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Reproductive Imaging

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https://www.readbyqxmd.com/read/29776069/accelerating-simulation-for-the-multiple-point-statistics-algorithm-using-vector-quantization
#1
Chen Zuo, Zhibin Pan, Hao Liang
Multiple-point statistics (MPS) is a prominent algorithm to simulate categorical variables based on a sequential simulation procedure. Assuming training images (TIs) as prior conceptual models, MPS extracts patterns from TIs using a template and records their occurrences in a database. However, complex patterns increase the size of the database and require considerable time to retrieve the desired elements. In order to speed up simulation and improve simulation quality over state-of-the-art MPS methods, we propose an accelerating simulation for MPS using vector quantization (VQ), called VQ-MPS...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29763897/does-the-pituitary-gland-volume-change-in-polycystic-ovary-syndrome
#2
Sezen Bozkurt Koseoglu, Funda Dinc Elibol
AIMS: Polycystic ovary syndrome (PCOS) is the commonest cause of menstrual irregularity and hirsutism during reproductive age. We hypothesized in the alterations in the pituitary gland in PCOS. METHODS: We measured the volume of the pituitary gland in 39 PCOS patients and 42 age-matched healthy controls using 0.35 mm thick T1-weighted sagittal cranial images. Serum levels of estradiol (E2), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) were measured on days 3-5 of the menstrual cycle of the participants...
May 15, 2018: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/29757275/isolation-of-primary-human-decidual-cells-from-the-fetal-membranes-of-term-placentae
#3
Tali Farine, Michael Parsons, Stephen Lye, Oksana Shynlova
The decidua, also known as the pregnant endometrium, is a critically important reproductive tissue. Decidual cells, comprised mainly of decidualized stromal cells and immune cells, are responsible for the secretion of hormonal and inflammatory factors which are critical for successful blastocyst implantation, placental development and play a role in the initiation of labor at term and preterm. Many pregnancy complications can arise from perturbations of a fine balance of different cell populations comprising decidua...
April 30, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29755032/effects-of-mature-cystic-teratoma-on-reproductive-health-and-malignant-transformation-a-retrospective-analysis-of-80-cases
#4
Sefa Kurt, Hüseyin Aytuğ Avşar, Ömer Erbil Doğan, Hasan Bahadır Saatli, Uğur Saygılı
OBJECTIVE: Examining the cases of mature cystic teratoma (MCT) that are diagnosed and treated in our clinic regarding their association with fertility; and detecting the rate of malignant degeneration and the types of malignancies. MATERIAL AND METHODS: Patients, operated due to adnexal mass between April 2012 and August 2017 and diagnosed with MCT, were retrospectively examined. Mean age of the 80 cases, which met the criteria, was 30.60±10.5. 9 were suffering from infertility, according to hospital records...
May 14, 2018: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/29754696/follicle-stimulating-hormone-receptor-protein-is-expressed-in-ovine-uterus-during-the-estrous-cycle-and-utero-placenta-during-early-pregnancy-an-immunohistochemical-study
#5
Anna T Grazul-Bilska, Arshi Reyaz, Veselina Valkov, Sheri T Dorsam, Dale A Redmer
Follicle stimulating hormone (FSH) is a well characterized gonadotropin that controls primarily development and functions of ovarian follicles in mammalian species. FSH binds to a specific G protein-coupled receptor (FSHR) belonging to the glycoprotein hormone receptor family that plays an essential role in reproduction. Although the primary location of FSHR is in the gonads (mainly in ovarian follicles), FSHR protein and/or mRNA have also been detected in extragonadal female reproductive tissues including embryo, placenta, endometrium, cervix, ovarian cancer tissues, and/or endometriotic lesions in several species...
May 11, 2018: Acta Histochemica
https://www.readbyqxmd.com/read/29748644/live-cell-imaging-of-nuclear-chromosomal-dynamics-in-bovine-in-vitro-fertilised-embryos
#6
Tatsuma Yao, Rie Suzuki, Natsuki Furuta, Yuka Suzuki, Kyoko Kabe, Mikiko Tokoro, Atsushi Sugawara, Akira Yajima, Tomohiro Nagasawa, Satoko Matoba, Kazuo Yamagata, Satoshi Sugimura
Nuclear/chromosomal integrity is an important prerequisite for the assessment of embryo quality in artificial reproductive technology. However, lipid-rich dark cytoplasm in bovine embryos prevents its observation by visible light microscopy. We performed live-cell imaging using confocal laser microscopy that allowed long-term imaging of nuclear/chromosomal dynamics in bovine in vitro fertilised (IVF) embryos. We analysed the relationship between nuclear/chromosomal aberrations and in vitro embryonic development and morphological blastocyst quality...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29748498/single-viruses-on-the-fluorescence-microscope-imaging-molecular-mobility-interactions-and-structure-sheds-new-light-on-viral-replication
#7
REVIEW
Nagma Parveen, Doortje Borrenberghs, Susana Rocha, Jelle Hendrix
Viruses are simple agents exhibiting complex reproductive mechanisms. Decades of research have provided crucial basic insights, antiviral medication and moderately successful gene therapy trials. The most infectious viral particle is, however, not always the most abundant one in a population, questioning the utility of classic ensemble-averaging virology. Indeed, viral replication is often not particularly efficient, prone to errors or containing parallel routes. Here, we review different single-molecule sensitive fluorescence methods that we employ routinely to investigate viruses...
May 10, 2018: Viruses
https://www.readbyqxmd.com/read/29743010/an-automatic-method-to-calculate-heart-rate-from-zebrafish-larval-cardiac-videos
#8
Chia-Pin Kang, Hung-Chi Tu, Tzu-Fun Fu, Jhe-Ming Wu, Po-Hsun Chu, Darby Tien-Hao Chang
BACKGROUND: Zebrafish is a widely used model organism for studying heart development and cardiac-related pathogenesis. With the ability of surviving without a functional circulation at larval stages, strong genetic similarity between zebrafish and mammals, prolific reproduction and optically transparent embryos, zebrafish is powerful in modeling mammalian cardiac physiology and pathology as well as in large-scale high throughput screening. However, an economical and convenient tool for rapid evaluation of fish cardiac function is still in need...
May 9, 2018: BMC Bioinformatics
https://www.readbyqxmd.com/read/29733456/oxidative-damage-of-sp-d-abolishes-control-of-eosinophil-extracellular-dna-trap-formation
#9
Shida Yousefi, Satish K Sharma, Darko Stojkov, Nina Germic, Salome Aeschlimann, Moyar Q Ge, Cameron H Flayer, Erik D Larson, Imre G Redai, Suhong Zhang, Cynthia J Koziol-White, Katalin Karikó, Hans-Uwe Simon, Angela Haczku
The asthmatic airways are highly susceptible to inflammatory injury by air pollutants such as ozone (O3 ), characterized by enhanced activation of eosinophilic granulocytes and a failure of immune protective mechanisms. Eosinophil activation during asthma exacerbation contributes to the proinflammatory oxidative stress by high levels of nitric oxide (NO) production and extracellular DNA release. Surfactant protein-D (SP-D), an epithelial cell product of the airways, is a critical immune regulatory molecule with a multimeric structure susceptible to oxidative modifications...
May 7, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29732159/ultrasound-imaging-improves-hormone-therapy-strategies-for-induction-of-ovulation-and-in-vitro-fertilization-in-the-endangered-dusky-gopher-frog-lithobates-sevosa
#10
Katherine M Graham, Cecilia J Langhorne, Carrie K Vance, Scott T Willard, Andrew J Kouba
Establishing captive breeding populations of amphibians is an important conservation strategy to safeguard against ongoing declines of wild populations and provide broodstock for reintroduction programs. The endangered dusky gopher frog (DGF) has never naturally reproduced in captivity and requires breeding intervention to sustain the population. Methods for inducing ovulation in female DGFs using hormone therapies have not been evaluated. To address this need, we tested four exogenous hormone treatments to induce ovulation in DGFs ( n = 11/treatment), including: treatment (A) gonadotropin-releasing hormone agonist (GnRHa); (B) GnRHa with dopamine antagonist metoclopramide hydrochloride; (C) GnRHa and human chorionic gonadotropin (hCG) and (D) GnRHa with hCG following two low hCG priming doses...
2018: Conservation Physiology
https://www.readbyqxmd.com/read/29726650/-advances-in-the-studies-of-testicular-microlithiasis
#11
REVIEW
Qing-Lai Tang, Yu-Tian Dai
With the increased attention to men's health and development of ultrasound imaging technology, clinicians are achieving a better understanding of testicular microlithiasis. This review presents an overview on recent studies of the etiology, pathogenesis, and imaging characteristics of testicular microlithiasis, its impact on male reproductive function, and its relation ship with testis tumors and other related diseases, as well as its treatment strategies and follow-up proposals, aiming to provide some new evidence for further understanding and management of the disease...
August 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29724419/acr-appropriateness-criteria-%C3%A2-radiologic-management-of-uterine-leiomyomas
#12
M-Grace Knuttinen, Gregory Stark, Eric J Hohenwalter, Linda D Bradley, Aaron R Braun, Matthew G Gipson, Charles Y Kim, Jason W Pinchot, Matthew J Scheidt, David M Sella, Clifford R Weiss, Jonathan M Lorenz
Uterine fibroids, also known as leiomyomas, are the most common benign tumor in women of reproductive age. When symptomatic, these patients can present with bleeding and/or bulk-related symptoms. Treatment options for symptomatic uterine leiomyomas include medical management, minimally invasive treatment such as uterine artery embolization, and surgical options, such as myomectomy. It is important to understand the role of these treatment options in various clinical scenarios so that appropriate consultation is performed...
May 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29723645/a-novel-treatment-for-cervical-and-cesarean-section-scar-pregnancies-by-transvaginal-injection-of-absolute-ethanol-to-trophoblasts-its-efficacy-in-19-cases
#13
Hisao Osada, Shokichi Teramoto, Hirotsune Kaijima, Tomoya Segawa, Osamu Miyauchi, Masaji Nagaishi, Makio Shozu, Keiichi Kato, Victor Gomel
STUDY OBJECTIVE: To evaluate the efficacy of a non-surgical treatment for cervical pregnancies (CP) and cesarean section scar pregnancies (CSP) DESIGN: Canadian Task Force Classification III SETTING: Private assisted reproductive technology practice PATIENTS: Nineteen women with CP (16 cases) or CSP (3 cases), including 6 patients with positive fetal heartbeat INTERVENTION: Transvaginal local injection of absolute ethanol (AE) into the hyperechoic ring (lacunar space) around the gestational sac under ultrasound guidance MEASUREMENTS AND MAIN RESULTS: Serum beta-human chorionic gonadotropin (β-hCG) was measured at frequent intervals, and ultrasound and/or magnetic resonance imaging was used to observe the gestational sac...
April 30, 2018: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29722938/-diagnosis-and-treatment-of-ejaculatory-duct-obstruction-current-status-and-advances
#14
REVIEW
Zheng Li, Xiang-Ping Li, Hui-Xing Chen
Ejaculatory duct obstruction (EDO) is one of the obstructive factors for 1-5% of all cases of male infertility and it is, however, surgically correctable. Congenital developmental abnormality is a most common cause of EDO. The clinical manifestations of EDO are varied, typically with the decline of four semen parameters. Transrectal ultrasonography is an important imaging method for the diagnosis of EDO and guidance in its surgery. MRI provides high-resolution images of the reproductive system as evidence...
June 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29714292/image-quality-degradation-of-object-color-metamer-mismatching-in-digital-camera-color-reproduction
#15
Jueqin Qiu, Haisong Xu, Zhengnan Ye, Changyu Diao
Metamer mismatching is a phenomenon where two objects that are colorimetrically indistinguishable under one lighting condition become distinguishable under another one. Due to the unavailability of spectral information, metamer mismatching introduces an inherent uncertainty into cameras' color reproduction. To investigate the degree of image quality degradation by the metamer mismatching, a large spectral reflectance database was compiled in this study to search the object-color metamers sets of the spectra in hyperspectral images...
April 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29709413/the-radiocapitellar-synovial-fold-a-lateral-anatomic-landmark-for-sizing-radial-head-arthroplasty
#16
Alexander J Lampley, Jacob W Brubacher, Travis J Dekker, Marc J Richard, Grant E Garrigues
BACKGROUND: Successful radial head arthroplasty relies on reproduction of anatomy. We hypothesized that the radiocapitellar synovial fold could serve as a reference point in radial head prosthesis sizing. Our study aimed to define the relationship between the synovial fold and the radial head in elbows with and without lateral ulnar collateral ligament (LUCL) injury. MATERIALS AND METHODS: We performed magnetic resonance imaging evaluation of 34 elbows to determine the normal relationship between the radiocapitellar synovial fold and the radial head...
April 27, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29701376/what-about-having-a-hydropneumothorax-every-month
#17
Sara Lopes, João Maciel, Pedro Cabral Bastos, Paulo Pinho
INTRODUCTION: Endometriosis is a pathological, benign, inflammatory condition characterized by the presence of endometrial glands and stroma outside the uterine cavity, typically in the pelvis. In rare conditions, this estrogen-dependent disease may be extrapelvic, presenting with a variety of symptoms, including Thoracic Endometriosis. METHODS: A 37 year-old woman presented with her third right hydropneumothorax in three months. Her medical history included infertility, an ovarian mass (in study), biliary diskinesia and protein C deficiency...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29694619/functional-magnetic-resonance-imaging-for-clinical-evaluation-of-uterine-contractility
#18
Vinicius Adami Vayego Fornazari, Stela Adami Vayego, Denis Szejnfeld, Jacob Szejnfeld, Suzan Menasce Goldman
Uterine contractility out of the gestational phase, during the menstrual cycle and the habitual functional variations of the organ, this is one of the responsible mechanisms for reproduction and fertility, due to its direct action in the mechanisms conducting the spermatozoa to the ovule and in the decidual implantation. Pathologies such as uterine leiomyoma, endometriosis, adenomyosis, polycystic ovarian syndrome, as well as the use of intrauterine devices and oral contraceptives, may alter a functionality of uterine contractility...
2018: Einstein
https://www.readbyqxmd.com/read/29676911/oniom-investigation-of-the-second-order-nonlinear-optical-responses-of-fluorescent-proteins
#19
Marc de Wergifosse, Edith Botek, Evelien De Meulenaere, Koen Clays, Benoît Champagne
The first hyperpolarizability ( ) of six fluorescent proteins (FPs), namely eGFP, eYFP, SHardonnay, ZsYellow, DsRed, and mCherry, has been calculated to unravel structure-property relationships on their second-order nonlinear optical properties, owing to their potential for multidimensional biomedical imaging. The ONIOM scheme has been employed and several of its refinements have been addressed to incorporate efficiently the effects of the microenvironment on the nonlinear optical responses of the FP chromophore that is embedded in a protective -barrel protein cage...
April 20, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29670782/endometriosis-in-a-man-as-a-rare-source-of-abdominal-pain-a-case-report-and-review-of-the-literature
#20
Christina Rei, Thomas Williams, Michael Feloney
Endometriosis occurs when a tissue resembling endometrial glands and stroma grows in ectopic sites, commonly causing infertility and pain. This condition is most often seen in women of reproductive age, involving pelvic sites such as the ovaries, broad ligaments, uterosacral ligaments, and posterior cul-de-sac. Very rarely, endometriosis has also been found in the lower genitourinary tract of men. A 40-year-old man presented to his primary care physician with abdominal pain. Further imaging discovered a midline mass...
2018: Case Reports in Obstetrics and Gynecology
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