The well-orchestrated process of wound healing may be negatively impacted from interrupted or incomplete tissue regenerative processes. The healing potential is further compromised in patients with diabetes mellitus, chronic venous insufficiency, critical limb ischemia, and immunocompromised conditions, with a high health care burden and expenditure. Stem cell-based therapy has shown promising results in clinical studies. Mesenchymal stem cell-derived exosomes (MSC Exos) may favorably impact intercellular signaling and immunomodulation, promoting neoangiogenesis, collagen synthesis, and neoepithelization. This article gives an outline of the biogenesis and mechanism of extracellular vesicles (EVs), particularly exosomes, in the process of tissue regeneration and discusses the use of preconditioned exosomes, platelet-rich plasma-derived exosomes, and engineered exosomes in three-dimensional bioscaffolds such as hydrogels (collagen and chitosan) to prolong the contact time of exosomes at the recipient site within the target tissue. An appropriate antibiotic therapy based on culture-specific guidance coupled with the knowledge of biopolymers helps to fabricate nanotherapeutic materials loaded with MSC Exos to effectively deliver drugs locally and promote novel approaches for the management of chronic wounds.

Genital self-mutilation (GSM) is a rare phenomenon that can occur in patients with severe mental health illness. This case report highlights a rare case of self-inflicted bilateral testicular amputation and partial penile amputation in a patient who is a transwoman with a psychiatric history. The patient initially presented to urology in extremis with bilateral testicular amputation. The patient was resuscitated but required emergency surgery in the form of bilateral inguinal approach to ligate the cord and control haemostasis. The testes were not re-implanted as the patient refused and, after psychiatric discussion, was deemed to have capacity. She then re-presented within a week with self-inflicted partial amputation of penis. On both admissions, the patient had psychiatric evaluation but she was sectioned under the mental health act the second time. This case demonstrates how one can control haemostasis in the emergency scenarios of GSM and emphasizes the importance of psychiatric illness and evaluation in patients presenting with GSM.