Follicles were reconstituted from dissociated mouse fetal ovarian cellsin vitro

Early folliculogenesis involved in the interaction of germ cells and somatic cells is a complicated physiological event. Female germ cells are committed to differentiate into oocytes and finish complete development in the functional units of follicles. Thus there will be great significance in basal research and practices to evaluate the possibility of ovarian cells to reconstitute into follicles in vitro. In the present research, 12-16 dpc (days post coitum) mouse fetal ovarian cells were respectively isolated using collagenase digestion and cultured in droplets in vitro. The results revealed that the fetal ovarian cells of 12-16 dpc appeared to form multiple cell aggregates and tissue-like pieces in vitro. However, 12-13 dpc ovarian cells failed to form the follicles. 14-15 dpc ovarian cells were competent to form a few follicle-like complexes. Furthermore many small typical follicles were reconstituted from 16 dpc ovarian cells in vitro. The results showed for the first time that mouse embryonic ovarian cells were able to form the follicles in vitro. It was a gradual progression for the female germ cells to achieve the ability to induce somatic cells differentiation and reconstitu-tion into follicles, which may directly lead to the success in reorganization and transplantation of genetically modified ovary in vitro.     

马面魨卵巢中磷脂成分与脂肪酸的分析

对捕获旺季的马面钝卵巢中的总脂和磷脂进行了提取和含量测定,并对磷脂的组分,总脂和磷脂的脂肪酸组成进行了分析,结果表明：马面钝卵巢中磷脂的含量为1．09％－1．29％,占总脂的23．01－33．0％,磷脂中含有较丰富的PC,PE及一定量的PI,LPC;与大豆和蛋黄的磷脂相比,马面钝卵巢中的总脂和磷脂含有更丰富的多不饱和脂肪酸,此外卵巢磷脂中的脂肪酸不饱和度及EPA＋DHA之一要高于总脂。     

蛋鸡及其正反杂交组合卵巢组织的基因差异显示研究

在杂交试验中发现：白莱航蛋鸡（AA）与农大褐蛋鸡（DD）的正交组合（AD）和反交组合（DA）鸡群在产蛋数上存在着明显的杂种优势.为了探明产蛋数杂种优势的遗传机理,研究了4个组合鸡群在产蛋高峰期（32周龄）卵巢组织的基因差异显示.结果表明,24种引物组合在4个试验鸡群的RNA池中共显示出726条稳定的cDNA条带,其中112（15.43%）条为差异带.在杂种与纯种间共发现7类基因差异表达模式,其中量的差异有2类：Ⅰ杂种超强（T1++1,T1+11,T11+1）表达17条（15.17%）;Ⅱ杂种减弱（T1 1,T1 11,T11 1）表达15条（13.39%）;质的差异表达模式有5类：Ⅲ杂种沉默型（T1001、T1011、T1101）9条（8.04%）;Ⅳ杂种特异型（T0110、T0100、T0010）7条（6.25%）;Ⅴ杂种与单亲一致（T1110、T0111、T1100、T1010、T0101、T0011）型58条（51.78%）;Ⅵ共显性（T+11 、T 11+）6条（5.36%）;Ⅶ杂种与双亲一致型（T1111）614条（84.57%）.试验结果表明4个组合鸡群在产蛋高峰期的卵巢组织中存在着明显的基因表达差异.     

白蜡虫雌性生殖系统的形态和结构的研究

白蜡虫雌性生殖系统由卵巢,一、二级分枝输卵管,侧输卵管、中输卵管、副性腺和受精囊组成.卵巢管属端滋式,由二级输卵管分化形成.营养腔内有3个滋养细胞,卵室内一个卵母细胞,每条卵巢管只形成一个卵.受精囊一个,圆球形.副性腺两对.     

三倍体无籽西瓜的组织培养

将三倍体无籽西瓜带子叶幼芽以及成株顶芽和腋芽培养在附加ＢＡ２ｍｇ·Ｌ－１的ＭＳ培养基中，芽体均可以扩增为芽丛．并首次报道了花芽在培养基中展开后子房愈伤组织也可以再生不定芽．不同途径得到的幼芽进一步扩增或转移到ＭＳ附加ＩＡＡ０．２ｍｇ·Ｌ－１的培养基后，均可以分化不定根，从而形成完整植株．     

Melatonin Administration Accelerates Puberty Onset in Mice by Promoting FSH Synthesis

Although melatonin has been extensively studied in animal reproduction, the mechanism of melatonin in puberty remains elusive. This study was designed to explore the effect of intraperitoneal administration of melatonin on puberty onset in female mice. The injection of melatonin into postnatal days 10 mice at a dose of 15 mg/kg accelerated the puberty onset in mice. Mechanistically, there was no difference in physical growth and serum Leptin levels after melatonin administration. Meanwhile, the serum levels of reproductive hormones involved in hypothalamic-pituitary-ovarian axis, such as FSH and estrogen level in serum were increased. The mRNA levels of GnRH and GnRHr were not affected by melatonin, while the expressions of FSHβ in pituitary and Cyp19a1 in ovary were significantly up-regulated. In addition, melatonin still promoted FSH synthesis after ovariectomy. Furthermore, the enhanced activity of ERK1/2 signaling verified that the expression of FSHβ increased in pituitary. We confirmed that melatonin promoted the FSH synthesis in pituitary, thereby increased serum estrogen levels and ultimately accelerated puberty onset. However, these effects of melatonin may be pharmacological due to the high dose. This study would help us to understand the functions of melatonin in pubertal regulation comprehensively.     

卵巢成熟性囊性畸胎瘤伴中-低分化鳞癌1例并文献复习

目的：探讨卵巢成熟性囊性畸胎瘤伴鳞状细胞癌的病理学诊断及鉴别诊断。方法：分析1例卵巢成熟性囊性畸胎瘤伴鳞状细胞癌临床资料、影像学特征及病理学特征并进行文献分析。结果：巨检见灰白灰褐色囊状肿物,18cm×llcm×7cm,囊内含脂质与毛发,可剥离,囊壁较光滑,未见液体及黏液成分。囊内一侧见4cm×3cm灰白色实性区域,切面灰白色、质脆。镜下肿瘤囊壁内衬鳞状上皮,囊壁内见皮脂腺及毛囊;可见散在的核大深染的呈弥漫排列的细胞,核仁不明显,部分细胞呈梭型,多次取材发现小片状分化的鳞状细胞癌癌区,其中可见细胞内角化、细胞间桥及角化珠。免疫组化染色结果：CK5／6及PCK：恶性肿瘤细胞阳性表达。病理诊断：卵巢成熟性囊性畸胎瘤伴中一低分化鳞状细胞癌。结论：卵巢成熟性囊性畸胎瘤伴鳞状细胞癌是一种少见的高度恶性肿瘤,患者年龄及绝经年龄、肿瘤的大小、规范的病理学检查及特征性的免疫组化标记有助于其病理学诊断及鉴别诊断。     

Studies on Poplar Parthenogenesis Induced by Laser

ＳｔｕｄｉｅｓｏｎＰｏｐｌａｒＰａｒｔｈｅｎｏｇｅｎｅｓｉｓＩｎｄｕｃｅｄｂｙＬａｓｅｒＳｔｕｄｉｅｓｏｎＰｏｐｌａｒＰａｒｔｈｅｎｏｇｅｎｅｓｉｓＩｎｄｕｃｅｄｂｙＬａｓｅｒ￥ＣＨＥＮＺｈｅｎｇｕ；ＹＵＷａｎｓｕ；ＸＵＣｈｅｎｇｌｉｎ；ＬＩＵＸｉａ...     

不同染色方法显示卵巢凋亡颗粒细胞的比较

为比较卵巢凋亡细胞形态在不同染色方法下的实验结果,选用HE、甲基绿-派洛宁、吖啶橙、Hoechst33258等对家兔卵巢组织石蜡切片染色,普通光镜或荧光显微镜进行观察,比较不同染色方法显现凋亡细胞的特异性是否有差异。实验结果显示,4种方法均可以识别凋亡细胞,荧光染色与普通染色间存在显著差异性。