ABSTRACT
BACKGROUND: Breast cancer is the most commonly diagnosed cancer causing death among females worldwide. Radiotherapy after lumpectomy/mastectomy in breast cancer cases is a successful treatment modality taking five weeks to complete. The aim of the present study is to compare the effectiveness of hypo-fractionated radiotherapy in breast cancer patients with conventional radiotherapy with respect to outcome and toxicity. METHODS: Sixty patients were randomly divided equally into a conventional group, Group A (dose: 50 Gy in 25 fractions), and a hypo-fractionated short-course radiotherapy group, Group B (dose: 40 Gy in 16 fractions). After thorough clinical and laboratory examination of all patients, the disease status was assessed prior to radiotherapy and three and six months after completion of radiotherapy. The cardiopulmonary function was assessed using echocardiography and pulmonary function tests prior to the procedure. The assessment of the development of toxicity (dysphagia, skin, lung, and lymphedema) was done during every clinical visit. RESULTS: The mean age of patients was 53.28 ± 9.73 years in Group A, and 55.67 ± 10.41 years in Group B (p=0.82). The right breast was involved in 13 (43.4%) patients in Group A and 14 (46.6%) in Group B, and the left breast was involved n 17 (56.6%) patients in Group A and 16 (53.4%) in Group B (p=0.81). Most of the patients were post-menopausal; 24 (80%) in Group A and 25 (83.4%) in Group B (p=0.91). Eleven (36.6%) patients were of stage T2N1M0 in both groups. However, no statistical difference was observed between the groups in the TNM (tumor, node, and metastasis) staging using the AJCC (American Joint Committee on Cancer) criteria (p=0.26). On comparing the responses in Group A and Group B, no significant difference was observed in either of the groups from immediate post-treatment to the 12-month follow-up period (p=0.53 and p=0.64, respectively). CONCLUSION: Hypo-fractionated radiotherapy is as effective as conventional radiotherapy and can be used as an alternative method for treatment following breast cancer surgery.
ABSTRACT
BACKGROUND: The treatment of locally advanced head and neck carcinoma has been a combination of chemotherapy and radiation. The higher incidences of recurrence and metastasis warrant the search for an alternative therapy for better patient outcomes. This study was designed to evaluate the effect of gefitinib in conjunction with concurrent chemoradiation in locally advanced stages III and IV head and neck cancer. METHODOLOGY: The patients were equally divided into two groups: Group I received cisplatin 100 mg/m2 on the first, 22nd, and 43rd days together with the radiation, whereas Group II was given the same treatment as Group I together with oral doses of gefitinib 250 mg on a daily basis, starting two weeks prior to radiotherapy and continuing until the completion of it. The dose of radiotherapy was 2 Gray (Gy) per fraction given over a period of five days per week to a maximum of 70 Gy in locally higher grades of head and neck neoplasms. The evaluation was performed in accordance with the RECIST (Response Evaluation Criteria in Solid Tumors) criteria, which include stable disease (SD), progressing disease (PD), partial response (PR), and complete response (CR). Salvage chemotherapy, potential surgical intervention, or palliative care was presented to patients with remaining or recurring diseases. The grading of the patients for acute and chronic radiation morbidity was done according to the Radiation Therapy Oncology Group (RTOG) criteria for toxicity during radiation treatment and at each subsequent follow-up. Parameters such as site, nodal involvement, stage, tumor status, and Eastern Cooperative Oncology Group (ECOG) were recorded. RESULTS: On comparing the patient characteristics, no statistical significance was observed. The overall response was seen in 24 (80%) and 28 (83.33%) patients in Group I and Group II, respectively (p = 0.08). All patients in Group I and Group II reported xerostomia as an acute/chronic adverse event of chemotherapy. Similarly, mucositis, dysphagia, and diarrhea were observed in all the patients, and no statistical difference was observed. Seventeen (56.67%) patients in Group II had complaints of skin rashes, while four (13.33%) patients in Group I had similar complaints (p = 0.01). CONCLUSION: The study concludes that encouraging results were observed in comparing overall response after the addition of oral gefitinib to the traditional treatment of locally advanced head and neck neoplasms.
ABSTRACT
Peste des Petits Ruminant (PPR) is an important transboundary, OIE-listed contagious viral disease of primarily sheep and goats caused by the PPR virus (PPRV), which belongs to the genus Morbillivirus of the family Paramyxoviridae. The mortality rate is 90-100%, and the morbidity rate may reach up to 100%. PPR is considered economically important as it decreases the production and productivity of livestock. In many endemic poor countries, it has remained an obstacle to the development of sustainable agriculture. Hence, proper control measures have become a necessity to prevent its rapid spread across the world. For this, detailed information on the pathogenesis of the virus and the virus host interaction through cellular receptors needs to be understood clearly. Presently, two cellular receptors; signaling lymphocyte activation molecule (SLAM) and Nectin-4 are known for PPRV. However, extensive information on virus interactions with these receptors and their impact on host immune response is still required. Hence, a thorough understanding of PPRV receptors and the mechanism involved in the induction of immunosuppression is crucial for controlling PPR. In this review, we discuss PPRV cellular receptors, viral host interaction with cellular receptors, and immunosuppression induced by the virus with reference to other Morbilliviruses.
