Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011854 (type 1 diabetes)
 20,749 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Insulin dependent (IDD) and non-insulin dependent diabetes (NIDD) are separate disorders. Twin studies show that IDD cannot be entirely due to genetic causes as concordance is no more than about 50%, but there is some inherited predisposition to it as shown by HLA patterns. NIDD, on the other hand, is predominantly due to genetic causes since identical twins are nearly always concordant. Many cases of NIDD show chlorpropamide alcohol flushing (CPAF), a dominantly inherited feature which may precede the appearance of diabetes and thus act as a genetic marker for this type of diabetes. Diabetics who show chlorpropamide acohol flushing are less likely to develop retinopathy than those who do not. Genetic factors must therefore affect the incidence and severity of diabetic retinopathy. Chlorpropamide alcohol flushing is due to sensitivity to enkephalin. Enkephalin and other opioids affect carbohydrate metabolism and insulin release. It is possible therefore that they act as neurotransmitters and cause NIDD by a sympathetically mediated effect on the liver and pancreas--in other words, that as far as NIDD is concerned Claude Bernard's views on the cause of diabetes may have been right.
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PMID:Diabetes: the genetic connections. 39

The clinical features seen in 27 Ethiopian juvenile diabetics, which were similar to those of juvenile diabetics elsewhere, are summarized in this first published report from an African country of childhood diabetes. Control was difficult and admission to hospital frequent because of poverty, uncontrolled diets and irregular supplies of insulin. This group of childhood diabetics represents 9.8% of patients attending a diabetic clinic in Addis Ababa. Survey of the published information on diabetes mellitus in African populations reveals that most series do contain several children and a significant number of teenagers. It is concluded that juvenile diabetes mellitus is not rare in African countries.
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PMID:Juvenile diabetes mellitus in Ethiopians. 39 28

Insulin-dependent diabetes mellitus has been treated with four jet injections of insulin (regular insulin before each meal and intermediate insulin at bedtime) during self-monitoring of blood glucose levels. The blood glucose levels generally remain within 60 and 150 mg/dl.
Diabetes Care
PMID:Jet injection of insulin during self-monitoring of blood glucose. 40 Jan 27

The transmission behavior of insulin-dependent juvenile diabetes mellitus (JDM) has been studied with respect to its frequency in the relatives of JDM probands and its possible linkage to the HLA complex. Mathematical analysis shows that under a single locus hypothesis a very restricted range of incidence rates is possible in the full siblings of probands once the concordance rate in monozygotic (MZ) twins is specified. Specifically, for a given population prevalence of the disease, high concordance rates in MZ twins require high incidence rates in siblings, and low rates require low incidence rates, if a single locus model is th be valid. Moreover, if these rates do conform to a single locus model, then they give additional information about possible linkage between the purported JDM susceptibility gene and the HLA complex. By using observations on the identity by descent scores at the HLA locus of sibling pairs, both of whom are affected with JDM, it is shown that tight linkage of a disease susceptibility locus is possible only when the MZ twin and sibling incidence rates are low, whereas high rates support loose linkage. If the single locus model is rejected, then an alternative hypothesis, involving epistasis between a JDM susceptibility locus and genes in (or close to) the HLA complex can be suggested as a mechanism whereby JDM would appear to be linked to HLA within families while maintaining an association with HLA at the population level.
Diabetes 1979 Jun
PMID:Is juvenile diabetes determined by a single gene closely linked to HLA? 44 10

We studied the distribution of HLA-D--related (DRw) antigens in 40 patients with juvenile diabetes mellitus (JDM) and 79 matched controls. We found that DRw2 was significantly decreased in the JDM group, suggesting a protective effect of the antigen and that the decrease observed in B7 was secondary. HLA-DRw3 and HLA-DRw4 were increased in the diabetic group, and, as with B8/B15, these two antigen predisposed to the disease additively. The susceptibility for JDM was found to be more strongly related to HLA-DRw3 that to B8. On the other hand, B15 rather than DRw4 showed the stronger association with JDM. Moreover, we found that this second diabetogenic gene is associated primarily with B15 and only secondarily with Cw3, which is in linkage disequilibrium with B15. This study further emphasizes the immunogenetic heterogeneity of JDM.
Diabetes 1979 Jun
PMID:HLA-D--related (DRw) antigens in juvenile diabetes mellitus. 44 15

The sera for 88 parents and 9 siblings of 73 patients with insulin dependent diabetes mellitus in childhood and 437 controls matched in age and sex, were tested by the thyroglobulin and microsome-coated tanned red cell hemagglutination test (Fuji-Zoki Co. Tokyo). None of 73 children with diabetes mellitus had antithyroglobulin antibodies, whereas twelve (16.4%) had antimicrosomal antibodies compared with the incidence of 0.4% and 1.1%, respectively, in 437 controls. In the parents and siblings of these probands, thyroid antibodies were also found in increased incidence. The incidence of antimicrosomal antibodies in the 68 mothers was significantly higher than in controls matched for age and sex, but the incidence of the positive thyroid antibodies in the 20 fathers and 9 siblings was not significantly different from that in control populations. The incidence of thyroid antibodies tended to be higher, though not significant, in parents and siblings of diabetic children with positive thyroid antibodies than in those of diabetics with negative ones. These findings suggest that immunogenetic factors may be responsible for the pathogenesis of some cases of diabetes mellitus in childhood.
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PMID:Thyroglobulin and microsomal antibodies in patients with insulin dependent diabetes mellitus and their relatives. 47 13

We have briefly discussed immunogenetic studies of families with hyperglycemia which suggest the existence of at least four types of the disease: a) juvenile, insulin-dependent, ketosis prone diabetes determined by an autosomal recessive gene with 50% penetrance and in linkage with the HLA; b) juvenile, insulin-dependent, ketosis prone diabetes probably determined by an autosomal dominant gene; c) unidentified types of juvenile, insulin-dependent diabetes whose pathogenesis may be related to the HLA associations reported; and d) maturity onset type of hyperglycemia in the young, probably determined by an autosomal dominant gene. There are probably other forms of juvenile hyperglycemia. Some may depend on genes unrelated to the HLA, others may be mostly or totally environmental, rather than genetic.
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PMID:On the genetic heterogeneity of juvenile hyperglycemia. 49

In four cases of diabetes mellitus in juvenile dogs, clinical and clinicopathologic findings were similar to those of juvenile onset diabetes mellitus in man. However, histopathologic findings varied from the usual findings in the human disease, and lack of plasma insulin was not proved in the canine cases.
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PMID:Diabetes mellitus in the juvenile dog: a report of four cases. 50 Apr 65

Sensory nerve conduction velocity (NCV) and the vibratory sense (biothesiometry) were determined in 67 children and adolescents with insulin dependent diabetes. Age at onset of diabetes varied between 1-14 years (mean +/- S.D. 6.5 +/- 3.6) and the duration of diabetes between 4-17 years (7.7 +/- 3.4). Within +/- 3 months of the nerve function tests blood was drawn for determination of C-peptide and insulin antibodies (IgG and IRI). A low NCV (less than 50 m/s) in the sural nerve and/or an abnormal vibratory sense (greater than or equal to 1.0 microns) were found in 34 patients (50.7%). Measurable fasting serum C-peptide 0.04-0.60 pmol/ml (0.17 +/- 0.15) was found in 16 patients (23.9%). All but one patients had insulin antibodies with IgG 0.130-11.029 mU/ml (2.957 +/- 2.509) and total IRI 10-9120 muU/ml (1204 +/- 1723). In multiple regression analysis we did not find any correlation between nerve function and sex, age, or age at onset of diabetes, and there was only a weak relationship between NCV and duration. However, there was a positive correlation between NCV and C-peptide (p less than 0.001). Vibration sense was also better among patients with C-peptide (p less than 0.05). The results support the view that insulin deficiency contributes to peripheral diabetic neuropathy.
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PMID:Sensory nerve conduction velocity and vibratory sensibility in juvenile diabetics. Relationship to endogenous insulin. 52 41

Population studies in Israel have shown that Jews born in Europe or America have the highest prevalence of juvenile diabetes mellitus and Jews born in Asia or Africa, the lowest. The rate in the Israel born, regardless of the father's place of birth, is intermediate between those of the other two groups. The rates for the group from Europe/American and for the Israel-born group increased during the years 1963-68, while that for the Asia/Africa group did not change. It is speculated that the differences in the rates of juvenile diabetes mellitus are related to different frequencies of certain HLA antigens in the different groups or to different associations with susceptibility genes to juvenile diabetes.
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PMID:Juvenile diabetes mellitus. 52 82


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