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https://www.readbyqxmd.com/read/28735124/inherent-tumor-characteristics-that-limit-effective-and-safe-resection-of-giant-nonfunctioning-pituitary-adenomas
#1
Hiroshi Nishioka, Takayuki Hara, Yuichi Nagata, Noriaki Fukuhara, Mitsuo Yamaguchi-Okada, Shozo Yamada
BACKGROUND: Surgical treatment of giant pituitary adenomas is sometimes challenging. We present our surgical series of giant nonfunctioning adenomas to shed light on the limitations of effective and safe tumor resection. METHODS: The preoperative tumor characteristics, surgical approaches, outcome, and histology of giant nonfunctioning adenoma (>40 mm) in 128 consecutive surgical patients are reviewed. The follow-up period ranged from 19 to 113 (mean 62.2) months...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28730479/analysis-of-drug-resistance-using-kinome-wide-functional-screens
#2
Katherine R Singleton, Keith T Earley, Lynn E Heasley
The clinical success of tyrosine kinase inhibitors specific for BCR-ABL-, EGFR-, ALK-, and ROS1-driven cancers continues to spur the quest to match specific oncogene-defined tumor types with an appropriate molecularly targeted therapy. Unfortunately, responses to these agents are not durable with intrinsic or acquired resistance limiting benefit. Additionally, efforts to identify the appropriate targets of new drugs have focused on nonfunctional assays such as large-scale sequencing for somatic mutations or analysis of gene copy number...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28726516/targeting-nsg-mice-engrafting-cells-with-a-clinically-applicable-lentiviral-vector-corrects-osteoclasts-in-infantile-malignant-osteopetrosis
#3
Ilana Moscatelli, Henrik Löfvall, Christian Schneider Thudium, Michael Rothe, Carmen Montano, Zsuzsanna Kertész, Mehtap Sirin, Ansgar Schulz, Axel Schambach, Kim Henriksen, Johan Richter
Infantile malignant osteopetrosis (IMO) is a rare, lethal, autosomal recessive disorder characterized by nonfunctional osteoclasts. More than 50% of the patients have mutations in the TCIRG1 gene, encoding for a subunit of the osteoclast proton pump. The aim of this study was to develop a clinically applicable lentiviral vector expressing TCIRG1 to correct osteoclast function in IMO. We compared two mammalian promoters: elongation factor 1α short promoter (EFS) and chimeric myeloid promoter (ChimP). EFS was chosen for continued experiments as it performed better...
July 20, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28723242/interspecific-and-intraspecific-hybrid-epichlo%C3%A3-species-symbiotic-with-the-north-american-native-grass-poa-alsodes
#4
Tatsiana Shymanovich, Nikki D Charlton, Ashleigh M Musso, Jonathan Scheerer, Nadja B Cech, Stanley H Faeth, Carolyn A Young
The endophyte presence and diversity in natural populations of Poa alsodes were evaluated along a latitudinal transect from the southern distribution range in North Carolina to New York. Two distinct Epichloë hybrid taxa were identified from 23 populations. Each taxon could easily be distinguished by polymerase chain reaction (PCR) genotyping with primers designed to mating type genes and alkaloid biosynthesis genes that encode key pathway steps for ergot alkaloids, indole-diterpenes, lolines, and peramine...
June 26, 2017: Mycologia
https://www.readbyqxmd.com/read/28723135/development-of-dual-aptamers-for-constructing-sandwich-type-pancreatic-polypeptide-assay
#5
Shiya Qin, Nandi Chen, Xiaohai Yang, Qing Wang, Kemin Wang, Jin Huang, Jianbo Liu, Maogui Zhou
Pancreatic polypeptide (PP) is a specific biomarker of nonfunctional pancreatic neuroendocrine tumors (NF-pNETs). Clinical significance of PP inspires researchers to make great efforts in developing sensitive and specific sensors. However, there is no existing biosensor for detecting PP that combines facility and functionality. Addressing this challenge, a pair of aptamers which could be used to develop a sandwich assay for PP is reported. First, several high affinity aptamers are screened through graphene oxide-based SELEX, and appropriate dual-aptamers which could bind to different epitopes of PP are identified through fluorescence assays...
February 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28720734/lack-of-acrb-efflux-function-confers-loss-of-virulence-on-salmonella-enterica-serovar-typhimurium
#6
Xuan Wang-Kan, Jessica M A Blair, Barbara Chirullo, Jonathan Betts, Roberto M La Ragione, Alasdair Ivens, Vito Ricci, Timothy J Opperman, Laura J V Piddock
AcrAB-TolC is the paradigm resistance-nodulation-division (RND) multidrug resistance efflux system in Gram-negative bacteria, with AcrB being the pump protein in this complex. We constructed a nonfunctional AcrB mutant by replacing D408, a highly conserved residue essential for proton translocation. Western blotting confirmed that the AcrB D408A mutant had the same native level of expression of AcrB as the parental strain. The mutant had no growth deficiencies in rich or minimal medium. However, compared with wild-type SL1344, the mutant had increased accumulation of Hoechst 33342 dye and decreased efflux of ethidium bromide and was multidrug hypersusceptible...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28719461/serotonin-atrx-and-daxx-expression-in-pituitary-adenomas-markers-in-the-differential-diagnosis-of-neuroendocrine-tumors-of-the-sellar-region
#7
Olivera Casar-Borota, Johan Botling, Dan Granberg, Jerker Stigare, Johan Wikström, Henning Bünsow Boldt, Bjarne Winther Kristensen, Fredrik Pontén, Jacqueline Trouillas
Differential diagnosis based on morphology and immunohistochemistry between a clinically nonfunctioning pituitary neuroendocrine tumor (NET)/pituitary adenoma and a primary or secondary NET of nonpituitary origin in the sellar region may be difficult. Serotonin, a frequently expressed marker in the NETs, has not been systematically evaluated in pituitary NETs. Although mutations in ATRX or DAXX have been reported in a significant proportion of pancreatic NETs, the mutational status of ATRX and DAXX and their possible pathogenetic role in pituitary NETs are unknown...
July 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28715310/discovering-ways-to-mend-growing-bodies-the-bioengineering-of-devices-for-the-youngest-patients-brings-unique-challenges-and-rewards
#8
David L Chandler
Some babies are born with a rare condition known as esophageal atresia, in which part of the connection between the throat and stomach is missing or nonfunctional. While this was once untreatable and fatal, in recent years surgeons have developed a method using traction to stretch the tissues out on each end until, over time, they are long enough to be sewn together and so substitute for the missing portion of the esophagus. The procedure has allowed many infant patients to go home with a full, normal life ahead of them...
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28708920/complications-and-clinical-considerations-of-the-implant-retained-zirconia-complete-arch-prosthesis-with-various-opposing-dentitions
#9
Jorge Gonzalez, Robert G Triplett
PURPOSE: To evaluate the performance of the implant-retained zirconia complete-arch prosthesis with various opposing dentitions. MATERIALS AND METHODS: The 40 patients included in this retrospective case series study were treated with one or two implant-retained zirconia complete-arch prostheses (ZIRCAP) using the Zirkonzahn protocol. Prettau zirconia frames were created with strategic cutbacks in the structure to extend zirconia incisal coverage of the esthetic anterior sextants and complete monolithic zirconia in the molar areas; subsequent layers of porcelain were applied to nonfunctional and esthetic areas...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28707420/transthoracic-intracardiac-catheters-in-pediatric-cardiac-patients-a-single-center-experience
#10
Kristoffer Beham, Hitendu Dave, Janet Kelly, Bernhard Frey, Maja I Hug, Barbara Brotschi
BACKGROUND: Transthoracic intracardiac catheters are frequently inserted in children during congenital heart surgery for monitoring and vascular access purposes. Their use entails a small potential risk. AIM: We aimed to evaluate both catheter-associated morbidities related to maintenance and removal of transthoracic intracardiac catheters in pediatric cardiac patients, and predictors for catheter-associated adverse events. METHODS: Single-center retrospective cohort study of prospectively collected data of children aged 0-14 years receiving a transthoracic intracardiac catheter inserted in the operating room during 7 consecutive years at the University Children's Hospital Zurich...
July 14, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28706793/medial-meniscus-posterior-root-repair-using-a-transtibial-technique
#11
Jarret M Woodmass, Rohith Mohan, Michael J Stuart, Aaron J Krych
The meniscal roots are critical in maintaining the normal shock absorbing function of the meniscus. If a meniscal root tear is left untreated, meniscal extrusion can occur rendering the meniscus nonfunctional resulting in degenerative arthritis. Two main repair techniques are described: (1) suture anchors (direct fixation) and (2) sutures pulled through a tibial tunnel (indirect fixation). Meniscal root repair using a suture anchor technique is technically challenging requiring a posterior portal and a curved suture passing device that can be difficult to manipulate within the knee...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28705792/deletion-of-fstl1-follistatin-like-1-from-the-endocardial-endothelial-lineage-causes-mitral-valve-disease
#12
Stuti Prakash, Luis J J Borreguero, Marc Sylva, Lorena Flores Ruiz, Fereshte Rezai, Quinn D Gunst, José-Luis de la Pompa, Jan M Ruijter, Maurice J B van den Hoff
OBJECTIVE: Fstl1 (Follistatin-like 1) is a secreted protein that is expressed in the atrioventricular valves throughout embryonic development, postnatal maturation, and adulthood. In this study, we investigated the loss of Fstl1 in the endocardium/endothelium and their derived cells. APPROACH AND RESULTS: We conditionally ablated Fstl1 from the endocardial lineage using a transgenic Tie2-Cre mouse model. These mice showed a sustained Bmp and Tgfβ signaling after birth...
July 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28702053/etiology-of-hypopituitarism-in-adult-patients-the-experience-of-a-single-center-database-in-the-serbian-population
#13
M Doknić, S Pekić, D Miljić, I Soldatović, V Popović, M Stojanović, M Petakov
There are only a few published studies related to the population-based etiology of hypopituitarism. New risks for developing hypopituitarism have been recognized in the last 10 years. Aim. To present data regarding the etiology of hypopituitarism collected in a tertiary center over the last decade. This is a cross-sectional database study. Patients and Methods. We included 512 patients (pts) with hypopituitarism, with a mean age of 45.9 ± 1.7 yrs (range: 18-82; male: 57.9%). Results. Nonfunctional pituitary adenomas were presented in 205 pts (40...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28697130/regional-metastatic-behavior-of-nonfunctional-pancreatic-neuroendocrine-tumors-impact-of-lymph-node-positivity-on-survival
#14
Zeljka Jutric, Jan Grendar, Helena M Hoen, Sung W Cho, Maria A Cassera, Pippa H Newell, Chet W Hammill, Paul D Hansen, Ronald F Wolf
OBJECTIVES: Literature addressing the significance of lymph node positivity in the management of nonfunctional pancreatic neuroendocrine tumors (PNETs) is conflicting. METHODS: The National Cancer Data Base was queried for patients who underwent surgical resection of nonfunctional PNETs between 1998 and 2011. Clinical data and overall survival were analyzed using χ and Cox proportional hazards regression. Multiple imputation was used as a comparative analysis because of the high number of patients missing data on tumor grade...
August 2017: Pancreas
https://www.readbyqxmd.com/read/28687023/adrenalectomy-for-incidentaloma-lessons-learned-from-a-single-centre-series-of-274-patients
#15
Sébastien Gaujoux, Adeline Aimé, Guillaume Assié, Roberto Ciuni, Stéphane Bonnet, Florence Tenenbaum, Jérome Bertherat, Bertrand Dousset
BACKGROUND: Adrenal incidentalomas are increasingly diagnosed and include a wide spectrum of lesions from benign adenomas to secreting or malignant lesions. The aim of the present study is to report a large single-institution experience of patients undergoing surgery for adrenal incidentaloma with particular attention to their diagnosis and post-operative course and the evolution of surgical practice over time. METHODS: From 1993 to 2013, 274 patients underwent adrenalectomy for incidentaloma...
July 7, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28684922/emerging-use-of-everolimus-in-the-treatment-of-neuroendocrine-tumors
#16
REVIEW
Pablo Gajate, Olga Martínez-Sáez, Teresa Alonso-Gordoa, Enrique Grande
Neuroendocrine tumors (NETs) consist of a diverse family of malignancies, which are derived from neuroendocrine cells, most commonly originating from the gastroenteropancreatic (GEP) tract or the bronchopulmonary system. In general, NETs are more indolent than epithelial tumors, with median survival rates of longer than 30 months. The upregulation of mTOR pathway has been shown to play a pivotal role in NET pathogenesis. Inhibition of mTOR protein with everolimus represents a progress in the treatment of advanced NETs...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28683576/womb-transplants-with-live-births-an-update-and-the-future
#17
Mats Brännström
Absolute uterine factor infertility, with a uterine absence or presence of a nonfunctional uterus, has during the last decades been the only remaining, major group of female infertility. Uterus transplantation (UTx) has now emerged as the first therapy for these women that have traditionally been regarded as unconditionally infertile. Areas covered: This review summarizes the research preparations in several experimental animal species that paved the way for the clinical introduction of UTx. The article also describes the human UTx attempts that have been reported up until today and the several live births that have occurred after the initial UTx baby was born in 2014...
July 6, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28682910/nonfunctional-pancreatic-neuroendocrine-tumor-masked-as-anemia-a-case-report
#18
Baojin Xu, Yue Wang, Xiaoyan Li, Jie Lin
After a series of clinical relevant examinations. The patient was dignosed as pancreatic tomor in the pancreatic tail accompanied with the symptom of anenmia and dizziness.Until now surgery is the best treatment strategy for pancreatic tumors.So we take a joint multiple organ removal surgery.Before surgery, the main concerns of patient is whether the operation can relieve the anemia-related symptoms and improve the quality of life.The patient was dignosed as nonfunctional pancreatic neuroendocrine tumor.A joint multiple organ removal surgery including pancreaticbody and tail, spleen, part of the stomach wall, left adrenal gland,and portal splenic vein thrombosis and lymphadenectomy were performed on this patient...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28682728/improved-quality-of-life-after-transtibial-amputation-in-patients-with-diabetes-related-foot-complications
#19
Dane K Wukich, Junho Ahn, Katherine M Raspovic, Javier La Fontaine, Larry A Lavery
The purpose of this study was to evaluate health-related quality of life after major lower-extremity amputation in a cohort of patients with diabetes mellitus. We evaluated 81 patients with diabetes and transtibial amputation (TTA) who had a minimum of 1 year of follow-up. Of these 81 patients, 50.6% completed the Short Form Survey (SF-36) and the Foot and Ankle Ability Measure (FAAM) preoperatively and postoperatively. Outcome measures before and after TTA were compared using Welch's ANOVA for continuous variables and Fisher's exact test for categorical variables...
June 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28681158/sporadic-small-%C3%A2-20%C3%A2-mm-nonfunctioning-pancreatic-neuroendocrine-neoplasm-is-the-risk-of-malignancy-negligible-when-adopting-a-more-conservative-strategy-a-systematic-review-and-meta-analysis
#20
Claudio Ricci, Riccardo Casadei, Giovanni Taffurelli, Carlo Alberto Pacilio, Davide Campana, Valentina Ambrosini, Santini Donatella, Francesco Minni
BACKGROUND: The management of small (≤20 mm), nonfunctioning pancreatic neuroendocrine neoplasms (pNENs) remains under debate. The European Neuroendocrine Tumor Society guidelines advocate the possibility of a conservative approach. METHODS: A systematic literature search was conducted to identify all studies comparing the risk of malignancy in small pNENs with respect to large ones (>20 mm). Malignancy was defined based on the presence of nodal metastases...
July 5, 2017: Annals of Surgical Oncology
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