Sample
serum and plasma (EDTA, lithium heparin or citrate plasma)
Intended Use
The CMV IgG ELISA provides materials for the quantitative and qualitative determination of IgG-class antibodies to Cytomegalovirus (CMV) in human serum and plasma (EDTA, lithium heparin or citrate plasma).This assay is intended for research use only.
Contents of Kit
1. Microtiterwells, 12 x 8 (break apart) strips, 96 wells; Wells coated with inactivated grade 2 Cytomegalovirus (CMV) antigen (strain AD-169). (incl. 1 cover foil)
2. Sample Diluent *, 1 vial, 100 mL, ready to use,colored yellow; pH 7.2 ± 0.2.
3. Standard (Standard 1 - 3)*, 3 vials, ready to use, Concentrations: 10, 40, 80 DU/mL,
Standard 1, 2.0 mL, colored green, green cap
Standard 2, 1.0 mL, colored blue, blue cap
Standard 3, 1.0 mL, colored red, red cap
4. Pos. Control *, 1 vial, 1.0 mL, ready to use;colored purple, black cap.
5. Neg. Control *, 1 vial, 2.0 mL, ready to use;colored yellow, yellow cap.
6. Enzyme Conjugate *, 1 vial, 20 mL, ready to use,colored red, antibody to human IgG conjugated to horseradish peroxidase.
7. Substrate Solution, 1 vial, 14 mL, ready to use,Tetramethylbenzidine (TMB).
8. Stop Solution, 1 vial, 14 mL, ready to use,contains 0.2 mol/L H2SO4, Avoid contact with the stop solution. It may cause skin irritations and burns.
9. Wash Solution *, 1 vial, 30 mL (20× concentrated for 600 mL), pH 6.5 ± 0.1
* contain non-mercury preservative
Storage
When stored at 2 °C to 8 °C unopened reagents will retain reactivity until expiration date. Do not use reagents beyond this date.
Opened reagents must be stored at 2 °C to 8 °C. Microtiter wells must be stored at 2 °C to 8 °C. Once the foil bag has been opened, care should be taken to close it tightly again.
Opened kits retain activity for 8 weeks if stored as described above.
Detection Range
1.18 – 80 DU/mL
Citations
Publication ()
Have you cited DEIA326R in a publication?
Let us know and earn a reward for your research.
Immune cell phenotypes and mortality in the Framingham Heart Study
Ahmed A Y Ragab, Margaret F Doyle, Jiachen Chen, Yuan Fang, Kathryn L Lunetta, Joanne M Murabito
Applications: ELISA
Reactive species: Human
"Abstract: Background: Global life expectancy is rising, with the 60 + age group projected to hit 2 billion by 2050. Aging impacts the immune system. A notable marker of immune system aging is the presence of Aging-Related Immune Cell Phenotypes (ARIPs). Despite their importance, links between immune cell phenotypes including ARIPs and mortality are underexplored. We prospectively investigated 16 different immune cell phenotypes using flow cytometry and IL-6 in relation to survival outcome among dementia-free Framingham Heart Study (FHS) offspring cohort participants who attended the seventh exam (1998-2001)."
Article snippet: We performed CMV IgG assay by ELISA (Creative Diagnostics CMV IgG kit Catalog # DEIA326R).
Figure 1. CMV status and mortality.
Circulating immune cell phenotypes are associated with age, sex, CMV, and smoking status in the Framingham Heart Study offspring participants
Yuan Fang, Margaret F Doyle, Jiachen Chen, Jesse Mez, Claudia L Satizabal, Michael L Alosco, Wei Qiao Qiu, Kathryn L Lunetta, Joanne M Murabito
Applications: ELISA
Reactive species: Human
"Abstract: Understanding the composition of circulating immune cells with aging and the underlying biologic mechanisms driving aging may provide molecular targets to slow the aging process and reduce age-related disease. Utilizing cryopreserved cells from 996 Framingham Heart Study (FHS) Offspring Cohort participants aged 40 and older (mean 62 years, 48% female), we report on 116 immune cell phenotypes including monocytes, T-, B-, and NK cells and their subtypes, across age groups, sex, cytomegalovirus (CMV) exposure groups, smoking and other cardiovascular risk factors. The major cellular differences with CMV exposure were higher Granzyme B+ cells, effector cells, and effector-memory re-expressing CD45RA (TEMRA) cells for both CD4+ and CD8+. Older age was associated with lower CD3+ T cells, lower naïve cells and naïve/memory ratios for CD4+ and CD8+. We identified many immune cell differences by sex, with males showing lower naïve cells and higher effector and effector memory cells. Current smokers showed lower pro-inflammatory CD8 cells, higher CD8 regulatory type cells and altered B cell subsets. No significant associations were seen with BMI and other cardiovascular risk factors. Our cross-sectional observations of immune cell phenotypes provide a reference to further the understanding of the complexity of immune cells in blood, an easily accessible tissue."
Article snippet: Therefore, we assayed CMV IgG by ELISA using the Creative Diagnostics CMV IgG kit (Catalog # DEIA326R) using an existing plasma sample from Offspring exam 7 from 943 of the participants with immune cell phenotyping.
Figure 1. Participants age and sex by CMV status
Association of Circulating Immune Cell Phenotypes and Peripheral Inflammatory Biomarkers with Depressive Symptoms in the Framingham Heart Study
Iyer, S., Cao, Y., Liebegott, R., Chen, J., Ragab, A., Doyle, M. F., Lunetta, K. L., & Murabito, J. M.
Psychoneuroendocrinology2026 FebPubMed ID: 41349492Read Article
Applications: ELISA
Reactive species: Human
"Abstract: Background: Depression is a common mental health disorder with substantial impact on older adults. Immune dysfunction has been studied as a mechanism for depressive symptoms, providing the opportunity for new targeted treatment approaches.
Methods: This study investigated the associations between immune cell phenotypes, determined by flow cytometry, and peripheral inflammatory biomarkers, measured using the OLINK Inflammation panel, with Center for Epidemiologic Studies Depression Scale (CES-D) scores, indicative of depressive symptoms, in the Framingham Heart Study Offspring Cohort. Regression models were used with proteins or immune cells as predictors and CES-D scores as the outcome, adjusting for age, sex, BMI, smoking status, CVD, depression medication use, NSAID use, and cytomegalovirus (CMV) status (immune cells only). We used Bonferroni adjusted p < 0.005 to declare significance. Effect estimates (beta) are reported in standard deviation units.
Results: Participants (n = 831) had a mean age 61, were 52 % female, and had a mean CES-D score 5 (SD=7) with 8 % (n = 67) having a CES-D score > /= 16. Our results suggested a positive association between FGF-19 and CES-D score (beta=0.11, p = 0.004), as well as a suggestive negative trend between the CD8 +IL17 + :CD8 +CD25 +FoxP3 + ratio (CD8Tc17/CD8 +Tregs) and CES-D score (beta=-0.1, p = 0.03). In addition, we observed a positive suggestive trend between IL-17C and depressive symptoms (CES-D >/= 16) (beta=0.35 p = 0.009), that strengthened with higher levels of symptoms (p < 0.005).
Conclusion: The positive association between FGF-19 and depressive symptoms may suggest the contribution of metabolic and cognitive dysfunction to the pathophysiology of depression. The link between higher IL-17C levels and high CES-D score increased in strength as the cutoff point for a high CES-D score was increased, suggesting a link between IL-17C and more severe depressive symptoms. This study helps to expand our understanding of the role of inflammation in the pathophysiology of depression."
Article snippet: CMV sero-status was determined by ELISA using the Creative Diagnostics CMV IgG kit (Catalog # DEIA326R) using an existing plasma sample from Offspring exam 7 from 943 of the participants with immune cell phenotyping.
Human cytomegalovirus (HCMV) trends in Sri Lanka: insights from a hospital-based seroprevalence analysis
Sunil-Chandra, N. P., Jayasundara, M. V. M. L., Gunathilaka, M. G. R. S. S., & Suminda, S. D. H.
Applications: ELISA
Reactive species: Human
"Abstract: Background: Human Cytomegalovirus (HCMV) spreads through direct contact with blood, and other body fluids such as urine, saliva and breast milk. It is transmitted sexually and can also be passed from a pregnant mother to fetus via the placenta. While often asymptomatic in healthy individuals, HCMV causes symptomatic infections in immunocompromised people and congenital infections in fetuses. It is a common global congenital infection and can lead to morbidity and occasional mortality in newborns. Latent HCMV may reactivate in immunosuppressed individuals. This study aimed to determine the age and gender specific seroprevalence of HCMV in selected populations in Sri Lanka.
Methods: A total of 820 blood samples obtained from 820 participants of selected low and high-risk populations in Sri Lanka, namely; hospital inpatients (n = 200), antenatal women (n = 80), blood donors (n = 80), cancer patients (n = 200), Sexually Transmitted Disease (STD) clinic attendees (n = 160) and Chronic Kidney Disease (CKD) patients on haemodialysis (n = 100) were tested for IgG antibodies against HCMV by Enzyme Linked Immunosorbent Assay (ELISA). Statistical analysis was performed using IBM SPSS Statistics version 30 (IBM® Corporation, New York, USA).
Results: Overall HCMV seroprevalence was found to be 94.9% (778/820), whereas in males it was 95.2% (395/415) and in females it was 94.6% (383/405) (p = 0.691). Seroprevalence of HCMV in hospital inpatients, antenatal women, blood donors, cancer patients, STD clinic attendees and CKD patients on haemodialysis were found to be 92.5% (185/200), 100% (80/80), 90% (72/80), 96% (192/200), 93.1% (149/160) and 100% (100/100) respectively. Overall seroprevalence of HCMV increases with age ranging from 94.3% (33/35) in 15-19 years age group to 98.8% (84/85) in ≥ 60 years age group.
Conclusions: Seroprevalence of HCMV in diverse low and high-risk populations of Sri Lanka was studied for the first time. HCMV seroprevalence is similar between genders (p > 0.05) and increases with age. Over 90% of individuals are infected with HCMV by age 15, indicating a high prevalence of primary infections from early childhood to adolescence. This study provides essential background information on HCMV infection and its impacts in diverse populations of Sri Lanka and aids in executing preventive and therapeutic measures in high-risk populations."
Article snippet: Serum samples were tested to detect the presence of IgG antibodies against HCMV using a commercially available indirect solid phase ELISA based on the sandwich principle (Cytomegalovirus IgG ELISA, Creative Diagnostics, USA).
The Association of Circulating Immune Cells With Cognitive Function, Brain Imaging, and Incident All-cause and Alzheimer’s Dementia: The Framingham Offspring Study
Cao Y, Salvati LR, Chen J, Ragab A, Mez J, Satizabal CL, Alosco ML, Fang Y, Qiu WQ, Lunetta KL, Murabito JM, Doyle MF
J Gerontol A Biol Sci Med Sci2025 May 5PubMed ID:40168089Read Article
Applications: ELISA
Reactive species: CMV
"Abstract: Emerging evidence supports the central role of the immune system in brain health, yet little is known about the role of circulating immune cells and cognitive function or brain health in dementia-free populations. We investigated the association of 43 immune cells with cognitive function, structural brain imaging, and incident dementia in Framingham Heart Study Offspring participants. Immune cells were phenotyped by flow cytometry. Linear mixed effects models were used for cross-sectional associations between immune cells and 4 cognitive domain scores and 13 brain magnetic resonance imaging measurements. Cox proportional hazards regression models tested the relationship between immune cells and time to dementia. Models were adjusted for age, sex, education, cytomegalovirus status, and APOE genotype, with further adjustment for cardiovascular risk factors. Data was further stratified by cytomegalovirus status. Among 795 participants with cellular phenotyping, cognitive testing and brain imaging data (mean age 61, 52% women), there were no associations between immune cells and cognitive test scores. Several significant associations between immune cells and regional brain magnetic resonance imaging measurements were observed. Higher CD8+ cells [CD8+CD45RO-CCR7-CD27- (Teff), CD8+CD45RA+CD28-CD57+(TEMRA), CD8+CD27-CD28-] associated with greater cerebrum gray and frontal gray matter volumes and inclusion of cardiovascular risk factors strengthened the association. Among CMV+ participants, CD8+TEMRA and CD8+Teff cells were significantly associated with higher total gray and frontal gray matter volumes. No significant associations were observed between immune cells and incident all-cause or Alzheimer's disease dementia. The pathobiology underpinning the associations between immune cells and brain volumes require further study and validation in diverse samples."
Article snippet: We assayed CMV IgG (measured in U/ml) by ELISA using the Creative Diagnostics CMV IgG kit(Catalog # DEIA326R) using an existing plasma sample from Offspring exam 7.
Figure 1. Forest plots of the significant associations of immune cells with brain MRI phenotypes in the full cohort and stratified by CMV status.