Design and evaluation of scFv-RTX-A as a novel immunotoxin for breast cancer treatment: an in silico approach.

Human epidermal growth factor receptor 2 (HER2) is overexpressed in breast cancer (BC) patients. Hence, immunotherapy is a proper treatment option for HER2-positive BC patients. Accumulating evidence has indicated that immunotoxin therapy is a novel approach to improve the potency of targeted therapy. Immunotoxins are antibodies or antibody fragments coupled with a toxin. We designed an immunotoxin. The physicochemical properties were evaluated using ProtParam servers and secondary structure was examined by PROSO II and GORV. Using I-TASSER, a 3D model was built and refined by GalaxyRefine. The model was validated using PROCHECK and RAMPAGE. To predict immunotoxin allergenicity and mRNA stability, AlgPred server and RNAfold were used. Furthermore, the immunotoxin and HER2 were docked by ZDOCK. The scFv+RTX-A could be a non-allergenic and stable chimeric protein, and the secondary structure of its components did not alter, and this protein had a proper 3D structure that might have stable mRNA structure which could bind to HER2. Given the fact that the designed immunotoxin was a non-allergenic and stable chimeric protein and that it could bind with high affinity to HER2 receptors, we proposed that this chimeric protein could be a useful candidate for HER-2 positive BC patients.

Evaluation of depression, stress, and anxiety among women with subfertility during the COVID-19 pandemic: A cross-sectional study in Ahvaz, Iran.

Background and Aims: Some studies have shown that the levels of stress, anxiety, and depression have increased among subfertile women during the COVID-19 pandemic. This study was designed to evaluate the levels of depression, anxiety, and stress among subfertile women during the COVID-19 pandemic in southwest Iran. Method: This cross-sectional study was conducted on 190 subfertile women from two infertility centers (Imam Khomeini and Jihad) in Ahvaz, Iran. A demographic questionnaire, and the depression, anxiety, stress scale (DASS-21) were used to assess the level of depression, anxiety, and stress of subfertile women during the COVID-19 pandemic. Data collection started in August 2021 and was completed in December 2021. Mean ± SD or N (%), and multiple linear regression were used to analyze the data. Result: Results showed that most women experienced moderate depression, anxiety, and stress. However, the percentage of women who experienced very severe anxiety was more than that for depression and stress, and 75 (39.5%) of women had all three disorders together. Anxiety was 0.176 units lower in women who were not affected by COVID-19 (95% CI: -5.781 to -0.629). The depression was 0.216 units lower in women with good and moderate economic status (95% CI: -5.603 to -1.178). Conclusion: The results of this study showed that most studied women experienced moderate depression, anxiety, and stress, but the percentages of very severe anxiety were more than that for depression and stress. Poor economic status was also a strong predictor of depression among subfertile women. Infection with COVID-19 increased the level of anxiety. Careful evaluation of subfertile women for mental health is recommended especially during crises such as the COVID-19 pandemic.

Comparison of the calcium-related factors in Parkinson's disease patients with healthy individuals.

BACKGROUND: Parkinson's disease (PD) is one of the most common neurodegenerative diseases (ND). Studies have demonstrated that biochemical markers have an association with PD. We aimed to investigate an association of biochemical markers including calcium, vitamin D, alkaline phosphatase (ALP), parathormone (PTH), and phosphorous with PD. METHODS: This study was conducted on 139 PD patients and 100 healthy individuals. Serum levels of calcium, phosphorous, ALP, PTH and vitamin D were evaluated. Furthermore, student's t-test and logistic regression models were used by SPSS. RESULTS: The mean levels of calcium (9.4±0.7 and 9.0±0.8 ) and vitamin D (29.7±22.1 and 25.8±23.7) were higher in PD patients as compared with healthy controls, which only status of calcium being significantly different in the two groups (P<0.001). Levels of ALP (202.4±96.7 and 242.9±142.4) and phosphorous (3.6±0.6 and 4.22±1.1) were significantly different comparing PD patients with healthy subjects (P<0.01, P<0.001, respectively). ALP and phosphorous were significantly different in the two groups (OR=0.996, [CI 95%, 0.994-0.999], P<0.001, OR=0.475, [CI 95%, 0.325-0.694], P<0.001, respectively). Furthermore, increased levels of calcium resulted in an elevated risk of PD (OR=2.175, [CI 95% 1.377-3.435], P<0.001). CONCLUSION: Results show that mean levels of calcium are higher in PD patients relative to healthy controls. Thereby, higher levels of calcium may be associated with PD.