Publications by authors named "A R Coetzee"
Background: Blood group incompatibility previously represented an obstacle to living related donor (LRD) options; desensitization modalities have expanded LRD options. ABO-incompatible kidney transplants have been successful in adults and pediatric liver transplants, but to date not yet in pediatric kidney transplants in South Africa.
Case Report: Patient X is a 5 year old male with end-stage kidney failure due to Posterior Urethral Valves, requiring peritoneal dialysis pre-transplant.
Article Synopsis
- - Supplementary sugar-water feeders provide a concentrated food source for nectarivorous birds, which might affect their visits to native flowers and the relationship between birds and plants, especially in younger, post-fire areas.
- - A study at Grootbos Private Nature Reserve in South Africa tested these feeders during low (winter) and high (spring) floral abundance to see how they impacted bird behavior and flower visitation.
- - Results showed that while birds used sugar-water feeders more in winter when flowers were scarce, overall bird visits to flowers remained higher than to feeders, suggesting that feeders don't compete with natural food sources but offer an extra option, particularly when flowers are less abundant.
Introduction: Triphallia, a rare congenital anomaly describing the presence of three distinct penile shafts, has been reported only once in the literature. This case report, based on an extensive literature review, describes the serendipitous discovery during cadaveric dissection of the second reported human case of triphallia, distinctly morphologically different from the previous case.
Case Presentation: Despite the normal appearance of external genitalia on examination, the dissection of a 78-year-old white male revealed a remarkable anatomical variation: two small supernumerary penises stacked in a sagittal orientation posteroinferiorly to the primary penis.
Pollen transfer efficiency (PTE; the proportion of pollen removed from flowers that reaches conspecific stigmas) is expected to vary with the type of pollinator and flower morphology, and to influence male siring success. Many species in the genus are pollinated by bees (which consume pollen and should thus lower PTE) but during its radiation in the Cape, several independent shifts to both sunbird and long-proboscid fly (LP fly) pollinators, which do not consume pollen have taken place. Improvements in PTE could be one of the factors driving these pollinator shifts.
View Article and Find Full Text PDFIntroduction: In South Africa, only children considered eligible for transplantation are offered dialysis as bridge to kidney transplantation. Maintenance peritoneal dialysis (PD) is preferred and has several advantages over hemodialysis (HD). While awaiting transplantation, PD may be discontinued due to permanent transfer to HD or death while on PD, of which the occurrence and burden is not known in our setting.
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