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Vagina and (biomechanical or mechanical or tensile)

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https://www.readbyqxmd.com/read/28888700/surgical-repair-of-rectovaginal-fistula-using-the-modified-martius-procedure-a-step-by-step-guide
#1
Dan Wang, Juan Chen, Lan Zhu, Mingchen Sang, Fan Yu, Qing Zhou
STUDY OBJECTIVE: to demonstrate the surgical repair of rectovaginal fistula by the modified Martius procedure. DESIGN: step by step presentation of the procedure using video. SETTING: Rectovaginal fistula (RVF) is abnormal epithelialized connections between the vagina and rectum. Causes of rectovaginal fistula include obstetrical trauma, Crohn disease, pelvic irradiation and postsurgical complications. Many surgical interventions have been developed, from laparoscopic technique to muscle transposition and even rectal resection...
September 6, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28854585/sperm-chemorepulsion-a-supplementary-mechanism-to-regulate-fertilization
#2
H A Guidobaldi, M Cubilla, A Moreno, M V Molino, L Bahamondes, L C Giojalas
STUDY QUESTION: Are human spermatozoa able of chemorepulsive behaviour? SUMMARY ANSWER: Capacitated human spermatozoa are able to be chemorepelled by synthetic Progesterone Receptor Ligands (sPRL, known as contraceptives) and zinc (a cation released by the oocyte upon fertilization). WHAT IS KNOWN ALREADY: Moving cells can be oriented towards or against a molecular gradient, processes called chemoattraction and chemorepulsion, respectively, which have been described in unicellular organisms such as amoebas and bacteria, to organismic cells such macrophages and developmental cells...
August 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28827141/estetrol-a-fetal-selective-estrogen-receptor-modulator-acts-on-the-vagina-of-mice-through-nuclear-er%C3%AE-activation
#3
Thibaut Benoit, Marie-Cecile Valera, Coralie Fontaine, Melissa Buscato, Francoise Lenfant, Isabelle Raymond-Letron, Florence Tremollieres, Michel Soulie, Jean-Michel Foidart, Xavier Game, Jean-Francois Arnal
The genito-urinary syndrome of menopause has a negative impact on quality of life of postmenopausal women. The treatment of vulvo-vaginal atrophy (VVA) includes administration of estrogens. However, oral estrogen treatment is controversial due to its potential risks on venous thrombosis and breast cancer. Estetrol (E4) is a natural estrogen synthesized exclusively during pregnancy by the human fetal liver and initially considered as a weak estrogen. However, E4 was recently evaluated in a phase I-II clinical studies and found to act as an oral contraceptive in combination with a progestin, without increasing the level of coagulation factors...
August 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28822242/mucosal-immunity-of-the-postpartum-bovine-genital-tract
#4
REVIEW
Dinesh Dadarwal, Colin Palmer, Philip Griebel
In this review, mucosal immune defense mechanisms used to control infections in the bovine genital tract (vestibule, vagina, cervix, uterus and oviduct) during the postpartum period are reviewed. Knowledge gaps are highlighted to emphasize the need for further investigations. Physical barriers to the entry of microbes include vulvar sealing, vestibule-vaginal constriction, a narrow cervical opening and the mucosal epithelium along with the overlying mucus layer. Genital tract mucosal epithelial cells recognize damage-associated molecular patterns and pathogen-associated molecular patterns and respond by secreting antimicrobial peptides and cytokines to recruit and activate immune cells...
August 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/28815558/sequence-variants-in-esr1-and-oxtr-are-associated-with-mayer-rokitansky-k%C3%A3-ster-hauser-syndrome
#5
Sara Yvonne Brucker, Liliane Frank, Simone Eisenbeis, Melanie Henes, Diethelm Wallwiener, Olaf Riess, Barbara Van Eijck, Dorit Schöller, Michael Bonin, Kristin Katharina Rall
INTRODUCTION: Mayer-Rokitansky-Küster-Hauser syndrome (MRKHS) is characterized by congenital absence of the uterus and the upper two-thirds of the vagina in otherwise phenotypically normal females. It is found isolated or associated with renal, skeletal and other malformations. Despite of ongoing research, the etiology is mainly unknown. For a long time, the hypothesis of deficient hormone receptors as cause for MRKHS exists, and is supported by previous findings of our group. The aim of the present study was to identify unknown genetic causes for MRKHS and to compare them with data banks including a review of the literature...
August 16, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28804623/recent-advances-in-the-molecular-mechanisms-of-mayer-rokitansky-k%C3%A3-ster-hauser-syndrome
#6
Keiko Watanabe, Yusuke Kobayashi, Kouji Banno, Yusuke Matoba, Haruko Kunitomi, Kanako Nakamura, Masataka Adachi, Kiyoko Umene, Iori Kisu, Eiichiro Tominaga, Daisuke Aoki
Mayer-Rokitansky-Küster-Hauser syndrome (MRKHS) is a disease caused by congenital absence of the uterus and two-thirds of the upper vagina. The pathogenic mechanism of MRKHS may involve gene abnormalities, and there are various case reports associating MRKHS with the Wnt family member 4 (Wnt4) mutation. Analysis of genes mapped to regions in which deletion and duplication are frequently detected in patients with MRKHS has shown involvement of LIM homeobox 1 (LHX1), HNF1 homeobox B (HNF1B) and T-box 6 (TBX6)...
August 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28782658/patterns-of-treatment-of-accidental-genital-trauma-in-girls
#7
Tazim Dowlut-McElroy, Jeanette Higgins, Karen B Williams, Julie L Strickland
STUDY OBJECTIVE: To evaluate the characteristics of girls with accidental genital trauma (AGT) who can be managed in the emergency department (ED) versus the operating suite (OS). DESIGN: Retrospective cohort. SETTING: ED at a children's hospital in a metropolitan area. PARTICIPANTS: Girls aged 0 to 18 years with AGT. MAIN OUTCOME MEASURES: Factors associated with need for evaluation and repair of AGT in the OS...
August 3, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28763709/similar-mechanisms-of-traumatic-rectal-injuries-in-patients-who-had-anal-sex-with-animals-to-those-who-were-butt-fisted-by-human-sexual-partner
#8
Damian Jacob Sendler
Sexual pleasure comes in various forms of physical play, for many it involves stimulation of the vagina, while the anus for others; some enjoy both. A recent report by Cappelletti et al.(1) shows a meta-analysis of cases describing anal trauma due to sexual fisting in human partners. This clinical article reports four cases of males diagnosed with zoophilia, and who received anal sex from animals, resulting in injuries. Surgical and psychiatric evaluations are summarized. Unusual etiology of sexual activity with animals caused peri-anal trauma in men who engaged in anal sex with dogs and farm animals...
July 25, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28728862/seminal-plasma-proteins-modify-the-distribution-of-sperm-subpopulations-in-cryopreserved-semen-of-rams-with-lesser-fertility
#9
Alba Ledesma, Lucía Zalazar, Estela Fernández-Alegre, Federico Hozbor, Andreina Cesari, Felipe Martínez-Pastor
Any physiological mechanism involved in sperm selection and semen improvement has effects on heterogeneous sperm populations. This is mainly due to the fact that sperm populations within a single ejaculate have considerable heterogeneity for many variables, such as motility which is meaningful in terms of understanding how some sperm cells possess fertility advantages as compared with other cells. In the present research, initially there was a multivariate and clustering analysis used to assess sperm motility data from cryopreserved ram semen to identify subpopulations and compare the distribution of these clusters between rams with lesser and greater fertility...
June 27, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28709803/an-ocular-commensal-protects-against-corneal-infection-by-driving-an-interleukin-17-response-from-mucosal-%C3%AE-%C3%AE-t-cells
#10
Anthony J St Leger, Jigar V Desai, Rebecca A Drummond, Abirami Kugadas, Fatimah Almaghrabi, Phyllis Silver, Kumarkrishna Raychaudhuri, Mihaela Gadjeva, Yoichiro Iwakura, Michail S Lionakis, Rachel R Caspi
Mucosal sites such as the intestine, oral cavity, nasopharynx, and vagina all have associated commensal flora. The surface of the eye is also a mucosal site, but proof of a living, resident ocular microbiome remains elusive. Here, we used a mouse model of ocular surface disease to reveal that commensals were present in the ocular mucosa and had functional immunological consequences. We isolated one such candidate commensal, Corynebacterium mastitidis, and showed that this organism elicited a commensal-specific interleukin-17 response from γδ T cells in the ocular mucosa that was central to local immunity...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28708510/changes-in-localization-and-density-of-cd63-positive-exosome-like-substances-in-the-hen-oviduct-with-artificial-insemination-and-their-effect-on-sperm-viability
#11
A Huang, N Isobe, Y Yoshimura
Avian sperm are stored in the sperm storage tubules (SSTs) of the hen oviduct for a prolonged period. However, the precise mechanisms by which sperm are kept alive in the SSTs are still not fully understood. The aim of this study was to determine whether exosomes are secreted by SST cells and play a role in the survival of sperm. Utero-vaginal junction (UVJ) tissue from approximately 50 wk old White Leghorn hens was collected before (control group) and after intravaginal insemination with seminal plasma (SP group) or semen (AI group)...
June 29, 2017: Theriogenology
https://www.readbyqxmd.com/read/28700439/genital-rhabdomyoma-of-the-lower-female-genital-tract-a-study-of-12-cases-with-molecular-cytogenetic-findings
#12
J Kenneth Schoolmeester, Deyin Xing, Gary L Keeney, William R Sukov
Of the subtypes of extracardiac rhabdomyoma, genital rhabdomyoma is most uncommon and is occasionally classified as fetal rhabdomyoma due to morphologic similarities. In contrast to other forms of rhabdomyoma, the genetic alterations of genital rhabdomyoma are unknown. The clinical and pathologic findings in 12 cases were reviewed and 2 cases were processed for whole genome copy number analysis by single nucleotide polymorphism microarray. Twelve patients ranged in age from 43 to 65 yr (mean: 50.2 yr). Nine tumors arose in the vagina and 3 in the cervix, with their greatest dimension spanning 0...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28696484/vaginal-changes-due-to-varying-degrees-of-rectocele-prolapse-a-computational-study
#13
Arnab Chanda, Isuzu Meyer, Holly E Richter, Mark E Lockhart, Fabia R D Moraes, Vinu U Unnikrishnan
Pelvic organ prolapse (POP), downward descent of the pelvic organs resulting in a protrusion of the vagina, is a highly prevalent condition, responsible for 300,000 surgeries in the United States annually. Rectocele, a posterior vaginal wall prolapse of the rectum is the second most common type of POP after cystocele. A rectocele usually manifests itself along with other types of prolapse with multi-compartment pelvic floor defects. To date, the specific mechanics of rectocele formation are poorly understood, which does not allow its early stage detection and progression prediction over time...
July 11, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28667298/evolution-of-gene-expression-in-the-uterine-cervix-related-to-steroid-signaling-conserved-features-in-the-regulation-of-cervical-ripening
#14
Günter P Wagner, Mauris C Nnamani, Arun Rajendra Chavan, Jamie Maziarz, Stella Protopapas, Jennifer Condon, Roberto Romero
The uterine cervix is the boundary structure between the uterus and the vagina and is key for the maintenance of pregnancy and timing of parturition. Here we report on a comparative transcriptomic study of the cervix of four placental mammals, mouse, guinea pig, rabbit and armadillo, and one marsupial, opossum. Our aim is to investigate the evolution of cervical gene expression as related to putative mechanisms for functional progesterone withdrawal. Our findings are: 1) The patterns of gene expression in eutherian (placental) mammals are consistent with the notion that an increase in the E/P4 signaling ratio is critical for cervical ripening...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28621044/haemophilus-influenzae-vulvovaginitis-associated-with-rhinitis-caused-by-the-same-clone-in-a-prepubertal-girl
#15
Xiao Chen, Lifeng Chen, Wenjie Zeng, Xiaofeng Zhao
Vulvovaginitis caused by upper respiratory flora is generally considered to be the most common gynecological problem in prepubertal girls. To date, however, no direct evidence has been obtained for the underlying mechanism of transmission. This report describes a case of non-capsulate Haemophilus influenzae vulvovaginitis in a 6-year-old girl with a history of foreign bodies (cotton wool) in her vagina. Moreover, this girl had recurrent rhinitis for approximately 3 years. On Pulsed Field Gel Electrophoresis (PFGE) analysis the H...
June 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28620304/pu-erh-tea-extract-ameliorates-ovariectomy-induced-osteoporosis-in-rats-and-suppresses-osteoclastogenesis-in-vitro
#16
Titi Liu, Shihua Ding, Dan Yin, Xiangdan Cuan, Chuanqi Xie, Huanhuan Xu, Xuanjun Wang, Jun Sheng
Background and Objective: Tea drinking is associated with positive effects on bone health and may protect against osteoporosis, especially in elderly women. Pu-erh tea has many beneficial effects on human health; however, whether Pu-erh tea has anti-osteoporotic potential remains unclear. Thus, we investigated the effects of Pu-erh tea extract (PTE) on ovariectomy-induced osteoporosis in rats and on osteoclastogenesis in vitro. Methods: Female Wistar rats were divided into six groups: the sham, model, and Xian-Ling-Gu-Bao capsule (XLGB) groups, and the low-, medium-, and high-dose PTE groups...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28614296/selective-depletion-of-uropathogenic-e-coli-from-the-gut-by-a-fimh-antagonist
#17
Caitlin N Spaulding, Roger D Klein, Ségolène Ruer, Andrew L Kau, Henry L Schreiber, Zachary T Cusumano, Karen W Dodson, Jerome S Pinkner, Daved H Fremont, James W Janetka, Han Remaut, Jeffrey I Gordon, Scott J Hultgren
Urinary tract infections (UTIs) caused by uropathogenic Escherichia coli (UPEC) affect 150 million people annually. Despite effective antibiotic therapy, 30-50% of patients experience recurrent UTIs. In addition, the growing prevalence of UPEC that are resistant to last-line antibiotic treatments, and more recently to carbapenems and colistin, make UTI a prime example of the antibiotic-resistance crisis and emphasize the need for new approaches to treat and prevent bacterial infections. UPEC strains establish reservoirs in the gut from which they are shed in the faeces, and can colonize the periurethral area or vagina and subsequently ascend through the urethra to the urinary tract, where they cause UTIs...
June 22, 2017: Nature
https://www.readbyqxmd.com/read/28599153/effects-of-repeated-biaxial-loads-on-the-creep-properties-of-cardinal-ligaments
#18
Adwoa Baah-Dwomoh, Raffaella De Vita
The cardinal ligament (CL) is one of the major pelvic ligaments providing structural support to the vagina/cervix/uterus complex. This ligament has been studied mainly with regards to its important function in the treatment of different diseases such as surgical repair for pelvic organ prolapse and radical hysterectomy for cervical cancer. However, the mechanical properties of the CL have not been fully determined, despite the important in vivo supportive role of this ligament within the pelvic floor. To advance our limited knowledge about the elastic and viscoelastic properties of the CL, we conducted three consecutive planar equi-biaxial tests on CL specimens isolated from swine...
October 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28554813/impact-of-exopolysaccharides-epss-of-lactobacillus-gasseri-strains-isolated-from-human-vagina-on-cervical-tumor-cells-hela
#19
Tolga Sungur, Belma Aslim, Cagtay Karaaslan, Busra Aktas
Lactobacilli, commonly used as probiotics, have been shown to maintain vaginal health and contribute to host microbiota interaction. Exopolysaccharides (EPSs) produced by lactobacillus have been found to have an important role in probiotic activity; however, there is limited knowledge concerning their impact on cervical cancer and urogenital health. The objective of this study is to investigate and compare EPSs of L. gasseri strains (G10 and H15), isolated from a healthy human vagina, for their capability to inhibit cervical cancer cell (HeLa) growth and modulate immune response...
May 26, 2017: Anaerobe
https://www.readbyqxmd.com/read/28523400/long-term-effect-of-thermoablative-fractional-co2-laser-treatment-as-a-novel-approach-to-urinary-incontinence-management-in-women-with-genitourinary-syndrome-of-menopause
#20
Pablo González Isaza, Kinga Jaguszewska, Jose Luis Cardona, Mariusz Lukaszuk
INTRODUCTION AND HYPOTHESIS: The aim of this study was to evaluate the long-term effect of thermoablative fractional CO2 laser (TACO2L) as an alternative treatment for early stages of stress urinary incontinence (SUI) in postmenopausal women with genitourinary syndrome of menopause. METHODS: A total of 161 postmenopausal patients (age 53.38 ± 5.1 years, range 45-65 years) with a clinical diagnosis of mild SUI were prospectively enrolled in the study. Patients received one treatment with TACO2L every 30-45 days, each treatment comprising four sessions, followed in all patients by a yearly treatment session at 12, 24 and 36 months...
May 18, 2017: International Urogynecology Journal
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