Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 37
Filter
Add more filters

Country/Region as subject
Publication year range
1.
Nature ; 628(8009): 835-843, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38600381

ABSTRACT

Severe influenza A virus (IAV) infections can result in hyper-inflammation, lung injury and acute respiratory distress syndrome1-5 (ARDS), for which there are no effective pharmacological therapies. Necroptosis is an attractive entry point for therapeutic intervention in ARDS and related inflammatory conditions because it drives pathogenic lung inflammation and lethality during severe IAV infection6-8 and can potentially be targeted by receptor interacting protein kinase 3 (RIPK3) inhibitors. Here we show that a newly developed RIPK3 inhibitor, UH15-38, potently and selectively blocked IAV-triggered necroptosis in alveolar epithelial cells in vivo. UH15-38 ameliorated lung inflammation and prevented mortality following infection with laboratory-adapted and pandemic strains of IAV, without compromising antiviral adaptive immune responses or impeding viral clearance. UH15-38 displayed robust therapeutic efficacy even when administered late in the course of infection, suggesting that RIPK3 blockade may provide clinical benefit in patients with IAV-driven ARDS and other hyper-inflammatory pathologies.


Subject(s)
Lung Injury , Necroptosis , Orthomyxoviridae Infections , Protein Kinase Inhibitors , Receptor-Interacting Protein Serine-Threonine Kinases , Animals , Female , Humans , Male , Mice , Alveolar Epithelial Cells/pathology , Alveolar Epithelial Cells/drug effects , Alveolar Epithelial Cells/virology , Alveolar Epithelial Cells/metabolism , Influenza A virus/classification , Influenza A virus/drug effects , Influenza A virus/immunology , Influenza A virus/pathogenicity , Lung Injury/complications , Lung Injury/pathology , Lung Injury/prevention & control , Lung Injury/virology , Mice, Inbred C57BL , Necroptosis/drug effects , Orthomyxoviridae Infections/complications , Orthomyxoviridae Infections/drug therapy , Orthomyxoviridae Infections/immunology , Orthomyxoviridae Infections/mortality , Orthomyxoviridae Infections/virology , Protein Kinase Inhibitors/administration & dosage , Protein Kinase Inhibitors/pharmacology , Protein Kinase Inhibitors/therapeutic use , Receptor-Interacting Protein Serine-Threonine Kinases/metabolism , Receptor-Interacting Protein Serine-Threonine Kinases/antagonists & inhibitors , Respiratory Distress Syndrome/complications , Respiratory Distress Syndrome/pathology , Respiratory Distress Syndrome/prevention & control , Respiratory Distress Syndrome/virology
2.
Int J Mol Sci ; 22(20)2021 Oct 11.
Article in English | MEDLINE | ID: mdl-34681611

ABSTRACT

The herbal plant Angelica gigas (A. gigas) has been used in traditional medicine in East Asian countries, and its chemical components are reported to have many pharmacological effects. In this study, we showed that a bioactive ingredient of A. gigas modulates the functional activity of macrophages and investigated its effect on inflammation using a sepsis model. Among 12 different compounds derived from A. gigas, decursinol angelate (DA) was identified as the most effective in suppressing the induction of TNF-α and IL-6 in murine macrophages. When mice were infected with a lethal dose of methicillin-resistant Staphylococcus aureus (MRSA), DA treatment improved the mortality and bacteremia, and attenuated the cytokine storm, which was associated with decreased CD38+ macrophage populations in the blood and liver. In vitro studies revealed that DA inhibited the functional activation of macrophages in the expression of pro-inflammatory mediators in response to microbial infection, while promoting the bacterial killing ability with an increased production of reactive oxygen species. Mechanistically, DA treatment attenuated the NF-κB and Akt signaling pathways. Intriguingly, ectopic expression of an active mutant of IKK2 released the inhibition of TNF-α production by the DA treatment, whereas the inhibition of Akt resulted in enhanced ROS production. Taken together, our experimental evidence demonstrated that DA modulates the functional activities of pro-inflammatory macrophages and that DA could be a potential therapeutic agent in the management of sepsis.


Subject(s)
Benzopyrans/pharmacology , Butyrates/pharmacology , Macrophages/drug effects , Methicillin-Resistant Staphylococcus aureus/pathogenicity , Sepsis/pathology , Angelica/chemistry , Angelica/metabolism , Animals , Benzopyrans/chemistry , Butyrates/chemistry , Disease Models, Animal , Interleukin-6/metabolism , Kaplan-Meier Estimate , Lipopolysaccharides/pharmacology , Macrophages/cytology , Macrophages/metabolism , Mice , Mice, Inbred C57BL , NF-kappa B/metabolism , Proto-Oncogene Proteins c-akt/metabolism , RAW 264.7 Cells , Reactive Oxygen Species/metabolism , Sepsis/microbiology , Sepsis/mortality , Signal Transduction/drug effects , Tumor Necrosis Factor-alpha/metabolism
3.
BMC Psychiatry ; 20(1): 491, 2020 10 06.
Article in English | MEDLINE | ID: mdl-33023563

ABSTRACT

BACKGROUND: COVID-19 pandemic has created unprecedented health and economic impact. Psychological stress, anxiety and depression are affecting not only COVID-19 patients but also health professionals, and general population. Fear of contracting COVID-19, forced restrictive social measures, and economic hardship are causing mental trauma. Nepal is a developing country from South Asia where the COVID-19 pandemic is still evolving. This online survey has been carried out to understand impact of COVID- 19 on mental health of Nepalese community dwellers. METHODS: The COVID-19 Peritraumatic Distress Index (CPDI) questionnaire adapted from the Shanghai Mental Health Centre was used for online data collection from 11 April-17 May 2020. Collected data were extracted to Microsoft excel-13 and imported and analyzed using SPSS (Statistical Package for Social Sciences) version-22. An initial univariate analysis was conducted for all variables to assess the distribution. Logistic regression analyses were done to estimate the odds ratios of relevant predicting variables. RESULTS: A total of 410 participants completed the self-rated questionnaires. Mean age of study participants was 34.8 ± 11.7 years with male preponderance. 88.5% of the respondents were not in distress (score less than 28) while, 11% had mild to moderate distress and 0.5% had severe distress. The prevalence of distress is higher among age group > 45 years, female gender, and post-secondary education group. Health professional were more likely to get distressed. Respondents with post-secondary education had higher odds (OR = 3.32; p = 0.020) of developing distress as compared to respondents with secondary education or lower. CONCLUSION: There is lower rate of psychological distress in city dwellers and people with low education. Adequate intervention and evaluation into mental health awareness, and psychosocial support focused primarily on health care workers, female and elderly individuals is necessary.


Subject(s)
Betacoronavirus , Coronavirus Infections , Pandemics , Pneumonia, Viral , Psychological Distress , Stress, Psychological/epidemiology , Adult , COVID-19 , Female , Humans , Male , Middle Aged , Nepal/epidemiology , Prevalence , SARS-CoV-2 , Socioeconomic Factors , Stress, Psychological/psychology , Surveys and Questionnaires
4.
Biochem Biophys Res Commun ; 450(4): 1696-701, 2014 Aug 08.
Article in English | MEDLINE | ID: mdl-25063025

ABSTRACT

Tumor-infiltrating macrophages are potential candidates for cancer immunotherapy. However, the detailed molecular mechanism underlying macrophage infiltration into tumors is poorly understood. Based on our previous finding that plasminogen activator inhibitor-1 (PAI-1) enhances vitronectin-dependent migration of macrophages, we investigated the potential role of PAI-1 in macrophage invasion into melanoma. Experimental evidence obtained from spheroid confrontation assay clearly showed that PAI-1 overexpression significantly enhanced the invasion of RAW 264.7 cells into B16F10 melanoma. We further demonstrated that PAI-1 induces phosphorylation of focal adhesion kinase (FAK) at Tyr(925), which, in turn, mediated the invasion of macrophages into the melanoma. This work further illustrates that low-density lipoprotein receptor related-protein 1 (LRP1) is essential for PAI-1-mediated FAK phosphorylation and macrophage invasion into melanoma. In conclusion, our study demonstrates a novel role of PAI-1 in macrophage invasion into melanoma and provides insights into the underlying molecular mechanism.


Subject(s)
Focal Adhesion Protein-Tyrosine Kinases/metabolism , Macrophages/pathology , Melanoma, Experimental/pathology , Plasminogen Activator Inhibitor 1/physiology , Tyrosine/metabolism , Animals , Base Sequence , Cell Line , DNA Primers , Focal Adhesion Protein-Tyrosine Kinases/chemistry , Low Density Lipoprotein Receptor-Related Protein-1 , Melanoma, Experimental/enzymology , Mice , Phosphorylation , Receptors, LDL/metabolism , Tumor Suppressor Proteins/metabolism
5.
Ann Med Surg (Lond) ; 86(4): 2352-2356, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38576951

ABSTRACT

Introduction and importance: Intracranial osteochondroma is rare, presenting diagnostic challenges due to overlapping imaging findings with other pathologies. This case report highlights the significance of considering osteochondroma in calcified tumour differentials near bone. Case presentation: A 34-year-old man with vision deterioration and headaches had an MRI revealing a suprasellar lesion. Intraoperatively, a bony hard tumour was partially resected. Subsequent computed tomography (CT) confirmed a calcified mass contiguous with the posterior clinoid. Clinical discussion: Reviewing 28 cases, skull base osteochondromas were common, with differential diagnoses including craniopharyngioma and meningioma. Surgical decision-making involved balancing complete resection for convexity and falx cases versus partial resection for skull base tumours due to proximity to critical structures. Conclusion: Intracranial osteochondroma poses diagnostic challenges, especially near bone. Tailored surgical approaches are vital, with complete resection yielding good outcomes for convexity and falx cases. Close follow-up is crucial for monitoring recurrences and complications.

6.
Ann Med Surg (Lond) ; 86(8): 4410-4415, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39118692

ABSTRACT

Background and objectives: Gallstone disease (GD) is a prevalent health issue globally, particularly in developed nations, and has notable associations with cardiovascular disease (CVD). This prospective observational cross-sectional study aimed to investigate the association between gallstone disease and carotid intima-media thickness (CIMT), a marker of carotid atherosclerosis, in a tertiary care setting. Method: Conducted at a tertiary care center, the study included 96 participants (48 with gallstone disease and 48 age and sex-matched controls). Data collection involved demographic information, BMI calculation, abdominal ultrasonography for gallstone detection, and carotid ultrasonography for CIMT measurement. Statistical analysis was performed using SPSS version 26. Results: The study revealed higher CIMT values in GD patients compared to controls (P<0.001). Additionally, a positive correlation was observed between CIMT and age (r=0.450, P<0.001) and BMI (r=0.550, P<0.001). The Cohen's d-test indicated a clinically significant difference in CIMT between GD patients and controls (d=1.47). Conclusion: This study revealed a significant association between gallstone disease and elevated CIMT, correlating with higher BMI indicating a potential link between gallstone disease and increased risk of carotid atherosclerosis. These findings highlight the importance of assessing cardiovascular risk in patients with gallstone disease, highlighting the potential utility of carotid ultrasonography as a non-invasive screening tool. Early intervention strategies may be warranted to mitigate cardiovascular risks associated with gallstone disease.

7.
Ann Med Surg (Lond) ; 86(6): 3249-3254, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38846812

ABSTRACT

Background and objective: Benign prostatic hyperplasia manifests as lower urinary tract symptoms (LUTS) and prostate gland enlargement, leading to bladder outlet obstruction with consequent structural and functional impacts on the bladder. Urodynamic studies are resource-intensive and invasive. Detrusor wall thickness (DWT) assessment offers a cost-effective, reproducible alternative for evaluating LUTS severity in males with bladder outlet obstruction, utilizing ultrasonographic examination. Methods: This prospective cross-sectional study, conducted at a tertiary care center from May 2023 to January 2024, included 171 patients with LUTS who underwent transabdominal ultrasound for DWT measurements. LUTS severity, assessed using International Prostate Symptom Scores (IPSS) classified participants into mild and moderate-to-severe symptom groups. Pearson's correlation coefficient assessed the association between DWT and IPSS, and an independent sample t-test compared means, using a significance level of 5% (P-value ≤0.05). Results: This study involved participants aged 65.01±11.55 years with an IPSS score ranging from 1 to 35, with a mean for mild and moderate-to-severe symptom groups were 4±2.12 and 15.93±6.74, respectively. DWT mean of 1.64±0.38 mm for mild, and 2.4±0.43 mm for moderate to severe symptoms. Pearson's correlation (r=0.697, n=171, P<0.001) indicated a strong DWT-LUTS correlation and a significant DWT mean difference between mild and moderate-to-severe symptom groups was found via an independent t-test (P<0.001, 95% CI: -0.8970 to -0.6414). Conclusion: The study establishes the value of transabdominal ultrasound-detected DWT as a cost-effective, noninvasive, and reproducible tool for assessing LUTS severity in males with benign prostatic hyperplasia.

8.
Ann Med Surg (Lond) ; 86(8): 4793-4798, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39118725

ABSTRACT

Introduction and importance: Brain abscess (BA) is a pyogenic infection of the brain parenchyma caused by various organisms. Multiple BAs are uncommon in neonates, and Candida albicans as a causative agent is very rare. If left untreated, BAs are invariably fatal. Early diagnosis, prompt surgical intervention, simultaneous eradication of the primary source, and high-dose intravenous antibiotics decrease the incidence of morbidity and mortality. Case presentation: A 20-day-old newborn, delivered normally at term with a full APGAR score, presented with a 5-day history of fever, decreased activity, jaundice, and seizures. Imaging identified multiple cerebral cysts, diagnosed as multiple cerebral abscesses. Treatment involved intraoperative USG-guided burr-hole drainage, followed by a 6-week antifungal therapy course. C. albicans was found to be the causative organism following microscopic examination and culture of the pus. Clinical discussion: This literature highlights the rarity of fungal involvement in multiple cerebral abscesses in neonates. Managing such cases is very challenging, as the presentation may mimic bacterial infections. The importance of considering fungi as a causative agent in treatment decisions is crucial. Conclusion: Multiple BAs of fungal origin are extremely rare. Early detection and management of cases can reduce mortality among neonates.

9.
Ann Med Surg (Lond) ; 86(2): 1066-1071, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38333269

ABSTRACT

Introduction: The incidence of chronic subdural haematoma (cSDH) is relatively high among the elderly population. Other known risk factors for cSDH include male sex, dependency on anti-platelet or anticoagulant medication, and chronic alcoholism. Although, the standard mode of treatment for cSDH is surgery, embolization of the middle meningeal artery (MMA), either upfront or as an adjunct to surgical evacuation can be used for the treatment of cSDH. Case presentation: The authors present a case of a 75-year-old female with prior history of posterior-lateral wall myocardial infarction (MI) eight years back presented to our centre with the chief complaints of a gradual onset of cough and headache for 2 months. The patient had no history of trauma, loss of consciousness, seizures, and vomiting. There was no history of diabetes, hypertension, pulmonary tuberculosis, and other chronic illness. Discussion: The concurrent use of anti- platelet drug during a surgical procedure can make the treatment challenging. Endovascular treatment can be a primary treatment modality in such situation. Conclusion: Elimination of blood supply by middle meningeal artery embolization is emerging as a safe, minimally invasive alternative to treat cSDH.

10.
JNMA J Nepal Med Assoc ; 61(258): 123-126, 2023 Feb 01.
Article in English | MEDLINE | ID: mdl-37203977

ABSTRACT

Introduction: Spondylolysis can either be asymptomatic or can cause significant low back pain. It is sometimes associated with the translation of one vertebra over another and is termed spondylolisthesis. The aim of the study was to find out the prevalence of spondylolysis among patients without low back pain in a diagnostic centre. Methods: A descriptive cross-sectional study was carried out in a referral diagnostic centre from 15 December 2018 to 14 December 2021 . Ethical approval was obtained from the Nepal Health Research Council (Reference number: 2903). Images of a computed tomography scan of the abdomen performed for other abdominal causes and without low back pain were reconstructed in the sagittal and coronal plane and evaluated for the presence of spondylolysis and spondylolisthesis in the lumbar spine. Demographic data were taken from the hospital records. Convenience sampling method was used. Point estimate and 95% Confidence Interval were calculated. Results: Among 768 patients without low back pain, spondylolysis was found in 59 (7.68%) (5.80-9.56, 95% Confidence Interval). Spondylolisthesis was found in only 16 (27.1%) individuals with spondylolysis. The majority of spondylolysis cases were encountered in L5 level in 54 (91.53%). The mean age of patients with spondylolysis was 41.9±14.46 years. Male to female ratio was 1:1.18. Conclusions: The prevalence of spondylolysis in our study was found to be similar to other studies done in similar settings. Keywords: low back pain; spondylolisthesis; spondylolysis.


Subject(s)
Low Back Pain , Spondylolisthesis , Spondylolysis , Humans , Male , Female , Adult , Middle Aged , Spondylolisthesis/complications , Spondylolisthesis/diagnostic imaging , Spondylolisthesis/epidemiology , Low Back Pain/diagnosis , Low Back Pain/epidemiology , Cross-Sectional Studies , Spondylolysis/diagnosis , Spondylolysis/diagnostic imaging , Tomography, X-Ray Computed/methods , Lumbar Vertebrae/diagnostic imaging
11.
Ann Med Surg (Lond) ; 85(11): 5690-5694, 2023 Nov.
Article in English | MEDLINE | ID: mdl-37915632

ABSTRACT

Introduction and importance: A subgaleal abscess is a collection of pus in a potential space between the galea aponeurotica and pericranium. De novo subgaleal abscesses are a subset of subgaleal abscesses that develop in the absence of identifiable risk factors such as head trauma or procedures. However, these have rarely been reported in the literature. Case presentation: We present the case of a 65-year-old woman who presented with a headache for two and a half months, followed by swelling of the right parieto-occipital scalp. She denied any history of trauma, procedures, or anticoagulant use. A diagnosis of subgaleal abscess complicated by osteomyelitis and epidural abscess was made after obtaining a computed tomography of the head. Surgical treatment consisting of drainage, debridement, and craniectomy was performed, and the disease was successfully treated with a 6-week course of antibiotics. Clinical discussion: It is uncommon to have a de novo subgaleal abscess with spontaneous osteomyelitis and an epidural abscess as concurrent complications. The symptoms can be subtle, such as chronic headaches which can lead to delayed hospital visits. Computed tomography of the head is sufficient to make a definitive diagnosis. Appropriate antibiotic therapy and surgical intervention are necessary, which may encompass incision, drainage, debridement, and occasionally a craniectomy in order to achieve full resolution. Conclusions: One should be vigilant when evaluating scalp swelling for possible underlying abscesses. Prompt diagnosis and appropriate surgical treatment with adequate antibiotics are preferred treatment options for de novo subgaleal abscesses.

12.
Clin Case Rep ; 11(2): e6925, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36846178

ABSTRACT

Urethral duplication is uncommon with few cases reported in the literature. We report a case in which a patient presented with discharge from proximal part of penis since childhood and recent history of infection. The diagnosis of pre-pubic sinus was made and complete excision of the sinus tract was done.

13.
Front Immunol ; 14: 1165667, 2023.
Article in English | MEDLINE | ID: mdl-37215126

ABSTRACT

Toll-like receptors (TLRs) have a crucial role not only in triggering innate responses against microbes but in orchestrating an appropriate adaptive immunity. However, deregulated activation of TLR signaling leads to chronic inflammatory conditions such as inflammatory bowel disease (IBD). In this study, we evaluated the immunomodulatory potential of a TLR inhibitor in the form of a cell-penetrating peptide using an ulcerative colitis animal model. A peptide derived from the TIR domain of the TLR adaptor molecule TIRAP that was conjugated with a cell-penetrating sequence (cpTLR-i) suppressed the induction of pro-inflammatory cytokines such as TNF-α and IL-1ß in macrophages. In DSS-induced colitis mice, cpTLR-i treatment ameliorated colitis symptoms, colonic tissue damage, and mucosal inflammation. Intriguingly, cpTLR-i attenuated the induction of TNF-α-expressing proinflammatory macrophages while promoting that of regulatory macrophages expressing arginase-1 and reduced type 17 helper T cell (Th17) responses in the inflamed colonic lamina propria. An in vitro study validated that cpTLR-i enhanced the differentiation of monocyte-driven macrophages into mature macrophages with a regulatory phenotype in a microbial TLR ligand-independent manner. Furthermore, the cocultivation of CD4 T cells with macrophages revealed that cpTLR-i suppressed the activation of Th17 cells through the functional modulation of macrophages. Taken together, our data show the immunomodulatory potential of the TLR inhibitor peptide and suggest cpTLR-i as a novel therapeutic candidate for the treatment of IBD.


Subject(s)
Cell-Penetrating Peptides , Colitis, Ulcerative , Colitis , Inflammatory Bowel Diseases , Mice , Animals , Colitis, Ulcerative/chemically induced , Colitis, Ulcerative/drug therapy , Cell-Penetrating Peptides/pharmacology , Tumor Necrosis Factor-alpha , Macrophages
14.
PLoS One ; 18(7): e0288074, 2023.
Article in English | MEDLINE | ID: mdl-37428760

ABSTRACT

BACKGROUND: Informed consent-taking is a part of clinical practice that has ethical and legal aspects attached to it. This protects the autonomy of the patients by providing complete information regarding the rationale, modality, potential risks, benefits, and alternatives of the planned procedure to the patients. This enables the patients to make the right decision for themselves and their care. This study aims to find out if the informed consent-taking process has ensured the active participation of the patients or the next of kin in the decision-making. MATERIALS AND METHODS: This is a prospective cross-sectional study conducted in a military healthcare institution among patients undergoing major surgical procedures from July 2022 to October 2022. Ethical clearance was obtained before the commencement of this study. A structured questionnaire was prepared, and the collected data was refined in Excel and imported into SPSS for analysis. RESULTS: A total of 350 individuals of mean age 47.95 ± 16.057 years were part of this study. The majority of the respondents were married, literate, and family by beneficiary category. All of the respondents received and signed the consent form. About 77% of the respondents read it completely, and 95.4% of them reported that it was understandable. The majority of the patients did not know who was going to perform the surgery, the alternatives to the planned treatment, the benefits of the surgery, or the outcome of non-treatment. On the patient satisfaction scale, 16.28% of the participants agreed that they were satisfied with the informed consent-taking process. CONCLUSION: Deficiencies in the informed consent-taking process were the lack of dissemination of adequate information on the nature, duration, pros and cons, post-operative state, and alternative of the planned procedure. A well-structured format of the consent form that is specific to a particular procedure should be adopted, and various alternatives to it must be disseminated to the patient or the next of kin to improve the quality of the informed consent-taking process.


Subject(s)
Informed Consent , Humans , Adult , Middle Aged , Cross-Sectional Studies , Nepal , Prospective Studies , Tertiary Care Centers , Surveys and Questionnaires
15.
Ann Med Surg (Lond) ; 85(2): 295-298, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36845804

ABSTRACT

Injuries from animal attack are one of the major public health problems at present scenario globally. Proper documentation is required for the study of different types of injuries caused by animal attacks so that early intervention can be done during life-threatening conditions. Case Presentation: A 36-year-old male presented with an alleged history of attack by two rhinoceros sustaining injuries over the abdomen, chest, shoulder and thigh. Clinical Findings and Investigations: There was a lacerated abdomen with evisceration of the stomach, small intestine, transverse colon and omentum and a lacerated wound over the left lateral thigh and left buttock along with the right shoulder. Extended Focused Assessment with Sonography in Trauma ultrasound showed minimal free fluid in the pelvis. Blood profile revealed reduced haemoglobin and deranged prothrombin time/international normalized ratio. Interventions and Outcome: Patient underwent exploratory laparotomy twice with repair of diaphragmatic injury, excision of avulsed greater omentum in the first setting and repair of gastric perforation in the second setting with stable haemodynamic status. Conclusion: Abdominal evisceration injury by rhinoceros attack is life threatening though rare. Its management should consist of assessing for and controlling associated haemorrhage, assessing for bowel content leakage, covering the eviscerated abdominal contents and early reduction of viscera if there is no active bleeding.

16.
J Nepal Health Res Counc ; 20(2): 441-446, 2022 Nov 03.
Article in English | MEDLINE | ID: mdl-36550726

ABSTRACT

BACKGROUND: Central sulcus is relatively constant in anatomy and provides an important landmark in lesion localization in high convexity-parasagittal region. The purpose of this study was to evaluate various direct signs of localization of central sulcus in normal axial computed tomography scan of brain. METHODS: This cross-sectional descriptive study was conducted in 377 patients with normal findings in computed tomography scan of brain. Anatomic relationships of high convexity-parasagittal gyri and sulci that form the base for signs used for localization of central sulcus were assessed. The frequency of visualization of each sign was noted. RESULTS: Sigmoid shape "hook" of central sulcus (87%) was the most frequent sign followed by pars bracket sign (85%), thin postcentral gyrus sign (84.5%) and superior frontal sulcus-precentral sulcus sign (81.3%). Most of the central sulcus signs showed significant positive correlations with the increasing age. Pars bracket sign was the second most common sign and did not show correlation with age. CONCLUSIONS: In the absence of anatomic distortion, computed tomography anatomic techniques usually allow identification of the central sulcus on axial section with most useful sign being the sigmoid shape "hook" sign. Application of these signs in combination rather than in isolation helps to identify with near certainty the location of the central sulcus in axial plane.


Subject(s)
Brain , Magnetic Resonance Imaging , Humans , Cross-Sectional Studies , Magnetic Resonance Imaging/methods , Nepal , Brain/diagnostic imaging , Frontal Lobe
17.
PLoS One ; 17(10): e0275722, 2022.
Article in English | MEDLINE | ID: mdl-36215268

ABSTRACT

Influenza is a major cause of highly contagious respiratory illness resulting in high mortality and morbidity worldwide. Annual vaccination is an effective way to prevent infection and complication from constantly mutating influenza strains. Vaccination utilizes preemptive inoculation with live virus, live attenuated virus, inactivated virus, or virus segments for optimal immune activation. The route of administration also affects the efficacy of the vaccination. Here, we evaluated the effects of inoculation with ultraviolet (UV)-inactivated or live influenza A virus strains and compared their effectiveness and cross protection when intraperitoneal and intramuscular routes of administration were used in mice. Intramuscular or intraperitoneal inoculation with UV-inactivated Influenza A/WSN/1933 provided some protection against intranasal challenge with a lethal dose of live Influenza A/WSN/1933 but only when a high dose of the virus was used in the inoculation. By contrast, inoculation with a low dose of live virus via either route provided complete protection against the same intranasal challenge. Intraperitoneal inoculation with live or UV-inactivated Influenza A/Philippines/2/1982 and intramuscular inoculation with UV-inactivated Influenza A/Philippines/2/1982 failed to produce cross-reactive antibodies against Influenza A/WSN/1933. Intramuscular inoculation with live Influenza A/Philippines/2/1982 induced small amounts of cross-reactive antibodies but could not suppress the cytokine storm produced upon intranasal challenge with Influenza A/WSN/1993. None of the tested inoculation conditions provided observable cross protection against intranasal challenge with a different influenza strain. Taken together, vaccination efficacy was affected by the state and dose of the vaccine virus and the route of administration. These results provide practical data for the development of effective vaccines against influenza virus.


Subject(s)
Influenza Vaccines , Influenza, Human , Orthomyxoviridae Infections , Orthomyxoviridae , Administration, Intranasal , Animals , Antibodies, Viral , Disease Models, Animal , Humans , Mice , Vaccination/methods , Vaccines, Inactivated
18.
Clin Case Rep ; 9(9): e04798, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34552740

ABSTRACT

Hypertriglyceridemia led acute pancreatitis secreted exudative fluid tacked to the right iliac fossa may cause irritation of retroperitoneum leading to acute periappendicular inflammation and acute appendicitis.

19.
Surg J (N Y) ; 7(1): e3-e10, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33469564

ABSTRACT

Background Coronavirus disease 2019 (COVID-19) has evolved as a pandemic of unimaginable magnitude. The health care system is facing a tremendous challenge to provide ethical and quality care. The transformation of the patient-based care to population-based care during the COVID-19 pandemic has raised ethical dilemma among urologists. Our objective is to explore the consensus in modified standard urology care, that can be adopted and applied during COVID-19 and similar pandemic. Methods We adopted an exploratory study design using secondary data. The data were extracted from a web-based medical library using keywords "COVID-19," "severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)," and "urology." We identify and extrapolate (screening, eligibility, and inclusion) the data using PRISMA protocol, and summarize pandemic standard urology care under four main themes: (1) general urology care, (2) choice of surgical modality, (3) triage, and (4) urology training. Result We identified 63 academic papers related to our research question. The majority are expert opinions and perspectives on urology care. The common consensus is triage-based urology care and surgeries. Life or organ threatening conditions need immediate attention. Universal protective measures (personal protective equipment, safe operative environment) and protocol-based patient care are necessary to prevent and control SARS-CoV-2 infection. Conservation of the resources and its rational distribution provide an ethical basis for population-based health care during a pandemic. Informed decision making serves best to patients, families, and society during the public health crisis. Conclusion COVID-19 pandemic tends to transform standard urology practice into crisis standard population-based care. The consensus in crisis is drawn from evolving pieces of medical evidence and public health ethics. The provision of urology care during a pandemic is based on the availability of resources; severity of the disease, consequences of deferment of service, and dynamics of the pandemic.

20.
J Surg Case Rep ; 2021(6): rjab220, 2021 Jun.
Article in English | MEDLINE | ID: mdl-34104404

ABSTRACT

Gastrointestinal stromal tumors (GISTs) occurring outside the gastrointestinal tract are known as extragastrointestinal stromal tumors (EGIST). They share some common histopathologic and molecular characteristics. This report describes two female patients who were suspected of having a mesenteric GIST, but opted for surveillance rather than definitive treatment. Upon reassessment, both patients demonstrated increased tumor mass with no evidence of distant metastasis. The intraoperative findings confirmed the conclusion of clinical and imaging studies performed preoperatively and radical excisions were performed. Histopathological examination (spindle cell neoplasm) and immunohistochemistry (CD117) confirmed EGIST. Both patients underwent Imatinib therapy following surgery with no evidence of disease recurrence or metastasis upon follow up. Although sharing histologic features with GIST, EGIST frequently demonstrates distinct characteristics that facilitate the proper diagnosis and management of EGIST. Since it is a rare and aggressive disease with a poor outcome, early detection and curative surgical resection remains the mainstay of treatment.

SELECTION OF CITATIONS
SEARCH DETAIL