جستجوی مقالات مرتبط با کلیدواژه « igg » در نشریات گروه « پزشکی »

One of the critical cases of recurrent pregnancy loss is immunological factors, whereas obtaining effective prevention or treatment is necessary for cognition of reasons.

In this study, we tried to evaluate some immunological factors related to recurrent pregnancy loss.

This case-control study was conducted on 66 women at the age of 18-35 yr who were referred to the Clinic of Gynecology and Obstetrics, Ali Ibn Abi Taleb hospital, Zahedan, Iran, from August-December 2019. Interleukin 33 (IL-33) serum levels were measured using enzyme-linked immunosorbent assay. Immunoglobulin G, Immunoglobulin A, Immunoglobulin M (IgM), and C-reactive protein levels were measured by serology and hematology methods.

The mean age of total participants was 30.8 ± 3.80 yr. The mean serum IL-33 in the case group was 318.5±  254.1 pg/ml and was lower than the control group (354.2±  259.9 pg/ml), which was not statistically significant (p = 0.52). The level of C-reactive protein in the case and control was not significantly different (p = 0.27), and Immunoglobulin A and Immunoglobulin G in the case and control were also not significantly different) p = 0.46, and p = 0.16, respectively), but there were significant differences (p=  0.003) between the level of the IgM in the case and control groups.

No statistically significant difference was observed in the IL-33 serum level, for at least 4-6 months after the last abortion in the case group and the final live birth in the control group. In contrast, serum levels of IgM were statistically significant. Finally, the need for more studies is felt according to the different results of the previous studies in this field.

This study aimed to compare the production of antibodies in three different groups of patients with COVID-19. These groups included patients with pulmonary and cerebral symptoms, as well as those with mild symp- toms.

Blood samples were collected from 80 patients admitted to COVID-19-specific hospitals. The pa- tients had various forms of SARS-CoV-2 disease, including those with pulmonary symptoms, brain involvement, and those with positive PCR test results but mild symptoms. The enzyme-linked immunosorbent assay (ELISA) technique was used to determine the levels of IgM and IgG antibody titers.

The levels of IgM and IgG antibody production differed significantly between groups of patients experiencing pul- monary symptoms and cerebral symptoms, with mild symptom patients also showing differences (P=0.0068), (P=0.0487), (P<0.0001), and (P=0.0120), respectively. Furthermore, there was no significant relationship between IgM antibody secre- tion and age or pulmonary involvement (P=0.1959). However, there was a direct and significant relationship between age and brain involvement (P=0.0317).

The findings of this study revealed that the risk of central nervous system involvement increases with age and that older people have lower antibody levels than younger people. Consequently, strengthening the immune systems of peo- ple over the age of 78 during this pandemic through vaccination and nutrition is very effective in reducing mortality in this age group.

Considering the role of Helicobacter pylori in various diseases such as chronic gastritis, gastric ulcer and malignancies, this study was performed to evaluate the level of anti-Helicobacter pylori antibodies in the serum of the population of Chalous and then its relationship with demographic characteristics.

A descriptive study was conducted in the department of Microbiology in a tertiary care teaching hospital during December 2019 to May 2021. All hospitalized patients with diarrhea, who had a history of exposure to antibiotic drugs and all patients with IBD were included in the study. Stool samples were collected from all patients with diarrhea who have been on antibiotic or anticancer drug during last 6weeks or previously diagnosed case. Patient’s demographic features and clinical details were collected from medical records.

About 78% of people had IgA positive titer and about 48% had IgG positive titer. Serum IgA level in patients with bloating (P = 0.005) and in patients with nausea (P = 0.016) was statistically significant. Also, in patients studied there was a significant relationship between bloating (p = > 0.001), nausea (0.013) was seen with a serum IgG level .

Due to the high percentage of positive titers of anti-Helicobacter pylori antibodies, especially IgA in the sample population, it seems that the follow-up of positive serological titers will help to prevent and control the prevalence of Helicobacter pylori infection.

This study investigated the serum levels of Covid-19 IgM-IgG antibodies in three exposure groups in the Shahid Hasheminejad Hospital in Mashhad, Iran. Between March 2020 and March 170, 2021 serum samples were taken from hospital personnel. To determine the levels of COVID-19 IgM-IgG antibodies, we used the ELISA method (Pishgaman kit). Results were categorized as negative if they were less than 0.9, borderline if they were between 0.9 and 1.1, and positive if they were greater than 1.1. We used SPSS version 26 to evaluate the data. The exposure groups were separated into low (first group), moderate (second group), and high-risk (third group) levels. 53 members of the 170 staff belonged to the first group, 51 to the second, and 66 to the third. There were 135 patients with negative IgG, 13 with IgG in the borderline range, and 22 with positive IgG. Furthermore, 9 individuals exhibited a positive IgM, while one had a borderline range IgM and 160 a negative IgM. In the first group, 56.6% of personnel reported cough, 5.9% of personnel in the second group had fever, and 24.2% of personnel in the third group experienced shortness of breath.The findings from this research indicated that there was no clear association between working in wards with higher risks and increased IgG and IgM levels. However, the results did reveal that being in wards with a high number of COVID-19 patients could result in more fever symptoms.

Hepatitis A virus (HAV) can have severe manifestations in adult patients with other liver diseases, particularly in those infected with human immunodeficiency virus (HIV). This study aimed to measure immunity against HAV in HIV-positive individuals to determine the necessity of vaccination against HAV in this population.

This cross-sectional study investigated 171 HIV-positive patients aged 18 years or older who were tested for serum IgG anti-viral hepatitis A antibody. The prevalence and its determinants were analyzed based on patient data.

The average age of the patients was 44.2 years old. The prevalence of HAV antibody positivity was 97.7%. The prevalence was higher in patients older than 30 years. There was a close association between hepatitis C virus (HCV) infection (P = 0.002). There were no significant correlations between antibody levels and sex, marital status, employment status, education level, economic status, smoking status, drug use status, and physical activity level. The mean and median CD4 + counts in patients with positive (reactive) antibody (Ab) levels were 458 and 404 ± 294, respectively, while the mean and median CD4 + counts in patients with non-reactive antibody levels were 806 and 737 ± 137, respectively, in those who tested negative for anti-HAV Ab (P = 0.05).

The prevalence of anti-hepatitis A IgG antibodies in people with HIV was very high in Shiraz. There is an increasing trend in the number of older patients and those with HCV infections. The negative association with CD4 was borderline in this study, which needs to be confirmed in larger groups.

Helicobacter pylori infection is one of the most common chronic bacterial infections in humans, affecting large populations worldwide.

The aim of this study was to investigate the relationship between H. pylori infection prevalence with ABO and Rh blood groups.

This descriptive-analytical study was conducted with a case-control design on individuals with anti-H. pylori positive test. Patients with IgG pylori were included in the study based on the inclusion criteria. The individuals were divided into two groups based on antibody titer. The case group included subjects with positive serological results with a titer greater than 12 u/mL IgG, and the control group entailed subjects with negative serological results with a titer less than 8 u/mL IgG. The ABO and Rh blood groups of both groups were examined based on case information. Finally, the data were entered into the SPSS software, and a significance level of 5% was considered for all analyses.

According to the results of this study, there was no significant relationship between the blood group and H. pylori infection (P > 0.05). However, the prevalence of blood type A was significantly higher in individuals with positive H. pylori IgG test.

The current study suggests no association between ABO and Rh groups, but people with A blood group infected with H. pylori need more attention.

Controlling nutrition and exercise can affect the density and metabolism of bone tissue. Therefore, the aim of the present study was to investigate the effect of eight weeks of moderate intensity continuous training (MICT) and high intensity interval training (HIIT) along with Citrus aurantium (CA) on bone metabolic markers of elderly female rats.  In this experimental study, 64 elderly female rats (14 ± 2 months old and weight of 290 ± 25 grams) were divided into 7 groups including 1) control, 2) MICT, 3) HIIT, 4) MICT+CA, 5) HIIT+CA, 6) CA and 7) sham (normal saline) groups. HIIT with an intensity of 85- 110% VO2max and MICT with an intensity of 65% VO2max were performed and CA was injected at the doses of 300 mg/kg/day intraperitoneally. The variables were measured using the ELISA method with the Pars Azmoun kit. The data of the present research were analyzed using one-way analysis of variance and Tukey post hoc test (P≤0.05).  In MICT group the PTH and Na levels were significantly lower and Ca levels were higher than the C group (P≤0.05). PTH and Na levels in the MICT group were lower than the HIIT group (P≤0.05). Ca levels in the CA group were higher than the C group (P≤0.05). In MICT+CA and HIIT+CA groups, PTH levels were lower and Ca levels were higher than the C group (P≤0.05). Also, PTH and Na levels in HIIT+CA group were lower than the MICT+CA group (P≤0.05).  it seems that MICT has a better effect on bone metabolic markers than HIIT; meanwhile, HIIT with an antioxidant such as CA has more favorable effect on bone metabolic markers.

Considering the high prevalence and clinical importance of herpes simplex virus (HSV) infection worldwide, we aimed to evaluate the seroprevalence of HSV-1 and HSV-2 in a population aged between 15 and 35 years in Mashhad, Iran.

This cross-sectional study was conducted on 916 cases composed of 288 (31.4%) men and 628 (68.6%) women. Using ELISA method, the presence of IgM and IgG antibodies against HSV-1 and HSV-2 was assessed.

Among the population studied, 681 (74.3%) cases were positive for anti-HSV antibodies, while 235 (25.7%) cases were negative. Moreover, no IgMs were found and all positive subjects had IgG antibodies. Age (p < 0.001), occupation (p < 0.001), education (p = 0.006), smoking (p = 0.029), and BMI (p = 0.004) demonstrated a significant association with HSV-1 and HSV-2 infection.

Our study indicates a high seroprevalence of HSV infection; however, there was no cases positive for IgM antibodies, suggesting the high prevalence of latent infection.

 Toxoplasmosis is a common parasitic infection that can endanger mother's and neonates' health during pregnancy. The disease is also prevalent in Iran. This study intended to evaluate the seroepidemiology of toxoplasmosis in neonates and postpartum mothers referred to health centers of Yazd in Iran in 2020.

 Totally, 184 postpartum mothers and 184 neonatal umbilical cords in health centers of Yazd were evaluated for Toxoplasma infection through a specific IgM and IgG antibodies kit. The obtained data were analyzed by SPSS18.

Out of 184 samples of postpartum mothers, 8 cases (4.35%) were seropositive, and 176 (95.65%) were seronegative for IgG antibody; moreover, 7 cases (3.80%) were seropositive, and 177 (96.20%) seronegative for IgM antibody. Also, 184 neonatal umbilical cords were IgM negative, and no toxoplasmosis infection was reported. No significant correlation was found between seroprevalence of Toxoplasma infection and caring for pets, consumption of raw meat, level of education, blood type, job, living area and type of delivery (P>0.05). However, a significant correlation was identified between the number of deliveries and the prevalence of toxoplasmosis (P=0.014). This study also illustrated a low prevalence of Toxoplasma infection in postpartum mothers and no congenital transmission of the disease in diverse health centers of the province. However, there was no statistically significant relationship between risk factors and the prevalence of Toxoplasma.

Herpes simplex virus (HSV) is a neurotropic DNA virus with a high prevalence. Following primary infection, HSV remains dormant in the neural ganglia. Secondary infection can emerge after the reactivation of latent infection, presenting as neurological manifestations. Previous studies have demonstrated the relationship between HSV reactivation and selective involvement of cranial nerves. Depending on the affected nerve, cranial mononeuropathies can present with symptoms, including diplopia, blurred vision, vertigo, unilateral facial palsy, speech impairment, swallowing difficulties, and hoarseness.

This study used a serological assay to compare HSV reactivation frequency between patients with recent idiopathic cranial mononeuropathies and normal individuals.

Plasma samples from 35 idiopathic cranial mononeuropathy cases (57.2% women, mean age 58.37 years) and 35 age and sex-matched healthy controls were analyzed for anti-HSV immunoglobulin G (IgG) and immunoglobulin M (IgM) antibodies by enzyme-linked immunosorbent assay (ELISA).

Anti-HSV IgG antibody was positive in 91.4% of patients and 88.6% of controls. The mean serum anti-HSV IgG antibody level was significantly higher in patients (146.78 ± 60 RU/mL) than in the controls (130.61 ± 52.99 RU/mL) (P-value = 0.037). Anti-HSV IgM antibody was positive in 37.1% of patients and 14.3% of controls (P = 0.042).

The frequency of HSV reactivation was significantly higher in patients with acute idiopathic cranial mononeuropathy than in the healthy controls, indicating the possible role of HSV as an etiology of cranial mononeuropathy.

 Lichen planus is considered a potentially malignant condition with an unknown etiology. This study aimed to determine the carcinoembryonic antigen (CEA) and IgG serum levels in different oral lichenoid lesions before and after treatment with local corticosteroids.

 Two groups of 23 individuals, including oral ulcerative lichenoid lesions patients and healthy ones, were evaluated. Toluidine blue staining and biopsy examinations were carried out while visual analog scale (VAS) was used to evaluate symptoms. By applying corticosteroids, CEA and IgG serum levels were determined before and three weeks after intervention and at the end of the study (9 weeks) with ELISA and turbidimetry methods, respectively.

Before the intervention, there was no significant difference in CEA serum levels between the control and case groups (P=0.19). Moreover, the CEA serum levels indicated no significant difference before and after treatment in the case group (P=0.30). While IgG serum level was significantly higher before the intervention (P=0.01), it decreased significantly in the case group after treatment (P=0.02). In addition, pain intensity reduced significantly in the case group (P=0.05). According to statistics, 8.2% out of 21.7% of patients with positive staining results exhibited dysplasia signs.

 However, neither CEA nor IgG serum levels were different in patients diagnosed with or without dysplasia and positive or negative staining results (P>0.05). IgG serum levels and pain severity effectively decreased in the oral ulcerative lichenoid lesions patients treated with local corticosteroids. Therefore, this treatment can be considered an effective and low-complication treatment modality for lichenoid lesions.

Healthcare workers (HCWs) have a high risk of catching SARS-CoV-2 infection. Seroprevalence studies can provide related data on HCWs with a history of infections. Despite numerous seroepidemiological reports of COVID-19 in different groups, there are no such reports for HCWs working in Rafsanjan City, Iran. This study aimed to determine the SARS-CoV-2 seroprevalence among HCWs.

Blood samples were obtained from 295 participants, including healthcare personnel and administrative staff. The SARS-CoV-2 IgG antibody was measured by the ELISA method, and the obtained data were analyzed with the Chi-square test and logistic regression. A P<0.05 was considered statistically significant.

The previous exposure to COVID-19 was higher in HCWs than in administrative department staff. Fifteen out of 130 (11.5%) participants had experienced SARS-CoV-2 infection without any symptoms. The results of logistic regression indicated that traveling (OR: 018, 95% CI: 0.08–0.74, P=0.001), occupation (OR: 0.2, 95% CI: 0.01–0.94, P<0.05), history of respiratory problems (OR: 0.15, 95% CI: 0.01–1.94, P<0.05), and major clinical signs (OR: 8.09, 95% CI: 3.7-17.66, P<0.001) are important factors which affect SARS-CoV-2 IgG antibodies. 

Our results indicated an occupational risk for SARS-CoV-2 infection among HCWs. Because some HCWs are asymptomatic, their communication, such as traveling, must be controlled, and it is necessary to ensure the safety of HCWs and reduce their transfer to the community and patients.

Coronavirus disease 2019 (COVID-19) has rapidly become a pandemic since it was first reported in late December 2019. Serological reports are of great value to medical specialists in developing health policies. The detection of Immunoglobulin G (IgG) level in COVID-19 patients can specify a preclinical infection or previous exposure to the virus.

This study aims to assess the IgG rate in patients with COVID-19.

This is a cross-sectional study on 172 patients with confirmed COVID-19 (having positive PCR test) in Qazvin, Iran in 2020, including 86 inpatients and 86 outpatients. In order to measure the IgG levels, the serum samples were collected 3-5 weeks after onset of their clinical symptoms. Data were statistically analyzed in SPSS software v. 20, considering the significance level of P<0.05.

Of 172 patients, 81(94.2%) inpatients and 74(86%) outpatients tested positive for IgG, while 5(5.8%) inpatients and 10(11.6%) outpatients tested negative for IgG. The mean IgG level in inpatients was significantly higher than in outpatients (P<0.001) 3-5 weeks after a positive PCR test.

The amounts of IgG in the sera of COVID-19 patients 3-5 weeks after the onset of symptoms can help health care authorities develop policies and control strategies by determining the burden of disease, monitoring the spread of disease, and estimating the epidemiological factors.

Seroprevalence among health care workers (HCWs) has been estimated in different studies in various regions and countries. This study aimed to screen the immunoglobulin M (IgM) and IgG seroprevalences and to assess the durability of IgG seropositivity, as well as the incidence of subsequent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in a group of Iranian HCWs.

This voluntary serological screening was prospectively performed on 800 HCWs (492 females and 308 males) in Hamadan between November 2020 and February 2021. Anti-SARS-CoV-2 IgG and IgM antibodies were assessed by the enzyme-linked immunosorbent assay method at two-time intervals.

Overall, 243 out of 800 (30.38%) and 66 (8.25%) cases were IgG and IgM seropositive at their first antibody assessment, respectively. The male staff had a higher seroprevalence than females (31.49% vs. 29.67% for IgG, P=0.59 and 10.39% vs. 6.91% for IgM, P=0.08). Higher prevalences for both antibodies were found in the age group of 30-39.9 years (P=0.12 and P=0.05, respectively). In the second antibody screening, 81 (56.6%) cases were IgG seropositive. The mean titer of the first IgG antibody assessment in seropositive cases was lower than that of the second titer (2.95±2.07 vs. 5.08±4.01 cut-off index (COI) , P=1.4×10-5 ). Moreover, the comparison of the first and second IgG titers among 81 seropositive cases demonstrated a significantly increased level of anti-SARS-CoV-2 antibody (5.08±4.01 vs. 3.49±2.41 COI, P=0.002).

Our findings revealed that the mean level of the anti-SARS-CoV-2 IgG antibody was significantly increased in the seropositive individuals after 2 months of follow-up.

Helicobacter pylori (H. pylori) is identified as the most frequent agent of bacterial infections in humans which can cause various gastrointestinal diseases. This pathogen has infected approximately half of the world’s population, and its outbreak has varied across different regions. The purpose of this study was to estimate the H. pylori infection prevalence amongst patients in Fardis county, Alborz province, Iran, using noninvasive methods.

A total of 5677 patients were analyzed from September 2020 to October 2021 to detect H. pylori by the use of enzyme-linked immunosorbent assay (ELISA) IgG, IgA, and IgM tests, stool antigen test (SAT), and urea breath test (UBT).

Of 5677 patients, 3486 (61.4%) were female and 2191 (38.6%) were male with the mean age of 38.82 ± 18.289 years old. The overall rate of H. pylori infection positive was 31.46%, and the serological tests were the most prescribed types of tests. The IgG test and then SAT detected the most positive cases. Further, the infection rate was significantly associated with age. Except for the case of IgM, which was higher in females compared to males, no significant difference was found between gender and bacteria outbreak.

This study indicated a decline in H. pylori infection prevalence compared with the prior survey conducted at this center. However, its rate amongst the patients referring to Fardis laboratory is still high.

SARS-CoV-2 is a novel virus that caused the recent global pandemic. Health care workers (HCWs), especially hospital staff, are at a higher risk of infection by this virus than the general population. In this study, anti-SARS-CoV-2 IgG antibodies were assessed in hospital workers.

This prospective seroconversion-based cohort study assessed chronic immunity against covid-19 in the staff of two hospitals, the main referral hospital and a general hospital in Shiraz, south of Iran. A valid and reliable checklist was filled out for each available staff member willing to participate in this study through a face-to-face interview. Furthermore, the titer of anti-covid-19 IgG was measured by ELISA twice; in July 2020 after the second wave of COVID-19 and in February 2021 after the third wave in IRAN.

One hundred forty (65%) of the 214 members who participated in both stages of this consideration were from the COVID-19 referral healing center, and 74 (35%) were from the common clinic. Twelve (5.6%) of staff members had anti-SARS-CoV-2 IgG antibodies, including 10 (7.1%) from the referral healing center and 2 (2.7%) from the common healing center (P = 0.23). In the second measurement (second overview), 79 (36.9%) of members had IgG antibodies; 58 (41.4%) from the primary hospital and 21 (28.3%) from the second healing center (P = 0.039). Cruel of the IgG titer within the first study and the referral clinic was 0.8 ± 0.3 compared to 0.15 ± 0.42 within the common clinic (P = 0.001). These figures were 3.05 ± 4.58 and 1.74 ± 3.53 in both clinics and within the second overview separately (P = 0.003). IgG levels were significantly higher in the second overview compared to the first (P < 0.0001).

During the third wave of COVID-19, a significant proportion of hospital staff developed COVID-19 IgG, especially in the referral hospitals for COVID-19. As a result of their higher and chronic exposure to COVID-19 patients than the general hospital staff, the titer of IgG in the referral hospital staff was also higher. However, the seroconversion rate between the two waves was 1.8 times in the general hospital staff compared to the referral hospital, possibly due to less conservative precautions against covid-19 among them. Even after receiving the anti-covid-19 vaccination, it is important to monitor the immunity of hospital staff to covid-19 and to adhere strictly to standard precautions.

Toxoplasma gondii is a protozoan of the Apicomplexa phylum with widespread distribution in animals and humans. Toxoplasma gondii is also an important cause of infectious diseases in women of reproductive age.

This cross-sectional study aimed to determine the prevalence of anti-T. gondiiIgG antibody and its associated risk factors among women of reproductive age referring to Birjand Comprehensive Health Center, East of Iran.

A total of 300 serum samples were collected from women who were referred to Birjand Comprehensive Health Center to be screened for anti-T. gondii IgG antibodies by enzyme-linked immunosorbent assay (ELISA). Analytical and descriptive statistics were carried out using SPSS software version 20. Descriptive statistics were reported as a percentage and mean (SD). The Chi-squared test was applied to assess the univariate association between independent variables and outcome. The significance level in the test was considered P < 0.05.

The results showed that 8.3% of the subjects with an average age of 27 years were IgG-positive. Contact with cats had a significant effect on positivity for IgG and disease frequency (P < 0.05). On the other hand, age and the place of residence (urban or rural) had no significant effect on disease frequency (P > 0.05). Urban or rural location in all age ranges had no significant effect on IgG positivity (P > 0.05).

Considering the high percentage of T. gondii among negative people in the target population, it is necessary to inform women of the reproductive age about the importance of testing and health issues related to T. gondii.