Background: Research has examined the relationship between salivary lactate dehydrogenase (LDH) levels and head and neck squamous cell carcinoma (HNSCC) screening and prognosis. Due to biochemical changes in cancer cells and increased production of lactate products in the body. The present systematic review aims to evaluate the changes in salivary LDH levels in HNSCC patients. Methods: The present study is a systematic review and meta-analysis. The data were collected by searching PubMed, Science Direct, Scopus, Web of Science, and Google Scholar from 2000 to 2021. The heterogeneity of the articles was analyzed using I² and TAU². Results: After searching the databases, of 988 articles, 665 duplicated articles were excluded by adopting the inclusion and exclusion criteria. So, 25 articles were primarily selected to be reviewed and evaluated for quality. Finally, 19 articles were selected and analyzed according to the Newcastle–Ottawa checklist. A total of 642 HNSCC patients were reviewed. The meta-analysis showed salivary LDH levels in the HNSCC group were higher than the control group (mean difference = 0.675, standard error = 0.058) (P < 0.001). Conclusions: As the research results showed, a significant correlation was observed between salivary LDH levels and HNSCCs. So, LDH can be employed as a valuable and minimally invasive biomarker in head and neck cancer screening and prevention.

The family physician program (FPP) is one of the most significant health care reforms in Iran; however, many studies showed that this program has not been able to achieve its intended objectives because of a variety of challenges. This program, despite the existing challenges, is going to be expanded across the country. To improve the likelihood of its success, identification of the structural and infrastructural challenges is necessary. This systematic review was conducted to assess the structural and infrastructural challenges of FPP in Iran. This systematic review of the literature was conducted in order to investigate the infrastructure and structure needs of the current program in Iran. All published articles related to the FPP in Iran were the subject of this study. The eligibility criteria included original articles, reviews, or case studies published in English or Persian during 2011–2021 related to the challenges in the referral system of FPP in Iran. Data were extracted based on Sample, Phenomenon of Interest, Design, Evaluation, Research type technique and were reported based on the structure of Preferred Reporting Items for Systematic Reviews and Meta-Analyses. International credible scholarly databases were searched. The search strategy was defined based on keywords and the search syntax. This study identified different challenges of the referral system in the areas associated with legal structure, administration, and social structure. The identified challenges in this program should be addressed in order to ensure that this program will lead to improved quality of care and equity in Iran health care system.

As per the goals of the family physician program, it is essential to pay attention to the effectiveness and performance of FPP. Although the implementation of the FPP program is an important development in the discussion of rural health insurance and the provision of health services and referral systems in the country, the evidence suggests that by identifying challenges and taking appropriate action, this plan can be improved. This study aimed to investigate the challenges of rural Family Physician Policy (FPP) in northern Iran. This study comprised a mixed method. The former intended to identify the challenges of rural FFP using the narrative review method. To achieve a comprehensive list of challenges, a narrative review and content analysis were performed and semi-structured interviews were held with key stakeholders of FPP in the north of Iran, including physicians, managers, and policymakers. Identified challenges were categorized into eight categories including the weakness of the health insurance system, low comprehensiveness of executive guidelines, inappropriate recruitment and maintenance of human resources, weakness of cultural context, low efficacy of health information management system, poor educational effectiveness, inappropriate motivational mechanisms, and weakness of the referral system. As per the quantitative findings, “weakness of the referral system” and “inappropriate recruitment and maintenance of human resources” had the lowest and highest weaknesses, respectively. To address existing challenges in the rural FPP, a comprehensive plan of action should be developed with an emphasis on human resource management, health information management system, comprehensive rural health insurance, and legislation.