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https://www.readbyqxmd.com/read/28074794/acute-effect-of-treatment-of-mitral-stenosis-on-left-atrium-function
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/27806783/-clinicopathological-features-of-thyroid-papillary-microcarcinoma-of-which-the-maximum-diameter-is-less-than-5-mm-a-series-of-487-cases
#9
C Chen, H Z Chen, C H Lyu, S Xue, N K Yu, X Chen
Objective: To analyze the clinical and pathological features of papillary thyroid microcarcinoma(PTMC) of which the maximum diameter is less than 5 mm. Methods: Clinical data of 487 PTMC (≤5 mm) patients who underwent primary surgery by the same team of doctors between March 2013 to March 2016 at Department of Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University were analyzed retrospectively. Female patients accounted for 77.4%(377/487). The age ranged from 22 to 80 years, with an average of (46±11) years...
November 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27793009/the-changing-characteristics-and-molecular-profiles-of-papillary-thyroid-carcinoma-over-time-a-systematic-review
#10
REVIEW
Huy Gia Vuong, Ahmed M A Altibi, Amr Hesham Abdelhamid, Phuong Uyen Duong Ngoc, Vo Duy Quan, Mohamed Yousef Tantawi, Mohamed Elfil, Tran Le Huy Vu, Ahmed Elgebaly, Naoki Oishi, Tadao Nakazawa, Kenji Hirayama, Ryohei Katoh, Nguyen Tien Huy, Tetsuo Kondo
BACKGROUND: The genetic alterations of papillary thyroid carcinoma (PTC) have been reported to change over the past few decades. We performed this systematic review to further examine the trends and modifications of patient demographic, clinicopathological features and molecular profiles of PTC over time. METHODS: A literature search was performed within six electronic databases to identify relevant articles. The inclusion criteria were published studies investigating BRAF mutations, RET/PTC rearrangements or RAS mutations in PTCs or classical PTCs...
October 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27782383/uv-cross-linkable-graphene-poly-trimethylene-carbonate-composites-for-3d-printing-of-electrically-conductive-scaffolds
#11
Sepidar Sayyar, Miina Bjorninen, Suvi Haimi, Susanna Miettinen, Kerry Gilmore, Dirk Grijpma, Gordon Wallace
Conductive, flexible graphene/poly(trimethylene carbonate) (PTMC) composites were prepared. Addition of just 3 wt % graphene to PTMC oligomers functionalized with methacrylate end-groups followed by UV cross-linking resulted in more than 100% improvement in tensile strength and enhanced electrical conductivity by orders of magnitude without altering the processability of the host material. The addition of graphene also enhanced mesenchymal stem cell (MSC) attachment and proliferation. When electrical stimulation via the composite material was applied, MSC viability was not compromised, and osteogenic markers were upregulated...
November 23, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27756889/a-meta-analysis-on-the-effect-of-operation-modes-on-the-recurrence-of-papillary-thyroid-microcarcinoma
#12
Dandan Yi, Peng Song, Tao Huang, Xiaoqiao Tang, Jianfeng Sang
Whether total thyroidectomy reduces the recurrence rate in patients with papillary thyroid microcarcinoma (PTMC) is currently controversy. Conclusions of sporadic, inconsistent, and mono-institutional studies need a meta-analysis to evaluate. 525 relevant studies were obtained from initial search on PubMed, 511 studies were excluded by inclusion and exclusion criteria. Eligible data were extracted from each included study. The Odds ratios (ORs) and 95% confidence interval (CI) were used to assess the difference in the recurrence rates between PTMC patients treated with total thyroidectomy and non-total thyroidectomy...
October 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27751337/ptmc-in-post-mv-repair-status
#13
Lachikarathman Devegowda, Prabhavathi Bhat, Cholenahally Nanjappa Manjunath, Prasanna Simha Mohan Rao
MV repair in the rheumatic population is feasible with acceptable long-term results.(1) Incidence of mitral stenosis (MS) following mitral valve (MV) repair for severe rheumatic mitral regurgitation (MR) and usefulness of percutaneous transluminal mitral valvuloplasty (PTMC) in these patients is not described in literature. We report a case of successful PTMC in severe MS following MV repair for severe rheumatic MR.
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27749574/is-papillary-thyroid-microcarcinoma-an-indolent-tumor-a-retrospective-study-on-280-cases-treated-with-radioiodine
#14
Xuemei Gao, Xiao Zhang, Yajing Zhang, Wenjuan Hua, Yusufu Maimaiti, Zairong Gao
The increasing detection of papillary thyroid microcarcinoma (PTMC) has created management dilemmas. To clarify the clinical significance of postsurgery stimulated thyroglobulin (ps-Tg) in PTMC who undergo thyroidectomy and radioactive iodine (RAI), we retrospectively reviewed the 358 PTMC patients who were treated with RAI and followed up in our hospital. Those with an excessive anti-Tg antibody, ultrasound-detected residual were excluded, thereby resulting in the inclusion of 280 cases. Their clinical and histopathological information and clinical outcomes were collected and summarized...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27698812/ultrasonic-features-of-papillary-thyroid-microcarcinoma-coexisting-with-a-thyroid-abnormality
#15
Bo Li, Yaqiong Zhang, Ping Yin, Jian Zhou, Tian'an Jiang
The present study aimed to investigate the value of ultrasonography in the diagnosis of papillary thyroid microcarcinoma (PTMC) coexisting with a thyroid abnormality, and to improve the accuracy of PTMC diagnosis. The ultrasonic features of 38 PTMC nodules coexisting with a thyroid abnormality and 56 thyroid benign nodules, obtained by surgical resection and confirmed by pathological analysis, were retrospectively analyzed. All masses were ≤ 1.0 cm in diameter. Ultrasonic features that were analyzed included the shape, aspect ratio, boundary, margin, echo, uniformity, presence or absence of microcalcification and enlargement of the lymph nodes, as well as the blood flow of the nodules...
October 2016: Oncology Letters
https://www.readbyqxmd.com/read/27645473/the-incidence-and-risk-factors-for-central-lymph-node-metastasis-in-cn0-papillary-thyroid-microcarcinoma-a-meta-analysis
#16
REVIEW
Liang-Sen Liu, Jia Liang, Jun-Hong Li, Xue Liu, Li Jiang, Jian-Xiong Long, Yue-Ming Jiang, Zhi-Xiao Wei
Although there have been many studies identifying clinical and pathologic factors that may predict central lymph node metastases (CLNM) in papillary thyroid microcarcinoma (PTMC) patients without clinically cervical lymph node metastasis (cN0), the results were inconsistent. And whether prophylactic central lymph node dissection (pCLND) should be performed in cN0 PTMC remains controversial. The EMBASE, PubMed, MEDLINE and the Cochrane Library were searched until Oct 2015 to identify relevant studies. Primary outcomes were clinical and pathologic factors for CLNM...
September 19, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27640247/opsonisation-of-nanoparticles-prepared-from-poly-%C3%AE-hydroxybutyrate-and-poly-trimethylene-carbonate-b-poly-malic-acid-amphiphilic-diblock-copolymers-impact-on-the-in-vitro-cell-uptake-by-primary-human-macrophages-and-heparg-hepatoma-cells
#17
Elise Vene, Ghislaine Barouti, Kathleen Jarnouen, Thomas Gicquel, Claudine Rauch, Catherine Ribault, Sophie M Guillaume, Sandrine Cammas-Marion, Pascal Loyer
The present work reports the investigation of the biocompatibility, opsonisation and cell uptake by human primary macrophages and HepaRG cells of nanoparticles (NPs) formulated from poly(β-malic acid)-b-poly(β-hydroxybutyrate) (PMLA-b-PHB) and poly(β-malic acid)-b-poly(trimethylene carbonate) (PMLA-b-PTMC) diblock copolymers, namely PMLA800-b-PHB7300, PMLA4500-b-PHB4400, PMLA2500-b-PTMC2800 and PMLA4300-b-PTMC1400. NPs derived from PMLA-b-PHB and PMLA-b-PTMC do not trigger lactate dehydrogenase release and do not activate the secretion of pro-inflammatory cytokines demonstrating the excellent biocompatibility of these copolymers derived nano-objects...
November 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27601922/risk-prediction-and-clinical-model-building-for-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma
#18
Dao-Zhe Lin, Ning Qu, Rong-Liang Shi, Zhong-Wu Lu, Qing-Hai Ji, Wei-Li Wu
The surgical management of papillary thyroid microcarcinoma (PTMC), especially regarding the necessity of central/lateral lymph node dissection, remains controversial. This study investigated the clinicopathologic factors predictive of lymph node metastasis (LNM) in patients diagnosed with PTMC. Multivariate logistic regression analysis was used for PTMC patients identified from the Surveillance, Epidemiology, and End Results database who were treated by surgery between 2002 and 2012, to determine the association of clinicopathologic factors with LNM...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27599271/a-mutasynthetic-library-of-platensimycin-and-platencin-analogues
#19
Liao-Bin Dong, Jeffrey D Rudolf, Ben Shen
Inactivation of ptmB1, ptmB2, ptmT2, or ptmC in Streptomyces platensis SB12029, a platensimycin (PTM) and platencin (PTN) overproducer, revealed that PTM and PTN biosynthesis features two distinct moieties that are individually constructed and convergently coupled to afford PTM and PTN. A focused library of PTM and PTN analogues was generated by mutasynthesis in the ΔptmB1 mutant S. platensis SB12032. Of the 34 aryl variants tested, 18 were incorporated with high titers.
September 16, 2016: Organic Letters
https://www.readbyqxmd.com/read/27541032/how-many-contralateral-carcinomas-in-patients-with-unilateral-papillary-thyroid-microcarcinoma-are-preoperatively-misdiagnosed-as-benign
#20
Zeng Gui Wu, Xing Qiang Yan, Ru Si Su, Zhao Sheng Ma, Bo Jian Xie, Fei Lin Cao
BACKGROUND: The decision to perform a total thyroidectomy (TT) for unilateral papillary thyroid microcarcinoma (PTMC) with nodules in the contralateral lobe remains controversial. The aim of this study was to investigate the rate of contralateral carcinomas that are preoperatively misdiagnosed as benign. METHODS: From October 2011 to October 2015, a total of 347 patients with unilateral PTMC and contralateral benign nodules who were treated with a TT at a single institution were enrolled...
January 2017: World Journal of Surgery
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