Myeloid-derived suppressor cells (MDSCs) have been identified in the majority of patients and experimental mice with tumors by their suppression of T cell activation. MDSCs have also been reported to be associated with chronic inflammation. In advanced cancer, the T helper (Th) cell balance tends to shift from Th1 to Th2 predominance, and immune function, including cell‑mediated immunity, is impaired by cytokines produced by Th2 cells. The present study examined the correlations between MDSC levels and inflammation, immune suppression, malnutrition, and poor prognosis in 155 patients with breast cancer. The levels of MDSCs in preoperative patients and in patients with recurrent breast cancer were significantly higher compared with postoperative patients, patients with recurrent breast cancer who received chemotherapy and healthy volunteers. The MDSC levels of preoperative patients were significantly positively correlated with interleukin (IL)‑6 production by peripheral blood mononuclear cells (PBMCs), the neutrophil/lymphocyte ratio and C‑reactive protein, and were negatively correlated with the production of interferon‑γ and IL‑12, serum concentration of rapid turnover protein, and the stimulation index. These patients were divided into two groups based on the levels of MDSCs. In preoperative patients with MDSC levels >1.0% of total PBMCs, the overall survival of patients with stage IV disease was significantly shorter compared with other disease stages, and was also significantly shorter compared with patients with MDSC levels <1.0% of total PBMCs. Thus, the MDSC levels of preoperative patients may function as a good prognostic indicator, particularly in patients with advanced breast cancer.

Gastric cancer continues to be a major cause of morbidity and mortality worldwide. Recently, there has been a growing interest in the host inflammatory response and there is increasing evidence that the neutrophil to lymphocyte ratio (NLR), which is a useful marker of systemic inflammation, can be an effective prognostic indicator in various types of malignant diseases. A total of 110 patients with stage IV gastric cancer who received chemotherapy of S‑1 plus cisplatin were enrolled in this study. Eleven patients did not complete four cycles of the chemotherapy. The patients were divided into two groups with 3.0 of NLR. The percentage of patients with a partial response to chemotherapy was significantly higher in the group of patients with a lower NLR (<3) (19.1 vs. 38.5%, high vs. low NLR group, respectively; P<0.05). The percentage of patients with progressive disease was higher in the high vs. low NLR group (57.4 vs. 25.0%, respectively; P<0.05). NLR levels were significantly inversely correlated with serum levels of prealbumin (P<0.01) and retinol binding protein (P<0.05). NLR levels were also significantly correlated with c‑reactive protein levels (P<0.05), white blood cell count (P<0.05) and inversely with the stimulation index (a marker of cell‑mediated immune function; P3.0). The present study demonstrated that the NLR is a useful marker for resistance to chemotherapy, malnutrition, systemic inflammation and immune suppression. Moreover, the NLR was demonstrated to be a strong prognostic indicator in these patients.

Esophageal squamous cell carcinoma (ESCC) is one of the most common types of cancer, and its progression is strongly influenced by the presence of inflammation. Recently, there has been growing interest in the host inflammatory response, and increasing evidence has indicated that the neutrophil‑to‑lymphocyte ratio (NLR), a useful marker of systemic inflammation, may be an effective prognostic indicator in various types of malignant diseases. In the present study, 260 patients with ESCC were enrolled, including 110 who received chemoradiation therapy (CRT) involving irradiation and chemotherapy of 5‑fluorouracil and cisplatin, and 150 received chemotherapy using 5‑fluorouracil and cisplatin (FP). The patients of each group were both divided into two groups according to their NLR: High NLR (NLR>3.0) and low NLR (NLR≤3.0). Serum levels of prealbumin and retinol binding protein, which are nutritional parameters, were both significantly inversely correlated with NLR in patients treated with CRT, and patients treated with FP. Levels of CRP, a marker of inflammation, were significantly correlated with NLR, and stimulation indices, markers of immune reactions, were inversely correlated with NLR in both of CRT patients and FP patients. In patients treated with CRT, a partial response was significantly higher in patients with a low NLR and with progressive disease compared to those with a high NLR. In patients treated with FP, a partial response was also significantly higher in patients with a low NLR and with progressive disease compared to those with a high NLR. The overall survival of patients with CRT and FP were both significantly worse in patients with a high NLR than in those with a low NLR. NLR may serve as a useful marker of the tumor response, immune suppression, malnutrition and prognosis upon CRT or FP in patients with locally advanced or metastatic ESCC.

Lynch syndrome, is an autosomal dominantly inherited disease that predisposes individuals to a high risk of colorectal cancers, and some mismatch-repair genes have been identified as causative genes. The purpose of this study was to investigate the genomic rearrangement of the gene in a family with Lynch syndrome followed for more than 45 years. The family with Lynch syndrome is family N, who received colorectal cancer treatment for 45 years. The proband of family N had multiple colorectal and uterine cancers. Because the proband met the diagnostic Amsterdam criteria and was Microsatellite instability (MSI) - positive, we performed genetic testing several times. However, germline mutations in MLH1 and MSH2 genes were not found by long-distance PCR or RT-PCR/direct sequencing analysis within the 45-year follow-up. MLPA analysis showed that the genomes of the proband and proband’s daughter contained a deletion from exon 4 through exon 19 in the MLH1 gene. Her son’s son and her daughter’s son were found to be carriers of the mutation. For carriers of mismatch-repair gene mutation among families with Lynch syndrome, the onset risk of associated cancers such as uterine cancer is particularly high, including colorectal cancer. The diagnosis of carriers among non-onset relatives is important for disease surveillance.

Background: Over 30% of the population of Okinawa Prefecture have a high body mass index. The incidence of hypertension and dyslipidaemia has also increased in recent years. We found that Ooitabi (Ficus pumila L.), a plant native to Okinawa, was useful for hypertension. During ancient times, the extracts of Ooitabi leaves were used for making Ishimaki tea in some areas of Okinawa Prefecture. The plants in Okinawa are rich in antioxidants, and four flavonoid glycosides, including rutin, have been identified in Ooitabi.Methods: In the present study, we conducted clinical verification tests on the effects of drinking Ishimaki tea on outpatients with hypertension and dyslipidaemia. Of 3814 Japanese patients who underwent medical check‐ups in Okinawa, 38 individuals with high blood pressure, dyslipidaemia, liver dysfunction and gout visited our hospital as outpatients and were asked to drink Ishimaki tea.Results: After 3 months, there were significant reductions in body mass index, systolic and diastolic blood pressure, total cholesterol, low‐density lipoprotein cholesterol, γ‐glutamyltrans peptidase, uric acid and ratio of blood vessel insulin resistance.Conclusions: Ooitabi extract can lower blood pressure and improve lipid abnormalities and has likely contributed to the well‐known health and longevity of the population in Okinawa.

Vascular endothelial growth factor (VEGF) reportedly plays an important role in the progression of malignant neoplasms. In the present study, measured serum concentrations of VEGF were measured in patients with ovarian cancer and correlations with nutritional damage and chronic inflammation were analyzed. A significant increase in serum levels in patients compared to healthy volunteers was observed. Levels of VEGF were inversely correlated with serum concentrations of prealbumin, transferrin and retinol‑binding protein. VEGF levels were also correlated with serum levels of c‑reactive protein (CRP), an effective marker of inflammation. CRP levels were significantly elevated in patients with stage III and IV disease and inversely correlated with serum concentrations of total protein, prealbumin, transferrin and retinol‑binding protein. These results demonstrated that an increased production of VEGF correlated with nutritional impairment and inflammation.