Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042961 (volvulus)
 4,305 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 39-year-old Japanese man with a splenic hamartoma who underwent surgery, is reported herein. The patient had a volvulus of the transverse colon and acute Type A hepatitis. His symptoms included fever, abdominal pain and icterus and the serum chemistry showed liver dysfunction and an elevation of hepatitis A antibody levels. Barium enema revealed a volvulus of the transverse colon. Ultrasonogram showed a hypoechoic mass and angiogram showed evidence of stretching of the intrasplenic vessels in the arterial phase and a hypovascular mass lesion in the venous phase. Macroscopically, the tumor was a well-defined, whitish-yellow, hard nodule. Microscopically, the tumor was composed of fibrous scar tissue containing scattered red pulp tissues and the histologic diagnosis was a splenic hamartoma of the fibrous type. The patient's postoperative recovery was uneventful. The clinical features of splenic hamartoma are reviewed in this report and the differential diagnosis is also discussed.
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PMID:Splenic hamartoma: report of a case and review of the literature. 267 8

This full term male infant required a 90% enterectomy for congenital intestinal volvulus shortly after birth. The remaining small bowel consisted of 8 cm of proximal jejunum anastomosed to 5 cm of terminal ileum. The ileocecal valve was intact. Parenteral nutrition was administered for the first 21 months, including 17 months of home parenteral nutrition. The child's oral diet was mother's milk until 28 months of age when he was switched to an elemental diet. Solids were introduced at 6 months of age. Presently, at 36 months of age, the infant is off parenteral nutrition and is maintaining good nutritional status on a diet of 150 calories per kilo per day. His major problem has been an extreme allergy to cow's-milk protein. This infant is remarkable, since, despite record short bowel length, he maintained a completely normal growth and development, had remarkably few serious complications, spent relatively little time in hospital, and has documented improvement of G.I. absorption and radiographic contrast studies.
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PMID:Extreme short-bowel syndrome in an infant. 641 37

Rotational gut abnormalities are generally considered a disease process of the neonatal and pediatric populations. However, they may first become manifest in teenagers and adults, often with disastrous outcomes. A case of a 15-year-old boy who presented in shock with an acute abdomen is presented. His symptoms had been mistaken for 1 week as gastroenteritis. At surgery, he was found to have a midgut volvulus. A differential diagnosis is discussed, as well as an anatomical review and typical symptomatology associated with midgut abnormalities.
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PMID:Midgut volvulus: an unusual case of adolescent abdominal pain. 816 89

Eukaryotic transcription factors can be identified and classified according to conserved DNA-binding motifs and conserved regulatory domains. The functional and structural analysis, and the conservation of these genes among metazoans emphasizes the importance of these DNA-binding proteins in development and differentiation. In order to identify genes with common DNA-binding motifs in the genome of Onchocerca volvulus we have cloned a zinc finger encoding gene of the structure C2-H2. Using the Caenorhabditis elegans sex determining tra-1 gene as a probe we have identified two tra-1 related genes in the genome of O. volvulus. The zinc finger region of one of these genes (OvZf1) was subcloned and sequenced. The predicted protein has at least eight consecutive zinc fingers and each finger possesses the characteristic paired cysteine- and histidine residues and the proper spacing of the amino acids between the conserved residues.
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PMID:Identification of a zinc finger encoding gene in Onchocerca volvulus. 825 86

Glutathione metabolism represents a potential target for anti-parasite drug design. The central role of glutathione reductase (GR) in maintenance of the thiol redox state and in anti-oxidative defence has to be evaluated in more detail in order to establish the essential function of this enzyme for the survival of the filarial parasite Onchocerca volvulus. The O. volvulus GR (OvGR) gene was cloned and sequenced. The gene is composed of 13 exons and 12 introns and spans 4065 bp. The first intron is located within the 5'-untranslated region of the gene, 16 nucleotides upstream of the translation initiation codon. Southern-blot analysis and structural characterization of the genomic sequence indicate that OvGR is encoded by a single-copy gene. Isolation of various cDNA clones revealed a polymorphism of polyadenylation initiation with no consensus polyadenylation sites in any of the cDNAs analysed. The entire cDNA is 1977 bp long and carries the nematode-specific spliced leader sequence SL1 at its 5' end, 236 nucleotides upstream of the first in-frame methionine. The cDNA codes for a polypeptide of 462 amino acids with 53.5% sequence identity with human GR (HsGR). A total of 18 out of 19 residues contributing to glutathione binding are identical in OvGR and HsGR. However, one of the arginine residues (Arg-224 in HsGR) involved in discrimination between NADPH and NADH in all known GRs is substituted by tryptophan (Trp-207 in OvGR). The coding region of OvGR was expressed in Escherichia coli as a histidine-fusion protein, and it was established that the parasite protein still favours the binding of NADPH (Km 10.9 microM) over NADH (Km 108 microM). The histidine-fusion protein has a subunit size of 54 kDa and is active as a homodimer of 110 kDa.
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PMID:Molecular characterization and expression of Onchocerca volvulus glutathione reductase. 927 Oct 84

The peroxidoxin protein of the filarial parasite Onchocerca volvulus (OvPXN-2) belongs to a group of highly conserved antioxidant molecules. For a more detailed characterization of this protein and for determination of its expression pattern the OvPXN-2 protein was recombinantly expressed as a His-tagged protein. Under reducing conditions the recombinant protein had an apparent molecular mass of 28 kDa. Considering the size of the His-tag and the FLAG epitope introduced to the recombinant protein, this size is in agreement with that of the native protein identified in O. volvulus extract. Antiserum raised against the recombinant protein was used for immunolocalization. In O. volvulus the antigen is predominantly expressed in the hypodermis and particularly the lateral and median chords show high levels of expression. The protein is also expressed strongly in the hypodermis of infective larvae and more weakly in microfilariae. Related cross-reacting proteins were detected in several Onchocerca species and other filariae. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis in combination with Western blotting revealed proteins with almost identical mobility in extracts prepared from O. ochengi, O. gibsoni, and Dirofilaria immitis.
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PMID:The peroxidoxin 2 protein of the human parasite Onchocerca volvulus: recombinant expression, immunolocalization, and demonstration of homologous molecules in other species. 974 34

Infantile pyloric stenosis is one of the most common conditions requiring surgery during the first few weeks of life. The association of infantile pyloric stenosis with gastric volvulus in an extremely uncommon occurrence. A 10-month-old male infant operated for infantile pyloric stenosis at two months of age is presented. His current problem was recurrent pulmonary infections and he was diagnosed to have organoaxial gastric volvulus and gastroesophageal reflux. The common features of presentation, radiological findings, surgical procedures and possible mechanisms of gastric volvulus associated with infantile pyloric stenosis are discussed.
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PMID:A rare coexistence of two gastric outlet obstructive lesions: infantile hypertrophic pyloric stenosis and organoaxial gastric volvulus. 1073 80

This is a report of a 54-year-old schizophrenic patient with a 15-year history of ingesting metal objects (pica). He presented with severe anemia (hemoglobin of 3 g/dl and hematocrit of 8.3%) and leukopenia (white blood count of 1,300/mm3). Work-up revealed copper deficiency (copper level of <0.05 microg/ml) and elevated zinc levels (280 microg/ml). The zinc toxicity was produced by the zinc content in the coins ingested by the patient over a period of many years. He was initially treated with -acetylcysteine and sodium bicarbonate followed by intravenous copper sulfate. He was also placed on Adolph's meat tenderizer and pancreatin thrice a day orally to loosen the massive amount of metallic objects including coins in his bowel and allow them to pass out in his feces. He was also continued on oral copper sulfate. His copper levels began to rise and reached a maximum of 0.72 microg/ml, and his zinc level fell to 153 microg/ml. However, as he refused surgery to remove the metal objects from his bowel and continued to ingest more coins, there was continued absorption of zinc, which later overcame the efforts to reduce the zinc level and increase copper levels in his blood. He finally succumbed to sepsis and multiorgan failure. Autopsy revealed a coin mass in the stomach weighing 1,870 grams in addition to a sigmoid volvulus caused by another coin bezoar in the colon.
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PMID:Case report of sideroblastic anemia caused by ingestion of coins. 1142 Dec 92

Even though it was not until 1950 that Barrett introduced the term "reflux esophagitis", this entity is now the most common disease afflicting the western world. Diaphragmatic herniation, recognized by Sennertus in 1541, was first repaired by Potemski (1889). Before World-War II, the condition was considered rare; symptomatology, as in external herniae, was ascribed to pinching of the stomach by the hernial ring. Only large protrusions, with signs of impending incarceration, volvulus, or strangulation, were operated upon. Modern understanding derives from studies of short, strictured esophagi. Because of endoscopic "gastric" biopsies in children, Findlay and Kelly considered them congenital "misplacements". However, Allison (1943), finding adults with ulceration and scarring, argued they were acquired. Later (1953) he concluded that the distal esophagus may be lined with metaplastic adenomatous epithelium which can harbor malignancy. His repair, reestablishing the crural pinchcock was, as pointed out by his countryman Collis (who in 1957 constructed a neo-esophagus from the Magenstrasse), inadequate. Nissen performed (1936) gastroesophagectomy in a case of peptic ulceration of the cardia. To avoid leakage he buried the anastomosis. Amazingly, 17 years later he learned that the patient had no reflux. He then successfully performed and reported (1956) fundoplication in a man and woman with gastroesophageal reflux disease. His operation remains the basis for surgical therapy today.
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PMID:The contribution of Allison and Nissen to the evolution of hiatus herniorrhaphy. 1200 49

Protein kinases exert major regulatory effects in eukaryotic signaling events. As these proteins play central regulatory and sensory functions they are interesting targets for antiparasitic drug development and serve as vaccine candidates. A cDNA with an open reading frame of 1122 bp coding for the regulatory subunit of the cAMP-dependent protein kinase (Ov-pka-r) of the pathogenic human nematode Onchocerca volvulus has been isolated. The predicted protein displays 84% homology to the corresponding protein of Caenorhabditis elegans and 71% to the human homologue. The O. volvulus protein has unique features, it includes six cysteine residues, as compared to four residues in mammals. Ov-PKA-r was recombinantly expressed as His-tagged protein and under reducing conditions showed a molecular mass of 52 kDa. In sera from O. volvulus patients IgG antibodies were found that strongly reacted with the recombinant Ov-PKA-r. Using rabbit antisera raised against the recombinant protein for immunohistology allowed the localization of the native Ov-PKA-r within the nervous system and sensory organs of adult O. volvulus worms and of microfilariae. The predominant expression in the nervous system and sensory organs as well as the unique structural features identify this signaling molecule of O. volvulus as a new and interesting target for drug or vaccine development.
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PMID:Isolation and characterization of the regulatory subunit of cAMP-dependent protein kinase from the filarial parasite Onchocerca volvulus. 1270 94


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