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1.
Front Oncol ; 14: 1380349, 2024.
Article in English | MEDLINE | ID: mdl-38807767

ABSTRACT

Objective: Genetic testing and counselling are critical in assessing breast cancer risk and tailoring treatment strategies. However, several barriers hinder patients from opting for genetic testing/counselling, leading to fewer than one-third of patients undergoing testing and even fewer being offered counselling. A granular understanding of these barriers is essential in overcoming them. Methods: A multinational survey developed by patient authors was conducted in 9 countries, to identify the specific local/regional barriers. The survey question pathway was individualized, based on responses to prior questions. Percentage responses to a response option were calculated based on the total number of respondents to that question. Chi-square tests were used to assess the significance of the results, if applicable. Results: The final analysis set (FAS) included 1,176 respondents, with a subset of this responding to all questions. In the FAS, 63% of respondents had undergone testing. Among those who got tested, 70% were offered testing. Among untested respondents, only 40% were offered the test but eventually did not get tested. In the tested population, 44% received counselling, which was significantly higher than 7% (p<0.00001) in the untested group. Among those reporting on awareness, 71% reported awareness level between 'very low' and 'moderate' prior to cancer diagnosis. Most respondents (71%) agreed that all breast cancer patients should undergo testing before treatment initiation. However, Asian patients were less likely to endorse this view compared to respondents from other regions (25% vs ≥50%; p<0.00001). A higher proportion of tested respondents were 'very willing' to get their family members tested (44%) versus untested respondents (11%), with relatively higher willingness among Australian (77%) and Russian respondents (56%), the regional variation being statistically significant (p<0.00001). Conclusions: Critical gaps remain in the access, awareness and perceived value of genetic testing and counselling, with regional variance or difference between the tested and untested groups. Most patients are not offered counselling, which may be associated with the low uptake of testing. Strategic action is needed to drive policy-shaping and improve access to testing and counselling, including raising patient awareness and improving patient experience for better treatment outcomes.

2.
JCO Glob Oncol ; 9: e2300111, 2023 08.
Article in English | MEDLINE | ID: mdl-37561978

ABSTRACT

PURPOSE: The post-COVID-19 funding landscape for cancer research globally has become increasingly challenging, particularly in resource-challenged regions (RCRs) lacking strong research ecosystems. We aimed to produce a list of priority areas for cancer research in countries with limited resources, informed by researchers and patients. METHODS: Cancer experts in lower-resource health care systems (as defined by the World Bank as low- and middle-income countries; N = 151) were contacted to participate in a modified consensus-seeking Delphi survey, comprising two rounds. In round 1, participants (n = 69) rated predetermined areas of potential research priority (ARPs) for importance and suggested missing ARPs. In round 2, the same participants (n = 49) rated an integrated list of predetermined and suggested ARPs from round 1, then undertook a forced choice priority ranking exercise. Composite voting scores (T-scores) were used to rank the ARPs. Importance ratings were summarized descriptively. Findings were discussed with international patient advocacy organization representatives. RESULTS: The top ARP was research into strategies adapting guidelines or treatment strategies in line with available resources (particularly systemic therapy) (T = 83). Others included cancer registries (T = 62); prevention (T = 52); end-of-life care (T = 53); and value-based and affordable care (T = 51). The top COVID-19/cancer ARP was strategies to incorporate what has been learned during the pandemic that can be maintained posteriorly (T = 36). Others included treatment schedule interruption (T = 24); cost-effective reduction of COVID-19 morbidity/mortality (T = 19); and pandemic preparedness (T = 18). CONCLUSION: Areas of strategic priority favored by cancer researchers in RCRs are related to adaptive treatment guidelines; sustainable implementation of cancer registries; prevention strategies; value-based and affordable cancer care; investments in research capacity building; epidemiologic work on local risk factors for cancer; and combatting inequities of prevention and care access.


Subject(s)
COVID-19 , Neoplasms , Humans , COVID-19/epidemiology , COVID-19/prevention & control , Consensus , Delphi Technique , Developing Countries , Ecosystem , Neoplasms/therapy , Research
3.
Diagnostics (Basel) ; 13(2)2023 Jan 09.
Article in English | MEDLINE | ID: mdl-36673050

ABSTRACT

Background: Needs assessment tools may be used to guide the optimisation of cancer survivorship services. We sought to develop and validate a dual-language needs assessment tool for women with breast cancer. Methods: The study comprised two phases; (I) co-design, and (II) psychometric testing. In Phase I, items were generated based on focus group discussions with patients and a literature review. These items were then translated into the Malay language. Content and face validation were undertaken with an expert panel. In phase II, 315 Malaysian women living with breast cancer were recruited. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted to determine construct validity and reliability. Criterion validity was assessed using the EORTC QLQ-C30 questionnaire. Results: We co-designed and validated a 48-item dual-language needs assessment tool for breast cancer (NeAT-BC). Five underlying constructs were revealed in the EFA: (1) emotional support, (2) social and intimate relationships, (3) hospital appointments, (4) personal care and health, and (5) information and services. The NeAT-BC demonstrated good reliability across all constructs (Cronbach's alpha: 0.90 to 0.96). CFA also demonstrated acceptable convergent and divergent validity, composite reliability ≥ 0.87, and Heterotrait−Monotrait index < 0.85 for all constructs. Criterion validity was established given the significant negative correlation between overall needs and quality of life (r = −0.14; p = 0.02). The NeAT-BC took approximately 25 min to be completed and could be interviewer-administered or self-administered. Conclusion: The utilization of the NeAT-BC is expected to guide establishment of evidence-based cancer survivorship services in Malaysia, with wider potentials for adoption in other multi-ethnic and/or low-and-middle income settings.

4.
Sci Rep ; 12(1): 21389, 2022 Dec 10.
Article in English | MEDLINE | ID: mdl-36496419

ABSTRACT

The HLS of digital filters is a complex optimization task in electronic design automation that increases the level of abstraction for designing and scheming digital circuits. The complexity of this issue attracting the interest of the researcher and solution of this issue is a big challenge for the researcher. The scientists are trying to present the various most powerful methods for this issue, but keep in mind these methods could be trapped in the complex space of this problem due to own weaknesses. Due to shortcomings of these methods, we are trying to design a new framework with the mixture of the phases of the powerful approaches for high level synthesis of digital filters in this work. This modification has been done by merging the chimp optimizer with sine cosine functions. The sine cosine phases helped in enhancing the exploitation phase of the chimp optimizer and also ignored the local optima in the search area during the searching of new shortest paths. The algorithms have been applied on 23-standard test suites and 14-digital filters for verifying the performance of the algorithms. Experimental results of single and multi-objective functions have been compared in terms of best score, best maxima, average, standard deviation, execution time, occupied area and speed respectively. Furthermore, by analyzing the effectiveness of the proposed algorithm with the recent algorithms for the HLS digital filters design, this can be concluded that the proposed method dominates the other two methods in HLS digital filters design. Another prominent feature of the proposed system in addition to the stated enhancement, is its rapid runtime, lowest delay, occupied area and lowest power in achieving an appropriate response. This could greatly reduce the cost of systems with broad dimensions while increasing the design speed.


Subject(s)
Algorithms
5.
Sci Rep ; 12(1): 14968, 2022 Sep 02.
Article in English | MEDLINE | ID: mdl-36056041

ABSTRACT

Wireless sensors are the basic requisite of today's smart infrastructure based on internet of things (IoTs), 5G and wireless sensor networks (WSNs). WSNs are widely used in industrial applications, precision agriculture and animal tracking systems, environment monitoring, smart grids, energy control systems, smart buildings and entertainment industry etc. The distributed and dynamic scheme of WSNs establishes very unique demands in developing clustering and routing protocols. In order to meet the demand of efficient WSNs, most important requirement is energy management and extension of network lifetime. So energy constraints issue is one of the most emerging area for research to reduce the complexity of network functioning. Due to the complexity of this task we need more robustness optimizer algorithms which can tackle these types of tasks. In this article we are trying to develop one improved version of chimp optimizer for energy constraint issues. In this modification have been integrated the chimp optimizer with dimension learning based hunting (DLH) search technique, known as Improved Chimp Optimizer Algorithm (IChoA). Here the DLH search strategy helps in maintaining diversity and improves the balance between exploitation and exploration. To compute the robustness in solving the optimizer issues, IChoA has been tested on 29-CEC-2017 test suites and energy constraint issues. Experimental solutions obtained by proposed methods are verified with recent methods. All simulation shows that the IChoA method can be most effective in solving the standard complex suites and energy constraint issues.


Subject(s)
Computer Communication Networks , Wireless Technology , Cluster Analysis , Conservation of Energy Resources , Physical Phenomena
6.
J Supercomput ; 78(9): 11975-12023, 2022.
Article in English | MEDLINE | ID: mdl-35221523

ABSTRACT

Wireless sensor networks (WSNs) contain sensor nodes in enormous amount to accumulate the information about the nearby surroundings, and this information is insignificant until the exact position from where data have been collected is revealed. Localization of sensor nodes in WSNs plays a significant role in several applications such as detecting the enemy movement in military applications. The major aim of localization problem is to find the coordinates of all target nodes with the help of anchor nodes. In this paper, two variants of bat optimization algorithm (BOA) are proposed to localize the sensor nodes in a more efficient way and to overcome the drawbacks of original BOA, i.e. being trapped in local optimum solution. The exploration and exploitation features of original BOA are modified in the proposed BOA variants 1 and 2 using improved global and local search strategies. To validate the efficiency of the proposed BOA variants 1 and 2, several simulations have been performed for various numbers of target nodes and anchor nodes, and the results are compared with original BOA and other existing optimization algorithms applied to node localization problem. The proposed BOA variants 1 and 2 outperform the other algorithms in terms of mean localization error, number of localized nodes and computing time. Further, the proposed BOA variants 1 and 2 and original BOA are also compared in terms of various errors and localization efficiency for several values of target and anchor nodes. The simulations results signify that the proposed BOA variant 2 is superior to the proposed BOA variant 1 and existing BOA in terms of several errors. The node localization based on the proposed BOA variant 2 is more effective as it takes less time to perform computations and has less mean localization error than the proposed BOA variant 1, BOA and other existing optimization algorithms.

7.
Medicina (Kaunas) ; 57(7)2021 Jul 07.
Article in English | MEDLINE | ID: mdl-34356974

ABSTRACT

Background and Objective: Despite the increasing treatment options for patients with metastatic breast cancer (MBC), unmet needs remain common, especially in low and middle-income countries where resources are limited and MBC patients face many challenges. They often join support groups to cope with their unmet needs. Currently, many MBC patients connect with each other via online support group in view of the constant availability of support and rapid information exchange. The objective of this study is to determine the unmet needs of women with MBC from an online support group. Material and Methods: Messages in an online support group of twenty-two MBC patients over a period of three years from August 2016 till August 2019 were thematically analyzed. Results: Three themes were generated, (1) unmet information needs (2) unmet financial needs (3) unmet support needs. Women needed information on side effects of treatment, new treatment options and availability of clinical trials. Although Malaysia has universal health care coverage, access to treatment remains a major challenge. When treatment was not available in the public hospitals, or waiting lists were too long, women were forced to seek treatment in private hospitals, incurring financial catastrophe. Insufficient private insurance and inadequate social security payments force many women to consider stopping treatment. Women felt that they were not getting support from their clinicians in the public sector, who were quick to stop active treatment and advise palliation. On the other hand, clinicians in the private sector advise expensive treatment beyond the financial capability of the patients. Women with families also face the challenge of managing their family and household in addition to coping with their illness. Conclusions: There is a need for healthcare professionals, policy makers, and civil society to better address the needs of MBC patients through patient-centered, multidisciplinary and multi-organizational collaboration.


Subject(s)
Breast Neoplasms , Adaptation, Psychological , Breast Neoplasms/therapy , Female , Health Services Needs and Demand , Humans , Income , Qualitative Research , Self-Help Groups
8.
Support Care Cancer ; 29(5): 2631-2638, 2021 May.
Article in English | MEDLINE | ID: mdl-32968861

ABSTRACT

PURPOSE: Wider breast cancer (BC) treatment options, short consultation time with physicians, lack of knowledge, and poor coping skills at the time of diagnosis may affect patients' decisions causing treatment delays and non-adherence. To address this gap, a breast care nurse video orientation program was started. Our aim was to evaluate the video on patients' knowledge, satisfaction, and treatment adherence. METHODS: The video was developed using the BC delay explanatory model. A self-administered pre- and post-survey on 241 newly diagnosed BC patients in University Malaya Medical Center was performed. The Wilcoxon matched paired signed rank test was used to evaluate patients' pre and post perceived knowledge using a Likert scale 0 to 4 (0 = "no knowledge," 4 = "a great degree of knowledge"). Treatment adherence among participants were measured after 1-year follow-up. RESULTS: Eighty percent of the patients reported that the video met or exceeded their expectations. In total 80.5% reported that the video was very effective and effective in improving their perspective on BC treatments. There was improvement in perceived knowledge for treatment options (mean scores; M = 0.93 versus M = 2.97) (p < 0.001) and also for perceived knowledge on types of operation, information on chemotherapy, radiotherapy, hormone therapy, healthy diet, physical activity after treatments, and care of the arm after operation(p < 0.001). In total 89.4%, 79.3%, and 85.9% adhered to surgical, chemotherapy, and radiotherapy recommended treatment, respectively. CONCLUSION: The video improved patients' perceived knowledge and satisfaction. The program improved access not only to new BC patients but also the public and found sustainable using the YouTube platform.


Subject(s)
Breast Neoplasms/epidemiology , Health Education/methods , Program Evaluation/methods , Adult , Female , Humans , Malaysia , Male , Middle Aged , Pilot Projects
9.
J Neurol Neurosurg Psychiatry ; 92(3): 295-302, 2021 03.
Article in English | MEDLINE | ID: mdl-33184094

ABSTRACT

OBJECTIVE: To establish a rigorous, expert-led, evidence-based approach to the evaluation of licensed drugs for repurposing and testing in clinical trials of people with progressive multiple sclerosis (MS). METHODS: We long-listed licensed drugs with evidence of human safety, blood-brain barrier penetrance and demonstrable efficacy in at least one animal model, or mechanistic target, agreed by a panel of experts and people with MS to be relevant to the pathogenesis of progression. We systematically reviewed the preclinical and clinical literature for each compound, condensed this into a database of summary documents and short-listed drugs by scoring each one of them. Drugs were evaluated for immediate use in a clinical trial, and our selection was scrutinised by a final independent expert review. RESULTS: From a short list of 55 treatments, we recommended four treatments for immediate testing in progressive MS: R-α-lipoic acid, metformin, the combination treatment of R-α-lipoic acid and metformin, and niacin. We also prioritised clemastine, lamotrigine, oxcarbazepine, nimodipine and flunarizine. CONCLUSIONS: We report a standardised approach for the identification of candidate drugs for repurposing in the treatment of progressive MS.


Subject(s)
Drug Repositioning , Multiple Sclerosis, Chronic Progressive/drug therapy , Animals , Drug Evaluation , Humans
10.
Psychooncology ; 28(1): 147-153, 2019 01.
Article in English | MEDLINE | ID: mdl-30346074

ABSTRACT

OBJECTIVES: Patient-reported outcomes (PROs) in high-income countries (HICs) suggest that physical, emotional, and psychological needs are important in cancer care. To date, there have been few inconsistent descriptions of PROs in low-income and middle-income Asian countries. Using a standard questionnaire developed by the International Consortium for Health Outcomes Measurement (ICHOM), we compared the perceived importance of PROs between patients in Malaysia and those in HICs and between clusters of Malaysian women. METHODS: Breast cancer patients were recruited from three Malaysian hospitals between June and November 2017. We compared the proportion of patients who rated PROs as very important (scored 7-9 on a 9-point Likert scale) between Malaysian patients and data collected from patients in HICs via the ICHOM questionnaire development process, using logistic regression. A two-step cluster analysis explored differences in PROs among Malaysian patients. RESULTS: The most important PROs for both cohorts were survival, overall well-being, and physical functioning. Compared with HIC patients (n = 1177), Malaysian patients (n = 969) were less likely to rate emotional (78% vs 90%), cognitive (76% vs 84%), social (72% vs 81%), and sexual (30% vs 56%) functioning as very important outcomes (P < 0.001). Cluster analysis suggests that older, parous, Malaysian women, who were less likely to have received breast reconstructive surgery, were more likely to rate body image and satisfaction with the breast as very important outcomes. CONCLUSION: Taking into account the differences in PROs by cultural and socioeconomic settings could improve patient expectation of services and refine the assessment of cancer care outcomes.


Subject(s)
Breast Neoplasms/psychology , Cancer Survivors/psychology , Patient Reported Outcome Measures , Quality of Life/psychology , Adaptation, Psychological , Adult , Body Image/psychology , Breast Neoplasms/therapy , Cancer Survivors/statistics & numerical data , Cross-Sectional Studies , Developed Countries , Female , Humans , Income/statistics & numerical data , Malaysia , Middle Aged , Self Concept , Socioeconomic Factors , Surveys and Questionnaires
11.
Article in English | WPRIM (Western Pacific) | ID: wpr-628348

ABSTRACT

Patients with diabetes have an earlier onset and increased severity of anaemia compared to those with similar degree of renal impairment from other causes. Anaemia is associated with an increased risk of vascular complications. In this study, we determined the prevalence of anaemia in T2DM patients and its association with sociodemographic, clinical and laboratory parameters in an endocrine tertiary hospital in Malaysia. This was a cross-sectional study using retrospective electronic data from January 2011 to December 2013 of 165 T2DM patients in Hospital Putrajaya. Data was analysed using IBM SPSS Statistics version 21.0 for Windows. The prevalence of anaemia was 39.4% and majority had normocytic normochromic (80%), mild (58.5%) anaemia. Majority were Malays (73.9%), aged below 60 with comparable gender percentage and long-standing, poorly-controlled DM [median fasting blood sugar (FBS) 8mmol/L; glycated haemoglobin (HbA1c) 7.9%]. Using the KDIGO chronic kidney disease (CKD) staging system, 86% of these patients were in stages 3-5. Anaemic patients had a significantly higher serum urea, creatinine and a lower FBS, estimated glomerular filtration rate (eGFR) compared to non-anaemic patients. Anaemic patients with diabetic nephropathy had a significantly lower haemoglobin (Hb) compared to those without this complication (p=0.022). The sensitivity and specificity at a cut-off eGFR value of 38.3 ml/min/1.73 m2 (maximum Youden index = 0.462) was 66.7% and 79.5%, respectively to discriminate mild from moderate anaemia. This study shows that anaemia is already present in T2DM patients in Hospital Putrajaya at initial presentation to the specialist outpatient clinic and is significantly associated with CKD. Hence, it emphasises the obligatory need for routine and follow-up full blood count monitoring in T2DM patients in primary care as well as tertiary settings in Malaysia to enable early detection and aggressive correction of anaemia in preventing further complications.


Subject(s)
Diabetes Mellitus, Type 2
12.
Indian J Clin Biochem ; 29(3): 345-50, 2014 Jul.
Article in English | MEDLINE | ID: mdl-24966484

ABSTRACT

Identification of reliable biomarkers for detection and staging of cancer and monitoring the outcome of anticancer therapy has been considered to be of high importance. We aimed to estimate the levels of serum glycoproteins, protein bound-hexose, protein bound hexosamine, protein bound fucose, protein bound sialic acid and protein bound carbohydrate in 32 ovarian cancer patients and compared them with the levels that found in 25 normal subjects. As compared to the normal subjects, all the four fractions of glycoproteins level were significantly elevated in ovarian cancer patients (p < 0.05). Chemotherapy in these patients significantly decreased the levels of serum glycoproteins (p < 0.05). Thus, high levels of serum glycoproteins in ovarian cancer patients could be due to abnormal protein glycosylation indicating malignant transformation of the cells.

13.
Breast ; 22(5): 606-15, 2013 Oct.
Article in English | MEDLINE | ID: mdl-24007941

ABSTRACT

Breast cancer survivors may experience long-term treatment complications, must live with the risk of cancer recurrence, and often experience psychosocial complications that require supportive care services. In low- and middle-income settings, supportive care services are frequently limited, and program development for survivorship care and long-term follow-up has not been well addressed. As part of the 5th Breast Health Global Initiative (BHGI) Global Summit, an expert panel identified nine key resources recommended for appropriate survivorship care, and developed resource-stratified recommendations to illustrate how health systems can provide supportive care services for breast cancer survivors after curative treatment, using available resources. Key recommendations include health professional education that focuses on the management of physical and psychosocial long-term treatment complications. Patient education can help survivors transition from a provider-intense cancer treatment program to a post-treatment provider partnership and self-management program, and should include: education on recognizing disease recurrence or metastases; management of treatment-related sequelae, and psychosocial complications; and the importance of maintaining a healthy lifestyle. Increasing community awareness of survivorship issues was also identified as an important part of supportive care programs. Other recommendations include screening and management of psychosocial distress; management of long-term treatment-related complications including lymphedema, fatigue, insomnia, pain, and women's health issues; and monitoring survivors for recurrences or development of second primary malignancies. Where possible, breast cancer survivors should implement healthy lifestyle modifications, including physical activity, and maintain a healthy weight. Health professionals should provide well-documented patient care records that can follow a patient as they transition from active treatment to follow-up care.


Subject(s)
Breast Neoplasms/psychology , Breast Neoplasms/therapy , Developing Countries , Neoplasm Recurrence, Local/diagnosis , Resource Allocation , Survivors/psychology , Antineoplastic Agents/adverse effects , Body Image/psychology , Breast Neoplasms/complications , Breast Neoplasms/diagnosis , Breast Neoplasms/economics , Depression/diagnosis , Depression/etiology , Depression/therapy , Fatigue/therapy , Female , Health Personnel/education , Humans , Life Style , Lymphedema/therapy , Menopause , Pain Management , Patient Education as Topic , Postoperative Complications/therapy , Self Care , Sexual Behavior/psychology , Sleep Initiation and Maintenance Disorders/therapy
14.
Asian Pac J Cancer Prev ; 13(4 Suppl): 23-36, 2012.
Article in English | MEDLINE | ID: mdl-22631594

ABSTRACT

Survival following a diagnosis of cancer is contingent upon an interplay of factors, some non-modifiable (e.g., age, sex, genetics) and some modifiable (e.g., volitional choices) but the majority determined by circumstance (personal, social, health system context and capacity, and health policy). Accordingly, mortality and survival rates vary considerably as a function of geography, opportunity, wealth and development. Quality of life is impacted similarly, such that aspects of care related to coordination and integration of care across primary, community and specialist environments; symptom control, palliative and end-of-life care for those who will die of cancer; and survivorship challenges for those who will survive cancer, differs greatly across low, middle and high-income resource settings. Session 3 of the 4th International Cancer Control Congress (ICCC-4) focused on cancer care and treatment through three plenary presentations and five interactive workshop discussions: 1) establishing, implementing, operating and sustaining the capacity for quality cancer care; 2) the role of primary, community, and specialist care in cancer care and treatment; 3) the economics of affordable and sustainable cancer care; 4) issues around symptom control, support, and palliative/end-of-life care; and 5) issues around survivorship. A number of recommendations were proposed relating to capacity-building (standards and guidelines, protocols, new technologies and training and deployment) for safe, appropriate evidence-informed care; mapping and analysis of variations in primary, community and specialist care across countries with identification of models for effective, integrated clinical practice; the importance of considering the introduction, or expansion, of evidence-supported clinical practices from the perspectives of health economic impact, the value for health resources expended, and sustainability; capacity-building for palliative, end-of-life care and symptom control and integration of these services into national cancer control plans; the need for public education to reduce the fear and stigma associated with cancer so that patients are better able to make informed decisions regarding follow-up care and treatment; and the need to recognize the challenges and needs of survivors, their increasing number, the necessity to integrate survivorship into cancer control plans and the economic and societal value of functional survival after cancer. Discussions highlighted that coordinated care and treatment for cancer patients is both a ' systems'challenge and solution, requiring the consideration of patient and family circumstances, societal values and priorities, the functioning of the health system (access, capacity, resources, etc.) and the importance assigned to health and illness management within public policy.


Subject(s)
Continuity of Patient Care/organization & administration , Delivery of Health Care/organization & administration , Neoplasms/therapy , Developing Countries , Health Services Accessibility , Humans
15.
Toxicol Int ; 17(2): 94-8, 2010 Jul.
Article in English | MEDLINE | ID: mdl-21170254

ABSTRACT

In the present investigation, the behavioral, morphological, and histopathological effects of cypermethrin, a widely used synthetic pyrethroid insecticide, was ascertained in male and female albino rats (Rattus norvegicus). Cypermethrin administered at repeated oral doses of 5 and 20 mg/kg/day for 30 days produced varying degree of mild to moderate toxic symptoms and behavioral changes in both male and female rats. The lower dose produced very mild toxicosis characterized by intermittent diarrhea, decreased feed intake, and thick eye discharge, whereas higher dose displayed mild to moderate toxicosis with diarrhea, decreased feed intake, loss of body weight, dyspnoea, ataxia, eye discharge, and salivation. Two female and one male albino rats died between 23 to 28 days after displaying signs of incoordination and tremors. Repeated oral doses of cypermethrin for 30 days enhanced the relative weight of liver and heart, but significantly decreased that of brain, kidneys, and testes. Microscopically, cypermethrin produced neuronal degeneration and increase in glial cells in brain, and disorganization of hepatic laminae, increase in sinusoid, and necrosis of hepatocytes in liver. Section of kidney displayed hemorrhage and sloughing off renal epithelial cell in the convoluted tubules, shrinkage of glomeruli, and necrosis of renal tubules. Repeated administration of cypermethrin also produced hemorrhages within myocardium, disruption of branching structure, and loss of striation of cardiac tissue; thickening of alveolar septa in lungs, partial to extensive loss of various stages of spermatogenesis in testes, and loss of follicular cells and oocytes in ovaries. The study suggested that repeated oral exposure of cypermethrin has considerable harmful effects on body organs in R. norvegicus.

16.
Bioorg Med Chem ; 15(12): 3997-4008, 2007 Jun 15.
Article in English | MEDLINE | ID: mdl-17442576

ABSTRACT

In the present study, a series of N-{4-[(4-amino-5-sulfanyl-4H-1,2,4-triazol-3-yl)methyl]-1,3-thiazol-2-yl}-2-substituted-amide (1a-d) derivatives were synthesized in good yields and characterized by IR, 1H NMR, mass spectral and elemental analyses. The compounds were evaluated for their preliminary in vitro antibacterial activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Salmonella typhosa and then were screened for antitubercular activity against Mycobacterium tuberculosis H37 Rv strain by broth microdilution assay method. The antibacterial data of the tested compounds indicated that most of the synthesized compounds showed better activity against bacteria compared to reference drugs. The in vitro antitubercular activity reports of tested compounds against M. tuberculosis strain H37 Rv showed moderate to better activity.


Subject(s)
Antitubercular Agents/chemical synthesis , Antitubercular Agents/pharmacology , Mycobacterium tuberculosis/drug effects , Thiazoles/chemical synthesis , Thiazoles/pharmacology , Antitubercular Agents/chemistry , Magnetic Resonance Spectroscopy , Mass Spectrometry , Microbial Sensitivity Tests , Thiazoles/chemistry
17.
Bioorg Med Chem ; 15(7): 2601-10, 2007 Apr 01.
Article in English | MEDLINE | ID: mdl-17291769

ABSTRACT

A novel clubbed triazolyl thiazole series of cdk5/p25 inhibitors, potentially useful for the treatment of Alzheimer's disease, is disclosed. Evaluation of the SAR of substitution within these series has allowed the identification of a range of compounds which significantly reduce brain cdk5/p25 and thus have potential as possible treatments for Alzheimer's disease.


Subject(s)
Alzheimer Disease/drug therapy , Cyclin-Dependent Kinase 5/antagonists & inhibitors , Enzyme Inhibitors/chemical synthesis , Enzyme Inhibitors/pharmacology , Thiazoles/chemical synthesis , Thiazoles/pharmacology , Animals , Brain/drug effects , Brain/enzymology , Chlorocebus aethiops , Drug Evaluation, Preclinical , Enzyme Inhibitors/therapeutic use , Indicators and Reagents , Magnetic Resonance Spectroscopy , Microwaves , Structure-Activity Relationship , Vero Cells
18.
Lancet ; 365(9472): 1742, 2005.
Article in English | MEDLINE | ID: mdl-15894100
19.
Indian J Clin Biochem ; 20(2): 154-7, 2005 Jul.
Article in English | MEDLINE | ID: mdl-23105550

ABSTRACT

The present study deals with estimation of levels of fractions of serum glycoproteins, protein bound hexose (PBH), protein bound hexosamine (PBHex), protein bound fucose (PBF), protein bound sialic acid (PBS) and protein bound carbohydrate (PBC) in thirty patients of Major Depressive Disorders (MDD) in comparison with thirty normal subjects. In patients of MDD, the level of PBH, PBHex, PBF, PBS and PBC were significantly higher as compared to the normal subjects (p<0.05). In patients, of MDD, after one-month treatment with fluoxetine, the levels of PBH, PBHex, PBF, PBS and PBC were significantly decreased as compared to the levels of these fractions in same patients of MDD before beginning of the treatment (p<0.05). Based on findings of the present study, it can be concluded that changes in the level of serum glycoproteins level before and after treatment with fluoxetine can be correlated with clinical status of MDD.

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