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result(s) for
"Bhattacharyya, Anusuya"
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Recent advances in molecular pathways and therapeutic implications targeting neuroinflammation for Alzheimer’s disease
by
Dhapola, Rishika
,
Sarma, Phulen
,
Medhi, Bikash
in
AKT protein
,
Allergology
,
Alzheimer Disease - drug therapy
2021
Alzheimer’s disease (AD) is a major contributor of dementia leading to the degeneration of neurons in the brain with major symptoms like loss of memory and learning. Many evidences suggest the involvement of neuroinflammation in the pathology of AD. Cytokines including TNF-α and IL-6 are also found increasing the BACE1 activity and expression of NFκB resulting in generation of Aβ in AD brain. Following the interaction of Aβ with microglia and astrocytes, other inflammatory molecules also get translocated to the site of inflammation by chemotaxis and exaggerate neuroinflammation. Various pathways like NFκB, p38 MAPK, Akt/mTOR, caspase, nitric oxide and COX trigger microglia to release inflammatory cytokines. PPARγ agonists like pioglitazone increases the phagocytosis of Aβ and reduces inflammatory cytokine IL-1β. Celecoxib and roficoxib like selective COX-2 inhibitors also ameliorate neuroinflammation. Non-selective COX inhibitor indomethacin is also potent inhibitor of inflammatory mediators released from microglia. Mitophagy process is considered quite helpful in reducing inflammation due to microglia as it promotes the phagocytosis of over activated microglial cells and other inflammatory cells. Mitophagy induction is also beneficial in the removal of damaged mitochondria and reduction of infiltration of inflammatory molecules at the site of accumulation of the damaged mitochondria. Targeting these pathways and eventually ameliorating the activation of microglia can mitigate neuroinflammation and come out as a better therapeutic option for the treatment of Alzheimer’s disease.
Journal Article
Serum ferritin as a predictive biomarker in COVID-19. A systematic review, meta-analysis and meta-regression analysis
2022
Ferritin is a known inflammatory biomarker in COVID-19. However, many factors and co-morbidities can confound the level of serum ferritin. This current metaanalysis evaluates serum ferritin level in different severity levels in COVID-19. Studies evaluating serum ferritin level in different clinical contexts (COVID-19 vs. control, mild to moderate vs. severe to critical, non-survivor vs. survivor, organ involvement, ICU and mechanical ventilation requirement) were included (total 9 literature databases searched). Metaanalysis and metaregression was carried out using metaphor “R” package. Compared to control (COVID-19 negative), higher ferritin levels were found among the COVID-19 patients [SMD −0.889 (95% C.I. −1.201, −0.577), I2 = 85%]. Severe to critical COVID-19 patients showed higher ferritin levels compared to mild to moderate COVID-19 patients [SMD 0.882 (0.738, 1.026), I2 = 85%]. In meta-regression, high heterogeneity was observed could be attributed to difference in “mean age”, and “percentage of population with concomitant co-morbidities”. Non-survivors had higher serum ferritin level compared to survivors [SMD 0.992 (0.672, 1.172), I2 = 92.33%]. In meta-regression, high heterogeneity observed could be attributed to difference in “mean age” and “percentage of male sex”. Patients requiring ICU [SMD 0.674 (0.515 to 0.833), I2 = 80%] and mechanical ventilation [SMD 0.430 (0.258, 0.602), I2 = 32%] had higher serum ferritin levels compared to those who didn't. To conclude, serum ferritin level may serve as an important biomarker which can aid in COVID-19 management. However, presence of other co-morbid conditions/confounders warrants cautious interpretation.
•Higher ferritin levels were found among COVID-19 patients (compared to control).•Among COVID-19 patients, higher ferritin level was observed among patients with more severe disease or unfavorable outcome.•However, many confounders can potentially influence the level of serum ferritin e.g. age, sex and concomitant co-morbidity.
Journal Article
nCoV-2019 infection induced neurological outcome and manifestation, linking its historical ancestor SARS-CoV and MERS-CoV: a systematic review and meta-analysis
2021
The first systematic review and meta-analysis to help clinician to identify early signs and symptoms of neurological manifestation in COVID-19 positive patients which will further help in early management of patients. Present systematic review and meta-analysis aimed to discuss the prevalence of neurological involvement of the 2019-nCoV patients and assess the symptomatic trend of events as compared to the 2002 “SARS” and 2012 “MERS” pandemics. The articles were systematically screened through several search engine and databases. The articles published or in preprint were included in the study till 15th May 2020. The systematic review done as per the published literatures which included 31 cross sectional, observational studies and case reports which revealed neurological signs and symptoms in SARS-COV-2 disease. For meta-analysis, we included 09 observational and cross-sectional studies which included COVID-19 positive patients and assessed the predominance of various neurological signs and symptoms in COVID-19 patients with relation to SARS-2002 and MERS-2012. Data was analyzed by using the “
MedCalc
” Statistical Software version 19.2.6 and reported as pooled prevalence. Standard I
2
test was used to analyze the heterogeneity. We have collected and screened about a total 2615articles, finally we have included 31articles for the systematic review and 09 for meta-analysis as per the inclusion/exclusion criteria. The analysis was made as per the prevalence rate of neurological symptoms in COVID-19 positive patients. The cumulative neurological outcome of SARS-2002 and MERS-2012 was assessed to get the trends which was further tried to correlate the events with the current pandemic. During the analysis severity and outcome of neurological manifestations range from simple headache to vague non-focal complaints to severe neurologic impairment associated with seizure or meningitis. Central and peripheral nervous system (CNS/PNS) manifestations were seen during the SARS-2002, MERS-2012 and COVID-19. However, none of the publication had primary or secondary objectives of searching neurological manifestations in the COVID-19 patients and the pathogenic mechanism which will subsequently strengthen the importance to start more prospective clinical trials. The prevalence of neurological signs and symptoms were taken as primary objective. Thereafter, the prevalence of each CNS/PNS symptoms was categorized and their prevalence studied. The selection of Bagheri et al., 2020 may be discussed because they have done the cross-sectional study with the neurological finding and correlated the data with prevalence of the COVID-19 positive patients. The proportion of patients presenting with neurological outcome and clinical/PCR positivity were done. We had searched and followed all the possible online/web source, still the data collection process may remain a limitation of work due to addition of several publications on COVID-19 every day. Due to lack of data of SARS-CoV and MERS-CoV, we have included the case reports, MERS and COVID-19 in CNS/PNS manifestations.
Journal Article
Systematic review and meta-analysis of effectiveness and safety of favipiravir in the management of novel coronavirus (COVID-19) patients
by
Sarma, Phulen
,
Medhi, Bikash
,
Prakash, Ajay
in
Amides - adverse effects
,
Amides - therapeutic use
,
Antiretroviral drugs
2020
Multiple options are being tried for the management of 2019-nCoV infection since its pandemic started. Favipiravir (FPV) is one of drugs, which is also being tried for the management of 2019-nCoV infection. The present study aimed to evaluate the efficacy and safety of FPV in published literature. Comparative randomized or nonrandomized controlled clinical trials comparing FPV to the standard of care (SOC)/control or other antiviral agent/combinations were included. A total of 12 databases were searched and identify four studies which were further used for final analysis. The data analysis was done as pooled prevalence using a random effect model by \"RevMan manager version 5.4.1 and \"R\" software. The point estimate, odds ratio (OR) with 95% confidence interval (CI) was calculated for dichotomous data. In the present study, the marginal beneficial effect was seen in the FPV group in overall clinical improvement comparison to SOC/control, i.e., (4 studies, log OR [95% CI] (−0.19 [−0.51, 0.13]). However, in all other outcomes, it was found to be comparable to the SOC/control arm namely \"clinical improvement on day 7-10\" (3 studies, OR [95% CI] 1.63 [1.07, 2.48]) while \"clinical improvement on day 10-14\" (3 studies, OR [95% CI] 1.37 [0.24, 7.82]) and viral negativity was seen (4 studies, OR [95% CI] 1.91 [0.91, 4.01]). No difference in efficacy was found between FPV versus lopinavir/ritonavir or arbidol groups. Regarding adverse effects, except for the occurrence of rash (higher in the FPV group), safety was comparable to SOC. In our study, there was a marginal difference between the FPV and the SOC arm in terms of \"clinical improvement\" on day 7-10 or 10-14, and \"virological negativity\" on day 10-14.\" However, some benefit was observed in a few studies, but it was also comparable to the control drugs or SOC.
Journal Article
Concomitant multiple subretinal cysticerci in neurocysticercosis
by
Narang, Subina
,
Kaur, Ravinder
,
Bhattacharyya, Anusuya
in
Cysticercosis
,
Dispatches
,
Optic nerve
2023
We present a unique case of asymptomatic NCC that was accidently diagnosed on radiological investigations after a road traffic accident. An Ophthalmologic consult was sought to rule out intraocular or optic nerve cysticercosis. Fundoscopy showed multiple white-pale yellow lesions in the right eye which on ultrasonography confirmed cyst lined by a cyst wall consistent with subretinal cysticercosis. The patient was treated with diode laser photocoagulation. A high index of suspicion is required to diagnose NCCin endemic areas. In the right eye which on ultrasonography confirmed cyst lined by a cyst wall consistent with subretinal cysticercosis. The patient was treated with diode laser photocoagulation.
Journal Article
Efficacy and safety of steroid therapy in COVID-19: A rapid systematic review and Meta-analysis
by
Sarma, Phulen
,
Prajapat, Manisha
,
Sharma, Saurabh
in
Coronaviruses
,
COVID-19
,
COVID-19 Drug Treatment
2020
PURPOSE: Although the use of steroids in the management of COVID-19 has been addressed by a few systematic review and meta-analysis, however, they also used data from \"SARS-CoV\" and \"MERS-CoV.\" Again, most of these studies addressed only one severity category of patients or addressed only one efficacy endpoint (mortality). In this context, we conducted this meta-analysis to evaluate the efficacy and safety of steroid therapy among all severity categories of patients with COVID-19 (mild to moderate and severe to critical category) in terms of \"mortality,\" \"requirement of mechanical ventilation,\" \"requirement of ICU\" and clinical cure parameters.
METHODS: 11 databases were screened. Only randomized controlled trials (RCTs) or high quality (on the basis of risk of bias analysis) comparative-observational studies were included in the analysis. RevMan5.3 was used for the meta-analysis.
RESULTS: A total of 15 studies (3 RCT and 12 comparative-observational studies) were included. In the mechanically-ventilated COVID-19 population, treatment with dexamethasone showed significant protection against mortality (single study). Among severe and critically ill combined population, steroid administration was significantly associated with lowered mortality (risk ratio [RR] 0.83 [0.76-0.910]), lowered requirement of mechanical ventilation (RR 0.59 [0.51-0.69]), decreased requirement of intensive care unit (ICU) (RR 0.62 [0.45-0.86]), lowered length of ICU stay (single-study) and decreased duration of mechanical ventilation (two-studies). In mild to moderate population, steroid treatment was associated with a higher \"duration of hospital stay,\" while no difference was seen in other domains. In patients at risk of progression to \"acute respiratory distress syndrome,\" steroid administration was associated with \"reduced requirement of mechanical ventilation\" (single-study).
CONCLUSION: This study guides the use of steroid across patients with different severity categories of COVID-19. Among mechanically ventilated patients, steroid therapy may be beneficial in terms of reduced mortality. Among \"severe and critical\" patients; steroid therapy was associated with lowered mortality, decreased requirement of mechanical ventilation, and ICU. However, no benefit was observed in \"mild to moderate\" population. To conclude, among properly selected patient populations (based-upon clinical severity and biomarker status), steroid administration may prove beneficial in patients with COVID-19.
Journal Article
Endogenous endophthalmitis due to Staphylococcus aureus in a lactating woman
by
Dogra, Mangat
,
Singh, Simar
,
Dogra, Mohit
in
Anti-Bacterial Agents - therapeutic use
,
bacterial endophthalmitis
,
Care and treatment
2020
Endogenous endophthalmitis (EE) is a rare but fulminant intraocular infection that needs prompt recognition and management. Bacteria are the commonest causative organisms and they may colonize the eye secondary to hematogenous spread from a focus anywhere in the body. EE in the peripartum period is an infrequent occurrence with no cases reported to occur secondary to a peurperal mastitis. We report a case of EE due to Staphylococcus aureous in a lactating female and describe its clinical presentation and management.
Journal Article
Yogic Neti-Kriya Using Povidone Iodine: Can it have a Preventive Role Against SARS-CoV-2 Infection Gateway?
by
Sarma, Phulen
,
Prajapat, Manisha
,
Sharma, Saurabh
in
Antimicrobial agents
,
Asymptomatic
,
COVID-19
2022
During this COVID-19 pandemic, except steroid, none of the therapeutic measures have showed any evidence of efficacy. Traditionally jala-neti using lukewarm salted water remains a yogic way of maintaining upper airway hygiene. Saline irrigation decreases the concentration of inflammatory mediators (e.g. histamine, leukotriene etc.) in nasal secretions, reduces the severity and frequency of sinusitis, reduce need of antibiotic therapy and restores competency of nasal mucosa. Jala-neti is an integral part of six cleansing techniques of yogic kriyas practised in India since thousands of years. Jala-neti can clean the upper airways, prevents colonization of infectious agents, removes foreign bodies, prevents stasis of mucous and subsequently enhances the drainage of paranasal sinuses and maintain health. Regular practice of Jala neti improves nasal symptoms and overall health status of patients with sinusitis. Jala-neti sample can even be used for COVID-19 diagnosis. Povidone iodine (PVP-I) has been utilized as a time tested antimicrobial agent with broad spectrum coverage against wide range of bacteria and viruses. Anti-SARS-CoV-2 action of PVP-I was seen at a concentration as low as 0.45%. PVP-I is generally well tolerated upto 5%, however nasal ciliotoxicity is reported at this concentration, however, this toxicity is not reported with lower concentrations(1.25% and 0.5%). So, theoretically, by using neti-kriya with povidone iodine (0.5–1%) as irrigation solution can combine and enhance the protection against COVID-19 and this can be an important armor in the fight against COVID-19. However, this hypothesis needs to be validated in real life clinical trial scenario before implementing.
Journal Article