Publications by authors named "Kana Ogisawa"

Background/aim: Dose-dense chemotherapy is recommended for patients with breast cancer who have a high recurrence risk. However, whether dose-dense neoadjuvant chemotherapy (ddNAC) improves patient prognoses compared to the normal-dose regimen remains controversial. In this study, we evaluated the predictive value of immune activities on short-term outcomes for patients treated with ddNAC.

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Background: Gastric adenocarcinoma and proximal polyposis of the stomach (GAPPS), a hereditary gastric polyposis syndrome that presents with fundic gastric polyposis, is associated with an increased risk of gastric adenocarcinoma. The four patterns of point mutation in the () promoter 1B region have been identified as the cause of GAPPS. GAPPS was first reported in 2012, and only 33 families with GAPPS have been reported worldwide to date.

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Purpose: A previous meta-analysis examining the relationship between statin use and breast cancer reported that the inhibitory effect of statins on breast cancer may be more pronounced in early-stage cases. In this study, we aimed to investigate the effects of hyperlipidemia treatment at the time of breast cancer diagnosis and to examine its correlation with metastasis to axillary lymph nodes among patients with so-called cT1 breast cancer whose primary lesion was 2 cm or less and was pathologically evaluated by sentinel lymph node biopsy or axillary lymph node dissection. We also investigated the effects of hyperlipidemic drugs on the prognosis of patients with early-stage breast cancer.

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Background/aim: Smoking has been a proven carcinogenic risk factor for various cancers, including breast cancer. Furthermore, smoking has been recognized as a prognostic factor of breast cancer. Bevacizumab is a monoclonal antibody to vascular endothelial growth factor (VEGF) used in combination with chemotherapy to treat breast cancer.

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Background/aim: Hypoxia is significantly associated with the development of drug resistance, and endocrine therapy is ineffective against hormone receptor (HR)-positive breast cancer in hypoxic tumor environments. Eribulin has a unique anticancer effect in breast cancer cells and improves tumor hypoxia by vascular remodeling. Therefore, we investigated the effect of eribulin on HR-positive breast cancer cells that were resistant to endocrine blockade.

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Background: Lipid metabolism has been recently reported to affect the prognosis and tumor immune activity in cancer patients. However, the effect of lipid metabolism on chemosensitivity in patients with breast cancer treated with neoadjuvant chemotherapy (NAC) remains unclear.

Methods: We examined 327 patients with breast cancer who were treated with NAC followed by curative surgery.

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Background/aim: Febrile neutropenia (FN) is a potentially life-threatening complication of chemotherapy. In this study, we evaluated the predictors for FN according to neoadjuvant chemotherapy (NAC) in all breast cancer subtypes.

Patients And Methods: We examined 327 patients with breast cancer treated with NAC.

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Background/aim: Intraoperative blood loss (IBL) during the surgical treatment of various cancers affects complication rates and prognosis. However, few studies have examined the importance of minimal IBL in breast cancer surgery. We used factor analysis to examine the prognostic importance of IBL in breast cancer.

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Article Synopsis
  • The study examines the timing of tumor-infiltrating lymphocytes (TILs) assessment in the tumor microenvironment (TME) of breast cancer patients undergoing neoadjuvant chemotherapy (NAC) to predict treatment response and prognosis.
  • Results showed that assessing TILs within 35 days before NAC initiation significantly correlates with better pathological responses and improved survival rates compared to assessments done later.
  • TILs were recognized as an independent factor influencing disease-free survival, emphasizing the importance of timely evaluation during NAC for predicting patient outcomes.
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Purpose: Various techniques are used for sentinel lymph node biopsy (SLNB) in breast cancer. While subareolar injection with dye alone is a relatively easy method, few studies have reported the outcome with a follow-up period. This study presents our results of SLNB using dye alone.

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One of the most aggressive human malignancies, anaplastic thyroid carcinoma (ATC), has an extremely poor prognosis that may be explained by its genomic instability. We hypothesized that the very rapid cell turnover observed in ATC might accelerate telomere shortening and chromosomal instability associated with tumor cell malignancy. To compare and measure chromosomal aberrations and telomere shortening in the anaplastic thyroid cancer cell line OCUT-1, we applied quantitative fluorescence in situ hybridization (Q-FISH) techniques.

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Purpose: Telomerase activity (TA) has been extensively studied in tumors of many organs, but not the parathyroid gland. Therefore, we investigated TA in parathyroid tumors, and examined the mRNA expression of its catalytic subunits.

Methods: We examined 17 single adenomas, one hyperplastic parathyroid gland, and one metastatic parathyroid cancer and quantified TA by fluorescence-based TRAP analysis.

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Anaplastic thyroid carcinoma is one of the most aggressive human malignancies. Outcomes of intensive multimodal therapy have been far from satisfactory. Furthermore, p53 gene dysfunction, often found in this type of cancer, is known to impair the efficacy of the therapeutic agents.

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Background & Objectives: Undifferentiated thyroid cancer is one of the most aggressive human malignancies, and the prognoses that have been reported are extremely poor. A number of studies have described the clinicopathologic features of this tumor and analyzed its biologic background to explain the extraordinarily aggressive nature of the tumor. Still the mechanism of cellular aggressiveness in undifferentiated thyroid cancer is not yet fully understood.

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