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鱼油富含ω-3多不饱和脂肪酸、维生素A、维生素D和天然色素等营养物质，具有多种营养功效。为促进我国鱼油产业的绿色可持续发展，保障产品质量安全，结合国内外研究进展，分别从鱼油的绿色制备工艺、标准规范和营养功效等方面进行综述，梳理了应用于鱼油生产的水酶法、超临界流体萃取法、超声辅助提取法、微波辅助提取法等绿色制备工艺，基于国内外鱼油相关的标准规范，阐述了鱼油的基本成分和质量指标、污染物限量和添加剂限量等，探讨了鱼油在预防心血管疾病、抗炎和预防脑部疾病方面的营养功效，并针对鱼油应用中存在的问题进行了分析和展望。未来应深入研究鱼油制备新工艺，完善相关标准规范，并进一步探究其生物活性机制。 Fish oil is rich in nutrients such as omega-3 polyunsaturated fatty acids (ω-3 PUFA), vitamin A/D and natural pigments, and has a variety of nutritional efficacy. To promote the green and sustainable development of the fish oil industry of China and ensure the safety and quality of fish oil products, the green preparation process, standard specifications and nutritional efficacy of fish oil were reviewed based on recent progresses at home and abroad. Several green preparation processes, including aqueous enzymatic extraction, supercritical fluid extraction, ultrasound-assisted extraction, microwave-assisted extraction methods were analyzed. Based on the relevant standard specifications of fish oil at home and abroad, the basic components and quality indicators, pollutant limits, and additive limits of fish oil were elaborated. The nutritional efficacy of fish oil in preventing cardiovascular diseases, anti-inflammation and preventing brain diseases were investigated, and the issues present in the application of fish oil were analyzed and prospected. In the future, it is necessary to conduct extensive research on the development of new preparation process for fish oil, as well as to improve the related standard specifications. Furthermore, it is essential to explore the biological activity mechanisms of fish oil in greater depth.

以福建紫海胆（Heliocidaris crassispina）性腺为研究对象，采用单因素实验和正交实验优化水酶法提取紫海胆性腺脂质工艺，并基于气相色谱-质谱联用（GC-MS）、二醇基硅胶固相萃取（Generik Diol SPE）、高效薄层色谱（HPTLC）和差示扫描量热（DSC）等技术，以脂质得率、理化性质、脂肪酸组成、营养指标、脂质组成、熔融与结晶特性为指标，探讨了水酶法、Folch法和Matyash法对紫海胆性腺脂质品质的影响。结果表明：水酶法提取紫海胆性腺脂质最佳工艺条件为料液比1∶ 20、中性蛋白酶添加量7 500 U/g、酶解时间5 h、酶解温度50 ℃和pH 7，该条件下脂质得率为2322%，显著低于Folch法（27.27%）和Matyash法（27.14%）；与Folch法和Matyash法相比，水酶法提取的紫海胆性腺脂质过氧化值（0.006 g/100 g）较低，碘值（95.77 g/100 g）较高，饱和脂肪酸含量（51.48%）较低，多不饱和脂肪酸含量（34.53%）较高，EPA与DHA总含量（15.04%）较高，营养指标较好，磷脂含量（4.23%）较低，熔融与结晶温度较低。综上，虽然水酶法提取紫海胆性腺脂质工艺存在得率低、破乳工艺复杂、磷脂选择性差等技术瓶颈，但其反应条件温和、绿色安全，所提取的脂质品质佳，具有较好的营养价值、较低的熔融与结晶温度，适合高品质海洋膳食脂质的研制。 The lipids from the gonad of Heliocidaris crassispina (Fujian Province, China) was extracted using enzyme-assisted aqueous extraction method (EAE), and the extraction process was optimized by single factor experiment and orthogonal experiment. By applying gas chromatography-mass spectrometry (GC-MS), Generik Diol solid-phase extraction (SPE), high-performance thin layer chromatography (HPTLC) and differential scanning calorimetry (DSC) technologies, the quality of EAE lipid was comparatively characterized with that of Folch method and Matyash method with the lipid yields, physicochemical properties, fatty acid compositions, nutritional indexes, lipid compositions, melting and crystallization characteristics as indicators. The results showed that the optimal conditions of EAE process were determined as follows: solid-liquid ratio 1∶ 20, neutral protease dosage 7 500 U/g, enzymatic hydrolysis temperature 50 ℃，enzymatic hydrolysis time 5 h, and pH 7. The lipid yield was 23.22% under above conditions, which was significantly lower than that of Folch method (2727%) and Matyash method (27.14%). Compared with Folch method and Matyash method, the lipids from the gonad of Heliocidaris crassispina extracted by EAE had lower peroxide value (0.006 g/100 g), higher iodine value (95.77 gI/100 g), lower content of saturated fatty acids (51.48%), higher content of polyunsaturated fatty acids (34.53%), higher total content of EPA and DHA (15.04%), better nutritional indexes, lower phospholipids content (4.23%) and lower melting temperature and crystallization temperature. In conclusion, though bearing the shortages of low yield, complicated demulsification process and poor selectivity of phospholipids, EAE surpassed Folch method and Matyash method for milder conditions, eco-friendly initiatives, better quality, better nutritional value, lower melting and crystallization temperature of lipids, and suitable for the development of high quality marine dietary lipids.

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Osteogenic differentiation of mesenchymal stem cells (MSCs) is an important link of bone metabolism and bone repair, the mechanism of which is usually complicated. Recent studies have found that BMP, FGF, Wnt, Hedgehog, NELL1, IGF, Notch and other signaling molecules are involved in the regulation of osteogenic differentiation of MSCs. These signaling molecules themselves have been shown to have a strong ability to promote osteogenic differentiation. They can activate the corresponding receptors by specific ligands, thus initiating the specific signal transduction pathways in the cell, and finally promote the transcription and translation of the genes related to bone formation. Furthermore, all the signaling pathways form a complex network which regulates and influences the osteogenic differentiation of MSCs. Further researches on the mechanism of the interaction of these signaling pathways is of great significance in promoting the development of bone tissue engineering and the treatment of bone metabolic diseases. [ABSTRACT FROM AUTHOR]

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目的　探讨非小细胞肺癌（ＮＳＣＬＣ）组织３′-脱氧-３′-１８Ｆ-氟代胸苷（１８Ｆ-ＦＬＴ）ＰＥＴ显像所示１８Ｆ-ＦＬＴ高摄取区与肿瘤细胞高增殖区的一致性。方法　选择１２例初治、接受根治性手术切除治疗的ＮＳＣＬＣ患者。术前３ｄ行１８Ｆ-ＦＬＴ ＰＥＴ ＣＴ 检查，以最大标准摄取值（ＳＵＶｍａｘ）的８０％为阈值勾画ＦＬＴ的高摄取区。术后取得完整的肿块并按在体方向还原，４ｍｍ层厚制作肺癌病理大切片并行ＨＥ染色及Ｋｉ-６７染色，Ｋｉ-６７指数＞２０％的区域为高表达区，ＰＥＴ图像与病理图像进行配准后比较高摄取区与高表达区位置是否相同。结果　１２例患者成功制作病理切片并顺利阅片。５例１８Ｆ-ＦＬＴ高摄取区与Ｋｉ-６７高表达区一致。结论　ＮＳＣＬＣ组织１８Ｆ-ＦＬＴ高摄取区与Ｋｉ-６７高表达所代表的肿瘤细胞高增殖区并非完全一致。 [ABSTRACT FROM AUTHOR]