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Objective: To study the effects of percutaneous coronary intervention (PCI) on blood levels of vascular endothelial growth factor (VEGF), high sensitivity C-reaction protein (hs-CRP) and fibrinogen (Fg) in patients with acute myocardial infarction (AMI). Methods: Our research included 2 groups: AMI group,n=110 patients with PCI and Control group,n=53 healthy subjects from physical examination. Blood levels of VEGF, hs-CRP and Fg were compared between pre-operation and 30 min, 24 h, 72 h post-operation; the peak values of VEGF, hs-CRP and Fg were compared between the patients with post-operative MACE occurrence at 24 h and the patients without MACE occurrence. Results:①Compared with Control group, blood levels of VEGF, hs-CRP and Fg in AMI group were increased at pre-operation and 30 min, 24 h, 72 h post-operation, for VEGF (pg/ml) as (84.7±21.4) vs (130.5±40.2) and (143.2±49.7), (107.1±31.8), (97.3±24.4); for hs-CRP (mg/L) as (1.03±0.34) vs (3.11±0.56) and (4.67±0.62), (6.42±0.72), (2.83±0.56); for Fg (mg/L) as (3.86±0.32) vs (4.79±0.52) and (5.02±0.54), (5.54±0.67), (4.11±0.44) respectively, allP Conclusion: Post-operative monitoring of blood levels of VEGF, hs-CRP and Fg had the important clinical value in AMI patients after PCI.
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Objective To evaluate the effects of repetitive noxious stimuli during the neonatal period on the pain sensitivity during adulthood in rats.Methods Twenty pathogen-free male neonatal SpragueDawley rats,weighing 6.2-6.8 g,were randomly divided into 2 groups (n=10 each) using a random number table:control group (group C) and repetitive noxious stimuli group (group RNS).In RNS group,neonatal rats sequentially received needle pricks into the dorsal surface of 4 paws at 6 h intervals with a 28 G needle per day during the first postnatal week.In group C,the animals received non-painful tactile stimuli with cotton tip rub.At the age of 10 weeks,complete Freund' s adjuvant was injected into the plantar surface of the right hind paw to induce inflammatory pain.Before injection,and at 24 h and 7 days after injection (T0-2),the mechanical and thermal thresholds were measured,and alcohol preference test was performed for assessment of the behavior at T2.Results The mechanical threshold of the right paws was significantly lower at T1.2 than that of the left paws in the two groups.Compared to group C,the mechanical threshold of the left and right paws at T0-2 and thermal threshold of the right paws at T1 were significantly decreased,and alcohol intake was increased in group RNS.Conclusion Repetitive noxious stimuli during the neonatal period can lead to increase in the pain sensitivity during adulthood in rats.
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Objective To investigate the effect of neonatal overfeeding on the expression of lipid metabolic associated enzymes and molecular mechanisms in the livers of rats. Methods Male Sprague-Dawley rats were randomly assigned to litter sizes of three group ( small litters,SL group) or ten ( normal litters,NL group) on postnatal day 3. Body weight,milk intake,liver and fat pad (epididymal and retroperitonea) weight,and hepatic histological anal-ysis were recorded in week 2 and week 3,respectively. The levels of lipids were detected by the automatic biochemical analyzer. The mRNA expressions of acetyl-CoA carboxylase ( ACC) ,lipoprotein lipase ( LPL) ,liver-type fatty acid-binding protein (L-FABP), carnitine palmitoyltransferase 1(CPT1),microsomal triglyceride transfer protein (MTP), sterol regulatory element-binding protein-1c (SREBP-1c) and peroxisome proliferator activated receptorα(PPARα) in liver were determined by real time PCR;the protein expressions of SREBP-1c and PPARα were determined by Western lot. Results As early as week 2,the body weight of rats in SL group began to elevate (t=-5. 997,P<0. 001) and food intake (t=-3. 462,P=0. 002) compared with the rats in NL group,and persistent to weaning (body weight:t=-17. 019,P<0. 001;food intake:t=-2. 276,P=0. 031). By the time of 3 weeks old,SL rats increased visceral fat pad [ret-roperitonea (t=-7. 643,P<0. 001),epididymal (t=5. 997,P=0. 001)],liver weight (t=-7. 812,P<0. 001),hepatosomatic index (t=-3.829,P=0. 003) and serum triglyceride (TG) level (t=-2. 703,P=0. 022) compared with those of NL rats,as well as the level of hepatic ACC mRNA (t=-3. 751,P=0. 007),LPL (t=-2. 721,P=0. 017) and L-FABP mRNA (t=-2. 521,P=0. 026) . While CPT1 mRNA (t=-1. 531,P=0. 155) and MTP mRNA (t=-1. 741,P=0. 098) levels remained unchanged in both groups. Hepatic SREBP-1c mRNA expression increased in SL rats after 2 to 3 weeks (t=-2. 836,P=0. 016),paralleled with ACC and LPL mRNA expression;while the mRNA and protein expression of PPARα re-mained unchanged (t=-0. 854,P=0. 411). Conclusions Postnatal overfeeding can promote higher liver pad and dyslip-idemia at the time of weaning. The process may be regulated by up-regulated expression of ACC, LPL and L-FABP. SREBP-1c may be participated in the regulation of ACC,a rate-limiting enzyme involved in lipogenesis.
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Objective To study the effects of postnatal overfeeding and high-fat diet on blood pressure of rats,and to explore the pathophysiological mechanism underlying hypertension induced by continuous early postnatal overfeeding.Methods Male Sprague-Dawley rats were randomly divided into normal feeding group (10/litter) and overfeeding group (3/litter) on postnatal day 3 with a random number table.After weaning at postnatal week 3,the rats were randomly given standard chow or high-fat (HF) diet until week 16.Hence four groups were analyzed,namely normal feeding group,breastfed overfeeding group,post-weaning overfeeding group,and continuous overfeeding group.Body weight was continuously monitored in each week.Visceral fat pad (retroperitoneal and perigenital),systolic pressure,and heart rate were observed at week 3 and week 16.Thoracic aorta was sampled for measurement of vascular endothelial dilation function.Histological morphology was observed with HE staining,nitric oxide content of thoracic aorta was detected with nitrate reductase method.The mRNA expression of endothelial nitric oxide synthase (eNOS) in thoracic aorta was determined by real-time polymerase chain reaction.The protein expressions of eNOS and phosphorylated eNOS were determined by Western blot.Results At week 3,breastfed overfeeding rats displayed significantly larger body weight [(77.80 ± 0.57) g vs.(62.80 ±0.85) g,t =14.576,P ＜ 0.01] and visceral fat [retroperitoneal:(8.19 ± 0.49) mg/g vs.(4.92 ± 0.31) mg/g,t =5.629,P＜0.01;perigenital:(3.50 ±0.29) mg/g vs.(2.08 ±0.13) mg/g,t =4.552,P ＜0.01] compared with normal feedindg rats,and the protein expression of phosphorylated eNOS in aortic tissues was significantly reduced to week 16 (F =15.215,P ＜0.01);high-fat diet feeding after weaning further increased the body weight and fat mass in breastfed overfeeding rats.At week 16,continuous overfeeding rats showed hypertension [(149 ± 1.94) mmHg (1 mmHg =0.133 kPa),F =22.834,P ＜0.01],impaired vascular endothelial dilation function (F =7.648,P ＜ 0.05),and reduced protein expression of phosphorylated eNOS (F =15.215,P ＜ 0.01),while the post-weaning overfeeding group only had elevated blood pressure.Conclusions Overfeeding in breastfeeding period and high-fat diet after weaning leads to hypertension.The continuous decrease in phosphorylated eNOS in vascular tissues may be an important molecular process participating in the occurrence of vascular endothelial dysfunction in adults induced by postnatal overfeeding.
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Chaihu Guizhi Ganjiang Decocotion is a famouse prescription recorded in Treatise on Febrile Diseases. In this article,the application of Chaihu Guizhi Ganjiang Decoction is discussed in treating gynaecological diseases through the cases of dysmenorrhea, climacteric syndrome, hypogalactia and hysteria. The mechanism is also expounded.