Abstract:
BACKGROUND:Smoking and body mass index (BMI) are the key risk factors for chronic obstructive pulmonary disease (COPD). Adiponectin with both anti-inflammatory and pro-inflammatory properties is a vital modulator of inflammatory processes, which is expressed in epithelial cells in the airway in COPD-emphysema. The aim of this study was to examine the effects of adiponectin on tobacco smoke-induced emphysema in rats, which were fed different diets. METHODS:Seventy-six adult (6-8 weeks old) male Sprague-Dawley rats (average weight 220 ± 20 g) were exposed to smoke or smoke-free room atmosphere and fed different diets (regular, high-fat, or low-fat diets) for 6 months. The rats were randomly divided into six groups. They are nonsmoke-exposed regular diet (n = 10), nonsmoke-exposed high-fat diet (n = 14), nonsmoke-exposed low-fat diet (n = 14), smoke-exposed regular diet (n = 10), smoke-exposed high-fat diet (n = 14), and smoke-exposed low-fat diet groups (n = 14). A full 2 3 factorial design was used to evaluate the effect of independent variables on smoke exposure and different rearing methods. Serum adiponectin and inflammatory cytokines were measured by the enzyme-linked immunosorbent assay (ELISA). RESULTS:Serum adiponectin levels in rats fed low-fat and regular diets exposed to smoke exposure were remarkably higher than that of rats exposed to room air while serum adiponectin levels of fat-rich diet rats exposed to tobacco smoke were lower than that of rats exposed to room air. Compared with regular diet or low-fat diet group, serum adiponectin levels in high-fat diet rats exposed to tobacco smoke were lower (t = 6.932, 11.026; all P < 0.001). BMI was inversely correlated with serum adiponectin levels (r = -0.751, P = 0.012). Serum interleukin 6 (IL-6), tumor necrosis factor-α (TNF-α), and 4-hydroxy 2-nonenal (HNE) levels in rats exposed to low-fat or fat-rich diets were remarkably higher than that of rats exposed to normal diets (IL-6, t = 4.196, 3.480; P < 0.01, P = 0.001; TNF-α, t = 4.286, 3.521; P < 0.01, P = 0.001; 4-HNE, t = 4.298, 4.316; all P < 0.001). In nonhigh-fat diet rats exposed to tobacco smoke, serum adiponectin levels correlated positively with serum IL-6, TNF-α, and 4-HNE, bronchoalveolar lavage cell count, and mean linear intercept. In contrast, in high-fat diet rats, serum adiponectin levels correlated inversely with these parameters. CONCLUSIONS:In smoke-induced emphysema and fat-rich diet rat model, serum adiponectin level was decreased, and the anti-inflammatory effect was attenuated. By contrast, nonhigh-fat diet elevated serum adiponectin and enhanced the role of pro-inflammatory.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Wang RY,Liu H,Ma LJ,Xu JYdoi
10.4103/0366-6999.173486subject
Has Abstractpub_date
2016-01-20 00:00:00pages
187-93issue
2eissn
0366-6999issn
2542-5641pii
ChinMedJ_2016_129_2_187_173486journal_volume
129pub_type
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.181965
更新日期:2016-05-20 00:00:00
abstract:BACKGROUND:For patients with severe endometriosis, the spontaneous pregnancy rates have been reported to be near 0 due to extreme distortion of normal pelvic anatomy. Surgery is one of the treatment options; however, if patients failed to conceive after surgery, in vitro fertilization (IVF) is effective. The objective ...
journal_title:Chinese medical journal
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abstract:BACKGROUND:The research of cancer in patients on hemodialysis (HD) in China has not been reported. The aim of this study was to investigate the clinical and histological features and outcomes of cancer in Chinese HD patients. METHODS:The study subjects were 49 cancer patients (1.4%) out of 3448 end stage renal disease...
journal_title:Chinese medical journal
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更新日期:2012-12-01 00:00:00
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journal_title:Chinese medical journal
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journal_title:Chinese medical journal
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doi:
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-07-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-02-01 00:00:00
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journal_title:Chinese medical journal
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1998-12-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
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journal_title:Chinese medical journal
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doi:
更新日期:1991-06-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1999-09-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1996-10-01 00:00:00
abstract:BACKGROUND:There are no clear guidelines on implant removal. Few have assessed the long-term outcomes of patients with implants left in-situ, or removed. Therefore, removal of implants after fracture fixation remains controversial. METHODS:In this retrospective study, we reviewed 53 patients with implant for fracture ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-08-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2001-04-01 00:00:00
abstract:BACKGROUND:Estrogen receptor (ER)-negative breast cancer cells are more aggressive than ER-positive cells. Elevated levels of cyclooxygenase-2 (COX-2) and vascular endothelial growth factor-C (VEGF-C) expression have been detected in cultured human breast cancer cells and are associated with negative hormone receptor s...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-08-05 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2014-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 临床试验,杂志文章
doi:
更新日期:2001-09-01 00:00:00
abstract:BACKGROUND:Sericin peptide (SP) has shown a powerful anti-oxidant property in a host of studies. The present study was designed to investigate the possible protective effects of SP against alcohol-induced gastric lesions in mice and to explore the potential mechanisms. METHODS:Animals were randomly divided into 5 grou...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-10-20 00:00:00
abstract:BACKGROUND:Tenofovir disoproxil (TDF) is a promising salvage therapy for patients with chronic hepatitis B (CHB) who failed regimens of other nucleoside analogues (NAs). In this study, we aimed to investigate the clinical efficacy and safety of TDF monotherapy in Chinese CHB patients with genotypic resistance. METHODS...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.204107
更新日期:2017-04-20 00:00:00
abstract::The association of gluckinase (GCK) gene with type 2 (non-insulin-dependent) diabetes mellitus was investigated in 168 Chinese subjects (85 unrelated type 2 diabetics and 83 non-diabetic controls). The microsatellite polymorphism marker, GCK-5', was amplified with polymerase chain reaction. Four alleles were observed ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-12-01 00:00:00
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pub_type: 杂志文章
doi:
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doi:10.4103/0366-6999.162510
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-04-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.149194
更新日期:2015-01-20 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
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