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为研究利福昔明子宫注入剂的稳定性,从而初步确定其保质期,本试验取3批利福昔明子宫注入剂进行稳定性试验考察,包括影响因素、高温加速及长期稳定性,利用高效液相色谱法测定试验过程中利福昔明含量及有关物质的含量,从而初步确定利福昔明子宫注入剂的保质期。根据相关技术指导原则对家兔进行阴道刺激性试验。稳定性试验结果表明,根据面积归一化法计算有关物质的含量均不超过3%,注入剂的性状、沉降、粒度未发生明显变化,主成分利福昔明的含量变化在拟定标示量90.0%～110.0%范围内,从而确定本品的有效期为2年。家兔阴道刺激性试验结果显示,利福昔明子宫注入剂给药部位(阴道)和生理盐水对照组给药部位都没有出现红斑和水肿,刺激强度的评分为0;试验组和对照组的阴道黏膜没有出现明显的充血、水肿及异常分泌物流出的现象,阴道黏膜刺激指数为0.25。因此,利福昔明子宫注入剂对家兔的阴道无刺激性。本品的临床安全性良好,可进一步推广使用。 相似文献
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应用全身过敏性、皮肤刺激性、黏膜刺激性和乳腺刺激性试验,评定了利福昔明混悬乳剂的安全性。结果表明,致敏试验豚鼠均未出现过敏性反应。在皮肤刺激性试验中,单次敷药组家兔皮肤均未见异常变化,多次敷药组虽有1只试验兔皮肤出现了短暂性轻微红斑,但皮肤刺激反应积分平均值仅为0.2。在黏膜刺激性试验中,受试药物组有1只试验兔的阴道黏膜出现轻微的充血现象,阴道黏膜刺激反应积分平均值为0.2。乳腺刺激性试验羊乳房未见异常症状,乳腺组织未见充血、水肿和白细胞浸润等病理变化。综合评价试验结果表明,利福昔明混悬乳剂是一种安全性良好的制剂。 相似文献
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利福昔明乳房注入剂对小鼠的急性毒性试验 《畜牧与饲料科学》2016,37(5):49-49
为评估利福昔明乳房注入剂的急性毒性,采用标准的急性毒性试验方法进行了利福昔明乳房注入剂对小鼠的急性毒性试验。结果表明,最高组剂量达到5 000 mg/（kg·BW）时,小鼠未见不良反应,饮食活动正常,观察期内均未出现死亡,即利福昔明乳房注入剂对小鼠经口灌胃的LD50大于5 000 mg/（kg·BW）,属于实际无毒级物质。 相似文献
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本试验旨在建立利福昔明有关物质的检测方法。采用反相高效液相色谱法,紫外检测器进行检测,采用WondaSil C18-WR 250 mm×4.6 mm 5 μm色谱柱,柱温:40 ℃,流动相及其比例为:V（甲醇） ∶V（乙腈）∶V（3.16 g/L甲酸铵,浓氨水调pH至7.2）=31.5∶31.5∶37,检测波长276 nm。采用面积归一化法计算利福昔明子宫注入剂的检测限、定量限及其浓度;考察了方法精密度、线性相关性及有关物质专属性,并通过极端条件的破坏、有关物质的含量、分离度等对主成分峰面积降解程度进行了比较。利福昔明子宫注入剂主成分峰在浓度为40~150 μg/mL的范围内,峰面积与浓度呈现良好的线性关系（R2=0.9998）,其有关物质浓度对峰面积线性回归方程为y=23 510x+7 182,其进样精密度RSD为0.13%,方法精密度RSD为0.46%,制剂一定时间内经过强酸、强碱、氧化、高温条件破坏后均有不同程度降解,以破坏前的样品主成分含量为100.00%,氧化破坏和高温破坏主成分降解达13%,酸、碱破坏主成分降解在18%左右,主成分峰保留时间在以上4种条件破坏前后一致,且主成分峰与杂质峰之间及杂质峰与杂质峰之间分离度良好（主成分峰与杂质峰之间分离度均大于1.5,杂质峰与杂质峰之间分离度均大于1.2）。本试验建立的利福昔明子宫注入剂有关物质检测方法操作简便,专属性和重复性好,可适用于利福昔明子宫注入剂有关物质的测定。 相似文献
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《中兽医医药杂志》2017,(3)
为进一步验证不同生产工艺醋酸氯己定栓的安全性,对其进行家兔阴道刺激性试验。选取新西兰白兔40只,随机分成4组,每组10只,阴道给予醋酸氯己定栓,1次/d,连续7 d,观察家兔外阴部水肿和分泌物情况及阴道黏膜刺激性反应强度,并制作阴道黏膜病理组织切片进行病理学观察,对不同生产工艺醋酸氯己定栓的安全性进行评价。结果表明,第1组对家兔阴道组织有轻度刺激,组织病理学观察阴道黏膜有轻度刺激;第2组对家兔阴道组织刺激性无刺激,组织病理学观察阴道黏膜有中度刺激;第3组对家兔阴道组织有轻度刺激,组织病理学观察阴道黏膜有重度刺激;第4组对家兔阴道组织有重度刺激,组织病理学观察阴道黏膜有重度刺激。 相似文献
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本文旨在评价子宫灌洗剂宫得健的安全性.方法采用急性毒性试验、最大耐受量试验、眼球刺激性试验、阴道黏膜刺激性试验、全身过敏性试验进行动物实验研究.结果急性毒性试验未测出LD50,小鼠对宫得健灌洗剂的最大耐受量大于40 g/kg;宫得健对家兔眼结膜和豚鼠阴道黏膜无刺激性,未引起阴道黏膜病理组织学变化;对豚鼠无致敏作用.结论宫得健灌洗剂安全,可供子宫灌洗用. 相似文献
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本文旨在评价子宫灌洗剂宫得健的安全性。方法：采用急性毒性试验、最大耐受量试验、眼球刺激性试验、阴道黏膜刺激性试验、全身过敏性试验进行动物实验研究。结果：急性毒性试验未测出LD50，小鼠对宫得健灌洗剂的最大耐受量大于40g/kg；宫得健对家兔眼结膜和豚鼠阴道黏膜无刺激性，未引起阴道黏膜病理组织学变化；对豚鼠无致敏作用。结论：宫得健灌洗剂安全，可供子宫灌洗用。 相似文献
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利福昔明子宫注入剂含量测定及方法耐用性试验研究 总被引：2，自引：0，他引：2
建立了利福昔明子宫注入剂HPLC含量测定方法,并对色谱测定条件进行了不同检测波长、流速及柱温等条件的耐用性研究。乙腈提取,超声离心后,经流动相稀释上机检测。结果显示,研究建立的利福昔明子宫注入剂含量测定方法在40~150μg/mL浓度范围内线性关系良好(r=0.9995),检测限(LOD)为0.25μg/mL,定量限(LOQ)为0.6μg/mL。以80、100、120μg/mL三个浓度水平进行添加回收,回收率在98.26%~101.12%之间,日内变异系数在0.17%~1.13%之间,日间变异系数0.73%。耐用性研究表明,在测试范围内,检测波长、流速、柱温对含量测定无明显影响(RSD2.0%)。三批制剂样品经测定后,含量分别为102.0%、99.8%、100.6%。本研究建立的利福昔明子宫注入剂含量方法操作简便、方法可靠,可用作该制剂的质量控制。 相似文献
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庆大霉素和林可霉素注射液的毒理学试验研究 总被引：1，自引：0，他引：1
为对庆大霉素和林可霉素注射液的安全性进行毒理学评价,采用急性毒性试验、溶血试验、局部血管刺激性试验、肌肉及皮肤刺激试验及豚鼠全身用药的过敏试验,考察庆大霉素和林可霉素注射液制剂的安全性。结果表明,庆大霉素和林可霉素注射液对小鼠肌肉注射的LD50为4.989 mL/kg,0.1~0.5 mL该注射液在4 h内对兔红细胞不产生溶血和凝聚作用;静脉注射部位血管及周围组织均未见充血、水肿、出血和坏死等病理改变,肌肉注射部位充血范围在0.5 cm×1.0 cm以下,4块股四头肌反应级的最高与最低之差等于0,家兔四块股四头肌反应级之和小于10;以相当于临床用量2倍的剂量涂抹皮肤,停药后1、24、48、72 h镜下观察均未见明显异常的病理变化;豚鼠首次致敏后第14天及第21天静脉注射液攻击,在观察期内未见过敏反应。表明庆大霉素和林可霉素注射液在该试验条件下是安全的。 相似文献
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Pfister P Geissbuehler U Wiener D Hirsbrunner G Kaufmann C 《The Veterinary quarterly》2007,29(3):112-116
Pollakisuria in adult goats can be caused by diseases of the urinary tract and by distension of parts of the genital tract leading to irritation of the bladder. Hydrometra is the most common cause of uterine distension in goats and usually can be resolved by prostaglandin injections. But other pathologies of the uterus can generate a similar syndrome. A dwarf goat was presented at the clinic with a history of chronic pollakisuria and tenesm. An initial ultrasonographic examination of the abdomen led to the suspicion of hydrometra, but treatment with injections of prostaglandin were not successful. Blood samples revealed low progesterone and high oestrogen values. A laparotomy was performed and an enlarged uterus with 1.5 L of mucous content and cystic ovaries were found and partially removed. A single solid leiomyoma was diagnosed histologically in the uterine wall. Two months later the goat's condition had deteriorated and therefore she was euthanized. Necropsy and pathohistological examination revealed the presence of a metastasized adenocarcinoma of the uterus. In this case, the pollakisuria provoqued by distension of the uterus was not caused by hydrometra, but by neoplasia. The syndrome and the pathogenesis of the adenocarcinoma in consideration of the hormonal status of the patient is discussed. 相似文献
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The study was aimed to establish a method for detection of rifaximin related substances by reversed-phase high-performance liquid chromatography with UV detector. The instrument methods was WondaSil C18-WR 250 mm×4.6 mm 5 μm column, mobile phase was methanol∶acetonitrile∶3.16 g/L ammonium formate (concentrated aqueous ammonia adjusted to pH 7.2)=31.5∶31.5∶37, with detection wavelength 276 nm. Area normalization method was used to calculate the limit of detection, limit of quantification and concentration of rifaximin uterine injectant; The precision of the method, linear correlation and related substances specificity were explored. And the degradation degree of the peak area of the principal components was compared by the destruction of the extreme conditions, the content of the related substances and the separation degree. 40 to 150 μg/mL concentration of rifaximin, peak area and concentration showed a good linear relationship (R2=0.9998), the related substances concentration on peak area linear regression equation was y=23 510x+7 182, within a certain period of time after preparation of acids, alkalis, oxidation, high temperature degradation damage in varying degrees, in the main ingredient content in the sample before the damage was 100.00%, after oxidative damage and heat damage the main component was 13%, acids, alkalis destruction of the main component degradation was about 18%, the main component peak retention time was consistency before and after the destruction. The retention time and resolution of rifaximin and related-substance were good. (The separation between the main component peak and the impurity peaks were greater than 1.5, the degree of separation between the impurity peak and impurity peaks greater than 1.2). The substance detection methods of rifaximin uterine injectants was simple and had specificity and good repeatability, selective and sensitive, which could be used to analyze the related substance of rifaximin uterine injectants. 相似文献
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研究采用大体解剖法、石蜡切片法、HE染色法等对20只产蛋期的皖西白鹅母鹅生殖系统的形态结构和组织结构进行了观察,结果如下:皖西白鹅母鹅的生殖系统包括卵巢和输卵管两部分,仅左侧发育正常,右侧早已退化,卵巢表面被覆生殖上皮,下方是白膜,其实质由皮质和髓质组成,皮质内含有不同发育阶段的卵泡和萎缩卵泡,大卵泡突出了卵巢表面,卵泡无卵泡腔,也无卵泡液,排卵后不形成黄体。输卵管分为漏斗部、蛋白分泌部、峡部、子宫部和阴道部5个部分,各段均由黏膜层、肌层和外膜构成,黏膜上皮有纤毛,固有层内有腺体和淋巴组织,无黏膜肌层,肌层由内环外纵两层平滑肌组成,外膜为浆膜。 相似文献
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The soybean phytoestrogen genistein has a range of estrogenic actions demonstrated in various species; however, only limited research has been done to investigate its effects in swine. The objective of this study was to characterize the effects of a graded dose of genistein on estrogen-sensitive uterine and cervical tissues in ovariectomized gilts. Thirty-four postpubertal gilts were ovariectomized and assigned randomly to 1 of 6 treatment groups 15 d postovariectomy. Treatment groups received vehicle, estradiol benzoate (2 mg/d), or genistein (50, 100, 200, or 400 mg/d) via intramuscular injection at 12-h intervals for 10 d. Following the treatment period, gilts were euthanized, and uterine and cervical tissues were collected and processed for chemical or histological analysis. Uterine and cervical tissue mass, as indicated by wet, dry, and protein weights and total DNA content (expressed per 100 kg of BW), increased as the dosage of genistein increased (P < 0.001 for each regression). Uterine and cervical wet weights were increased by a dosage of 200 mg of genistein/d (P < 0.001 and P < 0.01, respectively) but not by 100 mg of genistein/d (P = 0.38 and P = 0.14, respectively) compared with those of control gilts. Height of epithelial cells lining the uterine glands and the lumen of uterus and cervix increased when gilts were treated with estradiol benzoate or 400 mg of genistein/d (P < 0.01). When the gilts were treated with estradiol benzoate or 400 mg of genistein/d, immunohistochemical staining demonstrated an increase in the percentage of cells that stained positive for progesterone receptor in the uterine glands and in the cells lining the vaginal cervix (P < 0.05). In gilts treated with 400 mg of genistein/d, the percentage of cells stained positive for proliferating cell nuclear antigen increased in the epithelium of the uterine glands, uterine lumen, and vaginal cervix (P < 0.05). Tissue growth was stimulated by genistein in a dosage-dependent manner, although no dosage of genistein induced a response as great as that of estradiol benzoate. Estrogen-sensitive tissues of the ovariectomized gilt, such as the cervix and uterus, are affected by injection of large dosages of the phytoestrogen genistein. The sensitivity of the uterus of the gilt to estrogenic substances makes it a potential model to examine the impact of environmental endocrine modulators on reproductive tissues. 相似文献
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Lezmi S Thibault-Duprey K Bidaut A Hardy P Pino M Macary GS Barbellion S Brunel P Dorchies O Clifford C Leconte I 《Veterinary pathology》2011,48(5):964-969
Recently, 6% of 1,176 Sprague Dawley rats examined in our reproductive toxicity studies presented with dark-red uterine contents with or without fetuses demonstrating delayed development. Sometimes, a high proportion of the litter was found dead, and dystocia with death or preterminal euthanasia of the dam occurred. Microscopic findings in the uterus consisted of necrohemorrhagic and suppurative periplacentitis associated with the presence of bacterial colonies identified as Escherichia coli. In the vagina, similar findings were observed that were associated with mucus accumulation and the presence of a transverse occlusive or partially occlusive thin membrane identified as a vaginal septum. Microscopically, this septum consisted of a thin band of connective tissue covered on both sides by a mucous epithelium that was continuous with vaginal epithelium. In some cases, there was only mucus accumulation retained by a septum in the vagina without evidence of bacterial infection. Serological and histological examinations did not reveal any specific pathogenic agent. The presence of these septa in the vagina most likely favored mucus accumulation, nonspecific ascending bacterial infection, and dystocia. This colony of rats presented with an unusually high incidence of vaginal septa as it was described in different strains of mice and rats in the past. We hypothesized that the use of an impedance meter by the breeder--to determine the phase of the estrous cycle by introducing a probe in the vagina--likely facilitated gestation by perforating the vaginal septum in some cases. 相似文献
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E. Bigliardi F. Di Ianni E. Parmigiani A. M. Cantoni C. Bresciani 《The Journal of small animal practice》2014,55(4):235-237
A five‐year‐old female cat weighing 3 kg was presented by the owner after noticing a large pink, bilobed mass protruding through the vulva during labour. The cat was in good condition, with appropriate lactation, and the newborn kittens were nursing normally. The uterus was not reverted or invaginated at examination, and there was rupture of the mesovarium, mesometrium and uterine‐vaginal connection around the cervix. Manual reduction of the prolapsed uterus was not possible because of torn ligaments. A coeliotomy was performed to remove the ovaries, and the apex of the uterine horns was passed by the vaginal route. The remaining part of the mesometrium was disconnected, and the prolapsed uterus was removed. The queen and kittens were discharged from the hospital on the second day after surgery. An unusual feature of this case is that the prolapse was complete, without eversion of any part of the uterus through a vaginal tear. 相似文献
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旨在制备复方利福昔明纳米乳,并对其理化性质进行评价。以纳米乳的载药量、稳定性为考查指标,筛选油相、表面活性剂、助表面活性剂;绘制伪三元相图确定最佳配方;利用透射电子显微镜、激光粒度测定仪考查其微观形态和粒径,采用染色法鉴别纳米乳的类型;经光照试验、温度试验、高速离心试验考查纳米乳的稳定性。结果表明,复方利福昔明纳米乳的最佳配方为利福昔明1%、肉桂醛2.44%、聚乙二醇-2004.88%、聚氧乙烯醚-40-蓖麻油19.51%、蒸馏水72.17%;复方利福昔明纳米乳为水包油型(O/W),可以无限稀释;在透射电镜下观察,纳米乳呈圆球形,无粘连,平均粒径为11.8nm;光照试验、温度试验、长期试验显示,纳米乳稳定性良好。复方利福昔明纳米乳制备方法简单,质量可控,为利福昔明广泛应用于畜禽肠道细菌感染的治疗提供了理论依据。 相似文献