fluid from women with endometriosis. Elimination of the regulatory function of T cells and an imbalance between T helper cells of the Th1 and Th2 types have been reported in the endometria of women with endometriosis-associated infertility. This review aims to present the state of the art in recognition epigenetic reprogramming of T cells as the key factor in the pathophysiology of endometriosis in the context of T-cell-related autoimmunity. The new potential therapeutic approaches based on epigenetic modulation and/or adoptive transfer of T cells will also be outlined.
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Morris SA, Korach KS, Burns KA. Unique Sensitivity of Uterine Tissue and the Immune System for Endometriotic Lesion Formation. Front Physiol 2021; 12:805784. [PMID: 34975547 PMCID: PMC8719640 DOI: 10.3389/fphys.2021.805784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 11/23/2021] [Indexed: 12/04/2022] Open
Abstract
Endometriosis is a debilitating disease that affects about 10% of reproductive-aged adolescents and women. The etiology of the disease is unknown; however, a prevailing hypothesis is that endometriosis develops from retrograde menstruation, where endometrial tissue and fluids flow back through the oviducts into the peritoneal cavity. There is no cure for endometriosis, and symptoms are treated palliatively. Despite the advances in knowledge, the complexity of endometriosis etiology is still unknown. Recent work by our group suggests that the initiation of endometriosis is immune-dependent. Using a mouse model of endometriosis, we hypothesized the initiation of endometriosis is immune regulated and uterine endometrium specific. In the absence of a functional immune system non-obese diabetic/severe combined immunodeficiency (NOD/SCID mice), endometriotic lesions did not form. Uterine endometrial tissue forms endometriotic lesions, whereas tissues with differing basal expression levels of estrogen receptor alpha (ESR1) and estrogen receptor beta (ESR2), similar cellular composition to uterus (i.e. bladder, mammary gland, and lung), and treated with estradiol did not form lesions. As MMP7 is known to play a major role in the organization/reorganization of the endometrium during the menstrual cycle, blocking metalloproteinase (MMP) activity significantly decreased the invasive properties of these cells. Together, these findings suggest that endometriosis is immune and uterine specific and that MMP7 likely plays a role in the ability of uterine tissue and the innate immune system to establish and maintain endometriotic lesions.
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Affiliation(s)
- Stephanie A. Morris
- Department of Environmental Health, Division of Environmental Genetics and Molecular Toxicology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Kenneth S. Korach
- Receptor Biology Group, Reproductive, and Developmental Biology Laboratory, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health, Research Triangle Park, NC, United States
| | - Katherine A. Burns
- Department of Environmental Health, Division of Environmental Genetics and Molecular Toxicology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- *Correspondence: Katherine A. Burns
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Vashisht A, Alali Z, Nothnick WB. Deciphering the Role of miRNAs in Endometriosis Pathophysiology Using Experimental Endometriosis Mouse Models. ADVANCES IN ANATOMY, EMBRYOLOGY, AND CELL BIOLOGY 2020; 232:79-97. [PMID: 33278008 DOI: 10.1007/978-3-030-51856-1_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Endometriosis is an enigmatic disease for which we still have a poor understanding on how and why the disease develops. In recent years, miRNAs, small noncoding RNAs which regulate gene expression posttranscriptionally, have been evaluated for their role in endometriosis pathophysiology. This review will provide a brief summary on the role of miRNAs in endometrial physiology and pathophysiology as related to endometriosis. We will then discuss mouse models used in endometriosis research and the incorporation of some of these models in studies which examined the role of miRNAs in endometriosis pathophysiology. We conclude with providing future prospective on the role of mouse models in dissecting the role of miRNAs in endometriosis pathophysiology.
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Affiliation(s)
- Ayushi Vashisht
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Zahraa Alali
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Warren B Nothnick
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA. .,Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, KS, USA. .,Center for Reproductive Sciences, Institute for Reproductive and Perinatal Research, University of Kansas Medical Center, Kansas City, KS, USA.
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Koch Y, Wimberger P, Grümmer R. Human chorionic gonadotropin induces decidualization of ectopic human endometrium more effectively than forskolin in an in-vivo endometriosis model. Exp Biol Med (Maywood) 2018; 243:953-962. [PMID: 29886768 PMCID: PMC6108049 DOI: 10.1177/1535370218782658] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 05/21/2018] [Indexed: 12/28/2022] Open
Abstract
Endometriosis, characterized by the presence of endometrial tissue at ectopic sites, is a leading cause of pelvic pain and subfertility in women. The stromal compartment of the endometrium is considered to play a pivotal role in the establishment and persistence of endometriotic lesions, thus impaired decidualization of these cells may result in enhanced invasion capacity at ectopic sites. Consequently, stimulation of decidualization may alleviate this disease. To analyze the effect of systemically applied compounds on decidualization of ectopic endometrial tissue, endometriosis was induced by suturing human eutopic endometrium to the peritoneum of 22 NOD/SCID mice. Each mouse received four tissue fragments from the same patient. Mice were randomly allocated either to one control and three experimental groups ( n = 4/group) which were treated with progesterone alone or in combination with forskolin or human chorionic gonadotropin for seven days or to one control and one experimental group ( n = 3/group) which was treated with progesterone and human chorionic gonadotropin for 10 days followed by 7 days without treatment. At the end of the experiments, lesions were measured and analyzed for markers of decidualization (FOXO-1, prolactin) and proliferation (Ki-67). Decidualization was induced in the ectopic lesions by systemic treatment in vivo. This induction was significantly stronger after treatment with progesterone in combination with human chorionic gonadotropin than with forskolin or with progesterone alone. Only the combination with human chorionic gonadotropin led to induction of FOXO1 protein expression and a significant physiologic transformation of the ectopic endometrial stromal cells after seven days of treatment. After termination of human chorionic gonadotropin treatment, the decidualization process continued, leading to a significant inhibition of proliferation. Thus, decidualization of human ectopic endometrial tissue can be induced in a humanized endometriosis mouse model in vivo. This model may help to decipher the signal pathways involved in this decidualization process and to develop novel therapeutical approaches to alleviate this painful disease. Impact statement Impaired decidualization of endometrial stromal cells may contribute to the development of endometriosis, and an increased decidualization reaction may prevent or alleviate this prevalent gynecological disease. Human chorionic gonadotropin (hCG) has been shown to promote decidualization in eutopic endometrium. Up to now in vitro studies mainly used cAMP for successful induction of decidualization of isolated endometrial stromal cells. Here, for the first time, decidualization of ectopic endometrial lesions is induced in an experimental endometriosis mouse model, comparing the effectiveness of hCG with that of the direct adenylyl cyclase activator Forskolin. In this 3D-organ structure in vivo, hCG proved to be more effective in the induction of decidualization than forskolin. Particularly in case of progesterone resistance, alternative pathways inducing decidualization could alleviate endometriosis, and the sophisticated hCG action could constitute a therapeutical tool to induce terminal differentiation in ectopic endometrial lesions.
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Affiliation(s)
- Yvonne Koch
- Institute of Anatomy, University Hospital, Universität Duisburg-Essen, Essen 45147, Germany
| | - Pauline Wimberger
- Department of Gynecology and Obstetrics, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden 01307, Germany
| | - Ruth Grümmer
- Institute of Anatomy, University Hospital, Universität Duisburg-Essen, Essen 45147, Germany
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Bruner-Tran KL, Mokshagundam S, Herington JL, Ding T, Osteen KG. Rodent Models of Experimental Endometriosis: Identifying Mechanisms of Disease and Therapeutic Targets. CURRENT WOMEN'S HEALTH REVIEWS 2018; 14:173-188. [PMID: 29861705 PMCID: PMC5925870 DOI: 10.2174/1573404813666170921162041] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/03/2017] [Accepted: 08/10/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Although it has been more than a century since endometriosis was initially described in the literature, understanding the etiology and natural history of the disease has been challenging. However, the broad utility of murine and rat models of experimental endometriosis has enabled the elucidation of a number of potentially targetable processes which may otherwise promote this disease. OBJECTIVE To review a variety of studies utilizing rodent models of endometriosis to illustrate their utility in examining mechanisms associated with development and progression of this disease. RESULTS Use of rodent models of endometriosis has provided a much broader understanding of the risk factors for the initial development of endometriosis, the cellular pathology of the disease and the identification of potential therapeutic targets. CONCLUSION Although there are limitations with any animal model, the variety of experimental endometriosis models that have been developed has enabled investigation into numerous aspects of this disease. Thanks to these models, our under-standing of the early processes of disease development, the role of steroid responsiveness, inflammatory processes and the peritoneal environment has been advanced. More recent models have begun to shed light on how epigenetic alterations con-tribute to the molecular basis of this disease as well as the multiple comorbidities which plague many patients. Continued de-velopments of animal models which aid in unraveling the mechanisms of endometriosis development provide the best oppor-tunity to identify therapeutic strategies to prevent or regress this enigmatic disease.
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Affiliation(s)
- Kaylon L. Bruner-Tran
- Department of Obstetrics and Gynecology, Women’s Reproductive Health Research Center, Nashville, TN37232, USA
| | - Shilpa Mokshagundam
- Department of Obstetrics and Gynecology, Women’s Reproductive Health Research Center, Nashville, TN37232, USA
| | - Jennifer L. Herington
- Division of Neonatology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN37232, USA
| | - Tianbing Ding
- Department of Obstetrics and Gynecology, Women’s Reproductive Health Research Center, Nashville, TN37232, USA
| | - Kevin G. Osteen
- Department of Obstetrics and Gynecology, Women’s Reproductive Health Research Center, Nashville, TN37232, USA
- VA Tennessee Valley Healthcare System, NashvilleTN37212, USA
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Bruner-Tran KL, Herington JL, Duleba AJ, Taylor HS, Osteen KG. Medical management of endometriosis: emerging evidence linking inflammation to disease pathophysiology. MINERVA GINECOLOGICA 2013; 65:199-213. [PMID: 23598784 PMCID: PMC3718308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Progesterone action normally mediates the balance between anti-inflammatory and proinflammatory processes throughout the female reproductive tract. However, in women with endometriosis, endometrial progesterone resistance, characterized by alterations in progesterone responsive gene and protein expression, is now considered a central element in disease pathophysiology. Recent studies additionally suggest that the peritoneal microenvironment of endometriosis patients exhibits altered physiological characteristics that may further promote inflammation-driven disease development and progression. Within this review, we summarize our current understanding of the pathogenesis of endometriosis with an emphasis on the role that inflammation plays in generating not only the progesterone-resistant eutopic endometrium but also a peritoneal microenvironment that may contribute significantly to disease establishment. Viewing endometriosis from the emerging perspective that a progesterone resistant endometrium and an immunologically compromised peritoneal microenvironment are biologically linked risk factors for disease development provides a novel mechanistic framework to identify new therapeutic targets for appropriate medical management.
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Affiliation(s)
- Kaylon L. Bruner-Tran
- Women's Reproductive Health Research Center, Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, TN USA 37232
| | - Jennifer L. Herington
- Women's Reproductive Health Research Center, Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, TN USA 37232
| | - Antoni J. Duleba
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of California Davis, Sacramento, California USA 95817
| | - Hugh S. Taylor
- Department of Obstetrics and Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT USA 06510
| | - Kevin G. Osteen
- Women's Reproductive Health Research Center, Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, TN USA 37232
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Modèles animaux dans la recherche expérimentale sur l’endométriose. ACTA ACUST UNITED AC 2012; 40:494-6. [DOI: 10.1016/j.gyobfe.2012.07.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 06/29/2012] [Indexed: 11/21/2022]
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Nakamura DS, Edwards AK, Virani S, Thomas R, Tayade C. Thrombospondin-1 mimetic peptide ABT-898 affects neovascularization and survival of human endometriotic lesions in a mouse model. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:570-82. [PMID: 22727957 DOI: 10.1016/j.ajpath.2012.05.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 04/04/2012] [Accepted: 05/02/2012] [Indexed: 12/25/2022]
Abstract
Endometriosis is a common cause of pelvic pain and infertility in women, and a common indication for hysterectomy, yet the disease remains poorly diagnosed and ineffectively treated. Because endometriotic lesions require new blood supply for survival, inhibiting angiogenesis could provide a novel therapeutic strategy. ABT-898 mimics the antiangiogenic properties of thrombospondin-1, so we hypothesized that ABT-898 will prevent neovascularization of human endometriotic lesions and that ABT-898 treatment will not affect reproductive outcomes in a mouse model. Endometriosis was induced in BALB/c-Rag2(-/-)Il2rg(-/-) mice by surgical implantation of human endometrial fragments in the peritoneal cavity. Mice received daily injections of ABT-898 for 21 days. Flow cytometry was performed to measure circulating endothelial progenitor cells in peripheral blood. Cytokines were measured in plasma samples. Half of the ABT-898-treated and control mice were euthanized to assess neovascularization of endometriotic lesions, using CD31(+) immunofluorescence. The remaining mice were mated and euthanized at gestation day 12. Endometriotic lesions increased circulating endothelial progenitor cells 13 days after engraftment, relative to baseline. Endometriotic lesions from ABT-898-treated mice exhibited reduced neovascularization, compared with controls, and lesions had fewer CD31(+) microvessels. Chronic treatment with ABT-898 did not lead to any fetal anomalies or affect litter size at gestation day 12, compared with controls. Our results suggest that ABT-898 inhibits neovascularization of human endometriotic lesions without affecting mouse fecundity.
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Affiliation(s)
- Diane S Nakamura
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
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Kobayashi A, Maegawa M, Yamamoto S, Ugumori N, Kasai Y, Tani A, Uemura H, Kuwahara A, Matsuzaki T, Yasui T, Furumoto H, Kamada M, Irahara M. The role of blood in early endometrial-peritoneal interactions in a syngeneic mouse model of endometriosis. Reprod Med Biol 2011; 10:15-20. [PMID: 29699078 PMCID: PMC5906943 DOI: 10.1007/s12522-010-0065-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Accepted: 08/12/2010] [Indexed: 10/19/2022] Open
Abstract
PURPOSE The aim of this study was to clarify the role of blood in the early stage of development of endometriotic lesions by developing a syngeneic transplantation model using immunocompetent mice. METHODS Endometriotic lesions were induced in C57BL/6 mice by an intraperitoneal injection of endometrial fragments plus saline or endometrial fragments plus blood. Some endometrial fragments plus blood were injected with heparin, hirudin or tissue plasminogen activator (tPA). Endometriotic lesions on days 1, 3 and 5 were evaluated by gross and microscopic findings. RESULTS The areas of endometriotic lesions in the blood group (6.4 ± 1.7 mm2) were significantly larger than those in the saline group (0.5 ± 0.3 mm2). The areas of endometriotic lesions were significantly reduced by the addition of heparin, hirudin or tPA. On day 1, endometriotic lesions in the blood group were observed on the peritoneum in five of the six mice. Endometriotic lesions on days 3 and 5 were significantly larger than those on day 1. On day 5, endometriotic lesions appeared cystic in all the mice. CONCLUSIONS Blood accelerates the early stage of development of endometriotic lesions when endometrial fragments plus blood are injected. Blood property might be involved in early endometrial-peritoneal interactions.
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Affiliation(s)
- Ayako Kobayashi
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Masahiko Maegawa
- Department of Obstetrics and GynecologyTokushima Prefectural Central Hospital1‐10‐3 Kuramoto‐cho770‐8539TokushimaJapan
| | - Satoshi Yamamoto
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Natsuyo Ugumori
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Yuka Kasai
- Department of Obstetrics and GynecologyTokushima Prefectural Central Hospital1‐10‐3 Kuramoto‐cho770‐8539TokushimaJapan
| | - Anna Tani
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Hirokazu Uemura
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Akira Kuwahara
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Toshiya Matsuzaki
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Toshiyuki Yasui
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Hiroyuki Furumoto
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
| | - Masaharu Kamada
- Department of Obstetrics and GynecologyHealth Insurance Naruto Hospital772‐8503TokushimaJapan
| | - Minoru Irahara
- Department of Obstetrics and Gynecology, Institute of Health BiosciencesThe University of Tokushima Graduate School770‐8503TokushimaJapan
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