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https://www.readbyqxmd.com/read/29244957/hypercementosis-associated-with-enpp1-mutations-and-gaci
#1
V Thumbigere-Math, A Alqadi, N I Chalmers, M B Chavez, E Y Chu, M T Collins, C R Ferreira, K FitzGerald, R I Gafni, W A Gahl, K S Hsu, M S Ramnitz, M J Somerman, S G Ziegler, B L Foster
Mineralization of bones and teeth is tightly regulated by levels of extracellular inorganic phosphate (Pi) and pyrophosphate (PPi). Three regulators that control pericellular concentrations of Pi and PPi include tissue-nonspecific alkaline phosphatase (TNAP), progressive ankylosis protein (ANK), and ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1). Inactivation of these factors results in mineralization disorders affecting teeth and their supporting structures. This study for the first time analyzed the effect of decreased PPi on dental development in individuals with generalized arterial calcification of infancy (GACI) due to loss-of-function mutations in the ENPP1 gene...
December 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29242654/comparison-of-volume-control-and-pressure-control-ventilation-in-patients-undergoing-single-level-anterior-cervical-discectomy-and-fusion-surgery
#2
Srilata Moningi, Praveen Kumar Elmati, Prasad Rao, Geetha Kanithi, Dilip Kumar Kulkarni, Gopinath Ramachandran
Background and Aims: Pressure control and volume control ventilation are the most preferred modes of ventilator techniques available in the intraoperative period. The study compared the intraoperative ventilator and blood gas variables of volume-controlled ventilation (VCV) and pressure-controlled ventilation (PCV) in patients undergoing single level anterior cervical discectomy and fusion (ACDF). Methods: After obtaining Institutional Ethical Committee approval and informed consent, sixty patients scheduled for single level ACDF surgery performed in supine position under general anaesthesia were included...
October 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29240833/vagal-nerve-stimulation-triggers-widespread-responses-and-alters-large-scale-functional-connectivity-in-the-rat-brain
#3
Jiayue Cao, Kun-Han Lu, Terry L Powley, Zhongming Liu
Vagus nerve stimulation (VNS) is a therapy for epilepsy and depression. However, its efficacy varies and its mechanism remains unclear. Prior studies have used functional magnetic resonance imaging (fMRI) to map brain activations with VNS in human brains, but have reported inconsistent findings. The source of inconsistency is likely attributable to the complex temporal characteristics of VNS-evoked fMRI responses that cannot be fully explained by simplified response models in the conventional model-based analysis for activation mapping...
2017: PloS One
https://www.readbyqxmd.com/read/29233573/re-irradiation-in-gynaecological-malignancies-a-review
#4
A H Sadozye
Re-irradiation in gynaecological malignancies has become an increasingly frequent consideration. This can be delivered in multiple settings, with the most common being a patient with a history of cervical cancer developing a new vaginal cancer or endometrial cancer with local recurrence after hysterectomy and adjuvant pelvic radiation. A systematic review of the literature has unearthed a handful of reports, most delivering brachytherapy, with a small number on both external beam radiotherapy and stereotactic ablative radiotherapy...
December 9, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29226548/diffusion-tensor-imaging-determines-three-dimensional-architecture-of-human-cervix-a-cross-sectional-study
#5
J P Nott, E Pervolaraki, A P Benson, E A Bonney, J D Pickering, N Wilkinson, Nab Simpson
OBJECTIVE: To determine the microarchitecture of the cervix using high-resolution diffusion tensor (DT) magnetic resonance imaging (MRI). DESIGN: Cross-sectional study. SETTING: Leeds, UK. SAMPLE: Women undergoing hysterectomy for benign pathology. METHODS: Ex-vivo DT-MRI measurements were obtained using a 9.4-T Bruker nuclear magnetic resonance (NMR) spectrometer on seven fixed human cervices obtained at hysterectomy...
October 26, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29223698/risk-factors-for-unsuccessful-office-based-endometrial-biopsy-a-comparative-study-of-office-based-endometrial-biopsy-pipelle-and-diagnostic-dilation-and-curettage-d-c
#6
Bingying Xie, Cuifeng Qian, Bingyi Yang, Chengcheng Ning, Xiaoying Yao, Yan Du, Yue Shi, Xuezhen Luo, Xiaojun Chen
STUDY OBJECTIVE: To determine the risk factors for Pipelle diagnostic failure, which might help health care providers to choose the appropriate protocol for endometrial evaluation individually. DESIGN: A single-center prospective study (Canadian Task Force II) SETTING: The Obstetrics and Gynecology Hospital of Fudan University PATIENTS: 466 patients with an indication for endometrial biopsy INTERVENTIONS: All patients received Pipelle and then diagnostic dilation and curettage (D&C)...
December 6, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29223302/modeling-the-target-dose-fall-off-in-imrt-and-vmat-planning-techniques-for-cervical-sbrt
#7
A Brito Delgado, D Cohen, T Y Eng, D N Stanley, Z Shi, M Charlton, A N Gutiérrez
There has been growing interest in the use of stereotactic body radiotherapy (SBRT) technique for the treatment of cervical cancer. The purpose of this study was to characterize dose distributions as well as model the target dose fall-off for intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) delivery techniques using 6 and 10 MV photon beam energies. Fifteen (n = 15) patients with non-bulky cervical tumors were planned in Pinnacle3 with a Varian Novalis Tx (HD120 MLC) using 6 and 10 MV photons with the following techniques: (1) IMRT with 10 non-coplanar beams (2) dual, coplanar 358° VMAT arcs (4° spacing), and (3) triple, non-coplanar VMAT arcs...
December 6, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/29222685/prediction-of-outcome-using-pretreatment-18f-fdg-pet-ct-and-mri-radiomics-in-locally-advanced-cervical-cancer-treated-with-chemoradiotherapy
#8
François Lucia, Dimitris Visvikis, Marie-Charlotte Desseroit, Omar Miranda, Jean-Pierre Malhaire, Philippe Robin, Olivier Pradier, Mathieu Hatt, Ulrike Schick
PURPOSE: The aim of this study is to determine if radiomics features from 18fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) and magnetic resonance imaging (MRI) images could contribute to prognoses in cervical cancer. METHODS: One hundred and two patients (69 for training and 33 for testing) with locally advanced cervical cancer (LACC) receiving chemoradiotherapy (CRT) from 08/2010 to 12/2016 were enrolled in this study. 18F-FDG PET/CT and MRI examination [T1, T2, T1C, diffusion-weighted imaging (DWI)] were performed for each patient before CRT...
December 9, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29213016/changes-in-topographical-relation-between-the-ductus-arteriosus-and-left-subclavian-artery-in-human-embryos-a-study-using-serial-sections
#9
Hiroshi Abe, Masahito Yamamoto, Ryoji Suzuki, Ming Zhou, Gen Murakami, José F Rodríguez-Vázquez
At birth, the ductus arteriosus (DA) merges with the aortic arch in the caudal side of the origin of the left subclavian artery (ltSCA). Since the SCA (seventh segmental arteries) were fixed on the levels of the seventh cervical-first thoracic vertebral bodies, the confluence of the DA should migrate caudally toward the lower level. We aimed to describe the changing topographical anatomy of the DA and SCA using serial sections. First, we examined serial sagittal sections of 11 embryos (Carnegie stage 15-18), but the specimens were clearly divided into 2 groups with and without the lower confluence of the DA...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/29207964/concordance-of-fdg-pet-ct-metabolic-tumour-volume-versus-dw-mri-functional-tumour-volume-with-t2-weighted-anatomical-tumour-volume-in-cervical-cancer
#10
Alta Y T Lai, Jose A U Perucho, Xiaopei Xu, Edward S Hui, Elaine Y P Lee
BACKGROUND: 18F-fluoro-deoxyglucose positron emission tomography with computed tomography (FDG PET/CT) has been employed to define radiotherapy targets using a threshold based on the standardised uptake value (SUV), and has been described for use in cervical cancer. The aim of this study was to evaluate the concordance between the metabolic tumour volume (MTV) measured on FDG PET/CT and the anatomical tumour volume (ATV) measured on T2-weighted magnetic resonance imaging (T2W-MRI); and compared with the functional tumour volume (FTV) measured on diffusion-weighted MRI (DW-MRI) in cervical cancer, taking the T2W-ATV as gold standard...
December 6, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29204170/locally-advanced-squamous-cell-cervical-cancer-in-a-patient-with-septate-uterus
#11
Guler Yavas, Cagdas Yavas, Gokcen Inan
A 33-year-old premenopausal multiparous woman with the history of septate uterus was referred to the hospital with menorrhagia and inter-menstrual bleeding occurring for the last 6 months. Work-up revealed a stage IIB cervical cancer. The patient underwent curative chemo/radiotherapy. The patient's septate uterus presented several difficulties during application. Brachytherapy was applied using standard computed tomography-compatible tandem and ovoids. The high-risk clinical target volume (HR-CTV), intermediate risk CTV, and organs at risk were contoured according to the Groupe Européen de Curiethérapie - European Society for Radiology and Oncology (GEC-ESTRO) guidelines...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204168/pre-plan-technique-feasibility-in-multi-interstitial-endocavitary-perineal-gynecological-brachytherapy
#12
Silvia Rodriguez, Antonio Otal, Jose Richart, Jose Perez-Calatayud, Manuel Santos
Purpose: To present the implementation of a magnetic resonance imaging (MRI) pre-planning technique in multi-interstitial perineal and endocavitary gynecological brachytherapy. Material and methods: We used a new fully MRI-compatible applicator that is capable to engage titanium needles, and an intrauterine tandem, developed in our department for the treatment of gynecological cervical cancer patients. This applicator is an attempt to combine the technical advantages of the Martinez universal perineal interstitial template (MUPIT) with the improvement in dose distribution by adding an intrauterine probe with the imaging advantages of MRI-based brachytherapy, thus preserving the stability, geometry, and robustness of the implant, avoiding possible errors of free-hand needle placement...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204165/throwing-the-dart-blind-folded-comparison-of-computed-tomography-versus-magnetic-resonance-imaging-guided-brachytherapy-for-cervical-cancer-with-regard-to-dose-received-by-the-actual-targets-and-organs-at-risk
#13
Winnie Wing Ling Yip, Joyce Siu Yu Wong, Venus Wan Yan Lee, Frank Chi Sing Wong, Stewart Yuk Tung
Purpose: Computed tomography (CT) is inferior to magnetic resonance imaging (MRI) in cervical tumor delineation, but similar in identification of organs at risk (OAR). The trend to over-estimate high-risk and low-risk clinical target volume (HRCTV, IRCTV) on CT can lead to under-estimation of dose received by 90% (D90) of the 'actual' CTV. This study aims to evaluate whether CT-guided planning delivers adequate dose to the 'actual' targets while spares the OAR similarly. Material and methods: MRI-guided high-dose-rate image-guided brachytherapy (IGBT) was performed in 11 patients...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204164/comparison-of-dose-volume-parameters-evaluated-using-three-forward-planning-optimization-techniques-in-cervical-cancer-brachytherapy-involving-two-applicators
#14
Bikramjit Chakrabarti, Somapriya Basu-Roy, Sanjay Kumar Kar, Sounik Das, Annesha Lahiri
Purpose: This study is intended to compare dose-volume parameters evaluated using different forward planning- optimization techniques, involving two applicator systems in intracavitary brachytherapy for cervical cancer. It looks for the best applicator-optimization combination to fulfill recommended dose-volume objectives in different high-dose-rate (HDR) fractionation schedules. Material and methods: We used tandem-ring and Fletcher-style tandem-ovoid applicator in same patients in two fractions of brachytherapy...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29195660/detection-of-clinically-occult-primary-tumours-in-patients-with-cervical-metastases-of-unknown-primary-tumours-comparison-of-three-dimensional-thrive-mri-two-dimensional-spin-echo-mri-and-contrast-enhanced-ct
#15
M G Yoo, J Kim, S Bae, S S Ahn, S J Ahn, Y W Koh
AIM: To evaluate and compare the utility of contrast-enhanced three-dimensional (3D) T1-weighted high-resolution isotropic volume examination (THRIVE), spin-echo (SE) T1-weighted magnetic resonance imaging (MRI), and computed tomography (CT) for detecting clinically occult primary tumours in patients with cervical lymph node metastases. MATERIALS AND METHODS: Seventy-three consecutive patients with tumours that went undetected during endoscopic or physical examinations underwent preoperative contrast-enhanced CT and MRI (SE and 3D THRIVE) after gadolinium injection...
November 28, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29193231/using-mri-cell-tracking-to-monitor-immune-cell-recruitment-in-response-to-a-peptide-based-cancer-vaccine
#16
Marie-Laurence Tremblay, Christa Davis, Chris V Bowen, Olivia Stanley, Cathryn Parsons, Genevieve Weir, Mohan Karkada, Marianne M Stanford, Kimberly D Brewer
PURPOSE: MRI cell tracking can be used to monitor immune cells involved in the immunotherapy response, providing insight into the mechanism of action, temporal progression of tumor growth, and individual potency of therapies. To evaluate whether MRI could be used to track immune cell populations in response to immunotherapy, CD8+ cytotoxic T cells, CD4+ CD25+ FoxP3+ regulatory T cells, and myeloid-derived suppressor cells were labeled with superparamagnetic iron oxide particles. METHODS: Superparamagnetic iron oxide-labeled cells were injected into mice (one cell type/mouse) implanted with a human papillomavirus-based cervical cancer model...
November 29, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29190929/whole-lesion-adc-histogram-and-texture-analysis-in-predicting-recurrence-of-cervical-cancer-treated-with-ccrt
#17
Jie Meng, Lijing Zhu, Li Zhu, Li Xie, Huanhuan Wang, Song Liu, Jing Yan, Baorui Liu, Yue Guan, Jian He, Yun Ge, Zhengyang Zhou, Xiaofeng Yang
Purpose: To explore the value of whole-lesion apparent diffusion coefficient (ADC) histogram and texture analysis in predicting tumor recurrence of advanced cervical cancer treated with concurrent chemo-radiotherapy (CCRT). Methods: 36 women with pathologically confirmed advanced cervical squamous carcinomas were enrolled in this prospective study. 3.0 T pelvic MR examinations including diffusion weighted imaging (b = 0, 800 s/mm2) were performed before CCRT (pre-CCRT) and at the end of 2nd week of CCRT (mid-CCRT)...
November 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29187888/advantage-of-pet-ct-in-target-delineation-of-mri-negative-cervical-lymph-nodes-in-intensity-modulated-radiation-therapy-planning-for-nasopharyngeal-carcinoma
#18
Guanzhu Shen, Weiwei Xiao, Fei Han, Wei Fan, Xiao-Ping Lin, Lixia Lu, Lie Zheng, Ning Yue, Bruce Haffty, Chong Zhao, Xiaowu Deng
Introduction: In intensity-modulated radiation therapy (IMRT) planning for nasopharyngeal carcinoma (NPC), cervical lymph nodes (CLNs) that appear negative on magnetic resonance imaging (MRI) scans can be difficult to target. The purpose of this study was to assess the advantage of 18F-fluorodeoxyglucose positron emission tomography with computed tomography (18F-FDG PET/CT) for distinguishing MRI-negative CLNs and the effect of 18F-FDG PET/CT on diagnosis, target delineation, and dose prescription in IMRT planning for NPC...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29186712/reproductive-hormones-and-their-receptors-may-affect-lung-cancer
#19
Mengmeng Dou, Keyan Zhu, Zhirui Fan, Yuxuan Zhang, Xiufang Chen, Xueliang Zhou, Xianfei Ding, Lifeng Li, Zhaosen Gu, Maofeng Guo, Ming Yan, Xiaoming Deng, Peihong Shen, Shuling Wang
BACKGROUND/AIMS: In contrast to men, women have experienced a rapid increase in lung cancer mortality. Numerous studies have found that the sex differences in lung cancer are due to reproductive hormones. Experiments in female mice with and without ovariectomy were performed to explore the possible mechanism by which sex hormones (and their receptors) influence lung cancer. METHODS: Twenty-four female C57BL/6 mice aged 56-62 days were randomly divided into the ovariectomized group and the control group...
November 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29186565/computed-tomography-based-image-guided-brachytherapy-for-cervical-cancer-correlations-between-dose-volume-parameters-and-clinical-outcomes
#20
Takeaki Kusada, Takafumi Toita, Takuro Ariga, Hitoshi Maemoto, Seiji Hashimoto, Hideki Shiina, Yasumasa Kakinohana, Joichi Heianna, Yutaka Nagai, Wataru Kudaka, Yoichi Aoki, Sadayuki Murayama
This study evaluated the oncologic outcomes and complications of cervical cancer patients in terms of CT-based image-guided brachytherapy (IGBT) parameters. Of 68 cervical cancer patients treated with definitive radiotherapy/concurrent chemoradiotherapy, most received whole-pelvis external beam RT (EBRT) of 40 Gy in 20 fractions, pelvic EBRT with central shield of 10 Gy in 5 fractions, and CT-based IGBT of 18 Gy in 3 fractions prescribed to point A. Cumulative EBRT and IGBT doses were calculated as the total equivalent dose in 2 Gy fractions (EQD2)...
November 23, 2017: Journal of Radiation Research
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