Development and validation of an analytical method for determination of endocrine disruptor, 2,4-D, in paddy field water.

The acidic herbicides are an important class of chemical compounds that are used to control a variety of weeds that threaten many crops. Owing to their low microbial activity levels, the acidic herbicides exhibit a residual activity remaining for periods of up to several months in soils and water. The principal objective of this study was to develop an analytical method based on liquid-liquid and solid-phase extraction followed by HPLC, for the determination of 2,4-D in paddy field water.

Full-field optical coherence microscopy for identifying live cancer cells by quantitative measurement of refractive index distribution.

The feasibility of identifying cancer cells by measuring the refractive index (RI) distribution across a single live cell with ultrahigh resolution full-field optical coherence microscopy (FF-OCM) is presented. The FF-OCM is utilized to quantify integral RI distributions of unmodified cells without any cell treatments and used as a biophysical indicator for diagnosing cell malignancy. Firstly, the physical thickness distribution of the cell adherent to a culture dish is measured by taking a series of 0.

The role of KLF4 in UVB-induced murine skin tumor development and its correlation with cyclin D1, p53, and p21(Waf1/Cip1) in epithelial tumors of the human skin.

The zinc-finger-type transcriptional factor KLF4 is expressed in a variety of tissues including skin. KLF4 can function as either a tumor suppressor or an oncogene, depending on the type of tissue in which it is expressed, by modulating the expression of various factors. To understand the role of KLF4 in human skin cancer and also to evaluate the expression of cyclin D1, p53, and p21(Waf1/Cip1) in relation to the expression of KLF4, we evaluated the pattern of KLF4 expression during UVB-induced skin tumor development in SKH-1 hairless mice and in human skin cancer.

Simultaneous multiresidue determination of 48 pesticides in Yeongsan and Sumjin River water using GC-NPD and confirmation via GC-MS.

In a continuation of our earlier work, a multiresidual analytical method using 48 frequently used neutral pesticides in a water matrix was developed and validated in this study. The samples were extracted with dichloromethane and the pesticides were analyzed via GC-NPD followed by confirmation with GC-MS. Good linearity was detected over a concentration range of 0.

Nodular colloid degeneration.

This report presents a case of nodular colloid degeneration in a 76-year-old man with a solitary facial lesion. The skin lesion was a yellowish indurated plaque on the left mandibular area. Histopathologic examination revealed the amorphous colloid material in the upper dermis.

Association between Psoriasis and Cardiovascular Risk Factors in Korean Patients.

Background: Previous studies have shown a possible association between psoriasis and cardiovascular risk factors.

Objective: We wanted to study the association between psoriasis and cardiovascular risk factors, including metabolic syndrome.

Methods: We determined the relationship of psoriasis with the cardiovascular risk factors, metabolic syndrome and cardiovascular disease.

The effect of an ossicle of the lateral malleolus on ligament reconstruction of chronic lateral ankle instability.

Background: Ossicles at the tip of the lateral malleolus are frequently found in patients with chronic lateral ankle instability (CLAI). However, the relationship between the presence or the size of an ossicle and the outcome of ligament reconstruction is poorly understood. Therefore, this study aimed to evaluate the effect of an ossicle at the tip of the lateral malleolus on ligament reconstruction in CLAI.

Development of a multiresidue method for the determination of multiclass pesticides in soil using GC.

The principal objective of the present study was to develop a multiresidue analytical method for 62 pesticides in a soil matrix. Soil samples were fortified with known quantities of pesticides at two different concentration levels (0.1 and 0.

Comparison of the proximal chevron and Ludloff osteotomies for the correction of hallux valgus.

Background: Although several studies have described good results of proximal chevron and Ludloff osteotomies, there have been no studies comparing the results of these two techniques at a single institution.

Materials And Methods: We consecutively evaluated 46 patients who underwent proximal chevron osteotomies and 52 patients who underwent Ludloff osteotomies. Patients were evaluated by preoperative and postoperative weight bearing radiographs and the American Orthopaedic Foot and Ankle Society (AOFAS) hallux MP score.

Osteochondral lesion of the talus: is there a critical defect size for poor outcome?

Background: Identifying factors associated with favorable or unfavorable outcomes would provide patients with accurate expectations of the arthroscopic marrow stimulation techniques.

Purpose: To investigate the prognostic significance and optimal measures of defect size in osteochondral lesion of the talus as treated with arthroscopy.

Hypothesis: A critical, or threshold, defect size may exist at which clinical outcomes become poor in the treatment of osteochondral lesion of the talus.

Development and validation of a multiresidue method for determination of 82 pesticides in water using GC.

Several methods used for the multiresidue analysis of pesticides from the environment and drinking water have been reported. However, most of these reports dealt with a small number of targeted pesticides or some special groups. A method that is simple, faster, and more cost-effective than the environmental protection agency (EPA) method has been developed for the analysis of 82 frequently used pesticides in water samples obtained from Yeongsan and Sumjin rivers, as well as rice fields located in various locations around the two rivers.

Diagnostic dilemma of tuberculosis in the foot and ankle.

Background: Isolated involvement of bone in tuberculous infection is uncommon, and the variable clinical and radiological features may mimic pyogenic osteomyelitis, bone tumor or other inflammatory and neoplastic processes of the synovium. We have reported our experiences with the diagnosis of tuberculosis infection in the ankle and foot with the hope of providing sufficient information about these cases to lead to early diagnosis.

Materials And Methods: We treated 15 patients with tuberculosis involving the foot and ankle between 1995 and 2005.

Chronic lateral ankle instability: the effect of intra-articular lesions on clinical outcome.

Background: There has been no attempt to correlate the type and number of intra-articular lesions with the results of ligament reconstruction for chronic lateral ankle instability.

Hypothesis: Certain intra-articular lesions affect the clinical outcome of ligament reconstruction.

Study Design: Case series; Level of evidence, 4.

Lensed fiber probes designed as an alternative to bulk probes in optical coherence tomography.

We demonstrate a compact all-fiber sampling probe for an optical coherence tomography (OCT) system. By forming a focusing lens directly on the tip of an optical fiber, a compact sampling probe could be implemented. To simultaneously achieve a sufficiently long working distance and a good lateral resolution, we employed a large-mode area photonic crystal fiber (PCF) and a coreless silica fiber (CSF) of the same diameters.

Image restoration method based on Hilbert transform for full-field optical coherence tomography.

A full-field optical coherence tomography (FF-OCT) system utilizing a simple but novel image restoration method suitable for a high-speed system is demonstrated. An en-face image is retrieved from only two phase-shifted interference fringe images through using the mathematical Hilbert transform. With a thermal light source, a high-resolution FF-OCT system having axial and transverse resolutions of 1 and 2.