Remco P. H. Peters

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Seroprevalence data of human herpesviruses (HHVs) are limited for sub-Saharan Africa. These are important to provide an indication of potential burden of HHV-related disease, in particular in human immunodeficiency virus (HIV)-infected individuals who are known to be at increased risk of these conditions in the Western world. In this cross-sectional study(More)
Sexually immature juvenile male rats received an injection of .3 M (20 ml/kg) lithium chloride (LiCl) during each of 8-10 pairings (spaced at 2-3-day intervals) with an estrous female. Approximately seven weeks later, these males displayed fewer copulatory behaviors in pairings with estrous females than saline control rats. Noncontingent .3 M LiCl(More)
Brief 50-kHz ultrasonic vocalizations are emitted by male rats during copulatory encounters with sexually receptive females. These vocalizations also occurred during pairings with estrous females in male rats whose copulatory behaviors had been associatively inhibited by LiCl-induced aversive contingencies. Longer 22-kHz calls, typically emitted during the(More)
INTRODUCTION Blood-stream infection (BSI) is one of the principle determinants of the morbidity and mortality associated with advanced HIV infection, especially in sub-Saharan Africa. Over the last 10 years, there has been rapid roll-out of anti-retroviral therapy (ART) and cotrimoxazole prophylactic therapy (CPT) in many high HIV prevalence African(More)
Staphylococcus aureus is a versatile pathogen of medical significance, using multiple virulence factors to cause disease. A prophylactic S. aureus 4-antigen (SA4Ag) vaccine comprising capsular polysaccharide (types 5 and 8) conjugates, clumping factor A (ClfA) and manganese transporter C (MntC) is under development. This study was designed to characterize(More)
BACKGROUND A pragmatic three-tiered approach to monitor the world's largest antiretroviral treatment (ART) programme was adopted by the South African National Department of Health in 2010. With the rapid expansion of the programme, the limitations of the paper-based register (tier 1) were the catalyst for implementation of the stand-alone electronic(More)
Prior research has demonstrated that both yohimbine, an alpha2-adrenergic antagonist, and naloxone, an opiate antagonist, facilitate components of copulatory behaviors in nonstressed male rats. In the present experiments, we demonstrate that these drugs differentially affect copulatory behaviors when the behavioral testing situation contained an aversive(More)
Opiate receptor involvement in tonic immobility was examined by administering various does of the opiate antagonist naloxone before measuring morphine-potentiated, shock-poteniated or unpotentiated tonic immobility in chickens. Naloxone attenuated morphine-potentiated, but not shock-potentiated or unpotentiated tonic immobility. Morphine-potentiated tonic(More)