Du Yonghong, Fan Tien-Ying, Tan Yi, Xiong Zhengai, Wang Zhibiao
Biomedical Engineering Department, Institute of Ultrasound Engineering in Medicine, Chongqing Key Laboratory of Ultrasound Medical Engineering, Chongqing Medical University, Chongqing, China.
J Am Assoc Lab Anim Sci. 2010 May;49(3):289-93.
Seasonal changes in menstrual cycle patterns and internal reproductive organs were studied in female rhesus macaques (n = 16) in indoor-outdoor housing in Chongqing, China. Uterine size and shape and endometrial thickening were evaluated during the early-secretory phase by using ultrasonography and MRI. From October to February, the macaques' menstrual cycles were short and regular, and the endometrial lining were easily visible by ultrasonography and MRI. However, from March through to September, menstrual cycles became irregular, endometrial lining were unclear, and the endometrium did not change markedly during the early-secretory phase. We conclude that the reproductive season for a female rhesus macaque in Chongqing, China is from October through February, whereas the nonreproductive season is from March through September. The menstrual cycle patterns and reproductive organs of the macaques showed marked seasonal variation throughout the 12-mo observation period. In addition, uterine size, volume, and imaging characteristics varied dramatically between reproductive and nonreproductive seasons.
在中国重庆，对16只圈养在室内外环境中的雌性恒河猴的月经周期模式和内部生殖器官的季节性变化进行了研究。在分泌期早期，通过超声检查和磁共振成像（MRI）评估子宫大小、形状和子宫内膜增厚情况。从10月到2月，恒河猴的月经周期短且规律，超声检查和MRI很容易观察到子宫内膜。然而，从3月到9月，月经周期变得不规律，子宫内膜不清晰，且在分泌期早期子宫内膜没有明显变化。我们得出结论，中国重庆雌性恒河猴的繁殖季节是从10月到2月，而非繁殖季节是从3月到9月。在12个月的观察期内，恒河猴的月经周期模式和生殖器官呈现出明显的季节性变化。此外，子宫大小、体积和成像特征在繁殖季节和非繁殖季节之间存在显著差异。
