Publications by authors named "Sara P Hansen"

Article Synopsis
  • A purification process for smallpox vaccines was developed using a combination of pseudo-affinity membrane adsorbers and hydrophobic interaction chromatography to effectively remove contaminants.
  • Different ligands and buffers were tested to optimize the binding and elution of virus particles, leading to variable recovery rates based on batch and conditions.
  • The best combination achieved a virus recovery rate of 55-76% with a final DNA content of 0.01-2.5% and minimal protein contamination, ensuring a high level of infective virus particles.
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Smallpox is an acute, highly infectious viral disease unique to humans, and responsible for an estimated 300-500 million deaths in the 20th century. Following successful vaccination campaigns through the 19th and 20th centuries, smallpox was declared eradicated by the World Health Organization in 1980. However, the threat of using smallpox as a biological weapon prompted efforts of some governments to produce smallpox vaccines for emergency preparedness.

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Recently, it has been shown that mutations in the P2 promoter of the hepatocyte nuclear factor (HNF)-4 alpha gene (HNF4A) cause maturity-onset diabetes of the young (MODY), while single nucleotide polymorphisms in this locus are associated with type 2 diabetes. In this study, we examined 1,189 bp of the P2 promoter and the associated exon 1D of HNF4A for variations associated with diabetes in 114 patients with type 2 diabetes, 72 MODYX probands, and 85 women with previous gestational diabetes mellitus. A -192c/g mutation was found in five patients.

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