Finite element analysis of the indirect reduction of posterior pedicle screw fixation for a thoracolumbar burst fracture.

Because burst fractures often involve damage to the column and posterior structures of the spine, the fracture block may invade the spinal canal and compress the spinal cord or the cauda equina, causing corresponding neurological dysfunction. When a thoracolumbar burst fracture is accompanied by the presence of bone in the spinal canal, whether posterior surgery requires spinal canal incision decompression is still controversial. Computed tomography images of the thoracolumbar spine of a 31-year-old male with an L1 burst fracture and Mimics 10.

Why flowers close at noon? A case study of an alpine species (Gentianaceae).

Repeatable floral closure with diurnal rhythms, that is, flower opening in the morning and closing in the evening, was widely reported. However, the rhythm of flower opening in the morning but closing in the midday received much less attention. , Gentianaceae, has an obvious petal movement rhythm opening in the morning and closing at noon at northeast of the Qinghai-Tibetan Plateau.

Urbanization threaten the pollination of Gentiana dahurica.

With rapid spread of the urbanization, many environmental factors, such as climate, soil pH and nutrients have been changed. However, the plant pollination affected by urbanization was seldom conducted. Here, we studied the flower visitation rates, seed production, pollen limitation and flower morphological characters of Gentiana dahurica at 3 populations along an urban-peri-urban gradient around Xi'ning over 4 consecutive years, aiming to test the effects of urbanization on plant pollination service.

Association between ALDH1+/CD133+ stem-like cells and tumor angiogenesis in invasive ductal breast carcinoma.

The growth and metastasis of tumors is dependent on angiogenesis; however, the association between tumor stem cells (TSCs) and tumor angiogenesis remains to be elucidated. The present study aimed to investigate the expression of the TSC markers aldehyde dehydrogenase 1 (ALDH1) and cluster of differentiation 133 (CD133) in invasive ductal breast carcinoma, and identify their correlation with tumor angiogenesis. Stem-like cells from the breast tissue of 120 patients, who were diagnosed with invasive ductal breast carcinoma at The First Affiliated Hospital of Zhengzhou University (Zhengzhou, Henan, China) between January 2009 and December 2010, were collected by surgical resection and analyzed using immunohistochemical double staining.

Primary mucosal CD30-positive T-cell lymphoproliferative disorders of the head and neck rarely involving epiglottis: clinicopathological, immunohistomchemical and genetic features of a case.

A case of primary mucosal CD30-positive T-cell lymphoproliferative disorder of the head and neck rarely involving epiglottis in a 59-year-old male was reported. Histologically, the ulcerative mucosa was affected by sheets of mixed inflammatory infiltration, with scattered large atypical lymphoid cells arranging in an individual or small clusters with focal epidermotropism. Immunohistochemically, tumor cells were uniformly immunoreactive to antibodies against CD2, CD3, CD7, CD43, CD4, TIA-1, with a heterogeneous expression of CD30, but negative for CD20, CD79a, CD21, CD8, CD56, ALK, EMA, granzyme B.

knockdown enhances the effects of fluorouracil in the breast cancer cell line MDA-MB-468.

Tumor proliferation, drug resistance and cell stemness are major difficulties that are encountered during breast cancer therapy and are often responsible for disease progression and cancer-related mortality. is considered to be an invasion gene in breast cancer. However, how regulates breast cancer cell proliferation and stemness remains unclear.

[Expressions of Dab2 and ERK1 in esophageal carcinoma tissues and their clinical significance].

Objective: To explore the expressions of protein and mRNA of disabled-2 (Dab2) and extracellular signal-regulated kinase1 (ERK1) in esophageal squamous cell carcinoma tissue (ESCC) and their clinical significance.

Methods: The expressions of protein and mRNA of Dab2 and ERK1 were detected in ESCC (n = 59), atypical hyperplasia (n = 27) and normal esophageal mucosa (n = 36) tissues by immunohistochemistry, in situ hybridization and reverse transcription polymerase chain reaction (RT-PCR).

Results: The expressions of protein and mRNA of Dab2 were lesser in ESCC than those in atypical hyperplasia and normal esophageal mucosa tissues (23.