keyword
MENU ▼
Read by QxMD icon Read
search

ptmc

keyword
https://www.readbyqxmd.com/read/28201917/parallel-tempering-monte-carlo-combined-with-clustering-euclidean-metric-analysis-to-study-the-thermodynamic-stability-of-lennard-jones-nanoclusters
#1
Henrique M Cezar, Gustavo G Rondina, Juarez L F Da Silva
A basic requirement for an atom-level understanding of nanoclusters is the knowledge of their atomic structure. This understanding is incomplete if it does not take into account temperature effects, which play a crucial role in phase transitions and changes in the overall stability of the particles. Finite size particles present intricate potential energy surfaces, and rigorous descriptions of temperature effects are best achieved by exploiting extended ensemble algorithms, such as the Parallel Tempering Monte Carlo (PTMC)...
February 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28194993/preoperative-prediction-of-papillary-thyroid-microcarcinoma-via-multiparameter-ultrasound
#2
Hui Juan Ma, Jing Chun Yang, Zhen Peng Leng, Ying Chang, Hua Kang, Liang Hong Teng
Background Accurate diagnosis of papillary thyroid microcarcinoma (PTMC) is important for further management. Ultrasound (US) is the most frequently used imaging modality for PTMC. Purpose To evaluate the diagnostic value of conventional US, contrast-enhanced ultrasound (CEUS) and real-time elastography (RTE) for patients with PTMC. Material and Methods In total, 135 patients with subcentimeter thyroid nodules who underwent conventional US, CEUS, and RTE before surgery were enrolled. A multivariate logistic regression analysis was performed to assess the independent predictors of PTMC...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28165584/triblock-copolymers-based-on-%C3%AE%C2%B5-caprolactone-and-trimethylene-carbonate-for-the-3d-printing-of-tissue-engineering-scaffolds
#3
Aysun Güney, Jos Malda, Wouter J A Dhert, Dirk W Grijpma
BACKGROUND: Biodegradable PCL-b-PTMC-b-PCL triblock copolymers based on trimethylene carbonate (TMC) and ε-caprolactone (CL) were prepared and used in the 3D printing of tissue engineering scaffolds. Triblock copolymers of various molecular weights containing equal amounts of TMC and CL were prepared. These block copolymers combine the low glass transition temperature of amorphous PTMC (approximately -20°C) and the semi-crystallinity of PCL (glass transition approximately -60°C and melting temperature approximately 60°C)...
February 1, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28156153/should-multifocal-papillary-thyroid-carcinomas-classified-as-t1a-having-the-sum-of-tumor-diameters-1-2-centimeter-be-reclassified-as-t1b
#4
Abbas Ali Tam, Didem Ozdemir, Berna Evranos Ogmen, Sevgul Fakı, Ersin Gurkan Dumlu, Aylin Kılıc Yazgan, Reyhan Ersoy, Bekir Cakır
OBJECTIVE: Considering the diameter of the largest tumor while determining T stage in multifocal papillary thyroid microcarcinomas (PTMC) might cause underestimation of tumoral stage. We aimed to investigate the effect of total tumor diameter (TTD) on TNM classification in multifocal T1a PTMCs. METHODS: T1 tumors were grouped as T1a and T1b according to 7th TNM edition. For patients with multifocal T1a, TTD (the sum of the maximal diameter of each foci) was calculated and these patients were further subgrouped as TTD ≤1 cm and TTD 1-2 cm...
February 3, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28130621/is-male-gender-a-prognostic-factor-for-papillary-thyroid-microcarcinoma
#5
Yi Ho Lee, Yu Mi Lee, Tae Yon Sung, Jong Ho Yoon, Dong Eun Song, Tae Yong Kim, Jung Hwan Baek, Jin Suk Ryu, Ki Wook Chung, Suck Joon Hong
BACKGROUND: Male gender is a prognostic factor of poor outcome in papillary thyroid carcinoma (PTC). We investigated the prognostic role of male gender in papillary thyroid microcarcinoma (PTMC). METHODS: We included 2930 patients who underwent surgery at Asan Medical Center for PTC. Clinicopathologic characteristics from the patients' medical records were compared for male and female PTC patients. Independent prognostic factors for recurrence in PTC and PTMC were evaluated after propensity score matching analysis...
January 27, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28125992/diagnostic-accuracy-of-ultrasonographic-features-for-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma-a-single-center-retrospective-study
#6
Zeming Liu, Wen Zeng, Chunping Liu, Shuntao Wang, Yiquan Xiong, Yawen Guo, Xiaoyu Li, Shiran Sun, Tianwen Chen, Yusufu Maimaiti, Pan Yu, Tao Huang
BACKGROUND: Whether sonography is an appropriate imaging modality for cervical lymph nodes in patients with papillary thyroid microcarcinoma (PTMC) remains unclear. Hence, this study aimed to evaluate the diagnostic value of ultrasonography (US) features for lymph node metastasis in PTMC. METHODS: Seven hundred twelve patients with PTMC who underwent conventional ultrasonography examinations of the cervical lymph nodes were included. All included cases underwent total thyroidectomy plus prophylactic central lymph node dissection...
January 26, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28123728/clinicopathological-features-for-predicting-central-and-lateral-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma-analysis-of-66-cases-that-underwent-central-and-lateral-lymph-node-dissection
#7
Yang Tao, Chongjie Wang, Liye Li, Haijun Xing, Yun Bai, Bing Han, Zhiyan Liu, Xiangshan Yang, Shourong Zhu
Currently the surgical approach for papillary thyroid microcarcinoma (PTMC), particularly the range of lymph node dissection, remains controversial. The present study aims to evaluate the risk factors for central and lateral lymph node metastasis (CLNM and LLNM) for appropriate clinical decision of neck lymph node dissection in PTMC. A total of 66 cases of PTMC that underwent unilateral or bilateral lobectomy plus prophylactic cervical lymph node dissection were collected for clinicopathological evaluation, including age, gender, tumor size, subtypes, extrathyroidal invasion, multifocality, calcifications, loss of cellular polarity/cohesiveness (LOP/C) in the invasive front, CLNM and LLNM, and retrospectively analysis...
January 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28109462/can-ratio-of-the-biggest-tumor-diameter-to-total-tumor-diameter-be-a-new-parameter-in-the-differential-diagnosis-of-agressive-and-favorable-multifocal-papillary-thyroid-microcarcinoma
#8
Abbas Ali Tam, Didem Özdemir, Neslihan Çuhacı, Hüsniye Başer, Ahmet Dirikoç, Cevdet Aydın, Aylin Kılıç Yazgan, Reyhan Ersoy, Bekir Çakır
OBJECTIVES: In this study, we aimed to evaluate the usefulness of a new parameter -ratio of the biggest tumor diameter to total tumor diameter- for the differentiation of agressive and favorable papillary thyroid microcarcinomas (PTMC). MATERIALS AND METHODS: The diameter of the biggest tumor focus was taken as the primary tumor diameter. Total tumor diameter was calculated as the sum of the maximal diameter of each lesion. Ratio of primary tumor diameter to total tumor diameter was defined as tumor diameter ratio (TDR)...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28108237/poly-trimethylene-carbonate-based-composite-materials-for-reconstruction-of-critical-sized-cranial-bone-defects-in-sheep
#9
Ni Zeng, Anne C van Leeuwen, Dirk W Grijpma, Ruud R M Bos, Roel Kuijer
PURPOSE: The use of ceramic materials in repair of bone defects is limited to non-load-bearing sites. We tested poly(trimethylene carbonate) (PTMC) combined with β-tricalcium phosphate or biphasic calcium phosphate particles for reconstruction of cranial defects. MATERIALS AND METHODS: PTMC-calcium phosphate composite matrices were implanted in cranial defects in sheep for 3 and 9 months. Micro-computed tomography quantification and histological observation were performed for analysis...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28106127/-225-%C3%AE-habit-planes-in-martensitic-steels-from-the-ptmc-to-a-continuous-model
#10
Annick P Baur, Cyril Cayron, Roland E Logé
Fine twinned microstructures with {225}γ habit planes are commonly observed in martensitic steels. The present study shows that an equibalanced combination of twin-related variants associated to the Kurdjumov-Sachs orientation relationship is equivalent to the Bowles and Mackenzie's version of the PTMC for this specific {225}γ case. The distortion associated to the Kurdjumov-Sachs orientation relationship results from a continuous modeling of the FCC-BCC transformation. Thus, for the first time, an atomic path can be associated to the PTMC...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28103203/the-change-in-nt-pro-bnp-and-post-ptmc-echocardiography-parameters-in-patients-with-mitral-stenosis-a-pilot-study
#11
Morteza Safi, Fariba Bayat, Zahra Ahmadi, Masood Shekarchizadeh, Isa Khaheshi, Mohammadreza Naderian
BACKGROUND: The change in the level of NT-Pro-BNP (N-terminal Pro-Brain Natriuretic Peptide) is now considered as a reflection of the hemodynamic alterations and its circulatory reductions reported early after successful PTMC (percutaneous transvenous mitral commissurotomy). The present study aims to assess the change in the level of NT-Pro BNP following PTMC in patients with mitral stenosis and also to determine the association between circulatory NT-Pro BNP reduction and post-PTMC echocardiography parameters...
January 18, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28089996/a-comparison-of-lobectomy-and-total-thyroidectomy-in-patients-with-papillary-thyroid-microcarcinoma-a-retrospective-individual-risk-factor-matched-cohort-study
#12
COMPARATIVE STUDY
Hyemi Kwon, Min Ji Jeon, Won Gu Kim, Suyeon Park, Mijin Kim, Dong Eun Song, Tae-Yon Sung, Jong Ho Yoon, Suck Joon Hong, Tae Yong Kim, Young Kee Shong, Won Bae Kim
OBJECTIVE: Papillary thyroid microcarcinoma (PTMC) accounts for most of the increase in thyroid cancer in recent decades. We compared clinical outcomes and surgical complications of lobectomy and total thyroidectomy (TT) in PTMC patients. DESIGN AND METHODS: In this retrospective individual risk factor-matched cohort study, 2031 patients with PTMC were initially included. Patients who underwent lobectomy or TT were one-to-one matched according to individual risk factors, including age, sex, primary tumor size, extrathyroidal extension, multifocality and cervical lymph node (LN) metastasis...
April 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28074794/acute-effect-of-treatment-of-mitral-stenosis-on-left-atrium-function
#13
Atooshe Rohani, Shahram Kargar, Afsoon Fazlinejad, Fereshte Ghaderi, Vida Vakili, Homa Falsoleiman, Ramin Khamene Bagheri
AIM: Peak atrial longitudinal strain (PALS) is used to evaluate left atrium (LA) function in patients with mitral stenosis (MS), before and after percutaneous transmitral commissurotomy (PTMC) and mitral valve replacement (MVR). METHODS: Patients with severe symptomatic MS, who were referred to our echocardiographic laboratory for a diagnostic examination before cardiac surgery or PTMC from October of 2014 to October of 2015, were included in the study. RESULT: The peak systolic global LA strain improved post-PTMC (P < 0...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28052579/poly-trimethylene-carbonate-as-an-elastic-biodegradable-film-for-human-embryonic-stem-cell-derived-retinal-pigment-epithelial-cells
#14
Anni Sorkio, Suvi Haimi, Vincent Verdoold, Kati Juuti-Uusitalo, Dirk Grijpma, Heli Skottman
Human embryonic stem cell-derived retinal pigment epithelial (hESC-RPE) cell therapies show tremendous potential for the treatment of retinal degenerative diseases. A tissue engineering approach, where cells are delivered to the subretinal space on a biodegradable carrier as a sheet, shows great promise for these RPE cell therapies. The aim of the present study was to assess whether a flexible, elastic and biodegradable poly(trimethylene carbonate) (PTMC) film promotes the formation of functional hESC-RPE and performs better than often used biodegradable poly(d,l-lactide) (PDLLA) film...
January 4, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27936049/clinicopathological-features-and-prognosis-of-papillary-thyroid-microcarcinoma-for-surgery-and-relationships-with-the-brafv600e-mutational-status-and-expression-of-angiogenic-factors
#15
Chenlei Shi, Yong Guo, Yichen Lv, Abiyasi Nanding, Tiefeng Shi, Huadong Qin, Jianjun He
OBJECTIVE: To investigate the clinicopathological characteristics of papillary thyroid microcarcinoma (PTMC) for surgery by comparing the difference between PTMC and larger papillary thyroid carcinoma (LPTC). METHODS: We analyzed the differences in the clinicopathological characteristics, prognosis, B-type RAF kinase (BRAF)V600E mutational status and expression of angiogenic factors, including pigment epithelium-derived factor (PEDF), Vascular Endothelial Growth Factor (VEGF), and hypoxia-inducible factor alpha subunit (HIF-1α), between PTMC and LPTC by retrospectively reviewing the records of 251 patients with papillary thyroid carcinoma, 169 with PTMC, and 82 with LPTC (diameter >1 cm)...
2016: PloS One
https://www.readbyqxmd.com/read/27931548/percutaneous-transvenous-mitral-commissurotomy-in-mitral-stenosis-and-left-atrial-appendage-clot-patients-in-special-conditions-hospital-based-study
#16
Rajib Rajbhandari, Rabi Malla, Arun Maskey, Yadav Bhatta, Yubraj Limbu, Ranjit Sharma, Satish Singh, Chandramani Adhikari, Sundeep Mishra
BACKGROUND: The percutaneous transvenous mitral commissurotomy is an important procedure for the treatment of mitral stenosis. A lot of mitral stenosis cases have left atrial appendage clot which precludes the patient from the benefit of this procedure. The aim of the study was to study the feasibility and safety of the procedure in a patient with appendage clot in the setup of certain urgent conditions. METHOD: All cases of mitral stenosis with significant dyspnea and mitral valve area <1...
November 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27930982/targeted-osteosarcoma-chemotherapy-using-rgd-peptide-installed-doxorubicin-loaded-biodegradable-polymeric-micelle
#17
Zhenhua Fang, Yanpeng Sun, Hong Xiao, Peng Li, Ming Liu, Fan Ding, Wusheng Kan, Runsheng Miao
Osteosarcoma is the most common primary malignant bone tumor in the pediatric age group, and chemotherapy directed by targeted nanoparticulate drug delivery system represents a promising approach for osteosarcoma treatment recently. Here, we designed and developed a novel DOX-loaded targeted polymeric micelle self-assembled from RGD-terminated poly(ethylene glycol)-block-poly (trimethylene carbonate) (RGD-PEG-PTMC) amphiphilic biodegradable block copolymer, for high-efficiency targeted chemotherapy of osteosarcoma...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27925229/plga-ptmc-cultured-bone-mesenchymal-stem-cell-scaffold-enhances-cartilage-regeneration-in-tissue-engineered-tracheal-transplantation
#18
Bingyang Yan, Zhipei Zhang, Xiaoping Wang, Yunfeng Ni, Yongshi Liu, Tao Liu, Wuping Wang, Hao Xing, Ying Sun, Jian Wang, Xiao-Fei Li
The treatment of long-segment tracheal defect requires the transplantation of effective tracheal substitute, and the tissue-engineered trachea (TET) has been proposed as an ideal tracheal substitute. The major cause of the failure of segmental tracheal defect reconstruction by TET is airway collapse caused by the chondromalacia of TET cartilage. The key to maintain the TET structure is the regeneration of chondrocytes in cartilage, which can secrete plenty of cartilage matrices. To address the problem of the chondromalacia of TET cartilage, this study proposed an improved strategy...
December 7, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27853812/ultrasound-guided-percutaneous-laser-ablation-of-unifocal-t1n0m0-papillary-thyroid-microcarcinoma-preliminary-results
#19
Wei Zhou, Shan Jiang, Weiwei Zhan, Jianqiao Zhou, Shangyan Xu, Lu Zhang
OBJECTIVES: To evaluate the efficacy and safety of percutaneous laser ablation (PLA) for unifocal T1N0M0 papillary thyroid microcarcinoma(PTMC). METHODS: A retrospective study was conducted in 30 patients with single PTMC which was diagnosed by fine-needle aspiration biopsy (FNAB). PLA was performed for proper time to achieve adequate ablation zones. The extent of ablation was assessed by contrast-enhanced ultrasound (CEUS) immediately and 7 days after PLA. Complications were recorded...
November 16, 2016: European Radiology
https://www.readbyqxmd.com/read/27835583/non-invasive-diagnosis-of-papillary-thyroid-microcarcinoma-a-nmr-based-metabolomics-approach
#20
Jinghui Lu, Sanyuan Hu, Paolo Miccoli, Qingdong Zeng, Shaozhuang Liu, Lin Ran, Chunxiao Hu
Papillary thyroid microcarcinoma (PTMC) is a subtype of papillary thyroid carcinoma (PTC). Because its diameter is less than 10 mm, diagnosing it accurately is difficult with traditional methods such as image examinations and FNA (Fine Needle Aspiration). Investigating the metabolic changes induced by PTMC may enhance the understanding of its pathogenesis and provide important information for a new diagnosis method and treatment plan. In this study, high resolution magic angle spin (HRMAS) spectroscopy and 1H-nuclear magnetic resonance (1H-NMR) spectroscopy were used to screen metabolic changes in thyroid tissues and plasma from PTMC patients respectively...
November 7, 2016: Oncotarget
keyword
keyword
109109
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"