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https://www.readbyqxmd.com/read/28631963/tumor-penetrating-peptide-integrated-thermally-sensitive-liposomal-doxorubicin-enhances-efficacy-of-radiofrequency-ablation-in-liver-tumors
#1
Fei Yan, Song Wang, Wei Yang, S Nahum Goldberg, Hao Wu, Wan-Lu Duan, Zhi-Ting Deng, Hai-Bo Han, Hai-Rong Zheng
Purpose To investigate the role of a tumor-penetrating peptide (internalizing CRGDRGPDC [iRGD])-integrated thermally sensitive liposomal (TSL) doxorubicin (DOX) in combination with radiofrequency (RF) ablation of liver tumors in an animal model. Materials and Methods Approval from the institutional animal care and use committee was obtained. Characterization of iRGD-TSL-DOX was performed in vitro. Next, H22 liver adenocarcinomas were implanted in 138 mice in vivo. The DOX accumulation and cell apoptosis of iRGD-TSL-DOX and TSL-DOX with or without RF were evaluated (n = 5) at different time points after treatment with quantitative analysis or pathologic staining...
June 19, 2017: Radiology
https://www.readbyqxmd.com/read/28617960/low-prevalence-of-igg-antibodies-against-antigens-of-hev-genotypes-1-and-3-in-women-with-a-high-risk-pregnancy
#2
Baptista-González Héctor, Trueba-Gómez Rocío, Rosenfeld-Mann Fanny, Roque-Álvarez Elsa, Méndez-Sánchez Nahúm
INTRODUCTION: The aim of the study was to assess whether high-risk pregnant women have a higher prevalence of HEV during the perinatal period. MATERIAL AND METHODS: This was a cross-sectional study of 428 patients: Group 1, 127 women with a high-risk pregnancy; Group 2, 97 asymptomatic people with reactivity to HCV or HBV; Group 3, 94 patients with clinical symptoms suggestive of HEV infection; and Group 4, 110 healthy blood donors from an urban area of Mexico City...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28611269/the-role-of-tips-in-patients-with-refractory-ascites-and-portal-vein-thrombosis
#3
Paulina Chinchilla-López, Nashla Hamdan-Pérez, Jorge Guerrero-Ixtlahuac, Beatriz Barranco-Fragoso, Nahum Méndez-Sánchez
Nowadays the contraindication for Transjugular intrahepatic portosystemic shunt (TIPS) in patients with portal vein thrombosis (PVT) had been modify. The experience and technology have reduce the complications for this procedure. We report a case of refractory ascites and portal vein thrombosis to emphasize the role of TIPS in the treatment for this condition.
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28611259/prevalence-risk-factors-and-survival-of-patients-with-intrahepatic-cholangiocarcinoma
#4
Paulina Chinchilla-López, Nancy Aguilar-Olivos, Jaime García-Gómez, Karen Hernández-Alejandro, Fredy Chablé-Montero, Daniel Motola-Kuba, Tushar Patel, Nahum Mendez-Sánchez
PURPOSE: To investigate the prevalence, related risk factors, and survival of intrahepatic cholangiocarcinoma in a Mexican population. MATERIAL AND METHODS: We conducted a cross-sectional study at Medica Sur Hospital in Mexico City with approval of the local research ethics committee. We found cases by reviewing all clinical records of in-patients between October 2005 and January 2016 who had been diagnosed with malignant liver tumors. Clinical characteristics and comorbidities were obtained to evaluate the probable risk factors and the Charlson index...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28601962/patient-specific-image-denoising-for-ultra-low-dose-ct-guided-lung-biopsies
#5
Michael Green, Edith M Marom, Eli Konen, Nahum Kiryati, Arnaldo Mayer
PURPOSE: Low-dose CT screening of the lungs is becoming a reality, triggering many more CT-guided lung biopsies. During these biopsies, the patient is submitted to repeated guiding scans with substantial cumulated radiation dose. Extension of the dose reduction to the biopsy procedure is therefore necessary. We propose an image denoising algorithm that specifically addresses the setup of CT-guided lung biopsies. It minimizes radiation exposure while keeping the image quality appropriate for navigation to the target lesion...
June 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28588969/it-is-time-to-revise-the-international-good-clinical-practices-guidelines-recommendations-from-non-commercial-north-south-collaborative-trials
#6
Raffaella Ravinetto, Halidou Tinto, Ermias Diro, Joseph Okebe, Yodi Mahendradhata, Suman Rijal, Eduardo Gotuzzo, Pascal Lutumba, Alain Nahum, Katelijne De Nys, Minne Casteels, Marleen Boelaert
The Good Clinical Practices (GCP) codes of the WHO and the International Conference of Harmonization set international standards for clinical research. But critics argue that they were written without consideration for the challenges faced in low and middle income countries (LMICs). Based on our field experience in LMICs, we developed a non-exhaustive set of recommendations for the improvement of GCP. These cover 3 domains: ethical, legal and operational, and 8 specific issues: the double ethical review of 'externally sponsored' trials; the informed consent procedure in minors and in illiterate people; post-trial access to newly-developed products for the trial communities; the role of communities as key research actors; the definition of sponsor; and the guidance for contractual agreements, laboratory quality management systems, and quality assurance of investigational medicinal products...
November 2016: BMJ Global Health
https://www.readbyqxmd.com/read/28582681/translational-control-and-the-cancer-cell-response-to-stress
#7
REVIEW
Nathaniel Robichaud, Nahum Sonenberg
The evidence for the importance of aberrant translation in cancer cells is overwhelming. Reflecting the wealth of data, there are excellent reviews delineating how ribosomes and initiation factors are linked to cancer [1-3], and the therapeutic strategies being devised to target them [4]. Changes in translational efficiency can engender a malignant phenotype without the need for chromatin reorganization, transcription, splicing and mRNA export [5,6]. Thus, cancer-related modulations of the translational machinery are ideally suited to allow cancer cells to respond to the various stresses encountered along the path of tumorigenesis and organism-wide dissemination [7(•),8,9,10(•)]...
June 2, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28582601/hematologic-ris-for-healthy-water-buffaloes-bubalus-bubalis-in-southern-mexico
#8
Oswaldo M Torres-Chable, Nadia F Ojeda-Robertos, Alfonso J Chay-Canul, Jorge A Peralta-Torres, Carlos Luna-Palomera, Nahum Brindis-Vazquez, Bradley J Blitvich, Carlos Machain-Williams, Julian E Garcia-Rejon, Carlos M Baak-Baak, Karin S Dorman, Miguel A Alegria-Lopez
BACKGROUND: Baseline hematologic data are used by veterinarians and wildlife biologists to perform health assessments on target animal species. Hematologic measurements are influenced by various factors including geography. Baseline hematologic RIs have been established for domestic water buffaloes (Bubalus bubalis) from various countries in the Eastern Hemisphere, but these data are not readily available for the Western Hemisphere. OBJECTIVE: The aim of this study was to determine hematologic values for domestic water buffaloes from several commercial farms in southern Mexico...
June 5, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28544394/muscle-metabolic-alterations-induced-by-genetic-ablation-of-4e-bp1-and-4e-bp2-in-response-to-diet-induced-obesity
#9
Olivier Le Bacquer, Kristell Combe, Christophe Montaurier, Jérôme Salles, Christophe Giraudet, Véronique Patrac, Carla Domingues-Faria, Christelle Guillet, Katie Louche, Yves Boirie, Nahum Sonenberg, Cédric Moro, Stéphane Walrand
SCOPE: In recent years, several studies reported the role of eIF4E-binding proteins (4E-BPs) on the development of diet-induced obesity and insulin resistance. Our aim was to investigate the effect of 4E-BP protein deletion on lipid accumulation and metabolism in skeletal muscle in response to a high fat diet-induced obesity in 4E-BP1/2 DKO mice. METHODS AND RESULTS: Diet-induced obesity engendered increased ectopic accumulation of lipotoxic species in skeletal muscle of 4E-BP1 and 4E-BP2 double-knockout mice (4E-BP1/2 DKO), namely diacylglycerols and ceramides...
May 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28521684/the-role-of-diet-in-patients-with-metabolic-syndrome
#10
Paloma Almeda-Valdes, Roberto J Herrera-Mercadillo, Carlos A Aguilar-Salinas, Misael Uribe, Nahum Méndez-Sánchez
Metabolic syndrome is a frequent metabolic disorder characterized by obesity and insulin resistance seems to be the main pathophysiological alteration. The goal of treating metabolic syndrome is to reduce the risk of coronary heart disease and the development of type 2 diabetes. The lifestyle modification therapy combines specific recommendations on diet alone or combined with other strategies. In this review, we address the following topics: 1) the importance of the high prevalence of metabolic syndrome and obesity, and 2) the role of lifestyle modification focusing on dietary fat intake in the management of MS...
May 17, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28506839/evolutionary-relationships-among-protein-lysine-deacetylases-of-parasites-causing-neglected-diseases
#11
Larissa L S Scholte, Marina M Mourão, Fabiano Sviatopolk-Mirsky Pais, Jelena Melesina, Dina Robaa, Angela C Volpini, Wolfgang Sippl, Raymond J Pierce, Guilherme Oliveira, Laila A Nahum
The availability of the genomic data of diverse parasites provides an opportunity to identify new drug candidates against neglected tropical diseases affecting people worldwide. Histone modifying enzymes (HMEs) are potential candidates since they play key roles in the regulation of chromatin modifications, thus globally regulating gene expression. Furthermore, aberrant epigenetic states are often associated with human diseases, leading to great interest in HMEs as therapeutic targets. Our work focused on two families of protein lysine deacetylases (HDACs and sirtuins)...
May 13, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28504725/metformin-ameliorates-core-deficits-in-a-mouse-model-of-fragile-x-syndrome
#12
Ilse Gantois, Arkady Khoutorsky, Jelena Popic, Argel Aguilar-Valles, Erika Freemantle, Ruifeng Cao, Vijendra Sharma, Tine Pooters, Anmol Nagpal, Agnieszka Skalecka, Vinh T Truong, Shane Wiebe, Isabelle A Groves, Seyed Mehdi Jafarnejad, Clément Chapat, Elizabeth A McCullagh, Karine Gamache, Karim Nader, Jean-Claude Lacaille, Christos G Gkogkas, Nahum Sonenberg
Fragile X syndrome (FXS) is the leading monogenic cause of autism spectrum disorders (ASD). Trinucleotide repeat expansions in FMR1 abolish FMRP expression, leading to hyperactivation of ERK and mTOR signaling upstream of mRNA translation. Here we show that metformin, the most widely used drug for type 2 diabetes, rescues core phenotypes in Fmr1(-/y) mice and selectively normalizes ERK signaling, eIF4E phosphorylation and the expression of MMP-9. Thus, metformin is a potential FXS therapeutic.
June 2017: Nature Medicine
https://www.readbyqxmd.com/read/28487484/cap-binding-protein-4ehp-effects-translation-silencing-by-micrornas
#13
Clément Chapat, Seyed Mehdi Jafarnejad, Edna Matta-Camacho, Geoffrey G Hesketh, Idit A Gelbart, Jan Attig, Christos G Gkogkas, Tommy Alain, Noam Stern-Ginossar, Marc R Fabian, Anne-Claude Gingras, Thomas F Duchaine, Nahum Sonenberg
MicroRNAs (miRNAs) play critical roles in a broad variety of biological processes by inhibiting translation initiation and by destabilizing target mRNAs. The CCR4-NOT complex effects miRNA-mediated silencing, at least in part through interactions with 4E-T (eIF4E transporter) protein, but the precise mechanism is unknown. Here we show that the cap-binding eIF4E-homologous protein 4EHP is an integral component of the miRNA-mediated silencing machinery. We demonstrate that the cap-binding activity of 4EHP contributes to the translational silencing by miRNAs through the CCR4-NOT complex...
May 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28484016/social-propinquity-in-rodents-as-measured-by-tube-cooccupancy-differs-between-inbred-and-outbred-genotypes
#14
Alexander H Tuttle, Shannon Tansley, Kimberly Dossett, Sarasa Tohyama, Arkady Khoutorsky, Sioui Maldonado-Bouchard, Liane Stein, Lindsey Gerstein, Hayley Crawhall-Duk, Rebecca Pearl, Melissa Sukosd, Philip Leger, Oliver M Hardt, David Yachnin, Jean-Sebastien Austin, Claire M Chan, Tine Pooters, Isabelle Groves, Loren J Martin, Nahum Sonenberg, Christos G Gkogkas, Jeffrey S Mogil
Existing assays of social interaction are suboptimal, and none measures propinquity, the tendency of rodents to maintain close physical proximity. These assays are ubiquitously performed using inbred mouse strains and mutations placed on inbred genetic backgrounds. We developed the automatable tube cooccupancy test (TCOT) based on propinquity, the tendency of freely mobile rodents to maintain close physical proximity, and assessed TCOT behavior on a variety of genotypes and social and environmental conditions...
May 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28472957/safety-and-efficacy-of-the-choline-analogue-sar97276-for-malaria-treatment-results-of-two-phase-2-open-label-multicenter-trials-in-african-patients
#15
Jana Held, Christian Supan, Carmen L Ospina Salazar, Halidou Tinto, Léa Nadège Bonkian, Alain Nahum, Ali Sié, Salim Abdulla, Cathy Cantalloube, Elhadj Djeriou, Marielle Bouyou-Akotet, Bernhards Ogutu, Benjamin Mordmüller, Andrea Kreidenweiss, Mohamadou Siribie, Sodiomon B Sirima, Peter G Kremsner
BACKGROUND: Malaria remains one of the most important infectious diseases. Treatment options for severe malaria are limited and the choline analogue SAR97276A is a novel chemical entity that was developed primarily as treatment for severe malaria. Before starting clinical investigations in severely ill malaria patients, safety and efficacy of SAR97276A was studied in patients with uncomplicated malaria. Here, we summarize two open-label, multi-center phase 2 trials assessing safety and efficacy of parenterally administered SAR97276A in African adults and children with falciparum malaria...
May 4, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28459809/intraosseous-monitoring-of-drilling-in-lumbar-vertebrae-by-ultrasound-an-experimental-feasibility-study
#16
Nahum Rosenberg, Jacob Halevy-Politch
The rationale for this project is to evaluate the efficiency of a novel sonographic method for measurements of interosseous distances. The method utilizes a propagating ultrasonic beam through aqueous milieu which is directed as a jet into a drilled tract. We used a plastic model of human L5 vertebra and ex vivo specimen of L5 porcine vertebra and generated 2 mm in diameter tracts in vertebral pedicles. The tracts were created in the "desired" central direction and in the "wrong" medial and lateral directions...
2017: PloS One
https://www.readbyqxmd.com/read/28456826/comparison-of-descemet-stripping-under-continuous-air-flow-manual-air-injection-and-balanced-salt-solution-for-dmek-a-pilot-study
#17
I E Gabbay, I Bahar, Y Nahum, E Livny
BACKGROUND: Descemet's membrane endothelial keratoplasty (DMEK) involves removal of the recipient's Descemet membrane (DM) prior to transplanting the donor's DM. When using balanced salt solution (BSS) or ophthalmic viscosurgical devices (OVDs), visualization of the host's DM during its stripping may be inadequate and may result in Descemet remnants and could lead to sub-optimal surgical results. Previous articles described excellent visualization when utilizing air injection but this requires repeated air injection into the anterior chamber (AC)...
April 29, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28448551/characterization-of-physiological-defects-in-adult-sirt6-mice
#18
Victoria Peshti, Alexey Obolensky, Liat Nahum, Yariv Kanfi, Moran Rathaus, Maytal Avraham, Simon Tinman, Fredrick W Alt, Eyal Banin, Haim Y Cohen
The NAD+-dependent SIRT6 deacetylase was shown to be a major regulator of lifespan and healthspan. Mice deficient for SIRT6 develop a premature aging phenotype and metabolic defects, and die before four weeks of age. Thus, the effect of SIRT6 deficiency in adult mice is unknown. Here we show that SIRT6-/- mice in mixed 129/SvJ/BALB/c background reach adulthood, allowing examination of SIRT6-related metabolic and developmental phenotypes in adult mice. In this mixed background, at 200 days of age, more than 80% of the female knock-out mice were alive whereas only 10% of male knock-out mice survived...
2017: PloS One
https://www.readbyqxmd.com/read/28425400/the-direct-acting-antivirals-for-hepatitis-c-virus-and-the-risk-for-hepatocellular-carcinoma
#19
Paulina Chinchilla-López, Xingshun Qi, Eric M Yoshida, Nahum Méndez-Sánchez
The increase of incidences of Hepatocellular Carcinoma (HCC) will continue in the next decades. The therapies about hepatitis C infection has been questioned as a risk factor. Some authors emphasized that sustained virologic response (SVR) with interferon-based therapy reduced the risk of developing HCC. In contrast, some publications that to suggest an increasing risk of HCC in patients treated with Direct-Acting Antivirals (DAA). Whether these therapies are associated with an increased risk of HCC remains to be studied and continued long-term observational studies will be needed...
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28404542/immediate-mood-scaler-tracking-symptoms-of-depression-and-anxiety-using-a-novel-mobile-mood-scale
#20
Mor Nahum, Thomas M Van Vleet, Vikaas S Sohal, Julie J Mirzabekov, Vikram R Rao, Deanna L Wallace, Morgan B Lee, Heather Dawes, Alit Stark-Inbar, Joshua Thomas Jordan, Bruno Biagianti, Michael Merzenich, Edward F Chang
BACKGROUND: Mood disorders are dynamic disorders characterized by multimodal symptoms. Clinical assessment of symptoms is currently limited to relatively sparse, routine clinic visits, requiring retrospective recollection of symptoms present in the weeks preceding the visit. Novel advances in mobile tools now support ecological momentary assessment of mood, conducted frequently using mobile devices, outside the clinical setting. Such mood assessment may help circumvent problems associated with infrequent reporting and better characterize the dynamic presentation of mood symptoms, informing the delivery of novel treatment options...
April 12, 2017: JMIR MHealth and UHealth
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