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Later in 1998, Dr. Yuan-Tsong Chen and colleagues at Duke University, using the enzyme produced in
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Chinese Hamster Ovary cells demonstrated for the first time that the enzyme can clear the glycogen
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and improved the muscle function in Pompe disease quail. The results of the work at Duke were
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impressive with one treated bird recovering to the point of being able to fly again.
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This was followed by production of clinical grade alpha-glucosidase in Chinese hamster ovary (CHO)
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cells and in the milk of transgenic rabbits. This work eventually culminated in the start of
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clinical trials with the first clinical trial including 4 babies receiving enzyme from rabbit milk
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at Erasmus MC Sophia Children's Hospital and 3 babies receiving enzyme grown in CHO cells at Duke
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University in 1999.
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The currently approved Myozyme is manufactured by Genzyme Corp. in Cambridge, Massachusetts. Its
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development was a complex process. Genzyme first partnered with Pharming Group NV who had managed
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to produce acid alpha-glucosidase from the milk of transgenic rabbits. They also partnered with a
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second group based at Duke University using Chinese hamster ovary cells. In 2001, Genzyme acquired
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Novazyme which was also working on this enzyme. Genzyme also had its own product (Myozyme) grown in
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CHO cells under development. In November 2001, Genzyme chief executive Henri Termeer organised a
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systematic comparison of the various potential drugs in a mouse model of Pompe disease. It was
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found that the Duke enzyme was the most efficacious, followed by Myozyme. However, due to easier
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manufacture of Myozyme, work on the other products was discontinued.
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Funding for research in this field was in part provided by the Muscular Dystrophy Association and
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the Acid Maltase Deficiency Association in the US, and by the Association of Glycogen Storage
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Disorders in the UK, as well as the International Pompe Association.
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John Crowley became involved in the fund-raising efforts in 1998 after two of his children were
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diagnosed with Pompe. He joined the company Novazyme in 1999, which was working on enzyme
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replacement treatment for Pompe. Novazyme was sold to Genzyme in 2001 for over US$100 million. The
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2010 film Extraordinary Measures is based on Crowley's search for a cure.
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As of 2019, many biomedical companies are developing Gene therapy in hopes of helping the body
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create alpha-glucosidase on its own.
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References External links
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GeneReview/NIH/UW entry on Glycogen Storage Disease Type II (Pompe Disease)
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Understanding Pompe Disease - US National Institute of Arthritis and Musculoskeletal and Skin
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Diseases
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Autosomal recessive disorders Hepatology Inborn errors of carbohydrate metabolism
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Lysosomal storage diseases Rare diseases
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The Dumaw Creek Site is an archaeological site designated 20OA5, located along Dumaw Creek northeast
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of Pentwater, Michigan, that was the location of a 17th-century village and cemetery. It is one of
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the youngest pre-historic sites in Michigan, dating to the terminal Late Woodland Period just
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prior to European contact. It was listed on the National Register of Historic Places in 1972.
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History
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The village that once stood at this location was likely inhabited in the early part of the 17th
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century (about 1605–1620, according to Quimby). The people occupying the village are thought to be
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the precursors of the modern Potawatomi people. It is likely that they were uprooted from this
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location soon after Samuel de Champlain's 1615 visit to the region, as warring tribes spilled into
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Michigan. Were they the Potawatomi people, they eventually made their way by the 1640s to the
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region around Sault Ste. Marie.
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Meanwhile, white pine grew up in the plain where the village stood. The pine was lumbered in
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1870-1880, after which the land was gradually converted to agricultural use, and was farmed as late
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as 1930. In the 1940s, oil was discovered in the area, and wells were installed.
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The Dumaw Creek site was originally discovered in 1915 by a farmer, Christoph "Carl" Schrumpf
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1854–1949, who was pulling a stump from his field. Schrumpf discovered 18 skeletons and various
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artifacts in 1915–16. These artifacts were catalogued by the Museum of Anthropology at the
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University of Michigan in 1924, but the artifacts and records were not generally well known by
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archaeologists. Schrumpf eventually sold the collection to a private dealer, and they eventually
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made their way, sans any identifying data, to George I. Quimby at the Field Museum in 1959.
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Quimby eventually tracked the source of the artifacts to the Dumaw Creek site, and in 1960-62 did
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some summer surface collection there. He also located other artifacts already dug from the site.
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Description
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The Dumaw Creek site is located on a sandy plain near Dumaw Creek, a tributary of the Pentwater
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River, at a site not easily accessible by canoe. The creek itself runs through a small valley
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about beneath the level of the plain. The site, covering , was used as a village and burial
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ground.
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The village is thought to have been a semi-permanent settlement with dome-shaped wigwams. The
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people hunted and fished, and grew corn and pumpkins.
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Artifacts
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Artifacts and features found at the site include burials, faunal remains, stone tools, bone tools,
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red ocher/mineral paint (used for ceremonial coloring), copper artifacts, shell artifacts, tobacco
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pipes, animal skins, and vegetal and textile remains.
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At least nineteen, and perhaps as many as 55 skeletons were removed from burial sites in the Dumaw
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Creek site. The bodies were wrapped in furs and buried with stone implements and copper beads.
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The stone implements found include arrowheads, knives, and scraping tools of chipped flint and axes
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of a hard, granular stone. Quimby reports that 99% of the stone tools were small triangular points
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or arrowheads, aka Madison points, indicative of a Late Woodland period placement. There were also
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a considerable number of copper artifacts found at the site. Many were large bead-like tubes of
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copper known as hair pipes, which were worn as hair ornaments. There were also other, generally
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smaller copper beads, conical decorations, and copper plaques, as well as shell beads and pendants.
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Carved stone pipe bowls were also found, as well as animal skins and pottery.
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The pottery is described by Quimby as grit-tempered vessels with round-bottomed, globular forms
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with broad orifices and slightly flaring rims. The rim edges are often scalloped or crimped. The
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vessel pictured below with a scalloped rim has been compared to the Moccasin Bluff Scalloped type
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from the Moccasin Bluff site on the St. Joseph River in southwestern Michigan. This pottery type
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is diagnostic of a Late Woodland period temporal placement, just before European contact. There was
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also a shell pendant with a "weeping eye" design as shown below. This motif has been seen in other
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Late Prehistoric sites in the Great Lakes area.
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References
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Buildings and structures in Oceana County, Michigan
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Archaeological sites on the National Register of Historic Places in Michigan
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National Register of Historic Places in Oceana County, Michigan Potawatomi Late Woodland period
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Dag Ivar Wirén (15 October 1905 – 19 April 1986) was a Swedish composer.
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Life
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Wirén was born at Striberg near Nora. His father had a roller blind factory, and there were
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various musical activities in the family home; he took piano lessons, and was a student at the
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Karolinska school in Örebro, and played the bass drum and celesta in the town orchestra.
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Wirén studied at the Stockholm conservatory from 1926 to 1931, which gave him much exposure to
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music from all periods; hearing Arthur Honegger's oratorio King David in 1927 was an important
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experience.
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In 1932 he won the state stipend and used the award money to continue his studies in Paris, where
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he lived from 1931 to 1934. While there, he studied composition under the Russian composer Leonid
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Sabaneyev, though he admitted later that his endless attendance of concerts, and not his tutoring
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with Sabaneyev, had the greater impact on his own work. In Paris he met Igor Stravinsky (as well as
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his compatriot Gösta Nystroem) and was exposed to the music of Stravinsky, Sergei Prokofiev and the
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French composers of Les Six.