Prospective associations of circulating thrombospondin-2 level with heart failure hospitalization, left ventricular remodeling and diastolic function in type 2 diabetes.

BACKGROUND: Circulating thrombospondin-2 (TSP2) levels were associated with the development of heart failure (HF) in recent studies. However, these studies included only a minority of patients with type 2 diabetes, which is associated with an increased HF risk. As hyperglycemia induces TSP2 expression and its tissue expression increases in type 2 diabetes, we investigated the prospective association of circulating TSP2 with incident HF hospitalization (HHF), and its associations with longitudinal changes of echocardiographic parameters in type 2 diabetes. METHODS: Baseline serum TSP2 levels were measured in 4949 patients with type 2 diabetes to determine its association with incident HHF using multivariable Cox regression analysis. In the echocardiographic study, baseline serum TSP2 levels were measured in another 146 patients with type 2 diabetes but without cardiovascular diseases who underwent detailed transthoracic echocardiography at baseline and after 1 year. RESULTS: Over a median follow-up of 7.8 years, 330 of 4949 patients (6.7%) developed incident HHF. Baseline serum TSP2 levels were independently associated with the development of HHF (HR 1.31, 95%CI 1.06-1.62, p = 0.014) after adjustments for baseline conventional cardiovascular risk factors, atrial fibrillation, estimated glomerular filtration rate, albuminuria and high-sensitivity C-reactive protein level, use of angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, loop-diuretics, aspirin, insulin, metformin and sodium-glucose co-transporter 2 inhibitors. Moreover, baseline serum TSP2 levels were independently associated with increase in average E/e' and left atrial volume index (p = 0.04 and < 0.01, respectively). CONCLUSION: Serum TSP2 levels were independently associated with both incident HHF and deterioration in diastolic function in type 2 diabetes. TRIAL REGISTRATION: Not Applicable.

[Prognostic value of total cholesterol content of erythrocyte membranes in patients with acute coronary syndrome].

Objective: Previous cross-sectional studies suggested that elevated levels of total cholesterol content of erythrocyte membrane (CEM) could significantly increase the risk of acute coronary syndrome (ACS). The purpose of the present study was to assess the predictive value of baseline CEM levels for the risk of clinical endpoint events in patients with ACS through prospective follow-up studies. Methods: This study is a prospective follow-up study, which consisted of 859 patients with first ACS (698 patients with unstable angina pectoris and 161 patients with acute myocardial infarction), diagnosed and hospitalized in the First and Second Affiliated Hospital of Anhui Medical University. The routine blood lipid levels and CEM were measured. Patients were divided into two groups according to the median of baseline CEM: CEM≤131.56 µg/mg group (n=430) and CEM>131.56 µg/mg group (n=429). Patients were followed up at 6 months interval. The clinical endpoints were nonfatal myocardial infarction, nonfatal stroke, all-cause mortality, all-cause mortality, heart failure requiring hospitalization, and coronary artery revascularization. Kaplan-Meier curve analysis and Cox proportional hazard model were used to analyze the impact of elevated CEM on the occurrence of clinical end-point events. HR values and 95%CI of each variable were obtained. Cox regression analysis of all-cause mortality was performed according to whether patients had risk factors for coronary heart disease (hypertension, diabetes, smoking and elevated LDL-C) and whether they were treated with PCI. Results: The follow-up time was 1 640 (1 380, 2 189) days. Cox analysis after adjustment showed that an elevated baseline of CEM (>131.56 µg/mg) was associated with an increased risk of all-cause mortality (HR=1.690, 95%CI 1.041-2.742, P=0.034), but had no significant predictive effect on the other clinical endpoints. Subgroup analysis showed that elevated baseline CEM levels in ACS patients with LDL-C>1.8 mmol/L (HR=1.687, 95%CI 1.026-2.774, P=0.039), receiving in-hospital PCI (HR=2.365, 95%CI 1.054-5.307, P=0.037), or male (HR=1.794, 95%CI 1.010-3.186, P=0.046) were associated with an increased risk of all-cause mortality. Conclusion: The results showed that elevated CEM levels can increase the risk of all-cause mortality in ACS patients.

Epidemiological analysis of 18 patients with COVID-19.

OBJECTIVE: The present study aimed to explore the transmission pattern and the incubation period of coronavirus disease 2019 (COVID-19) as well as the clinical characteristics of infants with COVID-19 to provide a scientific basis for introducing further measures to reduce the infection rate and control the pandemic. PATIENTS AND METHODS: A descriptive epidemiological study of 18 patients with COVID-19 in People's Hospital of Deyuan was carried out. Among these patients, 16 cases were connected with clusters (11 family-cluster cases and 5 public-cluster cases). The basic characteristics, clinical symptoms, and epidemiological characteristics of the patients were considered in the investigation. RESULTS: The median age of the 18 patients was 44.5 years (37.5-52.0 years), and there were 10 males and 8 females in the sample. The main clinical symptoms were fever and cough. The epidemiological characteristics were as follows: (1) the median incubation period was 8 days (with an interquartile range of 4-12 days); (2) the incubation period in one case was ≥18 days; (3) one infant patient was asymptomatic prior to their diagnosis; and (4) two asymptomatic patients had a positive nucleic acid test after their family members were diagnosed with COVID-19. CONCLUSIONS: COVID-19 can be transmitted in many ways, including via respiratory droplets and indirect contact, and it spreads easily among close contacts. People with a history of contact with areas affected by the disease should be isolated at home for 14 days. Moreover, attention should be focused on the issues of asymptomatic infectors, asymptomatic infants, and infants with mild symptoms.

Accumulation and translocation of toxic heavy metals in winter wheat (Triticum aestivum L.) growing in agricultural soil of Zhengzhou, China.

A field experiment was conducted to study the accumulation of toxic heavy metals by winter wheat (Triticum aestivum L.) grown in the agricultural soil in the suburb of Zhengzhou City, China. The quantities of heavy metals (Cd, Cr, Pb, As, Hg) were determined in different parts of wheat plant. The content of five toxic metals was found significantly higher in roots than in the aerial parts of wheat (stems and leaves, and grains). Additionally, wheat roots were enriched in Cd, Pb, and Hg from the soil, while Cr and As were hardly taken up by the roots. On the other hand, the winter wheat transported five toxic heavy metals very weakly from root to grain in the various irrigation regions.

[CT findings of juvenile laryngeal papilloma spreading in bronchia and lung].

Objective:To investigate the imaging findings of juvenile laryngeal papilloma spreading in the bronchia and lung with spiral CT. Method: Seven cases of juvenile laryngeal papilloma spreading in bronchia and lung were collected．All cases were confirmed by operation and pathology. Spiral CT scans were performed in seven cases, contrast scanning were performed in three cases. MPR were performed in two cases. Imaging findings in all cases were retrospectively reviewed． Result: Findings of CT scan in seven patients showed scattered and multiple, unequal-sized nodular shadows and airbag cavity, randomly distributed in the centre and peripheral of lung along the airway, the nodules are homogeneous soft tissue density or liquid density; with air cavity are sac, available for thin-walled cystic wall, or a thick wall, give priority to with thin wall, most of the capsule wall were smooth, part of vesicles were connected to the bronchi, seldom complicated with lung inflammation. Conclusion: Juvenile laryngeal papilloma in the spread of bronchia and lung exhibits some imaging features on spiral CT, which can be the clue for the diagnosis and can be helpful to improve the diagnostic accuracy.

Kinetics and functional assay of liver repopulation after human cord blood transplantation.

BACKGROUND AND AIMS: To evaluate donor cell engraftment and the kinetics of cell repopulation in the injured mouse liver following human umbilical cord blood cell transplantation. METHODS: Nonobese diabetic/severe immunodeficient mice were treated with allyl alcohol to induce liver injury. Twenty-four hours later, umbilical cord blood derived mononuclear cells were transplanted by intra-splenic injection. Mice were sacrificed from 1 to 180 days after transplantation. Temporal changes in the ratio of human cells and fluorescence counts of human sex-determining region Y alleles in mouse liver were determined to evaluate the kinetics of cell repopulation. Mouse liver and sera were examined for the presence of human albumin. RESULTS: Human cell repopulation was extremely rapid in the first week following transplantation, with a doubling time of 1.16-1.39 days apparent. Thereafter cell doubling rate slowed significantly. Cells displaying characteristics of human hepatocytes were still evident at 180 days. Human albumin was detected in mouse liver and sera. CONCLUSION: These findings confirm those from previous studies demonstrating that cells derived from human umbilical cord blood have the capacity to differentiate into cells with human hepatocyte characteristics in mouse liver following injury. Moreover, the detailed information collected regarding the kinetics of human cell repopulation in mouse liver will be of relevance to future studies examining the use of umbilical cord blood cells in liver transplantation therapy.

Activation of ephrinB-EphB receptor signalling in rat spinal cord contributes to maintenance of diabetic neuropathic pain.

BACKGROUND: Diabetic neuropathic pain (DNP) is severe and intractable in clinic. The specific cellular and molecular mechanisms underlying DNP remain elusive and its treatment are limited. We investigated roles of EphB1 receptor in the development of DNP. METHODS: Diabetic neuropathic pain was produced in male, adult, Sprague-Dawley rats by a single i.p. streptozotocin (STZ) or alloxan. Western blot analysis and immunohistochemistry were used to analyse expression of EphB1 receptor as well as the activation of the glial cells and the pro-inflammatory cytokines in the spinal cord. DNP manifested as mechanical allodynia, which was determined by measuring incidence of foot withdrawal in response to mechanical indentation of the hind paw by an electro von Frey filament. RESULTS: Diabetic neuropathic pain and high blood glucose were exhibited simultaneously in around 70% of animals that received i.p. STZ or alloxan. Phosphorylation of EphB1, activation of the astrocytes and microglial cells, and level of tumour necrosis factor (TNF)-α and interleukin (IL)-1ß in the spinal cord were significantly increased in rats with DNP. Spinal blocking EphB1 receptor activation in the late phase after STZ injection significantly suppressed the established mechanical allodynia as well as activation of the astrocytes and microglial cells and activity of TNF-α and IL-1ß. However, spinal treatment of EphB1-Fc in the early phase after STZ injection did not prevent the induction of DNP. CONCLUSIONS: EphB1 receptor activation in the spinal cord is critical to the maintenance, but not induction of diabetic pain. EphB1 receptor may be a potential target for relieving the established diabetic pain. SIGNIFICANCE: Activation of EphB1 receptor in the spinal cord is critical to maintaining the established diabetic neuropathic pain, but not to diabetic pain induction. Spinal blocking EphB1 receptor activation suppresses ongoing diabetic neuropathic pain.

[Using Guangming (GB37) acupoint to treat eye diseases: from historical suspense to modern clinical experiments].

Guangming (GB37) gained its name before the writing of Huang di Ming Tang Jing (The Yellow Emperor's Mingtang Classic), the earliest work of the art of acupuncture point. However, in acupuncture and moxibustion works before the Song Dynasty, this acupoint was not used to treat eye diseases. In Dou Hanqing's Zhen jiu biao you fu (Song to Elucidate Mysteries in Acupuncture Moxibustion), Guangming was used to treat oculopathy as an alias of Cuanzhu (BL2). Influenced by this, the alias "Guangming" was mistaken as Guangming (GB37) of the Gallbladder Meridian in the Bian que shen ying zhen jiu yu long jing (Bian Que Acupuncture and Moxibustion Jade Dragon Classic) of the Yuan Dynasty, and the symptom of eye itch was added to the indications of Guangming (GB37). This was wrongly informed in the later acupuncture and moxibustion works, and the modern scholars also accepted it and confirmed its effect by the clinical and experimental research.

Low-power laserthermia for the treatment of small hepatocellular carcinoma.

Laserthermia by a novel interstitial probe adapted to low power Nd-YAG laser machine was used to treat small hepatocellular carcinoma (HCC). The set condition was 43-45 degrees C in thermocouple with power of 2-3 W and the duration 20-30 min. In the 5 cases studied, 1 had a good result with total necrosis of the tumour without recurrence in 16 months. 1 died of liver failure 2.5 months later although death was not related to the procedure. 1 patient died of progressive disease 18 months later. The remaining 2 had recurrent tumours 5 and 12 months later, although the treated small tumours showed good response. Histological examination showed cell degeneration and necrosis. It is concluded that laserthermia is potentially useful in the treatment of the patients with small HCC.

Somatic mutations of beta-catenin play a crucial role in the tumorigenesis of sporadic hepatoblastoma.

Hepatoblastoma (HB) is the most common malignant hepatic tumor during early childhood. Its molecular pathogenesis is still poorly understood. Mutations of adenomatous polyposis coli (APC) gene have been identified in sporadic cases and in individuals associated with familial adenomatous polyposis syndrome. beta-catenin is a key element in the cadherin-mediated cell adhesion system and Wnt/wingless pathway, and is controlled by APC. APC affects the degradation of beta-catenin by its NH(2)-terminal phosphorylation on the serine/threonine residues of exon 3. Mutations of these phosphorylation sites are primary targets for activating mutations in several types of human cancer and lead to nuclear accumulation of beta-catenin protein. In this study, we examined nine patients with HB using immunohistochemistry and direct DNA sequencing. All nine cases showed predominant nuclear expression of beta-catenin. Eight cases (89%) showed mutations involving exon 3 of the beta-catenin gene, including five with deletions and three with missense mutations. All five deletions were in-frame deletions without frameshift. The very high frequency of mutations in the beta-catenin gene suggests that beta-catenin mutations are crucial in the tumorigenesis of HB.

The effect of intrauterine devices, the stainless steel ring, the copper T220, and releasing levonorgestrel, on the bleeding profile and the morphological structure of the human endometrium--a comparative study of three IUDs. A morphometric study of 96 cases.

Thirty-four women using the stainless steel ring (SS), 43 women using the Copper T220 (TCu), and 19 women using levonorgestrel-releasing intrauterine devices (LNG) were admitted to the study. The light microscopic biopsy material was subjected to morphometric studies including 8 indices of endometrial activity before (Control) and after 24 months of exposure to the SS and TCu device and 3-10 months of exposure to the LNG device. The women were grouped into subjects with and without intermenstrual and prolonged bleeding. The results revealed that there were highly significant differences between the IUDs at the endometrial level as displayed by morphometry. However, the difference between bleeders and non-bleeders was not significant in any of the three types of IUDs. Although the mode of action of these IUDs at the endometrial level is different, the mechanism responsible for the irregular endometrial bleeding needs to be further investigated.

Mononucleosis and hepatic failure associated with diphenylhydantoin treatment in an infant.

Diphenylhydantoin-induced hepatitis and mononucleosis are uncommon in children. The occurrence of these two diseases in the same individual, with progression to hepatic failure is rare and has not been reported in infants. This report represents a 6-month-old male infant who developed an infectious mononucleosis-like syndrome and hepatic failure 16 days after diphenylhydantoin administration. He took this anticonvulsant for controlling seizures after a head injury. Fever, skin rash, hepatosplenomegaly, lymphadenopathy, and atypical lymphocytosis led to the initial diagnosis of infectious mononucleosis. However, negative heterophil antibody did not support the diagnosis. Jaundice ensued in the following course and became more and more profound. Meanwhile, physical examination showed shrinking in liver size. Negative virology studies, including Epstein-Barr virus, cytomegalovirus, and hepatitis B virus, excluded them as causative agents. The patient lapsed into a stage I hepatic coma, but gradually recovered clinically and biochemically after eight successive exchange transfusions and supportive care. Two liver biopsies were performed 20 and 50 days after the onset of disease, respectively. Remarkable hepatic parenchymal loss, cholestasis, and fatty change were found on histologic examination of the first biopsy specimen, and portal fibrosis was noted on the second.

Neonatal intestinal perforation caused by congenital defect of the small intestinal musculature: report of one case.

Congenital defect of the small intestinal musculature is a rare cause of neonatal spontaneous intestinal obstruction or perforation. Its etiology and pathogenesis are still controversial. A male infant presented with intestinal obstruction at two days of age and rapidly progressed to perforation and septic shock. He died at seven days of age. Autopsy finding revealed a perforation hole at twenty-five cm proximal to ileocecal valve. Histology examination demonstrates multifocal deficiency of the inner circular muscle layer three cm around the perforation site. The clinical and histological characteristics are reviewed and discussed. We propose that the muscle defect of small intestine, especially ileum, is secondary to ischemic injury rather than an embryological malformation.

Unusual manifestations of vertebral osteomyelitis: intraosseous lesions mimicking metastases.

BACKGROUND AND PURPOSE: Vertebral osteomyelitis can have different imaging manifestations. The purpose of this study was to demonstrate the unusual MR imaging patterns of vertebral osteomyelitis with intraosseous lesions mimicking metastases. MATERIALS AND METHODS: From September 2000 to August 2007, 7 patients were selected from our data base of 214 patients with confirmed vertebral osteomyelitis and MR images. All of those having misinterpreted MR imaging reports and unusual imaging patterns were analyzed. The presence of a peripheral curvilinear area of low signal intensity in an osseous lesion (the rim sign) and a peripheral rim of high signal intensity on T2-weighted images around an osseous lesion (the halo sign) was evaluated. Follow-up MR imaging studies were performed in all patients. RESULTS: The patients were 5 men and 2 women, with an age range of 42-80 years. MR imaging findings of those with vertebral osteomyelitis showed a solitary lesion in 2 and multiple lesions in 5 patients. The intraosseous lesions revealed low signal intensity on T1-weighted images, mixed or high signal intensity on T2-weighted images, high signal intensity on short tau inversion recovery images, and global or marginal enhancement. The rim sign was found in 6 (86%) patients; halo sign, in 7 (100%); preserved intervertebral disks, in 7 (100%); and limited paraspinal or epidural inflammation, in 6 (86%). Images of all patients demonstrated healing or almost healed changes on the follow-up MR imaging studies. CONCLUSION: Vertebral osteomyelitis can have MR imaging patterns mimicking osseous metastases. Recognition of these unusual imaging manifestations, together with clinical and histopathologic analysis, may aid in reaching the correct diagnosis.

[Laparoscopy for patients with postoperative complications following female tubal sterilization].

PIP: 15 cases of postoperative complications following tubal sterilization were examined and/or treated by laparoscopy. The clinical diagnosis was confirmend in 5 cases and corrected in 3 with this technique. In the remaining 7 in which the diagnosis was ambiguous, a comprehensive evaluation of pelvic lesions was made possible by laparoscopy. After the procedure, the symptoms disappeared in 6 cases and were patially alleviated in 7. Adhesions can be lysed during the operation, which may save the patients from anotherwise inevitable laparotomy. In addition, laparoscopy has proven useful in the diagnosis and subsequent treatment of poststerilization distension of the intestinal and pelvic varicosities. Therefore, the authors believe laparoscopy is a useful procedure in the detection and treatment of complications following tubal sterilization. (author's modifed)^ieng