Diabetes mellitus (DM) has grown up to be an important issue of global public health because of its high incidence rate. Diabetic kidney disease (DKD) is the main cause of end-stage kidney disease (ESKD). Therefore, early diagnosis and timely prevention and treatment of DKD are essential for the progress of DM. The clinical diagnosis and staging of DKD are mostly based on the urinary albumin excretion rate (UAER) and estimated glomerular filtration rate (eGFR). However, clinically, DKD patients show normoalbuminuric diabetic kidney disease (NADKD) instead of clinical proteinuria. The old NADKD concept is no longer suitable and should be updated accordingly with the redefinition of normal proteinuria by NKF/FDA (National Kidney Foundation/Food and Drug Administration). Based on the relevant guidelines of DM and chronic kidney disease (CKD) and combined with the current situation of clinical research, the review described NADKD from the aspects of epidemiology, pathological mechanism, disease diagnosis, clinical characteristics and biomarkers, to arouse the new understanding of NADKD in the medical profession and pay attention to it.
Humans ; Diabetic Nephropathies/etiology* ; Diabetes Mellitus, Type 2/complications* ; Albuminuria ; Kidney ; Proteinuria/complications*

Diabetes mellitus (DM) has grown up to be an important issue of global public health because of its high incidence rate. Diabetic kidney disease (DKD) is the main cause of end-stage kidney disease (ESKD). Therefore, early diagnosis and timely prevention and treatment of DKD are essential for the progress of DM. The clinical diagnosis and staging of DKD are mostly based on the urinary albumin excretion rate (UAER) and estimated glomerular filtration rate (eGFR). However, clinically, DKD patients show normoalbuminuric diabetic kidney disease (NADKD) instead of clinical proteinuria. The old NADKD concept is no longer suitable and should be updated accordingly with the redefinition of normal proteinuria by NKF/FDA (National Kidney Foundation/Food and Drug Administration). Based on the relevant guidelines of DM and chronic kidney disease (CKD) and combined with the current situation of clinical research, the review described NADKD from the aspects of epidemiology, pathological mechanism, disease diagnosis, clinical characteristics and biomarkers, to arouse the new understanding of NADKD in the medical profession and pay attention to it.
Humans ; Diabetic Nephropathies/etiology* ; Diabetes Mellitus, Type 2/complications* ; Albuminuria ; Kidney ; Proteinuria/complications*

Aged, 80 and over ; Cardiomegaly ; etiology ; pathology ; Cerebrovascular Disorders ; etiology ; Humans ; Hypertension ; complications ; pathology ; Proteinuria ; etiology ; pathology

OBJECTIVE: To investigate the factors related to renal impairment in patients with diabetic kidney disease (DKD) from the perspective of integrated Chinese and Western medicine. METHODS: Totally 492 patients with DKD in 8 Chinese hospitals from October 2017 to July 2019 were included. According to Kidney Disease Improving Global Outcomes (KDIGO) staging guidelines, patients were divided into a chronic kidney disease (CKD) 1-3 group and a CKD 4-5 group. Clinical data were collected, and logistic regression was used to analyze the factors related to different CKD stages in DKD patients. RESULTS: Demographically, male was a factor related to increased CKD staging in patients with DKD (OR=3.100, P=0.002). In clinical characteristics, course of diabetes >60 months (OR=3.562, P=0.010), anemia (OR=4.176, P<0.001), hyperuricemia (OR=3.352, P<0.001), massive albuminuria (OR=4.058, P=0.002), atherosclerosis (OR=2.153, P=0.007) and blood deficiency syndrome (OR=1.945, P=0.020) were factors related to increased CKD staging in patients with DKD. CONCLUSIONS Male, course of diabetes >60 months, anemia, hyperuricemia, massive proteinuria, atherosclerosis, and blood deficiency syndrome might indicate more severe degree of renal function damage in patients with DKD. (Registration No. NCT03865914).
Humans ; Male ; Diabetes Mellitus, Type 2 ; Diabetic Nephropathies ; Hyperuricemia ; Kidney ; Proteinuria ; Renal Insufficiency, Chronic/complications*

PURPOSE: We investigated the effects of proteinuria and renal insufficiency on all-cause mortality in patients with colorectal cancer, with special emphasis on cancer staging and cancer-related deaths. MATERIALS AND METHODS: We retrospectively studied a cohort of patients with colorectal cancer. In protocol 1, patients were classified into four groups based on the operability of cancer and proteinuria: group 1, early-stage cancer patients (colorectal cancer stage < or =3) without proteinuria; group 2, early-stage cancer patients with proteinuria; group 3, advanced-stage cancer patients without proteinuria (colorectal cancer stage=4); and group 4, advanced-stage cancer patients with proteinuria. In protocol 2, patients were classified into four similar groups based on cancer staging and renal insufficiency (eGFR <60 mL/min/1.73 m2). Between January 1, 1998 and December 31, 2009, 3379 patients were enrolled in this cohort and followed until May 1, 2012 or until death. RESULTS: The number of patients with proteinuria was 495 (14.6%). The prevalence of proteinuria was higher in advanced-stage cancer (n=151, 22.3%) than in early-stage cancer patients (n=344, 12.7%). After adjusting for age, gender and other clinical variables, the proteinuric, early-stage cancer group was shown to be associated with an adjusted hazard ratio of 1.67 and a 95% confidence interval of 1.38-2.01, compared with non-proteinuric early-stage cancer patients. However, renal insufficiency was not associated with colorectal cancer mortality. CONCLUSION: Proteinuria is an important risk factor for cancer mortality, especially in relatively early colorectal cancer.
Aged ; Colorectal Neoplasms/complications/*mortality/pathology ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Staging ; Prevalence ; Proteinuria/*complications/epidemiology ; Renal Insufficiency/complications ; Retrospective Studies ; Risk Factors

Churg-Strauss syndrome (CSS), or allergic granulomatosis, is a rare disease manifested by tissue infiltration, hypereosinophilia and vasculitis. Renal involvement may be seen in up to 50% of cases. We report the case of a 25-year old man who presented with a history of fever for two months, tingling, numbness, and paraesthesia of the upper limbs and left lower limb, along with diarrhoea for one month and an inability to walk for the past seven days. Serial laboratory investigations helped to reach the final diagnosis of CSS with mononeuritis multiplex, and skin, pulmonary and gastrointestinal involvement with hypertension. This is due to renal involvement in the form of focal segmental glomerulosclerosis without any nephrotic range proteinuria, which is a very rare clinical entity. The patient's symptoms were relieved after the administration of an unconventional mode of therapy.
Adult ; Biopsy ; Churg-Strauss Syndrome ; complications ; diagnosis ; Fever ; Glomerulosclerosis, Focal Segmental ; complications ; diagnosis ; Humans ; Kidney ; pathology ; Kidney Diseases ; complications ; Male ; Proteinuria ; diagnosis ; Radiography, Thoracic ; Skin ; pathology ; Treatment Outcome

OBJECTIVETo determine the relationship between estimated glomerular filtration rate (eGFR) and proteinuria with cardiovascular events in subjects aged 80 years or older.

METHODSData for this retrospective prognostic study were drawn from the patient database for routine checkup in Beijing hospital between January 2001 to December 2001. Baseline eGFR and proteinuria were evaluated in 340 subjects [mean age: (85.6 ± 4.0) years]. eGFR was calculated using the modified abbreviated MDRD equations based on the Chinese chronic kidney disease patients. The subjects were divided into normal renal function group and reduced renal function group (eGFR <60 ml·min(-1)·1.73 m(-2)). The subjects were divided into subjects without proteinuria and subjects with proteinuria group. Cardiovascular events included cardiovascular death, nonfatal myocardial infarction, nonfatal stroke.

RESULTSThe proportion of reduced renal function was 36.8% (125/340). The proportion of proteinuria was 10.3% (35/340). The proportion of reduced renal function or proteinuria was 41.8% (142/340). Follow-up time was 79 months (40-114 months). Cardiovascular events rate was significantly higher in reduced renal function group than in normal renal function group [37.6% (47/125) vs. 26.2% (55/210), P < 0.05 ] and in proteinuria group than in without proteinuria group [50.0% (17/34) vs. 28.2% (85/301), P < 0.01 ]. Cox multivariate analysis revealed that both eGFR (HR = 0.978, 95%CI:0.961-0.994, P < 0.05 ) and proteinuria (HR = 2.049, 95%CI:1.132-3.709, P < 0.05) were independent risk factors for cardiovascular events after adjusting for age, gender, triglyceride, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, uric acid, hypertension, coronary heart disease, diabetes mellitus.

CONCLUSIONSReduced eGFR and presence of proteinuria are independent risk factors for cardiovascular event in subjects aged 80 years or older. eGFR and proteinuria can thus be used for cardiovascular event risk stratification in subjects aged 80 years or older.

Aged, 80 and over ; Cardiovascular Diseases ; complications ; physiopathology ; Female ; Glomerular Filtration Rate ; Humans ; Male ; Multivariate Analysis ; Proteinuria ; Retrospective Studies ; Risk Factors

Diabetes is a rapidly increasing heath care problem all over the world due to increased prevalence during past decade. Diabetic nephropathy develops in 25-30% of patients with type 1 diabetes and is the leading cause of end stage renal disease. Diabetic nephropathy is characterized by persistent proteinuria, decline in renal function, hypertension and increased cardiovascular morbidity and mortality. Early detection of diabetic nephropathy risk is an important goal because early diagnosis and treatment prevent advanced renal damage and other diabetic complications. Increased urinary albumin excretion rate is widely accepted as the first clinical sign of diabetic nephropathy. However, reduced glomerular filtration or hypertension could be the first manifestation in some diabetic patients. We need improved markers and predictors of diabetic nephropathy risk. We report a case of diabetic nephropathy and decreased glomerular filtration rate (GFR) without microalbuminuria occcured in type 1 diabetic patient.
Diabetes Complications ; Diabetic Nephropathies* ; Early Diagnosis ; Filtration ; Glomerular Filtration Rate ; Humans ; Hypertension ; Kidney Failure, Chronic ; Mortality ; Prevalence ; Proteinuria

OBJECTIVETo explore the podocyte injury in patients with diabetic nephropathy (DN) and analyze its relationship with glucose regulated protein 78 (GRP78) and proteinuria.

METHODSThe clinical data of 48 patients diagnosed as DN by renal biopsy were reviewed. All patients were divided into two groups according to proteinuria (>3.5 g/d, n=31 and 3.5 g/d, n=17). The density of podocytes was illustrated by immunohistochemistry staining of Wilms tumor-1 (WT-1), and the immunofluorescence double-staining results of synaptopodin and GRP78 in podocytes were detected.

RESULTSThe podocyte dentistry of urine protein > 3.5 g/d group was significantly lower than that of urine protein>3.5 g/d group urine protein<3.5 g/d group(P=0.003), and it was negatively correlated with proteinuria (P=0.005). The expressions of synaptopodin and GRP78 in podocytes were also negatively correlated with proteinuria (P=0.004 and P=0.001).

CONCLUSIONThe podocyte injury is aggravated with increased proteinuria in DN patients, along with the decrease of the adaptive ability of endoplasmic reticulum to stress.

Adult ; Diabetic Nephropathies ; complications ; metabolism ; pathology ; Female ; Heat-Shock Proteins ; metabolism ; Humans ; Male ; Middle Aged ; Podocytes ; pathology ; Proteinuria ; etiology

The clinical records have been studied from 517 diabetes subjects which were admitted to Severance Hospital during the period from Jan. 1968 to Aug. 1971 with special reference to urogenital complications. The results were as follows: 1) Among the 517 cases of diabetes mellitus, most frequent age distribution showed more than 50 years of age with 66% (329 cases) and next 40 to 50 years with 22% (126 cases). The ratio between male and female was 2 : 1 (male 352 : female 165). 2) The incidence rate of urogenital complications among 517 cases of diabetes mellitus was found in 13. 7% (71 cases). 3) The development of genitourinary complication was closely related to the duration of the diabetes. While only 38 cases (10.3%) of 367 diabetics with duration of disease of less than 5 years showed genitourinary complication, 14 cases (33.3%) of 58 diabetics with history of more than 10 years manifested diabetic complication in genitourinary tract. 4) The lesions of genitourinary tract were found more frequently in women than in men. Seventy one patients of genitourinary complication were present in 43 of 352 men (12%) and 28 of 165 women (17.5%). 5) Concerning the frequency of genitourinary complications (71 cases) in each disease, urinary infection was found in 46 cases (65%), Kimmelstiel-Wilson's syndrome in 32 cases (45%), and only 2 cases of papillary necrosis, 3 cases of impotence and 2 cases of neurogenic bladder were observed. 6) In 71 cases of urogenital complication, the proteinuria was detected in 47 cases (66%), elevation of blood urea nitrogen level was 36 cases (50%) and positive result of urine culture was 12 cases with E. coli and aerobacter. 7) The frequency of urogenital complication in diabetes mellitus demands that a definite plan of urological investigation be included in its management. In many our cases, no specific questions relative to the genitourinary tract were asked in history taking. It is evident that the necessity of close cooperation between the physician and urologist in the management of diabetes mellitus. To attain the optimum results in the care of diabetes mellitus, consultation with the urologist is essential.
Age Distribution ; Blood Urea Nitrogen ; Diabetes Complications ; Diabetes Mellitus* ; Erectile Dysfunction ; Female ; Humans ; Incidence ; Male ; Necrosis ; Proteinuria ; Urinary Bladder, Neurogenic