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Background: In Paraguay there has been a gradual and voluntary return to classes in a blended mode. Aim(s): To estimate the anti-SARS-CoV2 seroprevalence in schoolchildren and teachers. Method(s): Cross-sectional descriptive study, carried out between October 25 and November 5, 2021. Structured surveys were applied to schoolchildren and teachers from five schools, two in Asuncion and three in the Central Department. In addition, samples of fingerstick blood for antibody de-tection by rapid immunochromatographic test were obtained. Result(s): A total of 148 teachers and 966 schoolchildren were included, 12.4% of the schoolchildren had received the anti-COVID-19 vaccine, which represents 61.9% of the students qualified for vaccination. Among the teachers, 97.3% received the COVID-19 vaccine, 95.9% had the complete schedule, 34.5% of teachers and 3.9% of schoolchildren reported having had COVID-19. The seroprevalence with no vaccine status discrimination was 37.7% in schoolchildren and 91.9% in teachers. In unvaccinated schoolchildren, seroprevalence was 30.9% and in unvaccinated teachers 25.0%. Conclusion(s): The high anti-SARS-CoV-2 seroprevalence reflects an important viral circulation in the community. Almost the entire teaching staff had the complete vaccination schedule, and more than half of the qualified students had received at least a dose. The high seropositivity in vaccinated is highlighted. It is recommended to continue with the preventive non-pharmacological measures and vaccination.Copyright © 2022, Sociedad Chilena de Infectologia. All rights reserved.
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The COVID-19 outbreak has fashioned to severe threat to each and every individual in social and economic aspects in the country. This required improved wisdom to know how it is different and dominant, to diagnose and determine effective vaccines to avoid the transmission of these deadly causative agents. From this review, the probable property of these deadly transmissible viruses is related to that of SARS-CoV-2 as a fright zone of viruses. It also provides some sparks about effective and accurate diagnosis and treatment strategies. The effective management and control of panic zone of virus (PZV) and SARS-CoV-2 are more important to reduce the pandemic situation.Copyright © 2023 Inderscience Enterprises Ltd.
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This research was been adopted to study the relationship between Covid and some necessary biological factors in human body and how these factors affected, This studying included three stages (Sever - Moderate - Mild) it was studied 20 patient for every stage and monitor the biological factors during infection and after infection.Copyright © 2023, Codon Publications. All rights reserved.
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Introduction: Seroepidemiological studies can help to understand the dynamics of the infection by the type 2 severe acute respiratory syndrome virus (SARS-CoV-2) in the community. Objective(s): To determine the seroprevalence of COVID-19 Ciudad del Este district of Alto Parana department in Paraguay. Method(s): Descriptive cross-sectional study based on population. A rapid immunochromatographic test was used for the detection of anti-SARS-CoV-2 IgG/IgM antibodies. 1043 households were surveyed between October 27 and November 21, 2020. Result(s): Of the 1978 participants, women prevailed (60.3 %), 39.6 % had secondary education, 32.9 % were engaged in commerce. The most frequent risk factors were hypertension (13.7%), overweight or obesity (16.4%) and diabetes mellitus (6.1%). A total of 415 people (21%) had symptoms compatible with COVID-19, with headache being the most frequent (10.8%), followed by anosmia (10.4%) and sore throat (10.1%). 15.4% of respondents said they had been in contact with a COVID-19 case. 10.8% of participants had undergone a laboratory test for the diagnosis of COVID-19, of them, 72 people (33.6%) reported a positive result. Seroprevalence was high, with one in five reporting symptoms compatible with COVID-19. Conclusion(s): Despite the high anti-COVID-19 seroprevalence, most residents had mild infection, the proportion of hospitalized patients was low, and no fatal cases were reported.Copyright © 2023, Editorial Ciencias Medicas. All rights reserved.
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Background: According to data from the World Health Organization updated to September 30, 2022, SARS-CoV-2 is a viral disease, that infected six hundred million people and claimed six and a half million victims in all over the world. Some authors describe the alteration of blood parameters in pediatric age following COVID-19 such as: anomalies of the leukocyte formula, CK-MB and LDH enzymes, C reactive protein (PCR) and procalcitonin (PCT). Based on these studies we wanted to focus on two cardiac biomarkers: type B natriuretic peptide (BNP) and high sensitivity cardiac troponin (cTnT-hs). In order to suggest a strategy aimed at preventing the possible occurrence of cardiovascular complications in children we monitored them in patients with specific anti-SARS-CoV-2 immunoglobulins (IgG). Method(s): From November 2020 to December 2021, 53 children with positive IgG to SARS-CoV-2 by immunochromatographic method were tested for BNP and cTnT-hs. Samples collected in potassium EDTA tubes were tested for BNP by a fluorescence immunoassay. cTnT-hs was determined with an electrochemiluminescence sandwich test, which employs two specific monoclonal antibodies directed against cardiac troponin. The BNP cutoff is 100 pg/mL for patients aged 1 to 14 years, while that of cTnT-hs is 14 ng/L. All patients were monitored from hospitalization to discharge. Result(s): At least one of the two biomarkers resulted pathologic in 35 (66%) patients, while 18 (34%) were negative. The 35 pathologic cases were distributed as follows: 12 were simultaneously positive for cTnT-hs and BNP;13 were only positive for BNP, and 10 only positive for cTnT-hs. Sick children had a BNP mean value of 634 pg/mL at hospitalization, and of 94 pg/mL at discharge. For cTnT-hs, the initial mean value was 46 ng/l and the final was 17 ng/L. Twelve children with both altered values were monitored for a longer time, as they returned negative more slowly. Repeated dosages of the two analytes from hospitalization to discharge, showed a constant decrease over the time. After about ten days from the first dosage, both parameters returned to values near to the relative cutoffs. Conclusion(s): Measuring BNP and cTnt-hs can be useful for screening and monitoring pediatric patients positive for anti-SARSCoV-2 IgG.Copyright © 2022 EDIZIONI MINERVA MEDICA.
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Background. Several studies and cohorts with adult populations with rheumatic diseases (RD) were performed since pandemic outbreak. RD patients were more susceptible to infections and may develop severe forms of COVID-19, since they present immunosuppressive mechanisms inherent to the disease itself and to its treatment. Healthy children and adolescents seem to be less infected and present milder diseases. However, juvenile dermatomyositis patiets and immunosuppressed children have not been extensively studied. The objectives of the study are to evaluate asymptomatic SARS-CoV-2 infection in pediatric RD patients, to identify the risk factors related to contagion and to describe demographics and the profile of COVID-19 in juvenile dermatomyositis (JDM) patients followed. Methods. A cross-sectional study was conducted in March 2021, including 77 pediatric RD patients followed at a Brazilian tertiary hospital and 45 healthy controls. Data was obtained through a questionnaire applied to outpatients during the month of March 2021, before the vaccine, and contained demographic data, symptoms compatible with COVID-19 over the past year, and contact with people with confirmed COVID-19. Patients' medical records were reviewed to access data regarding disease and current medications. A qualitative immunochromatographic SARS-CoV-2 test was performed in all participants. All patients who were using rituximab or intravenous human immunoglobulin, or had symptoms of COVID-19, were excluded. Results. Patients' group included 11 (14.3%) JDM patients, 31 (40.2%) JIA, 25 (32.4%) JSLE, six patients with vasculitis, two with SS, one MCTD and one with autoinflammatory syndrome. Patients and controls were similar in terms of female gender (70.1% vs. 57.8%, p=0.173), median age (14 vs. 13 years, p=0.269) and SARS-CoV-2 serology positivity (22% vs. 15.5%, p=0.481). 80.5% of rheumatic patients were in use of immunosuppressive drugs, 27.3% of them using corticosteroids, 33.3% in high doses, and 7.8% on immunobiologicals. No statistical differences were found between positive (n=17) and negative serology (n=60) patients regarding demographic/socioeconomic data, contact with people with confirmed COVID-19, use and number of immunosuppressive drugs, use and dose of corticosteroids, use of hydroxychloroquine and immunobiological drugs (p>0.05). Regarding the profile of JDM patients, 6/11 (54%) were female, the median age was 13 years (range 9-17) and 3/11 (27%) presented COVID-19 serology positivity. 2/11 were in immunosuppressive treatment, however none of them were in use of glucocorticoids and biologic agents. Conclusions. Pediatric JDM and other rheumatic diseases patients were infected at the same rate as healthy ones. Neither the underlying pathology nor its treatment seemed to interfere with the contagion risk.
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The aim. To investigate the clinical peculiarities of adult patients with diarrheal syndrome, associated with coronavirus infection COVID-19. The materials and methods. There has been carried out the analysis of 56 patients aged 26-81 years, hospitalized with acute enteric infection at the Municipal Infectious Diseases Hospital 8 (not reprofiled as hospital for the treatment of coronavirus infection COVID-19 patients) in the course of August 2020 - February 2021 and the patients with cause-effect relationship with COVID-19. There have been used the routine diagnostic methods, the analysis of feces for causative agents of diarrhea was tested by the methods of bacteriological and immunoenzymatic analysis, the analysis of feces for toxins A and B Clostridium difficile was tested method of immunochromatographic assay;the blood serum was tested by method of immunoenzymatic analysis and the analysis of nasopharyngeal swabs was tested by immunochromatographic assay and PCR test for markers SARS-COV-2. The statistical material treatment has been done using Statistical Package of IBM SPSS Statistics-22. The results. There have been registered 51,8% of cases - diarrhea as one of the clinical manifestations of COVID-19 in adult patients (the first group of patients), in 48,2% of cases - diarrhea as a result of recently treated COVID-19 and a massive course of antibiotics (the second group of patients). In the second group 12 patients have been diagnosed with clostridial infection, 15 patients - with antibiotic-associated diarrhea. There has been registered the main severity of clinical manifestations in patients with clostridial infection. The disease being characterized by severity of colitis syndrome, the blood sedimentation rate increasing, hyperleukocytosis in haemogram, hypoproteinemia and hypoalbuminemia. The aggravating factors are combined comorbidity and patients aged over 55 years. The conclusion. There should be used the differential approach for diarrheal syndrome in patients with coronavirus infection. Taking into account the massive course antibiotics' side effects, the analysis of feces for pathogenic flora must be included into the medical examinations such as Clostridium difficile and the course of probiotic and anticlostridial medicines should be done.Copyright © 2022 Authors. All rights reserved.
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The aim. To investigate the clinical peculiarities of adult patients with diarrheal syndrome, associated with coronavirus infection COVID-19. The materials and methods. There has been carried out the analysis of 56 patients aged 26-81 years, hospitalized with acute enteric infection at the Municipal Infectious Diseases Hospital 8 (not reprofiled as hospital for the treatment of coronavirus infection COVID-19 patients) in the course of August 2020 - February 2021 and the patients with cause-effect relationship with COVID-19. There have been used the routine diagnostic methods, the analysis of feces for causative agents of diarrhea was tested by the methods of bacteriological and immunoenzymatic analysis, the analysis of feces for toxins A and B Clostridium difficile was tested method of immunochromatographic assay;the blood serum was tested by method of immunoenzymatic analysis and the analysis of nasopharyngeal swabs was tested by immunochromatographic assay and PCR test for markers SARS-COV-2. The statistical material treatment has been done using Statistical Package of IBM SPSS Statistics-22. The results. There have been registered 51,8% of cases - diarrhea as one of the clinical manifestations of COVID-19 in adult patients (the first group of patients), in 48,2% of cases - diarrhea as a result of recently treated COVID-19 and a massive course of antibiotics (the second group of patients). In the second group 12 patients have been diagnosed with clostridial infection, 15 patients - with antibiotic-associated diarrhea. There has been registered the main severity of clinical manifestations in patients with clostridial infection. The disease being characterized by severity of colitis syndrome, the blood sedimentation rate increasing, hyperleukocytosis in haemogram, hypoproteinemia and hypoalbuminemia. The aggravating factors are combined comorbidity and patients aged over 55 years. The conclusion. There should be used the differential approach for diarrheal syndrome in patients with coronavirus infection. Taking into account the massive course antibiotics' side effects, the analysis of feces for pathogenic flora must be included into the medical examinations such as Clostridium difficile and the course of probiotic and anticlostridial medicines should be done.Copyright © 2022 Authors. All rights reserved.
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Rapid diagnosis of coronavirus disease 2019 (COVID-19)-infected patients is urgent in making decisions on public health measures. There are different types of diagnostic tests, such as quantitative PCR assay, antibody, and antigen-based and CRISPR-based tests, which detect genetic materials, viral proteins, or human antibodies in clinical samples. However, the proper test should be highly sensitive, quick, and affordable to address this life-threatening situation. This review article highlights the advantages and disadvantages of each test and compares its different features, such as sensitivity, specificity, and limit of detection to reach a reliable conclusion. Moreover, the FDA- authorized kits and studies' approaches toward these have been compared to provide a better perspective to the researchers.Copyright © 2022 Lippincott Williams and Wilkins. All rights reserved.
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From modular vaccine production to protein assembly on nanoparticles, the SpyCatcher/SpyTag system provides a convenient plug-and-display procedure. Here, we established a general-purpose immunoaffinity chromatography (IAC) method for SpyTagged proteins (Spy&IAC). SpyTags are displayed on the surface of nanoparticles to induce high-affinity monoclonal antibodies, allowing the specific capture of the target protein. Taking the key core antigenic regions of two coronaviruses that are currently more threatened in the field of human and animal diseases, the nucleocapsid (N) protein of SARS-CoV-2 and the COE protein of porcine epidemic diarrhea virus (PEDV) as model proteins, a purification model with SpyTag at the N-terminal or C-terminal expressed in E. coli or mammalian cells was constructed. After the efficient elution of Spy&IAC, the final yield of several proteins is about 3.5-15 mg/L culture, and the protein purity is above 90 %. Purification also preserves the assembly function and immunogenicity of the protein to support subsequent modular assembly and immunization programs. This strategy provides a general tool for the efficient purification of SpyTagged proteins from different expression sources and different tag positions, enabling the production of modular vaccines at lower cost and in a shorter time, which will prepare the public health field for potential pandemic threats.
Subject(s)
COVID-19 , Escherichia coli Proteins , Nanoparticles , Periplasmic Proteins , Vaccines , Animals , Swine , Humans , Escherichia coli , SARS-CoV-2 , COVID-19/prevention & control , Proteins , Nanoparticles/chemistry , MammalsABSTRACT
Introduction: Coronavirus disease 2019 (COVID-19) pandemic continues to be a global public health problem. The present study aimed to investigate SARS-CoV-2 antibodies and evaluate the results using an immunochromatographic method and an ELISA method, in patients with suspected COVID-19, who were tested by reverse transcription polymerase chain reaction (RT-PCR) technique to detect SARS-CoV-2 RNA. Materials and Methods: The study was conducted at the SARS-CoV-2 authorized diagnostic laboratory of our hospital at the beginning of the COVID-19 pandemic, between 27 March and 14 May 2020. The nasopharynx and oropharynx swab samples of the patients included in the study were tested by the SARS-CoV-2 RT-PCR (Bioeksen, Ístanbul, Turkey), where the serum samples were tested by an immunochromatographic test (Beijing Hotgen Biotech Co., Ltd, China) and Anti-SARS-CoV-2 ELISA IgG (Euroimmun, Luebeck, Germany) test. The dates the patients’ symptoms started and the samples were collected for RT-PCR and serological testing were recorded. The patients were divided into two groups based on the data retrieved from the files containing the clinical information and microbiological results of the patients: individuals, who were diagnosed with COVID-19, and individuals, for whom the COVID-19 diagnosis was excluded. Results: Of the 115 patients included in the study, 92 (80%) individuals presented to the clinic with COVID-19 similar symptoms, while 23 (20%) individuals had contact with patients diagnosed with COVID-19. Sixty-one (66.3%) of 92 patients with symptoms were diagnosed with COVID-19, where 6 (26%) individuals out of 23 without symptoms were diagnosed with COVID-19. Fifty-one (76.1%) individuals out of 67 patients diagnosed with COVID-19 had positive RT-PCR results. Sixteen individuals with COVID-19, who were tested negative for RT-PCR, had positive Euroimmun Anti-SARS-CoV-2 ELISA IgG results. Of the 67 patients diagnosed with COVID-19, 61 (91%) were symptomatic and the extended time periods between the onset of the symptoms and the date of sampling for the RT-PCR test was associated with lower rates of being tested positive for the RT-PCR test (p= 0.01). Conclusion: The present study investigated the performance of the COVID-19 tests and showed that antibody tests intended for patients with suspected COVID-19, even in cases where the RT-PCR test is negative, would contribute to the diagnosis. The study contributes in the relevant literature as to which tests would be more useful in certain conditions, considering the fact that there is no test available that can provide 100% accurate results for the diagnosis of COVID-19.
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Objectives: The COVID-19 pandemic has brought tremendous impact on healthcare, including screening for hepatitis B in pregnant women. Of 19,234 pregnant women, there were 2.38% identified as hepatitis B in 2017-2019. This study was aimed to investigate its current prevalence during pandemic. Materials and Methods: A cross-sectional study was conducted among pregnant women between April 2020 and September 2021 in 3 public health centers in Cirebon Regency, Indonesia. History of chronic liver disease was excluded in this study. Data were collected from annual report of Department of Health, Cirebon Regency, Indonesia, including demographic characteristics, obstetric history, the presence of jaundice. The status of hepatitis B was detected by immunochromatographic, rapid assay HBsAg test kit. Results: Of 2210 subjects, there were 21 found positive (0.95%). Median age of subjects were 28 years old (15-48). Among subjects, as many as 37.42% were primigravida and 47.19% were in first trimester. None of subjects had symptoms. The highest hepatitis B prevalence was identified in mother aged<35 year and multiple parities. Conclusion: Prevalence of hepatitis B among pregnant women in Cirebon Regency during pandemic was 0.95% and markedly reduced compared with previous prevalence.
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The purpose of the present study was to evaluate the efficacy of Enzyme-Linked Immunosorbent Assay (ELISA), immunochromatographic (ICG), and reverse transcription-polymerase chain reaction (RT-PCR) methods for the detection of rotavirus (RV) and bovine coronavirus (BCV). Faeces samples were collected from 90 diarrhoeic calves (male and female) up to one month of age and the immune response against RV and BCV infection was assessed by using AgELISA, ICG, and RT-PCR. To determine the performance and accuracy of each diagnostic method in comparison to the diagnostic gold standard (RT-PCR) method, different statistical tests including receiver operating characteristic curve (ROC) and concordance correlation were used. Results revealed the prevalence of RV and BCV and RV+BCV according to RT-PCR were equal to 8.89 (95% CI: 6.64-10.07), 14.44 (95% CI: 11.23-6.90), and 2.22 (95% CI: 0.89-3.72), respectively. The best agreement and the highest sensitivity and specificity were obtained between the RT-PCR and AgELISA (100% and 94.3%), and also the ICG test (95% and 94.3%) was less accurate method in comparison to ELISA method for identifying RV and BCV, but a good correlation and concordance between ICG diagnostic techniques and RT-PCR were observed. To put it in a nutshell, our results demonstrate that the AgELISA is the most accurate technique in comparison to RT-PCR, however the ICG assay can help improve the speed of diagnosis RV and BCV infections in dairy field. New scientific strategies for promoting accuracy and transparency of ICG-based technique in early diagnosis of the cause of calf diarrhoea should be used. Altogether, we suggest that positive ICG samples should be tested by AgELISA or RT-PCR techniques to avoid false results in farm animals.
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Background: Diarrhea induced by infectious factors may lead to significant health problems in dogs. Canine parvovirus (CPV), canine coronavirus (CCV), canine distemper virus (CDV), Giardia spp., Escherichia coli (E. coli), and Salmonella spp. are the important infectious agents that may induce diarrhea in dogs. The present study aimed to investigate the effect of CPV, CCV, CDV, Giardia spp., E. coli, and Salmonella spp. infections on the change in serum calprotectin (Calp) concentration. Materials, Methods & Results: A total of 30 dogs were enrolled in the study. The study dogs were divided into 3 groups. Healthy animals as confirmed by clinical examination and animals negative for the specified pathogens were placed in Group 1. Animals infected by one or more agents, including CPV, CCV, CDV, and Giardia spp., but negative for E. coli or Salmonella spp. were placed in Group 2. Finally, animals positive for E. coli or Salmonella spp. and infected or not infected by one or more agents, including CPV, CCV, CDV, and Giardia spp., were placed in Group 3. Stool samples and rectal and conjunctival swab samples were collected to investigate the etiologic agents that induced diarrhea. Blood samples were collected through vena cephalica antebrachii for hematological and biochemical examinations. The samples were obtained via routine clinical examinations at the Prof. Dr. Servet Sekin outpatient clinic at Dicle University Veterinary Faculty. CPV, CCV, CDV, and Giardia spp. diagnoses were made based on immunochromatographic test kits. The bacteriological analysis of stool samples was used to diagnose E. coli and Salmonella spp. infection. Serum Calp concentrations were measured by Enzyme-Linked Immunosorbent Assay (ELISA). The analysis of swab and stool samples by immunochromatographic rapid diagnosis kits and microbiological methods showed that 5 animals were infected with CPV, 10 with CCV, 6 with CDV, 3 with Giardia spp., 12 with E. coli, and 2 with none of the specified agents. Total leukocyte count (WBC), lymphocyte (Lym - %), and granulocyte (Gra - %) values were higher in the diarrheal dogs when compared with the control group. In the biochemical examination of serum samples, total bilirubin (TBIL) and phosphorus (P) levels were higher and sodium (Na) levels were lower in Group 3 when compared to the control group (P = 0.025, 0.024, and 0.018, respectively). Total protein (TP) and albumin (Alb) values were lower in Group 2 compared to Groups 1 and 3 [P = 0.001 and 0.019 for TP, P = 0.000 and 0.01 for Alb, respectively]. There was a statistically significant difference in creatine kinase (CK) levels between Group 1 and Group 2 (P = 0.013). Serum Calp level was higher in the E. coli infected group (Group 3) compared to the other groups, no significant differences were noted between the groups (P > 0.05). Discussion: In conclusion, to the best of authors knowledge, this study is the first to evaluate serum Calp levels in dogs with diarrhea induced by viral, bacterial, and protozoan infections. The Calp level was higher in the sick dogs that were infected by at least one agent, including CPV, CCV, CDV, and Giardia spp., and were at the same time E. coli positive when compared with the control group and the group without E. coli infections. It was concluded that new studies could be useful to reveal the diagnostic importance of serum Calp concentration in dogs with diarrhea and that these results may contribute to future studies in this area.
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Background. The spread of carbapenem resistant Pseudomonas aeruginosa and carbapenemase-producing Enterobacterales (CPE) has had a great impact on morbidity and mortality. COVID-19 pandemic has favoured the selection of these microorganisms because of the excessive and prolonged use of broad-spectrum antibiotics and the outbreaks related to patient transfer between hospitals and inadequate use of personal protective equipment. Therefore, detection is considered essential for their control. Our aim was to compare conventional phenotypic synergy tests and two lateral flow immunoassays for detecting carbapenemases in Enterobacterales and P. aeruginosa. Methods. We analysed 100 carbapenem-resistant Gram-negative bacilli isolates, 80 Enterobacterales and 20 Pseudomonas aeruginosa, (86 isolates producing KPC, NDM, OXA-48, IMP and VIM carbapenemases and 14 non-carbapenemase-producing isolates). We performed a modified Hodge test, boronic acid and ethylenediaminetetraacetic acid (EDTA) synergy tests, and two lateral flow immunoassays: RESIST-4 O.K.N.V (Coris BioconceptR) and NG Test Carba 5R (NG BiotechR). Results. In total, 76 KPC, 7 VIM, 1 NDM, 1 OXA-48 and 1 isolate coproducing KPC + NDM enzymes were included. The concordance of different methods estimated by Kappa index was 0.432 (Standard error: 0.117), thus showing a high variability with the synergy tests with boronic acid and EDTA and reporting 16 false negatives that were detected by the two immunochromatographic methods. Co-production was only detected using immunoassays. Conclusion. Conventional phenotypic synergy tests with boronic acid and EDTA used for detecting carbapenemases are suboptimal and their routine use should be reconsidered. They depend on the degree of enzyme expression and the distance between disks. Lateral flow immunoassay tests are a rapid and cost-effective tool to detect and differentiate carbapenemases, improving clinical outcomes through targeted therapy and promoting infection prevention measures.
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Introduction: Case report Objectives: During the past year, COVID-19 infection was recognized as a potential trigger for new onset diabetes in children. A rare but severe complication of COVID-19 infection in children and adolescents is multisystem inflammatory sindrome in children (MIS-C). We describe a case of newly diagnosed diabetes mellitus (DM) in a tenyear old patient during the course of MIS-C. Methods: Case report Results: A ten-year-old previously healthy male presented with vomiting and painful and enlarged lymph nodes. He was febrile to 39.4°C and tachycardic to 124 beats/minute. Initial laboratory evaluation was notable for acute infection, but the child also had hyperglycemia, ketonuria, glycosuria. Empiric antibiotic therapy was started, but he was persistently febrile, had lymphadenopathy with redness of the surrounding skin and developed conjunctival injection and a discrete livid erythema on the trunk. His follow up labs showed leukopenia with lymphocytopenia and neutrophilia, anemia and thrombocytopenia and upsurge of inflammation markers. Other possible causes of his condition were excluded and he tested positive for anti-SARS-CoV-2 IgM and IgG via immunochromatographic assay. Criteria for MIS-C was met, and intravenous immunoglobulin treatment was started which yielded immediate recovery. During the acute course of MIS-C his blood glucose levels were up to 15.5 mmoL/L, with no disturbances in acid-base status. Since high glucose levels and glucosuria persisted beyond resolution of the MIS-C, and HbA1c was elevated (7.8%), the patient was started on intensified therapy with insulin analogues. Islet-cells autoantibodies were only marginally elevated (GAD-65 1.9 and IA-2A 1.8 kIU/L) and C-peptide was normal. Conclusions: In pediatric population inflammatory syndromes like MIS-C can raise the risk for diabetes development or presentation. Therefore it is important to monitor glycemia during the course of MIS-C and also during post-inflammatory follow-up.
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Major histocompatibility complex class I (MHC I) plays a crucial role in the development of adaptive immune response in vertebrates. MHC molecules are cell surface protein complexes loaded with short peptides and recognized by the T-cell receptors (TCR). Peptides associated with MHC are named immunopeptidome. The MHC I immunopeptidome is produced by the proteasome degradation of intracellular proteins. The knowledge of the immunopeptidome repertoire facilitates the creation of personalized antitumor or antiviral vaccines. A huge number of publications on the immunopeptidome diversity of different human and mouse biological samples-plasma, peripheral blood mononuclear cells (PBMCs), and solid tissues, including tumors-appeared in the scientific journals in the last decade. Significant immunopeptidome identification efficiency was achieved by advances in technology: the immunoprecipitation of MHC and mass spectrometry-based approaches. Researchers optimized common strategies to isolate MHC-associated peptides for individual tasks. They published many protocols with differences in the amount and type of biological sample, amount of antibodies, type and amount of insoluble support, methods of post-fractionation and purification, and approaches to LC-MS/MS identification of immunopeptidome. These parameters have a large impact on the final repertoire of isolated immunopeptidome. In this review, we summarize and compare immunopeptidome isolation techniques with an emphasis on the results obtained.