Infected Group Research Articles

Association of serum pertussis antibodies with acute asthma attacks in children.

Objective: The aim of this study was to examine the serum antibody levels against pertussis toxin (PT) in children experiencing an acute asthma attack and to explore the potential association between these levels and asthma. Methods: A prospective investigation was conducted, which involved 107 children with acute asthma attacks and 77 children diagnosed with bronchitis. The serum immunoglobulin G (IgG) antibody levels specific to PT were measured by using an in-house enzyme-linked immunosorbent assay. Based on the serum PT-IgG antibody levels, the children with asthma were categorized into three groups: non-pertussis infected, suspected pertussis infected, and recent pertussis infected. The clinical manifestations and pulmonary function of pediatric patients diagnosed with asthma were assessed and compared across various groups. Results: Of the total asthma group, 25 patients tested positive for PT-IgG, whereas only six patients in the bronchitis group were PT-IgG positive. The prevalence of recent pertussis infection was observed to be higher in the asthma group compared with the bronchitis group. Within the asthma group, those with recent pertussis infection exhibited a higher likelihood of experiencing wheezing and impaired lung function in comparison with the non-pertussis infection group. Conclusion: Pertussis infection is relatively common in children with asthma and correlates with the severity of asthma.

Analysis of Clinical Features and Treatment of Patients Presenting Dyspepsia Related to COVID-19: Retrospective Chart Review

Objectives: The main purpose of this study is to investigate the clinical characteristics of patients complaining of indigestion after COVID-19 infection (CI) or COVID-19 vaccination (CV) and to confirm the effectiveness and safety of Korean medical treatment.Methods: We retrospectively collected and investigated the medical records of 39 patients admitted to the Kyung Hee University Korean Medicine Hospital with a chief complaint of dyspepsia from January 1, 2020 to February 29, 2024 who reported the onset or significant exacerbation of dyspepsia after CV or CI. Patients were divided into vaccination and infection groups, and their demographic characteristics, Ryodoraku results, presenting symptoms, traditional Korean medicine treatments, and treatment outcomes were analyzed.Results: When comparing the groups with dyspepsia after CV and after CI, it was observed that the CI group had significantly lower average body weight, and the measurements of LH6, LF1, and LF6 in the Ryodoraku test were significantly lower. Additionally, compared to the CV group, the CI group showed significantly more abdominal distension, nausea, and abdominal pain. Significant relief of upper gastrointestinal symptoms was observed in both the CV and CI groups after treatment. No adverse reactions were observed during the course of treatment.Conclusion: The CI group tended to complain more severely of various dyspeptic symptoms and had a tendency to lower body weight than the CV group, as was also reflected in the results of the Ryodoraku test. Korean medical treatment can be effective and safe in treating these patients.

INTRA-FAMILIAL TRANSMISSION OF HEPATITIS B VIRUS IN ADEN -YEMEN

Hepatitis B virus (HBV) is a major challenge to public health worldwide. Close contacts between susceptible family members and the index cases who live with HBV infection increase the rate intra-familial transmission of HBV. So our study aimed to determine the prevalence of HBV infection among family members of confirmed positive HBV patients and to identify the intra and extra-familial risk factors contributing for transmission of HBV infection among those members. Analytical cross-sectional study was conducted on 100 family members who belong to the 14 index cases were included in this study, the average was 7.1(100/14) members. HBsAg in both index cases and family members was determined by using ELISA kit. Analysis of the data was performed by using SPSS (Version 21), the quantitative data were expressed as mean values, (SD) because the data was normal distributed. The qualitative data was expressed as percentages and χ2 test was used for comparison of two variables to determine the p- value where <0.05 was considered statistically significant. They were 50 (50 %) males with a total mean± SD of age were 25±15.9 years. The overall prevalence of HBV infection was 19 (19. 0%). The highest rates were 41.2% in age group 30—39 years, 22% males, 26.7% married, 19.4% among those family members who were in close contact with female index cases and 40% father relatives. A statistically significance association between HBV infection and age group 30—39 years (p=0.011). There were no positive cases was found among those members who were vaccinated against HBV and no significant association between HBV infection and either intra or extra risk factors among family members. It can be concluded that Intra-familial transmission of HBV infection was high among family member in Yemen. The highest prevalence was found in age group 30-39 years, males, married and among those family members who were in close contact with female index cases. The most frequent relatives with HBV infection were fathers, while a negative HBV cases was observed among mothers and wives and vaccinated members. There were no significant association between HBV infection and either intra or extra risk factors among family members.

Age and Peripheral Blood Values Relationship Evaluation of Trichomonas Vaginalis, Candida, and Gardnerella Vaginalis Frequency in Cervicovaginal Pap Smear Screening in Aksaray Province

This study aimed to explore the correlation between causative agents of vaginitis detected in Pap smear screenings and various hematological indices, alongside the severity of infections observed in Pap smears. We analyzed 348 Pap smear results, which were categorized into normal and abnormal findings and further subdivided into groups based on the presence of Vulvovaginal Candidiasis (VVC), Bacterial Vaginosis (BV), and Trichomoniasis (TV). The degree of inflammation (mild, moderate, severe) was assessed in relation to hematological indices (Platelet Index Value (PIV), Systemic Immune-Inflammation Index (SII), Systemic Inflammatory Response Index (SIRI), Neutrophil to Lymphocyte Ratio (NLR), Platelet to Lymphocyte Ratio (PLR), and Lymphocyte to Monocyte Ratio (LMR)), guided by the 2014 Bethesda System for evaluation. Out of 1654 patients screened, 348 met the inclusion criteria (253 aged below 45 years; 95 aged 45 years and above). In the under-45 age group, 83.3% had normal findings, with prevalence rates for VVC, BV, and TV at 73.4%, 60.2%, and 80.0%, respectively. In the over-45 group, these figures were 16.7% (normal), 26.6% (VVC), 39.8% (BV), and 20% (TV). The prevalence of moderate vaginitis in Pap smears was 45.3% for VVC, 96.1% for mild BV, and 53.3% for moderate TV. In cases of Atypical Squamous Cells of Undetermined Significance (ASCUS), BV was predominant, while VVC and TV were absent in Low-Grade Squamous Intraepithelial Lesion (LSIL) and High-Grade Squamous Intraepithelial Lesion (HSIL) cases. BV was present in 7.8% of normal smears. Significant associations were observed between hematological parameters and the severity of inflammation in the normal smear category (p<0.001). In squamous cell anomaly cases, especially ASCUS, differences in SII, NLR, PLR, SIRI, and PIV were noted between severe and mild infections, as well as between moderate and severe infection groups. This research underscores the linkage between the severity of infection and cellular abnormalities identified in cervical cytology, causative agents of vaginitis, and hematological indices with inflammatory parameters, potentially informing clinical management strategies

New insights into swine dysentery: faecal shedding, macro and microscopic lesions and biomarkers in early and acute stages of Brachyspira hyodysenteriae infection

BackgroundSwine dysentery (SD) is a severe mucohaemorrhagic colitis in pigs caused classically by Brachyspira hyodysenteriae. Although several aspects of B. hyodysenteriae infection dynamic are already described, further research in the early stage of this infection is required. In this study, 7-week-old pigs were orally challenged with B. hyodysenteriae to obtain information about faecal shedding, macro and microscopic intestinal lesions and serum acute phase proteins in pigs at the onset of B. hyodysenteriae shedding (early infection group, n = 8), in pigs with mucohaemorrhagic diarrhoea (acute infection group, n = 8) and in non-infected controls (n = 16).ResultsFirst B. hyodysenteriae detection by q-PCR and first loose stools with blood and mucus occurred both at 8 days post-inoculation. The lapse between a positive q-PCR and observation of mucohaemorrhagic diarrhoea ranged from 0 to 3 days, except in a single pig in which this period lasted 5 days. Macroscopic lesions were observed in the large intestine from both infected groups although more frequent and severe in acute infection group. Microscopic observation of the apex mucosa revealed that in early infection only higher ulceration values were observed compared to healthy controls. In contrast, the acute infection group exhibited higher ulceration, neutrophils infiltration and increased mucosal thickness compared to the other two groups. Among the serum biomarkers tested, only haptoglobin, C-reactive protein, and creatine kinase showed a significant increase in pigs in the acute infection period compared to controls, whereas haptoglobin was the only factor with a significant increase at the early infection compared to non-infected animals.ConclusionsThis study provides new insights about SD and remarks the complex and limited options to perform an early detection of infected animals beyond PCR diagnosis.

Pregnancy outcomes after first-trimester exposure to fluoroquinolones: Findings based on an integrated database from two Japanese institutions.

Given the paucity of safety data on fluoroquinolone antibiotics in pregnancy, a prospective observational cohort study was conducted in pregnant women who sought help and advice on drug use at two teratology information institutes in Japan. The primary endpoint of the study was the incidence of major congenital anomalies. The study population included pregnant women exposed to (i) fluoroquinolones (fluoroquinolone group), (ii) β-lactams (infectious control group), or (iii) other agents considered to be nonteratogenic in humans (nonteratogenic control group) during the first trimester. The frequency of major congenital anomalies was compared across groups using a logistic regression model that adjusted for maternal age, smoking status, drinking status, facility consulted, and time of consultation. The fluoroquinolone group consisted of 411 women who had 383 children born alive. The infectious control and nonteratogenic control groups consisted of 1416 and 1482 women who had 1322 and 1401 children born alive, respectively. The incidence of major congenital anomalies was 1.5%, 2.0%, and 1.6% in the fluoroquinolone group, infectious control, and nonteratogenic control groups, respectively. Logistic regression showed that fluoroquinolone exposure is not a significant risk factor for major congenital anomalies. In conclusion, first-trimester exposure to fluoroquinolone antibiotics was not associated with increased maternal or fetal risks.

HEMATOLOGICAL AND MOLECULAR STUDY OF TRYPANOSOMA EVANSI IN EXPERIMENTALLY INFECTION IN RABBITS

The lack of a sensitive diagnostic test for trypanosomasis in animals may hamper epidemiological data and control program implementation. This study aimed to detection of Trypanosoma evansi in rabbits that experimentally infected by this parasite which identified from camels of iraq by polymerase chain reaction. A study was conducted on 24 males rabbit divided into two groups (12 rabbits for each group). The first group was injected intra peritoneal (i/p) with 0.5 ml containing 1x105 trypanosome. The second group injected with distilled water and considered as control. At 7 and 10 days post infection, blood sample were collected from these rabbits. White blood cells count was conducted after 14 and 28 days post infection. The results showed that the 18S RNA and RoTat 1.2 genes related to T. evansi were identified .Furthermore ,there was significant elevation of Neutrophils ,Monocytes ,Lymphocytes ,Eosinophil and Basophils in infected rabbits compared with the control group. From this study we can conclude that PCR is a sensitive and effective technique for diagnosis of T.evansi through using 18S RNA and RoTat 1.2 genes. In addition ,WBC count was significantly elevated in an infected rabbits compared to the control. Whereas ,Lymphocyte was significantly higher in control group compared with infected group.

The effect of late presentation on HIV related mortality among adolescents in public hospitals of north showa zone Oromiya, Ethiopia; 2022: a retrospective cohort study

BackgroundLate human immunodeficiency virus (HIV) diagnosis is the most prominent cause of HIV/AIDS-related mortality and also increases the risk of transmission and spread of the disease in society. Adolescents are the most vulnerable population’s age group for HIV infection in several settings, but expanding access to early HIV testing remains a challenge. Consequently, a significant proportion of adolescents are still dying of HIV-related causes, and the current study aimed at assessing the effect of late presentation on HIV-related mortality among adolescents living with HIV.MethodsAn institutional-based retrospective cohort study was conducted from August 21–November 21, 2022, at selected public hospitals in the North Showa Zone of Oromiya, Ethiopia. All adolescents living with HIV who had received no ART and presented for ART follow-up at public hospitals from September 1, 2012, to August 31, 2021, were included in the study. Data entry was done by Epi-data version 3.1.1 software and exported to Stata version 16 for further analysis. Both bi-variable and multivariable analyses were performed using the Cox proportional hazard model to compare the HIV-related mortality of early and late-presented adolescents using an adjusted hazard ratio at a 95% confidence interval (CI).ResultsA total of 341 medical records of adolescents were included in the study, contributing an overall incidence rate of 3.15 (95% CI: 2.21–4.26) deaths per 100 person-years of observation throughout the total follow-up period of 1173.98 person-years. Adolescents with late presentation for HIV care had three times the higher hazard of mortality (adjusted hazard ratio (aHR) = 3.00; 95% CI: 1.22–7.37) as compared to those with early presentation for HIV/AIDS care. Adolescents within the age range of 15–19 years old (aHR = 3.56; 95% CI: 1.44–8.77), rural residence (aHR = 2.81; 95% CI: 1.39–5.68), poor adherence to ART (aHR = 3.17; 95% CI: 1.49–6.76), and being anemic (aHR = 3.09; 95% CI: 1.52–6.29) were other independent predictors of HIV-related mortality.ConclusionThe study found a substantial link between HIV late presentation to care and mortality among adolescents. Residence, age, antiretroviral therapy (ART) medication adherence, and anemia status were also found to be other independent predictors of HIV-related mortality. To achieve the ultimate aim of lowering mortality among adolescents living with HIV, rigorous emphasis must be placed on early presentation for HIV/AIDS care. In addition, counseling on adherence and prompt diagnosis and treatment of anemia are highly recommended to reduce mortality.

Beyond parasitism: Exploring the microbial profile of Haemonchus contortus and its predilection site (abomasum) in Kashmir Merino sheep

Gastrointestinal helminth infection, particularly by Haemonchus contortus, poses significant challenges to sheep farming worldwide. While anthelmintic drugs have been traditional control measures, the emergence of resistance calls for alternative strategies. Understanding the interaction between parasites, host, and their microbiome is crucial for management of helminth infection. This study intricately explores the interactions between microbial communities in Kashmir Merino sheep infected with H. contortus, to understand the complex interplay between host, parasite, and their microbiome. Sheep abomasal contents and H. contortus were collected from infected and control groups, processed for DNA extraction, and subjected to metagenomic sequencing of the 16 S rRNA gene. Downstream analysis unveils distinct microbial patterns, where Proteobacteria were dominant in H. contortus, while Bacteroidota and Firmicutes prevailed in the sheep abomasum. The revelation of unique genera and shifts in diversity indices underscored helminth-induced disruptions in the host. Beta diversity analysis further showed significant variations in bacterial profiles, providing insights into the intricate host, parasite, and microbiome dynamics. Additionally, this study elucidated the presence of pathogenic bacteria within H. contortus, accentuating their potential role in exacerbating sheep health issues. This finding underscores the complexity of the host-parasite-microbiome interaction showing helminth-induced microbiome alterations of the host.

Predictive Value of Multiple Scoring Systems in the Prognosis of Septic Patients with Different Infection Sites: Analysis of the Medical Information Mart for the Intensive Care IV Database.

The heterogeneity nature of sepsis is significantly impacted by the site of infection. This study aims to explore the predictive value of multiple scoring systems in assessing the prognosis of septic patients across different infection sites. Data for this retrospective cohort study were extracted from the Medical Information Mart for Intensive Care IV database (MIMIC-IV) (v2.2). Adult patients meeting the criteria for sepsis 3.0 and admitted to the intensive care unit (ICU) were enrolled. Infection sites included were pneumonia, urinary tract infection (UTI), cellulitis, abdominal infection, and bacteremia. The primary outcome assessed was 28-day mortality. The sequential Organ Failure Assessment (SOFA) score, Oxford Acute Severity of Illness Score (OASIS), and Logistic Organ Dysfunction System (LODS) score were compared. Binomial logistic regression analysis was conducted to evaluate the association between these variables and mortality. Additionally, differences in the area under the curve (AUC) of receiver operating characteristic (ROC) among the scoring systems were analyzed. A total of 4721 patients were included in the analysis. The average 28-day mortality rate was 9.4%. Significant differences were observed in LODS, OASIS, and SOFA scores between the 28-day survival and non-survival groups across different infection sites (p < 0.01). In the pneumonia group and abdominal infection group, both the LODS and OASIS scoring systems emerged as independent risk factors for mortality in septic patients (odds ratio [OR]: 1.165, 95% confidence interval [CI]: 1.109-1.224, p < 0.001; OR: 1.047, 95% CI: 1.028-1.065, p < 0.001) (OR: 1.200, 95% CI: 1.091-1.319, p < 0.001; OR: 1.060, 95% CI: 1.025-1.095, p < 0.001). For patients with UTI, the LODS, OASIS, and SOFA scoring systems were identified as independent risk factors for mortality (OR: 1.142, 95% CI: 1.068-1.220, p < 0.001; OR: 1.062, 95% CI: 1.037-1.087, p < 0.001; OR: 1.146, 95% CI: 1.046-1.255, p = 0.004), with the AUC of LODS score and OASIS significantly higher than that of the SOFA score (p = 0.006). Among patients with cellulitis, the OASIS and SOFA scoring systems were identified as independent risk factors for mortality (OR: 1.055, 95% CI: 1.007-1.106, p = 0.025; OR: 1.187, 95% CI: 1.005-1.403, p = 0.044), with no significant difference in prognosis prediction observed (p = 0.243). In the bacteremia group, the LODS scoring system was identified as an independent risk factor for mortality (OR: 1.165, 95% CI: 1.109-1.224, p < 0.001). The findings suggest that LODS scores offer better prognostic accuracy for predicting the mortality risk in septic patients with pneumonia, abdominal infections, bacteremia, and UTI compared to SOFA scores.

FAdV-4 can cause more noticeable clinical symptoms compared to FAdV-8b after infecting specific pathogen free chickens

Chickens infected with FAdV-4 and FAdV-8b both exhibit hepatic lesions characterized by hemorrhagic necrosis and intranuclear inclusion body formation. However, only FAdV-4 induces pericardial effusion and acute mortality in chickens. To investigate the similarities and differences in the pathogenicity of HPS and IBH, this study intends to compare the infectivity and pathogenicity of FAdV-4 and FAdV-8b, two serotypes of fowl adenovirus isolated in our laboratory. The two viruses were respectively inoculated subcutaneously into SPF chicks at the neck. The clinical manifestations and pathological changes in these infected groups of chickens differed to some extent. Chickens infected with FAdV-4 exhibit evident depression and acute mortality, with a mortality rate of 60%; while those infected with FAdV-8b only display mild depression. Postmortem examination reveals serosanguinous effusion in the pericardial sac, spot-like hemorrhage, and focal necrosis in the liver of chickens infected with FAdV-4. Additionally, various degrees of edema are observed in organs such as the lungs, spleen, kidneys, and pancreas. In contrast, chickens infected with FAdV-8b exhibit spot-like hemorrhage and focal necrosis in the liver but do not display pericardial effusion or widespread organ edema. Histopathological examination demonstrates that both FAdV-4 and FAdV-8b can induce inflammatory reactions of varying degrees in the kidneys, pancreas and duodenum of chickens, while reducing the necrosis of bursa of Fabricius, thymus, and spleen lymphocytes. Our data preliminarily reveal that both FAdV-4 and FAdV-8b can induce strong pathogenicity in chickens.

Recent infection with SARS-CoV-2 in donors was associated with a higher incidence of acute graft-versus-host disease in recipients undergoing allogeneic haematopoietic stem cell transplantation.

The global pandemic has resulted in the common occurrence of SARS-CoV-2 infection in the population. In the post-pandemic era, it is imperative to understand the influence of donor SARS-CoV-2 infection on outcomes after allogeneic haematopoietic stem cell transplantation (allo-HSCT). We retrospectively analysed allo-HSCTs from donors with mild SARS-CoV-2 infection or early recovery stage (ERS) (group 1, n = 65) and late recovery stage (group 2, n = 120). Additionally, we included allo-HSCT from donors without prior SARS-CoV-2 infection as group 0 (n = 194). Transplants from donors with different SARS-CoV-2 infection status had comparable primary engraftment and survival rates. However, group 1 had higher incidences of acute graft-versus-host disease (aGvHD), grade II-IV (41.5% vs. 28.1% in group 0 [p = 0.014] and 30.6% in group 2 [p = 0.067]) and grade III-IV (22.2% vs. 9.6% [p = 0.004] in group 0 and 12.2% in group 2 [p = 0.049]). Conversely, the risk of aGvHD in group 2 was similar to that in group 0 (p > 0.5). Multivariable analysis identified group 1 associated with grade II-IV (hazard ratio [HR] 2.307, p = 0.010) and grade III-IV (HR 2.962, p = 0.001) aGvHD, which yielded no significant risk factors for survival. In conclusion, we preliminarily demonstrated donors in the active infection state or ERS of mild SARS-CoV-2 infection were associated with higher incidences of aGvHD in transplants from related donors.

Seroprevalence and Association of Toxoplasma gondii with Bone Health in a Cohort of Osteopenia and Osteoporosis Patients.

Considering the fact that Toxoplasma is a common parasite of humans and Toxoplasma bradyzoites can reside in skeletal muscle, T. gondii-mediated immune responses may modulate the progression and pathophysiology of another musculoskeletal disorder, osteoporosis. In the current study, we investigated the association of bone health and Toxoplasma gondii infection status. A total of 138 patients living in Germany with either osteopenia or osteoporosis were included in the study, and they were categorized into two groups, T. gondii uninfected (n = 74) and infected (n = 64), based on the presence of T. gondii-specific IgG antibodies. The demographic and clinical details of the study subjects were collected from the medical records. Logistic regression analysis was performed to delineate the association of bone health parameters with the infection status. The prevalence of toxoplasmosis was 46.4% in the study participants. The infected individuals with osteopenia and osteoporosis showed higher levels of mean spine and femoral T score, Z score, and bone mineral density (BMD), indicating improved bone health compared to the uninfected group. Logistic regression analysis showed that subjects with T. gondii infection displayed increased odds of having a higher mean femur T score, femur BMD, and femur Z score even after adjusting for age, creatinine, and urea levels. However, when the duration of drug intake for osteoporosis was taken into account, the association lost statistical significance. In summary, in this study, an improvement in osteopenia and osteoporosis was observed in Toxoplasma-infected patients, which may be partly due to the longer duration of drug intake for osteoporosis in the infected patient group.

Two cytokine receptor family B (CRFB) members in orange-spotted grouper Epinephelus coioides, EcCRFB3 and EcCRFB4, negatively regulate interferon immune responses to assist nervous necrosis virus replication

Receptors of type I interferon (IFNR) play a vital role in the antiviral immune response. However, little is known about the negative regulatory role of the IFNR. Nervous necrosis virus (NNV) is one of the most significant viruses in cultured fish, resulting in great economic losses for the aquaculture industry. In this study, two orange-spotted grouper (Epinephelus coioides) cytokine receptor family B (CRFB) members, EcCRFB3 and EcCRFB4 were cloned and characterized from NNV infected grouper brain (GB) cells. The open reading frame (ORF) of EcCRFB3 consists of 852 bp encoding 283 amino acids, while EcCRFB4 has an ORF of 990 bp encoding 329 amino acids. The mRNA levels of EcCRFB3 or EcCRFB4 were significantly upregulated after NNV infection and the stimulation of poly (I:C) or NNV-encoded Protein A. In addition, EcCRFB3 or EcCRFB4 overexpression facilitated NNV replication, whereas EcCRFB3 or EcCRFB4 silencing resisted NNV replication. Overexpressed EcCRFB3 or EcCRFB4 inhibited the expression of IFN-I-induced ISGs. Taken together, our research provides the first evidence in fish demonstrating the role of IFNRs to regulate the IFN signaling pathway negatively. Our findings enrich the understanding of the functions of IFNRs and reveal a novel escape mechanism of NNV.

Cytomegalovirus antigen-specific multi-cytokine immune responses in patients with rheumatic diseases under different cytomegalovirus infection status: A case-control study

ObjectiveTo explore Cytomegalovirus (CMV) antigen-specific multi-cytokine immune responses in patients with rheumatic disease (RD) under different CMV infection status. MethodsA total of 60 RD patients in our center from March 2023 to August 2023 were enrolled. The patients were divided into latent CMV infection and active CMV infection, the latter was classified as subclinical CMV infection or CMV disease based on presence or absence of symptoms related to CMV. Whole blood was collected and stimulated with QuantiFERON-CMV antigen. The levels of IFN-γ, TNF-α, IL-2, IL-4, IL-6, IL-10, IL-17 and CXCL-2 in supernatant were measured by Luminex Assays. The receiver operating characteristic curve was used to evaluate the diagnostic accuracy of cytokine for distinguishing different CMV infection status. ResultsThe proportion of patients with severe lymphopenia was lowest in the latent CMV infection group, while there were no significant differences in medication usage in different CMV infection status. After stimulation with QF-CMV antigens, the levels of IFN-γ, TNF-α and IL-2 in the CMV disease group were significantly lower than those in the latent CMV infection group. CMV antigen-specific IFN-γ, TNF-α levels and severe lymphopenia together provided the best discriminatory performance for distinguishing between latent and either active CMV infection patients (AUC = 0.854) or CMV disease patients (AUC = 0.935). ConclusionNoninvasive peripheral blood biomarkers (the combination of CMV antigen-specific IFN-γ, TNF-α levels and severe lymphopenia) may have the potential to diferentiate different status of CMV infection in RD population.

Relationship between the clinical outcomes and the systemic inflammatory response index and systemic immune inflammation index after total knee arthroplasty.

Periprosthetic joint infection (PJI) is an extremely damaging complication that can occur after total knee arthroplasty (TKA). There is no study in the literature investigating the relationship between systemic inflammatory response index (SIRI) and systemic inflammation immune index (SII) values and prognosis and infection in patients who have undergone TKA. The aim of the study was to determine the relationship between the inflammatory index values and the rate of PJI in patients who had previously had TKA. A total of 187 patients who underwent TKA between 2015 and 2023years were retrospectively analyzed. The median value of the postoperative SII index was 1862.3 (1146.6-2630.4) in the infected group, while it was 1058.2 (605.0-1762.8) in the non-infected group (p < 0.001). In the infected group, the median value of preoperative SIRI was observed as 2.3 (1.7-3.5), while in the non-infected group it was 0.9 (0.7-1.5) (p < 0.001). The cutoff value for postoperative SIRI was observed to be 2.19, with a sensitivity value of 95%, a specificity value of 46%, the AUC value observed was 65%. The cutoff value for the postoperative SII index was observed to be 1058.96, with a sensitivity value of 100%, a specificity value of 50%. Our study has associated the inflammatory markers SIRI, SII, neutrophil lymphocyte ratio, and platelet lymphocyte ratio with PJI, which are easy and inexpensive to obtain. There is no widely recognized serum biomarker that can be used alone with good sensitivity and specificity. This study contributes to finding the gold standard inflammatory marker for diagnosing PJI.

Hearing loss and its association with the proteome of perilymph, cerebrospinal fluid, and tumor tissue in patients with vestibular schwannoma

This study examined the association between hearing loss in sporadic vestibular schwannoma patients and the proteome of perilymph (PL), cerebrospinal fluid (CSF), and vestibular schwannoma. Intraoperative sampling of PL and of CSF, and biopsy of vestibular schwannoma tissue, was performed in 32, 32, and 20 patients with vestibular schwannoma, respectively. Perilymph and CSF in three patients with meningioma and normal hearing were also sampled. The proteomes were identified by liquid chromatography coupled to high-resolution tandem mass spectrometry. Preoperative hearing function of the patients was evaluated with pure tone audiometry, with mean values at frequencies of 500, 1000, 2000, and 4000 Hz (PTA4) in the tumor-affected ear used to delineate three hearing groups. Analysis of the PL samples revealed significant upregulation of complement factor H-related protein 2 (CFHR2) in patients with severe to profound hearing loss after false discovery rate correction. Pathway analysis of biofunctions revealed higher activation scores in the severe/profound hearing loss group of leukocyte migration, viral infection, and migration of cells in PL. Upregulation of CFHR2 and activation of these pathways indicate chronic inflammation in the cochlea of vestibular schwannoma patients with severe to profound hearing loss compared with patients with normal hearing or mild hearing loss.

Analysis of knee arthroplasty revision causes

Introduction Existing discrepancies in knee arthroplasty registries regarding the definition of indications for revision TKA lead to confusion related to the identification of the leading pathology. Many works indicate not only one but several reasons for revision which makes comparison difficult. Therefore, the issue of categorizing indications for revision TKA is a weak point of the available registries and of any large retrospective series.Purpose To systematize the etiology of pathological conditions leading to revision knee arthroplasty.Materials and methods The study included 361 revision knee arthroplasties. A comparative analysis of the etiology of complications of primary arthroplasty was carried out with data from national arthroplasty registries and clinical studies.Results The main indications for revision knee arthroplasty were infection in 48.2 % of cases (174/361), aseptic implant instability (osteolysis) in 38.2 % (138/361), and instability of the ligamentous apparatus in 4.2 % (15/361). In 98 cases (27.1 %), only one type of complication was identified, and in 263 (85.2 %) more than one. Infection prevailed among early complications (126/234, 54 %) and aseptic loosening (osteolysis) (69/127, 54 %) predominated among late complications.Discussion In our opinion, the indications for revision arthroplasty can be divided into three main etiological groups: periprosthetic infection (group I); conditions associated with a response to polyethylene wear products (osteolysis) (group 2); and biomechanical disorders, which include spatial malposition, incorrect implant sizes and all types of instability (group 3).Conclusion Our systematization of revision arthroplasty causes can help in further research and will be useful in creating a national registry of arthroplasties in Russia.

Swine Colibacillosis: Analysis of the Gut Bacterial Microbiome.

This study aimed to evaluate the disruption of the swine gut microbiota and histopathological changes caused by infection with enterotoxigenic E. coli. Fecal samples were collected from piglets suffering from diarrhea post-recovery and healthy animals. Intestinal tissues were collected for histopathological changes. The results revealed histopathological changes mainly in the ileum of the infected animals compared to those in the ileum of the control and recovered animals. The operational taxonomic units (OTUs) revealed that the E. coli diarrheal group exhibited the highest bacterial richness. Principal coordinate analysis (PCoA) corroborated the presence of dysbiosis in the gut microbiota following E. coli-induced diarrhea. While the normal control and infected groups displayed slight clustering, the recovery group formed a distinct cluster with a distinct flora. Bacteroidetes, Firmicutes, and Fusobacteria were the dominant phyla in both the healthy and recovered piglets and in the diarrheal group. LEfSe and the associated LDA score analysis revealed that the recovered group exhibited dominance of the phyla Euryarchaeota and Bacteroidota, while groups N and I showed dominance of the phyla Firmicutes and Fusobacteriota, respectively. The LDA scores highlighted a significant expression of the Muribaculacea family in group R. The obtained findings will help in understanding the microbiome during swine colibacillosis, which will support control of the outbreaks.

Exploring the impact of acute viral exposure on clinical characteristics and antibody profiles in antiphospholipid syndrome: a study in CAPSTONE

The relationship between antiphospholipid syndrome (APS) and acute viral infection, such as SARS-CoV-2, is unclear. This study aims to assess symptoms, antiphospholipid antibody (aPL) fluctuations, and complication risks in APS patients infected with SARS-CoV-2. APS patients from Peking Union Medical College Hospital during the COVID-19 outbreak (October–December 2022) were included. Age- and gender-matched APS patients without infection served as controls. Data on demographics, symptoms, treatments, and serum aPL levels were analyzed. Of 234 APS patients, 107 (45.7%) were infected with SARS-CoV-2. Typical symptoms included high fever (81.3%), cough/expectoration (70.1%), and pharyngalgia (52.3%). Age- and gender-based matching selected 97 patients in either infected or uninfected group. After infection, anti-β-2-glycoprotein I-IgG (aβ2GP1-IgG) increased from 4.14 to 4.18 AU/ml, aβ2GP1-IgM decreased from 9.85 to 7.38 AU/ml, and anticardiolipin-IgA (aCL-IgA) significantly increased with a median remaining at 2.50 APLU/ml. Lupus anticoagulants and other aPLs remained stable. Arterial thrombosis incidence increased from 18 (18.6%) to 21 (21.6%), while venous thrombosis incidence did not change. Additionally, 7 (6.5%) patients presented either new-onset or worsening thrombocytopenia, characterized by a significant decline in platelet count (no less than 10 × 109/L) within two weeks of SARS-CoV-2 infection, all of which recovered within 2 weeks. Acute SARS-CoV-2 infection may induce or worsen thrombocytopenia but does not substantially increase thrombotic events in APS. The process of SARS-CoV-2 infection was related to mild titer fluctuation of aβ2GP1-IgG, aβ2GP1-IgM and aCL-IgA in APS patients, necessitating careful monitoring and management.