Developmental Changes of the LPL mRNA Expression and Its Effect on IMF Content in Sheep Muscle

This study investigates the developmental changes of the lipoprotein lipase （LPL） mRNA level in sheep muscle and its effect on intramuscular fat （IMF） accumulation. Male Kazak and Xinjiang Merino sheep at 2-120 days old were selected. Six animals of each breed were slaughtered at 2, 30, 60, 90, and 120 days （only the Xinjiang Merino sheep at 120-day old were available） to collect samples from longissimus dorsi muscle for the purpose of determining the IMF content and extracting total RNA that was used to investigate the developmental changes of the LPL mRNA expression by real-time PCR. The results showed that in male Kazak sheep, the IMF content increased with the progress of development and there were significant differences （P〈0.05） between the age groups. However, there was no difference （P〉0.05） between age groups in Xinjiang Merino sheep. Furthermore, the IMF content of the male Kazak sheep was significantly higher （P 〈 0.01） than that of the Xinjiang Merino sheep aged from 30 to 90 days. The highest LPL mRNA expression appeared at day 2 and it was significantly higher than that of all other age groups （P 〈 0.01）, while animals at 60-day old had the lowest LPL mRNA expression in the male Kazak sheep. In Xinjiang Merino sheep, the highest one occurred at 30-day old （P〈0.01）, followed by a continuous decrease to the lowest level at 90-day old, and then it started to increase slightly. At 2 to 60-day old, the LPL mRNA expression was negatively correlated to the IMF content （r=-0.625, P 〈 0.05） in male Kazak sheep, but no such relationship was detected in the male Xinjiang Merino sheep.     

银屑平丸对BALB/c小鼠银屑病样模型血清中IL-17、IL-23表达的影响

目的 建造BALB/c小鼠背部银屑病样模型,探讨中成药银屑平丸治疗银屑病的可能作用机制。方法 选取48只BALB/c小鼠,随机分为空白组、模型对照组、雷公藤组、银屑平丸高、中、低剂量组,8只/组。给予除空白组外其余小鼠背部皮肤外涂咪喹莫特软膏连续8 d,1次/d,建立模型小鼠。末次给药后,观察小鼠背部皮肤进行皮损面积和严重程度指数（psoriasis area and serenty index,PASI）评分;检测血清中IL-17、IL-23水平;取背部皮肤组织进行组织病理比较。结果（1）银屑平丸各组和雷公藤组对银屑病样小鼠背部皮肤PASI评分比较无明显的差异（P>0.05）,而较模型对照组和空白组评分均有明显的差异（P<0.05）。（2）各组银屑病样小鼠外周血IL-17和IL-23含量明显高于空白组（P>0.05）。而银屑平丸各组和雷公藤组均与模型对照组外周血中含量有明显的差异（P<0.05）。（3）银屑平丸各组和雷公藤组对银屑病样小鼠背部皮肤组织病理变化较模型对照组和空白组有明显差异（P<0.05）。结论 银屑平丸改善银屑病模型小鼠的作用机制可能通过抑制IL-17、IL-23,起到减轻小鼠银屑病样皮损的发生、发展的作用。     

Polysaccharide Nucleic Acid of Bacillus Calmette Guerin Modulates Th1/ Th2 Cytokine Gene Expression in Lipopolysaccharide-lnduced Mastitis in Rats

The aim of this study was to evaluate, in rats, the changes in the T helper type 1（Th1）/Th2 radio in mammary glands after an intramammary infusion of lipopolysaccharide （LPS） and to characterize the moderating effects of the polysaccharide nucleic acid of Bacillus Calmette Guerin （BCG-PSN） on the mammary gland. In the control group, the levels of IL-2 and INF-7 mRNA expression increased, whereas IL-4 mRNA expression decreased after LPS challenge. As a consequence, the INF-γ/IL-4 mRNA ratio was significantly higher at 3, 6, and 9 h post-infusion （PI） compared to the control value （0 h; P〈0.01）. BCG-PSN increased mRNA expression of both INF-γ and IL-4 before infusion of LPS. LPS challenge significantly the reduced Th1/Th2 cytokine ratio due to Thl cytokine IFN-γ suppression and Th2 cytokine IL-4 upregulation compared with the control group. A significant reduction of N-acetyl-β-D-glucosaminidase （NAGase） was observed at 24 h PI in the BCG-PSN treatment group compared to the control group （P〈 0.05）. Thus, it was demonstrated that level of BCG-PSN might change the Th1/Th2 ratio mainly by enhancing the Th2 immune response. This is the first report of a Th1/Th2 change induced by coliform mastitis and characterization of the effect of BCG-PSN on mammary gland inflammation. This study makes a better understanding of the mechanisms of coliform mastitis and provides a putative novel strategy for the prevention and/or treatment of mastitis.     

Effects of Echinacea purpurea extract on the immunological response to infectious bursal disease vaccine in broilers

Echinacea purpurea is among the most widely used herbal medicines throughout Europe and North America for the prevention or treatment of infectious diseases. However, there have been few reports on the effect of the herb in chickens. In order to investigate the immunomodulatory effect of Echinacea purpurea in fowls, 150 seven-day-old broilers were randomly divided into five groups (30 in each group). Birds in Groups A, B, and C were orally given Echinacea purpurea extract once a day at low (0.1 g, Group A), medium (0.5 g, Group B), and high (1 g, Group C) doses for seven days, while Group D and Group E, assigned as control Group I and control Group II, respectively, were given distilled water in the same amount as Groups A, B, and C. Broilers in Groups A, B, C, and D were normally immunized with infectious bursal disease (IBD) vaccine at 14-day-old, whereas Group E was neither treated with Echinacea purpurea extract nor vaccinated. Results indicated that antibody titers were higher (P<0.01) in the three Echinacea purpurea extract treated groups (Groups A, B, and C) compared with Group D on days 21, 28, 35, and 42 after treatment. The antibody titer raised more strikingly in groups treated with higher doses of Echinacea purpurea extract (0.5 g and 1 g) than lower dose (0.1 g). The IL-2 level in peripheral blood was significantly higher in Groups B and C compared with Group D (P<0.01 on day 21 and P<0.05 on days 28 and 35). No significant difference was observed between Group A and Group D. The TNF-α content in Group B was significantly higher than that of Group D (P<0.01 on day 21 and day 28, P<0.05 on day 35). Birds in Group C also showed a higher TNF-α content than Group D (P<0.05 at the three measuring dates). These results indicated that Echinacea purpurea extract significantly enhanced IL-2 and TNF-α production and antibody titers to the IBD vaccine. The Echinacea purpurea extract was also found to increase the feed conversion ratio.     

The Effect of Yucca schidigera Extract on Ruminal Fermentation and Parameters Traits in Sheep

In a completely randomized block design experiment, 16 ruminally cannulated sheep (40 ± 2.1 kg)fed a 50% concentrate 50% forage diet (DM basis) were given intraruminal doses of powdered Yucca schidigera extract (YSE). Doses of 0 (control), 100, 200, or 300 mg kg-1 diet were given at 8 p.m. and 4 a.m. On 15, 16, and 17 d of the experimental period, ruminal contents were sampled 0, 2, 4, 6, and 8 h after dosing, and blood samples were collected at the end of the experiment (18th and 19th d). Acidity was not affected (P＞0.05) by the addition of YSE. Compared with the control, ruminal propionate concentration was increased by 29.4 and 29.8% (P＞0.05) and the acetic acid concentration was decreased by 15.1 and 19.8% (P＞0.05) at 4 and 6 h after YSE (300 mg kg-1) dosing, respectively. Ruminal ammonia concentration in the first 2 h after feeding was higher (P＜0.05) in the sheep that did not receive YSE (increased by 17.57 mg 100 mL-1) than in those that received 200 mg kg-1 (increased by 6.77 mg 100 mL-1) or 300 mg kg-1 (increased by 6.50 mg 100 mL-1) YSE. Protozoan populations in the rumen were lower (P ＜ 0.05) in the animals that received 300 mg kg-1 of YSE compared with the control. All serum parameters of the four groups were in the normal range and were similar among the treatment groups (P＞0.05), after being fed for 19 d with different doses of YSE. The effect of YSE on ruminal ammonia concentration likely resulted from a decreased concentration of protozoan populations and, presumably, from ammonia binding by YSE.     

补饲对放牧西门塔尔犊牛生长性能及血液指标的影响

为研究放牧加补饲对西门塔尔犊牛生长性能和血液指标的影响,选取内蒙古赤峰草原的放牧犊牛16头,分为放牧组和放牧加补饲组,测量体重、体尺等生长性能指标,用酶联免疫法测定血清中总蛋白(TP)、尿素氮(BUN)、葡萄糖(GLU)、白介素1(IL-1)和白介素2(IL-2)等血液指标。结果表明:1)在正试期的0~30 d 2组犊牛的日增重无显著差异(P>0.05),但在31~60 d放牧加补饲组犊牛日增重显著高于放牧组(P<0.05);在整个试验阶段,放牧加补饲犊牛体尺指标除胸围外,均高于放牧组,但差异不显著(P>0.05)。2)放牧加补饲使犊牛血清中尿素氮(BUN)和葡萄糖(GLU)含量显著提高(P<0.05);而总蛋白(TP)和甘油三酯(TG)含量差异不显著(P>0.05)。3)放牧加补饲犊牛免疫球蛋白G(IgG)和白介素1(IL-1)含量显著升高(P<0.05);而三碘甲状腺原氨酸(T₃)、甲状腺素(T₄)、生长激素(GH)和白介素2(IL-2)含量有高于放牧组的趋势,但差异不显著(P>0.05)。综上,补饲可提高放牧西门塔尔犊牛的生长性能,改善血液生化指标和血清激素水平,并可改善西门塔尔犊牛整体免疫水平。     

Varietal and Seasonal Effect of Rice on the Physicochemical Properties of Rice Flakes

Rice-based flakes made from 7 mid-season rice varieties （4 indica and 3 japonica subspecies） and 3 early season indica varieties produced both in early and late season were studied for their main physicochemical characters, including water activity, film thickness, bulk density （BD）, ash, reducing sugars （RS）, protein, phytic acid, starch, amylose, and rapid visco analyser （RVA） viscosity profile. A significant varietal effect was found for all these parameters （P〈 0.05 or 0.01） except starch. Strong variety x season interactions were observed but the seasonal effect was less pronounced, and only significant （P〈0.01） for RS. The apparent amylose content （AAC） office flakes was significantly correlated （P〈0.01） with AAC （r=0.99） and several RVA profile parameters [e.g., final viscosity （r=0.92）] of rice flour. For rice flakes, BD was significantly correlated with AAC （r=0.82, P〈0.01） and most RVA profile parameters. The study indicates that varietal and environmental effects should be considered simultaneously for optimal production of rice grains for rice flakes manufacturing.     

Effect of Wheat Middlings, Microbial Phytase, and Citric Acid on Phytate- Phosphorus, Calcium, and Protein Utilization of Broilers

A corn-soybean meal diet （CSB） （or Diet 1） containing 23% crude protein （CP） was used as the positive control, and another corn-soybean meal diet containing 21% CP and 15% wheat middlings （WM） （or Diet 2） was used as the basal diet, which was treated with four different treatments. Digestibility experiment was employed to discuss the collective effect of citric acid, and intrinsic and microbial phytase. By comparing and analyzing effects of them in the low-nutrient broiler diets, the results showed five treatments had similar effects on Tibia ash （%） （mg） （P〉0.05）. Under the supplementation of bacterial phytase or citric acid, the daily body weight gain （ADG）, gain：feed （G：F） ratio, and calcium （Ca） utilization were similar to that of standard-nutrient CSB diet （Diet 1） （P 〉 0.05）. And, fecal phosphorus （P） and CP utilization were lower than （P〈0.05） that of Diet 1. But P utilization was significantly higher than （P〈0.01） that of Diet 1. However, the ADG, G：F, and CP utilization produced by supplementation of intrinsic phytase were lower than those of Diet 1, but other aspects were similar to those produced by Diet 1 （P〉0.05）. In Diet 5, citric acid, intrinsic and bacterial phytase were added to the diet, which produced a 1.4% decrease on fecal P, a 7.2% increase on Ca utilization, which was significantly higher than （P〈0.01） those of the other four Diets, a 3.9% increase on G：F, which was similar to that of Diet 1, and a 2.3% increase on CP utilization, which was higher than （P〈0.05） that of the other three diets. In summary, the results of this study indicated that citric acid, intrinsic and bacterial phytase might have some additive or synergistic effects, and low-nutrient CSB diets with 15% wheat middlings, 750 U kg^-1 phytase, and 3% citric acid might substitute completely for standard CSB in broilers.     

犀角地黄汤加减联合血浆置换治疗急重型系统性红斑狼疮的疗效与机制研究

目的 探讨犀角地黄汤加减联合血浆置换（PE）治疗急重型系统性红斑狼疮（SLE）的疗效及作用机制。方法 纳入我院180例SLE患者,随机数字表法分为A、B、C三组。A组采取环磷酰胺冲击治疗、B组采取PE治疗,C组采取PE联合犀角地黄汤。比较三组治疗前后的症状评分、SLEDAI评分、补体C₃、血沉（ESR）、抗ds-DNA抗体、血清肌酐（Scr）、血清胱抑素（CsyC）、谷草转氨酶（AST）、谷丙转氨酶（ALT）、24 h尿蛋白、人干扰素-r（IFN-r）、白介素-10（IL-10）、BAFF因子,统计3组治疗总有效率及不良反应发生率。结果 B、C组治疗后各观察点的症状评分、SLEDAI评分、ESR、ds-DNA抗体、24 h尿蛋白、Scr、CsyC、AST、ALT、血清BAFF均低于A组（P<0.05）。C组治疗后各观察点的IFN-r^- IL-10⁺与IFN-r⁺ IL-10⁺亚群所占百分率低于A、B组（P<0.05）。B、C组治疗后各观察点的C₃高于A组（P<0.05）。B组与C组治疗总有效率为分别为90.0%、93.3%,均高于A组的71.7%（P<0.05）。C组不良反应发生率为10.0%,低于A组与B组（P<0.05,P<0.01）。结论 PE可去除血浆中有害成分、抑制炎症反应,联合犀角地黄汤可进一步扶助正气、解毒化瘀,改善机体免疫功能,达到增效减毒目的,效果更理想。     

Effects of Limiting Amino Acids on Rumen Fermentation and Microbial Community In vitro

Three goats fitted with cannula were used to provide rumen liquor to investigate the effects of limiting amino acids on rumen fermentation and microbial community in vitro. The removal method was used in the current experiments. Treatments are total essential amino acid （TEAA）, His-removal, Lys-removal, Met-removal, and branch chain amino acid （BCAA）- removal. Results indicated that, pH-value ranged between 5.9 and 6.8, with the highest mean value for the group with BCAA-removal （6.54） in the culture. Concentration of NH3-N ranged between 10.99 to 30.51 mg 100 mL^-1, with the group of TEAA recording the highest average NH3-N concentration （17.85 mg 100 mL^-1）. Yields of microbial protein and limiting degree on microbial growth varied with treatments （P 〈 0.01）, and the lowest accrued in treatment with BCAA-removal （0.1389, 0.1772, and 0.3161 mg mL^-1 for bacteria, protozoa, and mixed microbes, respectively）, compared to the group with TEAA, microbial production of mixed microbes decreased by 44.52%. As for micro-flora, protozoa to bacteria ratio was the lowest for the group with Lys-removal （89.12%）, while the highest for the group with BCAA-removal （127.60%） （P 〈 0.01）. Furthermore, PCR-SSCP analysis revealed that, microbial profile subjected to substrates within bacteria and protozoa groups. It was therefore concluded that, dietary amino acid influenced both rumen fermentation and microbial characteristics.     

Effect of Hypoglycemia on Performances, Metabolites, and Hormones in Periparturient Dairy Cows

In this research work, 24 multiparous holstein cows were used to evaluate the effect of hypoglycemia on periparturient metabolism and lactation performance. The cows were arranged into two groups of hypoglycemia （L） and normal plasma glucose （N） based on plasma glucose level. The same diets were fed ad libitum from 28 days before expected calving date to 28 days after calving. The parameters relative to energy balance, such as dry matter intake （DMI）, body weight （BW）, milk yield （MY）, and concentrations of plasma glucose, nonesterified fatty acids （NEFA）, β-hydroxybutyric acid （BHBA）, insulin （INS）, glucagons （GLN）, leptin （LP）, neuropeptide Y （NPY） in plasma were measured at regular intervals. Incidence of hypoglycemia was higher prepartum than that of postpartum （88% vs. 50%）, and the recurrence of hypoglycemia was reversed （31% vs. 100%）. Hypoglycemia did not affect feed intake before and after calving. With the increase of postpartum feed intake, incidence of hypoglycemia decreased rapidly, even disappeared at 28 days of postpartum. Hypoglycemia had no impact on prepartum BW, but BW in L group was lower than that of cows in N group at 1 day and 14 days of postpartum （P〈0.05）. Milk yield was not affected by hypoglycemia. Cows in L group had higher plasma NEFA concentration than cows in N group. It reached a peak （1442 μmol L^-1 vs. 1052 μmol L^-1） at day 1 of postpartum （P〈0.05）. Plasma BHBA concentration of cows in L group was higher than that in N group, which reached a peak （2.01 mmol L^-1 vs. 1.34 mmol L^-1） at 14 days of postpartum （P〈0.05）. Plasma concentration of INS and GLN was unaffected by treatment, but postpartum plasma GLN concentration obviously increased, especially in L group. Plasma concentration of LP and NPY before calving was unaffected by treatment, but postpartum LP level in L group was slightly lower than that in N group, and NPY level in L group was significantly higher than that in N group （P〈0.05）. Overall, periparturient dairy cows are easy to develop hypoglycemia, which stimulates lipid metabolism. Adaptive changes of some metabolites and hormones, such as NEFA, BHBA, INS, GLN, LP, NPY are of benefit to increase feed intake and recovery of NEB in periparturient period, but there still are some issues on interaction of those endocrine factors in the energy balance of periparturient cows to be understood further.     

舍饲和放牧饲养对藏猪营养成分影响分析

为检测不同饲养方式对藏猪肉营养成分的影响,选择舍饲和放牧饲养的300日龄藏猪18头,取背最长肌测定其氨基酸、脂肪酸及微量矿物元素含量。结果表明:舍饲组藏猪谷氨酸含量显著低于放牧组(P0.05),甘氨酸、丙氨酸及鲜味氨基酸总量极显著低于放牧组(P0.01),且两组必需氨基酸/总氨基酸(M_(EAA)/M_(TAA))都在40%左右,必需氨基酸/非必需氨基酸(M_(EAA)/M_(NEAA))都高于60%,都达理想蛋白要求;舍饲组多不饱和脂肪酸与必需脂肪酸总量极显著低于放牧组(P0.01),膳食推荐M_(PUFA)/M_(SFA)最好高于0.4,放牧组藏猪高于0.45,达理想值。通过微量矿物元素含量检测发现舍饲组锌和铬含量极显著低于放牧组(P0.01),硒含量显著高于放牧组(P0.05)。综上,放牧饲养藏猪脂肪酸组成好,肉质风味优于舍饲饲养藏猪。     

低温和硒对育雏期笼养蛋鸭生长性能及内分泌的影响

以1日龄蛋雏鸭为试验动物,采用2×3(温度×硒)重复实验设计,研究适温、低温环境下日粮中添加不同水平的硒(0.2、0.4、0.8mg.kg-1)对育雏期笼养蛋鸭生长性能、内分泌的影响。结果表明,低温显著降低试验各周及全期的日增重(P<0.05),并使料重比显著增加(P<0.05),低温使试验各周的日采食量显著增加(P<0.05),全期虽不显著但有增加趋势;添加0.4mg.kg-1的硒能最有效提高日增重并降低日采食量和料重比,但差异不显著。低温使血清T3水平显著升高(P<0.01),T4水平有升高的趋势。在适温和低温环境下提高硒水平使T3有降低趋势,T4先升高后降低,但总体有升高趋势。低温环境下,血清皮质醇浓度较适温环境略有升高,提高硒添加水平,可使血清皮质醇浓度有降低的趋势。综合试验结果可知,低温使蛋雏鸭的生长性能下降;低温环境下添加0.4mg.kg-1硒在改善生长性能、调节内分泌等方面较其它添加水平作用更明显,能在一定程度上减缓低温对育雏的影响。     

槐耳颗粒配合肺叶切除术治疗原发性支气管肺癌的临床研究

目的 研究槐耳颗粒配合胸腔镜肺叶切除术对原发性支气管肺癌患者的影响。方法 选取2013年7月-2016年7月我院及承德医学院附属医院收治的原发性支气管肺癌患者96例,采用随机数字表法分为观察组与对照组,对照组患者采用胸腔镜肺叶切除术治疗,观察组患者采用槐耳颗粒配合胸腔镜肺叶切除术治疗,对比两组患者临床疗效、高血钙发生情况、血清钙水平、胰岛素样生长因子1（IGF-1）、白细胞介素-8（IL-8）和癌胚抗原（CEA）水平。结果 观察组患者治疗总有效率100.0%,显著高于对照组87.5%（P<0.05）;治疗后两组高血钙发生率及血清钙水平较治疗前均降低（P<0.05或P<0.01）;观察组患者治疗后高血钙发生率2.1%显著低于对照组18.8%（P<0.01）,血清钙水平明显低于对照组（P<0.05）;两组患者治疗后IGF-1、IL-8和CEA水平均明显低于治疗前（P<0.01）,且观察组显著低于对照组（P<0.01）。结论 槐耳颗粒配合胸腔镜肺叶切除术能够有效提高原发性支气管肺癌患者治疗效果,降低IGF-1、血清钙、IL-8、CEA水平。     

酵母硒对亚慢性铅中毒小鼠排铅作用的实验研究

研究酵母硒对染铅小鼠排铅作用的影响。选择雄性健康昆明小白鼠90只,随机分为6组,每组15只。1组为阴性对照组,2组为醋酸铅模型组,3组为亚硒酸钠组,4～6组为酵母硒低、中、高剂量组。除阴性对照组外,其余组分别饲喂等量的醋酸铅,30d后测定每组小鼠血液、脑、骨、肝中铅的含量。结果表明,酵母硒组小鼠血液、脑、骨、肝铅水平均显著低于醋酸铅模型组(P<0.05)。可见酵母硒对亚慢性铅中毒小鼠具有明显的排铅作用。     

龙胆通窍丸对湿热型慢性鼻窦炎抗炎效应的临床研究

目的 观察龙胆通窍丸治疗湿热型慢性鼻窦炎的临床疗效。方法 选择湿热型慢性鼻窦炎患者80例,随机分为治疗组与对照组各40例;治疗组以龙胆通窍丸口服,对照组采用西医常规治疗。疗程4周。观察两组治疗前后相关炎性细胞因子血清白介素-6（IL-6）、血清白介素-8（ IL-8）变化及临床疗效评分。结果 治疗后两组VAS、Lund-Kennedy评分均有不同程度降低﹙P<0.01）,且治疗组下降更显著（P<0.05）;治疗后两组血清IL-6和IL-8水平明显下降（P<0.01）,且治疗组下降更显著（P<0.01）。结论 龙胆通窍丸能显著提高湿热型慢性鼻窦炎患者的临床疗效,其作用优于常规西药治疗。     

复方丹参滴丸联合他汀类药物防治冠心病患者PCI术后并发造影剂肾病的疗效及对血管功能的影响

目的 探讨复方丹参滴丸联合他汀类药物防治冠心病（CHD）患者经皮冠状动脉介入治疗（PCI）术后并发造影剂肾病（CIN）的效果及对血管功能的影响。方法 按随机数字表法将行PCI术的194例CHD患者分成联合组和对照组各97例。对照组予以水化+阿托伐他汀方案,联合组在对照组基础上联合复方丹参滴丸口服方案。观察比较两组患者手术前后肾功能损害指标[血清肌酐（SCr）、细胞间黏附分子-1（ICAM-1）、内生肌酐清除率（Ccr）]、血管内皮功能[内皮素（ET）、肱动脉血管内皮依赖性舒张功能（FMD）]、炎症因子[白细胞介素-6（IL-6）、白细胞介素-8（IL-8）]检测结果变化情况,比较其CIN发生率差异。结果 两组患者术后血清SCr、ICAM-1水平均较术前明显提高（P<0.01）,但联合组低于对照组（P<0.05）;CCr水平则较术前明显降低（P<0.01）,但联合组高于对照组（P<0.05）。两组患者术后血清ET、IL-6、IL-8水平均较术前明显降低（P<0.01）,且联合组低于对照组（P<0.05）;FMD水平则较术前明显提高（P<0.01）,且联合组高于对照组（P<0.05）。联合组CIN发生率明显低于对照组（P<0.05）。结论 复方丹参滴丸联合阿托伐他汀能有效降低CHD患者PCI术后CIN发生风险,对减轻其肾脏损害程度、改善血管内皮功能具有积极意义。     

早期断奶对沂蒙黑山羊羔羊生长性能、盲肠短链脂肪酸含量和菌群多样性的影响

为分析早期断奶对沂蒙黑山羊羔羊生长性能、盲肠短链脂肪酸含量和菌群多样性影响,选用0d沂蒙黑山羊羔羊36只,分为2组,对照组和试验组,每组18只羔羊.母乳组(B组)羔羊哺喂母乳,代乳粉组(R组)于8 d起断奶,10 d完全哺喂代乳粉,15 d开始两组均饲喂开食料.在8、10、15、25、45和75 d时每组随机屠宰3头羊...     

知柏地黄汤对UU感染大鼠生精细胞凋亡及凋亡因子Cyt-c、AIF表达的影响

目的 探讨知柏地黄汤对解脲支原体（Ureaplasma urealyticum,UU）感染大鼠精液质量、生精细胞凋亡及凋亡因子Cyt-c、AIF表达的影响。方法 从60只雄性SD大鼠中随机抽取45只,经膀胱注射造成UU感染动物模型,剩余15只作为正常组。UU感染模型动物再随机分成模型组、阿奇霉素组（西药组）和知柏地黄汤组（中药组）,于接种后第10 d予以模型组和正常组生理盐水灌胃,阿奇霉素组和知柏地黄汤治疗组分别予相应药物灌胃,连续干预21 d后处死动物,检测各组精子运动参数、生精细胞凋亡率及细胞凋亡因子细胞色素C（cytochrome c,Cyt-c）、细胞凋亡诱导因子（apoptosis inducing factor,AIF）表达水平。结果 与正常组比较,模型组大鼠精子质量明显降低,UU培养阳性率、生精细胞凋亡率及Cyt-c、AIF表达明显升高（P<0.01,P<0.05）。与模型组比较,中药组、西药组精子质量提高,UU培养阳性率、细胞凋亡率、Cyt-c、AIF表达均降低（P<0.01,P<0.05）;与西药组比较,中药组改善精子质量较高（P<0.05,P<0.01）,降低UU感染率,差异无统计学意义（P>0.05）。结论 知柏地黄汤改善UU感染大鼠精子质量优于阿奇霉素,且与阿奇霉素抗UU感染作用相当,其机制可能与其降低凋亡因子Cyt-c、AIF表达相关。     

Correlation Between Antioxidation and the Content of Total Phenolics and Anthocyanin in Black Soybean Accessions

The objective of this study was to investigate the correlations between antioxidations and the contents of the total phenolics and anthocyanin in 127 accessions of black soybean. A T-test, a fast clustering procedure, and a correlation coefficient analysis were used for experimentation. The variation ranges of the total antioxidant capacity （TAC）, the total phenolics, and anthocyanin contents in 127 black soybean accessions were 0.44-3.56, 7.05-74.82, and 0.22-1.87 mg g-l, respectively, displaying significant genotype differences. The major differences in TAC, the total phenolics, and the anthocyanin contents existed among various types of accessions from geographical regions. The differences between the accessions from black and yellow soybeans, spring and autumn, summer and autumn, Dongbeichun and Nanfangchun, Dongbeichun and Nanfangxia, Beifangchun and Nanfangchun, and Beifangchun and Nanfangxia were significant at 0.01 or 0.05 levels, respectively. The general tendency was that the TAC, the total phenolics, and the anthocyanin contents of Beifangchun accessions were higher than that of Dongbeichun ones, while that of Nanfangchun accessions were the worst. 127 black soybean accessions could be clustered into 6 clusters, which consisted of 3, 24, 20, 31, 37, and 12 accessions, respectively. The most significant （P 〈 0.01） correlations existed respectively between the TAC and the total showed that the total substances phenolics content, and the TAC and the anthocyanin content of black soybean. The results phenolics and anthocyanin in black soybean seed coat were the important antioxidation