TASK DEFINITION: In this task, you are given a passage which has a question and the context. You have to generate an answer to the question based on the information present in the context.
PROBLEM: Context: Tetrahydrocurcumin (THC) is an active metabolite of curcumin. It has been reported to have similar pharmacological activity to curcumin. The proteases that participate in extracellular matrix (ECM) degradation are involved in cancer cell metastasis. The present study investigates the effect of an ultimate metabolite of curcumin, THC, on the invasion and motility of highly-metastatic HT1080 human fibrosarcoma cells.', 'The effect of THC on HT1080 cell invasion and migration was determined using Boyden chamber assay. Cell-adhesion assay was used for examining the binding of cells to ECM molecules. Zymography assay was used to analyze the effect of THC on matrix metalloproteinase (MMP)-2, MMP-9, and urokinase plasminogen activator (uPA) secretion from HT1080 cells. Tissue inhibitor of metalloproteinase (TIMP)-2 and membrane-type 1 matrix metalloproteinase (MT1-MMP) proteins levels were analyzed by Western blotting.', 'Treatment with THC reduced HT1080 cell invasion and migration in a dose-dependent manner. THC also decreased the cell adhesion to Matrigel and laminin-coated plates. Analysis by zymography demonstrated that treatment with THC reduced the levels of MMP-2, MMP-9, and uPA. THC also inhibited the levels of MT1-MMP and TIMP-2 proteins detected by Western blot analysis.\Question: Does tetrahydrocurcumin inhibit HT1080 cell migration and invasion via downregulation of MMPs and uPA?

SOLUTION: Our findings revealed that THC reduced HT1080 cell invasion and migration. The inhibition of cancer cell invasion is associated with the downregulation of ECM degradation enzymes and the inhibition of cell adhesion to ECM proteins.

PROBLEM: Context: Patients affected by chronic lymphocytic leukemia (CLL) have an increased risk of developing a second cancer. There is not a definitive explanation for this phenomenon, although some hypotheses have been postulated. The aim of the present work was to assess the presence of second cancer in untreated patients with CLL who were cytogenetically characterized, and secondly to investigate if there is a correlation between the genetics of CLL and the emergence of second cancer.', 'We performed conventional cytogenetics and Fluorescent in situ hybridization analyses in a series of 106 patients.', 'We observed that nearly 8% of cases developed second cancer, mostly epithelial tumors. The majority of them presented two common features, del(13)(q14.3) and the presence of at least two genetic alterations.\Question: Does genetics of lymphocytes influence the emergence of second cancer in chronic lymphocytic leukemia?

SOLUTION: We suggest that the genetic background of CLL, particularly the presence of several genetic alterations, influences the emergence of second cancer in patients affected by CLL.

PROBLEM: Context: We evaluated the adequacy of nutrient intake in comparison with the Indonesian Estimated Average Requirement (EARs) among pregnant Indonesian women and explain the short-term effect of economic crisis on nutrient intake and iron status.', 'Cross-sectional study.', 'Purworejo District, Central Java, located 60 km west of Yogyakarta Province, Indonesia.', 'During the period from 1996 to 1998, up to six 24 h recalls were performed during the second trimester of pregnancy among 450 women. Nutrient intake and iron status was evaluated in relation to date of data collection relative to the economic crisis that emerged in August 1997. A computer program (Inafood) was developed to calculate nutrient intake.', ': Forty percent of the pregnant women were at risk of inadequate intake of energy and protein, and 70% were at risk of inadequate intake of vitamin A, calcium and iron even before the crisis. Our results also demonstrate an effect of short-term economic crisis on nutrient intake and iron status. When the crisis emerged, urban poor experienced a decrease in intake of most nutrients. During the crisis, rich women experienced a significant decrease in fat (P<0.05). Negative changes in fat density during crisis were experienced by the rich and the rural, poor, and access to rice field subgroups (P<0.01). A significant increase in carbohydrate densities was seen for the rich and rural, poor, and access to rice fields groups (P<0.05). Urban poor experienced decreased serum ferritin concentration (P<0.05), whereas rich women experienced a significant increase (P<0.05).\Question: Are nutrient intake and iron status of urban poor and rural poor without access to rice fields affected by the emerging economic crisis : the case of pregnant Indonesian women?

SOLUTION:
Urban poor and rural poor landless women were most directly affected by the emerging economic crisis.