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https://www.readbyqxmd.com/read/29644247/quantification-of-torque-teno-virus-and-epstein-barr-virus-is-of-limited-value-for-predicting-the-net-state-of-immunosuppression-after-lung-transplantation
#1
Rickard Nordén, Jesper Magnusson, Anna Lundin, Ka-Wei Tang, Staffan Nilsson, Magnus Lindh, Lars-Magnus Andersson, Gerdt C Riise, Johan Westin
Background: Major hurdles for survival after lung transplantation are rejections and infectious complications. Adequate methods for monitoring immune suppression status are lacking. Here, we evaluated quantification of torque teno virus (TTV) and Epstein-Barr virus (EBV) as biomarkers for defining the net state of immunosuppression in lung-transplanted patients. Methods: This prospective single-center study included 98 patients followed for 2 years after transplantation...
April 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29587272/development-of-an-immunoassay-for-detection-of-torque-teno-virus-ttv-antibodies-using-the-n22-expression-product-from-ttv-genotype-2
#2
Dhananjay Singh Mankotia, Mohammad Irshad
AIMS: This study describes an immunoassay to detect anti-torque teno virus (TTV) antibodies using a peptide obtained from expression of the N22 region of TTV genotype 2. METHODS: The N22 region (∼500 bp) of TTV genotype 2 was cloned in a pET-28a(+) vector and expressed in ZYM-5052 autoinduction medium. Following metal affinity chromatography, a purified polypeptide was used as an antigen for the development of an immunoassay to detect anti-TTV antibodies in human sera...
March 27, 2018: Intervirology
https://www.readbyqxmd.com/read/29568043/first-detection-of-human-hepegivirus-1-hhpgv-1-in-iranian-patients-with-hemophilia
#3
Yazdan Bijvand, Mohammad Reza Aghasadeghi, Fatemeh Sakhaee, Parviz Pakzad, Farzam Vaziri, Alireza Azizi Saraji, Fatemeh Rahimi Jamnani, Seyed Davar Siadat, Abolfazl Fateh
A novel blood-borne virus called the human hepegivirus 1 (HHpgV-1) was recently discovered in hemophilia patients. The present study aimed to investigate the presence of HHpgV-1 in hemophilia patients. A total of 436 serum samples were investigated for the presence of hepatitis C virus (HCV), human pegivirus-1 (HPgV-1), torque teno virus (TTV), and HHpgV-1. Out of the 436 patients, 163 (37.4%), 19 (4.4%), 76 (17.4%), and four (0.9%) patients were positive for HCV, HPgV-1, TTV, and HHpgV-1, respectively. HHpgV-1 patients had a mean viral load of 4...
March 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29551863/detection-of-cytomegalovirus-epstein-barr-virus-and-torque-teno-virus-in-subgingival-and-atheromatous-plaques-of-cardiac-patients-with-chronic-periodontitis
#4
Sriraman Priyanka, Gurumoorthy Kaarthikeyan, Jayakumar Doraiswamy Nadathur, Anbarasu Mohanraj, Avinash Kavarthapu
Background: Periodontitis and atherosclerosis represent a chronic inflammatory process. The incidence of periodontitis in cardiac patients with atherosclerosis is a well-established fact. The role of viruses in the etiopathogenesis of both has been proposed. Aim: The aim of the study was to evaluate the prevalence of Torque Teno virus (TTV), Epstein-Barr virus (EBV), and cytomegalovirus (CMV) in cardiac patients with atherosclerosis and coexisting chronic periodontitis (CP)...
November 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29548656/clinical-significance-of-changes-in-torque-teno-virus-dna-titer-after-chemotherapy-in-patients-with-primary-lung-cancer
#5
Tetsuro Sawata, Masashi Bando, Masayuki Nakayama, Naoko Mato, Hideaki Yamasawa, Masaharu Takahashi, Hiroaki Okamoto, Yukihiko Sugiyama
BACKGROUND: Several studies have reported that viral infections are related to lung cancer. We previously reported the involvement of Torque teno virus (TTV) in patients with lung cancer and idiopathic pulmonary fibrosis. However, the role of TTV in lung cancer growth, and its influence on changes in TTV DNA titers due to idiopathic pulmonary fibrosis (IPF) in lung cancer patients are poorly understood. METHODS: Serum TTV DNA titers were measured in serum samples obtained from patients with lung cancer...
March 2018: Respiratory Investigation
https://www.readbyqxmd.com/read/29536496/relevant-tumor-sink-effect-in-prostate-cancer-patients-receiving-177lu-psma-617-radioligand-therapy
#6
Christian Filss, Alexander Heinzel, Berthold Miiller, Andreas T J Vogg, Karl-Josef Langen, Felix M Mottaghy
AIM: In metastatic prostate cancer patients PSMA targeting radioligands have gained significant impact as theranostic probes. In this study a correlation between total tumor volume (TTV) and measured kidney dose as well as salivary glands (SG) uptake in177 Lu-PSMA-617 therapy was evaluated. METHODS: Eleven consecutive prostate cancer patients receiving a first cylcle of177 Lu-PSMA-617 (administered activity of approximately 6GBq) were included. The68 Ga-PSMA-11 PET/CT scan previous to therapy was used to determine TTV and SG uptake (glandulae submandibularis) employing PMOD version 3...
February 2018: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/29452573/the-effect-of-metformin-treatment-in-obese-insulin-resistant-patients-with-euthyroid-goiter
#7
Nicoleta Răcătăianu, Sorana Daniela Bolboacă, Adela-Viviana Sitar-Tăut, Smaranda Mârza, Daniela Moga, Ana Valea, Cristina Ghervan
Objective The study's objective was to evaluate the thyroid parameters in obese insulin-resistant patients with euthyroid diffuse or nodular goiter, following Metformin treatment. Patients and methods The study was experimental, open, and prospective. Fifty-three patients aged 18-68 were enrolled for two years. Obese insulin-resistant patients (cut-off Homeostasis-Model-Assessment of Insulin Resistance-HOMA-IR ≥ 2.5) with euthyroid nodular/diffuse goiter were included. Subjects with diabetes, hypo-/hyper-thyroidism, autoimmune thyroiditis, psychiatric disorders, liver or heart failure were excluded...
February 16, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29447223/virome-and-bacteriome-characterization-of-children-with-pneumonia-and-asthma-in-mexico-city-during-winter-seasons-2014-and-2015
#8
Jose A Romero-Espinoza, Yazmin Moreno-Valencia, Rodrigo H Coronel-Tellez, Manuel Castillejos-Lopez, Andres Hernandez, Aaron Dominguez, Angel Miliar-Garcia, Arturo Barbachano-Guerrero, Rogelio Perez-Padilla, Alejandro Alejandre-Garcia, Joel A Vazquez-Perez
BACKGROUND: Acute asthma exacerbations and pneumonia are important causes of morbidity and mortality in children and may coexist in the same children, although symptom overlap may lead to difficulties in diagnosis. Microbial and viral diversity and differential abundance of either may play an important role in infection susceptibility and the development of acute and chronic respiratory diseases. OBJECTIVES: To describe the virome and bacteriome present in the upper respiratory tract of hospitalized children with a clinical diagnosis of asthma and pneumonia during an acute exacerbation and an acute respiratory illness ARI episode respectively...
2018: PloS One
https://www.readbyqxmd.com/read/29419479/the-effect-of-total-tumor-volume-on-the-biologically-effective-dose-of-tumor-and-kidneys-for-177lu-labelled-psma-peptides
#9
Nusrat Begum, Anne Thieme, Nina Eberhardt, Robert Tauber, Ambros J Beer, Gerhard Glatting, Matthias Eiber, Peter Kletting
Aim: To simulate the effect of PSMA positive total tumor volume (TTV) on the tumor and organs at risk (OARs) biologically effective doses (BEDs) in patients with metastatic castration resistant prostate cancer (mCRPC) in 177Lu-PSMA radioligand therapy. Methods: A physiologically-based pharmacokinetic model was fitted to data of 13 patients treated with 177Lu-PSMA I&T. The tumor, kidneys and salivary glands BEDs were simulated for TTVs of 0.1-10 l. The activity and peptide amounts leading to an optimal tumor-to-kidneys BED ratio were also investigated...
February 1, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29407376/detection-and-phylogenetic-analysis-of-torque-teno-virus-ttv-carried-by-murine-rodents-and-house-shrews-in-china
#10
Yi-Quan Xiong, Yun Mo, Ming-Ji Chen, Wei Cai, Wen-Qiao He, Qing Chen
Between May 2015 and May 2017, 496 animals (473 murine rodents and 23 house shrews) were captured in six regions of China. A total of 22.8% (113/496) of throat swabs, 29.1% (142/488) of fecal samples and 23.8% (54/227) of serum samples tested positive for rodent torque teno virus 3 (RoTTV3). The positive rate in Rattus norvegicus was higher than the rate in Rattus tanezumi and Rattus losea. Of 23 house shrews, one throat swab and one serum sample were positive for RoTTV3. Ten murine rodents were simultaneously positive for RoTTV3 in throat swab, fecal and serum samples...
January 30, 2018: Virology
https://www.readbyqxmd.com/read/29346782/a-fair-chance-for-everyone-total-tumor-volume-as-a-selection-tool-in-liver-transplantation-for-hepatocellular-carcinoma
#11
Hugo Pinto-Marques, Silvia Silva, Mafalda Sobral, Rui Perdigoto, Américo Martins, Eduardo Barroso
Total tumor volume (TTV) has been proposed as a more accurate means of selecting patients for liver transplantation (LT) due to hepatocellular carcinoma (HCC). We aim to analyze the role of TTV in a population with a short waiting time on list. METHODS: Analysis of a prospective database of patients submitted to LT for HCC between September 1992 and February 2014. TTV, Milan criteria (MC), UCSF (University of California San Francisco), and "Up to Seven" criteria were calculated both with preoperative imaging exams and histological data...
January 18, 2018: Digestive Surgery
https://www.readbyqxmd.com/read/29311716/discovering-viral-genomes-in-human-metagenomic-data-by-predicting-unknown-protein-families
#12
Mauricio Barrientos-Somarribas, David N Messina, Christian Pou, Fredrik Lysholm, Annelie Bjerkner, Tobias Allander, Björn Andersson, Erik L L Sonnhammer
Massive amounts of metagenomics data are currently being produced, and in all such projects a sizeable fraction of the resulting data shows no or little homology to known sequences. It is likely that this fraction contains novel viruses, but identification is challenging since they frequently lack homology to known viruses. To overcome this problem, we developed a strategy to detect ORFan protein families in shotgun metagenomics data, using similarity-based clustering and a set of filters to extract bona fide protein families...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29282765/relationships-between-total-testicular-volume-reproductive-parameters-and-surrogate-measures-of-adiposity-in-men-presenting-for-couple-s-infertility
#13
K Ehala-Aleksejev, M Punab
The objective of this study was to investigate the relationships between total testicular volume (TTV), reproductive parameters and adiposity measures: body mass index, waist circumference and waist-to-height ratio. Semen analysis was performed, and reproductive hormone levels were measured in 2,672 male patients (mean age 32.6) due to couple's infertility. Significant, positive correlations between semen parameters and the TTV were found. Gonadotrophins were negatively related to the TTV, and testosterone was not related to the TTV...
December 28, 2017: Andrologia
https://www.readbyqxmd.com/read/29084205/the-kinetics-of-torque-teno-virus-plasma-dna-load-shortly-after-engraftment-predicts-the-risk-of-high-level-cmv-dnaemia-in-allogeneic-hematopoietic-stem-cell-transplant-recipients
#14
E Albert, C Solano, E Giménez, D Focosi, A Pérez, L Macera, J L Piñana, J C H Boluda, F Maggi, D Navarro
Monitoring Torque teno virus (TTV) DNA load helps to estimate the risk of opportunistic infections in solid organ transplant recipients. We investigated whether the early kinetic pattern of plasma TTV DNA load after allogeneic hematopoietic stem cell transplantation (allo-HSCT) associates with subsequent CMV and EBV DNAemia. This study included 71 allo-HSCT patients. We found that the area under the curve (AUC) for log10 TTV DNA loads quantified by days 20 and 30 after transplantation (TTV DNA load AUC20-30), was significantly lower (P=0...
October 30, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29032273/torquetenovirus-dynamics-and-immune-marker-properties-in-patients-following-allogeneic-hematopoietic-stem-cell-transplantation-a-prospective-longitudinal-study
#15
Philipp Wohlfarth, Michael Leiner, Christian Schoergenhofer, Georg Hopfinger, Irene Goerzer, Elisabeth Puchhammer-Stoeckl, Werner Rabitsch
Torquetenovirus (TTV) has been proposed as a marker of immune function in patients receiving immunosuppression after solid organ transplantation. This study aimed to define TTV plasma dynamics and investigate clinical associations in patients following allogeneic hematopoietic stem cell transplantation (HSCT). This was a single-center prospective longitudinal study involving 50 consecutive patients treated with HSCT between March 2015 and April 2016. TTV plasma DNA levels were measured with quantitative PCR at 12 consecutive time points during the first year after HSCT...
January 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28993019/a-modified-formula-for-dose-calculations-of-stereotactic-ablative-body-radiotherapy-for-non-small-cell-lung-cancer
#16
Yangsen Cao, Xiaofei Zhu, Yu Zhang, Chunshan Yu, Yongming Liu, Yongjian Sun, Zhitao Dai, Xueling Guo, Xiaoping Ju, Huojun Zhang
To provide a modified formula consistent with the Monte Carlo (MC) algorithm for dose calculations during stereotactic ablative body radiotherapy for non-small cell lung cancer. Seventy CyberKnife treatment plans were calculated and analyzed by MC and ray-tracing (RT) algorithms, separately. Parameters of treatment plans were compared, and those associated with differences of dose distributions were analyzed to establish a modified formula. Gross tumor volume and tumor tracking volume (TTV) were defined as the evident disease on the sequences of the window width and level of the lung and the mediastinum...
October 6, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28972950/phylogenetic-analysis-of-torque-teno-virus-in-thalassemic-children-in-egypt
#17
Noha A Hassuna, Eman Naguib, Medhat Abdel-Fatah, Suzan M Omar Mousa
OBJECTIVE: Torque teno virus (TTV) is a ubiquitous virus that is commonly associated with blood transfusion. The main aims of this study were to evaluate the incidence of TTV in polytransfused children with thalassemia and to determine for the first time the prevalent TTV genotypes in Egypt. METHODS: TTV was detected in 2 groups by nested PCR: the first group comprised 200 children with thalassemia, and the second included age- and sex-matched healthy children with no history of blood transfusion...
2017: Intervirology
https://www.readbyqxmd.com/read/28966070/prevalence-of-occult-hepatitis-b-virus-infection-and-torque-teno-virus-infection-and-their-association-with-hepatocellular-carcinoma-in-chronic-hepatitis-c-patients
#18
Agatha S Rosa, Oscar C Araujo, Flavia Savassi-Ribas, Carlos A Fernandes, Henrique S Coelho, Christian Niel, Cristiane A Villela-Nogueira, Natalia M Araujo
BACKGROUND: The role of occult hepatitis B virus (HBV) infection and Torque teno virus (TTV) infection in the development of hepatocellular carcinoma (HCC) in chronic hepatitis C patients is still uncertain. AIM: The aim of the present study was to investigate the prevalence and significance of OBI and TTV infection, and to examine the genetic diversity of these viruses, in chronic hepatitis C patients with and without HCC. METHODS: Sera from 151 hepatitis C virus (HCV)-infected patients (49 patients with HCC and 102 without HCC) negative for HBV surface antigen (HBsAg) were tested for the presence of OBI and TTV infection by semi-nested and group-specific multiplex PCR assays, respectively...
September 29, 2017: Virus Research
https://www.readbyqxmd.com/read/28868270/torque-teno-virus-ttv-among-%C3%AE-thalassemia-and-haemodialysis-patients-in-mazandaran-province-north-of-iran
#19
Hossein Jalali, Mohammad Reza Mahdavi, Najmeh Zaeromali
Torque Teno virus (TTV) is a transfusion transmitted virus that seems to be involved in several complications such as acute respiratory diseases, liver diseases, AIDS, cancer, and autoimmune reactions. In the present study the frequency of TTV was investigated among β- thalassemia (BT) and haemodialysis (HD) patients (high risk patients for TTV) in Mazandaran province, Iran. DNA was extracted from the serum of 82 BT and 100 HD patients, and nested PCR method was applied to detect TTV DNA. The aspartate transaminase(AST) and alanine transaminase (ALT) enzyme levels in BT patients were measured using photometric assay...
2017: International Journal of Molecular and Cellular Medicine
https://www.readbyqxmd.com/read/28846911/testicular-volumetry-and-prediction-of-daily-sperm-output-in-stallions-by-orchidometry-and-two-and-three-dimensional-sonography
#20
S Pricking, H Bollwein, K Spilker, G Martinsson, A Schweizer, S Thomas, H Oldenhof, H Sieme
Accurate determination of the testes volume and prediction of the daily sperm output (DSO) is valuable information for reproductive management of a stallion. The aim of this study was to compare different methods for measuring the testes volume, including caliper, 2D and 3D ultrasound. Special emphasis was on feasibility of 3D volume analysis. First, 22 castrated testes were measured and derived volumes were compared with volumes determined via volume displacement in a graded cylinder with saline solution. Then, during the breeding season, testes sizes of 52 stallions were measured in vivo and analyzed...
August 19, 2017: Theriogenology
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