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Objective To investigate the effect of varying blood pressure stratification on renal function in the diabetic population. Methods A prospective cohort study was conducted, enrolling 9 489 diabetic patients from a total of 101 510 Kailuan Group employees who underwent health examinations between July 2006 and October 2007. The follow-up period was (8.6±4.0) years. Participants were categorized into four groups based on their baseline blood pressure levels: normal blood pressure (systolic blood pressure <120 mmHg and diastolic blood pressure <80 mmHg), elevated blood pressure (systolic blood pressure 120-130 mmHg and diastolic blood pressure <80 mmHg), stage 1 hypertension (systolic blood pressure 130-140 mmHg and/or diastolic blood pressure 80-90 mmHg), and stage 2 hypertension (systolic blood pressure ≥140 mmHg and/or diastolic blood pressure ≥90 mmHg). The incidence density of chronic kidney disease (CKD) was compared among these groups. A multivariate Cox proportional hazards regression model was employed to assess the effects of different blood pressure levels on renal function in diabetic patients, with the stability of the results confirmed using a multivariate time-dependent Cox proportional hazards model. Sensitivity analysis was conducted after excluding cases of cardiovascular disease (CVD) during follow-up, and cases using antihypertensive and antidiabetic medications at baseline. Results (1) At baseline, stage 1 hypertension patients demonstrated statistically significant higher differences with age and body mass index (BMI) compared to normal blood pressure group (P<0.05). (2) By the end of the follow-up, 2 294 cases of CKD were identified, including 1 117 cases of estimated glomerular filtration rate (eGFR) decline and 1 575 cases of urinary protein. The incidences density of CKD, eGFR decline and urinary protein for stage 1 hypertension group were 39.4, 16.3 and 25.5 per thousand person-years, respectively, all of which were statistically significant different from normal blood pressure group (log-rank test, P<0.01). (3) Multivariate Cox regression analysis revealed that, compared to the normal blood pressure group, stage 1 hypertension was associated with a 29% increased risk of CKD (HR=1.29, 95%CI 1.09-1.52) and a 40% increased risk of eGFR decline (HR=1.40, 95%CI 1.08-1.80) in diabetic individuals. Conclusion Stage 1 hypertension significantly increases the risk of CKD and eGFR decline in diabetic individuals, with a particularly notable effect on the risk of eGFR decline.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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