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1.
旨在探讨郁金散对大肠湿热证大鼠回肠、结肠肠黏膜SIgA和炎性因子的影响。体重180～220 g Wistar大鼠40只,随机分为正常对照组、大肠湿热证模型组、自愈组和郁金散治疗组,每组10只。通过饮食设置(高糖高脂饮食)、饥饱失常和灌服白酒并结合高温高湿环境,最后腹腔注射生物因子大肠杆菌,以模拟大肠湿热证发病条件,建立大肠湿热证大鼠模型。郁金散治疗组用郁金散治疗5 d,然后采集回肠和结肠组织制作病理切片,进行组织病理学观察;用ELISA法检测回肠和结肠黏液中免疫球蛋白SIgA含量及组织炎性细胞因子TNF-α、IL-1β、IL-6、IL-10、IL-17和IL-23含量。结果显示,模型大鼠回肠和结肠黏膜上皮细胞变性、坏死、脱落,上皮完整性被破坏,有炎性细胞浸润现象;郁金散治疗组黏膜上皮再生,完整性得到恢复,连续性良好,排列有序,炎性细胞浸润明显减少。模型组大鼠回肠和结肠黏液中的SIgA含量均显著高于正常对照组(P0.05);郁金散治疗组显著低于自愈组(P0.05)。模型组回肠和结肠组织中促炎因子TNF-α、IL-1β、IL-6、IL-17和IL-23含量显著或极显著高于正常对照组(P0.05或P0.01),抑炎因子IL-10含量显著或极显著低于正常对照组(P0.05或P0.01);郁金散治疗组回肠组织的上述炎性因子含量与自愈组相比均差异显著(P0.05);结肠中的TNF-α、IL-10、IL-23与自愈组差异显著(P0.05);IL-1β、IL-6、IL-17与自愈组差异极显著(P0.01)。结果表明,大肠湿热证模型大鼠回肠和结肠黏膜免疫稳态被打破,表现为SIgA分泌亢进,炎性细胞因子分泌紊乱;郁金散治疗可以促使其显著回调。 相似文献
2.
《畜牧兽医学报》2017,(6)
探讨郁金散对大肠湿热证模型大鼠血清和肠道组织胃肠激素的影响。Wistar大鼠60只,体重180~220g,随机分为正常对照组、大肠湿热证模型组、自愈组、郁金散高、中、低剂量治疗组,每组10只。通过自由饮用蜂蜜水;前10d禁食与饲喂充足饲料并灌胃猪油隔日交替进行;之后5d每天灌白酒,并置于高温高湿环境(8h·d-1);然后腹腔注射大肠杆菌,24h后再注射一次建立大肠湿热证大鼠模型。造模成功后,分别给予高(10.4g·kg~(-1))、中(5.2g·kg~(-1))、低(2.6g·kg~(-1))剂量郁金散进行治疗。整个试验过程中观察大鼠的临床症状和体征,记录体重变化,检测血清和回肠、结肠组织中的胃肠激素含量。结果显示:模型大鼠出现便溏、粪便色黄恶臭、肛门红肿、发热等症状和体征。正常组体重逐渐上升,模型大鼠造模期间体重呈现先波状上升、再逐渐下降的趋势,郁金散治疗后体重呈逐渐上升的趋势,其中以高剂量组回升最明显,但各组均无显著性差异(P0.05)。与正常对照组相比,模型组和自愈组大鼠血清、回肠及结肠组织中胃动素(MTL)、胃泌素(GAS)、P物质(SP)含量极显著或显著升高(P0.01或P0.05),血管活性肠肽(VIP)无显著变化,生长抑素(SS)含量极显著降低(P0.01);与自愈组相比,各剂量郁金散治疗后,MTL、GAS、SP、VIP和SS都有不同程度的回调,以高剂量组回调最为明显,其中高剂量组大鼠血清、回肠、结肠中MTL、GAS和SP极显著或显著降低(P0.01或P0.05),SS极显著或显著升高(P0.01或P0.05)。大肠湿热证模型大鼠机体出现了胃肠激素紊乱,表现为MTL、GAS、SP和VIP含量升高,而SS含量降低,郁金散能改善大肠湿热证模型大鼠机体胃肠激素异常水平,且高剂量的治疗效果最好。 相似文献
3.
本试验旨在阐明郁金散对大肠湿热证大鼠血清免疫球蛋白与抗氧化相关因子的调节作用。选取60只Wistar大鼠,随机分为正常对照组、大肠湿热证模型组、自愈组以及郁金散高、中、低剂量治疗组,共6组,每组10只。通过模拟大肠湿热证发病条件,饮食中采用高糖高脂饮食、饥饱失常、灌服白酒,设置高温高湿环境,再腹腔注射生物因子大肠杆菌,以建立大肠湿热证大鼠模型。此后分别用高、中、低剂量郁金散治疗5d。然后检测血清免疫球蛋白IgA、IgG、IgM水平,并采集脾、胸腺进行组织病理学观察;同时检测血清及肝组织脂质过氧化物(LPO)、丙二醛(MDA)、还原型谷胱甘肽(GSH)、一氧化氮(NO)水平。结果显示:与正常对照组相比,模型组血清IgA、IgG、IgM含量极显著升高(P0.01);与自愈组相比,各剂量郁金散治疗组有不同程度的回调,其中以高剂量组回调最明显,高剂量组中IgA和IgM含量显著降低(P0.05),IgG含量极显著降低(P0.01)。病理切片显示大肠湿热证模型大鼠脾和胸腺组织形态结构紊乱,脾淤血,胸腺严重萎缩;郁金散高剂量组脾结构趋于正常,胸腺萎缩程度降低。与正常对照组相比,模型组大鼠血清和肝组织中MDA和LPO含量极显著升高(P0.01),GSH和NO含量极显著降低(P0.01);与自愈组相比,各剂量郁金散治疗组有不同程度的回调,其中以高剂量组回调最明显,MDA和LPO含量显著或极显著降低(P0.05或P0.01),GSH和NO含量显著或极显著升高(P0.05或P0.01)。大肠湿热证模型大鼠机体免疫功能异常、氧化与抗氧化平衡紊乱,郁金散可通过回调大肠湿热证机体的血清免疫球蛋白水平,改善免疫器官脾和胸腺的结构,调节机体的氧化和抗氧化平衡关系而治疗大肠湿热证,其中以高剂量组治疗效果最好。 相似文献
4.
【目的】基于网络药理学和分子对接技术探讨郁金散加减方治疗猪传染性胃肠炎(TGE)的作用靶点及机制。【方法】在中药系统药理学数据库与分析平台(TCMSP)搜索郁金散加减方的活性成分及靶点并经UniProt平台转换,在比较毒理基因组学数据库(CTD)中搜索TGE相关靶点,将两者交集靶点导入Cytoscape 3.9.1软件中构建郁金散加减方-成分-靶点-疾病网络关系图,在STRING数据库和Cytoscape 3.9.1软件中进行蛋白互作(PPI)网络分析,在DAVID数据库中进行GO功能和KEGG信号通路富集分析,用AutoDock软件进行分子对接。【结果】共收集到郁金散加减方包括槲皮素、芒柄花黄素在内的126个活性成分,得到郁金散加减方治疗TGE的相关靶点74个。郁金散加减方-成分-靶点-疾病网络关系图结果显示,郁金散加减方治疗TGE的核心成分为槲皮素、山奈酚等;PPI结果表明,郁金散加减方治疗TGE的核心靶点为抑癌基因P53(TP53)、癌基因FOS、肿瘤坏死因子(TNF)、基质金属蛋白酶9(MMP9)及胱天蛋白酶3(CASP3)等;GO功能和KEGG信号通路分析结果显示,郁金散加减... 相似文献
5.
母体妊娠期应激对后代出生前后下丘脑-垂体-肾上腺轴的影响及其机制 总被引：1，自引：0，他引：1
动物的生理健康与其正常下丘脑-垂体-肾上腺(hypothalamus-pituitary-adrenocortical,HPA)轴活性是密不可分的.母体妊娠期应激对后代出生前后HPA轴功能及生长发育等均有显著的程序化影响,尤其是对胎儿期HPA轴的影响更大.这种影响主要是通过改变后代上游海马体、下丘脑和垂体中的糖皮质激素受体和盐皮质激素受体表达实现的.下游器官肾上腺皮质作为HPA轴的重要组成部分,也可能是HPA轴程序化的靶器官,有待深入研究. 相似文献
6.
新城疫(ND)是影响鸵鸟养殖业最主要的传染病之一,新城疫病毒(NDV)作为应激原,进入机体后可引起一系列病理变化,使机体下丘脑-垂体-肾上腺皮质轴(HPA)处于过度激活或失活状态,进一步加重内环境紊乱,引起病情加重.鉴于此,本研究以45 d雏鸵鸟为试验动物,分正常组和攻毒组(皮下注射鸡新城疫标准毒株F4s E9);利用HE染色技术、透射电镜(TEM)技术和免疫组化技术定位表达(SABC)技术,研究NDV对雏鸵鸟HPA轴的形态及γ-氨基丁酸(GABA)表达的影响;结果表明:(1)雏鸵鸟HPA轴对鸡源NDV高度敏感,可引起HPA轴发生明显的病理组织学变化,肾上腺病变严重,下丘脑次之,垂体病变较轻,其病变程度反映了HPA轴功能受损的程度;(2)人工感染鸡源NDV,雏鸵鸟HPA轴内GABA表达均下降,其在肾上腺内的消长规律提示GABA可能参与了ND病理应激下的HPA轴应激反应过程;其表达数量和表达强弱与机体的病理性应激反应进程有关. 相似文献
7.
脂多糖刺激对断奶仔猪下丘脑-垂体-肾上腺轴PPARγ表达的影响 总被引：1，自引：0，他引：1
研究脂多糖(LPS)对断奶仔猪下丘脑-垂体-肾上腺(HPA)轴过氧化物酶体增殖物活化受体γ(PPARγ)表达的影响。对照组注射生理盐水,试验组注射LPS。注射后1.5 h和3 h采血,3 h采血后屠宰。结果表明:LPS刺激后1.5 h,中性粒细胞含量及其比例显著下降(P<0.05);LPS刺激后3 h,白细胞、淋巴细胞、中性粒细胞含量显著下降(P<0.05)。LPS刺激后1.5 h,血浆肿瘤坏死因子(TNF)-α、皮质醇和促肾上腺皮质激素释放素激素(CRH)含量显著上升(P<0.05);LPS刺激后3 h,血浆TNF-α、皮质醇和促肾上腺皮质激素(ACTH)含量显著上升(P<0.05);LPS刺激导致下丘脑、腺垂体、肾上腺皮质和髓质中PPARγ阳性细胞百分率显著升高(P<0.05)。这表明LPS导致免疫应激,激活HPA轴,诱导HPA轴PPARγ的表达。 相似文献
8.
旨在探讨牛磺鹅去氧胆酸(taurochenodeoxycholic acid, TCDCA)对佐剂性关节炎(AA)大鼠下丘脑-垂体-肾上腺轴(HPA)轴的影响。试验采用完全弗氏佐剂(CFA)法制备了AA大鼠,并将其分为5组,即模型组、TCDCA低剂量(0.1 g/kg)预防组和治疗组、TCDCA高剂量(0.2 g/kg)预防组和治疗组,并以正常的Wistar大鼠作为对照组,每组8只。给药方案：预防组于致炎前3 d,按照相应的药物剂量进行灌胃给药,1次/d,连续31 d。治疗组于致炎后第14天,按照相应的药物剂量进行灌胃给药,1次/d,连续14 d。通过外观观察对AA大鼠模型进行评价,并采用ELISA法检测大鼠血清中促肾上腺皮质激素释放激素(CRH)、促肾上腺皮质激素(ACTH)和皮质醇(CORT)的含量。结果显示：与正常组大鼠相比较,造模后14 d左右,模型组大鼠对侧足跖肿胀,造模后18～21 d,模型组大鼠尾部出现明显结节,提示AA大鼠模型制备成功。与正常对照组相比,模型组大鼠血清中ACTH、CORT含量显著升高(P<0.05),TCDCA低剂量治疗组可显著提高AA大鼠血清中C... 相似文献
9.
nesfatin-1是新近发现的一种厌食神经肽,在中枢主要位于下丘脑和脑干,在外周主要分布于胃、肠、胰岛和性腺,其表达受到营养、生理、病理和其他摄食激素的调节。nesfatin-1在中枢神经元和外周细胞中与多种激素协同参与摄食和血糖稳衡等能量代谢过程,并激活下丘脑-垂体-肾上腺轴(HPA)参与应激反应,还能作用于HPA影响发育期的启动。本文重点对nesfatin-1在中枢和外周的分布、影响其表达的因素以及生物学功能进行了综述。 相似文献
10.
将毛发皮质醇激素作为反映慢性应激程度的黄金标准具有前瞻性和创新性。毛发皮质醇激素不仅可用于检测及估计动物慢性应激程度,且有助于了解动物体生理病理过程,并及时制定行之有效的健康管理策略。血液、唾液、尿液及乳汁中皮质醇激素含量作为反映急性应激程度的模型,被用于检测和建立持续的皮质醇激素昼夜循环规律研究。而毛发作为一个很好的补充模型却可以回顾性地反映慢性应激程度。毛发皮质醇激素作为反映慢性应激的生化指标不仅具有采样应激小、检测灵敏、方便的优点,而且是可遗传性状(h2=0.31),可以作为下丘脑-垂体-肾上腺轴(HPA轴)活性标记,进而利用其解释遗传变异对慢性应激中HPA轴活性变化的影响程度。作者综述了皮质醇激素与动物体健康的关系,慢性应激下机体调节机理及遗传适应改变,慢性应激评定指标研究进展,毛发作为皮质醇激素研究模型的研究进展,以及毛发皮质醇激素作为反映慢性应激的生化指标的限制与未来面对的挑战。 相似文献
11.
以45日龄雏鸵鸟为试验动物,分正常组和攻毒组,利用RIA技术和TUNEL技术,探讨新城疫病毒（NDV）对雏鸵鸟HPA轴的影响。结果表明,雏鸵鸟感染NDV,HPA轴内细胞凋亡数量在病毒感染期间明显高于对照组,提示NDV能诱导雏鸵鸟HPA轴系统发生细胞凋亡;在病毒接种后1d,肾上腺内可检测到大量凋亡细胞,接种5d后凋亡数量显著增加（P〈0.05）,之后凋亡呈下降趋势,肾上腺内细胞凋亡的动态变化反映了雏鸵鸟HPA轴对ND病变的适应和调节。雏鸵鸟感染NDV,血清ACTH水平于NDV接种后1d开始上升,至5d达到峰值（P〈0.01）,之后有所下降,渐趋于正常;血清Cor水平于病毒接种后1d开始下降,至7d有所回升,9d渐趋于正常水平,表明NDV接种后雏鸵鸟血清ACTH和Cor水平的变化与其HPA轴功能的损伤及恢复密切相关。 相似文献
12.
Chien‐Ho Yu Ching‐Yi Chen Chih‐Cheng Chang 《Journal of animal physiology and animal nutrition》2019,103(4):1218-1223
This study was conducted to examine the effects of weaning stress on gene expression of specific markers in hypothalamus‐pituitary‐adrenal (HPA) axis and neuronal activity in the newly weaned piglets. Twelve 28‐days‐old, newly weaned crossbred (Landrace × Yorkshire × Duroc) male piglets from 6 l (2 piglets/l) were randomly categorized into two groups: (a) weaning stress: piglets were separated from their dams, relocated and mixed with the unacquainted domestic piglets for 2 hr (stress, n = 6); (b) no‐stress: piglets stayed with their dams in the farrowing house (NS; n = 6). After weaning stress, all piglets were electrically euthanized and the blood samples/HPA tissues were collected for subsequent analysis, including plasma cortisol and mRNA expression of c‐fos, c‐jun, corticotropin‐releasing hormone (CRH), CRH receptor 1 (CRHR‐1) and adrenocorticotropin hormone receptor (MC2R). Results: Weaning stress significantly (p < 0.05) increased the plasma cortisol level and suppressed the expression of c‐fos and CRH in hypothalamus. In addition, weaning stress enhanced the mRNA abundance of c‐jun and CRHR‐1 in the pituitary gland. No significant differences in the gene expression of MC2R and CRHR‐1 were observed in the adrenal gland between treatment groups. Taken together, HPA involved in weaning stress and CRHR‐1 and c‐jun could be potential markers to evaluate the activation of HPA axis. 相似文献
13.
The embryo of the domestic fowl (Gallus domesticus) tenders one distinctive advantage over general mammalian models for investigating the development of the hypothalamo–pituitary–adrenocortical (HPA) axis. This is the relative simplicity with which the embryonic endocrine environment can be influenced without confounding maternal influences. The ease of direct manipulation of the embryonic endocrine system has facilitated analysis of the development and function of the HPA axis in the chick embryo. As the chick embryo develops, functional activation of the adrenal gland is regulated at three different levels: the adrenal gland itself, the anterior pituitary, and the hypothalamus. The adrenal gland appears capable of independent secretion of glucocorticoids from day 8 until shortly after day 14 of embryonic development, at which point the pituitary influences adrenocortical activity. Around the same age, the hypothalamic level of control also begins. The information covered in this review will describe the major steps in the development of the HPA axis in the chicken embryo and show that the chicken has an emblematic HPA neuroendocrine axis. 相似文献
14.
Tohei A 《The Journal of reproduction and development》2004,50(1):9-20
In order to clarify the functional relationship between thyroid, adrenal and gonadal hormones, hypothyroidism was induced by administration of thiuoracil in adult male and female rats, and the effects of hypothyroidism on the adrenal and the gonadal axes were investigated in the present study. 1. The functional relationship between thyroid and adrenal hormones: Adrenal weights and corticosterone were lowered, whereas the secretion of ACTH, corticotrophin-releasing hormone (CRH) and arginine vasopressin (AVP) increased in hypothyroid rats compared to euthyroid rats. These results indicate that hypothyroidism causes adrenal dysfunction directly and results in hypersecretion of CRH and AVP from the hypothalamus. 2. The functional relationship between thyroid and gonadal hormones: The pituitary response to LHRH was lowered, whereas the testicular response to hCG was not changed in hypothyroid rats. Hypothyroidism suppressed copulatory behavior in male rats. These results suggest that hypothyroidism probably causes dysfunction in gonadal axis at the hypothalamic-pituitary level in male rats. In adult female rats, hypothyroidism inhibited the follicular development accompanied estradiol secretion, whereas plasma concentrations of progesterone and prolactin (PRL) increased in hypothyroid female rats. Hypothyroidism significantly increased the pituitary content of vasoactive intestinal peptide (VIP) though it did not affect dopamine synthesis. These results suggest that hypothyroidism increases pituitary content of VIP and this increased level of VIP likely affects PRL secretion in a paracrine or autocrine manner. In female rats, inhibition of gonadal function in hypothyroid rats mediated by hyperprolactinemia in addition to hypersecretion of endogenous CRH. 相似文献
15.
Taoda T Hara Y Takekoshi S Itoh J Teramoto A Osamura RY Tagawa M 《American journal of veterinary research》2006,67(8):1385-1394
OBJECTIVE: To evaluate the effects of mitotane administration on the function and morphology of pituitary corticotrophs in clinically normal dogs. ANIMALS: 12 clinically normal adult Beagles. PROCEDURES: Dogs were randomly assigned to the control group or the mitotane treatment group. In mitotane treatment group dogs, mitotane was administered for 1 month. In both groups, ACTH stimulation testing and corticotrophin-releasing hormone (CRH) stimulation testing were performed. Magnetic resonance imaging (MRI) of the pituitary gland and brain was performed in mitotane treatment group dogs before and after administration of mitotane. After CRH stimulation testing and MRI, dogs were euthanatized and the pituitary gland and adrenal glands were excised for gross and histologic examination. RESULTS: ACTH concentrations in mitotane treatment group dogs were significantly higher than in the control group dogs following CRH stimulation. Magnetic resonance imaging revealed that pituitary glands were significantly larger in treatment group dogs after administration of mitotane, compared with before administration. On gross and histologic examinations, the adrenal cortex was markedly atrophied. Immunohistochemistry revealed hypertrophy of corticotrophs in pituitary glands of mitotane treatment group dogs. CONCLUSIONS AND CLINICAL RELEVANCE: These findings indicate that inhibition of the adrenal cortex by continuous administration of mitotane leads to functional amplification and morphologic enhancement of corticotrophs in clinically normal dogs. In instances of corticotroph adenoma, hypertrophy of individual corticotrophs induced by mitotane may greatly facilitate enlargement of the pituitary gland and increases in ACTH secretion. 相似文献
16.
采食是动物维持生命活动的基本生理过程，是动物生长发育的基础。畜禽采食量的高低直接影响到营养物质的摄入量及生产性能的发挥。在畜牧业生产中，影响采食的因素很多，而应激是其中一个非常重要的影响因素。动物机体的应激反应主要由下丘脑-垂体-肾上腺（HPA）轴来调控。下丘脑、垂体和肾上腺皮质通过释放促肾上腺皮质激素释放激素（CRH）、促肾上腺皮质激素（ACTH）和糖皮质激素（GC）这3种应激激素来协同调控动物的应激反应。应激激素对采食行为的调节是一个非常复杂的过程，主要通过稳态和非稳态途径来调节采食，可以双向调控食物的摄入量。稳态途径指的是通过调控机体能量稳态而调控采食。CRH和ACTH通过抑制下丘脑促食欲肽的表达而抑制采食；而GC在中枢和外周发挥着完全相反的作用。非稳态途径指的是通过影响中脑奖赏系统调控采食的愉悦感，是近年来食欲调控研究的热点，越来越多的研究证明了应激激素与奖赏系统的联系。作者针对应激激素调控采食的最新研究报道进行综述，以期为生产实践中新型的采食调控技术研发提供一定的参考。 相似文献
17.
Sari DK Kuwahara S Furuya M Tsukamoto Y Hori H Kunugita N Arashidani K Fujimaki H Sasaki F 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2005,67(3):303-309
We studied the change in the hypothalamo-pituitary-adrenal gland (HPA) axis upon adding prior toluene inhalation to our previous formaldehyde inhalation experiments to determine whether short term exposure to relatively high levels of toluene triggers multiple chemical sensitivity (MCS). Data come from immunocytochemical, morphometrical and RT-PCR measurements. Four groups of adult female mice were exposed to differing concentrations (0, 80, 400, and 2,000 ppb) of formaldehyde for 16 hr/day, 5 days/week for twelve weeks, after the mice were exposed intranasally to 500 ppm toluene per mouse for 6 hr/day, for 3 days. We found that the number of corticotropin releasing hormone (CRH)-immunoreactive (ir) neurons was up-regulated according to the amount of formaldehyde as well as inhalation of formaldehyde alone in our previous experiment. The proportion of adrenocorticotropin hormone (ACTH)-ir cells increased according to the formaldehyde concentration, though there was no significant difference between the 400 and 2,000 groups. The number of ACTH-ir cells was higher in the 400 group than in the other groups (0, 80, and 2,000). Expression of ACTH-mRNA was also up-regulated according to the quantity of formaldehyde. The sinusoid in the anterior pituitary showed more dilatation in the 400 and 2,000 groups than in the control group, especially in the 2,000 group. We propose that exposure to toluene prior to inhalation of formaldehyde has no effect on the HPA axis and as a trigger of MCS, although greater sinusoid dilatation was found in the anterior pituitary gland at higher concentrations of formaldehyde. 相似文献
18.
Aoyama M Negishi A Abe A Yokoyama R Ichimaru T Sugita S 《Veterinary journal (London, England : 1997)》2008,177(1):116-123
This study investigated the effects of an intracerebroventricular (ICV) injection of corticotropin releasing hormone (CRH) on physiological and behavioural responses in goats. In Experiment 1, saline (control) or saline plus 25 microg of ovine CRH was injected into the third ventricle of castrated male goats. CRH increased plasma cortisol (Cor) levels markedly within 15 min, but had little effect on plasma glucose (Glu). Compared with saline injected goats, CRH decreased the total duration of lying behaviour but increased its frequency, and suppressed rumination and self-grooming. In Experiment 2, the effects of an intravenous (IV) injection of human adrenocorticotropic hormone (ACTH) (1-24) (0.1mg) were examined and an IV injection of saline was used as control. ACTH increased plasma Cor levels markedly, but did not change any behaviour compared with controls. It was concluded that CRH mediated the response of the hypothalamus-pituitary-adrenal (HPA) axis and behaviour following stress in goats, although the CRH-induced behavioural changes were independent of the HPA axis and seemed to be the result of direct action within the central nervous system. 相似文献
19.
E. Terenina B.M. Babigumira G. Le Mignon D. Bazovkina S. Rousseau F. Salin C. Bendixen P. Mormede 《Domestic animal endocrinology》2013
The hypothalamic-pituitary-adrenal (HPA) axis exerts a large range of effects on metabolism, the immune system, inflammatory processes, and brain functions. Together with the sympathetic nervous system, it is also the most important stress-responsive neuroendocrine system. Both systems influence production traits, carcass composition, and meat quality. The HPA axis may be a critical target for genetic selection of more robust animals. Indeed, numerous studies in various species have demonstrated the importance of genetic factors in shaping the individual HPA axis phenotype, and genetic polymorphism can be found at each level of the axis, including hormone production by the adrenal cortices under stimulation by adrenocorticotropic hormone (ACTH), hormone bioavailability, or receptor and postreceptor mechanisms. The aim of the present experiment was to extend these findings to the brain neurochemical systems involved in stress responses. To this end, a number of candidate genes were sequenced for molecular polymorphisms and their association was studied with stress neuroendocrine and production traits in a genetically diverse population consisting of 100 female pigs from an advanced intercross (F10-F12) between 2 highly divergent breeds, Large White (LW) and Meishan (MS). The LW breed has a high production potential for lean meat and a low HPA axis activity, and the MS breed has low growth rate, fat carcasses—but large litters of highly viable piglets—and a high HPA axis activity. Candidate genes were chosen in the catecholaminergic and serotonergic pathways, in the pituitary control of cortisol production, among genes previously demonstrated to be differentially expressed in ACTH-stimulated adrenal glands from LW and MS pigs, and in cortisol receptors. Sixty new polymorphisms were found. The association study with carcass and meat quality traits and with endocrine traits showed a number of significant results, such as monoamine oxidase (MAOA) polymorphisms with growth rate (P = 0.01); lean content and intramuscular fat (P < 0.01), which are the most important traits for carcass value; dopamine receptor D3 (DRD3) with carcass composition (P < 0.05); and vasopressin receptor 1B (AVPR1B) with meat quality traits (P ≤ 0.05). The effect of these polymorphisms on neuroendocrine parameters (eg DRD3 and HPA axis or AVPR1B and catecholamines) indicates information regarding their biological mechanism of action. 相似文献