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Query: UMLS:C0029713 (immaturity)
 4,335 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A case of acute renal failure in a neonate was observed in which there were no obvious predisposing factors. Renal biopsy showed marked glomerular immaturity with otherwise normal renal architecture. Light and ultramicroscopic abnormalities noted suggest that the glomerular immaturity caused an abnormally low glomerular ultrafiltration coefficient (Kf). An inadequate rate of glomerular filtration secondary to the low Kf could have precipitated the acute renal failure. The finding of isolated glomerular maturational arrest is a previously undescribed cause of neonatal renal failure.
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PMID:Neonatal renal failure and glomerular immaturity. 683 66

We report the morbidity and mortality in extremely low birth weight neonates (ELBW) from a tertiary care hospital over seven years (1994-2000). Data regarding maternal and neonatal details was obtained from old records, computer database and medical files. Of the 12,807 live births during this period, 137 (1.07%) were ELBW infants. All of them were managed without surfactant. Overall, 67 infants (48.7%) survived to discharge. The most commonly encountered morbidities were hyperbilirubinemia(65%), respiratory distress(65%), sepsis(52%), intraventricular hemorrhage(29%), pneumonia (25%) and retinopathy of prematurity(24%). Need for resuscitation, pulmonary hemorrhage, seizures, acute renal failure, sclerema and air leak syndromes were significantly associated with mortality. Sepsis accounted for 41% of all deaths while immaturity was the second most important cause, accounting for 24% deaths. The average length of stay for survivors was 49 days (SD +/- 15.9 days)
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PMID:Survival and morbidity in extremely low birth weight (ELBW) infants. 1262 27

Gadolinium-based magnetic resonance imaging (MRI) contrast agents (Gad-CA) were formerly considered as alternatives to X-ray-employed iodinated media. Although originally thought to be nonnephrotoxic and proven to be nonhazardous in a healthy population, the Gad-CA safety issue is progressively more controversial in the high-risk group of end-stage renal disease (ESRD) patients. Recently, Gad-CAs have not only been blamed for harmless side effects such as dizziness or nausea but also for much more severe complications such as acute renal failure, pancreatitis, or even the development of so-called "nephrogenic systemic fibrosis" in patients with renal failure, culminating in the prohibition of gadodiamide (Omniscan) administration in ESRD patients and, due to renal-organ immaturity, in newborns and infants up to 1 year old. This editorial is written to give insights into the molecular structure of Gad-CAs as well as into the potential biochemical pathomechanisms underlying the aforementioned severe clinical manifestations. Furthermore, a review about the latest literature on Gad-CA nephrotoxicity is provided. Potential risk factors are mentioned and strategies to avoid deterioration of renal function are presented. Cases with Gad-CA-associated adverse events should be adequately documented and reported appropriately. MRI professionals should collaborate closely with their colleagues from other medical specialties to identify patients with adverse events.
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PMID:Good MRI images: to Gad or not to Gad? 1757 78

Renal glycosuria is defined as the excretion of glucose in urine in a normoglycemic state. It results from renal tubular dysfunction or immaturity of tubular function in the newborn. Etiologically, renal glycosuria is of 3 types-benign renal glycosuria, glycosuria with diabetes mellitus (including gestational diabetes) and tubular defects (Fanconi syndrome). Prognosis of benign renal glycosuria is excellent and reversible. Acute interstitial nephritis (AIN) is one of the main causes of acute renal failure and may often result in tubular dysfunction. In this study, the authors report the occurrence of AIN with acute renal failure that contributed to reversible renal glycosuria. The glycosuria observed in the patient of this study was an isolated tubular defect, with no phosphaturia, aminoaciduria or bicarbonaturia. Such a presentation is very rare in adults and has not been previously reported. These findings confirm that AIN with acute renal failure can cause an isolated tubular defect with benign reversible glycosuria in an adult.
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PMID:Reversible renal glycosuria in acute interstitial nephritis. 2292 13