Cardiovascular Journal of Africa: Vol 33 No 6 (NOVEMBER/DECEMBER 2022)

CARDIOVASCULAR JOURNAL OF AFRICA • Volume 33, No 6, November/December 2022 320 AFRICA in 55 (25.6%) hypertensive patients. It was reported that the patients with increased CIMT were older and had higher neutrophil counts (p < 0.001), NLR (p < 0.001) and SII (p < 0.001).17 Moreover, they found that SII (odds ratio, OR: 3.906; p < 0.001) was an independent predictor of increased CIMT in multivariable logistic regression analysis. In our study, we concluded that SII was higher in newly diagnosed, treatmentnaïve, hypertensive women than in men. Women have higher circulating inflammatory cytokines and expression of pro-inflammatory genes, including C-reactive protein. Gender-based differences in myocardial gene expression revealed that many of the differentially expressed genes are involved in inflammation and cardiac remodelling.23 Furthermore, Tatsukawa et al. observed that increased neutrophil count was significantly related to incidence of hypertension in Japanese women.13 In our study, SII was higher in women with newly diagnosed hypertension than in men. Traditional cardiovascular risk factors are useful for predicting incident events in the younger population, however, their predictive value decreases with age.24 It is possible that the absence of inflammatory markers from these models decreases their predictive accuracy in older age groups. It suggests that a more substantial role of low-grade inflammation has cardiovascular disease pathogenesis in older adults than in younger adults. In observational studies of older adults, inflammatory markers are consistently and independently associated with cardiovascular disease.25 The age-associated decline in steroid hormone levels may also contribute to the elevation of pro-inflammatory markers. In vitro studies suggest that IL-6 gene transcription is repressed by oestrogen and androgen,26,27 and that these hormones inhibit the secretion of IL-6.28 In our study, it was found there was a positive correlation between SII and age in newly diagnosed, hypertensive women. The increased propensity of platelets to aggregation was determined in hypertensive patients. This situation is induced by adenosine diphosphate, and the presence of different morphological forms, especially the pseudopod formation of platelets, suggests activation of these blood cells.29 L-arginine uptake and platelet nitric oxide generation are impaired in hypertensive patients.30 In a study, it was demonstrated that platelet activation increased more in non-dipping hypertensive patients than in dipping hypertensive patients.31 Saylık et al. observed in their study that platelet counts and PLR were significantly higher in exaggerated morning blood pressure surges.22 In our study, platelet counts and PLR were significantly higher in newly diagnosed, hypertensive women. There are some limitations of this study. The first was that the study included only newly diagnosed and treatment-naïve hypertensive patients. Therefore, the effect of treatment could not be evaluated. Furthermore, our study cannot be generalised to all hypertensive patients because patients on antihypertensive medication were excluded from the study. The study was retrospective and the number of patients was small. Complete information about smoking status could not be obtained from the anamnesis of the patients. Conclusion This study showed that SII levels were higher in newly diagnosed, untreated, hypertensive women than in men. SII was correlated with age in this population. Inflammation is responsible for most of the unexpected complications of arterial hypertension. In addition, it can be concluded that complications related to hypertension may increase with increasing age in women due to inflammation. From these results, we recommend the use of the SII in cardiovascular diseases to increase survival in hypertensive women. References 1. Zhou B, Bentham J, Di Cesare M, Bixby H, Danaei G, Cowanet MJ, et al. Worldwide trends in blood pressure from 1975 to 2015: a pooled analysis of 1479 population-based measurement studies with 19.1 million participants. Lancet 2017; 389: 37–55 2. Chow CK, Teo KK, Rangarajan S, Islam S, Gupta R, Avezum A, et al. Prevalence, awareness, treatment, and control of hypertension in rural and urban communities in high-, middle-, and low-income countries. J Am Med Assoc 2013; 310: 959–968. 3. Forouzanfar MH, Liu P, Roth GA, Ng M, Biryukov S, Marczak L, et al. Global burden of hypertension and systolic blood pressure of at least 110 to 115 mmHg, 1990–2015. J Am Med Assoc 2017; 317: 165–182. 4. Lewington S, Clarke R, Qizilbash N, Peto R, Collins R, Prospective Studies Collaboration, et al. Age-specific relevance of usual blood pressure to vascular mortality: a meta-analysis of individual data for one million adults in 61 prospective studies. Lancet 2002; 360: 1903–1913. 5. Lip GYH, Coca A, Kahan T, Boriani G, Manoli AS, Olsen MH, et al. Hypertension and cardiac arrhythmias: executive summary of a consensus document from the European Heart Rhythm Association (EHRA) and ESC Council on Hypertension, endorsed by the Heart Rhythm Society (HRS), Asia-Pacific Heart Rhythm Society (APHRS), and Sociedad Latinoamericana de Estimulacion Cardiaca y Electrofisiologia (SOLACE). Eur Heart J Cardiovasc Pharmacother 2017; 3: 235–250. 6. Hu B, Yang XR, Xu Y, Sun FY , Sun, Guo F, et al. Systemic immuneinflammation index predicts prognosis of patients after curative resection for hepatocellular carcinoma. Clin Cancer Res 2014; 20: 6212–6222. 7. Yang YL, Wu CH, Hsu PF, Chen SC, Huang SS, Chan WL, et al. Systemic immune-inflammation index (SII) predicted clinical outcome in patients with coronary artery disease. Eur J Clin Invest 2020; 50: e13230. 8. Coppo M, Bandinelli M, Berni A, Galastri S, Abbate R, Poggesi L, et al. Ang II upregulation of the T-lymphocyte renin–angiotensin system is amplified by lowgrade inflammation in human hypertension. Am J Hypertens 2011; 24:716–723. 9. Shankar A, Klein BEK, Klein R. Relationship between white blood cell count and incident hypertension. Am J Hypertens 2014; 17: 233–239. 10. Bermudez EA, Rifai N, Buring J, Manson JE, Ridker PM. Interrelationships among circulating interleukin-6, C-reactive protein, and traditional cardiovascular risk factors in women. Arterioscler Thromb Vasc Biol 2002; 22: 1668–1673. 11. Kim KI, Lee JH, Chang HJ, Cho YS, Youn TJ, Chıng WY, et al. Association between blood pressure variability and inflammatory marker in hypertensive patients. Cir J 2008; 72: 293–298. 12. Schmid-Schönbein GW, Seiffge D, Delano FA, Shen K, Zweifach BW. Leukocyte counts and activation in spontaneously hypertensive and normotensive rats. Hypertension 1991; 17: 323–330. 13. Tatsukawa Y, Hsu WL, Yamada M, Cologne JB, Suzuki G, Yamamoto H, et al. White blood cell count, especially neutrophil count, as a predictor of hypertension in a Japanese population. Hypertens Res 2008; 31: 1391–1397.

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