Intraocular grafting of cultured brain tissue: growth, vascularization and neuron survival in locus coeruleus and cortex cerebri

Locus coeruleus and cortex cerebri from embryonic (ED 17) and newborn rats were kept 4 days in tissue culture under conditions maintaining organotypic features and then transplanted to the anterior chamber of the eye of adult rats. Vascularization from the host iris was delayed in pre-cultured grafts as compared to directly grafted material. In spite of this, several morphological parameters developed normally. Thus, pre-cultured grafts grew considerably in oculo. Falck-Hillarp histochemistry showed that grafts of cortex cerebri received an adrenergic innervation from the host iris and that locus coeruleus grafts contained central adrenergic neurons capable of innervating a sympathetically denervated host iris. The successful combination of tissue culture and intraocular transplantation should permit the selective advantages of both techniques to be applied to the same tissue pieces, generating new information unobtainable by either method alone.     

Dynamics of some indices of blood clotting after intraperitoneal injection of thrombin into noninbred albino rats

The possibility of giving thrombin by intraperitoneal injection as a test of the function of the blood clotting system (the in vivo thrombin test) was demonstrated in experiments on noninbred albino rats.Department of Biochemistry, Tyumen' Medical Institute. (Presented by Academician of the Academy of Medical Sciences of the USSR N. A. Fedorov.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 86, No. 12, pp. 675–677, December, 1978.     

Oocyte and embryo quality as well as pregnancy rate in intracytoplasmic sperm injection are not affected by high follicular phase serum progesterone

The effect of elevated serum progesterone concentrations (>1ng/1) on or before the day of human chorionic gonadotrophin(HCG) injection on the outcome of women receiving gonadotrophin-releasinghormone analogue (GnRHa)/ human menopausal gonadotrophin (HMG)for ovarian stimulation prior to intracytoplasmic sperm injection(ICSI) was evaluated. A total of 1275 ICSI cycles were analysedretrospectively. In 53 cycles (4.5%), serum progesterone concentrationswere > 1 ng/ml. Patients in the high progesterone group hadsignificantly higher oestradiol and luteinizing hormone concentrationson the day of HCG injection. The characteristics of the cumulus-coronacell complexes and the nuclear maturity of the oocytes weresimilar in the groups of patients with high and low serum progesteronelevels. Fertilization and cleavage rates as well as embryo qualitywere not different in the two groups. No difference in implantationor clinical pregnancy rates was observed between the high progesteroneand low progesterone groups. Moreover, the cumulative exposureto progesterone during the follicular phase, as expressed bythe area under the curve (AUC), and the duration of exposureto high serum progesterone levels (>1 ng/ml) were not significantlydifferent between pregnant and non-pregnant women in the highprogesterone group. We conclude that in ICSI cycles pretreatedwith GnRHa, increased serum progesterone concentrations on orbefore the day of HCG injection do not affect ICSI outcome.     

Desensitization to substance P following intrathecal injection

Summary The intrathecal injection of substance P (SP) (2.5–15 g) has been shown to produce hyperalgesia in the rat tail flick test. Repeated injection of SP (7.5 or 15 g) or pretreatment with two of these doses produces desensitization to this hyperalgesic response. Desensitization is doserelated with respect to degree and duration. This phenomenon is relatively specific because the hyperalgesic response to methysergide, a serotonin receptor antagonist, is unaffected, while that produced by phentolamine, an adrenergic receptor antagonist, is much less affected than that of SP. Pretreatment with a desensitizing regimen of SP potentiates the antinociceptive effect of morphine and baclofen when they are tested immediately after the regimen but if a 30 min delay is permitted, an inhibition of their effects is observed. These results support the notion that the spinal antinociceptive effect of morphine and baclofen is due to an interaction with SP mechanisms in the spinal cord, the nature of which may be more complex than is presently understood. Desensitization produces no change in baseline responsiveness in the tail flick test. This suggests that the hyperalgesic response to SP is due either to an action at a site other than the primary afferent synapse, or if it is at this site either compensatory mechanisms occur or SP is not the primary determinant of tail flick latency but may play a modulatory role.     

The extended use of the transverse abdominal skin (tras) flap,anatomical and clinical considerations

Summary The transverse thoraco-abdominal skin flap, originally described by Baroudi et al. [1], was used for closure of postmastectomy chest defects after radical mastectomy. Some modifications to the original flap have been made which add to its reliability. These mainly consist of the preservation of musculo-cutaneous perforators on both the ipsi- and contralateral sides of the pedicle, and leaving the umbilicus intact. This flap may also be used for reconstruction of groin defects. The blood supply to the TRAS flap was investigated in six fresh cadavers. Following the raising of six TRAS flaps the contralateral superior and inferior deep epigastric arteries (epigastric arcade) were cannulated and injected with microfil. The flap specimens including their pedicles were then detached and x-rayed by mammography. Complete filling of the medial half of the flaps was observed in most of the specimens indicating anastomosis of blood vessels across the midline. Since the contralateral penetration of the microfil was not observed in larger blood vessels, it is assumed that the musculo-cutaneous perforators are the main conduit for this blood supply. Beyond the reach of the contrast material the flap borrows its vasculature from the pre-existent subcutaneous network on the random flap principle. Three case reports are presented, in which one supra-and two infra-umbilical TRAS flaps were employed.     

外置注入式婴儿培养箱消毒装置的实现原理及设计

该研究首先阐述了婴儿培养箱消毒的重要性,然后从臭氧的消毒机理展开讨论,根据婴儿培养箱的结构特点和臭氧消毒的优势,结合临床应用得到臭氧消毒的实现原理,提出一种外置注入式婴儿培养箱消毒装置的设计方法。该设计通过在婴儿培养箱箱体外安装一套消毒装置,利用该装置中的电子臭氧发生器现场制取臭氧消毒气体,经输气管将臭氧消毒气体注入婴儿培养箱箱体内,在一定浓度和时间的作用下达到消毒的目的,为婴儿培养箱消毒提供了一套安全有效、简单实用的臭氧消毒方法,且该消毒装置具有设计合理、创意新颖、制作简单、操作方便,以及消毒无死角、无二次残留污染等优点。     

重组人p53腺病毒注射液联合顺铂与紫杉醇治疗晚期宫颈癌的疗效及安全性分析

目的探讨重组人p53腺病毒注射液联合顺铂与紫杉醇治疗晚期宫颈癌的疗效及安全性。方法 80例晚期宫颈癌患者随机分为两组各40例,对照组给予顺铂与紫杉醇治疗,研究组在对照组基础上给予重组人p53腺病毒注射液治疗。比较两组的治疗效果、不良反应以及复发率、转移率、死亡率。结果研究组的治疗总有效率高于对照组,1年内病死率、复发率及转移率均低于对照组(P <0.05)。两组的不良反应发生率比较,差异无统计学意义(P>0.05)。结论重组人p53腺病毒注射液联合顺铂与紫杉醇治疗晚期宫颈癌患者的疗效显著,安全性高,能够有效减少近期死亡、复发及转移。     

强化护理在儿童急性白血病鞘内注射中的应用效果

目的探讨强化护理在儿童急性白血病鞘内注射治疗中的应用效果。方法选取2019年5月至2020年6月于中国科学技术大学附属第一医院西区行鞘内注射治疗的90例急性白血病患儿作为研究对象,按照入院时间将其分为A组(45例)与B组(45例)。A组采用常规护理方法,B组采用强化护理方法。比较两组的不良反应发生情况、家长满意度、护理质量。结果B组不良反应发生率低于A组,差异有统计学意义(P<0.05);B组家长总满意度高于A组,差异有统计学意义(P<0.05);B组护理质量高于A组,差异有统计学意义(P<0.05)。结论采用强化护理模式可缓解患儿鞘内注射治疗不良反应,减轻患儿痛苦,促进治疗顺利完成,提高家长满意度,改善护理质量,应用效果较好。     

KMG03粉针剂对大鼠实验性急性心肌缺血的保护作用

采用结扎大鼠冠脉造成急性心肌缺血模型。观察KMG03粉针剂的抗心肌缺血作用。结果：KMG03粉针剂50mg/kg和100mg/kg对大鼠实验性急性心肌缺血均有一定程度的保护作用。在改善心电图S——T段的上移、降低血清CPK,LDH方法两个剂量组均有显著作用。在缩小心肌塞范围方面,以100mg/kg组为明显,KMG03粉针剂和丹参均能保护超氧化物岐化酶活性,显著降低丙二醛含量,还能显著增加缺血心肌前列环素合成。结果表明：KMG03粉针剂对心肌缺血的保护作用与抗脂质过氧化作用有关,其促进前列环素合成作用可能与其抗心肌缺血有关。     

雷尼替丁与复方丹参联合治疗急性胰腺炎35例疗效分析

目的：观察雷尼替丁与复方丹参联合治疗急性胰腺炎的疗效。方法：对确诊急性胰腺炎65例随机分成治疗组35例,对照组30例,分别用常规治疗,常规治疗加雷尼替丁与复方丹参静滴,连用4－7天,评价其疗效。结果：治疗组与对照组显效率分别为85.71%、43.3%,两组差异显著,P＜0.05。结论：两药联合应用不仅可减轻本病的炎症病变,且可改善心肌细胞营养状况。