Familial renal glycosuria (FRG) is an inherited disorder characterized by persistent glycosuria in the absence of hyperglycemia. It is caused by mutations in the sodium-glucose co-transporter, leading to increase in the renal excretion of glucose and sodium. However, there have been no studies on the role of fasting and postprandial changes in the urinary sodium excretion in patients with FRG. We report a case of renal glycosuria, which was confirmed by a SLC5A2 mutation via gene sequencing, and compared the postprandial urinary glucose and sodium excretion. A 26-year-old man sometimes experienced glycosuria on routine screening; however, other laboratory findings were normal. His fasting and postprandial urinary glucose excretion levels were 295mg/dL and 2,170mg/dL, respectively. The fasting and postprandial urinary sodium excretion levels were 200mEq/L and 89mEq/L, respectively. In patients with FRG, excessive diuresis might be prevented by a compensatory mechanism that reduces postprandial sodium excretion.
Adult ; Diuresis ; Fasting ; Glucose ; Glycosuria* ; Glycosuria, Renal ; Humans ; Hyperglycemia ; Mass Screening ; Renal Elimination ; Sodium ; Sodium-Glucose Transport Proteins

An epidemiological survey on the glycosuria was conducted on the senier students of middle and high school in Seoul, from March 1981 to March 1982. Selected examinee totalled to 254,835 of which 138,116 were male & 116,719 were female. The initial, second and third urine sugar test were done with Combur-test strip(r). Glucose tolerance test was performed on those who were found to have persistent glycosuria. The followings showed the results of the survey. Among the 254,835 examinees, 1,240 were found with initial positive glycosuria. The glycosuria positive rate revealed 0.52% for male, 0.44% for female. Its average was 0.49%. It also revealed that male students in high school had higher positive rate of glycosuria. 2) The persistent glycosuria positive rate revealed 11.58/100,000 for male, 15.42/100,000 for female and its average was 13.34/100,000. 3) Out of the 33 cases with the persistent glycosuria, 60.6% of them were diagnosed as diabetes mellitus. 4) The overall prevalence rate of diabetes was 7.85/100,000. The prevalence rate of male was5.79/100,000, and female was 10.28/100,000. Consequently the rate of male to female was 1:1.78, showing that rates were higher for females than males. The. survey also revealed that the prevalence rate of diabetes was increased with advancing grade. 5) The 70% of the total person who were diagnosed as diabetes, did not recognize of their disease by themselves till the survey was conducted. 6) The frequency of subjective diabetic symptoms were polydipsia, polyuria and polyphagia in order. *Combur-test(r)are registered trade marks of the Boehringer mannheim GmbH Company.
Child* ; Diabetes Mellitus* ; Female ; Glucose Tolerance Test ; Glycosuria* ; Humans ; Male ; Polydipsia ; Polyuria ; Prevalence* ; Seoul

BACKGROUND: Urine ketone test is commonly used to screen for diabetic ketoacidosis (DKA). Ketonuria also develops in patients with disease conditions other than DKA. However, the prevalence of DKA in patients with ketonuria is not known. We investigated the prevalence of ketonuria and characteristics of patients with ketonuria and estimated the prevalence of DKA among them to study the clinical significance of ketonuria as an indicator of DKA. METHODS: We studied 1,314 adult and 1,027 pediatric patients who underwent urinalysis. The prevalence of ketonuria in the different groups of patients, classified according to the types of their visits to the institution, was investigated, and the relationships between ketonuria and albuminuria, glycosuria, and bilirubinuria were evaluated. RESULTS: The overall prevalence of ketonuria was 9.1%. The prevalences of ketonuria in adult and pediatric patients were 4.3% and 15.2%, respectively. The prevalences of ketonuria were the highest in the adult (9.7%) and pediatric (28%) patients in the group that had visited the emergency department. Among patients with ketonuria, 7% adult and 3.8% pediatric patients showed glycosuria. CONCLUSIONS: This study showed that the prevalence of DKA in patients with ketonuria, defined as the simultaneous presence of ketone bodies and glucose in urine, was only 7%. Therefore, we concluded that ketonuria might be clinically significant as an indicator of acute or severe disease status rather than of DKA.
Adult ; Albuminuria ; Diabetic Ketoacidosis ; Emergencies ; Glucose ; Glycosuria ; Humans ; Ketone Bodies ; Ketosis ; Prevalence ; Urinalysis

OBJECTIVE: To analyze the incidence of gestational diabetes mellitus (GDM) and its clinical implication of glycosuria identified in 2nd trimester pregnancy. METHODS: This study included pregnant women who had undertaken the 50 g oral glucose tolerance test (50 g OGTT) between 24 and 28 weeks gestation and delivered at term (N=704). Blood and urine sample were collected and analyzed for glucose level, one hour after 50 g OGTT. We applied women to 100 g OGTT if their blood glucose level after 50 g OGTT were more than 140 mg/dL. We compared blood glucose level, rate of GDM, birth weight and number of macrosomia at different urine glucose levels. Urine glucose level were measured by urine dipstick test and grouped to trace, 1+, 2+, 3+, and 4+, which were corresponding to 100, 250, 500, 1,000, 2,000 mg/dL. RESULTS: Women with glycosuria after 50 g OGTT were 258/704 (36.6%). Mean blood glucose levels were 117+/-23 mg/dL, 128+/-20 mg/dL, 135+/-23 mg/dL, 132+/-17 mg/dL, 139+/-25 mg/dL, 153+/-45 mg/dL, mean birth weight 3.29+/-0.40 kg, 3.25+/-0.40 kg, 3.27+/-0.41 kg, 3.34+/-0.35 kg, 3.28+/-0.41 kg, 3.33+/-0.40 kg, and numbers of macrosomia (> or =4.0 kg) 20 (4.5%), 3 (4.8%), 1 (1.8%), 2 (4.2%), 3 (6.7%), 0 (0%) at glycosuria level of negative, trace, 1+, 2+, 3+ and 4+ respectively. Glycosuria level was correlated significantly with blood glucose level (P=0.000), but not with birth weight and macrosomia (P=0.838, 0.881). The rate of GDM was 7/55 (12.7%), 2/48 (4.7%), 7/45 (15.6%), 8/48 (16.7%) in glycosuria level of 1+, 2+, 3+, 4+ and their relationship was statistically significant (P=0.000, AUC=0.734, 95%CI 0.638-0.830). In the cut off value of glycosuria 1+ or greater, sensitivity and positive predictive value were 72.7 and 12.2%. CONCLUSION: Glycosuria correlates well with blood glucose level and GDM prevalence but not with birth weight.
Birth Weight ; Blood Glucose ; Diabetes, Gestational ; Female ; Glucose ; Glucose Tolerance Test ; Glycosuria ; Humans ; Incidence ; Pregnancy ; Pregnant Women ; Prevalence

A l3-year-old boy was admitted to our hospital with severe hypertension, visual blurring, excessive sweating, polyuria and polydipsia. On admission, the blood pressure was persistently elevated at 230/180 mmHg. and an ophthalmologist was consulted, the funduscopic examination showed bilateral grade IV retinopathy. Cardiomegaly with dyspneic on exertion and persistent tachycardia were present. In urine examinations, proteinuria was sustained and glycosuria was traced. B. U. N. was 9.4 mg/dl. Urinary catecholamine was 12480 mic.g./day ; urinary V. M. A. was 20.2 mg./day. Regitine test was positive but histamine test was not performed. Presacral air insufflation with nephrotomography showed egg sized soft tissue mass locating at just above the upper pole of left kidney. He was operated with transabdominal approach. There were bilateral pheochromocytomas on suprarenal areas. Two weeks after operation, he was discharged with good general condition and we report this case with review of literatures.
Blood Pressure ; Cardiomegaly ; Glycosuria ; Histamine ; Humans ; Hypertension ; Insufflation ; Kidney ; Male ; Ovum ; Phentolamine ; Pheochromocytoma* ; Polydipsia ; Polyuria ; Proteinuria ; Sweat ; Sweating ; Tachycardia

We aimed to identify the clinical variables associated with a better glucose-lowering response to the sodium glucose cotransporter 2 inhibitor ipragliflozin in people with type 2 diabetes mellitus (T2DM). We especially focused on urinary glucose excretion (UGE). This was a single-arm multicenter prospective study. A total of 92 people with T2DM aged 20 to 70 years with glycosylated hemoglobin (HbA1c) levels ≥7.0% and ≤9.5% were enrolled. Ipragliflozin (50 mg) was added to the background therapy for these people for 12 weeks. After 3 months treatment with ipragliflozin, the mean HbA1c levels were decreased from 7.6% to 6.9% and 62.0% of the people reached the HbA1c target of less than 7.0% (P<0.001). In addition, body weight, blood pressure, and lipid parameters were improved after ipragliflozin treatment (all P<0.001). The baseline HbA1c (r=0.66, P<0.001) and morning spot urine glucose to creatinine ratio (r=−0.30, P=0.001) were independently associated with the HbA1c reduction. Ipragliflozin treatment for 12 weeks improves glycemic control and other metabolic parameters. A higher HbA1c and lower UGE at baseline predicts a better glucose-lowering efficacy of ipragliflozin.
Blood Pressure ; Body Weight ; Creatinine ; Diabetes Mellitus, Type 2 ; Glucose ; Glycosuria ; Hemoglobin A, Glycosylated ; Prospective Studies ; Sodium ; Sodium-Glucose Transporter 2

To elucidate the mechanism of gentamicin induced renal dysfunction, renal functions and activities of various proximal tubular transport systems were studied in gentamicin-treated rats (Fisher 344). Gentamicin nephrotoxicity was induced by injecting gentamicin sulfate subcutaneously at a dose of 100 mg/kg cntdot day for 7 days. The gentamicin injection resulted in a marked polyuria, hyposthenuria, proteinuria, glycosuria, aminoaciduria, phosphaturia, natriuresis, and kaliuresis, characteristics of aminoglycoside nephropathy. Such renal functional changes occurred in the face of reduced GFR, thus tubular transport functions appeared to be impaired. The polyuria and hyposthenuria were partly associated with a mild osmotic diuresis, but mostly attributed to a reduction in free water reabsorption. In renal cortical brush-border membrane vesicles isolated from gentamicin-treated rats, the Na+ gradient dependent transport of glucose, alanine, phosphate and succinate was significantly attenuated with no changes in Na+/-independent transport and the membrane permeability to Na+. These results indicate that gentamicin treatment induces a defect in free water reabsorption in the distal nephron and impairs various Na+/-cotransport systems in the proximal tubular brush-border membranes, leading to polyuria, hyposthenuria, and increased urinary excretion of Na+ and other solutes.
Alanine ; Animals ; Diuresis ; Gentamicins ; Glucose ; Glycosuria ; Hypophosphatemia, Familial ; Membranes ; Natriuresis ; Nephrons ; Permeability ; Polyuria ; Proteinuria ; Rats* ; Succinic Acid ; Water

Tubulointerstitial nephritis and uveitis (TINU) syndrome is a rare disease that comprises 4.7% of acute interstitial nephritis. With reno-ocular manifestations, TINU syndrome is accompanied by symptoms such as fever, fatigue, malaise, anorexia, vomiting, and arthralgia. TINU syndrome is reported mainly in children or adolescent girls, and it is rare in adults. Although TINU syndrome can present with multiple renal tubular defects, Fanconi syndrome characterized by generalized impairment of proximal tubular function, leading to renal glucosuria, hyperuricosuria, hyperphosphaturia, proximal renal tubular acidosis, and kaliuresis leading to hypokalemia, has rarely been described. We report a case of TINU syndrome with Fanconi syndrome in a 46-year-old HLA B27-positive Korean woman.
Acidosis, Renal Tubular ; Adolescent ; Adult ; Anorexia ; Arthralgia ; Child ; Fanconi Syndrome* ; Fatigue ; Female ; Fever ; Glycosuria, Renal ; Humans ; Hypokalemia ; Hypophosphatemia, Familial ; Middle Aged ; Nephritis, Interstitial* ; Rare Diseases ; Uveitis* ; Vomiting

A 56-year- old man showed millet seed to egg sized, yellowish tender papules, subcutaneous mass on the both elbows, dorsa of both hands & feet, and lateral malleoli and helix of right ear for 6 years. the significant laboratory findings were leukocytosis, increased erythrocyte sedimentation rate, glycosuria, hyperuricemia and increased blood glucose level. X-ray findings of both hands & feet demonstrated gouty arthritic patterns. Histopathologic findings of the left lateral malleolar lesion revealed the typical patterns. Histopathologic findings of the left lateral malleolar lesion revealed the typical pattern of gout with needle-shaped urate crystal. Therapy was begun with colchicine & allopurinol but the patient died of renal failure three weeks after the start of therapy.
Allopurinol ; Blood Glucose ; Blood Sedimentation ; Colchicine ; Ear ; Elbow ; Foot ; Glycosuria ; Gout* ; Hand ; Humans ; Hyperuricemia ; Leukocytosis ; Ovum ; Panicum ; Renal Insufficiency ; Uric Acid

Fanconi syndrome is a complex of renal tubular dysfunction defined by glycosuria without diabetes, generalized aminoaciduria, phosphaturia, bicarbonaturia, uric aciduria, and renal tubular acidosis. It is often associated with hypokalemia, hypophosphatemia, rickets and osteomalacia. We have experienced one case of Fanconi syndrome with chronic tubulointerstitial nephritis. The patient was a 4 year old and his chief complaints were polyuria, polydipsia, and poor weight gain. There were hyperchloremic metabolic acidosis, hypokalemia, glycosuria, generalized aminoaciduria and phosphaturia. We report a case of Fanconi syndrome with brief review of the literatures.
Acidosis ; Acidosis, Renal Tubular ; Child, Preschool ; Fanconi Syndrome* ; Glycosuria ; Humans ; Hypokalemia ; Hypophosphatemia ; Hypophosphatemia, Familial ; Nephritis, Interstitial ; Osteomalacia ; Polydipsia ; Polyuria ; Rickets ; Weight Gain