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https://www.readbyqxmd.com/read/29226566/probing-the-importance-of-clonality-single-cell-subcloning-of-clonally-derived-cho-cell-lines-yields-widely-diverse-clones-differing-in-growth-productivity-and-product-quality
#1
Peggy Ko, Shahram Misaghi, Zhilan Hu, Dejin Zhan, Joni Tsukuda, Mandy Yim, Mark Sanford, David Shaw, Masaru Shiratori, Brad Snedecor, Michael Laird, Amy Shen
In the past few decades, a large variety of therapeutic antibodies and proteins have been expressed in Chinese hamster ovary (CHO) cells. This mammalian expression system is robust, scalable, relatively inexpensive, and importantly allows for post-translational modifications that are important for some therapeutic proteins. Historically, CHO cell lines were derived from colonies of cells grown in semi-solid or liquid plates using either serum-containing or serum-free media. Current advancements in cell sorting and imaging technologies have allowed for isolating and imaging single cell progenitors at the seeding step, significantly increasing the probability of isolating clonally-derived cell lines...
December 11, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/29225758/an-in-vitro-transcription-assay-for-development-of-rotavirus-vp7
#2
Shahram Jalilian, Ali Teimoori, Manoochehr Makvandi, Milad Zandi
Background and Objectives: Human rotavirus (RV) is responsible for most cases of acute gastroenteritis in infants, worldwide. Today, in vitro transcription (IVT) assay is widely used to develop efficient RNA for the biological experiments such as gene function analysis and reverse genetics. The aim of this study was to develop optimal full-length transcripts of the VP7 segment, using in vitro transcription assay. Materials and Methods: Special primers were designed in order to synthesize VP7 sequence of sense RNA in the process of IVT using T7 RNA polymerase...
June 2017: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/29225746/comparison-of-the-impact-of-applications-of-targeted-transfusion-protocol-and-massive-transfusion-protocol-in-trauma-patients
#3
Shahram Paydar, Hosseinali Khalili, Golnar Sabetian, Behnam Dalfardi, Shahram Bolandparvaz, Mohammad Hadi Niakan, Hamidreza Abbasi, Donat R Spahn
Background: The current study assessed a recently developed resuscitation protocol for bleeding trauma patients called the Targeted Transfusion Protocol (TTP) and compared its results with those of the standard Massive Transfusion Protocol (MTP). Methods: Per capita utilization of blood products such as packed red blood cells (RBCs), fresh frozen plasma (FFP), and platelet concentrates was compared along with mortality rates during two 6-month periods, one in 2011 (when the standard MTP was followed) and another in 2014 (when the TTP was used)...
December 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29225613/a-multitasking-electrical-impedance-tomography-system-using-titanium-alloy-electrode
#4
Abdalla Salama, Amin Malekmohammadi, Shahram Mohanna, Rajprasad Rajkumar
This paper presents a multitasking electrical impedance tomography (EIT) system designed to improve the flexibility and durability of an existing EIT system. The ability of the present EIT system to detect, locate, and reshape objects was evaluated by four different experiments. The results of the study show that the system can detect and locate an object with a diameter as small as 1.5 mm in a testing tank with a diameter of 134 mm. Moreover, the results demonstrate the ability of the current system to reconstruct an image of several dielectric object shapes...
2017: International Journal of Biomedical Imaging
https://www.readbyqxmd.com/read/29223784/thalidomide-attenuates-development-of-morphine-dependence-in-mice-by-inhibiting-pi3k-akt-and-nitric-oxide-signaling-pathways
#5
Muhammad Imran Khan, Majid Momeny, Sattar Ostadhadi, Samane Jahanabadi, Shahram Ejtemaee-Mehr, Bilqees Sameem, Ghazaleh Zarrinrad, Ahmad Reza Dehpour
Morphine dependence and the subsequent withdrawal syndrome restrict its clinical use in management of chronic pain. The precise mechanism for the development of dependence is still elusive. Thalidomide is a glutamic acid derivative, recently has been reconsidered for its clinical use due to elucidation of different clinical effects. Phosphoinositide 3-kinase (PI3K) is an intracellular transducer enzyme which activates Akt which in turns increases the level of nitric oxide. It is well established that elevated levels of nitric oxide has a pivotal role in the development of morphine dependence...
December 6, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29215873/novel-multi-component-synthesis-of-pyridine-pyrimidines-and-their-bis-derivatives-catalyzed-by-triazine-diphosphonium-hydrogen-sulfate-ionic-liquid-supported-on-functionalized-nano-silica
#6
Fahime Rahmani, Iraj Mohammadpoor-Baltork, Ahmad Reza Khosropour, Majid Moghadam, Shahram Tangestaninejad, Valiollah Mirkhani
In this article, we report an efficient synthesis of 1,3-dimethyl-5-aryl-7-(pyridine-3(2)(4)-yl)pyrimidine-2,4(1H,3H)-diones via a three-component reaction of aryl aldehydes, 1,3-dimethyl-6-aminouracil and carbonitriles in the presences of triazine diphosphonium hydrogen sulfate ionic liquid supported on functionalized nano-silica (APTADPHS-nSiO2) as a reusable catalyst under microwave irradiation and solvent-free conditions. The bis-derivatives of pyridine-pyrimidines were also efficiently prepared from dialdehydes and dinitriles...
December 7, 2017: ACS Combinatorial Science
https://www.readbyqxmd.com/read/29214873/a-highly-sensitive-mir-195-nanobiosensor-for-early-detection-of-parkinson-s-disease
#7
Zahra Aghili, Navid Nasirizadeh, Adeleh Divsalar, Shahram Shoeibi, Parichehreh Yaghmaei
Early detection of Parkinson's disease (PD), as a dangerous neurodegenerative disease, is a key factor in the therapy or prevention of further development of this disease. We developed an electrochemical nanobiosensor for early detection of PD based on the quantification of circulating biomarker, miR-195. Exfoliated graphene oxide (EGO) and gold nanowires (GNWs) were used to modify the surface of screen-printed carbon electrode. A single-strand thiolated probe was designed for specific hybridization with target miRNA (miR-195), and doxorubicin was used as an electrochemical indicator for differential pulse voltammetry measurements...
December 7, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29209937/sugar-based-collagen-membrane-cross-linking-increases-barrier-capacity-of-membranes
#8
Po-Ju Chia-Lai, Anna Orlowska, Sarah Al-Maawi, Andre Dias, Yunxin Zhang, Xuejiu Wang, Niklas Zender, Robert Sader, C James Kirkpatrick, Shahram Ghanaati
OBJECTIVES: This study examines the permeability and barrier capacity of a sugar cross-linked resorbable collagen membrane ex vivo and in vivo. MATERIALS AND METHODS: In an ex vivo study, injectable platelet-rich fibrin (i-PRF), a peripheral blood-derived human leukocyte-and-platelet-rich plasma was used to analyze membrane permeability. in vivo subcutaneous implantation in Wistar rats (n = 4 per time point and group) was used to investigate the barrier capacity of the membrane...
December 6, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29209661/origami-lattices-with-free-form-surface-ornaments
#9
Shahram Janbaz, Niels Noordzij, Dwisetya S Widyaratih, Cornelis W Hagen, Lidy E Fratila-Apachitei, Amir A Zadpoor
Lattice structures are used in the design of metamaterials to achieve unusual physical, mechanical, or biological properties. The properties of such metamaterials result from the topology of the lattice structures, which are usually three-dimensionally (3D) printed. To incorporate advanced functionalities into metamaterials, the surface of the lattice structures may need to be ornamented with functionality-inducing features, such as nanopatterns or electronic devices. Given our limited access to the internal surfaces of lattice structures, free-form ornamentation is currently impossible...
November 2017: Science Advances
https://www.readbyqxmd.com/read/29207829/evaluation-of-tumour-associated-macrophages-and-angiogenesis-in-ameloblastoma
#10
Akinyele O Adisa, Samuel E Udeabor, Anna Orlowska, Robert A Sader, Shahram Ghanaati
Introduction: Ameloblastoma is a locally invasive odontogenic neoplasm that has a high recurrence rate. The invasion of adjacent tissue is supported by angiogenesis stimulated by Tumour-Associated Macrophages (TAMs). TAMs are macrophages modified in the milieu of the tumour microenvironment and have very weak or no ability to present antigens. Thus, there is collaboration between the tumour and the tumour microenvironment to maintain tumour enlargement. TAMs exist as the classically activated M1 macrophages that possess antitumour activity and the otherwise activated M2 macrophages that support tumour invasion and metastasis...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29201974/the-risk-factors-in-early-failure-of-dental-implants-a-retrospective-study
#11
Hassan Mohajerani, Roozbeh Roozbayani, Shahram Taherian, Reza Tabrizi
Statement of the Problem: Despite the low failure rate of dental implants, recognition of the risk factors can enhance the predictability of failure. Purpose: The aim of this study was to evaluate the risk factors for early implant failure. Materials and Method: This retrospective cohort study was conducted on two groups of patients, the patients with a failed implant before loading and those without a failed implant. Age, gender, implant type, implant surface, implant length, bone type, type of surgery (one- or two-stage) and immediate (fresh socket) or delayed placement of implant were the variables to be assessed in this study...
December 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29201314/serum-albumin-level-as-an-indicator-of-response-to-hepatitis-b-vaccination-in-dialysis-patients-a-systematic-review-and-meta-analysis
#12
REVIEW
Mohammad Ebrahim Ghamar-Chehreh, Shahram Agah, Hossein Khedmat, Aghdas Aghaei, Seyed-Moayed Alavian
Background: Hepatitis B (HB) vaccination is a recommended procedure in all dialysis patients, but its efficacy has not been perfect. In the current study, we aimed to conduct a comprehensive review of the literature to find and pool data of the randomized trials evaluating the impact of serum albumin levels on the immunogenicity of HB vaccination in dialysis patients. Methods: Literature searches were conducted by the Medline and Google Scholar. The key words used included 'Hepatitis B', 'Vaccine', 'Dialysis', 'Hemodialysis', and 'Albumin'...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29201093/simultaneous-determination-of-residue-from-58-pesticides-in-the-wheat-flour-consumed-in-tehran-iran-by-gc-ms
#13
Mohammad Rezaei, Nabi Shariatifar, Shahram Shoeibi, Maryam Amir Ahmadi, Gholamreza Jahed Khaniki
Food safety has a direct impact on human health and as such is a growing concern worldwide. Presence of harmful pesticide residue in food is a serious cause for concern among consumers so it is important to monitor levels of pesticides in foods. The aim of this study was simultaneous determination of concentrations of 58 pesticides in 40 wheat flour samples collected from Tehran market in January, 2014. The city under study (Tehran) was divided into five districts and samples were collected independently from each district and sourced from different bakeries (n=40)...
2017: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/29201067/hereditary-vitamin-d-resistant-rickets-clinical-laboratory-and-genetic-characteristics-of-2-iranian-siblings
#14
Ali A Ghazi, Azita Zadeh-Vakili, Marjan Zarif Yeganeh, Shahram Alamdari, Atieh Amouzegar, Ali Akbar Khorsandi, Alireza Amirbaigloo, Fereidoun Azizi
Purpose and Methods: Hereditary vitamin D resistant rickets (HVDRR) is a rare disease that presents with signs and symptoms of rickets, alopecia, and growth retardation during the early years of life. The disease is caused by mutations in the vitamin D receptor (VDR) gene, which leads to unresponsiveness of the mutant receptor to 1-25(OH) 2 D3. The disease is transmitted as an autosomal recessive disorder and is found with equal frequency in males and females. The disease is rarely encountered and only about 100 cases are reported so far...
July 2017: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29196813/sense-encoded-poly-gr-dipeptide-repeat-proteins-correlate-to-neurodegeneration-and-uniquely-co-localize-with-tdp-43-in-dendrites-of-repeat-expanded-c9orf72-amyotrophic-lateral-sclerosis
#15
Shahram Saberi, Jennifer E Stauffer, Jie Jiang, Sandra Diaz Garcia, Amy E Taylor, Derek Schulte, Takuya Ohkubo, Cheyenne L Schloffman, Marcus Maldonado, Michael Baughn, Maria J Rodriguez, Don Pizzo, Don Cleveland, John Ravits
Hexanucleotide repeat expansions in C9orf72 are the most common genetic cause of amyotrophic lateral sclerosis (C9 ALS). The main hypothesized pathogenic mechanisms are C9orf72 haploinsufficiency and/or toxicity from one or more of bi-directionally transcribed repeat RNAs and their dipeptide repeat proteins (DPRs) poly-GP, poly-GA, poly-GR, poly-PR and poly-PA. Recently, nuclear import and/or export defects especially caused by arginine-containing poly-GR or poly-PR have been proposed as significant contributors to pathogenesis based on disease models...
December 1, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/29194677/chronic-inflammatory-demyelinating-polyneuropathy-and-malignancy-a-systematic-review
#16
REVIEW
Yusuf A Rajabally, Shahram Attarian
A systematic review of the literature was performed on the association of chronic inflammatory demyelinating polyneuropathy (CIDP) with malignancy. Hematologic disorders are the most common association, particulalry non-Hodgkin's lymphoma. CIDP frequently precedes the malignancy diagnosis, and there is a favorable CIDP response to treatment more than 70% of the time. Melanoma is the second most common association, and may be accompanied by antiganglioside antibodies; the CIDP shows a good response to immunotherapy...
December 1, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/29191736/immunogenicity-of-vibrio-cholerae-outer-membrane-vesicles-secreted-at-various-environmental-conditions
#17
Rezaei Adriani, Seyed Latif Mousavi Gargari, Shahram Nazarian, Samaneh Sarvary, Nafiseh Noroozi
Cholera is caused by toxigenic Vibrio cholerae. It is a significant health problem and an important cause of mortality of children in developing countries. Annually, about 5-7 million people are being infected worldwide, leading to death of 100,000 to 120,000. Immunization using the currently available cholera vaccines has been recommended by World Health Organization (WHO) in areas where cholera is endemic or at risk of outbreaks. Gram-negative bacteria secrete outer membrane vesicles (OMVs) that play important roles in virulence and host-pathogen interaction...
November 27, 2017: Vaccine
https://www.readbyqxmd.com/read/29187170/correction-to-the-cedar-project-using-indigenous-specific-determinants-of-health-to-predict-substance-use-among-young-pregnant-involved-indigenous-women-in-canada
#18
Sana Z Shahram, Joan L Bottorff, Nelly D Oelke, Leanne Dahlgren, Victoria Thomas, Patricia M Spittal
After publication of the original article (1) it was noted that the title of this manuscript was incorrect. The title presently reads "The cedar project: using indigenous-specific determinants of health to predict substance use among young pregnant-involved aboriginal women" but should read "The Cedar Project: Using Indigenous-specific determinants of health to predict substance use among young pregnant-involved Indigenous women in Canada".
November 29, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/29184833/comparison-of-coronal-leakage-in-tooth-preparation-with-two-single-file-systems-and-three-obturation-techniques
#19
Eshaghali Saberi, Shahram Shahraki Zahedani, Sediqe Ebrahimipour, Neda Valian
Aims and Objectives: Root canal preparation and obturation are of great importance in endodontics. Its purpose is to eliminate pulpal and periradicular disease. The aim of this study was to compare coronal bacterial microleakage in prepared root canals using Neoniti A1 and Reciproc files that obturated with lateral compaction, single cone gutta-percha, and hybrid (tapered cone/lateral compaction) methods. Materials and Methods: In this ex vivo study, a total of 110 single-rooted mandibular first premolars were choose and randomly divided into two study groups A and B (each 45) that one group was prepared with Reciproc and another with Neoniti A1 and negative and positive control groups (each 10)...
October 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29182914/detection-of-proximal-conduction-blocks-using-a-triple-stimulation-technique-improves-the-early-diagnosis-of-guillain-barr%C3%A3-syndrome
#20
Amandine Sevy, Aude-Marie Grapperon, Emmanuelle Salort Campana, Emilien Delmont, Shahram Attarian
OBJECTIVE: Current diagnostic electrophysiological criteria can miss the early stages of Guillain-Barré syndrome (GBS). We evaluated the diagnostic efficiency of the triple stimulation technique (TST) in highlighting proximal conduction blocks (CBs) in patients who do not meet the electrophysiological criteria for GBS. METHODS: All patients with a diagnosis of clinical GBS referred to our center between September 2014 and January 2016 were included in the study...
November 11, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
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