Hyperthyroxinemia secondary to multiple myeloma: One case report / 中华内分泌代谢杂志

The thyroid function test is universally used for the evaluation of thyroid function. However, there are factors other than endocrine diseases, such as special physiological conditions, interference in laboratory measurement, or disorders in other systems that should be taken into consideration. When encountering thyroid function test results that are not in line with clinical manifestation, a comprehensive evaluation is essential for a correct and timely diagnosis. We presented a case of a significant rise in serum total triiodothyronine(TT 3) secondary to multiple myeloma. Through case studies and literature review, we intended to provide clinicians with experience for better interpretation of abnormal thyroid function test results.

Analysis of mortality trend and related factors for aged in-patients with diabetes mellitus / 中国实用内科杂志

OBJECTIVE: To find out the mortality trend and related factors in aged hospitalized patients with diabetes mellitus(DM). METHODS: The case information diabetic in patients who died during the period from 2005 to 2014 were collected and the mortality and causes of death were analyzed. RESULTS: From 2005 to 2014, 1297 diabetic patients died, and the mortality of elderly DM inpatients was 4.44%(1162 cases), significantly higher than that of the non-elderly of 0.94%(P<0.001). The death rate of elderly diabetic patients was significantly higher in males than in females(5.22% vs. 3.47%, P<0.001). The mortality of the aged diabetic patients decreased within 10 years(P<0.001), decreasing from 4.75% in 2005 to 3.01% in 2009(P<0.001) in the year of 2005-2009, while there were no differences in the year of 2010-2014. The main death causes of the aged diabetic in-patients were as follows: infections(27.71%), cardiovascular diseases(25.22%), tumor(21.34%), cerebral vascular diseases(10.41%) and diabetic complications(5.51%). The first death cause in the 60-79 yrs group was cardiovascular diseases, while in the ≥80 yrs group, it was infections. The constituent ratio of infection as death cause in the aged during 2010-2014 significantly increased(22.60% vs. 32.50%, P<0.001), increasing by 43.81%, and it became the first cause of death in 2010. CONCLUSION: The death rate of the elderly DM in-patients has decreased significantly within 10 years, from 2005 to 2014, while the rate has kept steady from 2010. Infections and cardiovascular diseases are the main cause of death. So it's important to prevent the elderly hospitalized DM patients from infection, in addition to cardiovascular diseases, and to control in time.

Levels of airway inflammatory mediators in peripheral blood in infants and young children with wheezing / 中国当代儿科杂志

OBJECTIVE@#To examine the levels of airway inflammatory mediators in peripheral blood in infants and young children with wheezing and to study the possible pathogenesis of wheezing from the aspects of T helper cell 1 (Th1)/T helper cell 2 (Th2) imbalance and airway inflammation.@*METHODS@#A total of 50 children aged 1 month to 3 years with an acute wheezing episode were enrolled as the wheezing group, and 25 age-matched healthy infants were enrolled as the healthy control group. According to the number of wheezing episodes, the wheezing group was divided into a first-episode group (n=25) and a recurrent wheezing (number of episodes ≥2) group (n=25). According to the presence or absence of high-risk factors for asthma, the wheezing group was divided into a high-risk factor group (n=22) and a non-high-risk factor group (n=28). According to the results of pathogen detection, the wheezing group was divided into a positive pathogen group (n=23) and a negative pathogen group (n=27). Levels of interleukin-2 (IL-2), interleukin-4 (IL-4), interleukin-5 (IL-5), interleukin-13 (IL-13), transforming growth factor-β1 (TGF-β1), and total IgE (TIgE) in peripheral blood were measured for each group. For children with wheezing, eosinophil (EOS) count in peripheral blood was measured, and related samples were collected for respiratory pathogen detection.@*RESULTS@#The wheezing group had significantly higher levels of IL-4, IL-5, IL-13, TGF-β1, and TIgE in peripheral blood than the healthy control group (P0.05). The correlation analysis showed that in children with wheezing, EOS count was positively correlated with IL-4 level (P<0.01), IL-4 level was positively correlated with IL-5 and IL-13 levels (P<0.01), IL-5 level was positively correlated with IL-13 level (P<0.01), and IL-2 level was positively correlated with TGF-β1 level (P<0.05).@*CONCLUSIONS@#Th1/Th2 imbalance with a predominance of Th2 is observed in infants and young children with wheezing. IL-4, IL-5, IL-13, TGF-β1, and IgE are involved in the pathogenesis of wheezing in these children. Airway inflammation is also observed in these children with wheezing, but it is not associated with the number of wheezing episodes, presence or absence of high-risk factors for asthma, or results of pathogen detection.

Liver dysfunction for 8 years with hypertension for 1 week in an 8-year-old girl / 中国当代儿科杂志

A girl, aged 8 years, developed jaundice and liver dysfunction in the neonatal period, with congenital glaucoma diagnosed on day 5 after birth, hypertension and unusual facies (broad forehead, hypertelorism and deep-set eyes). Cholestasis was the main type of liver dysfunction. Cardiac macrovascular CTA showed stenosis at the abdominal aorta and the beginning of the bilateral renal arteries. Whole exon sequencing revealed a heterozygous frameshift mutation, c.1485delC (absence of cytosine), in exon 12 of the JAG1gene. The girl was diagnosed with Alagille syndrome and was given transaminase-lowering, cholagogic and antihypertensive treatment with multiple drugs. There were significant reductions in serum levels of alanine aminotransferase, aspartate aminotransferase and total bile acid, but blood pressure fluctuated between 102-140 mm Hg/53-89 mm Hg. After renal artery angiography and balloon dilatation angioplasty, the girl was given oral administration of antihypertensive drugs, and blood pressure was controlled at a level of 110-120 mm Hg/60-80 mm Hg. The rare disease Alagille syndrome should be considered when a child has refractory hypertension with the involvement of multiple systems, especially liver dysfunction with cholestasis as the main manifestation. Genetic causes should be analyzed for a early diagnosis.

Research progress of gene therapy for chronic granulomatosis disease / 国际儿科学杂志

Chronic granulomatous disease (CGD) is a rare type of primary phagocytic immunodeficiency disease.CGD is caused by a defective gene that encodes the components of reduced nicotinamide adenine dinucleotide phosphate (NADPH) in phagocytes.Due to genetic mutations causing phagocytic respiratory dysfunction,phagocytic cells are not effective in killing peroxidase-positive bacteria and fungi,and clinical manifestations are characterized by repeated severe bacterial,fungal infections and granuloma formation.The current clinical treatments include routine therapy and hematopoietic stem cell transplantation (HSCT).With the research development of CGD in genetics,molecular biology and vector science,clinical research on gene therapy of the disease has been carried out,in which CRISPR/Cas9 system has a good application prospect in gene therapy for genetic diseases.This article reviews the progress of gene therapy.

Assessment of hypoglycemic status among hospitalized elderly patients with type 2 diabetes / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the hypoglycemic characteristics of hospitalized elderly patients with type 2 diabetes mellitus (T2DM).</p><p><b>METHODS</b>From January, 2014 to December, 2015, the data of 58 565 blood measurements using a standard blood glucose monitoring system (BGMS) were collected from 1187 cases of patients with type 2 diabetes during hospitalization in the Department of Endocrinology, Guangdong General Hospital (Guangzhou, China). Stratified analyses were conducted by dividing the patients into 3 age groups, namely <45 years group (128 cases), 45-64 years group (594 cases), and ≥65 years group (465 cases). The incidence and time distribution of hypoglycemia in these patients were compared among the 3 age groups.</p><p><b>RESULTS</b>The risk of hypoglycemia increased with age. Compared with those below 45 years of age, the patients beyond or equal to 65 years had a significantly increased hypoglycemic density (0.95% vs 0.40%, P<0.001), a higher proportion of patients with hypoglycemia (28.17% vs 10.94%, P<0.001), and greater patient-days with hypoglycemia (4.48% vs 1.76%, P<0.001). In the elderly patients, hypoglycemia occurred most frequently before dawn, at which time the hypoglycemic density was 2.66% in patients ≥65 years of age, significantly higher than that in patients below 45 years (1.09%, P<0.05) and between 45 and 64 years (1.90%, P<0.05); the proportion of patients with hypoglycemia was also significantly higher in the elderly patients (14.57%) than in those below 45 years (3.77%, P<0.02) and between 45 and 64 years (9.42%, P<0.02). The proportion of patients with recurrent hypoglycemia (≥2 times) was significantly higher in patients ≥65 years (13.33%) than in younger patients (2.34% in <45 years group and 9.43% in 45-64 years group, P<0.05).</p><p><b>CONCLUSION</b>The hypoglycemic risk in hospitalized elderly patients with T2DM is significantly higher than that in younger patients, especially before dawn and in terms of recurrent hypoglycemia. Clinicians should develop differential blood glucose monitoring and management strategies for these elderly patients to improve the clinical safety.</p>

Correlation between ectopic fat accumulation and insulin sensitivity in obese individuals with different glucose tolerance levels / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the correlation between liver and skeletal muscle fat contents and insulin resistance in obese individuals with different levels of glucose tolerance.</p><p><b>METHODS</b>RESULTS: Ten non-obese individuals with normal glucose tolerance (NGT), 9 obese individuals with NGT, and 7 obese individuals with impaired glucose tolerance (IGT) were enrolled in this study. All the participants were examined for insulin sensitivity by hyperinsulinemic-euglycemic clamp and for liver and skeletal muscle fat accumulation quantified by proton magnetic resonance spectroscopy (1H MRS). The data were collected from the subjects including somatometric measurements, fasting plasma glucose, 2-h plasma glucose (2hPG), fasting insulin, and blood biochemistry. Linear correlation analysis and multiple linear stepwise regression analysis were used to analyze the relationship between ectopic fat accumulation and insulin resistance.</p><p><b>RESULTS</b>The glucose infusion rates (GIR, presented as the M value) differed significantly among IGT-obese (3.95∓1.66 mg·kg·min), NGT-obese (6.14∓1.90 mg·kg·min) and NGT-non-obese (8.78∓2.46 mg·kg·min) groups (P<0.05). The 3 groups also showed significant differences in liver fat contents [(15.23∓3.09)%, (6.25∓0.38)%, and (1.89∓0.90)%, respectively, P<0.05] and intramyocellular lipids in the tibialis anterior (2.69∓0.95, 2.61∓1.45, and 1.54∓0.66 mmol/kg, respectively, P<0.05). Linear analysis revealed that liver fat content, but not skeletal muscle fat content, was significantly correlated with the M value. Multiple linear stepwise regression analysis using M value as the dependent variable (Y) revealed that liver fat content (X) was an independent factor inversely correlated with the M value (regression equation: Y=-30.562X+9.007, R=0.717, P<0.01).</p><p><b>CONCLUSIONS</b>Liver fat accumulation, but not skeletal muscle fat accumulation, is correlated with insulin resistance and impaired glucose metabolism.</p>

Efficacy of ultrasound-guided lauromacrogol sclerotherapy for benign thyroid cysts and factors affecting the therapeutic effect / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the clinical efficacy of ultrasound-guided lauromacrogol sclerotherapy for benign thyroid cysts and analyze the factors affecting the efficacy.</p><p><b>METHODS</b>Ultrasound-guided lauromacrogol sclerotherapy was performed in 97 patients with a total of 99 benign thyroid cysts. The changes in cystic volume and other thyroid parameters were evaluated at 1, 3, 6, and 12 months after sclerotherapy. According to changes in the cystic volume, the efficacy of sclerotherapy was defined as therapeutic failure (with a volume reduction <50%), treatment success (volume reduction ≥50%) and cure (volume reduction ≥90%). The factors of affecting the efficacy of sclerotherapy was analyzed using COX regression.</p><p><b>RESULTS</b>The mean cystic volume at 1, 3, 6 and 12 months after sclerotherapy were reduced from the baseline volume of 12.08∓11.56 cmto 5.63∓8.51 cm, 5.96∓8.42 cm, 3.80∓5.50 cmand 2.85∓3.98 cm, respectively, with an average cystic volume reduction rate of (70.02∓33.72)%. Therapeutic success was achieved 82 of the 99 cysts (82.83%) and cure was achieved 63cysts (63.64%) at 12 months after the procedure. A second sclerotherapy was performed for 13 cysts which did not show a volume reduction at 1-3 months after the initial procedure. A disease course of over 12 months was an independent risk factor for a second sclerotherapy (23.7% [9/38] vs 6.6% [4/61], OR=4.473 [1.238-16.169], P=0.022). The efficacy of sclerotherapy was related to cystic cavity separation, cystic fluid viscosity, cystic/solid ratio and cystic wall thickness. COX regression analysis revealed that cystic cavity separation (HR=2.25, 95%CI: 1.19-4.25) and cystic fluid viscosity (HR=2.02, 95%CI: 1.19-3.43) were the major factors affecting the treatment efficacy.</p><p><b>CONCLUSION</b>Ultrasound-guided lauromacrogol sclerotherapy is effective and safe for treatment of benign thyroid cysts, and the maximal treatment effect can be achieved at 6 months after sclerotherapy and in cases of uncomplicated cysts with non-viscous cystic fluid, no solid cystic cavity separation and a disease course of less than 12 months.</p>

Effect of atorvastatin on cardiac function and TGF-β1 signaling pathway after acute myocardial infarction in rats / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the effect of atorvastatin on cardiac remodeling and function after acute myocardial infarction (AMI) in rats and whether this effect is mediated by transforming growth factor-β1 (TGF-β1) signaling pathway.</p><p><b>METHODS</b>AMI was induced by left coronary artery ligation in 64 male Sprague-Dawley rats, and 45 surviving rats were randomized into control group (n=15), low-dose atorvastatin group (10 mg/kg, n=15) and high-dose atorvastatin group (20 mg/kg, n=15). Similar surgical procedure was performed in sham-operated rats (n=15) without coronary ligation. Atorvastatin was given daily by gavage from the first day after AMI. Eight weeks later, the cardiac function, left ventricular weight/body mass index (LVMI), collagen volume fraction (CVF), and the expressions of TGF-β1 and Smad2 were compared between the groups.</p><p><b>RESULTS</b>AMI caused significantly reduced cardiac function, increased LVMI and CVF, and upregulated expressions of TGF-β1 and Smad2 mRNA and proteins in the control group (P<0.05). The cardiac function, LVMI, and CVF were improved by atorvastatin, which also down-regulated the expressions of TGF-β1 and Smad2 (P<0.05), and the effects were more prominent in high-dose atorvastatin group (P<0.05).</p><p><b>CONCLUSION</b>Atorvastatin can dose-dependently improve cardiac remodeling and function after AMI in rats, which is mediated by regulating the activity of TGF-β1/Smad2 signaling pathway.</p>

Genetic differentiation and patterns of gene flow of ten minorities in Yunnan province / 法医学杂志

OBJECTIVE@#To explore the features of genetic differentiation and gene flow of ten minorities in Yunnan province according to nine CODIS short tandem repeat(STR) loci (CSF1PO, FGA, THO1, TPOX, v WA, D3S1358, D5S818, D7S820 and D13S317).@*METHODS@#Heterozygosity and parameters of population differentiation such as F, theta, f and Gst at each locus were calculated. DA genetic distance and fixation index Fst were calculated by Phylip 3.6 and Arlequin 3.0 software, respectively. Phylogenetic trees were constructed by Mega 3.0, and the patterns of gene flow were analyzed by R-matrix model.@*RESULTS@#It showed that average genetic heterogeneity in ten minorities was above 0.7. Significant difference was found for most of the loci in genetic differentiation. Phylogenetic tree analysis showed that the ten minorities were divided into two clusters. The results of the R-matrix analysis showed that the gene flow of Yi and Dai minorities were higher than that of other minorities, while the pattern of gene flow of Dulong minority demonstrated some of the isolation.@*CONCLUSION@#Nine STR loci commonly used in forensic identification show a high polymorphism. Heterozygosity can be used for investigating genetic differentiation and gene flow of minority. The ten minorities in Yunnan are independent populations, while the level of differentiation is not high. The relationship in evolution is not far from each other and shows a widely gene flow among the minorities.

Effect of different dietary loads on glucose-dependent insulinotropic polypeptide in subjects with normal glucose tolerance / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the secretion patterns of glucose-dependent insulinotropic polypeptide (GIP) after different dietary loads in subjects with normal glucose tolerance (NGT) and their relation to insulin secretion and plasma glucose levels.</p><p><b>METHODS</b>Fourteen subjects with normal glucose tolerance underwent 75 g glucose tolerance test(OGTT) followed by mixed meal tolerance test(MMT) one week later. Blood glucose, insulin, and GIP were measured in the fasting state and at 0, 15, 30, 60, 90 and 120 min after glucose load or mixed meal load.</p><p><b>RESULTS</b>The first peak value of GIP after glucose load occurred at 15 min (45.09∓4.67 pmol/L). After a brief decline, GIP continued to increase till reaching 59.66∓11.73 pmol/L at 120 min after the load. After the mixed meal load, GIP secretion presented with two peaks: the first peak appeared at 15 min (71.69∓14.19 pmol/L) with a level significantly higher than that at 15 min following glucose load (P<0.05), and the second occurred at 90 min (55.35∓13.19 pmol/L). The area under curve of GIP showed no significant difference between the two loads (P>0.05). Compared with glucose load, mixed meal load resulted in an increase of the first GIP peak and an earlier insulin peak (30 min vs 60 min), but a significant decrease of blood glucose at 15 min (P<0.05).</p><p><b>CONCLUSION</b>Compared with glucose load, mixed meal (containing fat) can strongly stimulate GIP release and cause earlier occurrence of the insulin peak, which might be an important reason for the lower blood glucose after mixed meal.</p>

Transforming growth factor-β1 involved in urotensin II-induced phenotypic differentiation of adventitial fibroblasts from rat aorta / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Urotensin II (UII) is a new vasoconstrictive peptide that may activate the adventitial fibroblasts. Transforming growth factor-β1 (TGF-β1) is an important factor that could induce the phenotypical transdifferentiation of adventitial fibroblasts. This study aimed to explore whether TGF-β1 is involved in UII-induced phenotypic differentiation of adventitial fibroblasts from rat aorta.</p><p><b>METHODS</b>Adventitial fibroblasts were prepared by the explant culture method. TGF-β1 protein secretion from the cells was determined by enzyme-linked immunosorbent assay (ELISA). The mRNA and protein expression of α-smooth nuscle actin (α-SM-actin), the marker of phenotypic differentiation from fibroblasts to myofibroblasts, were determined using real-time quantitative RT-PCR (real-time RT-PCR) and Western blotting, respectively.</p><p><b>RESULTS</b>UII stimulated the secretion of TGF-β1 in cultured adventitial fibroblasts in a time-dependent manner. The secretion reached a peak at 24 hours, was higher by 69.8% (P < 0.01), than the control group. This effect was also concentration dependent. Maximal stimulation was reached at 10(-8) mol/L of UII (P < 0.01), which was increased by 59.9%, compared with in the control group (P < 0.01). The secretion of TGF-β1 induced by UII was significantly blocked by SB-710411 (10(-7) mol/L), a specific antagonist of UII receptor. In addition, both UII (10(-8) mol/L) and TGF-β1 significantly stimulated α-SM-actin mRNA and protein expression. Moreover, the α-SM-actin induced by UII was inhibited by the specific neutralizing antibody (20 µg/ml) of TGF-β1, while the α-SM-actin expression stimulated by TGF-β1 (20 ng/ml) was inhibited by SB-710411 (10(-7) mol/L), the UII receptor antagonist.</p><p><b>CONCLUSION</b>This study suggests that UII could induce TGF-β1 secretion in adventitial fibroblasts via UT activation, and TGF-β1 might be involved in phenotypic differentiation from adventitial fibroblasts into myofibroblasts induced by UII, and TGF-β1 signaling might be one of the important pathways by which UII is involved in vascular fibrosis.</p>

IGF and IGFBP and their relationship with nephropathy in type-2 diabetes mellitus / 中国实用内科杂志

Objective The aim of the present study was to assess the changes of IGF-1,IGF-2,IGFBP-1 and IGFBP-3 in diabetes nephropathy,the relationships between IGFs,IGFBPs and ?_1-,?_2- microglobulin.Methods A total of 130 type-2 diabetic participants(male:52,female:78)aged 37~75 yeares in Guangdong Provincial People's Hospital were enrolled from Feb.2000 to May 2003.Serum IGF-1,IGF-2,IGF binding protein 1(IGFBP-1),IGFBP-3,creatinine(Cr),cholesterol,triglycerides,HDL,LDL,apolipoprotein B100(apoB100),apoA,HbA_1c,fasting and postprandial C-peptide,serum and urine ?_1-MG and ?_2-MG were measured.Patients were divided into clinical albuminuria(DN,n=24),microalbuminuria(MA,n=40),and normal(NOR,n=66)groups according sCr and urine Alb/Cr ratio.Results In multiple linear regression analysis,determinants of S ?_1-MG were IGF-2 、TC and age(r=0.492,P=0.0001);U ?_1-MG were IGF-2、age(r=0.307,P=0.007); S ?_2-MG were IGFBP-1、HDL and age(r=0.528,P=0.0001);U ?_2-MG were IGFBP-1、CP120 and age(r=0.407,P=0.0001);s-Cr were IGFBP-1、CP0 and age(r=0.499,P=0.0001)。Serum IGF-2 and IGFBP-1 were significantly increased in DN group[IGF-2:(889.48?65.94)?g/L vs (711.57?28.73)?g/L,P=0.03;IGFBP-1:(94.91?17.48)?g/L vs(54.81?5.04)?g/L,P=0.009].Conclusion Serum IGFBP-1 and IGF-2 are significantly increased in type 2 diabetes with nephropathy.The disorders of IGFs and lipid metabolism may contribute to the development of diabetic nephropathy.

The analysis of death rate and death causes of senile diabetic inpatients / 中华老年医学杂志

Objective To understand the death rate and the main death causes of the senile diabetic inpatients. Methods The histories of all the death cases of senile diabetic inpatients in this hospital from 1992 to 1999 were reviewed. The death rate and causes of senile diabetics were compared with those of the non-senile diabetics. Results Senile diabetics among the total diabetic inpatients increased within 8 years (56.93% during 1992-1995 vs. 67.63% during 1996-1999,P80 yrs group being 23.60%, P

Effects of glipizide and metformin on serum insulin-like growth factor-1, 2 in patients with type Ⅱ diabetes mellitus / 中国临床药理学与治疗学

AimTo study the effects of glipizide and met formin on the serum IGF-1,IGF-2 in patients with type Ⅱ diabetes mellitus; Methods The effect of glipizide(n ＝ 40) and metformin(n ＝ 25) on serum IGF-1, IGF-2 in patients with type Ⅱ diabetes mellitus were compared with self- controlled study. Results In metformin-treated patients ,there were not significantly changes in fasting IGF-1 and IGF-2 concentrations, In glipizide-treated patients, there were markedly increased IGF-1 concentrations(181.8+ 104.5) vs (209.0+ 88.2) ng· ml-1(P＜0.05) while serum IGF-2 was not change. There was a significant reduction of blood glucose in two groups at the end of treatment(both P＜0.01), but C-peptide level was markedly increased(P＜0.05) only in glipizide-treatedpatients.Conclusion The changes of IGF-1 is markedly different between metformin-treated and glipizide-treated patients with type Ⅱ diabetes mellitus.

Effects of glipizide and metformin on serum insulin-like growth factor-1,2 in patients with type Ⅱ diabetes mellitus / 中国临床药理学与治疗学

Aim To study the effects of glipizide and metformin on the serum IGF_1,IGF_2 in patients with type Ⅱ diabetes mellitus;Methods The effect of glipizide(n=40) and metformin(n=25) on serum IGF_1,IGF_2 in patients with type Ⅱ diabetes mellitus were compared with self_ controlled study.Results In metformin_treated patients ,there were not significantly changes in fasting IGF_1 and IGF_2 concentrations,In glipizide_treated patients,there were markedly increased IGF_1 concentrations (181.8?104.5) vs (209.0?88.2) ng?ml-1(P

Distribution of ~(125)Iodine-labeled Interleukin-2 and its relation to insulitis in NOD mice / 中国糖尿病杂志

Objective To evaluate the feasibility of ~ 125 Iodine -labeled IL-2 scintigraphic methods for the imaging of lymphocyte infiltration of the Langerhans′ islets. Methods ~ 125 I-IL2 was injected intravenously to pre-diabetic female NOD mice (aged 16-17 weeks)and female Balb/c mice as control. Animals were sacrificed at different time points and the radioactivity in different organs was measured.~ 131 I-IL-2 was injected iv to 3 pre-diabetic female NOD mice, and pancreas was imaged through SPECT after 30 minutes injection. Results The mean radio activities in the pancreas of NOD mice were significantly higher as compared to those of Balb/c mice at time points from 30 to 120 minutes (P

RISK FACTORS OF OSTEOPOROSIS AMONG MIDDLE AND OLD AGE INTELLECTUALS-A CASE-CONTROL STUDY / 中华内分泌代谢杂志

In order to explore the risk factors of osteoporosis , a 1:1 matched case-control study was conducted on 157 pairs of intellectuals with age above 40 years. Bone mineral density of distal radius was measured using single photon absorptiometry and radiograph of calcaneus was classified according to Jhamaris's method.Multivarious factors related to diet, physical exercise, tea drinking, smoking,menstrual and reproductive history were significantly associated with osteoporosis. In a multiple conditional logistic regression model, low calcium intake, exercise index before 40 years of age, average time of exercise per week above 40 years old, tea consumption, and the number of years after menopause in women were the most important and predictive factors. The risk led by lower calcium intake was higher in women than in men. The risk due to lack of regular exercise was more prominent in men,but for both sexes lack of exercise in early years of life was more risky than that in later years. As many people have habit of excessive tea drinking, the exact effect of tea on osteoporosis deserves further study.