Intralesional Bleomycin Injection for Propranolol-Resistant Hemangiomas

Microneedle delivery system with rapid dissolution and sustained release of bleomycin for the treatment of hemangiomas

Hemangioma of infancy is the most common vascular tumor during infancy and childhood. Despite the proven efficacy of propranolol treatment, certain patients still encounter resistance or face recurrence. The need for frequent daily medication also poses challenges to patient adherence. Bleomycin (BLM) has demonstrated effectiveness against vascular anomalies, yet its use is limited by dose-related complications. Addressing this, this study proposes a novel approach for treating hemangiomas using BLM-loaded hyaluronic acid (HA)-based microneedle (MN) patches. BLM is encapsulated during the synthesis of polylactic acid (PLA) microspheres (MPs). The successful preparation of PLA MPs and MN patches is confirmed through scanning electron microscopy (SEM) images. The HA microneedles dissolve rapidly upon skin insertion, releasing BLM@PLA MPs. These MPs gradually degrade within 28 days, providing a sustained release of BLM. Comprehensive safety assessments, including cell viability, hemolysis ratio, and intradermal reactions in rabbits, validate the safety of MN patches. The BLM@PLA-MNs exhibit an effective inhibitory efficiency against hemangioma formation in a murine hemangioma model. Of significant importance, RNA-seq analysis reveals that BLM@PLA-MNs exert their inhibitory effect on hemangiomas by regulating the P53 pathway. In summary, BLM@PLA-MNs emerge as a promising clinical candidate for the effective treatment of hemangiomas.

Additive value of single intralesional bleomycin injection to propranolol in the management of proliferative infantile hemangioma

BACKGROUND

/Objective: We aimed to evaluate whether additional intralesional bleomycin injections benefit children with proliferative infantile hemangiomas (IHs).

METHODS

In this retrospective case-control study, we examined the medical records of 216 infants who were followed up for proliferative IH. Patients in group 1 were treated with propranolol orally at 2 mg/kg/day. Group 2 was treated with oral propranolol combined with intralesional bleomycin injections.

RESULTS

We retrospectively reviewed 95 and 121 patients in groups 1 and 2, respectively. No significant differences were observed between both groups regarding visiting age, sex, lesion thickness, or risk site. The overall cure rates in groups 1 and 2 were 77.89% (74/95) and 84.30% (102/121), respectively. The overall distribution of the length of cure significantly differed between both groups (P = 0.035). From the survival analysis (P = 0.026), the median survival time was 198 days (95% confidence interval (CI) 174.46-221.54) for group 1 and 139 days (95% CI 114.58-163.42) for group 2. The effect of treatment modality (hazard ratio (HR) = 1.41, P = 0.031) and risk site on survival time (HR = .54, P < 0.001) was significant.

CONCLUSION

No significant differences were observed in the resolution of proliferative IH; however, intralesional bleomycin injection with systemic propranolol for proliferative IH treatment may provide a more rapid resolution.

Predictors of poor response to oral propranolol in infantile hemangiomas

BACKGROUND

Propranolol is the first-line treatment for infantile hemangiomas (IH). Cases of propranolol-resistant infantile hemangiomas are rarely reported. The purpose of our study was to investigate the predictive factors for poor response to propranolol.

METHODS

A prospective analytical study was conducted between January 2014 and January 2022 including all patients with IH who received oral propranolol therapy at a dose of 2-3 mg/kg/day maintained for at least 6 months.

RESULTS

A total of 135 patients with IH were treated with oral propranolol. Poor response was reported in 18 (13.4%) of the patients: 72% were girls and 28% were boys. Overall, 84% of the IH were mixed, and hemangiomas were multiple in three cases (16%), nasal tip hemangiomas accounted for four cases (22%), and 15 patients (83%) had segmental hemangiomas. There was no significant association between the age or sex of the children and type of response to treatment (p > 0.05). No significant association was found between the type of hemangioma and the therapeutic outcome as well as the recurrence after treatment discontinuation (p > 0.05). Multivariate logistic regression analysis revealed that nasal tip hemangiomas, multiple hemangiomas, and segmental hemangiomas were at greater risk of poor response to beta-blockers (p < 0.05).

CONCLUSION

Poor response to propranolol therapy has rarely been reported in the literature. In our series, it was approximately 13.4%. To our knowledge, no previous publications have focused on the predictive factors of poor response to beta-blockers. However, the reported risk factors for recurrence are discontinuation of treatment before 12 months of age, mixed or deep type IH, and female gender. In our study, the predictive factors for poor response were multiple type IH, segmental type IH, and location on the nasal tip.

Conservative treatment of Head and Neck hemangiomas using Intralesional Bleomycin

Background

Hemangiomas are vascular tumours and commonly occur in head and neck region. Complete treatment of these vascular swellings are often challenging. As surgical excision carries high risk of complications and poor cosmetic outcome, treatment is shifted more towards non-surgical modalities like steroid therapy, radiotherapy, chemotherapy and sclerotherapy.

Objective

To study the efficacy of intralesional Bleomycin sclerotherapy for head and neck hemangiomas.

Method

Seventeen patients ( 9 males and 8 females) with head and neck hemangiomas were treated with sclerotherapy using intralesional bleomycin injection ( 0.1-0.5 mg/kg/ dose) in a medical college of India. Details of the patients were recorded along with serial photographs of lesion. Post injection outcomes in form of reduction of lesion size, patient satisfaction and complications were also recorded.

Results

11 patients were completely cured, 3 had more than 50% reduction in size, one patient showed minimal reduction and two had no response. One patient had superficial ulceration, one case of slough and fever was reported. None of the patients developed severe toxic side effects and pulmonary fibrosis with follow up of 18 months.

Conclusions

Bleomycin injection is safe, easy and well tolerated method for treatment of head and neck hemangiomas. We recommend surgery only if there is no response to other conservative treatment modalities.

Apelin Receptor Can Act as a Specific Marker and Promising Therapeutic Target for Infantile Hemangioma

Infantile hemangioma (IH), the most common benign tumor in infancy, is generally sensitive to propranolol treatment. However, the challenge remains because resistance or recurrence could occur in some patients, and the mechanism or target of propranolol remains unknown. Therefore, advancement in the drug development is needed. In this study, we explored whether apelin receptor (APJ) can become a candidate target. We found that APJ is expressed only in endothelial cells of IH (HemECs) but not in other vascular anomalies, and its antagonist, ML221, can negatively regulate cellular viability and functions of HemECs. This inhibitory effect could be replicated in a murine hemangioma model. Importantly, in vitro experiments also indicated that ML221 failed to affect the proliferation or angiogenesis of normal endothelial cells or APJ-knockout HemECs. Through analysis of the phosphoantibody microarray data, ML221 was revealed to have an inhibitory effect on HemECs by suppressing the activation of mitogen-activated protein kinase/extracellular signal-regulated kinase pathway. These results verified the distinctive expression of APJ in IH and specific inhibition of HemEC activity caused by ML221. In addition, APJ was also detected in propranolol-resistant IH. Collectively, we propose that APJ can act as a specific marker and a promising therapeutic target for IH, which will facilitate further drug development.

Distribution of problematic localized facial infantile haemangiomas and their response to propranolol: a retrospective cohort study

BACKGROUND

The distribution and response to propranolol of problematic facial infantile haemangiomas (IHs) has rarely been described in the literature.

AIM

To map problematic facial IHs and observe their response to propranolol.

METHODS

Eligible patients were categorized according to focal location and cohorts corresponding to these (buccal, medial, zygomatic, lateral and multiregional) were created. The primary efficacy variable was regression score ranging from 1 to 4, calculated using results of colour Doppler ultrasonography.

RESULTS

In total, 104 patients met the inclusion criteria. There were 32 (30·8%) IHs located in the buccal area, 12 (11·5%) in the medial area, 49 (47·1%) in the lateral area and 1 (1·0%) in the zygomatic area, with 10 (9·6%) IH cases having multiregional lesions. We found that the distribution pattern of most IHs matched the surface projection of the trunk of the external carotid and the facial arteries. Further analysis showed that the median regression score in the buccal and medial groups were significantly lower than those in the lateral and multiregional groups.

CONCLUSION

Treatment of buccal and medial haemangiomas tends to be more challenging and their distribution pattern mainly reflects the direction of the facial vessels.

Intralesional steroid in the era of propranolol for infantile hemangioma-Do we need it?

INTRODUCTION

Despite its effectivity, there are reports of poor response to propranolol in the treatment of infantile hemangioma (IH). The literature is limited to the type of IH that fails to respond to propranolol. This study was conducted to analyze which types of hemangiomas respond poorly to propranolol and the effects of intralesional triamcinolone (IL TMC) in them.

MATERIAL AND METHODS

In this prospective cohort study, IH was classified as superficial, deep, and mixed. The clinical details were recorded. Propranolol was started in the patients at a dose of 1 mg/kg/day and increased to 2-3 mg/kg/day. The response to the treatment was evaluated as excellent, good, poor, and no response. IL TMC was given in the non-responding group at a dose of 1-2 mg/kg at one-month interval for a total of six doses after stopping propranolol.

RESULTS

Ninety-six patients (median age, 7 months; M/F = 2:1) were treated. Superficial hemangioma was present in 40 (41.7%), deep in 10 (10.4%), and mixed in 46 (47.9%) patients. The response was statistically better if initiated within four months of age. It was not influenced by the sex, number, site, or size. The response was statistically better in superficial hemangioma. IL TMC was administered in the 16 patients. The response was good or excellent in 10 patients.

CONCLUSION

Propranolol will be used as a first-line drug for IH. All superficial IHs are likely to respond. There will be a possibility of non-responding mixed or deep IH. Use of IL TMC seems reasonable for IH not responding to propranolol.

Bleomycin-triamcinolone sclerotherapy in the management of propranolol resistant infantile hemangioma of the maxillofacial region: A single arm prospective evaluation of clinical outcome and Doppler ultrasound parameters

INTRODUCTION

Propranolol has emerged as a first line agent in the management of hemangiomas. With increased use of propranolol, studies have also focused on relapses following propranolol therapy. Our current study evaluates the role of bleomycin triamcinolone sclerotherapy for the management of propranolol resistant Infantile Hemangioma (IH). We also evaluated the role color Doppler USG for response assessment of sclerotherapy.

METHODS

Patients with Propranolol resistant (Non- responders/ Partial responders) IHs were included in the study. Patients received intralesional bleomycin at a dose of 0.5 IU/kg followed by intralesional injection of triamcinolone at a dose of 2mg/kg body weight. Clinically patients were grouped into excellent, partial and non responders. Doppler parameters; Resistivity index (RI), Pulsatility index(PI) and Peak systolic velocity (PSV) were used to evaluate the response to sclerotherapy. These parameters were evaluated prior to sclerotherapy and 3 months following completion of therapy. The clinical responses of the patients were compared with the change in Doppler parameters before and after treatment.

RESULTS

A total of 115 participants were considered for analysis; 60.86% had excellent response, 32.17% had partial response and 6.95% had poor response. There was a significant change in terms of RI, PI and PSV in patients who were either excellent or partial responders. Poor responders did not have a significant change in Doppler parameters.

CONCLUSION

Combined bleomycin- triamcinolone sclerotherapy is an effective therapy for the management of propranolol resistant IHs. Doppler parameters RI, PI and PSV are reliable indicators of response in the management of IH.

Sandwich therapy in the management of propranolol resistant infantile hemangioma of the lip

RATIONALE

Propranolol has evolved as a first line management of infantile haemangiomas. Nevertheless, the resistance to propranolol has warranted alternative treatment modalities. We hypothesize that combination of medical and surgical therapy (sandwich therapy) to be beneficial in the management.

METHODS

Patients were divided into three groups (total=31), Group A (bleomycin sclerotherapy), Group B (surgical group), Group C (sandwich therapy). A p value &lt;0.05 was taken as significant.

RESULTS

In Group A 54.5% of patients had excellent response, 27.3% partial response and 18.2% had no response. Comparing cosmetic outcome, 25% of patients in Group B and 16.7% of patients in Group C had excellent upshot. On the contrary 18.2% of patients in bleomycin had unsatisfactory and 18.2% had poor cosmetic outcome. Sandwich therapy was cosmetically more acceptable than Bleomycin sclerotherapy (p- value = 0.049). In terms of recurrence, sandwich therapy differed significantly from surgical therapy with fewer recurrences (p-value= 0.049).

CONCLUSION

Sandwich therapy is superior to bleomycin sclerotherapy in terms of cosmetic outcome and has fewer recurrences compared to surgical group and requires single stage resection. However, further studies with the help of Doppler ultrasound are required in this regard.

Circular RNA hsa_circ_0000915 promotes propranolol resistance of hemangioma stem cells in infantile haemangiomas

BACKGROUND

Propranolol is a first-line clinical drug for infantile haemangiomas (IH) therapy. Nevertheless, resistance to propranolol is observed in some patients with IH. Circular RNAs (circRNAs) has been increasingly reported to act as a pivotal regulator in tumor progression. However, the underlying mechanism of circRNAs in IH remains unclear.

METHODS

Quantitative real-time polymerase chain reaction was performed to detect Circ_0000915, miR-890 and RNF187 expression. Protein levels were determined using western blot. CCK-8 assay was used to measure cell proliferation. Caspase-3 activity assay and flow cytometry were conducted to determine cell apoptosis. Luciferase reporter assay was carried out to assess the interaction between miR-890 and Circ_0000915 or RNF187. Chromatin immunoprecipitation assay was performed to detect the interaction between STAT3 and Circ_0000915 promoter. Biotin pull-down assay was used to detect the direct interaction between miR-890 and Circ_0000915. In vivo experiments were performed to measure tumor formation.

RESULTS

Here, we discovered depletion of Circ_0000915 increased propranolol sensitivity of haemangioma derived stem cells (HemSCs) both in vitro and in vivo, whereas forced expression of Circ_0000915 exhibited opposite effects. Mechanistically, Circ_0000915, transcriptionally induced by IL-6/STAT3 pathway, competed with RNF187 for the biding site in miR-890, led to upregulation of RNF187 by acting as a miR-890 "sponge". Furthermore, silence of miR-890 reversed increased propranolol sensitivity of HemSCs due to Circ_0000915 ablation. Moreover, increased Circ_0000915 and RNF187 levels were observed in IH tissues and positively associated with propranolol resistance, miR-890 exhibited an inverse expression pattern.

CONCLUSION

We thereby uncover the activation of IL-6/STAT3/Circ_0000915/miR-890/RNF187 axis in propranolol resistance of IH, and provide therapeutic implications for patients of IH with propranolol resistance.

Intramuscular hemangioma of the pretarsal orbicularis oculi muscle in an adult treated with intralesional bleomycin injections

Purpose

Intramuscular hemangiomas of the head and neck are rare and account for fewer than 1% of total cases. Reports of intramuscular hemangiomas in adults' eyelids, orbital and periorbital regions are especially scarce, conceivably because occurrence in the masseter muscle is more common. Herein we report a highly unusual case of hemangioma located in the pretarsal orbicularis oculi muscle of an adult patient. This report describes the clinical and pathological assessment of the patient, subsequent diagnosis of periorbital intramuscular hemangioma, and conception and implementation of a treatment approach using intralesional bleomycin injections.

Observations

A 29-year-old female patient without other clinical complaints presented with an enlarged, painless mass in the upper left eyelid. Physical examination of the mass suggested a vascular origin, and hemangioma diagnosis was confirmed by computed tomography and incisional biopsy. The anatomical location was determined as the pretarsal orbicularis oculi muscle involving mixed capillary-sized and cavernous-sized vessels. The treatment strategy involved monthly intralesional bleomycin injections (1 mL volume; 3 IU/mL) for 4 consecutive months resulting in notable size reversion. The patients experienced no associated complications, and the size remained stable over the 2-year follow-up period.

Conclusions

Intralesional bleomycin injections may offer an effective and safe treatment option for intramuscular hemangioma in the periorbital region. However, larger studies are needed to substantiate these findings further.

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Intramuscular hemangiomas in adults' heads and necks are rare.

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Periorbital intramuscular hemangioma was clinically and pathologically assessed.

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Patient treated with intralesional bleomycin injections for 4 consecutive months.

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The patient had no complications, and the size remained stable over 2 years.

Progress in the treatment of infantile hemangioma

Infantile hemangioma (IH) is a common benign tumor, which mostly resolves spontaneously; however, children with high-risk IH need treatment. Currently, the recognized first-line treatment regimen for IH is oral propranolol, but research on the pathogenesis of IH has led to the identification of new therapeutic targets, which have shown good curative effects, providing more options for disease treatment. This article summarizes the applications of different medications, dosages, and routes of administration for the treatment of IH. In addition to drug therapy, this article also reviews current therapeutic options for IH such as laser therapy, surgical treatment, and observation. To provide the best treatment, therapeutic regimens for IH should be selected based on the child's age, the size and location of the lesion, the presence of complications, the implementation conditions, and the potential outcomes of the treatment.