Heat stress adversely affects plant growth and development, while glycinebetaine (GB) plays a protective role under stressful conditions. The objective of this study was to assess the optimum level of GB for use as a presowing seed treatment and the subsequent effect on the heat tolerance of barley (Hordeum vulgare L. cv. Haider-93) seedlings. Among a range of GB levels, the 20 mM concentration emerged as the most effective in enhancing seed germination, shoot fresh and dry weight and shoot water content under heat stress, and this level was selected for further studies. Time course changes revealed that the seedlings developing from 20 mM GB treated seeds had greater shoot dry weight, net photosynthetic rate (P N ), leaf water potential (w w ) and reduced relative membrane permeability (RMP), compared to no-GB treated plants under heat stress. Correlations between dry weight and high P N (r = 0.881), low w w (r = À0.938) and RMP (r = À0.860) of shoots suggested the involvement of GB in heat stress tolerance. Leakage of Ca 2+ and NO 3 À was the greatest followed by K + and PO 4 3À under no-GB seed treatment, and GB application under heat stress appreciably reduced the leakage of all these ions, particularly Ca 2+ , K + and NO 3 À . In conclusion GB absorbed by seeds, after translocation to the seedlings, enhanced their capacity to maintain greater water content, and higher seedling vigor by virtue of increased P N , reduced RMP and leakage of important ions under heat stress. These results have implications for final field stand under the conditions where the ambient temperature is supra-optimal for barley growth.

BackgroundHuman Epidermal Growth Factor (Her-2/neu) has strong therapeutic implications in certain cancers like breast and gastric cancer. Literature on its frequency in colorectal cancer is scarce. In this study, we have investigated the frequency of Her-2/neu expression in colorectal adenocarcinomas and its association with various clinicopathological variables.MethodsA total of 95 patients who underwent colonoscopic biopsy or colectomy were studied after Institutional Ethical Approval. Hematoxylin & eosin (H&E) staining was performed on all the tissue sections. Expression of Her-2/neu was investigated by immunohistochemistry using α-Her-2 antibody. In order to quantify Her-2/neu expression, three criterias were applied that includes the pattern of staining, intensity of staining and percentage of tumor cells stained. Furthermore, its association was seen with various clinicopathological variables including age, gender, histopathological type, grade and stage of the tumor. Data was entered and analyzed using SPSS version 21. A p-value of < 0.05 was considered as significant.ResultsFrom the total of 95 cases, 75 (78.9 %) cases showed Her-2/neu expression. Pattern of Her-2/neu staining was significantly associated with the grade of colorectal cancer depicting cytoplasmic Her-2/neu expression higher in low grade (50 %) while membranous Her-2/neu expression more in high grade colorectal cancer (45 %) (P-value = 0.030). Pattern of Her-2/neu staining was also significantly associated with the type of colorectal cancer representing membranous Her-2/neu expression to be more common in mucinous type (38.5 %) while cytoplasmic Her-2/neu expression to be more frequent in non mucinous type (42.7 %) of colorectal cancer (p-value = 0.024).We observed a significant association between percentage of cells stained & tumor type, with score 3+ maximum in non mucinous type of colorectal cancer (p-value = 0.006).ConclusionHer2/neu is considerably expressed in colorectal adenocarcinoma in Pakistani population. Our findings indicate a significant strong association of cytoplasmic Her-2/neu expression with low grades and membranous Her-2/neu expression with high grades of colorectal cancer. These findings add to the body of information & may help in conducting clinical trials in future to explore its therapeutic significance as well.

Objectives: The aim of the study was to assess the knowledge of community pharmacies about recommended methods of drug disposal and hazardous effects of improper disposal of pharmaceutical waste and to determine the attitude as well as practice of community pharmacies about the proper disposal of pharmaceutical waste. Methods: A cross-sectional study was performed with 139 community pharmacies in Karachi, Pakistan by using non-probability convenient sampling technique. Predesigned structured questionnaire was distributed to different community pharmacies in Karachi and filled questionnaires were collected after one day. Data was analyzed using SPSS 22.0 Results: About 65 (46.8%) of the participants reported to have a system for regularly removing the expired or unused drugs by returning them to contractors/distributors. More than half 86 (61.9%) of the participants disposed of solid, liquid, semi-solid, controlled, and p-listed drugs in the rubbish bin. Approximately half of the participants believed that standard method for disposal of solid, liquid, semi-solid, controlled, and p-listed drugs is by flushing them down the toilet/sink. Conclusion: Our study showed that knowledge and practices of community pharmacies regarding disposal of unused and expired medicines were not satisfactory. However, most of the participants were well aware of the harmful effects caused by improper disposal of pharmaceutical waste on environment and showed positive attitude towards learning safe methods of management and disposal of unused and expired drugs.

Objectives: To present 7 years data mentioning the spectrum of preneoplastic & neoplastic cases of intestine received at Dow Diagnostic Research and Reference Laboratory. Methods: All the cases of preneoplastic & neoplastic lesions of intestine received during 2009 – 2015 were reviewed. The data obtained were subjected to descriptive statistical analysis using SPSS version 22. Furthermore, the association of diagnosis was seen with various other variables including age, gender & site of the lesion. A p-value of < 0.05 was considered as significant. Results: The total samples were 486, out of which 33 cases were of premalignant and 453 were of malignant lesions. Out of total 33 cases of premalignant lesions of intestine, it consisted adenomatous polyp = 39.4% (n=13), dysplasia = 36.4% (n=12) and adenoma = 24.2% (n=8). From the total of 453 cases diagnosed as malignant lesions; adenocarcinoma as Grade-I were 14.2% (n=64), Grade-II were 7.6% (n=260) and Grade-III were 22% (n=99). Squamous cell carcinoma Grade-I were 0.4% (n=2), Grade-II 1.6% (n=7) and Grade-III 0.9% (n=4). 2.4% (n=11) cases were of metastatic adoncarcinoma, 0.9% (n=4) were diagnosed as neuroendocrine tumors and 0.4% (n=2) as lymphoma. A significant association was seen between site of the tumor and diagnosis, rectum was the commonest site for adenocarcinomas (p=0.001). Moderately differentiated adenocarcinoma was predominantly present in young age (p=0.001). Conclusion: Colorectal carcinoma is on rise in Pakistan, predominantly in young males, and rectum being the commonest site. In our study, all the lesions showed male predominance with adenomatous polyp as the commonest premalignant lesion & Grade-II adenocarcinoma the most common malignancy of intestine. doi: https://doi.org/10.12669/pjms.36.2.687 How to cite this:Shabbir A, Qureshi MA, Akram S, Mirza T. Spectrum of preneoplastic and Neoplastic lesions of intestine in a tertiary care hospital of Karachi, Pakistan. Pak J Med Sci. 2020;36(2):---------. doi: https://doi.org/10.12669/pjms.36.2.687 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Background: Human Epidermal Growth Factor (Her-2/neu) has strong therapeutic implications in certain cancers like breast and gastric cancer. Literature on its frequency in colorectal cancer is scarce. In this study, we have investigated the frequency of Her-2/neu expression in colorectal adenocarcinomas and its association with various clinicopathological variables. Methods: A total of 95 patients who underwent colonoscopic biopsy or colectomy were studied after Institutional Ethical Approval. Hematoxylin & eosin (H&E) staining was performed on all the tissue sections. Expression of Her-2/ neu was investigated by immunohistochemistry using α-Her-2 antibody. In order to quantify Her-2/neu expression, three criterias were applied that includes the pattern of staining, intensity of staining and percentage of tumor cells stained. Furthermore, its association was seen with various clinicopathological variables including age, gender, histopathological type, grade and stage of the tumor. Data was entered and analyzed using SPSS version 21. A pvalue of < 0.05 was considered as significant. Results: From the total of 95 cases, 75 (78.9 %) cases showed Her-2/neu expression. Pattern of Her-2/neu staining was significantly associated with the grade of colorectal cancer depicting cytoplasmic Her-2/neu expression higher in low grade (50 %) while membranous Her-2/neu expression more in high grade colorectal cancer (45 %) (P-value = 0.030). Pattern of Her-2/neu staining was also significantly associated with the type of colorectal cancer representing membranous Her-2/neu expression to be more common in mucinous type (38.5 %) while cytoplasmic Her-2/neu expression to be more frequent in non mucinous type (42.7 %) of colorectal cancer (p-value = 0.024). We observed a significant association between percentage of cells stained & tumor type, with score 3+ maximum in non mucinous type of colorectal cancer (p-value = 0.006). Conclusion: Her2/neu is considerably expressed in colorectal adenocarcinoma in Pakistani population. Our findings indicate a significant strong association of cytoplasmic Her-2/neu expression with low grades and membranous Her-2/ neu expression with high grades of colorectal cancer. These findings add to the body of information & may help in conducting clinical trials in future to explore its therapeutic significance as well.