The obesity paradox in ST-segment elevation myocardial infarction patients: A meta-analysis.

OBJECTIVE: The aim of this study was to investigate whether there was a difference in survival after initial percutaneous coronary intervention (PCI) among ST-segment elevation myocardial infarction (STEMI) patients with different body mass index (BMI). METHODS: Literature retrieval was conducted on PubMed, Web of Science, Embase, CNKI, and Wanfang databases to obtain the published studies on the survival of STEMI patients with different BMI after initial PCI from the establishment of the database to 2022. All statistical analyses were performed using STATA16.0. RESULTS: Two hundred thirty-nine studies were retrieved, and 12 studies were eventually included. Meta-analysis showed that overweight patients [OR = 0.66, 95% CI (0.58, 0.76), p < .001] and obese patients [OR = 0.60, 95% CI (0.51, 0.72), p < .001] had lower in-hospital mortality than healthy-weight patients. Overweight patients [OR = 0.66, 95% CI (0.58, 0.74), p < .001] and obese patients [OR = 0.62, 95% CI (0.53, 0.72), p < .001] had lower short-term mortality than healthy-weight patients. In addition, overweight patients [OR = 0.63, 95% CI (0.58, 0.69), p < .001] and obese patients [OR = 0.59, 95% CI (0.52, 0.66), p < .001] also had lower long-term mortality than healthy-weight patients. There was no significant difference in in-hospital mortality [OR = 1.06, 95% CI (0.89, 1.27), p > .05], short-term mortality [OR = 1.04, 95% CI (0.89, 1.22), p > .05], and long-term mortality [OR = 1.07, 95% CI (0.95, 1.20), p > .05] between overweight and obese patients. CONCLUSION: This meta-analysis confirmed an obesity paradox in STEMI patients following PCI. The obesity paradox exists in in-hospital, short-term, and long-term conditions.

Relationship Between Hematocrit Level and Cardiovascular Risk Factors in a Community-Based Population.

BACKGROUND: This study aimed to determine the relationship between hematocrit (HCT) levels and cardiovascular risk factors in a community-based population of middle-aged adults. METHODS: From April 2011 to February 2012, a total of 1,884 middle-aged adults were selected from a community-based population in China. Blood and urine samples were collected for routine blood and urine tests, and measurement of plasma glucose and lipid levels. Baseline information including traditional cardiovascular risk factors was obtained by standard questionnaire to analyze. We evaluated the distribution of the HCT values for middle-aged adults with or without cardiovascular risk factors. There were 548 males and 1,336 females in this study. The mean age of all subjects was 54.7 ± 6.7 years. There were 1,209 subjects with risk factors and 675 without risk factors. RESULTS: The HCT levels in subjects with risk factors were higher than those without risk factors (P = 0.005). According to a simplified tool for evaluation of the 10-year risk of ischemic cardiovascular diseases (CVDs) in Chinese populations, all subjects were divided into four groups: the ultralow-risk group (1,367, 72.6%), low-risk group (232, 12.3%), intermediate-risk group (201, 10.7%), and high-risk/ultrahigh-risk group (84, 4.4%). Compared with HCT levels in the ultralow-risk group, significant differences were found in the low-risk, intermediate-risk, and high-risk/ultrahigh-risk groups (all P < 0.05). CONCLUSION: Our results indicate that elevated HCT levels may be positively associated with cardiovascular risk factors. Thus, the combination of HCT values and cardiovascular risk factors may enable early diagnosis of CVDs.

Exopolysaccharide from Paecilomyces lilacinus modulates macrophage activities through the TLR4/NF­κB/MAPK pathway.

Multiple exopolysaccharides (EPSs) have been isolated from various organisms in extreme environments and have yielded a variety of activities. The present study evaluated the immunomodulatory capabilities of an EPS (termed PH­EPS) derived from the fungus Paecilomyces lilacinus PH0016, which was isolated from a tropical and hyperhaline environment in southern China. The macrophage RAW 264.7 cell line was used to investigate the mechanism of PH­EPS­induced macrophage activation. The results indicated that RAW 264.7 macrophages were activated by PH­EPS, in an effect slightly inferior to lipopolysaccharide (LPS), as evidenced by secretion of interleukin (IL)­1ß, tumor necrosis factor (TNF)­α and nitric oxide (NO), and by significantly increased phagocytosis in the cells treated with PH­EPS. Nuclear factor (NF)­κB p65 was significantly translocated into the nucleus in the PH­EPS­treated cells. In addition, expression of inducible NO synthase (iNOS) and IκB­α degradation were enhanced in PH­EPS­treated cells. The phosphorylation levels of p38, JNK and ERK were also significantly increased in the PH­EPS­treated cells. Furthermore, IL­1ß and TNF­α production was markedly decreased in PH­EPS­treated cells when the mitogen­activated protein kinase (MAPK) pathways were blocked by the inhibitor Dectin­1 and by antibodies against Toll­like receptor 4 (TLR4). The present results indicated that PH­EPS from Paecilomyces lilacinus possessed the capability of activating RAW 264.7 cells via the TLR4/NF­κB/MAPKs signaling pathway.

[Investigation on species composition of cockroaches and bacteria-carrying on their bodies in five cities of Hainan].

"ZA-type" cages were used to capture cockroaches in 267 sites of 5 cities in Hainan. Species were identified and bacteria were isolated by routine method. 441 cockroaches were collected and identified as five species belonging to two genera, 75.3% being Periplaneta americana. More cockroaches were found in sewerage. Bacteria were detected from 82.4% of cockroaches, including Escherichia coli, Pseudomonas aeruginosa, Salmonella sp, Staphylococcus aureus, Shigella sp, Bacillus proteus and sort of mycetes. Therefore, the dominant species is Periplaneta americana in Hainan, and the high bacteria-carrying behavior of cockroaches indicates its importance in disease transmission.