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Treponema pallidum

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https://www.readbyqxmd.com/read/28220718/the-big-imitator-strikes-again-a-case-report-of-neurosyphilis-in-a-patient-with-newly-diagnosed-hiv
#1
Sévérine de Bruijn, Chris Kenyon, Nicolas Léonard, Erika Vlieghe
BACKGROUND: Neurosyphilis is the result of an infection of the central nervous system caused by the spirochete Treponema pallidum. Its clinical presentation includes meningovascular syphilis, tabes dorsalis, and dementia paralytica, resulting in a wide range of symptoms such as psychosis, Parkinsonism, and depression. CASE REPORT: A 49-year-old male was admitted to a psychiatric hospital because of social withdrawal and self-neglect, indicative of a major depression...
February 21, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/28216574/an-in-silico-identification-of-common-putative-vaccine-candidates-against-treponema-pallidum-a-reverse-vaccinology-and-subtractive-genomics-based-approach
#2
Arun Kumar Jaiswal, Sandeep Tiwari, Syed Babar Jamal, Debmalya Barh, Vasco Azevedo, Siomar C Soares
Sexually transmitted infections (STIs) are caused by a wide variety of bacteria, viruses, and parasites that are transmitted from one person to another primarily by vaginal, anal, or oral sexual contact. Syphilis is a serious disease caused by a sexually transmitted infection. Syphilis is caused by the bacterium Treponema pallidum subspecies pallidum. Treponema pallidum (T. pallidum) is a motile, gram-negative spirochete, which can be transmitted both sexually and from mother to child, and can invade virtually any organ or structure in the human body...
February 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28203197/a-case-of-syphilitic-uveitis-in-which-vitreous-surgery-was-useful-for-the-diagnosis-and-treatment
#3
Takatoshi Kobayashi, Chihiro Katsumura, Hiromi Shoda, Nanae Takai, Sayako Takeda, Takako Okamoto, Koichi Maruyama, Rei Tada, Kensuke Tajiri, Teruyo Kida, Tsunehiko Ikeda
PURPOSE: To report a case of atypical syphilitic uveitis complicated with retinal vasculitis, proliferative retinopathy, and vitreous hemorrhage in which vitreous surgery was useful for the diagnosis and treatment. CASE REPORT: A 38-year-old female was referred to our hospital after noticing visual disturbance in her right eye. Fundoscopy examination of that eye revealed retinal phlebitis accompanied by retinal hemorrhage and soft exudate, and remarkable exudative changes in the retinal vessels from the upper arcade to the macula region...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28196838/screening-for-asymptomatic-neurosyphilis-in-hiv-patients-after-treatment-of-early-syphilis-an-observational-study
#4
Andrew Tomkins, Shazaad Ahmad, Darren E Cousins, Caroline M Thng, Francisco Javier Vilar, Stephen P Higgins
OBJECTIVE: To determine the prevalence of asymptomatic neurosyphilis (ANS) in HIV-positive individuals after treatment of early syphilis with single-dose benzathine penicillin G (BPG) or oral antibiotic alternatives. METHODS: Patients at high risk of neurosyphilis (defined by serum rapid plasma reagin (RPR) titre ≥1:32 and/or peripheral blood CD4 lymphocyte count ≤350/μL) underwent lumbar puncture (LP) at a median time of 8.2 months post treatment. ANS was diagnosed by a reactive cerebrospinal fluid (CSF) RPR test or CSF white blood cells (WBC) >20/μL plus a reactive CSF Treponema pallidum particle agglutination (TPPA) ≥1:640...
February 14, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28193743/yaws-osteoperiostitis-treated-with-single-dose-azithromycin
#5
Camila González-Beiras, Martí Vall-Mayans, Ángel González-Escalante, Kelly McClymont, Li Ma, Oriol Mitjà
The etiologic agent of yaws, Treponema pallidum subsp. pertenue, causes a multistage infection transmitted by nonsexual contact with the exudates from active lesions. Bone lesions in the form of osteoperiostitis are common and occur in numerous bones simultaneously in early stages. Although a multinational eradication campaign with mass administration of intramuscular benzylpenicillin in the 1950s greatly reduced its global incidence, a resurgence of yaws has occurred since around 2000 in western and central Africa and the Pacific Islands...
February 13, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28168761/functional-clues-from-the-crystal-structure-of-an-orphan-periplasmic-ligand-binding-protein-from-treponema-pallidum
#6
Chad A Brautigam, Ranjit K Deka, Wei Z Liu, Diana R Tomchick, Michael V Norgard
The spirochete Treponema pallidum is the causative agent of syphilis, a sexually transmitted infection of major global importance. Other closely related subspecies of Treponema also are the etiological agents of the endemic treponematoses, such as yaws, pinta, and bejel. The inability of T. pallidum and its close relatives to be cultured in vitro has prompted efforts to characterize T. pallidum's proteins structurally and biophysically, particularly those potentially relevant to treponemal membrane biology, with the goal of possibly revealing the functions of those proteins...
February 7, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28164598/analysis-of-biochemical-features-of-hepatitis-b-virus-infected-patients-in-southwest-china
#7
Yuzhu Song, Yunsong Shen, Wencheng Lu, Xueshan Xia, A-Mei Zhang
BACKGROUND: Hepatitis B is one of the most common infectious diseases in China, and it is necessary to study biochemical indicators of HBV infected patients. METHODS: Biochemical and basic features of 1765 HBV infected patients and 840 general controls were collected and analyzed from Southwest China. RESULTS: A total of 23.5% of the patients were children or young persons (less than 40 years old). The co-infected rate was only 0.3% for those who were co-infected with Hepatitis C virus (HCV) or Treponema pallidum (TPa)...
September 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28163288/clinical-significance-of-human-intestinal-spirochetosis-a-retrospective-study
#8
Satoko Umeda, Hiroshi Serizawa, Taku Kobayashi, Takahiko Toyonaga, Eiko Saito, Masaru Nakano, Hajime Higuchi, Satoshi Tsunematsu, Noriaki Watanabe, Toshifumi Hibi, Shojiro Morinaga
The clinical and pathological features of human intestinal spirochetosis (HIS) are not well known. Here we report 55 patients with HIS who were diagnosed at our institution during the past 5 years. Seven patients presented with symptoms such as abdominal pain or diarrhea, while the others were incidentally diagnosed during screening colonoscopy. Most patients had non-specific endoscopic findings, including intestinal edema or erosion. The diagnosis of HIS was histologically confirmed via hematoxylin and eosin staining, periodic acid-Schiff staining, and/or immunohistochemistry using anti-Treponema pallidum antibody...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28161356/a-retrospective-cross-sectional-quantitative-molecular-approach-in-biological-samples-from-patients-with-syphilis
#9
Miguel Pinto, Minia Antelo, Rita Ferreira, Jacinta Azevedo, Irene Santo, Maria José Borrego, João Paulo Gomes
Syphilis is the sexually transmitted disease caused by Treponema pallidum, a pathogen highly adapted to the human host. As a multistage disease, syphilis presents distinct clinical manifestations that pose different implications for diagnosis. Nevertheless, the inherent factors leading to diverse disease progressions are still unknown. We aimed to assess the association between treponemal loads and dissimilar disease outcomes, to better understand syphilis. We retrospectively analyzed 309 DNA samples distinct anatomic sites associated with particular syphilis manifestations...
February 2, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28158226/htlv-1-is-predominantly-sexually-transmitted-in-salvador-the-city-with-the-highest-htlv-1-prevalence-in-brazil
#10
David Nunes, Ney Boa-Sorte, Maria Fernanda Rios Grassi, Graham P Taylor, Maria Gloria Teixeira, Mauricio L Barreto, Inês Dourado, Bernardo Galvão-Castro
BACKGROUND: Salvador is the city with the highest number of HTLV-1 infected individuals in Brazil, yet the main route of HTLV-1 transmission is unknown. OBJECTIVE: To investigate the association of syphilis infection as a proxy for sexual transmission of HTLV-1 infection in the general population of this city. METHODS: A cross sectional population-based study was conducted with 3,451 serum samples obtained by a representative simple random sampling...
2017: PloS One
https://www.readbyqxmd.com/read/28145405/a-defined-syphilis-vaccine-candidate-inhibits-dissemination-of-treponema-pallidum-subspecies-pallidum
#11
Karen V Lithgow, Rebecca Hof, Charmaine Wetherell, Drew Phillips, Simon Houston, Caroline E Cameron
Syphilis is a prominent disease in low- and middle-income countries, and a re-emerging public health threat in high-income countries. Syphilis elimination will require development of an effective vaccine that has thus far remained elusive. Here we assess the vaccine potential of Tp0751, a vascular adhesin from the causative agent of syphilis, Treponema pallidum subsp. pallidum. Tp0751-immunized animals exhibit a significantly reduced bacterial organ burden upon T. pallidum challenge compared with unimmunized animals...
February 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/28129372/costing-of-national-sti-program-implementation-for-the-global-sti-control-strategy-for-the-health-sector-2016-2021
#12
Eline L Korenromp, Teodora Wi, Stephen Resch, John Stover, Nathalie Broutet
INTRODUCTION: In 2016 the World Health Assembly adopted the global strategy on Sexually Transmitted Infections (STI) 2016-2021 aiming to reduce curable STIs by 90% by 2030. We costed scaling-up priority interventions to coverage targets. METHODS: Strategy-targeted declines in Chlamydia trachomatis, Neisseria gonorrhoeae, Treponema pallidum and Trichomonas vaginalis were applied to WHO-estimated regional burdens at 2012. Syndromic case management was costed for these curable STIs, symptomatic Herpes Simplex Virus 2 (HSV-2), and non-STI vaginal syndromes, with incrementally expanding etiologic diagnosis...
2017: PloS One
https://www.readbyqxmd.com/read/28126263/treponema-pallidum-flagellins-elicit-proinflammatory-cytokines-from-human-monocytes-via-tlr5-signaling-pathway
#13
Man Xu, Yafeng Xie, Chuanhao Jiang, Yongjian Xiao, Xingxing Kuang, Yating Wen, Yuan Tan, Manyi Tan, Feijun Zhao, Tiebing Zeng, Yimou Wu
The tissue damage caused by syphilis infection may be associated with inflammation. However, the virulence factors of Treponema pallidum are still unclear, nor are the molecular mechanisms for leading to the productions of proinflammatory cytokines. Flagellin, a classic pathogen-associated molecular pattern (PAMP), is a potent immunogen that induces inflammation. In the present study, we have demonstrated that stimulations of human monocytes with Treponema pallidum FlaB1, FlaB2, and FlaB3 result in the up regulation of interleukin (IL)-6 and IL-8...
January 21, 2017: Immunobiology
https://www.readbyqxmd.com/read/28126049/molecular-epidemiological-survey-of-treponema-pallidum-in-pregnant-women-in-the-zhabei-district-of-shanghai
#14
Yingying Lu, Qi Wu, Li Wang, Lingting Ji
:  Objectives: To evaluate the epidemiological characteristics of syphilis, such as incidence, vertical transmission, and genotypes, in pregnant women in the Zhabei District of Shanghai. In addition, the changes in genotypes and the efficiency of genotyping was evaluated. METHODS: We screened 3,022 pregnant women for syphilis in the Shanghai Zhabei Central Hospital; Whole blood , plasma, earlobe blood, and specimens from genital ulcers or skin/mucosal lesions were collected from syphilis positive patients...
January 24, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28125925/an-unusual-case-of-reversible-mild-cognitive-impairment
#15
R K Mahajan, Shweta Sharma, Vikas Dhikav, K S Anand, Nandini Duggal
Mild cognitive impairment (MCI) is cognitive dysfunction greater than expected for age and education in either a single cognitive domain or in multiple domains without impairment of activities of daily living. The present case report describes the case of an elderly male patient of 71 years who presented with MCI and was Venereal Disease Research Laboratory test reactive in serum. This was confirmed by Treponema pallidum Hemagglutination Assay. After a complete course of antibiotic therapy, his memory complaints disappeared completely...
January 26, 2017: Neurocase
https://www.readbyqxmd.com/read/28093460/a-double-edged-sword-does-highly-active-antiretroviral-therapy-contribute-to-syphilis-incidence-by-impairing-immunity-to-treponema-pallidum
#16
REVIEW
Michael L Rekart, Wilfred Ndifon, Robert C Brunham, Jonathan Dushoff, Sang Woo Park, Sanjana Rawat, Caroline E Cameron
BACKGROUND AND HYPOTHESIS: Recently, the world has experienced a rapidly escalating outbreak of infectious syphilis primarily affecting men who have sex with men (MSM); many are taking highly active antiretroviral therapy (HAART) for HIV-1 infection. The prevailing hypothesis is that HAART availability and effectiveness have led to the perception among both individuals who are HIV-1 infected and those who are uninfected that HIV-1 transmission has become much less likely, and the effects of HIV-1 infection less deadly...
January 16, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28079920/serum-microrna-profiles-in-patients-with-syphilis
#17
Ping Lu, Chang Fang, Qing Cheng, Wu-Jian Ke, Tao Huang, Jun Zhang, He-Ping Zheng, Bin Yang
Syphilis is an acute and chronic inflammatory disorder caused by the non-cultivatable spirochete Treponema pallidum subsp. pallidum (T. pallidum).(1,2) T. pallidum does not produce any known toxic proteins; therefore, most of the symptoms and tissue damage related to syphilis are caused by activation of the host's inflammatory and immune responses,(3) thus suggesting that host genetics play an important role in regulating the progression of syphilis infection. MiRNAs are a class of 19- to 24-nt noncoding RNAs that influence many biological systems, including development, cellular differentiation, proliferation, apoptosis, metabolism, and the immune response;(4-6) they also play crucial roles during microbial infection...
January 12, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28058468/-nonviral-sexually-transmitted-infections-epidemiology-clinical-manifestations-diagnostic-workup-therapy-part%C3%A2-3-treponemes-gardnerella-and-trichomonads
#18
REVIEW
P Nenoff, A Manos, I Ehrhard, C Krüger, U Paasch, P Helmbold, W Handrick
In Germany, the reported syphilis prevalence has increased continuously since 2010, with a total of 6834 syphilis cases being reported in 2015. The largest increase of reported syphilis occurred in men who have sex with men (MSM). The antibiotic agent of choice for treatment of syphilis is still penicillin. There are no penicillin-resistant Treponema pallidum strains. Alternatives are ceftriaxone and doxycycline. In Germany, azithromycin is not approved for treatment of syphilis; however, therapy failures are increasingly reported...
January 5, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28033297/could-lengthening-minocycline-therapy-better-treat-early-syphilis
#19
Li-Li Shao, Rui Guo, Wei-Jie Shi, Yuan-Jun Liu, Bin Feng, Long Han, Quan-Zhong Liu
Syphilis is a sexually transmitted disease caused by Treponema pallidum. Minocycline, a representative tetracycline derivative, has the greatest antimicrobial activity among all tetracyclines. There are few reports about treating syphilis with minocycline because there is a lack of efficacy data from controlled trials. We compared the rates of serological cure in patients with early syphilis who were treated with minocycline or benzathine penicillin G (BPG).During the study period, a total of 40 syphilis patients received the BPG treatment, which was a single intramuscular dose of 2...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28029229/on-site-test-to-detect-syphilis-in-pregnancy-a-systematic-review-of-test-accuracy-studies
#20
REVIEW
E Rogozińska, L Kara-Newton, J R Zamora, K S Khan
BACKGROUND: Syphilis in pregnancy can lead to fetal and neonatal death or congenital anomalies. Accurate on-site tests are an essential part of effective prevention of mother-to-child transmission of the disease. OBJECTIVE: This systematic review assessed the accuracy of on-site tests to detect infection with Treponema pallidum in pregnant women. SEARCH STRATEGY: Major databases were searched from inception to January 2016 using terms: 'pregnancy', 'antenatal', 'syphilis', 'Treponema pallidum' with their variations, and the search limit for the relevant study design...
December 28, 2016: BJOG: An International Journal of Obstetrics and Gynaecology
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