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https://www.readbyqxmd.com/read/28636882/foxn1-italian-founder-mutation-in-indian-family-implications-in-prenatal-diagnosis
#1
Akella Radha Rama Devi, Nagesh Narayan Panday, Shaik Mohammad Naushad
The Forkhead box N1 (FOXN1) is a transcriptional factor regulating the development, differentiation and function of thymic epithelial cells; maintaining T-lineage progenitors in bone marrow; promoting terminal differentiation of epithelial cells of hair follicles. Mutation in FOXN1 was reported to cause a rare disorder characterized by rudimentary thymus gland, T-cell immunodeficiency, congenital alopecia and nail dystrophy within an Italian community. This is the first report of FOXN1 p.R255X mutation from India, outside this endogamous Italian community...
June 18, 2017: Gene
https://www.readbyqxmd.com/read/28633599/mechanism-of-deltamethrin-induced-thymic-and-splenic-toxicity-in-mice-and-its-protection-by-piperine-and-curcumin-in-vivo-study
#2
Anoop Kumar, Dinakar Sasmal, Neelima Sharma
Deltamethrin (DLM) is a well-known pyrethroid insecticide which is widely used in the agriculture and home pest control due to restriction on the sale of organophosphate. DLM induced apoptosis is well known but its mechanism is still unclear. This study has been designed to find out its mechanism of apoptosis with the help of computational methods along with in vivo methods. The QikProp and ProTox results have shown that DLM has good oral absorption. The docking results reveal that DLM has a strong binding affinity toward the CD4, CD8, CD28 and CD45 receptors...
February 28, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28631897/the-interaction-mode-of-groove-binding-between-quercetin-and-calf-thymus-dna-based-on-spectrometry-and-simulation
#3
Yijie Sha, Xu Chen, Bing Niu, Qin Chen
Quercetin, a ubiquitous flavanoid, has numerous pharmacological effects, such as antioxidant and antitumor. Previous studies showed nucleic acids were the potential biological targets for antitumor medicine. For exploring the mechanism of DNA-target medicine, the interaction between quercetin and calf thymus DNA was studied based on the method of spectrometry and simulation in our study. Firstly, the interaction between quercetin and calf thymus DNA was confirmed by fluorescence spectrometry. Furthermore, circular dichroism, fluorescence polarization, competitive displacement assay and salt concentration dependence assay were applied to search the interaction mode of quercetin-calf thymus DNA, which proved the existence of groove binding and electrostatic interaction...
June 20, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28631311/the-il-10-stat3-axis-contributions-to-immune-tolerance-by-thymus-and-peripherally-derived-regulatory-t-cells
#4
REVIEW
Klaus G Schmetterer, Winfried F Pickl
The signal transducer and activator of transcription (STAT) proteins are important mediators for the integration of extrinsic signals provided by cytokines and hormones and thereby adapt cellular processes to their surroundings. In the past decade, the involvement of STAT3 in the regulation of T-cell responses has become a topic of increasing interest. STAT3 is activated in response to multiple cytokines, many of which have been shown to influence T-cell responses. Interestingly, many of these factors have been described with apparent opposing roles, such as the highly pro-inflammatory potency of IL-6 and the anti-inflammatory properties of IL-10, thus raising the possibility that STAT3 signaling may fulfill diverse roles in CD4(+) T-cells...
June 20, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28627729/the-immune-deficiency-of-chromosome-22q11-2-deletion-syndrome
#5
Megan Morsheimer, Terri F Brown Whitehorn, Jennifer Heimall, Kathleen E Sullivan
The syndrome originally described by Dr. Angelo DiGeorge had immunodeficiency as a central component. When a 22q11.2 deletion was identified as the cause in the majority of patients with DiGeorge syndrome, the clinical features of 22q11.2 deletion syndrome became so expansive that the immunodeficiency became less prominent in our thinking about the syndrome. This review will focus on the immune system and the changes in our understanding over the past 50 years. Initially characterized as a pure defect in T cell development, we now appreciate that many of the clinical features related to the immunodeficiency are well downstream of the limitation imposed by a small thymus...
June 19, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28624470/molecular-cloning-and-expression-analysis-of-ccl25-and-its-receptor-ccr9s-from-epinephelus-coioides-post-cryptocaryon-irritans-infection
#6
Man Yang, Ling Zhou, Hai-Qing Wang, Xiao-Chun Luo, Xue-Ming Dan, Yan-Wei Li
Among other functions, CCL25/CCR9 has an important role in regulating the trafficking of developing T cells in the thymus, and in homing memory T cells to the small intestine. The function of this chemokine-receptor complex is not well studied in fish. We identified a CCL25-like (EcCCL25, 108 aa) and two CCR9-like sequences (EcCCR9aa 373 aa; and EcCCR9b, 375 aa) from a transcriptome database of orange-spotted grouper (Epinephelus coioides). EcCCL25, EcCCR9a, and EcCCR9b shared conserved structural features with homologs from mammals and from other fish, and a consistent relationship with phylogenetic trees and sequence identities...
June 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28622852/efficacy-of-e2-glycoprotein-fused-to-porcine-cd154-as-a-novel-chimeric-subunit-vaccine-to-prevent-classical-swine-fever-virus-vertical-transmission-in-pregnant-sows
#7
Sara Muñoz-González, Yusmel Sordo, Marta Pérez-Simó, Marisela Suárez, Albert Canturri, Maria Pilar Rodriguez, María Teresa Frías-Lepoureau, Mariano Domingo, Mario Pablo Estrada, Llilianne Ganges
Here we evaluated the effect of double vaccination with a novel subunit marker vaccine candidate based in the CSFV E2 glycoprotein fused to the porcine CD154 to prevent CSFV vertical transmission. A lentivirus-based gene delivery system was used to obtain a stable recombinant HEK 293 cell line for the expression of E2 fused to porcine CD154 molecule. Six pregnant sows were distributed in two groups and at 64days of gestation animals numbered 1-4 (group 1) were vaccinated via intramuscular inoculation with 50μg of E2-CD154 subunit vaccine...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28620098/cytokine-signaling-in-the-development-and-homeostasis-of-regulatory-t-cells
#8
Kevin H Toomer, Thomas R Malek
Cytokine signaling is indispensable for regulatory T-cell (Treg) development in the thymus, and also influences the homeostasis, phenotypic diversity, and function of Tregs in the periphery. Because Tregs are required for establishment and maintenance of immunological self-tolerance, investigating the role of cytokines in Treg biology carries therapeutic potential in the context of autoimmune disease. This review discusses the potent and diverse influences of interleukin (IL)-2 signaling on the Treg compartment, an area of knowledge that has led to the use of low-dose IL-2 as a therapy to reregulate autoaggressive immune responses...
June 15, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28619429/vitamin-d-and-multiple-sclerosis-an-update
#9
REVIEW
Charles Pierrot-Deseilligny, Jean-Claude Souberbielle
The most recent findings linking exposure to sun and vitamin D insufficiency to multiple sclerosis (MS) are reviewed. Due to insufficient sunshine and changing lifestyles, hypovitaminosis D is widespread in temperate countries. Numerous epidemiological studies have strongly suggested that sunshine and vitamin D insufficiency contributes to MS risk in these countries. Moreover, several large genetic studies in MS patients have recently stated unequivocally that diverse abnormalities involving vitamin D metabolism are related to the risk of the disease...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28618854/verification-of-organ-doses-calculated-by-a-dose-monitoring-software-tool-based-on-monte-carlo-simulation-in-thoracic-ct-protocols
#10
Nika Guberina, Saravanabavaan Suntharalingam, Kai Naßenstein, Michael Forsting, Jens Theysohn, Axel Wetter, Adrian Ringelstein
Background The importance of monitoring of the radiation dose received by the human body during computed tomography (CT) examinations is not negligible. Several dose-monitoring software tools emerged in order to monitor and control dose distribution during CT examinations. Some software tools incorporate Monte Carlo Simulation (MCS) and allow calculation of effective dose and organ dose apart from standard dose descriptors. Purpose To verify the results of a dose-monitoring software tool based on MCS in assessment of effective and organ doses in thoracic CT protocols...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28616293/video-assisted-thoracoscopic-completion-thymectomy-based-on-mediastinal-pleura-guidance
#11
Kai Guo, Liping Tong, Xiaofei Li, Xiaolong Yan
We describe a practical video-assisted thoracoscopic surgery (VATS) technique for the en bloc resection of the thymoma, thymus, and bilateral mediastinum lipid based on mediastinal pleura guidance. By taking advantage of single-lumen endotracheal tube (SLET) anesthesia and artificial pneumothorax, we acquired excellent exposure of the anterior mediastinum operative field. In addition, our limited data showed that this surgical approach might have a potential tendency on reducing the blood loss and the operative times...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28615666/a-sex-specific-reconstitution-bias-in-the-competitive-cd45-1-cd45-2-congenic-bone-marrow-transplant-model
#12
Salema Jafri, Stephen D Moore, Nicholas W Morrell, Mark L Ormiston
Allelic variants of the pan-haematopoietic cell marker CD45, identified as CD45.1 and CD45.2, have been established as a marker system to track haematopoietic cells following congenic mouse bone marrow transplants. Despite the frequent use of this model for studying the impact of genetic modifications on relative differentiation potential, it is now evident that a bias exists in CD45.1 versus CD45.2 cell reconstitution. While this bias has been demonstrated by reduced reconstitution potential in B cells of CD45...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615039/interleukin-21-promotes-thymopoiesis-recovery-following-hematopoietic-stem-cell-transplantation
#13
Aurélie Tormo, Fatemeh Khodayarian, Yun Cui, Edouard Al-Chami, Reem Kanjarawi, Beatriz Noé, Huijie Wang, Moutih Rafei
BACKGROUND: Impaired T cell reconstitution remains a major deterrent in the field of bone marrow (BM) transplantation (BMT) due to pre-conditioning-induced damages inflicted to the thymi of recipient hosts. Given the previously reported thymo-stimulatory property of interleukin (IL)-21, we reasoned that its use post-BMT could have a profound effect on de novo T cell development. METHODS: To evaluate the effect of IL-21 on de novo T cell development in vivo, BM derived from RAG2p-GFP mice was transplanted into LP/J mice...
June 14, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28614751/molecular-spectroscopic-and-thermodynamic-studies-on-the-interaction-of-anti-platelet-drug-ticlopidine-with-calf-thymus-dna
#14
Shumaila Afrin, Yusra Rahman, Tarique Sarwar, Mohammed Amir Husain, Abad Ali, Shamsuzzaman, Mohammad Tabish
Ticlopidine is an anti-platelet drug which belongs to the thienopyridine structural family and exerts its effect by functioning as an ADP receptor inhibitor. Ticlopidine inhibits the expression of TarO gene in S. aureus and may provide protection against MRSA. Groove binding agents are known to disrupt the transcription factor DNA complex and consequently inhibit gene expression. Understanding the mechanism of interaction of ticlopidine with DNA can prove useful in the development of a rational drug designing system...
June 11, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28614378/comparative-analysis-of-virus-host-interactions-caused-by-a-virulent-and-an-attenuated-duck-hepatitis-a-virus-genotype-1
#15
Xumin Ou, Sai Mao, Jingyu Cao, Anchun Cheng, Mingshu Wang, Dekang Zhu, Shun Chen, Renyong Jia, Mafeng Liu, Kunfeng Sun, Qiao Yang, Ying Wu, Xiaoyue Chen
Because of their better immunogenicity and the improved protection they afford, live attenuated vaccines derived from serial passaging in an abnormal host are widely used to protect humans or animals from certain pathogens. Here, we used a virulent and a chicken embryo-attenuated duck hepatitis A virus genotype 1 to compare the different regulated immune responses induced by viruses with differing virulence. In this study, the attenuated strains had lower protein expression levels than the virulent strains as identified by immunohistochemistry...
2017: PloS One
https://www.readbyqxmd.com/read/28609920/-i-prionotropis-i-i-ancosae-i-a-new-species-of-thrinchinae-orthoptera-pamphagidae-from-the-northeast-of-the-iberian-peninsula
#16
Josep Maria Olmo-Vidal
A new species of the genus Prionotropis Fieber, 1853 is described from Catalonia (Northeast of the Iberian Peninsula). Prionotropis ancosae n. sp. was collected in a calcicolous stepic scrub dominated mainly by thyme (Thymus vulgaris). P. ancosae n. sp. is characterized by the following characters: the pronotum in dorsal view narrow and in lateral view with the principal transverse sulcus between prozona and metazona clearly incised; mesosternal lobes equal width than long and width than mesosternal interspace; tegmina extend at most to the end of second abdominal segment in the females and the end of abdomen in the males; inside hind femora at the base to the middle part and inside hind tibiae blue; and phallic complex with the penis valves long...
April 28, 2017: Zootaxa
https://www.readbyqxmd.com/read/28608859/residua-of-thymus-in-the-mediastinum-clinical-aspects-cadaveric-study
#17
Ewa Mizia, Wiesława Klimek-Piotrowska, Jarosław Kużdżał, Tomasz Konopka, Monika Lis, Juliusz Pankowski, Artur Pasternak, Jarosław Zawiliński, Andrzej Wrona
The main goal of this study was to investigate possible residua of thymic tissue in 100 adult cadavers with no thoracic pathology known before, by dissection of standard locations of thymic tissue in perithyroid, periaortic, peritracheal and retrotracheal spaces, as well as areas located next to the course of phrenic, vagus and left recurrent laryngeal nerves. Thus obtained tissue samples were studied by two pathologists independently. The remnants of the thymic tissue were found in 61 out of 100 specimens studied...
2017: Folia Medica Cracoviensia
https://www.readbyqxmd.com/read/28607133/loss-of-thymic-innate-lymphoid-cells-leads-to-impaired-thymopoiesis-in-experimental-graft-vs-host-disease
#18
Jarrod A Dudakov, Anna M Mertelsmann, Margaret H O'Connor, Robert R Jenq, Enrico Velardi, Lauren F Young, Odette M Smith, Richard L Boyd, Marcel R M van den Brink, Alan M Hanash
Graft vs. host disease (GVHD) and post-transplant immunodeficiency are frequently related complications of allogeneic hematopoietic transplantation. Alloreactive donor T cells can damage thymic epithelium, thus limiting new T cell development. While the thymus has a remarkable capacity to regenerate after injury, endogenous thymic regeneration is impaired in GVHD. The mechanisms leading to this regenerative failure are largely unknown. Here we demonstrate in experimental mouse models that GVHD results in depletion of intrathymic group 3 innate lymphoid cells (ILC3s) necessary for thymic regeneration...
June 12, 2017: Blood
https://www.readbyqxmd.com/read/28605955/solitary-thymic-metastasis-of-breast-cancer-13-years-after-surgery
#19
Akira Fukunaga, Yuji Sasamura, Akio Takada, Yoshihiro Murakami, Hirotake Abe, Mamoru Miyasaka
A 59-year-old woman was noted to have an anterior mediastinal mass on computed tomography at a regular follow-up 13 years after initial surgery for left breast cancer. Magnetic resonance imaging showed an anterior mediastinal mass. A total thymectomy with excision of surrounding lymphoid tissue was performed. Pathological examination of the resected tumor confirmed the diagnosis of thymic metastasis from breast cancer. The patient has been alive for 6 years after thymectomy. Metastases to the thymus are rare, but long-term survival can be expected with appropriate treatment...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28602157/thymic-large-cell-neuroendocrine-carcinoma-a-rare-and-aggressive-tumor-a-case-report
#20
Efared Boubacar, Gabrielle Atsame-Ebang, Sani Rabiou, Ammor Fatimazahra, Asmae Mazti, Ibrahim S Sidibé, Layla Tahiri, Nawal Hammas, Ouadnouni Yassine, Smahi Mohamed, Chbani Laila, El Fatemi Hinde
BACKGROUND: Neuroendocrine tumors are a large group of tumors with a wide spectrum of behavior, affecting mainly the digestive system and the lung. The thymus is very rarely affected. CASE PRESENTATION: A 28-year-old Arab woman presented with chronic chest pain and dyspnea. A computed tomography scan showed a huge anterior mediastinal mass invading neighboring structures. A mediastinotomy was performed with biopsies of the mass. Pathological findings were consistent with a thymic large cell neuroendocrine carcinoma...
June 12, 2017: Journal of Medical Case Reports
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