Correlation of IGF2 levels with sperm quality, inflammation, and DNA damage in infertile patients.

Insulin-like growth factor 2 (IGF2) is a critical endocrine mediator implicated in male reproductive physiology. To investigate the correlation between IGF2 protein levels and various aspects of male infertility, specifically focusing on sperm quality, inflammation, and DNA damage, a cohort of 320 male participants was recruited from the Women's Hospital, Zhejiang University School of Medicine (Hangzhou, China) between 1st January 2024 and 1st March 2024. The relationship between IGF2 protein concentrations and sperm parameters was assessed, and Spearman correlation and linear regression analysis were employed to evaluate the independent associations between IGF2 protein levels and risk factors for infertility.

The role of short daily hemodialysis in the control of hyperphosphatemia, secondary hyperparathyroidism and anemia.

Background: Hyperphosphatemia, secondary hyperparathyroidism (SHPT) and anemia are common secondary complications in hemodialysis patients with end-stage renal disease (ESRD). Compared with conventional hemodialysis (CHD), short daily hemodialysis (sDHD) has been found to be more effective in patients with ESRD. The objective of this study was to determine whether sDHD could improve hyperphosphatemia, SHPT and anemia in patients with ESRD.

Carbon sequestration in two alpine soils on the Tibetan Plateau.

Soil carbon sequestration was estimated in a conifer forest and an alpine meadow on the Tibetan Plateau using a carbon-14 radioactive label provided by thermonuclear weapon tests (known as bomb-(14)C). Soil organic matter was physically separated into light and heavy fractions. The concentration spike of bomb-(14)C occurred at a soil depth of 4 cm in both the forest soil and the alpine meadow soil.

Carbon balance in an alpine steppe in the Qinghai-Tibet plateau.

Carbon fluxes were measured using a static chamber technique in an alpine steppe in the Qinghai-Tibet Plateau from July 2000 to July 2001. It was shown that carbon emissions decreased in autumn and increased in spring of the next year, with higher values in growth seasons than in winters. An exponential correlation (E(carbon)= 0.

[Estimation of net primary productivity in middle reaches of Yarlung Zangbo River and its two tributaries].

Based on the MODIS data and field measurement, the net primary production (NPP) in 2000 and 2006 in the middle reaches of Yarlung Zangbo River and its two tributaries in Tibet were estimated by using a mathematic model. The results showed that in study area, the NPP decreased gradually from valley to ridge, which was accorded with the gradients of precipitation and temperature. The annul NPP per unit area was averagely 86.

Spatial variations in daily average CO2 concentrations above wetland surface of Xianghai National Nature Reserve, China.

Horizontal and vertical variations of daily average CO2 concentration above the wetland surface were studied in Xianghai National Nature Reserve of China in August, 2000. The primary purpose was to study spatial distribution characteristics of CO2 concentration on the four levels of height(0.1 m, 0.