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Query: UMLS:C0011849 (diabetes)
 277,896 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

30 patients aged between 45 and 78 years and who had suffered from transient global amnesia (TGA), were seen at the Department of Neurology, Pordenone Public Hospital, in the period 1978 to 1982. 25 patients had one or more risk factors for cerebrovascular disease, such as hypertension, cardiac abnormalities, diabetes and hyperlipidemia. EEG examination revealed abnormal activity only in 7 patients. Brain Computed Tomography showed cerebral atrophy in 10 and hypodense lesions in 3 patients. 16 patients had been followed up for a mean interval of 20 months. During the follow-up period, 4 patients had recurrent TGA and one had a transient ischemic attack in the vertebrobasilar arterial system. In the follow-up group, 15 patients showed permanent memory impairment. The high incidence of risk factors for cerebrovascular disease seems to confirm that TGA is probably due to transient cerebral ischemia. The high rate of permanent memory impairment, almost always connected with the coexistence of cerebrovascular risk factors, is not in agreement with the postulated good prognosis of TGA.
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PMID:Transient global amnesia. 651 86

A retrospective study was carried out covering 100 patients hospitalized at the Geneva Ophthalmological Clinic between 1973 and 1977, in whom an occlusion of the central retinal vein or one of its branches had been diagnosed. An attempt was made to assess the significance of the occurrence of venous occlusion and the relation between the angiographic fundus aspect, the general pathology, and the survival prognosis. The patients still alive were examined between 1982 and 1983, and the occurrence of general vascular pathology was compared with a control group. The results of this study indicate the important role played by arterial pathology (hypertension, arteriosclerosis, diabetes) in the pathogenesis of retinal vein occlusion. It was found that patients presenting an ischemic type of venous occlusion were in a higher risk category as regards the development of cardiac or cerebral ischemia.
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PMID:[Ocular venous thrombosis and general vascular pathology]. 674 39

One hundred and one patients below 45 years and showing objective signs of cerebral ischemia were studied retrospectively for pathogenic factors. Twelve were below 15 years; the male to female ratio was 1:1. Factors known as predisposing (heart disease, hypertension, hyperlipemia, diabetes mellitus or infectious diseases) and other possible factors (e.g. trauma, abuse) were found in 41 patients. Among women using contraceptive pills there might be an increased risk of development of cerebral thrombosis, but the material was not large enough to warrant statistical analysis. In 64 patients one or more abnormal coagulation values were found, the most frequent being a deficient vessel wall fibrinolysis, which was noted in 38%. We therefore consider it worthwhile to investigate the fibrinolytic defence mechanism of the vessel wall in patients with cerebral thrombosis, since it is possible to treat this condition with specific fibrinolytic stimulating agents.
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PMID:Coagulation studies in children and young adults with cerebral ischemic episodes. 732 67

56 cerebral ischemia patients up to the age of 40 were investigated using a strict clinical and instrumental protocol in order to elicit the relative importance of the various iatrogenic factors involved. In addition to atherosclerosis risk factors (smoking, hypertension, ischemic heart disease, diabetes, dyslipidemia) other possible causes of cerebral ischemia were sought (arteritis, migraine, head injury, oral contraceptives, coagulation disorders, cardiogenic embolism, etc.). 50% of the patients examined had at least two atherosclerosis risk factors and 55% had other causes singly or in association with atherosclerosis.
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PMID:Cerebral ischemia in young adults. 733 59

We present an analysis of the neurologic manifestations of Staphylococcus aureus infections in 43 patients. Half of the infections whose source could be identified were nosocomial. The spectrum of neurological sequelae included meningitis, solitary and multiple intracerebral and epidural abscesses, cerebral ischemia and hemorrhage, acute encephalopathies, subdural empyemas, spinal abscesses, and radicular compression syndromes. In the majority of patients the course was severe and protracted and relapses were frequent. Mortality was high (28%), even with early diagnosis and treatment; diabetes mellitus, alcohol abuse, and chronic renal failure were unfavorable prognostic factors. In patients with abscess formation early surgical drainage improved the outcome. However, often treatment was complicated by sequestration at inaccessible foci and secondary dissemination. Combined antibiotic therapy with flucloxacillin and chloramphenicol may be the most successful antibiotic regimen.
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PMID:Neurologic manifestations of Staphylococcus aureus infections. Analysis of 43 patients. 752 54

Cerebral infarction (stroke) is a potentially disastrous complication of diabetes mellitus, principally because the extent of cortical loss is greater in diabetic patients than in nondiabetic patients. The etiology of this enhanced neurotoxicity is poorly understood. We hypothesized that advanced glycation endproducts (AGEs), which have previously been implicated in the development of other diabetic complications, might contribute to neurotoxicity and brain damage during ischemic stroke. Using a rat model of focal cerebral ischemia, we show that systemically administered AGE-modified bovine serum albumin (AGE-BSA) significantly increased cerebral infarct size. The neurotoxic effects of AGE-BSA administration were dose- and time-related and associated with a paradoxical increase in cerebral blood flow. Aminoguanidine, an inhibitor of AGE cross-linking, attenuated infarct volume in AGE-treated animals. We conclude that AGEs may contribute to the increased severity of stroke associated with diabetes and other conditions characterized by AGE accumulation.
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PMID:Neurotoxicity of advanced glycation endproducts during focal stroke and neuroprotective effects of aminoguanidine. 773 77

We determined the effect of 4-5 weeks of diabetes on ATP recovery following global incomplete cerebral ischemia. 31P magnetic resonance spectra of ATP, intracellular pH (pHi), and CBF (radiolabeled microspheres) were measured in three groups of anesthetized dogs (n = 8/group): chronic hyperglycemic diabetes (pancreatectomy followed by blood glucose of > 10 mM for 4-5 weeks); acute hyperglycemia (blood glucose of > 10 mM) during ischemia and reperfusion in nondiabetic dogs; and normoglycemic controls. Twenty minutes of incomplete ischemia was produced by ventricular fluid infusion to keep cerebral perfusion pressure (CPP) at 10 mm Hg during spontaneous variations in MABP. Intracranial pressure was increased initially to similar levels, resulting in a similar Cushing response among the groups. However, during the final 8 min of ischemia, MABP decreased to a greater extent in diabetic (86 +/- 42 mm Hg) than in hyperglycemic (162 +/- 30 mm Hg) and normoglycemic (135 +/- 54 mm Hg) groups and remained lower throughout 3 h of reperfusion. CPP was kept constant during ischemia, but was lower throughout reperfusion in diabetic dogs. During ischemia CBF was reduced similarly among groups: 5 +/- 3 ml.min-1 x 100 g-1 in hyperglycemic and normoglycemic and 4 +/- 3 ml.min-1 x 100 g-1 in diabetic dogs. During reperfusion early hyperemia was attenuated and delayed hypoperfusion was augmented (7 +/- 17 ml.min-1 x 100 g-1 by 180 min) as a result of low perfusion pressure in diabetics. However, medullary blood flow was similar among groups.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Poor hemodynamic and metabolic recovery after global incomplete cerebral ischemia associated with short-term diabetes in dogs. 779 Apr 17

1. K channels are a diverse and ubiquitous class of proteins that regulate a number of biological functions. 2. Ligands for the study of a variety of K channels are available. These include "openers" and antagonists for the ATP sensitive K channel and peptide toxins such as apamin and charybdotoxin that block other subtypes. 3. Antagonists of the ATP sensitive K channel are useful in the treatment of type II diabetes while "openers" of this channel are being tested in asthma and cardiovascular disease. 4. Intracerebroventricular administration of K channel "openers" block experimentally induced seizures in rodents through a hyperpolarization of neurons. K channel openers may also be useful in the treatment of neurodegenerative diseases, pain and cerebral ischemia. 5. A key to the development of psychopharmacological agents to modify brain K channel function is CNS selectivity. The promise of the ATP sensitive K channel openers suggests a bright future for this mechanism.
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PMID:ATP sensitive potassium channels: potential drug targets in neuropsychopharmacology. 784 82

A total of 1780 patients without symptoms of cerebral ischemia undergoing coronary artery bypass grafting (CABG) were screened before surgery for carotid stenosis by pneumophlethysmography. An abnormal test was defined as a difference in ophthalmic artery pressures of > or = 5 mmHg or ophthalmic-brachial pressure index < or = 0.69. Some 99 patients (5.6%) had an abnormal ocular pneumoplethysmographic measurement (89 unilateral, ten bilateral). Of these, 26 patients underwent prophylactic carotid endarterectomy before CABG (group 1), while the remaining 73 patients had reconstruction without previous carotid endarterectomy (group 2). A total of 100 patients (group 3) with normal ocular pneumoplethysmographic results were used as controls. The three groups were comparable with respect to age, diabetes, hypertension, smoking and severity of coronary artery disease. Early (30-day) postoperative stroke rates were 0 and 4% (n = 3) for groups 1 and 2 respectively, and 0% for group 3 (P > 0.07). Early mortality rates after CABG for groups 1 and 2 were 4% (n = 1) and 1% (n = 1), respectively and 2% (n = 2) for groups 3 (P > 0.4). Late follow-up (mean 48 months) demonstrated stroke rates of 0% for group 1, and 10% and 4% for groups 2 and 3 (P > 0.08). The early mortality and stroke rates in the ten patients with bilateral abnormal ocular pneumoplethysmographic values were 0 and 0%. However, late strokes occurred significantly more often (43%) in patients with bilateral abnormal results compared with those with unilateral abnormal findings when both groups did not undergo carotid endarterectomy (P < 0.04).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Outcome of patients with abnormal ocular pneumoplethysmographic measurements undergoing coronary artery bypass grafting. 804 59

This article addresses contraceptive issues for teenagers; women in the perimenopausal, postpartum, and postabortion periods; women with hematological disorders (e.g., acquired hemolytic anemia); women suffering from migraine; women with diabetes; and women with epilepsy. Specifically, it discusses how women's contraceptive needs change as they age. For example, the ideal method for perimenopausal women, who generally do not want to risk pregnancy, is male or female sterilization. The article also informs the reader what methods are most appropriate at the different periods of one's life and for various conditions. For example, since teens tend to be sexually active, the double Dutch method--condom plus combined oral contraceptive (COC) is a good practice for them. The low-dose lipid-friendly COC provides good cycle control for teens. Women with transient cerebral ischemia-related focal membrane, crescendo migraine, and focal migraine occurring for the first time after using COCs and currently use ergotamine therapy should absolutely not use COCs. The article also has tables which are helpful for practitioners. Table 1 lists the criteria for prescribing a medical contraceptive to teens without parental knowledge and consent. Table 2 explains either what contraceptives are or are not safe and effective for women with hemolytic disorders. For example, the IUD is contraindicated for women with immune thrombocytopenia purpura and thrombocythemia. A sidebar provides the reader a clinical focus.
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PMID:Contraceptive dilemmas. 807 39


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