scholarly journals Cytokine, Chemokine, and Metalloprotease Activation in the Serum of Patients with Nephropathia Epidemica from the Republic of Tatarstan and the Republic of Mordovia, Russia

Pathogens ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 527
Author(s):  
Ekaterina Martynova ◽  
Yuriy Davidyuk ◽  
Emmanuel Kabwe ◽  
Ekaterina E. Garanina ◽  
Venera Shakirova ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Hemorrhagic Fever ◽  
Human Infection ◽  
Nephropathia Epidemica ◽  
Matrix Metalloproteases ◽  
Genetic Lineage ◽  
Serum Cytokine ◽  
Serum Samples ◽  
Leukocyte Chemotaxis ◽  
The Republic

Nephropathia Epidemica (NE), endemic to several Volga regions of Russia, including the Republic of Tatarstan (RT) and the Republic of Mordovia (RM), is a mild form of hemorrhagic fever with renal syndrome caused by infection with rodent-borne orthohantaviruses. Although NE cases have been reported for decades, little is known about the hantavirus strains associated with human infection in these regions. There is also limited understanding of the pathogenesis of NE in the RT and the RM. To address these knowledge gaps, we conducted comparative analyses of patients with NE in the RT and the RM. Clinical symptoms were more severe in patients with NE from the RM with longer observed duration of fever symptoms and hospitalization. Analysis of patient sera showed changes in the levels of numerous cytokines, chemokines, and matrix metalloproteases (MMPs) in patients with NE from both the RT and the RM, suggesting leukocyte activation, extracellular matrix degradation, and leukocyte chemotaxis. Interestingly, levels of several cytokines were distinctly different between patients NE from the RT when compared with those from the RM. These differences were not related to the genetic variation of orthohantaviruses circulating in those regions, as sequence analysis showed that Puumala virus (PUUV) was the causative agent of NE in these regions. Additionally, only the “Russia” (RUS) genetic lineage of PUUV was detected in the serum samples of patients with NE from both the RT and the RM. We therefore conclude that differences in serum cytokine, chemokine, and MMP levels between the RT and the RM are related to environmental factors and lifestyle differences that influence individual immune responses to orthohantavirus infection.

scholarly journals The Distribution of Puumala orthohantavirus Genome Variants Correlates with the Regional Landscapes in the Trans-Kama Area of the Republic of Tatarstan

Pathogens ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1169
Author(s):  
Yuriy N. Davidyuk ◽  
Emmanuel Kabwe ◽  
Anton F. Shamsutdinov ◽  
Anna V. Knyazeva ◽  
Ekaterina V. Martynova ◽  
...  
Keyword(s):  
Bank Vole ◽  
Phylogenetic Analyses ◽  
Genetic Material ◽  
Hemorrhagic Fever ◽  
Federal District ◽  
Genetic Lineage ◽  
Bank Voles ◽  
European Part Of Russia ◽  
The Republic ◽  
River Valleys

In the European part of Russia, the highest number of hemorrhagic fever with renal syndrome (HFRS) cases are registered in the Volga Federal District (VFD), which includes the Republic of Tatarstan (RT). Puumala orthohantavirus (PUUV) is the main causative agent of HFRS identified in the RT. The goal of the current study is to analyze the genetic variations of the PUUV strains and possible presence of chimeric and reassortant variants among the PUUV strains circulating in bank vole populations in the Trans-Kama area of the RT. Complete S segment CDS as well as partial M and L segment coding nucleotide sequences were obtained from 40 PUUV-positive bank voles and used for the analysis. We found that all PUUV strains belonged to RUS genetic lineage and clustered in two subclades corresponding to the Western and Eastern Trans-Kama geographic areas. PUUV strains from Western Trans-Kama were related to the previously identified strain from Teteevo in the Pre-Kama area. It can be suggested that the PUUV strains were introduced to the Teteevo area as a result of the bank voles’ migration from Western Trans-Kama. It also appears that physical obstacles, including rivers, could be overcome by migrating rodents under favorable circumstances. Based on results of the comparative and phylogenetic analyses, we propose that bank vole distribution in the Trans-Kama area occurred upstream along the river valleys, and that watersheds could act as barriers for migrations. As a result, the diverged PUUV strains could be formed in closely located populations. In times of extensive bank vole population growth, happening every 3–4 years, some regions of watersheds may become open for contact between individual rodents from neighboring populations, leading to an exchange of the genetic material between divergent PUUV strains.

scholarly journals Study of the prevalence of antibodies to some arboviruses in the population of the Republic of Guinea

2021 ◽  
Vol 66 (5) ◽  
pp. 346-353
Author(s):  
E. V. Naidenova ◽  
M. Yu. Kartashov ◽  
K. S. Zakharov ◽  
A. P. Shevtsova ◽  
M. G. Diallo ◽  
...  
Keyword(s):  
Clinical Signs ◽  
Hemorrhagic Fever ◽  
Serum Samples ◽  
African Region ◽  
Republic Of Guinea ◽  
Disease Patterns ◽  
Urgent Task ◽  
The Republic ◽  
Total Structure ◽  
Batai Virus

Introduction. Acute febrile diseases kill more than 250,000 people annually in West Africa. Malaria and typhoid fever traditionally occupy most of the total structure of registered fevers. However, these data do not fully reflect the true overall disease patterns in the West African region. This is due to the fact that diagnosis is mainly based on the clinical signs of the infectious process, suggesting that a certain number of diseases may be caused by arboviruses. The detection of specific antibodies (ABs) to infectious pathogens in the blood sera of residents of a particular area is a reliable indicator of the circulation of these pathogens in a particular territory.The aim of this study was to determine the prevalence of antibodies to a number of arboviruses: Dengue (DENV), West Nile (WNV) (family Flaviviridae), Crimean-Congo hemorrhagic fever (orthonairo)virus (CCHFV), Batai (Batai virus), Bhanja (BHAV) (order Bunyavirales), Chikungunya (CHIKV), and Sindbis (SINV) (family Togaviridae) in the population of the Republic of Guinea.Material and methods. In total, a panel of 2,620 blood serum samples from people living in all landscape and geographical areas of Guinea was collected for the study. Detection of IgG antibodies was performed using an enzyme-linked immunoassay (ELISA).Results. In total, ABs to Batai virus were detected in 144 samples (5.5%), BHAV in 58 (2.2%), WNV in 892 (34.0 %), DENV in 659 (25.2 %), CCHFV in 58 (2.2 %), CHIKV in 339 (12.9 %), and SINV in 52 samples (2.0 %).Discussion. The obtained results indicate serological evidence of the spectrum of arboviruses in the population of all landscape and geographical zones of the Republic of Guinea, confirming their active circulation in this territory.Conclusion. Given the high epidemiological significance of arbovirus infectious diseases, it is an urgent task to continue studying its share in the structure of febrile diseases in the territory of the Republic of Guinea.

scholarly journals Facing of Family Doctor with Hantavirus Infection

2019 ◽  
Vol 7 (10) ◽  
pp. 1660-1664
Author(s):  
Valentina Risteska-Nejasmic ◽  
Daniela Ristikj-Stomnaroska ◽  
Golubinka Bosevska ◽  
Anna Papa ◽  
Snezhana Stojkovska
Keyword(s):  
Renal Failure ◽  
Acute Renal Failure ◽  
Family Doctor ◽  
Hemorrhagic Fever ◽  
Human Infection ◽  
Hantavirus Infection ◽  
Family Doctors ◽  
Increased Risk ◽  
The Republic ◽  
Initiation Of Therapy

BACKGROUND: Hantavirus infection is manifested as an urgent, severe and life-threatening disease caused by Hantavirus. The virus affects human endothelial cells. The natural reservoir of the Hantaviruses is chronically infected rodents. Human infection is accidental. Occurs by intake of contaminated food or inhalation of contaminated secretion from infected rodents' excretions have an increased risk of contamination. The most affected persons are people who work in nature. The virus causes haemorrhages, fever and acute renal failure. The disease appears more frequently in endemic regions with the lethality of 6-15%. The disease can surprise doctors with severity, urgency and undefined clinical picture. Fast clinical evaluation, proper and urgent diagnosis and treatment can improve the safe life of these patients. CASE REPORT: We report a case of 45 -year-old male patient worked as a shepherd on mountain Babuna near the city of Veles in the Republic of Macedonia at the end of the summer in the year 2017, presented with prolonged hemorrhagic fever with renal syndrome. The clinical presentation and lab findings support the diagnosis of Hantavirus infection with acute renal failure. CONCLUSION: It is necessary to raise the awareness of the family doctors for the hantavirus disease, especially in countries with sporadic cases, as in our country. It needs for prompt and timely diagnosis, timely hospitalisation and initiation of therapy.

scholarly journals Mayaro virus: imported cases of human infection in São Paulo State, Brazil

2007 ◽  
Vol 49 (4) ◽  
pp. 221-224 ◽  
Author(s):  
Terezinha Lisieux M. Coimbra ◽  
Cecília L. S. Santos ◽  
Akemi Suzuki ◽  
Selma M. C. Petrella ◽  
Ivani Bisordi ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Polyclonal Antibodies ◽  
Correct Diagnosis ◽  
Febrile Illness ◽  
Human Infection ◽  
Serum Samples ◽  
Newborn Mice ◽  
Hemagglutination Inhibition Test ◽  
Imported Cases ◽  
Mayaro Virus

Mayaro virus (MAYV) is an arbovirus (Togaviridae: Alphavirus) enzootic in tropical South America and maintained in a sylvan cycle involving wild vertebrates and Haemagogus mosquitoes. MAYV cases occur sporadically in persons with a history of recent activities inside or around forests. This paper reports three cases of MAYV fever detected in men infected in Camapuã, MS, Brazil. Serum samples collected at four days and two months after the onset of the symptoms and examined by hemagglutination inhibition test, revealed monotypic seroconversion to MAYV. Isolation of the virus was obtained from one of the samples by inoculation of the first blood samples into newborn mice. A suspension of the infected mouse brain was inoculated into C6/36 cells culture and the virus was identified by indirect immunofluorescent assay with alphavirus polyclonal antibodies. RT-PCR, performed with RNA extracted from the supernatant of C6/36 infected cells in the presence of alphavirus generic primers as well as specific MAYV primers, confirmed these results. The reported cases illustrate the importance of laboratory confirmation in establishing a correct diagnosis. Clinical symptoms are not always indicative of a disease caused by an arbovirus. Also MAYV causes febrile illness, which may be mistaken for dengue.

scholarly journals Prevalence of the Puumala orthohantavirus Strains in the Pre-Kama Area of the Republic of Tatarstan, Russia

Pathogens ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 540 ◽  
Author(s):  
Yuriy Davidyuk ◽  
Anton Shamsutdinov ◽  
Emmanuel Kabwe ◽  
Ruzilya Ismagilova ◽  
Ekaterina Martynova ◽  
...  
Keyword(s):  
Hemorrhagic Fever ◽  
Federal District ◽  
European Part ◽  
Genome Segment ◽  
Genetic Lineage ◽  
Geographical Distance ◽  
Mild Form ◽  
Bank Voles ◽  
European Part Of Russia ◽  
The Republic

Puumala orthohantavirus (PUUV) causes nephropathia epidemica (NE), a mild form of hemorrhagic fever with renal syndrome (HFRS) commonly diagnosed in Europe. The majority of HFRS cases in the European part of Russia are diagnosed in the Volga Federal District, which includes the Republic of Tatarstan (RT). The current study aims to analyze the genetic variability of PUUV in Pre-Kama region of the RT bounded by the Volga, Kama, and Vyatka rivers. In 2017, bank voles were caught in seven isolated forest traps in the Pre-Kama region and for the 26 PUUV-positive samples, the partial small (S), medium (M), and large (L) genome segment sequences were obtained and analyzed. It was determined that all identified PUUV strains belong to the Russian (RUS) genetic lineage; however, the genetic distance between strains is not directly correlated with the geographical distance between bank vole populations. One of the identified strains has S and L segments produced from one parental strain, while the M segment was supplied by another, suggesting that this strain could be the reassortant. We suggest that the revealed pattern of the PUUV strains distribution could be the result of a series of successive multidirectional migratory flows of the bank voles to the Pre-Kama region in the postglacial period.

scholarly journals Involvement of poly(ADP-ribose) polymerase-1 in Chinese patients with glioma: a potential target for effective patient care

2017 ◽  
Vol 33 (1) ◽  
pp. 68-72 ◽  
Author(s):  
Jinhong Ren ◽  
Peilan Jia ◽  
Hongxia Feng ◽  
Xiuhua Li ◽  
Jinghui Zhao ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Sandwich Elisa ◽  
Chinese Patients ◽  
Serum Cytokine ◽  
Serum Samples ◽  
Cytokine Levels ◽  
Potential Risk Factors ◽  
Elisa Technique ◽  
Polymerase Chain ◽  
Parp 1

Objective: We aimed to evaluate the genetic variation of poly(ADP-ribose) polymerase-1 (PARP-1) in the development of gliomas among Chinese individuals. Materials and methods: Patients with a confirmed diagnosis of glioma and healthy individuals with no clinical symptoms of glioma were enrolled at Liaocheng People’s Hospital, China. Genetic polymorphisms were studied in plasma samples by polymerase chain reaction-restriction fragment length polymorphism assay. Cytokine levels were measured routinely in serum samples by sandwich ELISA technique. Results: A total of 120 Chinese patients with gliomas and 120 healthy Chinese individuals were included. We found that patients with the GG genotype (odds ratio [OR] 2.53, 95% confidence interval [CI] 1.46-4.38, p<0.001) and carriers of the G allele (OR 11.5, 95% CI 6.31-21.3, p<0.0001) were at high risk of developing glioma. A del/ins polymorphism of the NF-κB1 gene (OR 4.27, 95% CI 2.43-7.50, p<0.001) was also found to be associated with glioma. In addition, significantly increased cytokine levels were observed in patients with glioma (p<0.05). Conclusions: Our findings showed that PARP-1 polymorphisms are involved in the development of glioma in Chinese individuals. Also serum cytokine levels can be considered among the potential risk factors for developing glioma.

scholarly journals Problems and prospects of studying hemorrhagic fever with renal syndrome in the Republic of Tatarstan

2020 ◽  
Vol 101 (5) ◽  
pp. 775-785
Author(s):  
V A Boyko ◽  
T A Savitskaya ◽  
V A Trifonov ◽  
I V Serova ◽  
G Sh Isaeva
Keyword(s):  
Molecular Genetic ◽  
Hemorrhagic Fever ◽  
Laboratory Diagnosis ◽  
Human Infection ◽  
Source Of Infection ◽  
Natural Foci ◽  
History Of ◽  
Genetic Level ◽  
The Republic ◽  
Research Institute

The paper presents the history of the study of hemorrhagic fever with renal syndrome (HFRS) at the Kazan Research Institute of Epidemiology and Microbiology from the beginning of the 50s to the present. The accumulated information allows to draw up general conceptions about the main source of infection, the biological structure of natural foci of infection, nosoarea and the main clinical forms of the disease, the nature and seasonality of the disease, the sex and age composition of patients, and the types of natural foci of HFRS. The stages of improving the methods of laboratory diagnosis of HFRS, development of a specific immunoglobulin against the serum of the Puumala virus are described. A significant contribution to the study of HFRS was the landscape-epidemiological ranking of the territory of the Republic of Tatarstan and the Middle Volga endemic for HFRS, with the identification of zones of special risk of human infection and the main factors that form them. At present, a reference center for monitoring HFRS has been created based on the Kazan Research Institute of Epidemiology and Microbiology, and the study of the properties of HFRS pathogens at the current molecular-genetic level continues.

scholarly journals Immunoglobulin-like Domain of HsFcμR as a Capture Molecule for Detection of Crimean-Congo Hemorrhagic Fever Virus- and Zika Virus-Specific IgM Antibodies

2019 ◽  
Vol 65 (3) ◽  
pp. 451-461 ◽  
Author(s):  
Anne Rackow ◽  
Christa Ehmen ◽  
Ronald von Possel ◽  
Raquel Medialdea-Carrera ◽  
David Brown ◽  
...  
Keyword(s):  
Zika Virus ◽  
Specific Binding ◽  
Hemorrhagic Fever ◽  
Fever Virus ◽  
Size Exclusion ◽  
Animal Origin ◽  
Serum Samples ◽  
Crimean Congo Hemorrhagic Fever ◽  
Hemorrhagic Fever Virus ◽  
Igm Antibodies

Abstract BACKGROUND The cellular surface molecule HsTOSO/FAIM3/HsFcμR has been identified as an IgM-specific Fc receptor expressed on lymphocytes. Here, we show that its extracellular immunoglobulin-like domain (HsFcμR-Igl) specifically binds to IgM/antigen immune complexes (ICs) and exploit this property for the development of novel detection systems for IgM antibodies directed against Crimean-Congo hemorrhagic fever virus (CCHFV) and Zika virus (ZIKV). METHODS His-tagged HsFcμR-Igl was expressed in Escherichia coli and purified by affinity chromatography, oxidative refolding, and size-exclusion chromatography. Specific binding of HsFcμR-Igl to IgM/antigen ICs was confirmed, and 2 prototypic ELISAs for the detection of anti-CCHFV and anti-ZIKV IgM antibodies were developed. Thereby, patient sera and virus-specific recombinant antigens directly labeled with horseradish peroxidase (HRP) were coincubated on HsFcμR-Igl-coated ELISA plates. Bound ICs were quantified by measuring turnover of a chromogenic HRP substrate. RESULTS Assay validation was performed using paired serum samples from 15 Kosovar patients with a PCR-confirmed CCHFV infection and 28 Brazilian patients with a PCR-confirmed ZIKV infection, along with a panel of a priori CCHFV/ZIKV-IgM-negative serum samples. Both ELISAs were highly reproducible. Sensitivity and specificity were comparable with or even exceeded in-house gold standard testing and commercial kits. Furthermore, latex beads coated with HsFcμR-Igl aggregated upon coincubation with an IgM-positive serum and HRP-labeled antigen but not with either component alone, revealing a potential for use of HsFcμR-Igl as a capture molecule in aggregation-based rapid tests. CONCLUSIONS Recombinant HsFcμR-Igl is a versatile capture molecule for IgM/antigen ICs of human and animal origin and can be applied for the development of both plate- and bead-based serological tests.

scholarly journals Non-Invasive Dengue Diagnostics—The Use of Saliva and Urine for Different Stages of the Illness

Diagnostics ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1345
Author(s):  
Mahathir Humaidi ◽  
Wei Ping Tien ◽  
Grace Yap ◽  
Choon Rong Chua ◽  
Lee Ching Ng
Keyword(s):  
Clinical Symptoms ◽  
Detection Algorithm ◽  
Acute Stage ◽  
Serum Samples ◽  
Non Invasive ◽  
Fever Onset ◽  
Dengue Transmission ◽  
Dengue Diagnostics ◽  
Potential Tool

Dengue diagnosis is largely dependent on clinical symptoms and routinely confirmed with laboratory detection of dengue virus in patient serum samples collected via phlebotomy. This presents a challenge to patients not amenable to venipuncture. Non-invasive methods of dengue diagnosis have the potential to enhance the current dengue detection algorithm. In this study, samples from dengue infected patients were collected between January 2012 until September 2012 and September 2013 until December 2013 in two different setups. Panel A samples (blood, urine, and saliva) were collected daily when the 39 patients were hospitalised and during their follow-up visits while Panel B samples (saliva) were collected from 23 patients during the acute stage of dengue. Using DENV PCR on Panel A, from day 2 to day 4 post fever onset, serum showed the best overall positivity followed by saliva and urine (100%/82.1%/67.9%). From day 5 until day 10 post fever onset, serum and urine had similar positivity (67.4%/61.2%), followed by saliva (51.3%). Beyond day 10 post fever onset, DENV was undetectable in sera, but urine and saliva showed 56.8% and 28.6% positivity, respectively. DENV in urine was detectable up until 32 days post fever. Panel B results showed overall sensitivity of 32.4%/36% (RNA/NS1) for DENV detection in saliva. Our results suggest that the urine-based detection method is useful especially for late dengue detection, where DENV is undetected in sera but still detectable in urine. This provides a potential tool for the physician to pick up new cases in an area where there is ongoing dengue transmission and subsequently prompt for intensified vector control activities.

scholarly journals Rubella Outbreak in Heballi Agasi Ward, Dharwad District, Karnataka, India, 2014–2015

2020 ◽  
Vol 41 (S1) ◽  
pp. s380-s380
Author(s):  
Sree Kalpana Mohankumar ◽  
Vishweshwarayya Hiremath ◽  
Rajashree Koppad
Keyword(s):  
Attack Rate ◽  
Clinical Symptoms ◽  
Cross Sectional Study ◽  
Routine Immunization ◽  
Serum Samples ◽  
Cross Sectional ◽  
Epidemic Curve ◽  
Surveillance Report ◽  
And Gender ◽  
Rubella Vaccination

Background: Countries that have good rubella surveillance, report ∼10,000–20,000 rubella cases annually. In India, not many cases of rubella are reported. The Hebballi Agasi ward of Dharwad district in Karnataka state, India, reported rubella cases on the last week of January 2015. Objective: We investigated the outbreak by time, place, person, and clinical symptoms. Methods: We performed a cross-sectional study. We defined a case as any resident of Heballi Agasi who had fever and rash, with or without lymphadenopathy, arthralgia, conjunctivitis, coryza, and cough, after December 15, 2014. We collected sociodemographic details and clinical symptoms of patients. We collected 5 serum samples and sent them to the National Measles Laboratory, Bangalore. We tested for measles and rubella antibodies. We drew an epidemic curve and a spot map. We computed mean age of cases, and we calculated attack rates by mean age and gender. We calculated proportions to describe clinical symptoms, and we interviewed stakeholders regarding rubella vaccination. We continued surveillance until March 2015. Results: The population of Heballi Agasi was 1,458. We identified 15 rubella cases (9 girls and 6 boys). The outbreak lasted between December 10, 2014, and February 21, 2015, with a peak on January 16, 2015. The overall attack rate was 1% (15 of 1,458). The mean age of the cases was 6 years (range, 1–23). The attack rate was high (7.7%) among those aged 1–6 years (11 of 143). The attack rate among those aged >6 years was 0.3% (4 of 1,315). In addition to fever and rash, 93% of cases (14 of 15) had coryza, 47% had cough (7 of 15), and 40% had conjunctivitis (6 of 15). Lymphadenopathy was present in only 1 case (1 of 15), and arthralgia was absent among all 15 cases. There was no death among the cases. All 5 sera were positive for rubella and negative for measles. Rubella vaccination was not given for any of the cases because no rubella vaccination is provided in the routine immunization program. Conclusions: There was a rubella outbreak in Heballi Agasi ward. Children aged 1–6 years were most affected. We recommend rubella vaccination in the routine immunization.Funding: NoneDisclosures: None

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