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Full-Text Articles in Medicine and Health Sciences

How Climate Change May Threaten Progress In Neonatal Health In The African Region, Britt Nakstad, Veronique Filippi, Adelaide Lusambili, Nathalie Roos, Fiona Scorgie, Matthew F. Chersich, Stanley Luchters, Sari Kovats Jul 2022

How Climate Change May Threaten Progress In Neonatal Health In The African Region, Britt Nakstad, Veronique Filippi, Adelaide Lusambili, Nathalie Roos, Fiona Scorgie, Matthew F. Chersich, Stanley Luchters, Sari Kovats

Institute for Human Development

Climate change is likely to have wide-ranging impacts on maternal and neonatal health in Africa. Populations in low-resource settings already experience adverse impacts from weather extremes, a high burden of disease from environmental exposures, and limited access to high-quality clinical care. Climate change is already increasing local temperatures. Neonates are at high risk of heat stress and dehydration due to their unique metabolism, physiology, growth, and developmental characteristics. Infants in low-income settings may have little protection against extreme heat due to housing design and limited access to affordable space cooling. Climate change may increase risks to neonatal health from weather …


Physiological Mechanisms Of The Impact Of Heat During Pregnancy And The Clinical Implications: Review Of The Evidence From An Expert Group Meeting, Louisa Samuels, Britt Nakstad, Nathalie Roos, Ana Bonell, Matthew Chersich, George Havenith, Stanley Luchters, Louise-Tina Day, Jane E. Hirst, Tanya Singh May 2022

Physiological Mechanisms Of The Impact Of Heat During Pregnancy And The Clinical Implications: Review Of The Evidence From An Expert Group Meeting, Louisa Samuels, Britt Nakstad, Nathalie Roos, Ana Bonell, Matthew Chersich, George Havenith, Stanley Luchters, Louise-Tina Day, Jane E. Hirst, Tanya Singh

Population Health, East Africa

Many populations experience high seasonal temperatures. Pregnant women are considered vulnerable to extreme heat because ambient heat exposure has been linked to pregnancy complications including preterm birth and low birthweight. The physiological mechanisms that underpin these associations are poorly understood. We reviewed the existing research evidence to clarify the mechanisms that lead to adverse pregnancy outcomes in order to inform public health actions. A multi-disciplinary expert group met to review the existing evidence base and formulate a consensus regarding the physiological mechanisms that mediate the efect of high ambient temperature on pregnancy. A literature search was conducted in advance of …


Acute Phase Proteins, Endocrine And Productive Responses Of Laying Hens To Heat Stress, Amani Aldawood, Hosam Altamimi Jan 2022

Acute Phase Proteins, Endocrine And Productive Responses Of Laying Hens To Heat Stress, Amani Aldawood, Hosam Altamimi

Turkish Journal of Veterinary & Animal Sciences

This study was designed to characterize changes in the acute phase proteins (APPs), hormones parallel to performance, and egg quality traits in laying hens exposed to heat stress (HS). A total of 120 sixteen-week-old Lohmann hens was allowed an adaptation period of 5 weeks in 3 different rooms at 21 °C. The hens were then exposed to one of three climatic thermal treatments over the next 6 weeks; thermoneutrality (TN, 21 °C), constant (C-HS, 28 °C), and cyclic HS (HS, 20 h/d at 28 ± 1 °C and 4 h/d at 33 ± 1 °C). Blood samples were weekly obtained, …


Cryopreservation Of Nili-Ravi Buffalo Bull Semen: Yearly Postthaw Analyses To Depict Climatic Effects, Ejaz Ahmad, Muhammad Shakeel, Zahid Naseer, Adeel Ahmed, Mudussar Nawaz, Muhammad Saleem Akhtar Jan 2022

Cryopreservation Of Nili-Ravi Buffalo Bull Semen: Yearly Postthaw Analyses To Depict Climatic Effects, Ejaz Ahmad, Muhammad Shakeel, Zahid Naseer, Adeel Ahmed, Mudussar Nawaz, Muhammad Saleem Akhtar

Turkish Journal of Veterinary & Animal Sciences

The present study was aimed to observe the postthaw quality of Nili-Ravi buffalo bull semen cryopreserved during heat stress (hot summer months) and normal climatic conditions (fall, winter, and spring months). For this purpose, four (n = 4) adult regular donor Nili-Ravi buffalo bulls were selected to collect and cryopreserve their semen throughout the period of an entire year. The cryopreservation of semen was done following standard freezing protocol. The semen doses cryopreserved during heat stress and normal climatic condition were thawed to determine the sperm motility, motion kinetics, viability, plasma membrane integrity, acrosomal integrity, and morphological abnormalities (head, mid-piece, …