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1.
J Surg Case Rep ; 2024(10): rjae613, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39364427

ABSTRACT

Acquired diaphragmatic hernia is typically caused by blunt trauma to the abdomen. It can be challenging to diagnose in acute cases due to a wide range of symptoms. Delayed presentation of traumatic diaphragmatic hernia is uncommon and can lead to respiratory issues or bowel complications like incarceration, perforation, or strangulation. Computed tomography is the preferred diagnostic tool. For acute case, laparotomy is indicated traditionally; however, the choice of surgery is dependent upon the surgeon's expertise and availability of resources.

2.
Ann Med Surg (Lond) ; 86(9): 5034-5038, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39239014

ABSTRACT

Introduction: Totally extraperitoneal (TEP) and transabdominal preperitoneal (TAPP) repair are the principal techniques in laparoscopic hernia repair. Seroma formation and pain are frequent complications of moderate-large size laparoscopic direct inguinal hernia mesh repair. This study was conducted to evaluate the feasibility of defect closure in moderate-large direct inguinal hernias and its effect on various outcomes. Method: This is a prospective cohort study from September 2020 to August 2021, where a total of 88 patients with uncomplicated direct inguinal hernia (M3 or more) were enrolled in the study and divided into two equal groups of TEP defect closure and non-closure, and various outcome measures were noted. Results: The majority of patients were male (94.31%), with a mean age range of 18-85 years, and had right-sided inguinal hernia (46.5%). Seroma formation at 10th POD in the defect closure and non-closure were 24% and 33% (p value: 0.225), which reduced to 11% and 18%, respectively, at 1 month (p value: 1.000). All seromas resolved within 6 months. Pain in VAS at 10th POD in the defect closure and non-closure were 1.55±0.571 and 1.38±0.527, respectively (p value: 0.121), which gradually decreased to 1.20±0.524 and 1.16±0.420 at a 6-month interval (p value: 0.689). The mean operative time in the bilateral and unilateral defect closure groups was 72.3±4.1 and 56.5±4.3 min, respectively, whereas that in the bilateral and unilateral defect non-closure groups was 62.3±3.7 and 45.7±3.6 min, respectively. Conclusion: The defect closure was found to have higher pain and less seroma formation at various intervals of time following TEP for moderate-large direct inguinal hernia. Although these findings were statistically insignificant, they may be clinically significant, and further studies with a larger sample size are suggested.

3.
Colorectal Dis ; 26(10): 1797-1804, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39169548

ABSTRACT

AIM: There is no universally accepted treatment consensus for haemorrhoids, and thus, management has been individualized all over the world. This study was conducted to assess a global view of how surgeons manage haemorrhoids. METHODS: The research panel of the International Society of University Colon and Rectal Surgeons (ISUCRS) developed a voluntary, anonymous questionnaire evaluating surgeons' experience, volume and treatment approaches to haemorrhoids. The 44 multiple-choice questionnaire was available for one month via the ISUCRS email database and the social media platforms Viber and WhatsApp. RESULTS: The survey was completed by 1005 surgeons from 103 countries; 931 (92.6%) were in active practice, 819 (81.5%) were between 30 and 60 years of age, and 822 (81.8%) were male. Detailed patient history (92.9%), perineal inspection (91.2%), and digital rectal examination (91.1%) were the most common assessment methods. For internal haemorrhoids, 924 (91.9%) of participants graded them I-IV, with the degree of haemorrhoids being the most important factor considered to determine the treatment approach (76.3%). The most common nonprocedural/conservative treatment consisted of increased daily fibre intake (86.9%), increased water intake (82.7%), and normalization of bowel habits/toilet training (74.4%). Conservative treatment was the first-line treatment for symptomatic first (92.5%), second (72.4%) and third (47.3%) degree haemorrhoids; however, surgery was the first-line treatment for symptomatic fourth degree haemorrhoids (77.6%). Rubber band ligation was the second-line treatment in first (50.7%) and second (47.2%) degree haemorrhoids, whereas surgery was the second-line treatment in third (82.9%) and fourth (16.7%) degree symptomatic haemorrhoids. Rubber band ligation was performed in the office by 645(64.2%) of the participants. The most common surgical procedure performed for haemorrhoids was an excisional haemorrhoidectomy for both internal (87.1%) and external (89.7%) haemorrhoids - with 716 (71.2%) of participants removing 1, 2 or 3 sectors as necessary. CONCLUSION: Although there is no global haemorrhoidal treatment consensus, there are many practice similarities among the different cultures, resources, volume and experience of surgeons around the world. With additional studies, a consensus statement could potentially be developed.


Subject(s)
Hemorrhoidectomy , Hemorrhoids , Practice Patterns, Physicians' , Hemorrhoids/therapy , Hemorrhoids/surgery , Humans , Male , Female , Middle Aged , Adult , Surveys and Questionnaires , Hemorrhoidectomy/methods , Practice Patterns, Physicians'/statistics & numerical data , Colorectal Surgery/statistics & numerical data , Surgeons/statistics & numerical data , Societies, Medical , Medical Audit , Ligation , Global Health
4.
Nat Commun ; 15(1): 7546, 2024 Aug 30.
Article in English | MEDLINE | ID: mdl-39214968

ABSTRACT

Intervalley excitons with electron and hole wavefunctions residing in different valleys determine the long-range transport and dynamics observed in many semiconductors. However, these excitons with vanishing oscillator strength do not directly couple to light and, hence, remain largely unstudied. Here, we develop a simple nanomechanical technique to control the energy hierarchy of valleys via their contrasting response to mechanical strain. We use our technique to discover previously inaccessible intervalley excitons associated with K, Γ, or Q valleys in prototypical 2D semiconductors WSe2 and WS2. We also demonstrate a new brightening mechanism, rendering an otherwise "dark" intervalley exciton visible via strain-controlled hybridization with an intravalley exciton. Moreover, we classify various localized excitons from their distinct strain response and achieve large tuning of their energy. Overall, our valley engineering approach establishes a new way to identify intervalley excitons and control their interactions in a diverse class of 2D systems.

5.
Neurourol Urodyn ; 2024 Jul 09.
Article in English | MEDLINE | ID: mdl-38979797

ABSTRACT

INTRODUCTION: We aim to compare the clinical and urodynamic profile of lower urinary tract symptoms (LUTS) in patients undergoing laparoscopic, open transabdominal, and laparoscopic transabdominal vesicovaginal fistulae (VVF) repair at 3 months of repair, that is, in early postoperative period. MATERIALS AND METHODS: Fifty-one consecutive patients with endoscopically confirmed VVF were enrolled in our study over 2 years. Malignant fistulae, radiation-induced, and complex fistulae were excluded after cross-sectional imaging. All patients underwent a postoperative assessment for the success of the repair. Then at 3 months, they completed the American Urological Association Symptom Score questionnaire and underwent a dual channel pressure-flow urodynamic study. The results of transvaginal, laparoscopic, and open transabdominal repairs were compared. RESULTS: All patients belonged to the Indian Caucasian race. The mean age was 35.43 ± 6.63 years. Thirty-two patients had supratrigonal and 19 had trigonal fistulae. Laparoscopic transabdominal repair was done in 15 patients, open transabdominal repair in 22 patients, and transvaginal repair in 14 patients. Forty-six patients reported some LUTS at a median follow-up of 5.83 ± 2.37 months postoperatively. Only 18 (35.2%) of these patients had moderate to severe symptoms The postoperative bladder dysfunction rates in open transabdominal, transvaginal and laparoscopic transabdominal groups were 36.4%, 28.6%, and 20%, respectively. Twenty-seven patients (52.9%) had some urodynamic abnormality, that is, small capacity (5), high voiding pressures (14), genuine stress incontinence (3), and poor compliance (3). Bladder capacity was a significant predictor of bladder dysfunction in our patients. CONCLUSIONS: In our study, all three surgical approaches were associated with bladder dysfunction, however, it was the least in the laparoscopic transabdominal approach. Postoperative bladder capacity is a significant predictor of bladder dysfunction.

6.
Leuk Lymphoma ; 65(7): 911-921, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38598516

ABSTRACT

Parsaclisib, a potent and highly selective phosphoinositide 3-kinase δ inhibitor, has shown clinical activity in relapsed/refractory (R/R) B-cell lymphoma. The phase 1 CITADEL-112 (NCT03424122) study assessed safety and efficacy of parsaclisib in combination with investigator choice standard of care (SOC; rituximab [Treatment A], rituximab plus bendamustine [Treatment B], or ibrutinib [Treatment C]) in 50 patients with R/R B-cell lymphoma. The most common treatment-emergent adverse events included neutropenia (62.5%, 50.0%, and 50.0% of patients in Treatments A, B, and C, respectively); diarrhea (37.5%) and anemia (31.3%) in Treatment A; abdominal pain, asthenia, diarrhea, and nausea (each 33.3%) in Treatment B; and increased alanine and aspartate aminotransferase (each 37.5%) in Treatment C. Objective responses were observed in 13 patients (81.3%) in Treatment A, 10 (55.6%) in Treatment B, and 8 (50.0%) in Treatment C. Parsaclisib combined with SOC therapies had an expected safety profile and promising efficacy in patients with R/R B-cell lymphomas.


Subject(s)
Adenine , Antineoplastic Combined Chemotherapy Protocols , Bendamustine Hydrochloride , Lymphoma, B-Cell , Piperidines , Rituximab , Humans , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Piperidines/administration & dosage , Piperidines/therapeutic use , Piperidines/adverse effects , Rituximab/administration & dosage , Rituximab/adverse effects , Rituximab/therapeutic use , Male , Female , Bendamustine Hydrochloride/administration & dosage , Bendamustine Hydrochloride/adverse effects , Middle Aged , Aged , Adenine/analogs & derivatives , Adenine/administration & dosage , Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/pathology , Adult , Treatment Outcome , Aged, 80 and over , Pyrazoles/administration & dosage , Pyrazoles/adverse effects , Pyrazoles/therapeutic use , Pyrimidines/administration & dosage , Pyrimidines/adverse effects , Pyrimidines/therapeutic use
7.
Clin Case Rep ; 12(4): e8759, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38617069

ABSTRACT

Key Clinical Message: Foreign body ingestion is common in pediatric age group however can be found in any age group with intellectual disability and neurodevelopmental delay. There is usually a delay in presentation and interventions following foreign body ingestion in patients with neurodevelopmental delay, leading to increased morbidity, mortality, and complications owing to inability of such patients giving relevant history. Most ingested foreign bodies naturally pass through the digestive tract without untoward effects. Only a few patients may require surgical interventions. Principle of management should be to reduce anxiety among patients and their visitors. Speedy recovery is enhanced so that they can return to their familiar environment soon. Abstract: Foreign body ingestion is common in pediatric populations and may be found in any age group with intellectual disability and neurodevelopmental delay. As the patient cannot give a clear and relevant history, there is usually a delay in presentation and interventions following foreign body ingestion in patients with neurodevelopmental delay, leading to increased morbidity, mortality, and complications. Most foreign bodies pass through the digestive system without any complications, and very few require surgical intervention. The goal should be to reduce anxiety among patients and their visitors and to enhance speedy recovery so that they can return to their familiar environment soon. Here we report a case of Acute intestinal obstruction secondary to ingestion of the head portion of a doll which was managed with emergency laparotomy with enterotomy and removal of foreign body in a 16 years female with Autism Spectrum Disorder.

8.
Br J Haematol ; 204(5): 1762-1770, 2024 May.
Article in English | MEDLINE | ID: mdl-38500476

ABSTRACT

The combination of the phosphatidylinositol 3-kinase delta (PI3Kδ) inhibitor zandelisib with the Bruton's tyrosine kinase (BTK) inhibitor zanubrutinib was hypothesized to be synergistic and prevent resistance to single-agent therapy. This phase 1 study (NCT02914938) included a dose-finding stage in patients with relapsed/refractory (R/R) B-cell malignancies (n = 20) and disease-specific expansion cohorts in follicular lymphoma (FL; n = 31) or mantle cell lymphoma (MCL; n = 19). The recommended phase 2 dose was zandelisib 60 mg on Days 1-7 plus zanubrutinib 80 mg twice daily continuously in 28-day cycle. In the total population, the most common adverse events (AEs; all grades/grade 3-4) were neutropenia (35%/24%), diarrhoea (33%/2%), thrombocytopenia (32%/8%), anaemia (27%/8%), increased creatinine (25%/0%), contusion (21%/0%), fatigue (21%/2%), nausea (21%/2%) and increased aspartate aminotransferase (24%/6%). Three patients discontinued due to AEs. The overall response rate was 87% (complete response [CR] = 33%) for FL and 74% (CR = 47%) for MCL. The median duration of response and progression-free survival (PFS) were not reached in either group. The estimated 1-year PFS was 72.3% (95% confidence interval [CI], 51.9-85.1) for FL and 56.3% (95% CI, 28.9-76.7) for MCL (median follow-up: 16.5 and 10.9 months respectively). Zandelisib plus zanubrutinib was associated with high response rates and no increased toxicity compared to either agent alone.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols , Lymphoma, Follicular , Lymphoma, Mantle-Cell , Pyrazoles , Pyrimidines , Humans , Lymphoma, Mantle-Cell/drug therapy , Female , Male , Aged , Middle Aged , Lymphoma, Follicular/drug therapy , Lymphoma, Follicular/mortality , Pyrimidines/adverse effects , Pyrimidines/administration & dosage , Pyrimidines/therapeutic use , Pyrazoles/adverse effects , Pyrazoles/therapeutic use , Pyrazoles/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Adult , Thiazoles/adverse effects , Thiazoles/administration & dosage , Thiazoles/therapeutic use , Aged, 80 and over , Agammaglobulinaemia Tyrosine Kinase/antagonists & inhibitors , Treatment Outcome , Piperidines
9.
Radiol Case Rep ; 19(5): 1819-1822, 2024 May.
Article in English | MEDLINE | ID: mdl-38420343

ABSTRACT

Blunt trauma abdomen with abdominal wall herniation with bowel perforation is an acute emergency condition. Road traffic accidents causing blunt trauma are common in a youngster like in our case. Once the patient is resuscitated, ultrasonography and Computed tomography must be done. Early surgical exploration with mesh or primary repair of the defect is the mainstay of management. We have a case of a 25-year-old male with blunt trauma abdomen and anterior wall hernia following a road traffic accident who was managed with emergency exploratory laparotomy as computed tomography suggested anterior abdominal wall herniation of bowel content.

10.
Radiol Case Rep ; 19(4): 1424-1431, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38292787

ABSTRACT

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors involving the gastrointestinal tract, arising from the interstitial cells of Cajal. GIST comprises about 1% of all GI tumors. Rectal GISTs are rare and comprise of approximately 5% of all GISTs and only 0.1% of rectal tumors are found to be GISTs. Rectal GISTs may be diagnosed incidentally or present with symptoms, including defecation problems, bleeding, and/or pain. We report a case of a 46-year-old male with rectal GIST metastasized to the liver and bilateral lung parenchyma managed by Imatinib Mesylate (IM) regimen. Rectal GIST although being rare, must be considered as a differential diagnosis in a patient presenting with defecatory problems with bleeding.

11.
BMJ Case Rep ; 16(11)2023 Nov 02.
Article in English | MEDLINE | ID: mdl-37918947

ABSTRACT

A male child in the first decade of life presented to us with a history of a pelvic fracture and urethral injury resulting from a road traffic accident 4 months prior. He had previously undergone an exploratory laparotomy and suprapubic cystostomy at another medical centre. He was circumcised and exhibited a substantial urethral defect on the retrograde urethrogram, as well as on the micturating cystourethrogram. Following a careful assessment of the patient's and caregivers' expectations, a continent cutaneous catheterisable channel was planned. This procedure involved the use of an anterolateral bladder flap, and continence was achieved through the creation of a Nissen-type seromuscular invagination. Three months postoperatively, the child remains continent, can easily catheterise the stoma and has resumed his education.


Subject(s)
Fractures, Bone , Urinary Diversion , Child , Male , Humans , Urinary Bladder/surgery , Urinary Bladder/injuries , Cystostomy/methods , Urethra/surgery , Urethra/injuries , Fractures, Bone/complications , Fractures, Bone/surgery , Retrospective Studies
12.
Nano Lett ; 23(20): 9212-9218, 2023 Oct 25.
Article in English | MEDLINE | ID: mdl-37788809

ABSTRACT

Optically dark excitons determine a wide range of properties of photoexcited semiconductors yet are hard to access via conventional time-resolved spectroscopies. Here, we develop a time-resolved ultrafast photocurrent technique (trPC) to probe the formation dynamics of optically dark excitons. The nonlinear nature of the trPC makes it particularly sensitive to the formation of excitons occurring at the femtosecond time scale after the excitation. As a proof of principle, we extract the interlayer exciton formation time of 0.4 ps at 160 µJ/cm2 fluence in a MoS2/MoSe2 heterostructure and show that this time decreases with fluence. In addition, our approach provides access to the dynamics of carriers and their interlayer transport. Overall, our work establishes trPC as a technique to study dark excitons in various systems that are hard to probe by other approaches.

13.
Sci Data ; 10(1): 516, 2023 08 04.
Article in English | MEDLINE | ID: mdl-37542103

ABSTRACT

This study collected evidence on the use of early sown wheat varieties and complementary zero tillage technologies in Northwest India. Detailed information on farmers' knowledge, adoption decisions, personal experience, and perceptions of early sown wheat and zero tillage technologies were collected at the household level using different survey tools. Additional information on agricultural practices during the Rabi Season 2021/22 were collected at the plot level and geocoded. Overall, the dataset comprises responses from 1206 wheat farmers in 70 villages across 7 districts in Punjab and Haryana that were collected between September and October 2022. The villages were selected using stratified random sampling based on a sampling frame of 1722 communities that had been identified as predominantly wheat growing areas based on remote-sensing data from satellite images. The dataset provides rich information that may be used for assessing the diffusion and impact of recently developed wheat varieties designed for early sowing, identifying barriers to the wider adoption of these technologies, and informing policy making aimed at improving adoption and usage decisions of agricultural innovations.

14.
J Surg Case Rep ; 2023(7): rjad404, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37434718

ABSTRACT

Foreign body in the anal canal may be inserted for sexual gratification or sexual assault or accidental or drug trafficking. We report a case of a male who accidentally inserted a cough syrup bottle in his rectum. Presentation is usually late due to fear and embarrassment. The manual attempt of removal may be tried under adequate anesthesia. Post-procedure sigmoidoscopy or colonoscopy may be helpful to diagnose laceration or mucosal injury.

15.
Commun Med (Lond) ; 3(1): 38, 2023 Mar 22.
Article in English | MEDLINE | ID: mdl-36949164

ABSTRACT

BACKGROUND: The high prevalence of anemia in resource-constrained settings calls for easy-to-use, inexpensive screening tools. The Sanguina Smartphone App, an innovative tool for non-invasive hemoglobin estimation via color-sensitive, algorithm-based analysis of fingernail bed images, was validated in the United States. This study evaluates the performance of the App in a population with different socio-economic, ethnic, demographic and cultural composition in rural Bihar, India. METHODS: For 272 mainly adult patients of a private health centre, hemoglobin measurement with the App is compared with the gold standard laboratory blood analysis. For a second sample of 179 children attending pre-schools, hemoglobin measurement with the App is compared to the results of the HemoCue Hb 301, a point-of-care device using a small blood sample, serving as the reference standard for field-based settings. RESULTS: The App reaches ±4.43 g/dl accuracy and 0.38 g/dl bias of comparator values in the clinic-based sample, and ±3.54 g/dl and 1.30 g/dl, respectively in the pre-school sample. After retraining the algorithm with the collected data, the validity of the upgraded version is retested showing an improved performance (accuracy of ±2.25 g/dl, bias of 0.25 g/dl), corresponding to the results of the original validation study from the United States. CONCLUSIONS: The initial version of the App does not achieve the accuracy needed for diagnosis or screening. After retraining the algorithm, it achieves an accuracy sufficient for screening. The improved version with the potential for further adaptions is a promising easy-to-use, inexpensive screening tool for anemia in resource-constrained point-of-care settings.


Hemoglobin is a protein in the blood that is required to move oxygen around the body. Anemia is a condition that occurs when levels of hemoglobin are too low. Anemia can lead to serious problems with the heart and lungs. This study assesses the accuracy of using a Smartphone App to measure hemoglobin levels by taking photos of a person's nails in rural Bihar, India. Results from the App are compared with those obtained by measuring hemoglobin in blood samples. Initially, measurements of hemoglobin obtained using the App were inaccurate, however when the App was modified using data from some of the people in India, the App was more accurate. This study shows that the App can and should be adapted for use in different populations and can enable anemia to be diagnosed outside of hospitals and other healthcare settings.

16.
J Hematol ; 12(6): 272-276, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38188478

ABSTRACT

Sarcoidosis is a multisystem disorder characterized by granulomatous inflammation on histopathological evaluation. Diagnosis of sarcoidosis requires thorough elimination of malignancy and alternative causes of noncaseating granulomatous inflammation. Sarcoidosis and several subtypes of lymphoma have similar clinical presentations and can potentially have similar histopathological findings. Patients with a histopathology-confirmed diagnosis of sarcoidosis are at higher risk of developing malignancies. In this report, we present a case of a 64-year-old male diagnosed with sarcoidosis 2 years before presenting to the emergency department with a 4-month history of generalized weakness, cough, and very high fever. After a thorough workup involving cervical lymph node biopsy and bone marrow biopsy, he was diagnosed with peripheral T-cell lymphoma, not otherwise specified (PTCL, NOS). Due to the patient's current lymphoma diagnosis and features noted on pathology, a retrospective review of the prior biopsy specimen was performed, finding similar hematopathological features on both initial lymph node biopsy diagnosing sarcoidosis and current biopsies diagnosing lymphoma. Given these findings, our patient likely had early manifestation of PTCL misdiagnosed as sarcoidosis. In summary, lymphoma should be considered in all patients with suspected sarcoidosis, especially those who do not respond to treatment or who present with persistent hematological abnormalities.

17.
Nat Commun ; 13(1): 7691, 2022 Dec 12.
Article in English | MEDLINE | ID: mdl-36509779

ABSTRACT

Mechanical strain is a powerful tuning knob for excitons, Coulomb-bound electron-hole complexes dominating optical properties of two-dimensional semiconductors. While the strain response of bright free excitons is broadly understood, the behaviour of dark free excitons (long-lived excitations that generally do not couple to light due to spin and momentum conservation) or localized excitons related to defects remains mostly unexplored. Here, we study the strain behaviour of these fragile many-body states on pristine suspended WSe2 kept at cryogenic temperatures. We find that under the application of strain, dark and localized excitons in monolayer WSe2-a prototypical 2D semiconductor-are brought into energetic resonance, forming a new hybrid state that inherits the properties of the constituent species. The characteristics of the hybridized state, including an order-of-magnitude enhanced light/matter coupling, avoided-crossing energy shifts, and strain tunability of many-body interactions, are all supported by first-principles calculations. The hybridized excitons reported here may play a critical role in the operation of single quantum emitters based on WSe2. Furthermore, the techniques we developed may be used to fingerprint unidentified excitonic states.

18.
Sci Rep ; 12(1): 17038, 2022 10 11.
Article in English | MEDLINE | ID: mdl-36220880

ABSTRACT

The vaccination drive against COVID-19 worldwide was quite successful. However, the second wave of infections was even more disastrous. There was a rapid increase in reinfections and human deaths due to the appearance of new SARS-CoV-2 variants. The viral genome mutations in the variants were acquired while passing through different human hosts that could escape antibodies in convalescent or vaccinated individuals. The treatment was based on oxygen supplements and supportive protocols due to the lack of a specific drug. In this study, we identified three lead inhibitors of arylated coumarin derivatives 4,6,8-tri(naphthalen-2-yl)-2H-chromen-2-one (NF1), 8-(4-hydroxyphenyl)-4,6-di(naphthalen-2-yl)-2H-chromen-2-one (NF12) and 8-(4-hydroxyphenyl)-3,6-di(naphthalen-2-yl)-2H-chromen-2-one (NF-13) that showed higher binding affinity towards the junction of SARS-CoV-2 spike glycoprotein (S-protein) and human angiotensin-converting enzyme 2 (ACE2) receptor. Using molecular docking analysis, we identified the putative binding sites of these potent inhibitors. Notably, molecular dynamics (MD) simulation and MM-PBSA studies confirmed that these inhibitors have the potential ability to bind Spike-protein/ACE2 protein complex with minimal energy. Further, the two major concerns are an adaptive mutation of spike proteins- N501Y and D614G which displayed strong affinity towards NF-13 in docking analysis. Additionally, in vitro and in vivo studies are required to confirm the above findings and develop the inhibitors as potential drugs against SARS-CoV-2.


Subject(s)
Angiotensin-Converting Enzyme 2 , COVID-19 Drug Treatment , Coumarins/pharmacology , Humans , Molecular Docking Simulation , Molecular Dynamics Simulation , Oxygen , Peptidyl-Dipeptidase A/metabolism , Protein Binding , Protein Domains , SARS-CoV-2 , Spike Glycoprotein, Coronavirus/metabolism
19.
Ann Med Surg (Lond) ; 81: 104466, 2022 Sep.
Article in English | MEDLINE | ID: mdl-36147084

ABSTRACT

Introduction: Laparoscopic hernia repairs have comparable recurrence rate with less persisting pain and numbness and quicker return to usual activities as compared to open mesh repair. The excellent outcomes of minimally invasive surgery encourage us to extend the laparoscopic technique to complicated groin hernia. Method: A total of 22 patients with complicated groin hernia who presented to our institute from September 2017 to September 2018 were included in this prospective cohort study. Inclusion criteria were patients with age greater than 18 years and clinically diagnosed as complicated groin hernia. Patients with peritonitis, those with previous abdominal surgery and unfit for general anesthesia were excluded from our study. Results: The most common age group was 51-60 (31.8%) years.17 cases were repaired with totally laparoscopic approach (12 TEP, 5 TAPP). Laparoscopic repair with additional procedure was needed in 3 cases and 2 cases were converted to open for completion of the procedure. The mean operating time was 154.8 ± 51.6 (range: 90 to 230) minutes. The average length of hospital stay was 3.8 ± 3 (range: 1 to 12) days. Bleeding from the inferior epigastric and testicular vessels were the major intra-operative complication (11.8%). Seroma and surgical site infection were seen in 2 (11.8%) patients. Conclusion: Laparoscopic approach in cases of complicated groin hernia can achieve desirable patient outcomes without major complications, provided good patient selection and expertise. The evidence for laparoscopic repair as the choice of procedure in complicated groin hernia can be established from further comparative studies.

20.
Tzu Chi Med J ; 34(3): 329-336, 2022.
Article in English | MEDLINE | ID: mdl-35912058

ABSTRACT

Objectives: An alarming rate of adverse perinatal outcomes as well as maternal deaths has been reported worldwide during this pandemic. It would be prudent to start thinking on the lines of acute or chronic intrauterine fetal hypoxia due to placental microvascular pathology or villitis caused by severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection. Autopsy studies of deceased patients with severe COVID-19 have revealed the presence of diffuse pulmonary alveolar damage, thrombosis, and microvascular injuries. It is expected that similar pathological features such as microvascular injuries could be found in the placenta of infected pregnant women. Materials and Methods: Placentas of singleton pregnancies from 42 SARS-CoV-2 positive mothers delivered at term were submitted for histopathological examination. Those with multifetal gestation, hypertensive disorder, fetal growth restriction, structural or chromosomal anomalies in the fetus, thrombophilia, prolonged prelabor rupture of membranes, and placenta accreta spectrum were excluded from the study. Histopathological examination was done by two pathologists independently and only those results concurred by both were reported. Histopathological features and corresponding neonatal outcome were analyzed. Results: Reports of 42 placentas from patients with SARS-CoV-2, delivered at term (37-40 weeks) were analyzed in our study. Features of maternal vascular malperfusions (MVM) were present in 45% (n = 19) cases. Features of fetal vascular malperfusions (FVM) were present in 23.8% (n = 10) cases. There were 47.6% (n = 20) cases showing at least one feature of acute inflammatory pathology (AIP) and 42.8% (n = 18) showing features of chronic inflammatory pathology (CIP). Neonatal respiratory distress syndrome was found in 19% (n = 8) of the neonates. Correspondingly, nearly all placentas (n = 7) of these neonates showed features of MVM, FVM, AIP and CIP. There was no maternal or neonatal mortality in our study group. Conclusion: The main findings of our study include maternal as well as fetal vascular malperfusions and placental inflammatory pathology. These findings provide an outline for better understanding of etiological factors and pathogenesis of adverse perinatal outcomes in SARS-CoV-2 infection.

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