A decreased level of IL-33 and an elevated concentration of MMP-28 were found in CHD patients and correlated with disease severity. IL-33 and MMP-28 may play important roles in the development of CHD or as markers of disease severity.

Purpose: The purpose of this study was to investigate the levels of interleukin-33 (IL-33) and interleukin-6 (IL-6) in patients with acute coronary syndrome or stable angina. Methods: Serum IL-33 and IL-6 were measured with Enzyme Linked Immuosorbent Assay (ELISA) in patients with acute coronary syndrome (ACS, n = 40), and stable angina pectoris (SAP, n = 43). IL-33 and IL-6 were also determined in 30 healthy subjects (control group). Results: The serum level of IL-33 in the ACS group (78.60 ± 44.84 ng/L) was lower than in the SAP (102.58 ± 37.21 ng/L, P < 0.01) or control groups (130.24 ± 10.17 ng/L, P < 0.01). The serum level of IL-6 in the ACS group (39.90 ± 12.64 ng/L) was higher than in the SAP (18.68 ± 11.89 ng/L, P < 0.05) or control groups (6.28 ± 17.72 ng/L, P < 0.05). There were no differences in serum levels of IL-33 and IL-6 among the single-, double- and triple-vessel lesion groups. IL-33 and IL-6 levels were negatively correlated with each other in the ACS (r = -0.871, P < 0.01) and SAP groups (r = -0.788, P < 0.01). Conclusion: The serum level of IL-33 was lower in patients with ACS or SAP and was negatively correlated with the serum level of IL-6. Thus, IL-33 and IL-6 may be used as biomarkers for evaluating inflammatory response and severity of coronary heart disease in patients with ACS or SAP.

BackgroundLumbar disc herniation (LDH) is a common condition leading to high individual, social, and economic impacts. Reported rates of spontaneous resorption of LDH vary from 35% to 100%; however, it remains unclear how spontaneous absorption, rather than re-protrusion, can be maximized.Purpose The main objective of this study was to determine the characteristics and factors enabling for spontaneous regression of extruded LDH. DesignA retrospective single center case series. Patient sampleInpatients (n = 33) with LDH who experienced spontaneous regression between September 2015 and June 2020. Outcome measuresQuestionnaire responses and magnetic resonance imaging (MRI)-determined hernia regression.MethodsA questionnaire was distributed to patients to assess factors associated with hernia resorption, the volume of herniated intervertebral discs evaluated by MRI, and the absorption ratio calculated. Multiple linear regression was used to explore factors enabling spontaneous herniated disc regression. ResultsA total of 31 patients received a mean of 5.90 conservative treatments during hospitalization, and 1.91 during rehabilitation. Of patients, 90.32% underwent bed-rest during the acute phase of the disease, and 61.29% did so during rehabilitation. Rehabilitation exercise was undertaken by 93.55% of patients, with a mean of 2.42 exercise methods per patient. Waist lumbosacral orthosis devices were worn by 80.65% of patients. Multiple linear regression showed that bed-rest days in the acute phase (X1), herniation type (X2), time wearing lumbosacral orthosis (X3), onset-treatment duration (X4), and days of bed-rest days in rehabilitation (X5) had significant effects on the spontaneous regression ratio (y) of herniated discs (all P < 0.05). The optimal linear regression equation was y = 0.616 + 0.497X1 – 0.478X2 + 0.384X3 – 0.343X4 – 0.241X5. Conclusions Our findings support that patients with extruded or sequestered LDH should receive comprehensive treatment. Early treatment, early bed-rest, and lumbosacral orthosis protection promote the spontaneous regression of herniated discs; however, bed-rest during rehabilitation is a poor prognostic factor. Adherence to rehabilitation exercise will be beneficial to the recovery of patients with LDH.