Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0030305 (pancreatitis)
 16,014 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Recent data suggest that genetic alterations are relevant risk factors for chronic pancreatitis. The highest risk is associated with autosomal-dominant mutations (N29I, R122H) of the cationic trypsinogen (PRSS1). Further mutations were identified in the genes of the pancreatic trypsin inhibitor (SPINK1) and in the cystic fibrosis transmembrane conductance regulator (CFTR). A remarkable finding was that both molecules were also mutated in patients suffering from alcoholic chronic pancreatitis. According to recent estimations, genetic alterations may be regarded as more severe risk factors than chronic alcohol consumption. To identify patients with mutations, a positive family history could be of help, but mutations were also found in a significant number of those with a negative family history. On the other hand, in approximately 40% of the patients with a positive family history no mutations were found up to now. The age at onset is lower in patients with genetic risk factors; however, no clear limit can be denominated above which a screening is not appropriate. Therefore, in our department genetic screening is offered to all patients with chronic pancreatitis of unclear origin. There is no specific treatment in patients with a genetically based disease. The patients with familial pancreatitis-increased rates of pancreas cancer were described but there is no agreement concerning the prophylactic strategy. Prevention of cancer by routine pancreatectomy, though performed recently, is not justified at the moment. Clinical criteria may be more appropriate to decide the timing and the extent of the operation.
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PMID:Identification of patients with genetic risk factors of pancreatitis: impact on treatment and cancer prevention. 1475 25

Mutations in the cationic trypsinogen gene are acknowledged as a risk factor for pancreatic cancer in patients with hereditary pancreatitis. However, whether patients with mutations in other genes, such as the serine protease inhibitor Kazal type 1 (SPINK1) gene, are also at a higher risk of pancreatic cancer remains unknown. We report a case of pancreatic cancer associated with chronic calcifying pancreatitis in a patient with a homozygous N34S mutation in the SPINK1 gene. A 44-year-old woman was hospitalized due to obstructive jaundice. Preoperative examination showed a tumor in the head of the pancreas and multiple pancreatic stones; pancreatoduodenectomy revealed a solid tumor, 3.0 x 2.5 cm in size, in the head of the pancreas, and numerous pancreatic stones throughout the pancreas. Pathologic studies revealed moderately differentiated tubular adenocarcinoma. Mutational analyses of the SPINK1 and PRSS1 genes in members of the patient's family were carried out. The homozygous N34S mutation in the SPINK1 gene was found in the patient and her older sister, who was previously diagnosed with chronic calcific pancreatitis and had undergone the Frey operation. The patient's parents and brother were unaffected carriers of the N34S heterozygous mutation. No family members had any mutations in the cationic trypsinogen gene. To our knowledge, this is the first reported case of chronic pancreatitis accompanied by pancreatic cancer in a patient with the SPINK1 N34S mutation. Although this case does not meet the classic criteria of hereditary pancreatitis, it does suggest that the SPINK1 N34S mutation may be associated with cancer development in patients with hereditary pancreatitis. Further prospective, multicenter trials investigating secondary screening for pancreatic cancer in hereditary pancreatitis are necessary to clarify the role of SPINK1 mutations in the development of pancreatic cancer.
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PMID:Hereditary pancreatitis as the premalignant disease: a Japanese case of pancreatic cancer involving the SPINK1 gene mutation N34S. 1508 77

Inflammatory disease of the pancreas falls into two major classifications: acute and chronic. Acute pancreatitis is a reversible process, whereas chronic pancreatitis produces irreversible changes in the architecture and function of the pancreas. The recent finding that mutations in the gene encoding cationic trypsinogen are associated with hereditary pancreatitis, the identification of genes that increase the risk for developing chronic pancreatitis, and advances in cell biology have contributed greatly to our understanding of the molecular mechanisms leading to pancreatitis. Although pancreatitis is less common in children than in adults, it still occurs with regularity and should be considered in any child with acute or chronic abdominal pain. The major difference between pancreatitis in children and adults lies in the etiologies and outcome of acute pancreatitis and in the etiology of chronic pancreatitis. The treatment of acute and chronic pancreatitis is similar at all ages.
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PMID:Pancreatitis in childhood. 1512 92

Hereditary pancreatitis is an autosomal dominant condition characterized by recurrent episodes of acute pancreatitis, usually starting in childhood. We present a family who was ascertained when an 11-year-old girl presented with an episode of acute pancreatitis. Her father and other family members had also had recurrent bouts of acute pancreatitis. Genetic testing revealed a pathogenic mutation in the cationic trypsinogen gene in the proband, her father and her paternal grandmother. As far as we are aware, this is the first Aboriginal kindred with mutation-proven hereditary pancreatitis. Hereditary pancreatitis is an important differential diagnosis to consider in a patient with recurrent episodes of acute pancreatitis with no obvious precipitating cause. This family is of Aboriginal descent and the implications of the family's background are also discussed when considering the aetiology of the condition. We emphasize the need to ascertain a full family history from patients with a history of repeated episodes of acute pancreatitis and also emphasize the need to avoid ethnic stereotypes when assessing patients.
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PMID:Hereditary pancreatitis in a family of Aboriginal descent. 1526 95

Pancreatic cancer (PC) is the most fatal of all gastrointestinal cancers, wherein its mortality compares strikingly with its incidence. Unfortunately, 80-90% of PCs are diagnosed in the nonresectable stage. While the lifetime risk of PC in developed countries is approximately 1-3%, it is the fifth most common cause of cancer deaths among both males and females in Western countries. It occurs in excess in Jews. Approximately 5-10% of PC shows familial clustering. Examination of such familial clusters must take into consideration cancers of diverse anatomic sites, such as malignant melanoma in the familial atypical multiple melanoma (FAMMM) syndrome due to the CDKN2A (p16) germline mutation, and combinations of colorectal and endometrial carcinoma, ovarian carcinoma, and several other cancers in hereditary nonpolyposis colorectal cancer (HNPCC), which are due to mismatch repair germline mutations, the most common of which are MSH2 and MLH1 . Other hereditary disorders predisposing to PC include Peutz-Jeghers syndrome, due to the STK11 mutation, familial pancreatitis due to the cationic trypsinogen gene, site-specific familial pancreatic cancer which may be due to the 4q32-34 mutation, hereditary breast-ovarian cancer (HBOC) syndrome that is due to BRCA2 and possibly some families with HBOC that is due to BRCA1 , familial adenomatous polyposis due to the ATP gene, and ataxia telangiectasia due to the ATM germline mutation. This extant heterogeneity mandates that the physician be knowledgeable about these PC-prone syndromes which play such an important role when considering the differential diagnosis of hereditary PC. Unfortunately, there are no PC screening programs with acceptable sensitivity and specificity. However, the gold standard for screening at this time is endoscopic ultrasound. Clearly, there is a great need for the development of novel screening approaches with acceptable sensitivity and specificity. Further research is needed to elucidate those etiologic factors that contribute to the apparent excess of PC in Ashkenazi Jews. Attention should also be given to the search for mutations predisposing to PC in Jews so that opportunities to learn more about the disease's pathogenesis, as well as screening and control, may take place.
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PMID:Familial pancreatic carcinoma in Jews. 1551 47

Considerable progress in the understanding of the pathogenesis of acute pancreatitis is based on the conclusive finding that the initiation of the disease occurs within the acinar cell. Two lines of evidence have contributed to the progress in understanding the disease process: (1) the identification of patients with a hereditary form of pancreatitis as carriers of germline-mutations in the genes for cationic trypsinogen and the pancreatic secretory trypsin inhibitor and (2) the use of various transgenic and knock-out mouse strains in experimental models of acute pancreatitis. On the other hand, these studies have delivered several unexpected results that appear to be incompatible with long-standing dogmas and paradigms of pancreatic research. Further progress in knowledge will result if the well-characterized enzymatic properties of human enzymes that are involved in the initial activation cascade can be investigated under in vivo conditions in transgenic animals or in permanent acinar cell lines. Such studies will permit the development of effective strategies for the prevention and treatment of this disease.
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PMID:Early events in acute pancreatitis. 1552 14

Since the discovery of the cationic trypsinogen gene mutations in patients with hereditary pancreatitis, a variety of pancreatitis-associated gene mutations have been reported, including pancreatic secretory trypsin inhibitor and cystic fibrosis transmembrane conductance regulator. Although the patients with these mutations are rarely seen, genetic disorders inducing pancreatitis have provided us major breakthroughs to understand the molecular basis of the disease. Furthermore, the major stream in pancreatology has been evidenced in patients with hereditary pancreatitis: acute pancreatitis --> chronic pancreatitis --> pancreatic cancer. This report will focus on the pancreatitis-associated genes and the molecular mechanism of pancreatitis associating with these gene mutations.
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PMID:[Pancreatitis-associated gene mutations]. 1555 98

The classical feature of hereditary pancreatitis (HP) is characterized by recurrent episodes of acute pancreatitis or a priori chronic pancreatitis in several members of one family. In 1996, the identification of the first HP-associated mutation in the cationic trypsinogen gene provided a breakthrough in our understanding of the pathogenesis of chronic pancreatitis. In the following years, several different mutations in the same gene have been found in a large number of investigated families. Most intriguing, HP patients have a more than 50-fold increased risk of pancreatic ductal cancer in comparison with expected pancreatic cancers in the general population. Variants of the major intrapancreatic trypsin antagonist SPINK1 have implications for more common forms of chronic pancreatitis. Research has focussed on the SPINK1-N34S-mutation, which is closely associated with tropical, alcoholic, or "idiopathic" chronic pancreatitis. Chronic pancreatitis represents a variable part of the cystic fibrosis syndrome, which is caused by mutations in the gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR). Several groups have reported an increased prevalence of CFTR mutations in patients with chronic pancreatitis of different etiology. In this review, we summarize interesting clinical and biochemical features of genetic variants in these genes which are associated with chronic pancreatitis.
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PMID:Genetic aspects of chronic pancreatitis. 1556 96

The purpose of this study was to evaluate the cationic trypsinogen gene in miniature schnauzers for possible mutations. Genetic mutations have been linked with hereditary pancreatitis in humans. Four miniature schnauzers were selected on the basis of a clinical history of pancreatitis. One healthy miniature schnauzer and 1 healthy mixed breed canine were enrolled as controls. DNA was extracted from these canines using a commercial kit. Primers were designed to amplify the entire canine cationic trypsinogen cDNA sequence. A polymerase chain reaction (PCR) was performed and products were purified and sequenced. All sequences were then compared. The healthy control canine, a healthy miniature schnauzer, and the 4 miniature schnauzers with pancreatitis showed identical sequences of the cationic trypsinogen gene to the published sequence. We conclude that, in contrast to humans with hereditary pancreatitis, mutations of the cationic trypsinogen gene do not play a major role in the genesis of pancreatitis in the miniature schnauzer.
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PMID:Evaluation of the cationic trypsinogen gene for potential mutations in miniature schnauzers with pancreatitis. 1558 Dec 28

The identification of a specific mutation in the human cationic trypsinogen gene in large kindreds with hereditary pancreatitis was the key to understand the genetic background of chronic pancreatitis. Rapidly, other variants within the same gene were identified-even in small families with a minority of patients. Later, mutations of the most important intrapancreatic trypsin inhibitor SPINK1 were found with high prevalence in patients with idiopathic, tropical and alcoholic chronic pancreatitis. We summarize interesting genetic and biochemical findings, point to clinical features and review recommendations for genetic analysis, follow-up and cancer prevention.
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PMID:[Clinical implications of genetic risk factors of chronic pancreatitis]. 1565 84


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