Microbial Bioactives
Human Metapneumovirus Infection and Glycemic-Renal Dysregulation: Cytokine Correlates and Implications for Type 2 Diabetes Risk in a Case-Control Study
Nahla Ghazi Mohammed Al Loza 1*, Ali Hassanen Ali 2, Teba Habeeb Sayfe 3, Alaa Fadhil Razzaq 4
Microbial Bioactives 9 (1) 1-8 https://doi.org/10.25163/microbbioacts.9110780
Submitted: 21 April 2026 Revised: 23 June 2026 Accepted: 29 June 2026 Published: 30 June 2026
Abstract
Background: Human metapneumovirus (hMPV) is a globally distributed respiratory pathogen capable of provoking a vigorous innate inflammatory response, yet whether this response extends beyond the airway to perturb systemic glucose and renal physiology, with possible relevance to Type 2 diabetes risk, has rarely been examined directly.
Methods: In this case-control study, conducted across hospitals and laboratories in Babil Province, Iraq, between March 2025 and June 2026, we enrolled 60 patients with confirmed hMPV infection and 60 age-matched, non-diabetic healthy controls. Serum interleukin-8 (IL-8), interleukin-17 (IL-17), and anti-hMPV IgG were measured by ELISA, while fasting blood glucose (FBG), urea, and creatinine were quantified using automated biochemical assays. Group differences were assessed with independent t-tests and chi-square tests, and Pearson’s correlation examined relationships among parameters.
Results: Patients showed significantly higher FBG (6.54 vs. 5.50 mmol/L), urea (7.34 vs. 4.63 mmol/L), and hMPV IgG (5.22 vs. 3.69 IU/L) than controls (all P < 0.05), while IL-17 was significantly lower (142.6 vs. 151.4 pg/mL, P < 0.05); IL-8 and creatinine did not differ. Urea correlated positively with age (r = 0.209) and hMPV IgG (r = 0.198), and negatively with IL-17 (r = -0.201; all P < 0.05). Smoking was markedly more common among patients (80.0% vs. 15.0%, P < 0.001).
Conclusion: hMPV infection appears to coincide with a transient hyperglycemic, pro-catabolic state alongside suppressed IL-17 signaling, a pattern that may carry implications for Type 2 diabetes risk in susceptible individuals. These preliminary associations support longitudinal follow-up to clarify causality and clinical relevance.
Keywords: Human metapneumovirus; Interleukin-17; Interleukin-8; Stress hyperglycemia; Type 2 diabetes risk
References
Acharya, D., Wang, P., & Bhatt, L. (2010). Interleukin-17 deficiency exacerbates West Nile virus infection by impairing viral clearance. Journal of Virology, 84(22), 11589-11598.
Alvarez, R., & Tripp, R. A. (2005). The contribution of biologically relevant chemokines to respiratory syncytial virus pathogenesis. Viral Immunology, 18(3), 405-413.
Biacchesi, S., Skiadopoulos, M. H., Yang, L., Lamirande, E. W., Tran, K. C., Murphy, B. R., Collins, P. L., & Buchholz, U. J. (2004). Recombinant human metapneumovirus lacking the small hydrophobic SH and/or attachment G glycoprotein: deficiencies in growth and immunogenicity. Virology, 321(2), 247-259.
Boivin, G., Mackay, I., Sloots, T. P., Madhi, S., Freymuth, F., Wolf, D., Shemer-Avni, Y., Ludewick, H., Gray, G. C., & LeBlanc, E. (2004). Global genetic diversity of human metapneumovirus fusion gene. Emerging Infectious Diseases, 10(6), 1154-1157.
Burtis, C. A., Ashwood, E. R., Bruns, D. E., & Tietz, N. W. (2014). Tietz textbook of clinical chemistry and molecular diagnostics (5th ed.). Elsevier.
Busse, W. W., Lemanske, R. F., Jr., & Gern, J. E. (2010). Role of viral respiratory infections in asthma and asthma exacerbations. The Lancet, 376(9743), 826-834.
Chittiprol, N., Kandi, V., Pinnelli, V. B. K., Suvvari, T. K., Madamsetti, N., Ca, J., & Challa, S. (2025). The re-emergence of human metapneumovirus: a review of epidemiology, clinical features, and public health implications. Cureus, 17(3), e85259. https://doi.org/10.7759/cureus.85259
Dickson, R. P., Erb-Downward, J. R., Martinez, F. J., & Huffnagle, G. B. (2016). The microbiome and the respiratory tract. Annual Review of Physiology, 78, 481-504.
Falsey, A. R., Erdman, D., Anderson, L. J., & Walsh, E. E. (2003). Human metapneumovirus infections in young and elderly adults. The Journal of Infectious Diseases, 187(5), 785-790.
Filho, R. C. C., Saddy, F., Costa, J. L. F., & Tavares, L. R. (2025). Severe pneumonia caused by human metapneumovirus in an adult patient: a case report. Microorganisms, 13(1), 73. https://doi.org/10.3390/microorganisms13010073
Guerrero-Plata, A., Casola, A., & Garofalo, R. P. (2005). Human metapneumovirus induces a distinct cytokine response in human bronchial epithelial cells compared to respiratory syncytial virus. Journal of Virology, 79(23), 14992-14997. https://doi.org/10.1128/JVI.79.23.14992-14997.2005
Hotamisligil, G. S. (2006). Inflammation and metabolic disorders. Nature, 444(7121), 860-867.
Huck, B., Neumann-Haefelin, D., Schmitt-Graef, A., Weckmann, M., Mattes, J., Ehl, S., & Falcone, V. (2007). Human metapneumovirus induces more severe disease and stronger innate immune response in BALB/c mice as compared with respiratory syncytial virus. Respiratory Research, 8(1), 6.
Jamal, A., Katz, M. A., Auko, E., Njenga, M. K., Weinberg, M., Kapella, B. K., Burke, H., Nyoka, R., Gichangi, A., Waiboci, L. W., Mahamud, A., Qassim, M., Swai, B., Wagacha, B., Mutonga, D., Nguhi, M., Breiman, R. F., & Eidex, R. B. (2012). Epidemiology of respiratory viral infections in two long-term refugee camps in Kenya, 2007-2010. BMC Infectious Diseases, 12, 7.
Kolli, D., Bataki, E. L., Spetch, L., Guerrero-Plata, A., Jewell, A. M., Piedra, P. A., Milligan, G. N., Garofalo, R. P., & Casola, A. (2008). T lymphocytes contribute to antiviral immunity and pathogenesis in experimental human metapneumovirus infection. Journal of Virology, 82(17), 8560-8569.
Korn, T., Bettelli, E., Oukka, M., & Kuchroo, V. K. (2009). IL-17 and Th17 cells. Annual Review of Immunology, 27, 485-517. https://doi.org/10.1146/annurev.immunol.021908.132710
Lawrence, S. M., Ruoss, J. L., & Wynn, J. L. (2017). IL-17 in neonatal health and disease. American Journal of Reproductive Immunology, 79(3), e12624.
Ma, W., Yao, X., Peng, Q., & Chen, D. (2019). The protective and pathogenic roles of IL-17 in viral infections: friend or foe? Open Biology, 9(7), 190109.
Mahony, J. B. (2008). Detection of respiratory viruses by molecular methods. Clinical Microbiology Reviews, 21(4), 716-747. https://doi.org/10.1128/CMR.00037-07
Medoff, B. D., Seung, E., Hong, S., Thomas, S. Y., Sandall, B. P., Duffield, J. S., Kuperman, D. A., Erle, D. J., & Luster, A. D. (2009). CD11b+ myeloid cells are the key mediators of Th2 cell homing into the airway in allergic inflammation. Journal of Immunology, 182(1), 623-635.
Park, J., Kim, Y., Kwon, E., Callaway, Z., Fujisawa, T., & Kim, C. (2017). Comparison of nasal cytokine profiles of human metapneumovirus and respiratory syncytial virus. Asia Pacific Allergy, 7(4), 206-213. https://doi.org/10.5415/apallergy.2017.7.4.206
Ruuskanen, O., Lahti, E., Jennings, L. C., & Murdoch, D. R. (2011). Viral pneumonia. The Lancet, 377(9773), 1264-1275.
Simoes, E., Cherian, T., Chow, J., Shahid-Salles, S., Laxminarayan, R., John, T. J., Jamison, D. T., Breman, J. G., Measham, A. R., Alleyne, G., Claeson, M., Evans, D. B., Jha, P., Mills, A., & Musgrove, P. (2006). Acute respiratory infections in children. In D. T. Jamison et al. (Eds.), Disease control priorities in developing countries (2nd ed., pp. 483-497). World Bank.
Sumino, K. C., Agapov, E., Pierce, R. A., Trulock, E. P., Pfeifer, J. D., Ritter, J. H., Gaudreault-Keener, M., Storch, G. A., & Holtzman, M. J. (2005). Detection of severe human metapneumovirus infection by real-time polymerase chain reaction and histopathological assessment. The Journal of Infectious Diseases, 192(10), 1052-1060.
Widmer, K., Zhu, Y., Williams, J. V., Griffin, M. R., Edwards, K. M., & Talbot, H. K. (2021). Rates of hospitalizations for respiratory syncytial virus, human metapneumovirus, and influenza virus in older adults. The Journal of Infectious Diseases, 206(1), 56-62. https://doi.org/10.1093/infdis/jis309
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