Quantitative Analysis of SARS-CoV-2 Antibody Status between Patients with Cancer and Healthy Individuals with Extended Vaccination Dosing Intervals in Canada

(1) Background: To date, data addressing the antibody response of cancer patients to SARS-CoV-2 vaccines are limited. To our knowledge, this is the first report to evaluate humoral immunity. responses in Canadian cancer patients. (2) Methods: 116 cancer patients and 35 healthy participants were enrolled in this cross-sectional study. The interval between the first and second doses were closely matched during analysis. IgG antibodies against the SARS-CoV-2 spike receptor–binding domain were determined using an enzyme-linked immunosorbent assay (ELISA). (3) Results: Following two doses of SARS-CoV-2 vaccine (including BNT162b2, AZD1222, and mRNA-1273), the mean serum anti-spike protein antibody level was 382.4 BAU/mL (binding antibody unit, SD ± 9.4) in the control group, 265.8 BAU/mL (±145.7) in solid cancer patients, and 168.2 BAU/mL (±172.9) in hematological cancer patients. Observed differences were significantly lower in both solid and hematological groups when comparing to the control group (p ≤ 0.0001). In solid cancer group, patients with cytotoxic chemotherapy demonstrated significantly lower antibody levels (p < 0.01), whereas the rest of the patients showed similar antibody levels as the healthy control. Antibody levels were lower in those on treatment than those off treatment in patients with hematological malignancies (p < 0.0001) but not for those with solid cancers (p = 0.4553). (4) Conclusions: After two doses of the SARS-CoV-2 vaccination, patients with solid and hematological malignancies demonstrated impaired serological responses. This was particularly prominent if there was cytotoxic chemotherapy or systemic therapy in solid and hematological cancer, respectively.

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Profile of Estrogen Metabolism in Endometriosis Patients

Indonesian Journal of Obstetrics and Gynecology ◽

10.32771/inajog.v2i3.394 ◽

2016 ◽

Author(s):

Tirsa Verani ◽

Kanadi Sumapradja

Keyword(s):

Blood Level ◽

Obstet Gynecol ◽

Statistical Significance ◽

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Estrogen Metabolism ◽

Control Group ◽

Cross Sectional ◽

Keywords Endometriosis ◽

Test Result

Objective: To assess the estrone (E1), estradiol (E2) and estriol (E3) blood level and its ratio (E2:E1, E2:E3 and E1:E3) between women with and without endometriosis. Method: We performed an analytical cross sectional study with 27 women with endometriosis and 27 women without endometriosis who met the inclusion criteria. The samples were recruited in Dr. Cipto Mangunkusumo hospital and other satellite hospitals from October 2012 to April 2013. The blood level of estrogen metabolites was examined by enzyme-linked immunosorbent assay (ELISA). Comparison between the two groups was analyzed by using Mann- Whitney test. Result: The level of estrone was found to be lower in endometriosis group compared to that in the control group (54.66 pg/ml vs 73.52 pg/ml, p=0.229). Similarly, the levels of estradiol and estriol were lower in endometriosis group (29 pg/ml vs 35 pg/ml, p=0.815 and 1.11 pg/ml vs 1.67 pg/ml, p=0.095, consecutively). The E2:E1 ratio was higher in endometriosis group (0.51 pg/ml vs 0.38 pg/ml, p=0.164), as well as E2:E3 ratio (26.53 pg/ml vs 21.11 pg/ml, p=0.223) and the E1:E3 ratio (58.55 pg/ml vs 50.28 pg/ml, p=0.684). However, all those differences were not statistically significant. Conclusion: The estrone, estradiol and estriol levels in women with endometriosis were lower compared to those in women without endometriosis. The ratio of E2:E1, E2:E3 and E1:E3 were higher in endometriosis group. However, all those differences failed to reach statistical significance. [Indones J Obstet Gynecol 2014; 3: 127-131] Keywords: endometriosis, estradiol, estriol, estrogen, estrone

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Effect of Flavor Enhancement on the Appreciation of Food in Breast Cancer Patients Undergoing Chemotherapy

Current Developments in Nutrition ◽

10.1093/cdn/nzaa044_019 ◽

2020 ◽

Vol 4 (Supplement_2) ◽

pp. 320-320

Author(s):

Kenza Drareni ◽

Moustafa Bensafi ◽

Helene Lusson ◽

Damien Vansteene ◽

Agnès Giboreau ◽

...

Keyword(s):

Breast Cancer ◽

Cancer Patients ◽

Hierarchical Cluster ◽

Cross Sectional Study ◽

Control Group ◽

Breast Cancer Patients ◽

Cross Sectional ◽

Funding Sources ◽

Significant Difference ◽

The Impact

Abstract Objectives Given the influence of sensory signals on food intake regulation and the subsequent nutritional status, it is important to reduce the impact of commonly observed smell and taste alterations on the pleasure of eating during chemotherapy. This study aimed to examine the effect of various types of flavor enhancement on the appreciation of an appetizer by a group of patients undergoing chemotherapy. Methods Five eggplant appetizers with no seasoning (REF) or enhanced with either salt, lemon, garlic or cumin were developed. In this cross-sectional study, 36 healthy female subjects (age 58 ± 7 y) (control group) and 84 breast cancer patients (age 56 ± 11 y) treated with chemotherapy were recruited. A hierarchical cluster analysis based on patients' self-reported smell and taste abilities classified the patients in two groups: the ‘unaltered, (high sensory abilities) n = 49’ and the ‘altered, (poor sensory abilities), n = 35’ group. Participants tasted and assessed the appreciation of the reference appetizer on a visual analog scale and performed a randomized comparative liking task, by rating the appreciation for each flavor-enhanced appetizer relative to the REF (one-sample t-test). Results There was no significant difference in the appreciation of the REF appetizer between the three groups (P > 0.05). In the comparative liking task, the control group rated similarly the appreciation between the flavor-enhanced and the REF appetizers except for the cumin-enhanced appetizer, which was appreciated significantly more than the REF (P < 0.001). Patients in both ‘altered’ and ‘unaltered’ groups appreciated similarly the cumin appetizer (P > 0.05), more the salt and garlic-enhanced appetizers (P ≤ 0.001, P = 0.005, respectively) and significantly less the lemon-enhanced appetizer relative to the REF (P = 0.029), confirming a tendency for patients to reject acid-flavored foods. Conclusions The salt and garlic enhancements were appreciated by the patients independent of the stage of chemotherapy or the severity of smell and taste alterations. Flavor enhancement seems a good strategy to maintain the pleasure of eating in patients undergoing chemotherapy. Further research is still needed on the appreciation and intake of a complete meal (starter, main course, dessert). Funding Sources APICIL and ELIOR groups.

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Antibody Profile of Colostrum and the Effect of Processing in Human Milk Banks: Implications in Immunoregulatory Properties

Journal of Human Lactation ◽

10.1177/0890334417706359 ◽

2017 ◽

Vol 34 (1) ◽

pp. 137-147 ◽

Cited By ~ 11

Author(s):

Claudio Rodríguez-Camejo ◽

Arturo Puyol ◽

Laura Fazio ◽

Analía Rodríguez ◽

Emilia Villamil ◽

...

Keyword(s):

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Cross Sectional ◽

Convenience Sample ◽

Specific Antibodies ◽

Specific Reactivity ◽

Antibody Profile ◽

Milk Banks ◽

Antibody Levels ◽

Mother’S Own Milk

Background: When feeding preterm infants, donor milk is preferred if the mother’s own milk is unavailable. Pasteurization may have detrimental effects on bioactivity, but more information is needed about its effects on the immunological compounds. Research aim: This work has two main aims: evaluate the antibody profile of colostrum and study the quantitative variations in the antibodies’ level and specific reactivity after undergoing Holder pasteurization. The authors focused on immunoregulatory components of colostrum (antidietary antibodies and TGF-β2) in the neonatal gut. Methods: This is a descriptive cross-sectional study of a convenience sample of 67 donated colostrum samples at different days after delivery, both raw and pasteurized. Antibody profiles were analyzed at different times during breastfeeding, and total and specific antibodies (IgM, IgA, and IgG subclasses) were compared with tetanus toxoid and ovalbumin using enzyme-linked immunosorbent assay. The processing effect on total and specific antibodies, as well as TGF-β2, was evaluated by paired analyses. Results: No variations in immunological compounds were observed throughout the colostrum stage. The TGF-β2, antibodies’ concentrations, and antibodies’ specific reactivity after pasteurization did not vary significantly as days of lactation varied. Changes in antibody levels were dependent on isotype and IgG subclass, and IgG4 showed remarkable resistance to heating. Moreover, the effect of the pasteurization on specific reactivity was antigen dependent. Conclusion: The supply of relevant immunological components is stable throughout the colostrum stage. The effects of pasteurization on antibodies depend on isotype, subclass, and specificity. This information is relevant to improving the immunological quality of colostrum, especially for preterm newborns.

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Serum levels of ARMS2, COL8A1, RAD51B, and VEGF and their correlations in Age-Related Macular Degeneration

Current Neurovascular Research ◽

10.2174/1567202618666210531130711 ◽

2021 ◽

Vol 18 ◽

Author(s):

Priya Battu ◽

Kaushal Sharma ◽

Manjari Rain ◽

Ramandeep Singh ◽

Akshay Anand

Keyword(s):

Macular Degeneration ◽

Serum Levels ◽

Cross Sectional Study ◽

Statistical Correlation ◽

Age Related Macular Degeneration ◽

Enzyme Linked Immunosorbent Assay ◽

Control Group ◽

Cross Sectional ◽

Age Related ◽

Study Results

Background: Many factors including genetic and environmental are responsible for the incidence of age-related macular degeneration (AMD). However, its pathogenesis has not been clearly elucidated yet. Objective: This study aimed to estimate the Age-Related Maculopathy Susceptibility 2 (ARMS2), Collagen type VIII Alpha 1 chain (COL8A1), Rad 51 paralog(RAD51B), and Vascular Endothelial Growth Factor (VEGF) protein levels in serum of AMD and control participants and to further investigate their correlation to understand AMD pathogenesis. Methods: For this cross-sectional study, 31 healthy control and 57 AMD patients were recruited from Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India. A blood sample was taken and serum was isolated from it. ELISA(enzyme-linked immunosorbent assay)was used for the estimation of proteins in the serum of patients. Results: ARMS2 and COL8A1 levels were significantly elevated in the AMD group than in the control group. The highest levels of ARMS2, COL8A1, and VEGF proteins were recorded for the wet AMD sub-group. The study results endorsed significant positive correlation between these following molecules; ARMS2 and COL8A1 (r=0.933, p<0.0001), ARMS2 and RAD51B (r=0.704, p<0.0001), ARMS2 and VEGF (r=0.925, p<0.0001), COL8A1 and RAD51B (r=0.736, p<0.0001), COL8A1 and VEGF (r=0.879, p<0.0001),and RAD51B and VEGF (r=0.691, p<0.0001). Conclusion: The ARMS2 and COL8A1 levels were significantly higher and RAD51B was significantly lower in the AMD group than controls. Also, a significant statistical correlation was detected between these molecules, indicating that their interaction may be involved in the pathogenesis of AMD.

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Humoral Immunity against Measles in Mother–Infant Pairs during the First Year of Life in Greece: A Cross-Sectional Study

Vaccines ◽

10.3390/vaccines9020143 ◽

2021 ◽

Vol 9 (2) ◽

pp. 143

Author(s):

Florentia Kanakoudi-Tsakalidou ◽

Evangelia Farmaki ◽

Eleni Papadimitriou ◽

Anna Taparkou ◽

Eleni Agakidou ◽

...

Keyword(s):

Pediatric Population ◽

Epidemiological Data ◽

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Cross Sectional ◽

Humoral Immune ◽

Measles Antibodies ◽

Measles Outbreaks ◽

First Year Of Life ◽

Antibody Levels

Measles outbreaks have surfaced in Europe during the last decades. Infants <12 months of age were the most severely affected pediatric population. The aim of this study was to investigate the duration of maternally derived measles antibodies in infants aged 1 to 12 months in relation to maternal humoral immune status and other parameters. In a prospective, cross-sectional cohort study, 124 mother/infant pairs and 63 additional infants were recruited from October 2015 through December 2019. Infants were hospitalized in a university pediatric department of a general hospital. Demographic and epidemiological data were recorded and blood samples were collected from mothers and their infants. Commercially available enzyme-linked immunosorbent assay (ELISA) was used for measuring measles antibodies. Fifty nine percent of mothers had vaccine-induced and 15% infection-acquired measles immunity. Eighty-eight percent and 94% of infants were unprotected by 5 and 10 months of age, respectively. Maternal antibody levels and infant age were significant independent predictors of infants’ antibody levels whereas the method of maternal immunity acquisition, age, and origin [Greek/non-Greek] were not. Our findings suggest that about 90% of infants are susceptible to measles beyond the age of 4 months. To our knowledge, these are the first data from Greece reported under the current community composition and epidemiological conditions.

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Seroprevalence of Hepatitis A and Hepatitis E Viruses among Pregnant Women in Northern Iran

Infectious Diseases in Obstetrics and Gynecology ◽

10.1155/2021/5130586 ◽

2021 ◽

Vol 2021 ◽

pp. 1-5

Author(s):

Farzin Sadeghi ◽

Zahra Golchob ◽

Maryam Javadian ◽

Mohammad Barary ◽

Parisa Sabbagh ◽

...

Keyword(s):

Pregnant Women ◽

Hepatitis A ◽

Hepatitis E ◽

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Serum Samples ◽

Northern Iran ◽

Cross Sectional ◽

Proactive Measures ◽

Antibody Levels

Background. Hepatitis A (HAV) and hepatitis E viruses (HEV) are endemic in Iran and are known major causes of acute viral hepatitis. Also, during pregnancy, they are associated with severe outcomes. Therefore, it is vital to evaluate the antibody levels against HAV and HEV in pregnant women to avoid severe outcomes incidence. Study design and methods. A total of 247 pregnant women were enrolled in this prospective cross-sectional study. In addition to completing the questionnaire and interviewing all participants, the serum samples were tested for anti-HAV and anti-HEV IgG using the enzyme-linked immunosorbent assay (ELISA). The association between anti-HAV and anti-HEV antibodies status and risk factors was evaluated. Results. The mean age of patients was 28.06 ± 5.29 years. Anti-HAV antibody was found in 111 patients (44.9%), while anti-HEV antibody was detected in only two pregnant women (0.8%). The seroprevalence of HAV was inversely related to the level of education. There was no significant correlation between HAV antibody levels and age, marital status, residence location, and pregnancy trimesters. Conclusion. Considering many complications of these diseases in pregnancy, the detection of enteroviral hepatitis, especially HAV in pregnant women, is necessary, and therefore, proactive measures, such as promoting education, improving people awareness, and vaccination, are recommended.

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Circulating ErbB3/HER3 Levels are Associated with Increased Risk of Hypertension with Overweight: A Cross-Sectional Study

10.21203/rs.3.rs-70059/v1 ◽

2020 ◽

Author(s):

Lijun Zhu ◽

Zhengmei Fang ◽

Yuelong Jin ◽

Weiwei Chang ◽

Mengyun Huang ◽

...

Keyword(s):

Blood Pressure ◽

Cardiovascular Disease ◽

Body Mass Index ◽

Body Mass ◽

Conditional Logistic Regression ◽

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Control Group ◽

Cross Sectional ◽

Increased Risk

Abstract Background: Hypertension and overweight are both independent risk factors for cardiovascular disease，and being overweight can more likely to develop high blood pressure. Recent research has shown that ErbB3/HER3 played a considerable role in the development of cardiovascular disease. However, ErbB3 levels effects in the hypertensive overweight patients are unknown. This study aimed to assess the association between ErbB3 levels and hypertension with overweight in Chinese population. Methods: 128 Chinese adults aged 33-79 years, both sexes, underwent evaluation of height and weight, blood pressure, biochemical indicators and ErbB3 levels. Plasma ErbB3 levels was assessed by the Enzyme-linked immunosorbent assay (ELISA), and body mass index (BMI) was calculated as body weight divided by height squared. Participants were allocated in three groups according to blood pressure and BMI: healthy control group (CNT; n = 31; normotensive and nonoverweight), hypertension group (HT; n = 33; hypertension and nonoverweight) and hypertension with overweight group (HTO; n = 64; hypertension and overweight). A 2-tailed P<0.05 was defined to be statistically significant. Results: The difference in mean of ErbB3 levels in three groups was not significant, but had a linear decrease in males, in CNT (1.13±0.36), HT (1.03±0.36) and HTO (0.84±0.26) ng/ml, with P was 0.007. In drinking population, the ErbB3 was significantly reduced in the HTO group as compared with the CNT and HT groups (0.76±0.23 versus 1.18±0.37 and 1.20±0.30, respectively). ErbB3 levels was negatively correlated with DBP in males(r=-0.293, P=0.012), in smoking populations (r=-0.47, P=0.004) and drinking populations (r=-0.387, P=0.008). Besides, BMI in males and in drinking populations and UA in males presented negatively correlations with ErbB3 (p＜0.05). The multivariate conditional logistic regression showed that plasma ErbB3 levels was associated with reduced risk for HTO in males (OR 0.054; 95% CI: 0.007-0.412) and drink group(OR 0.002; 95% CI: 0.000-0.101). Conclusions：The apparent association between lower ErbB3 levels and overweight hypertensive patients suggested that ErbB3 may contribute to the pathogenesis to hypertension with overweight, with BMI, gender, and drinking all potentially modulating the process.Keywords: ErbB3; Hypertension; Overweight; Body mass index.

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Seroprevalence of Leptospirosis among High-Risk Individuals in Morocco

Interdisciplinary Perspectives on Infectious Diseases ◽

10.1155/2020/5236045 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Mohamed El Azhari ◽

Mathieu Picardeau ◽

Imad Cherkaoui ◽

Mohamed Anouar Sadat ◽

Houda Moumni ◽

...

Keyword(s):

High Risk ◽

Risk Groups ◽

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Control Group ◽

Serum Samples ◽

Cross Sectional ◽

Control And Prevention ◽

High Risk Populations ◽

Human Blood Samples

Background. Leptospirosis is an anthropozoonotic reemerging neglected infectious disease underreported in most developing countries. A cross-sectional study was performed between 17 and 23 February 2014 to estimate the seroprevalence of leptospirosis among high-risk populations in Casablanca (Morocco). Methods. A total of 490 human serum samples (97.6% males) were collected in 3 high-risk occupational sites including the biggest meat slaughterhouse (n = 208), a poultry market (n = 121), and the fish market (n = 161). A total of 125 human blood samples were also collected from the general population and used in this study as a control group. To detect the presence of anti-Leptospira, sera were screened with in-house IgG and IgM enzyme-linked immunosorbent assay (ELISA). Positive samples were tested by Microscopic Agglutination Technique (MAT) using a panel of 24 serovar cultures and cut point of 1 : 25. Results. Seroprevalence of leptospirosis among the control group was 10.4% (13/125). A high seropositivity among the overall seroprevalence of 24.1% (118/490) was observed in the high-risk groups of which 7.3% (36/490), 13.7% (67/490), and 3.1% (15/490) were for anti-Leptospira IgM, IgG, and both IgG and IgM antibodies, respectively. Most of the positive individuals were occupationally involved in poultry (37.2%), followed by the market fish (26.1%) and the meat slaughterhouse (14.9%) workers. Among all ELISA-positive serum samples, 20.3% (n = 24) had positive MAT responses, of which the Icterohaemorrhagiae (n = 7) is the most common infecting serogroup followed by Javanica (4), Australis (2), and Sejroe, Mini, and Panama (one in each). In the remaining 8 MAT-positive sera, MAT showed equal titers against more than one serogroup. Conclusion. Individuals engaged in risk activities are often exposed to leptospiral infection. Therefore, control and prevention policies toward these populations are necessary.

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Abstract W P205: Potential Hematological Biomarkers of Stroke in Cancer Patients

Stroke ◽

10.1161/str.46.suppl_1.wp205 ◽

2015 ◽

Vol 46 (suppl_1) ◽

Author(s):

Dylan Bobrow ◽

Kajal J Kothadia ◽

Hooman Kamel ◽

Costantino Iadecola ◽

Mitchell S Elkind ◽

...

Keyword(s):

Cancer Patients ◽

Tertiary Care ◽

Endothelial Activation ◽

Cross Sectional Study ◽

Cancer Center ◽

Solid Cancer ◽

Cross Sectional ◽

Stage 4 ◽

Stroke Group ◽

D Dimer

Introduction: Cancer patients can develop hypercoagulability, leading to stroke. The pathophysiology of cancer-mediated hypercoagulability, however, is poorly understood and biomarkers associated with stroke in cancer patients are uncertain. Methods: We performed a pilot cross-sectional study at a tertiary-care cancer center to evaluate potential hematological biomarkers of stroke in cancer patients. From October 2013 through May 2014, we prospectively identified 15 inpatients with active systemic cancer and acute ischemic stroke and 15 inpatients with active systemic cancer and no stroke. Using collected plasma, we compared six potential biomarkers of stroke, selected in advance based on expert opinion and prior data, which included markers of coagulation (thrombin-antithrombin complex and D-dimer), platelet function (P-selectin), and endothelial activation state (sICAM-1, vICAM-1, and thrombomodulin). We used the Wilcoxon rank-sum test to compare biomarker levels between groups. Results: Each group comprised 14 patients with solid cancer and one patient with hematological cancer. All patients in the cancer and stroke group had stage 4 disease, while only 60% of the cancer and no stroke group had stage 4 disease. Age and demographics were similar between groups. Median levels of thrombin-antithrombin complex, D-dimer, P-selectin, sICAM-1, and vICAM-1 were significantly increased in cancer patients with stroke, but thrombomodulin was not (Table). Our results were substantially unchanged in a sensitivity analysis limited to patients with only stage 4 cancer. Conclusion: These preliminary data suggest that thrombin-antithrombin complex, D-dimer, P-selectin, sICAM-1, and vICAM-1 could serve as the focus of future prospective studies to elucidate the potential predictive, diagnostic, or etiologic role of hematological biomarkers for stroke in the cancer population.

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Seroprevalence of hepatitis A and hepatitis E viruses among pregnant women in Northern Iran

10.1101/2021.04.15.21255531 ◽

2021 ◽

Author(s):

Farzin Sadeghi ◽

Zahra Golchob ◽

Maryam Javadian ◽

Mohammad Barary ◽

Parisa Sabbagh ◽

...

Keyword(s):

Pregnant Women ◽

Hepatitis A ◽

Hepatitis E ◽

Cross Sectional Study ◽

Enzyme Linked Immunosorbent Assay ◽

Serum Samples ◽

Northern Iran ◽

Cross Sectional ◽

Proactive Measures ◽

Antibody Levels

Background: Hepatitis A (HAV) and Hepatitis E viruses (HEV) are endemic in Iran and are known major causes of acute viral hepatitis. Also, during pregnancy, they are associated with severe outcomes. Therefore, it is vital to evaluate the antibody levels against HAV and HEV in pregnant women to avoid severe outcomes incidence. Study design and methods: A total of 247 pregnant women were enrolled in this prospective cross-sectional study. In addition to completing the questionnaire and interviewing all participants, the serum samples were tested for anti-HAV and anti-HEV IgG using the enzyme-linked immunosorbent assay (ELISA). The association between anti-HAV and anti-HEV antibodies status and risk factors was evaluated. Results: The mean age of patients was 28.06 +- 5.29 years. Anti-HAV antibody was found in 111 patients (44.9%), while anti-HEV antibody was detected in only two pregnant women (0.8%). The seroprevalence of HAV was inversely related to the level of education. There was no significant correlation between HAV antibody levels and age, marital status, residence location, and pregnancy trimesters. Conclusion: Considering many complications of these diseases in pregnancy, the detection of enteroviral hepatitis, especially HAV in pregnant women, is necessary, and therefore, proactive measures, such as promoting education, improving people awareness, and vaccination, are recommended.

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