超声引导下针刺足三里穴对胃窦收缩功能的影响：随机对照研究＊

目的 观察超声引导下针刺足三里穴得气与不得气对胃窦收缩功能的影响。方法 将符合纳入标准的72例健康受试者，按照1∶1随机分配到观察组和对照组，每组36例。在超声引导下针刺受试者右侧足三里穴，观察组针刺深度到达小腿骨间膜处，施以提插捻转手法使之得气，对照组针刺深度到达浅筋膜处，不运针，不要求得气，应用受试者针感临床评价量表、胃脘部热红外成像与胃窦运动超声数据进行评估，比较两组针刺前后胃窦收缩频率的变化。结果 观察组完成35例，脱落1例；对照组完成34例，脱落2例。两组间比较，受试者针感临床评价量表评分、胃窦收缩频率、胃窦运动幅度与胃窦运动指数在针刺得气后差异具有统计学意义（P < 0.05）；观察组针刺前后胃窦收缩频率、胃窦运动幅度与胃窦运动指数比较差异具有统计学意义（P < 0.05），以胃窦收缩频率增加、运动幅度增大及运动指数增加为主要表现；对照组针刺前后胃窦收缩频率、胃窦运动幅度与胃窦运动指数比较差异均无统计学意义（P > 0.05）；观察组与对照组针刺前后胃脘部皮肤温度变化差异无统计学意义（P < 0.05）。结论 针刺足三里穴得气可一定程度改变胃窦运动功能，超声成像技术能有效引导针刺操作并实时观察记录胃窦运动变化，安全高效，值得临床推广与应用。     

Reconstruction of dorsal skin scars in rats

Laboratory of Growth and Development, Institute of Human Morphology, Academy of Medical Sciences of the USSR, Moscow. (Presented by Academician of the Academy of Medical Sciences of the USSR, Permyakov.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 112, No. 8, pp. 217–219, August, 1991.     

Survival of primordial follicles following prolonged transportation of ovarian tissue prior to cryopreservation

BACKGROUND: Cryopreservation of ovarian tissue for fertility preservation is becoming increasingly common. Treatment of diseases that may deprive the ovaries of follicles is often performed at local hospitals that are without the necessary facilities and expertise to cryopreserve ovarian tissue. The aim of the present study was to evaluate whether primordial follicles of ovarian cortex survive transport for up to 4 h prior to cryopreservation. METHODS: Immediately after recovery of one ovary from each of four patients, the cortex was roughly isolated, placed in IVF culture medium, kept on ice and transported for 3-4 h to the centre where final dissection and cryopreservation took place. Transplantation of pieces of thawed ovarian cortex under the skin of ovariectomized immunodeficient mice for a period of 4 weeks was used to assess the survival of primordial follicles. RESULTS: After transplantation, ovarian tissue from each of the four patients contained surviving follicles. CONCLUSIONS: Transport of roughly isolated ovarian cortex cooled on ice for a period of up to 4 h allows survival of primordial follicles following cryopreservation and transplantation to immunodeficient mice.     

Transforming growth factor-beta 1 (TGF-β1) expression in ovine lentivirus-induced lymphoid interstitial pneumonia

The aim of this study was to detect the localization of TGF-β1 protein expression in normal sheep lungs and lungs with interstitial pneumonia associated with infection with maedi-visna virus (MVV). Immunohistochemical localization of TGF-β1 was determined in 24 lungs of adult sheep naturally infected with MVV and six control lungs of seronegative sheep. The lungs of infected animals showed different lesional degrees: grade 0, no lesions; grade I, mild; grade II, moderate; grade III, severe. In normal lungs, TGF-β1 was primarily expressed in airway epithelium, bronchial cartilage and glands, endothelial cells and smooth muscle of blood vessels, alveolar macrophages and type II pneumocytes. No staining was observed in alveolar interstitium. In MVV-infected sheep an increased number of positive alveolar and interstitial macrophages and staining of alveolar interstitium was observed in grade I, grade II and some grade III lesions. In grade III lesions an inverse relationship was found between TGF-β1 staining and smooth muscle hyperplasia. Small lymphoid aggregates, in general, showed strong reactivity, whereas larger ones showed weak reactivity, mainly associated with follicular areas. No significant differences in the staining intensity of airways and blood vessels were observed between control and MVV lungs. The increased expression of TGF-β1 in early maedi lesions and its down-regulation in more advanced disease suggest the operation of a temporal regulatory mechanism whereby early expression may lead to the smooth muscle hyperplasia which develops during the disease. The striking inverse relationship between TGF-β1 expression and follicle organization is intriguing and warrants further investigation.     

The camptomelic syndrome in two female siblings

A patient is reported whose only two pregnancies resulted in phenotypically and geno-typically female infants with camptomelic syndrome of the long-limbed variety. Both infants died within a few minutes of birth.     

NANOG Alleviates the Damage of Human Hair Follicle Mesenchymal Stem Cells Caused by H_2O_2 through Activation of AKT Pathway

Objective To explore the protective effect of NANOG against hydrogen peroxide(H_2O_2)-induced cell damage in the human hair follicle mesenchymal stem cells(hHF-MSCs). Methods NANOG was expressed from a lentiviral vector, pLVX-IRES-ZsGreen. NANOG hHF-MSCs and vector hHF-MSCs were treated with 400 μmol/L hydrogen peroxide(H_2O_2) for 2 h, the cell survival rate, cell morphology, ROS production, apoptosis and expression of AKT, ERK, and p21 were determined and compared. Results Our results showed that NANOG could activate AKT and upregulate the expression of p-AKT, but not p-ERK. When treated with 400 μmol/L H_2O_2, NANOG hHF-MSCs showed higher cell survival rate, lower ROS production and apoptosis, higher expression of p-AKT, higher ratio of p-AKT/AKT. Conclusion Our results suggest that NANOG could protect hHF-MSCs against cell damage caused by H_2O_2 through activating AKT signaling pathway.     

双氢睾酮体外培养人毛囊中差异表达的miR-133b对人毛乳头细胞的增殖及诱导能力的影响

探究不同浓度双氢睾酮（DHT）对毛囊生长和毛囊细胞增殖的影响及其与miR-133b表达的关系,然后进一步探究miR-133b对毛乳头细胞的增殖和诱导能力的影响。     

COPD患者血清IL-17A 和CXCL12浓度与病情及淋巴滤泡生成的关系

目的：探讨慢性组塞性肺疾病（COPD）患者血清白细胞介素‐17A（IL‐17A）和趋化因子CXCL12水平的变化及其与病情、淋巴滤泡生成的关系。方法选取2014年1月1日至2015年1月1日该院收治的急性加重期COPD患者88例为研究对象,根据COPD分级将其分为轻度组（n＝23）、中度组（n＝42）和重度组（n＝23）3个亚组,另根据淋巴滤泡生成情况将其分为淋巴滤泡组（n＝21）和非淋巴滤泡组两个（n＝67）亚组。采用酶联免疫吸附试验检测各组急性加重期和稳定期血清IL‐17A和趋化因子CXCL12水平并检测同期肺功能,分析COPD患者血清IL‐17A和CXCL12水平与其病情、淋巴滤泡生成及肺功能的关系。结果与轻度组比较,中度组与重度组急性加重期和稳定期患者血清IL‐17A和CXCL12水平均升高,1 s用力呼气容积（FEV1）和用力肺活量（FVC）均降低;与中度组比较,重度组患者血清LI‐17A和CXCL12水平均升高,FEV1和FVC均降低（P＜0．05）。与非淋巴滤泡组比较,淋巴滤泡组急性加重期和稳定期患者血清IL‐17A和CXCL12水平均升高,FEV1和FVC均降低（P＜0．05）。相关性分析结果显示：COPD患者血清IL‐17A和CXCL12水平与其病情严重程度及淋巴滤泡生成率均呈正相关（IL‐17A ：r值分别为0．728、0．762;CXCL12：r值分别为0．752、0．776,P＜0．05）,与 FEV1和 FVC均呈负相关（IL‐17A ：r值分别为－0．756、－0．783;CXCL12：r值分别为－0．743、－0．767,P＜0．05）。结论 COPD患者血清IL‐17A和CXCL12水平与其病情、肺功能及淋巴滤泡生成相关,可能作为患者病情、肺功能及淋巴滤泡生成的评估参考指标。     

Effects of plane of nutrition and arginine on ovarian follicles in non-pregnant sheep: Cell proliferation,and expression of endothelial nitric oxide and its receptor

The aim of this study was to investigate the role of the nitric oxide (NO) system in ovarian function, by determining if arginine (Arg) supplementation impacts follicle number, cell proliferation, and expression of the NO system members in nutritionally compromised ewes. Ewes were randomly assigned into maintenance (C, 100% requirements), excess (O; 2xC), or restricted (U; 0.6xC) diets 8 weeks prior to Arg treatment. Ewes were individually fed twice daily with pelleted diets. Ewes from each nutritional group were randomly assigned to one of two treatments: saline or Arg, which was initiated on day 0 of the estrous cycle and administered 3 times per day. Ovaries were collected at the early-luteal, mid-luteal and late-luteal/follicular phases of the estrous cycle to determine 1) the number of surface follicles, 2) follicle cell proliferation marked by Ki67 protein expression, and 3) expression of endothelial nitric oxide (eNOS; NOS3) and soluble guanylyl cyclase beta (sGC; GUCY1B3) protein and mRNA in granulosa (G) and theca (T) layers using immunohistochemistry followed by image analysis and qPCR, respectively. During nutritional treatment, C maintained body weight, O gained 6±1.2 kg, and U lost 14±1.3 kg. Our data show that: 1) Ki67 was expressed in all ovarian compartments, eNOS protein was detected in blood vessels of T and stroma, and sGC protein was detected in T cells, and blood vessels of T layer and other ovarian compartments; 2) plane of nutrition affected the number of surface follicles, and thus folliculogenesis, cell proliferation in the T layer, eNOS and sGC protein expression in T, and NOS3 and GUCY1B3 mRNA expression in G; 3) Arg treatment affected cell proliferation in G and T, eNOS and sGC protein expression in T, mRNA expression of NOS3 in T in all groups, and GUCY1B3 in G depending on the stage of the estrous cycle; and 4) G and T cell proliferation, and expression of eNOS and sGC protein in T was affected by the stage of the estrous cycle. Our data demonstrated that plane of nutrition and Arg are involved in the regulation of follicular functions in non-pregnant sheep.