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https://www.readbyqxmd.com/read/27913457/treatment-of-blastic-plasmacytoid-dendritic-cell-neoplasm
#1
Jill M Sullivan, David A Rizzieri
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare myeloid malignancy with no defined standard of care. BPDCN presents most commonly with skin lesions with or without extramedullary organ involvement before leukemic dissemination. As a result of its clinical ambiguity, differentiating BPDCN from benign skin lesions or those of acute myeloid leukemia with leukemia cutis is challenging. BPDCN is most easily defined by the phenotype CD4(+)CD56(+)CD123(+)lineage(-)MPO(-), although many patients will present with variable expression of CD4, CD56, or alternate plasmacytoid markers, which compounds the difficulty in differentiating BPDCN from other myeloid or lymphoid malignancies...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27906172/inflammatory-macrophages-can-transdifferentiate-into-myofibroblasts-during-renal-fibrosis
#2
Xiao-Ming Meng, Shuang Wang, Xiao-Ru Huang, Chen Yang, Jun Xiao, Yang Zhang, Ka-Fai To, David J Nikolic-Paterson, Hui-Yao Lan
Myofibroblasts play a central role in renal fibrosis although the origin of these cells remains controversial. We recently reported that bone marrow-derived macrophages can give rise to myofibroblasts through macrophage to myofibroblast transition (MMT). However, several important issues remain to be addressed, including whether MMT occurs in human kidney disease and verification of the MMT process through lineage tracing. Biopsies from a cohort of 58 patients with various forms of kidney disease were examined for MMT cells that co-express macrophage (CD68) and myofibroblast (α-smooth muscle actin, α-SMA) markers...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27902437/development-validation-and-implementation-of-a-quadruplex-real-time-pcr-assay-for-identification-of-potentially-toxigenic-corynebacteria
#3
Aruni De Zoysa, Androulla Efstratiou, Ginder Mann, Timothy G Harrison, Norman K Fry
Toxigenic corynebacteria are uncommon in the UK, however laboratory confirmation by the national reference laboratory (NRL) can inform public health action according to national guidelines. Standard phenotypic tests for identification and toxin expression of isolates can take from ≥24 h to ≥48 h, from receipt. To decrease the time to result, a real-time PCR (qPCR) assay was developed for confirmation of both identification of Corynebacterium diphtheriae and Corynebacterium ulcerans/ Corynebacterium pseudotuberculosis and detection of the diphtheria toxin gene...
November 1, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902402/pathogenic-properties-of-a-corynebacterium-diphtheriae-strain-isolated-from-a-case-of-osteomyelitis
#4
Renata Stavracakis Peixoto, Elena Hacker, Camila Azevedo Antunes, Dulanthi Weerasekera, Alexandre Alves de Souza de Oliveira Dias, Carlos Alberto Martins, Raphael Hirata, Kátia Regina Netto Dos Santos, Andreas Burkovski, Ana Luíza Mattos-Guaraldi
Corynebacterium diphtheriae is typically recognized as a colonizer of the upper respiratory tract (respiratory diphtheria) and the skin (cutaneous diphtheria). However, different strains of Corynebacteriumdiphtheriae can also cause invasive infections. In this study, the characterization of a non-toxigenic Corynebacteriumdiphtheriae strain (designated BR-INCA5015) isolated from osteomyelitis in the frontal bone of a patient with adenoid cystic carcinoma was performed. Pathogenic properties of the strain BR-INCA5015 were tested in a Caenorhabditis elegans survival assay showing strong colonization and killing by this strain...
November 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27900387/a-modification-specific-peptide-based-immunization-approach-using-crm197-carrier-protein-development-of-a-selective-vaccine-against-pyroglutamate-a%C3%AE-peptides
#5
Valérie Vingtdeux, Haitian Zhao, Pallavi Chandakkar, Christopher M Acker, Peter Davies, Philippe Marambaud
Strategies aimed at reducing cerebral accumulation of the amyloid-β (Aβ) peptides have therapeutic potential in Alzheimer's disease (AD). Aβ immunization has proven to be effective at promoting Aβ clearance in animal models but adverse effects have hampered its clinical evaluation. The first anti-Aβ immunization clinical trial, which assessed a full-length Aβ1-42 vaccine, increased the risk of encephalitis most likely because of autoimmune pro-inflammatory T helper 1 (Th1) response against all forms of Aβ...
November 28, 2016: Molecular Medicine
https://www.readbyqxmd.com/read/27895446/a-case-of-fatal-sepsis-due-to-multidrug-resistant-corynebacterium-striatum
#6
M Chatzopoulou, T Koufakis, I Voulgaridi, I Gabranis, M Tsiakalou
BACKGROUND: Although non-diphtheria corynebacteria have traditionally been regarded as avirulent members of human bacterial flora, their pathogenic potential is increasingly recognized in our time. Reasons for this include the prolonged survival of severely ill and immunocompromised patients, the development of more invasive diagnostic and therapeutic procedures and the sub-optimal use of antibiotics that disrupts normal microbial balance and favors superinfections. CASE REPORT: We present a rare case of sepsis due to multidrug-resistant Corynebacterium striatum in a 76-year-old host...
January 2016: Hippokratia
https://www.readbyqxmd.com/read/27891698/vaccination-and-unexplained-sudden-death-risk-in-taiwanese-infants
#7
Wan-Ting Huang, Robert T Chen, Yu-Chen Hsu, John W Glasser, Philip H Rhodes
PURPOSE: In March 1992, eight infants who had died within 36 hours of receiving whole-cell pertussis vaccine (diphtheria, tetanus, and whole-cell pertussis [DTwP]) prompted the Taiwan health authorities to suspend its use. We conducted an investigation of vaccination and sudden unexplained infant death (SUID) and repeated it more recently after Taiwan switched to acellular pertussis vaccine (diphtheria, tetanus, and acellular pertussis [DTaP]) in 2010. METHODS: All SUIDs aged 31-364 days during 1990-1992 and 1996-2013 were selected from the death registration databases...
November 28, 2016: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/27889711/immunogenicity-and-safety-of-a-liquid-hexavalent-vaccine-in-indian-infants
#8
Jugesh Chhatwal, Sanjay Lalwani, Emmanuel Vidor
OBJECTIVE: To evaluate the immunogenicity and safety of a fully liquid, hexavalent diphtheria tetanus acellular pertussis inactivated poliovirus hepatitis B Haemophilus influenzae type b (DTaP IPV HB PRPT) vaccine in Indian infants. DESIGN: Phase III, single-arm study. SETTING: Two tertiary care hospitals. PARTICIPANTS: 177 healthy, 6-week-old infants. INTERVENTION: All participants received HB and OPV vaccines at birth and DTaP-IPV-HB-PRP~T at 6, 10, 14 weeks of age...
November 5, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27881543/first-report-on-the-draft-genome-sequences-of-corynebacterium-diphtheriae-isolates-from-india
#9
Balaji Veeraraghavan, Shalini Anandan, Suresh Kumar Rajamani Sekar, Radha Gopi, Naveen Kumar Devanga Ragupathi, Srilekha Ramesh, Valsan Philip Verghese, Sophy Korulla, Sarah Mathai, Lucky Sangal, Sudhir Joshi
We report here the draft genome sequences of five Corynebacterium diphtheriae isolates of Indian origin. The C. diphtheriae isolates TH1141, TH510, TH1526, TH1337, and TH2031 belong to sequence type ST-50, ST-295, ST-377, ST-405, and ST-405, with an average genome size of 2.5 Mbp.
November 23, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27880744/notice-to-readers-final-2015-reports-of-nationally-notifiable-infectious-diseases-and-conditions
#10
(no author information available yet)
The table listed in this report on pages 1307-1321 presents finalized data, as of June 30, 2016, from the National Notifiable Diseases Surveillance System (NNDSS) for 2015. These data will be published in more detail in the Summary of Notifiable Infectious Diseases and Conditions - United States, 2015 (1). Because no cases were reported in the United States during 2015, the following diseases do not appear in this early release table: anthrax; dengue hemorrhagic fever; diphtheria; eastern equine encephalitis virus disease, nonneuroinvasive; poliomyelitis, paralytic; poliovirus infection, nonparalytic; severe acute respiratory syndrome-associated coronavirus disease (SARS-CoV); smallpox; western equine encephalitis virus disease, neuroinvasive and nonneuroinvasive; yellow fever; and viral hemorrhagic fevers...
November 25, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27879555/safety-and-immunogenicity-of-dtap5-ipv-compared-with-dtap5-plus-ipv-as-the-fifth-dose-in-children-4-to-6-years-of-age
#11
Michael J Smith, Emilia Jordanov, Xiaohua Sheng, Peter H Tsang
BACKGROUND: Immunogenicity and safety of stand-alone diphtheria, tetanus toxoid, 5-component acellular pertussis vaccine adsorbed, inactivated poliovirus (IPV) combination vaccine (DTaP5-IPV) was compared with separate DTaP5 plus IPV vaccines as fifth dose in children 4-6 years of age. METHODS: In this phase III, controlled, multicenter, randomized, open-label study participants were randomized to DTaP5-IPV plus measles/mumps/rubella (MMR) and varicella virus (VZV) vaccines (Group 1; N=324), DTaP5+IPV with MMR and VZV (Group 2; N=327), DTaP5-IPV with/without MMR/VZV (Group 3; N=2419), or DTaP5+IPV with/without MMR/VZV (Group 4; N=302)...
November 22, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27878345/low-vaccination-rates-among-patients-with-rheumatoid-arthritis-in-a-german-outpatient-clinic
#12
Marco Krasselt, Jean-Philipp Ivanov, Christoph Baerwald, Olga Seifert
Patients with rheumatoid arthritis (RA) are at an increased risk of acquiring infections due to two reasons: the disease itself and the immunosuppressive therapy. Vaccinations against preventable diseases are therefore of utmost importance for these group of patients. To estimate vaccination frequencies among patients with rheumatoid arthritis, we studied patients in a survey and calculated vaccination rates based on their vaccination documents. Patients have been recruited from our outpatient clinic during one of their routine visits...
November 22, 2016: Rheumatology International
https://www.readbyqxmd.com/read/27876200/improving-adolescent-hpv-vaccination-in-a-randomized-controlled-cluster-trial-using-the-4-pillars%C3%A2-practice-transformation-program
#13
Richard K Zimmerman, Krissy K Moehling, Chyongchiou J Lin, Song Zhang, Jonathan M Raviotta, Evelyn C Reis, Sharon G Humiston, Mary Patricia Nowalk
OBJECTIVE: Uptake of meningococcal vaccine (MCV) and tetanus, diphtheria and pertussis (Tdap) vaccine among adolescents has approached Healthy People 2020 goals, but human papillomavirus (HPV) vaccination has not. This study evaluated an intervention using the 4 Pillars™ Practice Transformation Program to increase HPV, MCV and Tdap uptake among adolescents in primary care practices. METHODS: Practices with at least 50 patients 11-17years old with estimated vaccination rates less than national goals, were assigned to intervention (n=11) and control (n=11) groups in a randomized controlled cluster trial; 9 intervention and 11 control sites completed the study...
November 18, 2016: Vaccine
https://www.readbyqxmd.com/read/27872951/immunogenicity-and-efficacy-of-a-rationally-designed-vaccine-against-vascular-endothelial-growth-factor-in-mouse-solid-tumor-models
#14
Aizhang Xu, Li Zhang, Yangyang Chen, Zhibing Lin, Rongxiu Li
Vascular endothelial growth factor (VEGF) plays an important role in the progression of various cancers. The VEGF-specific antibody bevacizumab combined with chemotherapy was shown to significantly improve progression-free survival in certain cancers. However, repeated administration is necessary for effective suppression of VEGF, thereby making the therapy expensive and cumbersome. Thus, it is urgent to develop alternative reagents such as VEGF vaccines. Here we report that DTT-VEGF, a VEGF-based antigen consisting of the receptor-binding domain of VEGF and diphtheria toxin T domain (DTT), not only stimulated neutralizing antibody response, but also induced type 1 immune response as well as anti-tumor cytotoxic T lymphocytes in mice when administered with aluminum hydroxide adjuvant...
November 21, 2016: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/27872935/the-social-transformation-of-singapore-medicine-through-55-years-of-the-smj
#15
Ee Heok Kua, Jade Phek Hui Kua
The Singapore Medical Journal (SMJ) has in the past 55 years reflected the phenomenal socioeconomic progress of Singapore. Publications in the pre-independent years were mainly on diseases like cholera, diphtheria, leprosy, tetanus and worm infestation. In the new millennium, the research papers included molecular genetics, health economics, obesity, Internet medicine, cancer, cosmetic surgery and palliative medicine. The annual SMA Lecture published in the SMJ provides an ethical compass for doctors to remind them of primum non nocere...
November 2016: Singapore Medical Journal
https://www.readbyqxmd.com/read/27872209/depletion-of-neural-crest-derived-cells-leads-to-reduction-in-plasma-noradrenaline-and-alters-b-lymphopoiesis
#16
Naoki Tsunokuma, Toshiyuki Yamane, Chiaki Matsumoto, Motokazu Tsuneto, Kana Isono, Kyoko Imanaka-Yoshida, Hidetoshi Yamazaki
Hematopoietic stem cells and their lymphoid progenitors are supported by the bone marrow (BM) microenvironmental niches composed of various stromal cells and Schwann cells and sympathetic nerve fibers. Although neural crest (NC) cells contribute to the development of all the three, their function in BM is not well understood. In this study, NC-derived cells were ablated with diphtheria toxin in double-transgenic mice expressing NC-specific Cre and Cre-driven diphtheria toxin receptor with yellow fluorescent protein reporter...
November 21, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27869729/auditing-the-immunization-data-quality-from-routine-reports-in-shangyu-district-east-china
#17
Yu Hu, Xinpei Zhang, Qian Li, Yaping Chen
Objective: To evaluate the immunization data quality in Shangyu District, East China. Methods: An audit for immunization data for the year 2014 was conducted in 20 vaccination clinics of Shangyu District. The consistency of immunization data was estimated by verification factors (VFs), which was the proportion of vaccine doses reported as being administered that could be verified by written documentation at vaccination clinics. The quality of monitoring systems was evaluated using the quality index (QI). Results: The VFs of 20 vaccine doses ranged from 0...
November 18, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27866765/safety-tolerability-and-immunogenicity-of-a-single-dose-4-antigen-or-3-antigen-staphylococcus-aureus-vaccine-in-healthy-older-adults-results-of-a-randomised-trial
#18
C Buddy Creech, Robert W Frenck, Eric A Sheldon, David J Seiden, Martin K Kankam, Edward T Zito, Douglas Girgenti, Joseph M Severs, Frederick W Immermann, Lisa K McNeil, David Cooper, Kathrin U Jansen, William Gruber, Joseph Eiden, Annaliesa S Anderson, James Baber
BACKGROUND: The decline in immune function with age is a challenge to vaccine development. Following an initial study in adults aged 18-64years, this study evaluated the safety and immunogenicity of Staphylococcus aureus (S. aureus) 4-antigen (SA4Ag) and 3-antigen (SA3Ag) vaccine in older adults. SA3Ag included capsular polysaccharide serotypes 5 and 8 (CP5 and CP8) conjugated to the nontoxic mutant form of diphtheria toxin (CRM197) and a recombinant version of clumping factor A (ClfA)...
November 17, 2016: Vaccine
https://www.readbyqxmd.com/read/27863545/porcine-treg-depletion-with-a-novel-diphtheria-toxin-based-anti-human-ccr4-immunotoxin
#19
Zhaohui Wang, Nalu Navarro-Alvarez, Jigesh A Shah, Huiping Zhang, Qi Huang, Qian Zheng, Joren C Madsen, David H Sachs, Christene A Huang, Zhirui Wang
Regulatory T cells (Tregs) are known to play an important role in immunoregulation and have been shown to facilitate induction of transplantation tolerance. Chemokine (C-C motif) receptor 4 (CCR4) is expressed on the surface of effector Tregs involved in controlling alloimmune and autoimmune responses. Recently we have developed a novel diphtheria-toxin based anti-human CCR4 immunotoxin for depleting CCR4(+) cells in vivo. In this study, we have demonstrated that the anti-human CCR4 immunotoxin bound to porcine lymphocytes including CD4(+)FoxP3(+) Tregs...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27862309/study-of-greek-children-and-youths-with-cystic-fibrosis-identifies-immunisation-gaps-and-delays
#20
Helena C Maltezou, Stavros Doudounakis, Maria Lekaditi, Kalliopi Tanou, Panos Katerelos, Maria Theodoridou
AIM: Data about immunisation rates in cystic fibrosis (CF) patients are scarce. We estimated the rates and timeliness of immunisations in CF patients aged 0.55-22 years. METHODS: We studied 122 subjects at a hospital in Greece in 2014. A standard questionnaire was used to collect data and parents' opinions about immunisations. RESULTS: The complete immunisation rates were 92.6% for diphtheria-tetanus-acellular pertussis-inactivated poliomyelitis-Haemophilus influenzae (DTaP-IPV-Hib), 96...
November 10, 2016: Acta Paediatrica
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