• Natural Product Sciences
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• 제4권2호
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• pp.62-67
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• 1998

As a part of search for new biologically active constituents from aloe, we have isolated a glycopeptide, called G1G1M1DI2, from the gel(G1) of Aloe vera. Chemical and spectroscopic evidence indicated that G1G1M1DI2 is a glycopeptide. The molecular weight of G1G1M1DI2 was about 5,500 daltons, and the carbohydrate and protein contents were 20.9% and 32.6%, respectively. Periodate oxidation and enzymic degradation gave peptide moiety and carbohydrate moiety, respectively. Carbohydrate moiety is composed of fucose, galactose, glucose and mannose in a molar ratio of 0.5:2.4;48.8:48.3. Peptide moiety is composed of fifteen amino acids, and glutamic acid and glycine were the major componants. The glycopeptide, G1G1M1DI2, stimulated thymidine uptake of SCC 13 cells about 6.5 times the control. This result suggests that this glycopeptide has a skin cell proliferating activity.

• Asian Pacific Journal of Cancer Prevention
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• 제17권6호
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• pp.2781-2785
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• 2016

Background: Matric metalloproteinase (MMP) 13 gene expression is increased in esophageal squamous cell carcinomas (ESCCs) and associated with increasing tumor invasion, lymph node involvement and decreased survival rates. Levels of the circulating enzyme may be elevated and used as a marker of tumor progression. In this study, clinical application of MMP-13 serum levels was evaluated for early detection, prediction of prognosis and survival time of ESCC patients. Materials and Methods: Serum levels of MMP13 were determined by ELISA in 66 ESCC patients prior of any treatment and 54 healthy controls for comparison with clinicopathological data through statistical analysis with Man Whitney U and Log-Rank tests. In addition, clinical value of MMP13 levels for diagnosis was evaluated by receiver operating characteristic (ROC) test. Results: The serum level of MMP-13 in patients (>250 pg/ml) was significantly higher than in the control group (<100 pg/ml) (p value=0.004). Also the results showed a significant correlation between MMP-13 serum levels with tumor stage (p value = 0.003), depth of tumor invasion (p value=0.008), involvement of lymph nodes (p value = 0.011), tumor size (p value = 0.018) and survival time. While there were no significant correlation with grade and location of tumors. ROC analysis showed that MMP-13 level is an accurate diagnostic marker especially to differentiate pre-invasive/ invasive lesions from normal controls (sensitivity and specificity: 100%). Conclusions: These findings indicate a potential clinical significance of serum MMP13 measurement for early detection and prognostic assessment in ESCC patients.

• Asian Pacific Journal of Cancer Prevention
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• 제14권1호
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• pp.15-20
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• 2013

Urinary bladder squamous cell carcinoma (SCC), one of the most common neoplasms in Egypt, is attributed to chronic urinary infection with Schistosoma haematobium (Schistosomiasis). The proto-oncogene c-KIT, encoding a tyrosine kinase receptor and implicated in the development of a number of human malignancies, has not been studied so far in schistosomal urinary bladder SCCs. We therefore determined immunohistochemical (IHC) expression of c-KIT in paraffin sections from 120 radical cystectomies of SCCs originally obtained from the Pathology Department of Suez Canal University (Ismailia, Egypt). Each slide was evaluated for staining intensity where the staining extent of >10% of cells was considered positive. c-KIT overexpression was detected in 78.3% (94/120) of the patients, the staining extents in the tumor cells were 11-50% and >50% in 40 (42.6%) and 54 (57.4%) respectively. The positive cases had 14.9%, 63.8%, 21.3% as weak, moderate and strong intensity respectively. Patients with positive bilharzial ova had significantly higher c-KIT expression than patients without (95.2% vs. 38.9%, P=0.000). Mutation analysis of exons 9-13 was negative in thirty KIT positive cases. The high rate of positivity in SBSCC was one of the striking findings; However, CD117 may be a potential target for site specific immunotherapy to improve the outcome of this tumor.

• Asian Pacific Journal of Cancer Prevention
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• 제15권14호
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• pp.5861-5865
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• 2014

High risk forms of the human papilloma virus (HPV) are generally accepted as necessary causative agents for cervical cancer. Recently, a possible relation between HPV and oral squamous cell carcinoma (OSCC) has also been noticed. The present study was conducted to investigate the prevalence of HPV infection in OSCCs in Wuhan city. DNA samples were collected from fresh tissues in 200 patients with OSCC and 68 normal controls. The polymerase chain reaction and direct sequencing were used to identify the HPV types in the samples. The prevalence of HPV of all types in the OSCC group was higher than in the control group (55/200 vs 2/68, OR=11.5, 95% CI=2.6-50.2). HPV16 and HPV18 were the main types detected, with HPV6 was the only low-risk type identified. High-risk HPV types HPV16 and HPV18 are prevalent in OSCC patients and may participate in the development of OSCC with traditional risk factors, tobacco and alcohol, possibly exerting synergistic effects. The results of multinomial logistic regression showed that those who smoked, consumed alcohol and with HPV infection have the highest risk of developing oral cancer (OR=13.3, 95% CI=3.1-56.8). Adjusted for age, smoking and alcohol use, HPV infection was independently associated with oral squamous cell carcinoma.

• Asian Pacific Journal of Cancer Prevention
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• 제15권14호
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• pp.5889-5893
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• 2014

Over-expression of epidermal growth factor receptor (EGFR) has been identified as a common feature associated with clinical outcome in many types of cancer, including squamous cell carcinoma of the oesophagus (SCCO). However, the clinical importance of EGFR over-expression in SCCO remains unsettled as conflicting results exist. Therefore we carried out the present meta-analysis of published studies for clarification. A total of 13 studies including 1, 150 patients were enrolled. EGFR over-expression was positive in 722 of these cases. With EGFR over-expression, patients had higher depth of invasion, vascular invasion, and poor prognosis. However, expression had no relation with degree of differentiation, histological grade, lymph node metastasis, clinical stage or lymphatic invasion. EGFR over-expression is probably a valuable predictor for the T stage, vascular invasion and OS, and it could be used as a poor prognosis indicator for the esophageal SCC patients. Targeting therapy to EFGR should be considered to the combined treatment in SCCO.

• Asian Pacific Journal of Cancer Prevention
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• 제13권12호
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• pp.6239-6244
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• 2012

Background: The basal cell carcinoma (BCC) is the most common non-melanoma skin cancer (NMSK). BCC might develop because of the faulty cell cycle arrest. $p15^{INK4b}$ is a tumor suppressor gene, involved in cell cycle arrest and inactivated in most human cancers. The role of $p15^{INK4b}$ protein expression in the genesis of BCC is as yet unknown. In a previous study we showed the absence of $p15^{INK4b}$ expression in the majority of tissue microarray cores of cutaneous squamous cell carcinoma (SCCs), another type of non-melanoma skin cancer, indicating that $p15^{INK4b}$ could possibly be involved in the pathogenesis of cutaneous SCC. The aim of this study was to investigate $p15^{INK4b}$ protein expression in BCCs. Materials and Method: Protein expression of $p15^{INK4b}$ in 35 cases of BCC tissue arrays and 19 cases of normal human skin tissue was studied using an immunohistochemical approach. Results: The expression of $p15^{INK4b}$ was not significantly different in the BCC cases as compared with normal human skin (p=0.356; p>0.05). In addition, there were no significant relationship between clinicopathologic variables of patients (age and sex) and $p15^{INK4b}$ protein expression. Conclusions: Our finding may indicate that $p15^{INK4b}$ protein expression does not play a role in the genesis of BCC.

• Asian Pacific Journal of Cancer Prevention
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• 제13권2호
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• pp.585-589
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• 2012

Background: Israeli Arabs are considered as a developing society characterized by poverty and high levels of smoking among men. The purpose of this study was to describe their incidence, mortality and survival rates for oral and pharyngeal cancer between the years 1970-2006. Studies such as this in the Arab world, where the population is almost the same as the Arab population in Israel, are rare. Methods: The incidence and survival data were derived from all relevant registered data at the National Cancer Registry. The group of lesions included cancer of the lips, tongue, buccal mucosa, floor of the mouth, salivary glands, gums, palate and pharynx. Morphological description was according to WHO classification. Results: Most diagnosed patients were male. The mean age was 54.4 years, and mean years of survival were 3.83. The oropharynx was the most common site (28.3%) while the palate was the least frequent (3.12%). Squamous cell carcinoma (SCC) was the most common histological feature (66.3%), while basal cell carcinoma (BCC) was the least (3.9%). The overall 5 years survival rate was 59.4%, this being highest for BCC (82.1%), while SCC was significantly lower (56.2%) (p<0.001). Lip cancers survived better than other sites. Conclusions: Data from this society are similar to other developing societies in the majority of the results. The incidence of oral and pharyngeal cancer is lower among the Arab population, in comparison to the Jewish population in Israel.

• Asian Pacific Journal of Cancer Prevention
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• 제13권8호
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• pp.3949-3953
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• 2012

Head and neck cancers are amongst the commonest malignancies, accounting for approximately 20% of the cancer burden in India. The major risk factors are tobacco chewing, smoking and alcohol consumption, which are all preventable. This retrospective study presents data from the histopathology register for a five year period from 2002-2006 at Patna Medical College and Hospital, a tertiary care hospital drawing patients from the entire Bihar state, the 3rd most populous state of India with the majority of the population residing in rural areas. Incidence rates based on sex, age, site of lesion, including age standardized incidence rates for males and females, with mean age of presentation, distribution of histological variants and year wise trend were calculated. Out of 455 head and neck neoplasias, 241 were benign while 214 were malignant. The most common age group for all malignant biopsies was 7th decade for males and the 5th decade for females. Malignant cases were commoner in males than females with the male:female ratio of 3.1:1, which was found to be statistically significant by the chi-square (${\chi}^2$) test. The crude rate and age standardized incidence rate was 0.05 and 0.06 per 100,000 population respectively. Squamous cell carcinoma (SCC) contributed about 96% of all cases, with grade I being the most common. Larynx was the most common site for malignancy, the supraglottic region being its most commonly affected sub-site. This observed incidence patterns in the region are a reminder of widespread unawareness, low healthcare utilization with virtually non-existent cancer programs. It also underlines the need to advocate for reliable cost-effective programs to create awareness, for early detection and plan appropriate management strategies. There is a compelling demand for a cancer registry in this region as well as proper implementation of preventive measures to combat this growing threat of cancer, many of whose risk factors are preventable.

• Asian Pacific Journal of Cancer Prevention
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• 제16권6호
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• pp.2303-2306
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• 2015

Objective: Skin tumors are the most commonly seen cancer type worldwide. Regarding pathogenesis, it is thought that disruption of kinetics through T lymphocyte-mediated development of chronic inflammation may be involved. The present study was intended to identify role of inflammatory cells such as neutrophils, monocytes and lymphocytes in the determination of risk for skin cancer. Materials and Methods: We retrospectively reviewed charts of 569 cases diagnosed as having primary skin tumors. Data regarding age, gender and histopathological subtype were recorded. Blood parameters studied on the day before surgery including WBCs, neutrophils, and lymphocyte counts, neutrophil:lymphocyte and neutrophil:monocyte ratios were also recorded. Two-hundred and two healthy individuals presented for check-up in an outpatient clinic were selected as the control group. Parameters studied in cases with skin cancer were compared to those healthy individuals. Findings: Of the cases with skin cancer, 401 were basal cell carcinoma (BCC) while 144 were squamous cell carcinoma (SCC) and 13 were malignant melanoma (MM). WBC, neutrophil and monocyte counts and the neutrophil:lymphocyte ratio were found to be lower in the patient group than in the healthy control group (p<0.001) while no significant difference was found in other parameters reviewed (p>0.05). No significant difference was found in WBC, neutrophil, neutrophil: monocyte ratio according to gender (p>0.05). Monocyte count was found to be $0.68{\pm}0.61$ in men and $0.55{\pm}0.25$ in women, indicating strong statistical significance (p<0.001). WBC, neutrophil and monocyte values were highest in control group while lowest in BCC. When BCC and SCC groups were compared to controls, significant differences found (p<0.001). There were no significant differences in lymphocyte counts among groups (p=0.976). Neutrophil:lymphocyte ratios were 3.24 in BCC, 3.59 in SCC, 3.44 in MM and 5.06 in control group (p<0.001). Conclusions: In our study, it was found that there were significant differences in complete blood count, neutrophil, monocyte and neutrophil:lymphocyte levels among groups. Neutrophil: lymphocyte ratio was found to be lowest in BCC among skin cancers.

• 대한두경부종양학회지
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• 제25권1호
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• pp.3-7
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• 2009

Background and Objectives : Panax ginseng C.A. Meyer is a medical plant that has been widely utilized as a tonic and nutritional agent since ancient times in Korea. Ginseng has anti-metastatic property of cancer and immunomodulating activity. The novel acidic polysaccharide compound(MB40) was isolated from the leaves of Panax ginseng C.A. Meyer. To determine immunomodulating activities of MB40, we evaluate anti-cancer and anti-metastatic effects of MB40 in tumor bearing immune competent mice. Material and Methods : C3H mice were divided into three equal groups(Cisplatin treatment group, MB40 treat-ment group, Cisplatin and MB40 treatment group) and were transplanted SCC(Squamous Cell Carcinoma) cells(2${\times}$106) to the lateral side of abdomen. From day 4 after transplantation, MB40 was administrated at dose of 10mg/kg, respectively, every other day by intratumoral injection. Cisplatin was systemically administrated at doses of 1mg/kg, respectively, every week by intraperitoneal injection. Results : 5 days after administration, tumors can be palpated in every mice group. After 13 days of administration, the mice group to which MB40 were administrated exhibited reduction in tumor size respectively, compared to cisplatin group. Overall status of mice such as body weight and activity were superior in MB40 group than cisplatin group. Conclusion : The result of this study indicates MB40 may have significant therapeutic effect and decreases complications induced by systemic chemotheraphy. MB40 may be developed as a novel and potent immunotropics to improve the cell immune system and anti-cancer drug for the treatment of cancer patients in head and neck squamous cell carcinoma.