Potential drug repurposing of ruxolitinib to inhibit the JAK/STAT pathway for the treatment of patients with epithelial ovarian cancer

AIM

This review aimed to describe the potential for therapeutic targeting of the JAK/STAT signaling pathway by repurposing the clinically-approved JAK inhibitor ruxolitinib in the patients with epithelial ovarian cancer (OC) setting.

METHODS

We reviewed publications that focus on the inhibition of the JAK/STAT pathway in hematological and solid malignancies including OC.

RESULTS

Preclinical studies showed that ruxolitinib effectively reduces OC cell viability and metastasis and enhances the anti-tumor activity of chemotherapy drugs. There are a number of recent clinical trials exploring the role of JAK/STAT inhibition in solid cancers including OC. Early results have not adequately supported efficacy in solid tumors. However, there are preclinical data and clinical studies supporting the use of ruxolitinib in combination with both chemotherapy and other targeted drugs in OC setting.

CONCLUSION

Inflammatory conditions and persistent activation of the JAK/STAT pathway are associated with tumourigenesis and chemoresistance, and therapeutic blockade of this pathway shows promising results. For women with OC, clinical investigation exploring the role of ruxolitinib in combination with chemotherapy agents or other targeted therapeutics is warranted.

Examining the psychosocial impacts of the COVID-19 pandemic: an international cross-sectional study protocol

INTRODUCTION

The COVID-19 pandemic exposed people to significant and prolonged stress. The psychosocial impacts of the pandemic have been well recognised and reported in high-income countries (HICs) but it is important to understand the unique challenges posed by COVID-19 in low- and middle-income countries (LMICs) where limited international comparisons have been undertaken. This protocol was therefore devised to study the psychosocial impacts of the COVID-19 pandemic in seven LMICs using scales that had been designed for or translated for this purpose.

METHODS AND ANALYSIS

This cross-sectional study uses an online survey to administer a novel COVID Psychosocial Impacts Scale (CPIS) alongside established measures of psychological distress, post-traumatic stress, well-being and post-traumatic growth in the appropriate language. Participants will include adults aged 18 years and above, recruited from Indonesia, Iraq, Iran, Malaysia, Pakistan, Somalia and Turkey, with a pragmatic target sample size of 500 in each country.Data will be analysed descriptively on sociodemographic and study variables. In addition, CPIS will be analysed psychometrically (for reliability and validity) to assess the suitability of use in a given context. Finally, within-subjects and between-subjects analyses will be carried out using multi-level mixed-effect models to examine associations between key sociodemographic and study variables.

ETHICS AND DISSEMINATION

Ethical approval was granted by the Human Ethics Committee, University of Otago, New Zealand (Ref. No. 21/102). In addition, international collaborators obtained local authorisation or ethical approval in their respective host universities before data collection commenced.Participants will give informed consent before taking part. Data will be collected and stored securely on the University of Otago, New Zealand Qualtrics platform using an auto-generated non-identifiable letter-number string. Data will be available on reasonable request. Findings will be disseminated by publications in scientific journals and/or conference presentations.

TRIAL REGISTRATION NUMBER

NCT05052333.

Antispermatogenic and antifertility effect of Pegaga (Centella asiatica L) on the testis of male Sprague-Dawley rats

AIM

Antifertility agents with safety and effectiveness in terms of minimum side effects have always been a subject of debate. Many studies have been conducted on plants to observe the antifertility effect, but majority of them were toxic. Pegaga or Centella asiatica L. is one of the popular herb traditionally consumed raw amongst people in Malaysia. The main objective of the present study was to investigate the effects of Centella asiatica L. extract on rat testis.

MATERIALS AND METHODS

Thirty two Sprague-Dawley adult male rats, (12 weeks) were divided into four groups:- (I) control group (with distilled water), (II) low dose group (with 100 mg/kg body weight extract), (III) medium dose group (with 200 mg/kg body weight extract), and (IV) high dose group (with 300 mg/kg body weight extract) and force fed for 42 days. The rats were then sacrificed and the testis were removed for histological analysis.

RESULTS

The testis in the control group showed normal features with successive stages of transformation of the seminiferous epithelium into spermatozoa, whereas treated groups showed some degeneration of spermatogenic cells and reduction of spermatozoa in the lumen of the seminiferous tubules. Serum testosterone level was reduced in all treatment groups as compared to the control while cauda epididymal sperm count and motility showed significant decrease. Treatment with medium and high doses showed the most significant reduction (p<0.05) in sperm count.

CONCLUSIONS

It is concluded that Centella asiatica L. exhibited antispermatogenic and antifertility effects on reproductive system of the male rats.