Aged ; Diagnosis, Differential ; Humans ; Intermittent Claudication ; diagnosis ; etiology ; Male ; Middle Aged ; Nervous System Diseases ; complications ; diagnosis ; Vascular Diseases ; complications ; diagnosis

Objective To study Ax subgroup’s molecular characteristics in Chinese Han population. Methods Eight samples suspected as Ax subgroup were analyzed and duplex PCR RFLP test was used to determine the primary ABO genotypes. These samples were then analyzed by another PCR RFLP test to identify whether there was an nt646 “T” to “A” mutation within the exon 7 of ABO gene, which was a known mutation related to most Ax phenotypes. Samples with discrepancy between serological and gene typing were chosen for further T A cloning and sequence analysis. Results Four out of all tested samples had the known nt646 “T” to “A” mutation. An A *weak01 allele including nt407 and nt467 “C” to “T” mis sense mutation was detected in this study. Moreover, a novel Ax allele with a new single nucleotide C to T mutation was detected at nt745. Another 2 unrelated samples were suspected as AxB through serological test, both of which contained higher quantities of anti A and showed strong agglutination with anti H. And their initial genotypes were BO, and sequence analysis clarified that both had normal O gene and novel nt640 “A” to “G” mutation in their B alleles. Conclusion The novel Ax alleles, one kind of novel B(A) allele and one A *weak01 allele in Chinese Han individuals,have been detected. B(A) phenotypes should have their molecular biology bases as well as other ABO subgroups.

Humans ; Occupational Diseases ; diagnosis

BACKGROUND:At present, the common filing materials used to correct secondary unilateral cleft lip nasal deformity include conchae cartilage, costal cartilage, Medpor implants, expanded polytetrafluoroethylene (ePTFE), alogenic acelular dermal matrix. OBJECTIVE:To analyze the therapeutic effects of comprehensive procedures with alogenic acelular dermal matrix or ePTFE for secondary unilateral cleft lip nasal deformity. METHODS: Thirty-six patients with secondary unilateral cleft lip nasal deformity were enroled, including 19 males and 17 females, aged 15-32 years. Alogenic acelular dermal matrix (n=22) or ePTFE (n=14) was used to correct nasal base colapse deformities. Anthropometry method was employed to make measurements. Fixed-point measurement was performed based on patient's pictures before and after correction. Long-term effects of these two kinds of filing materials were analyzed and assessed objectively and quantitatively. RESULTS AND CONCLUSION: After the folow-up of 6 months, al the patients were satisfied with their results, and no infection and no exposure occurred. The treatment effect of the alogenic acelular dermal matrix group was excelent in 16 cases and good in 6 cases; there were 10 cases of excelent and 4 cases of good in the ePTFE group. The objective indicators in the two groups were al improved at 6 months after correction (P < 0.05), but there was no difference between the two groups (P > 0.05). These findings indicate that alogenic acelular dermal matrix or ePTFE is useful to correct secondary unilateral cleft lip nasal deformity.

Objective To find the rule of the distribution of H antigens on AB subgrouperythrocytes.Methods ABO subgroups were confirmed by using serological and molecular biology (PCR-RFLP) methods. AB subgroup with strong H was defined as red cell agglutination by anti-H of 2 scores or more higher than that of B cells.Results Strong H was only found in certain AB subgroups ,CisAB(100%),B(A)(100%), AxB(46.2%) and A2B(43.6%), but seldom in others among Chinese population.Conclusion The fact that H type-3, which comes from A type-2, can hardly be transferred by B and weak A glycosyltransferase can help to explain why some ‘strong’ H combines with ‘weak’ A in AB erythrocytes. Why only little H can be found in 53.8% AxB, 56.4% A2B and all A3B, AmB subgroup samples still cannot been explained.

Herbicides ; poisoning ; Humans ; Paraquat ; poisoning ; Poisoning ; metabolism ; pathology ; therapy

Probability of causation (PC) was used to facilitate the adjudication of compensation claims for cancers diagnosed following exposure to ionizing radiation. In this article, the excess cancer risk assessment models used for PC calculation are reviewed. Cancer risk transfer models between different populations, dependence of cancer risk on dose and dose rate, modification by epidemiological risk factors and application of PC are also discussed in brief.

Objective To study the changes of iodine source and the nutritional status of iodine after termination of iodized salt supply in the areas with different water iodine concentrations in Shanxi province,in order to provide scientific bases for developing strategies on control and prevention of iodine deficiency disorders,and to study the cut-off value of water iodine level where iodized salt supply should be stopped.Methods In 2010 in Shanxi province,6 villages with 100％ of non-iodized salt consumption rate were selected as the survey spots based on the iodine concentration in drinking water of 0-,50-,100-,150-,300-,≥500 μg/L.Villages'iodized salt supply was terminated thoroughly.In each village,20 children aged 8 to 10 were selected.At the same time,women of childbearing age 18 to 50 years old and adult men aged 18 to 60 were selected from the same families as the children.Diet surveys were conducted by the method of 3 days recall on all subjects.Drinking water samples,staple foods,supplementary foods and urinary samples of all subjects were collected and the iodine concentration was determined by arsenic-cerium catalytic spectrophotometry.Results ①In the villages of water iodine 25.9,70.6 μg/L,the medians urinary iodine of children,women and men were all ranged from 100 to 199 μg/L,which meant their iodine nutrition levels were appropriate.In the village of water iodine 109.0 μg/L,the medians urinary iodine of children,women and men were all ranged from 200 to 299 μg/L,which meant their iodine nutrition levels were more than appropriate.In the villages of water iodine 225.8,430.0,581.2 μg/L,the medians urinary iodine of children,women and men were all ≥ 300 μg/L,which meant their iodine nutrition levels were too high.②)In all the 6 villages,the intaking amount of iodine met and exceeded the standard recommended intake of dietary iodine by ICCIDD/UNICEF/WHO (8 to 10-year-old children ≥ 120 μg/d,women of childbearing age and adult men ≥ 150 μg/d).But in the village of water iodine 581.2 μg/L,the iodine intake was exceeded the daily maximum safe intake (children aged 8 to 10 ≤800 μg/d,women of childbearing age and adult man ≤ 1000 μg/d).③The amount of iodine ingestion from drinking water was increased with the water content of iodine.When water iodine exceeded 100 μg/L,the amount of iodine ingestion from drinking water was higher than from food intaking,and became a main resource of iodine in the human body.Conclusions In the counties of iodine concentration in drinking water above 100 μg/L in high iodine areas of Shanxi province,the water iodine becomes the most important source of iodine,and iodine nutritional level is more than appropriate or possible excess.It is recommended that in areas of high water iodine of Shanxi province,the standard cut-point of water iodine value is set to 100 μg/L.

Objective To investigate the morphology characters of upper airway and its surrounding tissues in different age non-snoring males.Methods Total of 114 non-snoring males,with age-nlnge from 22 to 78 year old,were included in this study.They were divided into 3 groups:30 in younger group (22-29 years old),57 in middle-aged group(36-57 years old),and 31 in aged group(70-78 years old).All subjects had magnetic resonance imping sanning.Results (1)The nasopharynx in aged group was statistically different from that of the younger group and the midge aged group.The volume of nasopharynx in aged group(7.81±1.59)cm3 (χ-±s,same hereinafter) is greater than that in younger group(4.89±1.20)cm3 and middle aged groups(6.06±2.07)cm3.(2)The AP diameter/transverse dimeter of velophatynx,glossopharynx and laryngopharynx in the aged group tended to be smaller.The average value of AP diameter/transverse diameter of velopharynx in aged group is 0.46±0.14.while the value is 0.59±0.14 and 0.57±0.14 in midge and young groups respectively,compared with that of the aged group,there is statistical diffrence(P＜0.01).Further more,the min/max Section area of velophatynx,glossopharynx,hryngopharynx in aged group are smaller than that of young group and midlife groups.(3)The aged group had the thinnest thickness of posterior and lateral velopharyngeal walls,but the largest volume of soft palate and fatpads among all groups.Conclusions In non-snoring males,there is more fat deposition around the upper airway with aging.While the large naxopharynx and large transvdrse diameter of upper airway seem to balance the disadvantaged changes and to benefit the their sleep respiration.

Background Ginkgolide B (GB) has been proved to have neuroprotective and anti-apoptotic effects and can effectively inhibit apoptosis of retinal photoreceptor cells.But the high hydrophobic feature and low bioavailability of GB limit its clinical application.Self microemulsifying drug delivery system (SMEDDS) can effectively improve the infusibility drug dissolution and bioavailability in the retina.Objective This study was to investigate the pharmacokinetics and drug-time change of GB-loaded SMEDDS in retina.Methods Eighty SD rats were randomized into 2 groups,2.5％ GB(40 mg/kg) of SMEDDS or GB suspension(0.1％ DMSO dissolve) were gastrically given respectively in two groups.The rats were sacrificed and retinas were isolated 15,30,45 minutes and 1 hour,2,4,8,12 hours to prepare the retinal suspension.The content of GB in retina was assayed with high performance liquid chromatography-electrospray ionization-(1) (1)ss spectrum (HPLC-ESI-MS) and contrasted with standard curve.Practical drug dynamics program 3p87 was used to detect the pharmacokinetics parameters.The maximal content(Cmax,mg/g),time to peak (Tmax,h),clearance ratio (Ke/h),high-life period (t1/2) and area under the concentration-time curve(AUC0-∞,mg/(g · h)) of GB in various time points in retina after a single oral dose were calculated and compared between two groups.Results The standard curve was obtained over the concentration range of 1-32 mg/L with a linear regression equation,Y =0.0732X + 0.056 (r =0.992).A similar content-time curve was seen between GB suspension group and GB-SMEDDS group.The GB content was higher in GB-SMEDDS group than that in GB suspension group from 30 minutes through 12 hours after administration of drugs.The Cmax of GB-SMEDDS group and GB suspension group were(15.83±1.84) mg/g and(2.65±0.10) mg/g,the AUC0-∞ were(15.30±0.11)mg/(g· h)and(6.42±0.19)mg/(g · h).Conclusions HPLC-ESI-MS is proved to be a rapid,accurate,sensitive and suitable method for pharmocokinetic study of GB.SMEDDS can raise the concent of GB in retina,and it probably improve the bioavailability of GB.