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Scrub typhus

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https://www.readbyqxmd.com/read/28419138/clinical-significance-of-ngal-and-kim-1-for-acute-kidney-injury-in-patients-with-scrub-typhus
#1
In O Sun, Sung Hye Shin, A Young Cho, Hyun Ju Yoon, Mi Yok Chang, Kwang Young Lee
BACKGROUND: The aim of this study is to investigate the clinical significance of neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) for acute kidney injury (AKI) in patients with scrub typhus. METHODS: From 2014 to 2015, 145 patients were diagnosed with scrub typhus. Of these, we enrolled 138 patients who were followed up until renal recovery or for at least 3 months. We measured serum and urine NGAL and KIM-1 levels and evaluated prognostic factors affecting scrub typhus-associated AKI...
2017: PloS One
https://www.readbyqxmd.com/read/28412201/nitric-oxide-enhanced-the-growth-of-an-obligated-intracellular-bacterium-orientia-tsutsugamushi-in-murine-macrophages
#2
Motohiko Ogawa, Masaaki Satoh, Michiyo Kataoka, Shuji Ando, Masayuki Saijo
Orientia tsutsugamushi is the causative agent of scrub typhus. It is an obligate intracellular bacterium that grows only in eukaryotic cells. Macrophages play an important role in innate immunity by surveilling the human body for pathogens. In present study, it was demonstrated that O. tsutsugamushi propagated well in LPS-activated RAW 264.7 macrophages, but not in non-activated macrophages. In LPS-activated macrophages, the expression of Nos2, which encodes the inducible nitric oxide (NO) synthase (iNOS), was highly upregulated compared to those in non-activated macrophages...
April 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28407761/acute-phase-diagnosis-of-murine-and-scrub-typhus-in-belgian-travelers-by-polymerase-chain-reaction-a-case-report
#3
Caroline Theunissen, Lieselotte Cnops, Marjan Van Esbroeck, Ralph Huits, Emmanuel Bottieau
No abstract text is available yet for this article.
April 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28405985/clinical-profile-and-complications-of-scrub-typhus-hospital-based-study-in-sub-himalayan-region
#4
Ritesh Kumar, Surinder Thakur, Rajesh Bhawani, Anil Kanga, Asha Ranjan
BACKGROUND: Scrub typhus is a documented disease in Himachal Pradesh, but there have been no clinico-epidemiological studies in this area. The present study is done with IgM ELISA as a diagnostic test which has higher sensitivity and specificity as most of previous studies had used Weil Felix test as a diagnostic test. METHODOLOGY: This was a prospective observational study. All the patients more than 18 years of age with positive IgM ELISA for scrub typhus with or without eschar were included...
December 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28386493/dengue-and-scrub-typhus-coinfection-in-a-patient-presenting-with-febrile-illness
#5
Surendra Sapkota, Sudeep Bhandari, Subash Sapkota, Rabin Hamal
Dengue fever and scrub typhus are common causes of acute febrile illness of unclear origin in Asia. Though coinfections of many vector-borne diseases have been described, articles on dengue and scrub typhus coinfection are distinctly limited. In case of coinfection with dengue and scrub typhus, vigilant monitoring of vitals, platelets transfusion, and timely treatment with doxycycline are necessary. High degree of suspicion has to be made for coinfection in a patient presenting with febrile illness with thrombocytopenia and deranged laboratory parameters in postmonsoon season in endemic regions in Asia...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28361787/iap-guidelines-on-rickettsial-diseases-in-children
#6
Narendra Rathi, Atul Kulkarni, Vijay Yewale
OBJECTIVE: To formulate practice guidelines on rickettsial diseases in children for pediatricians across India. JUSTIFICATION: Rickettsial diseases are increasingly being reported from various parts of India. Due to low index of suspicion, nonspecific clinical features in early course of disease, and absence of easily available, sensitive and specific diagnostic tests, these infections are difficult to diagnose. With timely diagnosis, therapy is easy, affordable and often successful...
March 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28356672/scrub-typhus-meningitis-in-a-renal-transplant-recipient
#7
J Dhanapriya, T Dineshkumar, R Sakthirajan, S Murugan, V Jayaprakash, T Balasubramaniyan, N Gopalakrishnan
Scrub typhus is a rickettsial infection commonly seen in Asia. The clinical presentation ranges from nonspecific febrile illness to potentially fatal multiorgan involvement such as liver, kidney, or lung. Central nervous system involvement is uncommon. We report a 45-year-old female renal transplant recipient who presented with fever, headache, meningeal signs, graft dysfunction, and eschar. IgM antibodies against Orientia tsutsugamushi were positive by enzyme-linked immunosorbent assay. Despite oral doxycycline therapy for 5 days, she did not improve but responded well to intravenous azithromycin...
March 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28298367/incidence-risk-factors-and-clinical-outcomes-of-acute-kidney-injury-associated-with-scrub-typhus-a-retrospective-study-of-510-consecutive-patients-in-south-korea-2001-2013
#8
Kyungo Hwang, Ha Nee Jang, Tae Won Lee, Hyun Seop Cho, Eunjin Bae, Se-Ho Chang, Dong Jun Park
OBJECTIVES: Renal involvement in scrub typhus ranges from simple urinary abnormalities to acute kidney injury (AKI) leading to death. This study evaluated the incidence, predictors and prognosis of AKI associated with scrub typhus according to the RIFLE (risk, injury, failure, loss, end-stage kidney disease) criteria. METHODS: We retrospectively evaluated the medical records of patients diagnosed with scrub typhus from January 2001 to November 2013 in Gyeongsang National University Hospital...
March 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28291501/lateral-flow-rapid-test-for-accurate-and-early-diagnosis-of-scrub-typhus-a-febrile-illness-of-historically-military-importance-in-the-pacific-rim
#9
Chien-Chung Chao, Zhiwen Zhangm, Giulia Weissenberger, Hua-Wei Chen, Wei-Mei Ching
Scrub typhus (ST) is an infection caused by Orientia tsutsugamushi. Historically, ST was ranked as the second most important arthropod-borne medical problem only behind malaria during World War II and the Vietnam War. The disease occurs mainly in Southeast Asia and has been shown to emerge and reemerge in new areas, implying the increased risk for U.S. military and civilian personnel deployed to these regions. ST can effectively be treated by doxycycline provided the diagnosis is made early, before the development of severe complications...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28282373/murine-models-of-scrub-typhus-associated-with-host-control-of-orientia-tsutsugamushi-infection
#10
Nicole L Mendell, Donald H Bouyer, David H Walker
BACKGROUND: Scrub typhus, a febrile illness of substantial incidence and mortality, is caused by infection with the obligately intracellular bacterium Orientia tsutsugamushi. It is estimated that there are more than one million cases annually transmitted by the parasitic larval stage of trombiculid mites in the Asia-Pacific region. The antigenic and genetic diversity of the multiple strains of O. tsutsugamushi hinders the advancement of laboratory diagnosis, development of long-lasting vaccine-induced protection, and interpretation of clinical infection...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28273989/healthcare-associated-infections-in-a-resource-limited-setting
#11
Chanaveerappa Bammigatti, Saikumar Doradla, Harish Narasimha Belgode, Harichandra Kumar, Rathinam Palamalai Swaminathan
INTRODUCTION: Health Care associated Infections (HAI) are the most common complications affecting the hospitalized patients. HAI are more common in developing and under developed countries. However, there are no systematic surveillance programs in these countries. AIM: To find out the burden, predisposing factors and multidrug resistant organisms causing HAI in a resource limited setting. MATERIALS AND METHODS: This prospective observational study was done at Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER)...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28273079/climate-variability-animal-reservoir-and-transmission-of-scrub-typhus-in-southern-china
#12
Yuehong Wei, Yong Huang, Xiaoning Li, Yu Ma, Xia Tao, Xinwei Wu, Zhicong Yang
OBJECTIVES: We aimed to evaluate the relationships between climate variability, animal reservoirs and scrub typhus incidence in Southern China. METHODS: We obtained data on scrub typhus cases in Guangzhou every month from 2006 to 2014 from the Chinese communicable disease network. Time-series Poisson regression models and distributed lag nonlinear models (DLNM) were used to evaluate the relationship between risk factors and scrub typhus. RESULTS: Wavelet analysis found the incidence of scrub typhus cycled with a period of approximately 8-12 months and long-term trends with a period of approximately 24-36 months...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28260341/-study-of-epidemic-area-on-tsutsugamushi-disease-in-taizhou-from-2013-to-2014
#13
Y L He, H Y Yang, C X Yu, X Zhang, Q H Yi, Z L Ma, J Cha, X B Xu, Q Zhang, W J Dai, W J Qian, J Yin, S J Zhu, Z Xu
Objective: To study the epidemiological characteristics of tsutsugamushi disease, and to confirm the existence of the disease's epidemic foci in Taizhou. Methods: From 2013 to 2014, Dongxing town hospital and Xingqiao town hospital were selected as specimen collection sites in Jingjiang city. Blood samples (5 ml) were collected from 40 patients with acute tsutsugamushi disease. A total of 59 rodents were captured with cage night method in the survey sites at 5, 7, 9, 10, and 11 months in 2013, from which, the spleen, liver, and kidney specimens were selected...
March 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28256470/molecular-characterization-of-orientia-tsutsugamushi-serotypes-causing-scrub-typhus-outbreak-in-southern-region-of-andhra-pradesh-india
#14
K Usha, E Kumar, Usha Kalawat, B Siddhartha Kumar, A Chaudhury, D V R Sai Gopal
BACKGROUND & OBJECTIVES: Scrub typhus is a vector-borne zoonotic infection caused by Orientiatsutsugamushi. Local epidemiology of the circulating serotypes of scrub typhus is not available from most parts of India. We conducted this study for the diagnosis of scrub typhus using IgM ELISA and to detect O. tsutsugamushi serotypes circulating in southern Andhra Pradesh, India. METHODS: Samples were collected from patients clinically suspected to have scrub typhus and were subjected to IgM ELISA to measure IgM antibodies against O...
October 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28250620/clinical-score-to-differentiate-scrub-typhus-and-dengue-a-tool-to-differentiate-scrub-typhus-and-dengue
#15
Shubhanker Mitra, Ira Gautam, Mohan Jambugulam, Kundavaram Paul Prabhakar Abhilash, Vishalakshi Jayaseeelan
BACKGROUND: Dengue and scrub typhus share similar clinical and epidemiological features, and are difficult to differentiate at initial presentation. Many places are endemic to both these infections where they comprise the majority of acute undifferentiated febrile illnesses. MATERIALS AND METHODS: We aimed to develop a score that can differentiate scrub typhus from dengue. In this cross-sectional study, 188 cases of scrub typhus and 201 cases of dengue infection who presented to the emergency department or medicine outpatient clinic from September 2012 to April 2013 were included...
January 2017: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/28248956/diversification-of-orientia-tsutsugamushi-genotypes-by-intragenic-recombination-and-their-potential-expansion-in-endemic-areas
#16
Gwanghun Kim, Na-Young Ha, Chan-Ki Min, Hong-Il Kim, Nguyen Thi Hai Yen, Keun-Hwa Lee, Inbo Oh, Jae-Seung Kang, Myung-Sik Choi, Ik-Sang Kim, Nam-Hyuk Cho
BACKGROUND: Scrub typhus is a mite-borne febrile disease caused by O. tsutsugamushi infection. Recently, emergence of scrub typhus has attracted considerable attention in several endemic countries in Asia and the western Pacific. In addition, the antigenic diversity of the intracellular pathogen has been a serious obstacle for developing effective diagnostics and vaccine. METHODOLOGY/PRINCIPAL FINDINGS: To understand the evolutionary pathway of genotypic diversification of O...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28241043/use-of-eschar-swabbing-for-the-molecular-diagnosis-and-genotyping-of-orientia-tsutsugamushi-causing-scrub-typhus-in-quang-nam-province-vietnam
#17
Nhiem Le Viet, Maureen Laroche, Hoa L Thi Pham, Nho L Viet, Oleg Mediannikov, Didier Raoult, Philippe Parola
BACKGROUND: Scrub typhus is a rickettsiosis which is caused by Orientia tsutsugamushi and occurs throughout the Asia-Pacific region. Molecular diagnosis of rickettsioses using eschar swabs has recently emerged, and may be very useful for the diagnosis of these diseases in tropical settings. METHODOLOGY/PRINCIPAL FINDINGS: Quantitative polymerase chain reaction (qPCR) was used to detect O. tsutsugamushi DNA in whole blood and eschar swab specimens of 67 patients who were clinically suspected of scrub typhus in Quang Nam province, Vietnam...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28239760/incidence-and-outcome-of-acute-cardiorenal-syndrome-in-hospitalized-children
#18
Vivek Athwani, Maneesha Bhargava, Rahul Chanchlani, Amar Jeet Mehta
OBJECTIVES: To determine the incidence, etiology and outcome of Cardiorenal syndrome (CRS) in hospitalized children. METHODS: A prospective cohort study was carried out in 242 children between 6 mo to 18 y of age hospitalized with primary cardiac, renal or any systemic disorder at a tertiary care center in India. The primary outcome was the development of CRS. Univariate and multivariate logistic regression analysis were performed to determine the risk of mortality secondary to CRS...
February 27, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28226202/predictors-of-acute-myocarditis-in-complicated-scrub-typhus-an-endemic-province-in-the-republic-of-korea
#19
Jung Yeon Chin, Ki-Woon Kang, Kyung Min Moon, Jongwoo Kim, Yu Jeong Choi
Background/Aims: Scrub typhus is known as a self-limited infectious disease. Cardiac complication is uncommon and usually not life-threatening. Until now, few cases of fulminant myocarditis by scrub typhus have been reported. So, we investigated incidence and predictors of acute myocarditis in severe scrub typhus. Methods: We retrospectively reviewed 89 patients among 91 scrub typhus confirmed patients who examined an echocardiogram and cardiac biomarkers from 2005 to 2015 in the intensive care unit at our hospital...
February 23, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28202789/use-of-multiplex-real-time-pcr-to-diagnose-scrub-typhus
#20
Wiwit Tantibhedhyangkul, Ekkarat Wongsawat, Saowaluk Silpasakorn, Duangdao Waywa, Nuttawut Saenyasiri, Jintapa Suesuay, Wilawan Thipmontree, Yupin Suputtamongkol
Scrub typhus, caused by Orientia tsutsugamushi, is a common cause of acute undifferentiated febrile illness in the Asia--Pacific region. However, its non-specific clinical manifestation often prevents early diagnosis. We propose the use of PCR and serologic tests as diagnostic tools. Here, we developed a multiplex real-time PCR assay using hydrolysis (Taqman) probes targeting O. tsutsugamushi47-kDa, groEL, and human IFNB genes to improve early diagnosis of scrub typhus. The amplification efficiency was higher than 94%, and the lower detection limit was 10 copies per reaction...
February 15, 2017: Journal of Clinical Microbiology
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