Eyesight is one of the most well-deserved blessings, amid all the five senses in the human body. ... more Eyesight is one of the most well-deserved blessings, amid all the five senses in the human body. It captures the raw signals from the outside world to create detailed visual images, granting the ability to witness and gain knowledge about the world. Eyes are exposed directly to the external environment; they are susceptible to the vicissitudes of diseases. The World Health Organization has predicted that the number of individuals affected by eye diseases will rise enormously in the next decades. However, the physical barriers of the eyes and the problems associated with conventional ocular formulations are significant challenges in ophthalmic drug development. This has generated the demand for a sustained ocular drug delivery system, which serves to deliver effective drug concentration at a reduced frequency for consistent therapeutic effect and better patient treatment adherence. Recent advancement in pharmaceutical dosage design has demonstrated that a stimuliresponsive in situ gel system exhibits the favorable characteristics for providing sustained ocular drug delivery and enhanced ocular bioavailability. Stimuli-responsive in situ gels undergo a phase transition (solution-gelation) in response to the ocular environmental temperature, pH, and ions. These stimuli transform the formulation into a gel at the cul de sac to overcome the shortcomings of conventional eye drops, such as rapid nasolacrimal drainage and short contact time with the ocular surface This review highlights the recent successful research outcomes of stimuli-responsive in situ gelling systems in treating in vivo models with glaucoma and various ocular infections. Additionally, it also presents the mechanism, recent development, and safety considerations of stimuli-sensitive in situ gel as the potential sustained ocular delivery system for treating common eye disorders.
Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase i... more Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase in prevalence and mortality. Hence, it is a public health issue and a high burden of disease, contributing to the economic burden in its treatment. There are multiple treatment options available for skin cancer, ranging from chemotherapy to surgery. However, these conventional treatment modalities possess several limitations, urging the need for the development of an effective and safe treatment for skin cancer that could provide targeted drug delivery and site-specific tumor penetration and minimize unwanted systemic toxicity. Therefore, it is vital to understand the critical biological barriers involved in skin cancer therapeutics for the optimal development of the formulations. Various nanocarriers for targeted delivery of chemotherapeutic drugs have been developed and extensively studied to overcome the limitations faced by topical conventional dosage forms. A site-specific vesicular drug delivery system appears to be an attractive strategy in topical drug delivery for the treatment of skin malignancies. In this review, vesicular drug delivery systems, including liposomes, niosomes, ethosomes, and transfersomes in developing novel drug delivery for skin cancer therapeutics, are discussed. Firstly, the prevalence statistics, current treatments, and limitations of convention dosage form for skin cancer treatment are discussed. Then, the common type of nanocarriers involved in the research for skin cancer treatment are summarized. Lastly, the utilization of vesicular drug delivery systems in delivering chemotherapeutics is reviewed and discussed, along with their beneficial aspects over other nanocarriers, safety concerns, and clinical aspects against skin cancer treatment.
Background: Most of the active pharmaceutical ingredients discovered recently in pharmaceutical f... more Background: Most of the active pharmaceutical ingredients discovered recently in pharmaceutical field exhibits poor aqueous solubility that pose major problem in their oral administration. The oral administration of these drugs gets further complicated due to their short bioavailability, inconsistent absorption and inter/intra subject variability. Methods: Pharmaceutical emulsion holds a significant place as a primary choice of oral drug delivery system for lipophilic drugs used in pediatric and geriatric patients. Pharmacokinetic studies on nanoemulsion mediated drugs delivery approach indicates practical feasibility in regards to their clinical translation and commercialization. Results: This review article is to provide an updated understanding on pharmacokinetic and pharmacodynamic features of nanoemulsion delivered via oral, intravenous, topical and nasal route. The article is of huge interest to formulation scientists working on range of lipophilic drug molecules intended to be administered through oral, intravenous, topical and nasal routes for vivid medical benefits.
Teaser: The attractive multifunctionality platform of nanoemulsion has presented smart theranosti... more Teaser: The attractive multifunctionality platform of nanoemulsion has presented smart theranostic role with promising antitumor efficacy and multimodal diagnostic functionalities. Novel targeting nanoemulsion strategy can sense the target to ferry cargo specifically in the cancer microenvironment. Theranostic approach grasps the potential to revolutionize the diagnosis, treatment, and prognosis in cancer, where the novel drug delivery systems hold the possibilities of detecting the disease at an early stage with the instantaneous treatment. Many preclinical approaches of nanoemulsion with entrapped contrast and chemotherapeutic agents documented to act specifically to the tumor microenvironment for diagnosis and therapeutic purposes. However, bringing these theranostic nanoemulsions through preclinical outcomes to the bedside of patients has to cross several fundamental hurdles, including in vivo behavior of the delivery tool, degradation, and clearance from the system, long-term toxicities, etc. Here, in this article, we discussed the recent advancement of nanoemulsion application in the molecular imaging with simultaneous therapeutic efficacy in a single delivery system.
International Journal of Pharmaceutics, Jun 1, 2019
Targeted drug delivery to the brain via intranasal nanoemulsion : Available proof of concept and ... more Targeted drug delivery to the brain via intranasal nanoemulsion : Available proof of concept and existing challenges (Review) , , , , ,
The potentials held by stimuli-responsive polymers in wound dressing have led to the present rese... more The potentials held by stimuli-responsive polymers in wound dressing have led to the present research in formulating a hydrogel base formulation with polymers having pH and thermo-sensitivity. Thus, hyaluronic acid (pH-sensitive polymer), and Pluronic F-127 (thermo-sensitive polymer) with hydroxypropyl methylcellulose (mucoadhesive polymer) were incorporated to obtain an in situ hydrogel containing gentamicin and naringenin (NAR). The optimization of the stimuli-responsive formulation was performed by the Box–Behnken statistical design to acquire variable parameters that influence the gelling temperature and viscosity. Thermo-gravimetric analysis, differential scanning calorimetry, and Fourier-transform infrared spectroscopy were performed to confirm the suitability of incorporating the selected polymers with drugs. The optimized formulations (blank and drug-loaded) were found to possess satisfactory characteristics of gelling temperatures (30–33°C), viscosities (174 ± 3 to 184 ± 4 ...
Oral cancer, particularly squamous cell carcinoma (SCC), has posed a grave challenge to global he... more Oral cancer, particularly squamous cell carcinoma (SCC), has posed a grave challenge to global health due to its high incidence, metastasis, and mortality rates. Despite numerous studies and favorable improvements in the therapeutic strategies over the past few decades, the prognosis of this disease remains dismal. Moreover, several drawbacks are associated with the conventional treatment; including permanent disfigurement and physical impairment that are attributed to surgical intervention, and systemic toxicity that results from aggressive radio- or chemotherapies, which impacts patients’ prognosis and post-treatment quality of life. The highly vascularized, non-keratinized oral mucosa appears as a potential route for cytotoxic drug administration in treating oral cancer. It acts as a non-invasive portal for drug entry targeting the local oral lesions of the early stages of cancer and the systemic metastasis sites of advanced cancer. The absorption of the poorly aqueous-soluble an...
Cancer is associated with a comprehensive burden that significantly affects patient's quality of ... more Cancer is associated with a comprehensive burden that significantly affects patient's quality of life. Even though patients' disease condition is improving following conventional therapies, researchers are studying alternative tools that can penetrate solid tumours to deliver the therapeutics due to issues of developing resistance by the cancer cells. Treating cancer is not the only the goal in cancer therapy; it also includes protecting non-cancerous cells from the toxic effects of anti-cancer agents. Thus, various advanced techniques, such as cell-based drug delivery, bacteria-mediated therapy, and nanoparticles, are devised for site-specific delivery of drugs. One of the novel methods that can be targeted to deliver anti-cancer agents is by utilising genetically modified non-pathogenic bacterial species. This is due to the ability of bacterial species to multiply selectively or non-selectively on tumour cells, resulting in biofilms that leads to disruption of metastasis process. In preclinical studies, this technology has shown significant results in terms of efficacy, and some are currently under investigation. Therefore, researchers have conducted studies on bacteria transporting the anti-cancer drug to targeted tumours. Alternatively, bacterial ghosts and bacterial spores are utilised to deliver anti-cancer drugs. Although in vivo studies of bacteria-mediated cancer therapy have shown successful outcome, further research on bacteria, specifically their targeting mechanism, is required to establish a complete clinical approach in cancer treatment. This review has focused on the up-to-date understanding of bacteria as a therapeutic carrier in the treatment of cancer as an emerging field. bacteria-assisted therapy • cancer treatment • drug delivery • therapeutic carrier for chemotherapy * Manisha Pandey
Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase i... more Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase in prevalence and mortality. Hence, it is a public health issue and a high burden of disease, contributing to the economic burden in its treatment. There are multiple treatment options available for skin cancer, ranging from chemotherapy to surgery. However, these conventional treatment modalities possess several limitations, urging the need for the development of an effective and safe treatment for skin cancer that could provide targeted drug delivery and site-specific tumor penetration and minimize unwanted systemic toxicity. Therefore, it is vital to understand the critical biological barriers involved in skin cancer therapeutics for the optimal development of the formulations. Various nanocarriers for targeted delivery of chemotherapeutic drugs have been developed and extensively studied to overcome the limitations faced by topical conventional dosage forms. A site-specific vesicular ...
A single ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD) that causes inflam... more A single ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD) that causes inflammation of the colonic mucosa at the distal colon and rectum. The mainstay therapy involves anti-inflammatory immunosuppression based on the disease location and severity. The disadvantages of using systemic corticosteroids for UC treatment is the amplified risk of malignancies and infections. Therefore, topical treatments are safer as they have fewer systemic side effects due to less systemic exposure. In this context, pH sensitive and enzymatically triggered hydrogel of pectin (PC) and polyacrylamide (PAM) has been developed to facilitate colon-targeted delivery of budesonide (BUD) for the treatment of UC. The hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), swelling ratio, and drug release. FT-IR spectroscopy confirmed the grafting as well loading of BUD in hydrogel. XRD showed the amorphous nature of hydrogel and increment in cry...
Hidradenitis suppurativa (HS) has been considered an orphan disease with limited treatments avail... more Hidradenitis suppurativa (HS) has been considered an orphan disease with limited treatments available. The available topical treatment for this condition is clindamycin lotion; however, short retention and frequent application are the main setbacks. Thus, the present study aimed to attain an optimized antibacterial in situ spray formulation for the hidradenitis suppurativa skin condition, which gels once in contact with the skin surface at around 37 °C and possesses bioadhesion as well as sustained-release properties of the incorporated drug. Different concentrations of thermo-reversible gelling polymer, Pluronic F-127, were investigated along with the selected bioadhesive polymers, HPMC and SA. The optimized formulation F3 consisting of 18% Pluronic F-127 with 0.2% HPMC and 0.2% SA was characterized based on various physicochemical properties. The gelation temperature of F3 was found to be 29.0 ± 0.50 °C with a gelation time of 1.35 ± 0.40 min and a pH of 5.8. F3 had the viscosity ...
Frontiers in Pharmacology of Neurotransmitters, 2020
Adrenaline and noradrenaline are important catecholamines of the biological system, responsible f... more Adrenaline and noradrenaline are important catecholamines of the biological system, responsible for the regulation of major functions of the body via their action on the brain. This noradrenaline is the chief neurotransmitter of the sympathetic nervous system, whereas adrenaline is an important metabolic hormone, known to play a vital role in the cardiovascular system and a mediator of the fight-or-flight response. These catecholamines act in the system through the membrane-bound GPCRs, adrenergic receptors (ARs). Two major classes of ARs, α-ARs and β-ARs, facilitate a number of functions at central and peripheral sites. There are two subtypes of α-ARs (α1-AR and α2-AR), whereas three different subtypes of β-ARs have been identified-β1-AR, β2-AR, and β3-AR. Based on their role, different AR modulators have been introduced clinically for their therapeutic application. In this chapter, we focus on the pharmacology of the two catecholamines through their action on different ARs within the biosystem B. Gorain
Nanotechnology-Based Targeted Drug Delivery Systems for Lung Cancer, 2019
Abstract Lung cancer, a group of destructive malignant tumors, is a leading cause of new cancer c... more Abstract Lung cancer, a group of destructive malignant tumors, is a leading cause of new cancer cases and cancer-associated deaths. The application of nanoemulsions is an attractive platform for cancer therapy, particularly due to their favorable properties to solubilize hydrophobic chemotherapeutics, thermodynamic stability, biocompatibility, and targetability. A multifunctional role for nanoemulsions could become possible for their submicron dispersed colloids in the continuous phase, which further aids in overcoming biological barriers associated with conventional chemotherapeutic drug delivery to reach the target site of lung cancer. Surface-engineered nanoemulsion with incorporated chemotherapies has the potential to revolutionize lung cancer therapy by tailoring it according to the requirement to target the microenvironment of cancer cells for improved therapy. Several nanoemulsion formulations are in different stages of clinical phases, however, to date, there is no approved nanoemulsion marketed for lung cancer. In this chapter, the authors focus on different approaches to nanoemulsion use for selective and improved lung cancer targeting and emphasize the underlying challenges in lung cancer therapy.
CNS & Neurological Disorders - Drug Targets, 2021
Background:The complication of Alzheimer’s disease (AD) has made the development of its therapeut... more Background:The complication of Alzheimer’s disease (AD) has made the development of its therapeutic a challenging task. Even after decades of research, we have achieved no more than a few years of symptomatic relief. The inability to diagnose the disease early is the major hurdle behind its treatment. Several studies have aimed to identify potential biomarkers that can be detected in body fluids (CSF, blood, urine, etc.) or assessed by neuroimaging (i.e., PET and MRI). However, the clinical implementation of these biomarkers is incomplete as they cannot be validated.Method:This study aimed to overcome the limitation of using artificial intelligence along with technical tools that have been extensively investigated for AD diagnosis. For developing a promising artificial intelligence strategy that can diagnose AD early, it is critical to supervise neuropsychological outcomes and imaging-based readouts with a proper clinical review.Conclusion:Profound knowledge, a large data pool, and ...
Buccal mucosal membrane offers an attractive drug-delivery route to enhance both systemic and loc... more Buccal mucosal membrane offers an attractive drug-delivery route to enhance both systemic and local therapy. This review discusses the benefits and drawbacks of buccal drug delivery, anatomical and physiological aspects of oral mucosa, and various in vitro techniques frequently used for examining buccal drug-delivery systems. The role of mucoadhesive polymers, penetration enhancers, and enzyme inhibitors to circumvent the formulation challenges particularly due to salivary renovation cycle, masticatory effect, and limited absorption area are summarized. Biocompatible mucoadhesive films and patches are favored dosage forms for buccal administration because of flexibility, comfort, lightness, acceptability, capacity to withstand mechanical stress, and customized size. Preparation methods, scale-up process and manufacturing of buccal films are briefed. Ongoing and completed clinical trials of buccal film formulations designed for systemic delivery are tabulated. Polymeric or lipid nano...
Rivastigmine, a reversible cholinesterase inhibitor, is frequently indicated in the management of... more Rivastigmine, a reversible cholinesterase inhibitor, is frequently indicated in the management of demented conditions associated with Alzheimer disease. The major hurdle of delivering this drug through the oral route is its poor bioavailability, which prompted the development of novel delivery approaches for improved efficacy. Due to numerous beneficial properties associated with nanocarriers in the drug delivery system, rivastigmine nanoparticles were fabricated to be administer through the intranasal route. During the development of the nanoparticles, preliminary optimization of processing and formulation parameters was done by the design of an experimental approach. The drug–polymer ratio, stirrer speed, and crosslinking time were fixed as independent variables, to analyze the effect on the entrapment efficiency (% EE) and in vitro drug release of the drug. The formulation (D8) obtained from 23 full factorial designs was further coated using Eudragit EPO to extend the release pat...
Eyesight is one of the most well-deserved blessings, amid all the five senses in the human body. ... more Eyesight is one of the most well-deserved blessings, amid all the five senses in the human body. It captures the raw signals from the outside world to create detailed visual images, granting the ability to witness and gain knowledge about the world. Eyes are exposed directly to the external environment; they are susceptible to the vicissitudes of diseases. The World Health Organization has predicted that the number of individuals affected by eye diseases will rise enormously in the next decades. However, the physical barriers of the eyes and the problems associated with conventional ocular formulations are significant challenges in ophthalmic drug development. This has generated the demand for a sustained ocular drug delivery system, which serves to deliver effective drug concentration at a reduced frequency for consistent therapeutic effect and better patient treatment adherence. Recent advancement in pharmaceutical dosage design has demonstrated that a stimuliresponsive in situ gel system exhibits the favorable characteristics for providing sustained ocular drug delivery and enhanced ocular bioavailability. Stimuli-responsive in situ gels undergo a phase transition (solution-gelation) in response to the ocular environmental temperature, pH, and ions. These stimuli transform the formulation into a gel at the cul de sac to overcome the shortcomings of conventional eye drops, such as rapid nasolacrimal drainage and short contact time with the ocular surface This review highlights the recent successful research outcomes of stimuli-responsive in situ gelling systems in treating in vivo models with glaucoma and various ocular infections. Additionally, it also presents the mechanism, recent development, and safety considerations of stimuli-sensitive in situ gel as the potential sustained ocular delivery system for treating common eye disorders.
Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase i... more Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase in prevalence and mortality. Hence, it is a public health issue and a high burden of disease, contributing to the economic burden in its treatment. There are multiple treatment options available for skin cancer, ranging from chemotherapy to surgery. However, these conventional treatment modalities possess several limitations, urging the need for the development of an effective and safe treatment for skin cancer that could provide targeted drug delivery and site-specific tumor penetration and minimize unwanted systemic toxicity. Therefore, it is vital to understand the critical biological barriers involved in skin cancer therapeutics for the optimal development of the formulations. Various nanocarriers for targeted delivery of chemotherapeutic drugs have been developed and extensively studied to overcome the limitations faced by topical conventional dosage forms. A site-specific vesicular drug delivery system appears to be an attractive strategy in topical drug delivery for the treatment of skin malignancies. In this review, vesicular drug delivery systems, including liposomes, niosomes, ethosomes, and transfersomes in developing novel drug delivery for skin cancer therapeutics, are discussed. Firstly, the prevalence statistics, current treatments, and limitations of convention dosage form for skin cancer treatment are discussed. Then, the common type of nanocarriers involved in the research for skin cancer treatment are summarized. Lastly, the utilization of vesicular drug delivery systems in delivering chemotherapeutics is reviewed and discussed, along with their beneficial aspects over other nanocarriers, safety concerns, and clinical aspects against skin cancer treatment.
Background: Most of the active pharmaceutical ingredients discovered recently in pharmaceutical f... more Background: Most of the active pharmaceutical ingredients discovered recently in pharmaceutical field exhibits poor aqueous solubility that pose major problem in their oral administration. The oral administration of these drugs gets further complicated due to their short bioavailability, inconsistent absorption and inter/intra subject variability. Methods: Pharmaceutical emulsion holds a significant place as a primary choice of oral drug delivery system for lipophilic drugs used in pediatric and geriatric patients. Pharmacokinetic studies on nanoemulsion mediated drugs delivery approach indicates practical feasibility in regards to their clinical translation and commercialization. Results: This review article is to provide an updated understanding on pharmacokinetic and pharmacodynamic features of nanoemulsion delivered via oral, intravenous, topical and nasal route. The article is of huge interest to formulation scientists working on range of lipophilic drug molecules intended to be administered through oral, intravenous, topical and nasal routes for vivid medical benefits.
Teaser: The attractive multifunctionality platform of nanoemulsion has presented smart theranosti... more Teaser: The attractive multifunctionality platform of nanoemulsion has presented smart theranostic role with promising antitumor efficacy and multimodal diagnostic functionalities. Novel targeting nanoemulsion strategy can sense the target to ferry cargo specifically in the cancer microenvironment. Theranostic approach grasps the potential to revolutionize the diagnosis, treatment, and prognosis in cancer, where the novel drug delivery systems hold the possibilities of detecting the disease at an early stage with the instantaneous treatment. Many preclinical approaches of nanoemulsion with entrapped contrast and chemotherapeutic agents documented to act specifically to the tumor microenvironment for diagnosis and therapeutic purposes. However, bringing these theranostic nanoemulsions through preclinical outcomes to the bedside of patients has to cross several fundamental hurdles, including in vivo behavior of the delivery tool, degradation, and clearance from the system, long-term toxicities, etc. Here, in this article, we discussed the recent advancement of nanoemulsion application in the molecular imaging with simultaneous therapeutic efficacy in a single delivery system.
International Journal of Pharmaceutics, Jun 1, 2019
Targeted drug delivery to the brain via intranasal nanoemulsion : Available proof of concept and ... more Targeted drug delivery to the brain via intranasal nanoemulsion : Available proof of concept and existing challenges (Review) , , , , ,
The potentials held by stimuli-responsive polymers in wound dressing have led to the present rese... more The potentials held by stimuli-responsive polymers in wound dressing have led to the present research in formulating a hydrogel base formulation with polymers having pH and thermo-sensitivity. Thus, hyaluronic acid (pH-sensitive polymer), and Pluronic F-127 (thermo-sensitive polymer) with hydroxypropyl methylcellulose (mucoadhesive polymer) were incorporated to obtain an in situ hydrogel containing gentamicin and naringenin (NAR). The optimization of the stimuli-responsive formulation was performed by the Box–Behnken statistical design to acquire variable parameters that influence the gelling temperature and viscosity. Thermo-gravimetric analysis, differential scanning calorimetry, and Fourier-transform infrared spectroscopy were performed to confirm the suitability of incorporating the selected polymers with drugs. The optimized formulations (blank and drug-loaded) were found to possess satisfactory characteristics of gelling temperatures (30–33°C), viscosities (174 ± 3 to 184 ± 4 ...
Oral cancer, particularly squamous cell carcinoma (SCC), has posed a grave challenge to global he... more Oral cancer, particularly squamous cell carcinoma (SCC), has posed a grave challenge to global health due to its high incidence, metastasis, and mortality rates. Despite numerous studies and favorable improvements in the therapeutic strategies over the past few decades, the prognosis of this disease remains dismal. Moreover, several drawbacks are associated with the conventional treatment; including permanent disfigurement and physical impairment that are attributed to surgical intervention, and systemic toxicity that results from aggressive radio- or chemotherapies, which impacts patients’ prognosis and post-treatment quality of life. The highly vascularized, non-keratinized oral mucosa appears as a potential route for cytotoxic drug administration in treating oral cancer. It acts as a non-invasive portal for drug entry targeting the local oral lesions of the early stages of cancer and the systemic metastasis sites of advanced cancer. The absorption of the poorly aqueous-soluble an...
Cancer is associated with a comprehensive burden that significantly affects patient's quality of ... more Cancer is associated with a comprehensive burden that significantly affects patient's quality of life. Even though patients' disease condition is improving following conventional therapies, researchers are studying alternative tools that can penetrate solid tumours to deliver the therapeutics due to issues of developing resistance by the cancer cells. Treating cancer is not the only the goal in cancer therapy; it also includes protecting non-cancerous cells from the toxic effects of anti-cancer agents. Thus, various advanced techniques, such as cell-based drug delivery, bacteria-mediated therapy, and nanoparticles, are devised for site-specific delivery of drugs. One of the novel methods that can be targeted to deliver anti-cancer agents is by utilising genetically modified non-pathogenic bacterial species. This is due to the ability of bacterial species to multiply selectively or non-selectively on tumour cells, resulting in biofilms that leads to disruption of metastasis process. In preclinical studies, this technology has shown significant results in terms of efficacy, and some are currently under investigation. Therefore, researchers have conducted studies on bacteria transporting the anti-cancer drug to targeted tumours. Alternatively, bacterial ghosts and bacterial spores are utilised to deliver anti-cancer drugs. Although in vivo studies of bacteria-mediated cancer therapy have shown successful outcome, further research on bacteria, specifically their targeting mechanism, is required to establish a complete clinical approach in cancer treatment. This review has focused on the up-to-date understanding of bacteria as a therapeutic carrier in the treatment of cancer as an emerging field. bacteria-assisted therapy • cancer treatment • drug delivery • therapeutic carrier for chemotherapy * Manisha Pandey
Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase i... more Skin cancer, one of the most prevalent cancers worldwide, has demonstrated an alarming increase in prevalence and mortality. Hence, it is a public health issue and a high burden of disease, contributing to the economic burden in its treatment. There are multiple treatment options available for skin cancer, ranging from chemotherapy to surgery. However, these conventional treatment modalities possess several limitations, urging the need for the development of an effective and safe treatment for skin cancer that could provide targeted drug delivery and site-specific tumor penetration and minimize unwanted systemic toxicity. Therefore, it is vital to understand the critical biological barriers involved in skin cancer therapeutics for the optimal development of the formulations. Various nanocarriers for targeted delivery of chemotherapeutic drugs have been developed and extensively studied to overcome the limitations faced by topical conventional dosage forms. A site-specific vesicular ...
A single ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD) that causes inflam... more A single ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD) that causes inflammation of the colonic mucosa at the distal colon and rectum. The mainstay therapy involves anti-inflammatory immunosuppression based on the disease location and severity. The disadvantages of using systemic corticosteroids for UC treatment is the amplified risk of malignancies and infections. Therefore, topical treatments are safer as they have fewer systemic side effects due to less systemic exposure. In this context, pH sensitive and enzymatically triggered hydrogel of pectin (PC) and polyacrylamide (PAM) has been developed to facilitate colon-targeted delivery of budesonide (BUD) for the treatment of UC. The hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), swelling ratio, and drug release. FT-IR spectroscopy confirmed the grafting as well loading of BUD in hydrogel. XRD showed the amorphous nature of hydrogel and increment in cry...
Hidradenitis suppurativa (HS) has been considered an orphan disease with limited treatments avail... more Hidradenitis suppurativa (HS) has been considered an orphan disease with limited treatments available. The available topical treatment for this condition is clindamycin lotion; however, short retention and frequent application are the main setbacks. Thus, the present study aimed to attain an optimized antibacterial in situ spray formulation for the hidradenitis suppurativa skin condition, which gels once in contact with the skin surface at around 37 °C and possesses bioadhesion as well as sustained-release properties of the incorporated drug. Different concentrations of thermo-reversible gelling polymer, Pluronic F-127, were investigated along with the selected bioadhesive polymers, HPMC and SA. The optimized formulation F3 consisting of 18% Pluronic F-127 with 0.2% HPMC and 0.2% SA was characterized based on various physicochemical properties. The gelation temperature of F3 was found to be 29.0 ± 0.50 °C with a gelation time of 1.35 ± 0.40 min and a pH of 5.8. F3 had the viscosity ...
Frontiers in Pharmacology of Neurotransmitters, 2020
Adrenaline and noradrenaline are important catecholamines of the biological system, responsible f... more Adrenaline and noradrenaline are important catecholamines of the biological system, responsible for the regulation of major functions of the body via their action on the brain. This noradrenaline is the chief neurotransmitter of the sympathetic nervous system, whereas adrenaline is an important metabolic hormone, known to play a vital role in the cardiovascular system and a mediator of the fight-or-flight response. These catecholamines act in the system through the membrane-bound GPCRs, adrenergic receptors (ARs). Two major classes of ARs, α-ARs and β-ARs, facilitate a number of functions at central and peripheral sites. There are two subtypes of α-ARs (α1-AR and α2-AR), whereas three different subtypes of β-ARs have been identified-β1-AR, β2-AR, and β3-AR. Based on their role, different AR modulators have been introduced clinically for their therapeutic application. In this chapter, we focus on the pharmacology of the two catecholamines through their action on different ARs within the biosystem B. Gorain
Nanotechnology-Based Targeted Drug Delivery Systems for Lung Cancer, 2019
Abstract Lung cancer, a group of destructive malignant tumors, is a leading cause of new cancer c... more Abstract Lung cancer, a group of destructive malignant tumors, is a leading cause of new cancer cases and cancer-associated deaths. The application of nanoemulsions is an attractive platform for cancer therapy, particularly due to their favorable properties to solubilize hydrophobic chemotherapeutics, thermodynamic stability, biocompatibility, and targetability. A multifunctional role for nanoemulsions could become possible for their submicron dispersed colloids in the continuous phase, which further aids in overcoming biological barriers associated with conventional chemotherapeutic drug delivery to reach the target site of lung cancer. Surface-engineered nanoemulsion with incorporated chemotherapies has the potential to revolutionize lung cancer therapy by tailoring it according to the requirement to target the microenvironment of cancer cells for improved therapy. Several nanoemulsion formulations are in different stages of clinical phases, however, to date, there is no approved nanoemulsion marketed for lung cancer. In this chapter, the authors focus on different approaches to nanoemulsion use for selective and improved lung cancer targeting and emphasize the underlying challenges in lung cancer therapy.
CNS & Neurological Disorders - Drug Targets, 2021
Background:The complication of Alzheimer’s disease (AD) has made the development of its therapeut... more Background:The complication of Alzheimer’s disease (AD) has made the development of its therapeutic a challenging task. Even after decades of research, we have achieved no more than a few years of symptomatic relief. The inability to diagnose the disease early is the major hurdle behind its treatment. Several studies have aimed to identify potential biomarkers that can be detected in body fluids (CSF, blood, urine, etc.) or assessed by neuroimaging (i.e., PET and MRI). However, the clinical implementation of these biomarkers is incomplete as they cannot be validated.Method:This study aimed to overcome the limitation of using artificial intelligence along with technical tools that have been extensively investigated for AD diagnosis. For developing a promising artificial intelligence strategy that can diagnose AD early, it is critical to supervise neuropsychological outcomes and imaging-based readouts with a proper clinical review.Conclusion:Profound knowledge, a large data pool, and ...
Buccal mucosal membrane offers an attractive drug-delivery route to enhance both systemic and loc... more Buccal mucosal membrane offers an attractive drug-delivery route to enhance both systemic and local therapy. This review discusses the benefits and drawbacks of buccal drug delivery, anatomical and physiological aspects of oral mucosa, and various in vitro techniques frequently used for examining buccal drug-delivery systems. The role of mucoadhesive polymers, penetration enhancers, and enzyme inhibitors to circumvent the formulation challenges particularly due to salivary renovation cycle, masticatory effect, and limited absorption area are summarized. Biocompatible mucoadhesive films and patches are favored dosage forms for buccal administration because of flexibility, comfort, lightness, acceptability, capacity to withstand mechanical stress, and customized size. Preparation methods, scale-up process and manufacturing of buccal films are briefed. Ongoing and completed clinical trials of buccal film formulations designed for systemic delivery are tabulated. Polymeric or lipid nano...
Rivastigmine, a reversible cholinesterase inhibitor, is frequently indicated in the management of... more Rivastigmine, a reversible cholinesterase inhibitor, is frequently indicated in the management of demented conditions associated with Alzheimer disease. The major hurdle of delivering this drug through the oral route is its poor bioavailability, which prompted the development of novel delivery approaches for improved efficacy. Due to numerous beneficial properties associated with nanocarriers in the drug delivery system, rivastigmine nanoparticles were fabricated to be administer through the intranasal route. During the development of the nanoparticles, preliminary optimization of processing and formulation parameters was done by the design of an experimental approach. The drug–polymer ratio, stirrer speed, and crosslinking time were fixed as independent variables, to analyze the effect on the entrapment efficiency (% EE) and in vitro drug release of the drug. The formulation (D8) obtained from 23 full factorial designs was further coated using Eudragit EPO to extend the release pat...
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