神经干细胞移植对HIBD新生大鼠学习记忆的影响

目的：探讨脑内移植胚鼠神经干细胞 (NSCs)对新生大鼠缺氧缺血性脑损伤(HIBD)后学习记忆的影响。 方法： 分离孕龄14 d的Sprague-Dawley（SD）大鼠胚胎前脑皮质，采用无血清悬浮培养的方法获得细胞克隆；7 d龄新生大鼠随机分为假手术组（n=10）、HIBD组（n=11）和移植组（n=13），后两组结扎左侧颈总动脉联合8%氧吸入制作HIBD模型，损伤后3 d利用立体定位仪分别在左侧海马区植入培养基作为对照或BrdU 标记的NSCs，观察植入4 周后大鼠学习记忆功能的恢复情况。计数海马CA1区正常神经元，间接免疫荧光法观察移植细胞在脑内的存活、迁移情况。 结果： 在放射形迷宫测试中，移植组较对照组表现出明显的改善，觅水时间缩短(61.40 s±24.83 s vs 89.32 s±31.52 s)，错误次数（2.65±0.57 vs 3.78±0.41）及重复次数明显减少(0.32±0.43 vs 0.81±0.47)(P<0.05)。BrdU间接免疫荧光显示移植后4周，在脑内可见存活的NSCs在海马内广泛分布；尼氏染色显示移植可明显减少海马CA1区的细胞丢失。 结论： 脑内移植胚鼠NSCs对HIBD新生大鼠的学习记忆恢复有良好的促进作用。     

局灶性脑缺血后老年大鼠室管膜下区和颗粒下层细胞增殖与分化的实验研究

目的观察老年大鼠局灶性脑缺血后室管膜下区（SVZ）和颗粒下层（SGZ）神经干细胞的增殖与分化.方法取老年大鼠制作大脑中动脉梗塞模型.用5-溴脱氧尿核苷（BrdU）脉冲标记结合免疫组织化学单标记技术,观察正常组、假手术组、脑缺血后3、7、14、21、28 d组SVZ和SGZ区BrdU阳性细胞的变化;用BrdU累积标记结合免疫组织化学双标技术,观察脑缺血14 d后SVZ和SGZ区BrdU/NeuN和BrdU/GFAP双标阳性细胞的数量.结果在正常组、假手术组及各脑缺血组大鼠的双侧SVZ和SGZ均可观察到BrdU阳性细胞.与正常组和假手术组相比,脑缺血后SVZ和SGZ区BrdU阳性细胞明显增加.缺血组SVZ区BrdU阳性细胞在脑缺血后7 d时达到高峰,28 d时仍高于正常水平;SGZ区BrdU阳性细胞在脑缺血后14 d时达到高峰,28 d时仍高于正常水平.通过BrdU累积标记和免疫组织化学双标发现：脑缺血14 d后,老年大鼠SVZ区有部分细胞显示BrdU/NeuN（0.98%）或BrdU/GFAP（12.56%）双标阳性,而SGZ区未见双标细胞.结论局灶性脑缺血可激活老年大鼠室管膜下区和颗粒下层的神经干细胞明显增殖,并且室管膜下区有部分增殖细胞可分化为神经元或神经胶质.     

成年和老年大鼠局灶性脑缺血后脑室下区细胞的增殖分化

目的：比较老年和成年大鼠局灶性脑缺血后脑室下区（SVZ）神经干细胞的增殖与分化。方法：制作大脑中动脉梗死模型,用免疫组化法检测SVZ的5-溴脱氧尿核苷（BrdU）、神经元核抗原（NeuN）及胶质纤维酸性蛋白（GFAP）阳性细胞数的变化。结果：SVZ的BrdU阳性细胞在正常组和假手术组成年大鼠明显多于老年大鼠。实验组成年和老年大鼠均在缺血后增加,28d时仍高于正常水平,但成年大鼠各时间点均明显高于老年大鼠。在新生细胞中部分细胞是Brdu／NeuN或BrdU／GFAP双标细胞,但老年大鼠Brdu／NeuN双标细胞明显少于成年大鼠。结论：大鼠脑缺血激活SVZ神经干细胞增殖能力,成年大鼠明显强于老年大鼠,且新生细胞分化为神经元的比例也明显高于老年大鼠。     

自然衰老小鼠室管膜下区神经干细胞增龄性改变

目的 探讨自然衰老小鼠室管膜下区（SVZ）神经干细胞（NSCs）在衰老过程中生物学特点的改变。 方法 2月龄、28月龄小鼠,各10只,体外分离、培养、鉴定NSCs,5-溴-2-脱氧尿苷（BrdU）染色比较两组细胞的增殖水平;β-半乳糖苷酶（SA-β-Gal）染色检测细胞衰老水平;细胞内活性氧（ROS）试剂盒检测细胞ROS表达水平;Western blotting 检测细胞周期蛋白D1（cyclin D1）、p16及p19蛋白表达水平;体内用巢蛋白（Nestin）/性别决定基因高迁移率组蛋白-2（Sox2）检测两组小鼠SVZ区厚度的差异。 结果 年轻、年老小鼠的神经干细胞能表达Nestin及Sox2,符合神经干细胞的表达特性。与年轻小鼠相比,年老小鼠神经干细胞的BrdU阳性细胞比例显著下降,SA-β-Gal阳性细胞百分比显著升高,细胞活性氧水平显著升高,SVZ区厚度明显变薄,差异具有统计学意义（P<0.05）。在分子水平上表现为cyclin D1蛋白表达水平明显下降,p16、p19蛋白表达水平显著升高。 结论 年老小鼠NSCs出现增龄性变化,这些变化可能在大脑衰老中起重要作用。     

成年鼠大脑皮质损伤后神经前体细胞的增殖、迁移和分化

探讨皮质损伤后室管膜下区(SVZ)神经前体细胞增殖、迁移和分化的变化。在立体定位仪上纵切SD大鼠的大脑皮质,于手术后10d腹腔注射BrdU,分别于术后10、13、16、19和21d处死动物。用BrdU、nestin、GFAP和NSE免疫组化单标或双标染色方法,观察损伤后神经前体细胞增殖、迁移和分化的情况。结果显示:损伤后第10d,除损伤区出现大量BrdU阳性细胞外,SVZ背外侧角也聚集大量BrdU阳性细胞;第13d时,SVZ背外侧角的BrdU阳性细胞开始沿胼胝体向损伤区迁移;至第16d和19d,BrdU阳性细胞已迁移到SVZ背外侧角和损伤区之间;第21d时,BrdU阳性细胞已进到损伤区;BrdU阳性细胞为神经前体细胞,但未见分化为星形胶质细胞和神经元。结果提示机械性大脑皮质损伤可诱导SVZ背外侧角神经前体细胞增殖并引导向损伤区迁移,可能参与脑损伤后的修复。     

姜黄素通过调控Notch通路促进大鼠脑缺血后神经干细胞增殖和迁移

 目的： 观察姜黄素对大鼠局灶性脑缺血后室管膜下区（SVZ）神经干细胞(NSCs)增殖和迁移的影响,及其与Notch信号通路的相关性。方法： 采用线栓法制备大鼠大脑中动脉缺血再灌注损伤模型,随机分成假手术组（sham）、缺血再灌注组（I/R）及姜黄素治疗组(I/R+curcumin)。动物在模型成功后1 h连续腹腔注射姜黄素7 d后处死。免疫荧光法检测各组梗死侧SVZ BrdU及BrdU/DCX标记NSCs的数目及迁移趋势。Western blotting方法检测各组Notch通路的中间产物Notch 细胞内域（NICD)的表达。结果： I/R+curcumin组的大鼠梗死侧SVZ BrdU及BrdU/DCX标记的NSC较I/R组显著增多（P＜0.05）,同时其较I/R组更广泛地分布在往病灶迁移的路径上。I/R+curcumin组较I/R组的NICD生成也增多（P＜0.05）。结论： 姜黄素能促进缺血性大鼠脑SVZ NSCs增殖和迁移,其机制可能是通过激活Notch信号通路产生的。     

胰岛素样生长因子1在新生大鼠短暂脑缺血损伤修复中的关键作用

目的7日龄新生大鼠短暂脑缺血诱导侧脑室室管膜下区（SVZ）神经干细胞增殖,观察胰岛素样生长因子1（IGF-1）对神经干细胞增殖的影响。方法 7日龄新生SD大鼠64只,随机分为缺血组（n =24）、假手术组（n =24）、缺血阻断剂组（n =8）和缺血生理盐水组（n=8）。利用免疫组织化学方法观察缺血组和假手术组在缺血后1、4、7d SVZ新生细胞数量和IGF-1表达的变化,并观察缺血阻断剂组和缺血生理盐水组在IGF-1受体阻断剂（JB1）阻断7d后SVZ新生细胞数量和IGF-1表达的变化。结果 与同时间点假手术组比较,缺血后1、4、7d的SVZ新生细胞和IGF-1阳性细胞数量均显著增加,差异有统计学意义（P ＜0.05）;使用JB1后,缺血阻断剂组IGF-1的表达被阻断,IGF-1阳性细胞缺如,而缺血生理盐水组IGF-1表达正常;使用JB1后,缺血阻断剂组SVZ新生细胞数量显著减少,与缺血生理盐水组相比,差异有统计学意义（P ＜0.05）。结论 新生大鼠缺血再灌注损伤上调了IGF-1的表达,IGF-1表达增加促使SVZ神经干细胞增殖;使用JB1后,IGF-1的表达被阻断,神经干细胞增殖也显著减少,提示IGF-1在脑缺血损伤修复中起关键作用。     

嗅球切除对成年大鼠侧脑室外侧壁神经生发活动的影响

目的研究成年大鼠嗅球切除后侧脑室外侧壁（SVZ）的形态学变化,探讨嗅球对成年大鼠SVZ神经生发活动的影响。方法建立成年SD雄性大鼠右侧嗅球切除模型,并分别存活2、4、8、12周;利用Nissl染色、多唾液酸神经细胞黏附分子（PSA—NCAM）、GFAP免疫组织化学染色的方法,分别观察成年SD大鼠嗅球切除后存活不同时间两侧SVZ的组织结构和免疫组织化学特征;计数模型动物脑两侧SVZ细胞总数及PSA-NCAM、GFAP免疫阳性细胞数,并进行统计学分析。结果嗅球切除4周后,嗅球切除侧SVZ的细胞总数增加,PSA—NCAM免疫阳性细胞数增加,但GFAP免疫阳性细胞数没有明显变化;SVZ的细胞总数及PSA-NCAM免疫阳性细胞数的增加有从SVZ嘴侧向尾侧蔓延的趋势。结论嗅球切除后在SVZ仍有新生神经元不断产生,说明SVZ的神经生发活动可能并不依赖于嗅球的存在。     

兴奋性氨基酸抑制胎鼠神经干细胞的增殖

目的：研究兴奋性氨基酸对体外培养胎鼠神经干细胞（NSCs）增殖的影响。 方法:体外分离、培养与鉴定SD胚胎大鼠脑室下带(SVZ)神经干细胞，利用MTT比色法测定兴奋性氨基酸N-甲基-D-天冬氨酸（NMDA）和谷氨酸（Glu）对细胞增殖的作用。 结果:成功分离出具有胚胎源性的神经干细胞，NMDA和Glu均能导致神经干细胞的增殖活性下降。 结论:培养的SVZ区域细胞具有自我更新和多分化潜能，是中枢神经系统干细胞，兴奋性氨基酸能有效地抑制神经干细胞的增殖。     

冬虫夏草含药血清诱导神经干细胞定向分化的影响

目的探讨冬虫夏草中含药血清诱导神经干细胞（NSCs）定向分化的作用。方法取新生24 h内的Wistar大鼠大脑海马区分离培养神经干细胞三代后,加入低、中、高剂量冬虫夏草含药血清与对照血清进行培养,观察其对神经干细胞影响,通过MTT检测神经细胞生长曲线和免疫组化法检测神经干细胞向神经元分化的情况。结果新生大鼠海马分离培养的神经克隆球,经免疫细胞化学染色检测为Nestin阳性细胞。神经干细胞贴壁分化的细胞呈NSE、GFAP阳性。冬虫夏草低、中剂量组诱导神经干细胞分化为神经元的阳性细胞明显高于对照组,且呈量效依赖关系,高剂量组与对照组没有明显差别。结论冬虫夏草含药血清可体外诱导神经干细胞向神经元方向分化,在一定范围内存在量效依赖关系。     

Effect of hyperbaric oxygen on neurological recovery of neonatal rats following hypoxic-ischemic brain damage and its underlying mechanism

Objective: To investigate the mechanism underlying the effect of hyperbaric oxygen (HBO) on hypoxic/ischemic brain damage (HIBD) in a neonatal rat model. Methods: A total of 30 neonatal SD rats aged 7 days were randomly assigned into control group, HIBD group and HBO group (n=10 per group). Following HIBD modeling in neonatal rats, HBO treatment was performed for consecutive 7 days. Immunohistochemistry was done to measure the expression of bone morphogenetic protein-4 (BMP-4) and nestin in the hippocampus. In situ hybridization was employed to detect the mRNA expression of BMP-4 and nestin in the hippocampus. TUNEL staining was done to detect the apoptosis of nerve cells. Results: HIBD was successfully established in the present study. Among three groups, the protein expression of BMP-4 in the hippocampus was the highest in the HBO group, and the smallest in the HIBD group. The BMP-4 expression in the HIBD group was significantly lower than that in the control group. The protein expression of nestin in the hippocampus was the highest in the HBO group, and the smallest in the HIBD group. The nestin protein expression in the hippocampus of HIBD group was significantly lower than that in the control group. The mRNA expression of BMP-4 in the hippocampus was the highest in the HBO group, and the smallest in the HIBD group. The mRNA expression of nestin in the hippocampus was the highest in the HBO group, and the smallest in the HIBD group. The number of apoptotic cells was the largest in the HIBD group, and the number of apoptotic cells in the HBO group was still larger than that in the control group (P<0.01). Conclusion: HBO may promote the neurological recovery in neonatal rats with HIBD, which may be attributed to the increased protein and mRNA expression of BMP-4 and nestin in the hippocampus and the inhibition of neural apoptosis.     

Hyperbaric oxygenation promotes neural stem cell proliferation and protects the learning and memory ability in neonatal hypoxic-ischemic brain damage

The aim of our study was to evaluate whether hyperbaric oxygenation (HBO) was an effective therapy for neonatal hypoxic ischemic brain damage (HIBD). Seven-day-old rat pups were divided into 3 groups: sham, hypoxia-ischemia (HI) control and HI-HBO group. HBO was administered for HI rats daily. The pathologic changes in brain tissues were observed by hematoxylin-eosin (H-E) staining. The immunohistochemical staining was applied to detect the Nestin and 5-bromo-2-deoxyuridine (BrdU) positive cells in hippocampal dentate gyrus region. The learning and memory function of rats was examined by Morris water maze. The HI rats showed obvious pathologic changes accompanied by levels decreasing and disorder arrangement of pyramidal cells, glial cells proliferation in postoperative, and nerve nuclei broken, while pathologic changes of rats in sham group was approximate to that in the HI + HBO group that was opposite to the HI group. Compared with the sham group, the Nestin and BrdU positive cells in HBO + HI group at different time points increased significantly (P < 0.01). Learning and memory function of rats in HI group was poor compared with the sham/HI + HBO group (P < 0.01), while that in HI + HBO group was approximate to that in sham group (P > 0.05). HBO treatment improved the learning and memory ability of the HI rats. HBO therapy may be effective for neonatal HIBD treatment.     

Dependency of human neck reflex responses on the bandwidth of pseudorandom anterior-posterior torso perturbations

Anoxic brain injury resulting from cardiac arrest is responsible for approximately two-thirds of deaths. Recent evidence suggests that increased oxygen delivered to the brain after cardiac arrest may be an important factor in preventing neuronal damage, resulting in an interest in hyperbaric oxygen (HBO) therapy. Interestingly, increased oxygen supply may be also reached by application of normobaric oxygen (NBO) or hyperbaric air (HBA). However, previous research also showed that the beneficial effect of hyperbaric treatment may not directly result from increased oxygen supply, leading to the conclusion that the mechanism of hyperbaric prevention of brain damage is not well understood. The aim of our study was to compare the effects of HBO, HBA and NBO treatment on gerbil brain condition after transient forebrain ischemia, serving as a model of cardiac arrest. Thereby, we investigated the effects of repetitive HBO, HBA and NBO treatment on hippocampal CA1 neuronal survival, brain temperature and gerbils behavior (the nest building), depending on the time of initiation of the therapy (1, 3 and 6 h after ischemia). HBO and HBA applied 1, 3 and 6 h after ischemia significantly increased neuronal survival and behavioral performance and abolished the ischemia-evoked brain temperature increase. NBO treatment was most effective when applied 1 h after ischemia; later application had a weak or no protective effect. The results show that HBO and HBA applied between 1 and 6 h after ischemia prevent ischemia-evoked neuronal damage, which may be due to the inhibition of brain temperature increase, as a result of the applied rise in ambient pressure, and just not due to the oxygen per se. This perspective is supported by the finding that NBO treatment was less effective than HBO or HBA therapy. The results presented in this paper may pave the way for future experimental studies dealing with pressure and temperature regulation.     

高压氧联合神经干细胞移植治疗大鼠脊髓损伤

背景：单纯神经干细胞移植已应用于对受损脊髓组织的修复。 目的：以神经干细胞移植同时应用高压氧治疗大鼠脊髓损伤,观察联合作用对脊髓损伤大鼠运动功能恢复的影响。 方法：雌性SD大鼠60只,以半切法制成胸段脊髓半横断大鼠模型。随机分成单纯损伤组、神经干细胞移植组及高压氧治疗组,每组20只。伤后第4周取材行病理切片苏木精-伊红染色及BrdU免疫组织化学染色,第8周取材行辣根过氧化物酶示踪,透射电镜观察轴突的再生情况,通过体感诱发电位观察神经电生理恢复情况。造模后1,2,4,6,8周进行BBB评分和斜板实验等运动功能检测。  结果与结论：观察伤后4周病理切片,单纯损伤组未见神经轴索通过,神经干细胞移植组可见少量神经轴索样结构,高压氧治疗组可见较多神经轴索样结构。BrdU的阳性细胞数及辣根过氧化物酶阳性神经纤维数,高压氧治疗组最多,神经干细胞移植组次之,单纯损伤组最少,且各组之间差异有显著性意义(P < 0.05)。透射电镜下神经干细胞移植组、高压氧治疗组正中横断面可见新生的无髓及有髓神经纤维。高压氧治疗组大鼠体感诱发电位的潜伏期短于神经干细胞移植组,波幅高于神经干细胞移植组(P < 0.05),明显优于单纯损伤组(P < 0.01)。伤后4周神经干细胞移植组、高压氧治疗组大鼠后肢运动功能均有较明显恢复,高压氧治疗组较神经干细胞移植组恢复快(P < 0.05);单纯损伤组亦有所恢复,但程度较轻。提示神经干细胞移植对于脊髓损伤大鼠后肢功能的恢复有促进作用,联合应用高压氧有协同效果。     

VEGF在高压氧治疗激素性股骨头坏死中的意义

目的:观察血管内皮生长因子(VEGF)在激素性股骨头坏死及高压氧治疗过程中的变化,探讨激素性股骨头坏死的发病机理。方法:健康日本成年大耳白兔60只,随机分为模型组(n=42)及对照组(n=18)。模型组每周两次肌肉注射醋酸泼尼松龙10mg/kg,对照组每周两次肌肉注射生理盐水2ml。共6周。随后将模型组随机分为高压氧治疗组(n=16)及常压常氧组(n=16),前者行高压氧治疗,后者呼吸常压新鲜空气,共持续6周。检测实验第2周、4周、6周、8周、10周、12周各组兔骨组织VEGF表达、组织病理学及影像学变化。结果:造模第6周时股骨头较多骨细胞坏死溶解成碎片,股骨头软骨下区骨小梁表面的成骨细胞和血管仅出现少量VEGF阳性表达;高压氧治疗第6周,实验兔骨小梁周围出现较稀疏的骨母细胞,电镜发现新生的骨细胞和胶原纤维,VEGF阳性细胞明显增多,软骨下阳性血管也明显增多,阳性部位主要位于血管内膜,同时在染色阴性区域出现点状新生毛细血管。结论:高压氧通过促进VEGF等细胞因子的分泌,加速股骨头的再血管化和再骨化进程,促进骨修复。     

~(60)Co-γ射线照射对小鼠SVZ神经干细胞增殖的影响

目的:探讨60Co-γ射线照射对成体小鼠侧脑室室管膜下区(SVZ)神经干细胞增殖的影响。方法:28只昆明小鼠随机分成4组,每组7只,分别以0 Gy、5 Gy(小剂量)、15 Gy(中剂量)、30 Gy(大剂量)剂量进行照射,于照射后1周观察侧脑室室管膜下区(SVZ)的5-溴脱氧核苷尿嘧啶(BrdU)阳性细胞形态和数目。结果:照射后1周,各照射组SVZ的BrdU阳性细胞形态与对照组无差别,呈圆形、椭圆形以及梭形等;15 Gy、30 Gy照射组SVZ的BrdU阳性细胞数明显降低(P<0.01),5 Gy照射组SVZ的BrdU阳性细胞数无差别(P>0.05)。结论:大中剂量60Co-γ照射会抑制SVZ神经干细胞的增殖分裂能力。     

丙酮酸乙酯对缺氧缺血性脑损伤新生大鼠脑组织的保护作用

 目的： 探讨丙酮酸乙酯（ethyl pyruvate, EP）对缺氧缺血性脑损伤（hypoxic-ischemic brain damage, HIBD）新生大鼠脑组织的作用及其可能机制。方法：165只7日龄SD大鼠随机分为3组:假手术组（n=43）、HIBD模型组（n=61）和HIBD+EP处理组（n=61）,造模前30 min腹腔注射EP（50 mg/kg）1次,此后每天1次,3 d后测定脑组织匀浆超氧化物歧化酶（SOD）活性和丙二醛（MDA）含量以及脑组织含水量,TUNEL法检测脑组织凋亡细胞数;14 d后检测缺血侧和非缺血侧脑重量以判别脑萎缩程度。结果：HIBD+EP组脑组织SOD活性为(125.78±18.35)×103 U/(g protein),较HIBD模型组［(97.84±15.50)×103 U/(g protein)］明显增强（P<0.05）;MDA含量为(4.42±1.04) μmol/(g protein),较HIBD模型组［(6.02±0.89) μmol/(g protein)］明显降低（P<0.05）。此外,HIBD模型组缺血侧（左侧）的脑组织含水量高于非缺血侧（右侧）（P<0.05）,EP治疗后两侧的脑组织含水量无显著差异（P>0.05）,提示EP减轻了缺血侧的脑水肿。同时HIBD+EP组缺血侧脑皮质和海马每个视野的凋亡细胞数目分别为96.63±10.08和41.91±9.96,较模型组（111.54±1.64和51.73±1.77）明显减少,但仍多于假手术组（P<0.05）。HIBD+EP组左脑萎缩程度为(13.25±5.19)%,较HIBD模型组［(20.32±5.10)%］明显减轻（P<0.05）。结论：EP具有抗氧化功能,能减轻脑水肿,减少脑细胞凋亡,减轻脑萎缩,对HIBD新生大鼠脑组织具有保护作用。     

Increased adult neurogenesis in the subventricular zone in a rat model of sepsis

Neurogenesis occurs in the adult brain throughout the lives of all mammals. The dentate gyrus (DG) of the hippocampus and the subventricular zone (SVZ) of the lateral ventricles have been established as the primary sites of adult neurogenesis, and recent studies have shown that inflammation has a modulating effect on adult neurogenesis. However, only limited studies have investigated how neurogenesis is affected during sepsis and sepsis-associated encephalopathy. Therefore, we investigated adult neurogenesis in the cecal ligation and puncture (CLP) model of sepsis using a cell proliferation marker, 5-bromo-2′-deoxyuridine (BrdU). Twenty-four rats were placed into the following three groups: an un-operated control group, a sham-operated group that underwent exactly the same procedures except for CLP, and a CLP group that survived surgical procedures and developed signs of sepsis. Rats were monitored for twenty-four hours before they were euthanized and their brains were harvested. Significantly higher numbers of BrdU-immunoreactive cells were observed in the SVZ of the lateral ventricles in the CLP group as compared with both control groups, while no significant difference was found in the number of DG granule cells between the three groups. The majority of BrdU-positive cells in the SVZ co-expressed the neuronal marker doublecortin but not the astrocytic marker glial fibrillary acidic protein. Taken together, our results suggest that sepsis induced by CLP in rats increases region-specific cellular regeneration, in a possible attempt to compensate for the devastating effect of sepsis and sepsis-associated encephalopathy on the brain.     

高压氧综合治疗胎儿宫内发育迟缓疗效观察

目的探讨在综合改善胎盘微循环的基础上,应用高压氧纠正胎儿宫内发育迟缓的疗效.方法将符合筛选指标的住院IUGR孕妇61例分为高压氧组28例(A组)和非高压氧组33例(B组),另外选择同期正常孕妇30例作为正常妊娠对照组(C组),比较B型超声、胎儿监护及新生儿结局等指标.结果1.高压氧综合治疗能显著降低PI、RI值,明显改善IUGR患者的脐血流;2.能明显促进胎儿生长,增加新生儿体重,提高IUGR的治愈率.结论高压氧结合常规治疗IUGR可获得较好临床疗效,值得临床推广.