Stability analyses of sunflower (Helianthus annuus L.) hybrids for oleic acid and yield traits under multi location trials in Pakistan

The development of a hybrid with high oleic acid is an important breeding goal for sunflower. High oleic acid sunflower has better cooking quality due to low oxidation and rancidity. Hence, inbred lines differing for oleic acid content were selected, alongside the development of hybrids where one or both parents exhibited high oleic acid content in edible oil, and then evaluated at various sites (i.e. with comparatively low temperature during sunflower reproductive phase at Sargodha and Faisalabad; while high temperature and low humidity at Bhawalpur and Multan) in Pakistan during spring season. Moreover, autumn season was relatively cool and high humid for sites (Faisalabad and Sargodha, Pakistan). DNA profiling of hybrids differing for oleic acid content using N1-3F/N2-1R confirmed the presence of a high oleic acid allele in the hybrids. Oleic acid content and seed yield components were increased at high temperature and low humidity to a greater extent in spring than in autumn season. Among the hybrids, one (H5) had stable high oleic acid content during the spring season with higher seed yield and kernel to seed percentage than the check cultivars (Hysun-33 and FH-331). Analysis of the combining ability of two locations revealed a relationship between mean oleic acid contents and combining ability, thereby suggesting the effectiveness of selection in developing high oleic acid inbred lines. Newly developed inbred C.112.P was a positive combiner for oleic acid at all sites except Sargodha, while restorer populations such as RH.344, RH.345 and RH.347 were positive male combiners

Medical thoracoscopy- an experience

Background: Medical thoracoscopy is a minimally invasive procedure for diagnosing and treating pleural diseases especially undiagnosed exudative pleural effusion. It is cost effective and safe. The diagnostic yield in undiagnosed pleural effusion is excellent.Methods: This prospective observational study was done in Government Chest Disease hospital of Government Medical College, Srinagar during the period between December 2015 to Dec 2016.Thirty undiagnosed pleural effusion patients after thoracocentesis and who fulfilled inclusion and exclusion criteria’s were included in the study. Medical thoracoscopy using rigid thoracoscope was started for the first time in our hospital and was done in these enrolled patients. Clinical, Thoracoscopic findings and histopathological data of the patients were collected prospectively and analysed.Results: Maximum patients were in the age group of 41-50 years. Most common Thoracoscopic finding was multiple nodules (40%) followed by sago grain infiltration (33.4%). Malignancy was the most common HPE finding of pleural biopsy (46.6%) followed by TB (33.3%). All nodules (13) turned out to be malignant while all sago grain appearance pleura (10) turned out of to be TB. The overall diagnostic yield is 80% as a whole and 96% among patients who had thoracoscopic pleural findings.Conclusions: Medical Thoracoscopy is a safe and easy outpatient procedure and an excellent diagnostic tool for undiagnosed exudative pleural effusion. The diagnostic yield is quite high and complications of procedure are negligible

Role of fibreoptic bronchoscopy in haemoptysis: an analysis of 157 patients

Background: Objectives of this study were to define the role of fibreoptic bronchoscopy (FOB) in determining the etiology of haemoptysis, to determine whether bronchoscopy is useful in haemoptysis with normal chest x-ray, to determine whether early bronchoscopy is better than delayed bronchoscopy.Methods: This prospective study was conducted on 157 patients who presented with hemoptysis to the Department of Tuberculosis and Chest diseases. All these patients underwent FOB after taking proper history and examination and ruling out any contraindication to the procedure.Results: In patients with haemoptysis with normal CXR, a diagnosis was established in 54.5% by FOB while 38.6% had a normal bronchoscopy. An endoscopic diagnosis of bronchitis was made in 22.7% patients. In only 9.1% patients an endobronchial mass was seen on bronchoscopy, and all of them were more than 40 years of age. Active bleeding/bleeding site was localized in 18.1% patients. In patients with abnormal chest roentgenogram who underwent FOB, a definitive diagnosis was established in 75.4% cases with active bleeding/ bleeding site localized in 59.6%. Thirty five percent were having an endobronchial mass. Of all the patients who underwent FOB for recurrent haemoptysis, active bleeding/bleeding site was localized in 48.4% patients. Bleeding site was localized in 62.9% patients who underwent early FOB, while the yield was lower (29.4%) in patients who underwent delayed FOB.Conclusions: Fibreoptic bronchoscopy (FOB) is an important and useful investigation in patients of haemoptysis in determining the bleeding site and etiology of haemoptysis. Early FOB has higher yield in localizing the bleeding site than delayed FOB.

Transthoracic ultrasound guided fine needle aspiration cytology of peripheral lung lesions: an experience of a pulmonologist

Background: Ultrasound (USG) guided fine needle aspiration cytology (FNAC) is a simple and cost-effective method for the diagnosis of various peripheral lung lesions. Being radiation free and easily available in most of centres, it has become an important diagnostic modality for early diagnosis of peripheral lung lesions. Besides procedure is simple and complications if occur, can be managed by a pulmonologist effectively. This study was aimed to evaluate the role of Transthoracic ultrasound guided FNAC in diagnosis of peripheral lung lesion.Methods: This prospective observational study was conducted at Government Chest Diseases Hospital Srinagar over a period of one year from January 2018-December 2018. 61 patients who fulfilled inclusion criteria were included in this study. After properly explaining the procedure and taking informed consent, USG guided FNAC was done in patients with peripheral lung lesions under local anaesthesia. Radiological and cytological data of enrolled patients was collected prospectively and analysed.Result: About 61 patients were included in this study comprising of 39 males and 22 females in age range of 17- 90 years. Malignancy was the most common cytological diagnosis (78.57%). while as benign diagnosis was reached in 21.43%. In 8.19% of patients, FNAC was inconclusive. Among the malignant group, adenocarcinoma (47.72%) was most common cytological diagnosis. The overall diagnostic yield of USG guided FNAC in this study was 91.8%.Conclusion: USG guided FNAC of peripheral lung lesions is a simple procedure with high accuracy and less complication rate which can be performed by a pulmonologist for diagnosis

Real time endobronchial ultrasound guided transbronchial needle aspiration of intrathoracic lymphadenopathy: an initial experience

Background: Conventional TBNA has been used in the evaluation of intrathoracic lymphadenopathy with varied success rates depending upon size, site and aetiology of the node. Although mediastinoscopy has higher successes but it comes at the cost of general anaesthesia, more complications and limited access to the inferior and posterior mediastinum. Endobronchial ultrasound guided transbronchial needle aspiration has the advantage of real time nodal sampling with good success rates and minimal complications. The aim of our study was to assess the diagnostic yield and safety of EBUS TBNA in the evaluation of intrathoracic lymphadenopathy.Methods: This prospective observational study was conducted at government chest diseases hospital Srinagar over a period of two years from January 2016-December 2018 on 100 consecutive patients who underwent EBUS TBNA procedure for evaluation mediastinal and hilar lymphadenopathy. The data was collected and analysed for diagnostic yield and safety profile.Results: Out of the 100 subjects included in the study 52% were males and 48% were females. Mean age of the study population was 48.5±16.65 years. Most of the nodes sampled were subcarinal in location followed by paratracheal and hilar group. Granulomatous pathology (tuberculosis and sarcoidosis) was present in 41 patients followed by malignancy in 39 patients. Anthracosis was the cause of lymphadenopathy in 4 of the patients. There were no major complications in our study.Conclusions: EBUS TBNA is an effective and safe procedure for evaluation of mediastinal and hilar lymphadenopathy

Medical thoracoscopy in evaluation of undiagnosed pleural effusion

Background: Medical thoracoscopy or pleuroscopy, in recent past has received lot of interest for diagnostic as well as therapeutic purposes. In the evaluation of undiagnosed pleural effusion, it has become a key diagnostic modality as it is a cost effective and safe procedure. The aim of present study was to assess the diagnostic yield of medical thoracoscopy in patients with undiagnosed exudative pleural effusion.Methods: This prospective study was conducted at government chest diseases hospital Srinagar between December 2016 to June 2018. One hundred and twenty-five (125) patients who fulfilled inclusion criteria were included in this study. Thoracoscopy was done using rigid thoracoscope under local anesthesia.  Thoracoscopic and histopathological data of enrolled patients was collected prospectively and analysed.Results: Patients enrolled in the study were in the age range of 17 to 82 years and consisted of 80 males and 45 females. Most common thoracoscopic finding was multiple variable sized nodules (53.6%) followed by sago grain infiltration (15.2%). Malignancy was the most common histopathological diagnosis (60.8%) with metastatic adenocarcinoma being the most common histopathological diagnosis (50%). The overall diagnostic yield of thoracoscopy was 90.4%.Conclusions: Medical thoracoscopy is a safe procedure with excellent diagnostic yield for evaluation of undiagnosed pleural effusion with minimal complication rates

Ribavirin inhibits the replication of infectious bursal disease virus predominantly through depletion of cellular guanosine pool

IntroductionThe antiviral activity of different mutagens against single-stranded RNA viruses is well documented; however, their activity on the replication of double-stranded RNA viruses remains unexplored. This study aims to investigate the effect of different antivirals on the replication of a chicken embryo fibroblast-adapted Infectious Bursal Disease virus, FVSKG2. This study further explores the antiviral mechanism utilized by the most effective anti-IBDV agent.MethodsThe cytotoxicity and anti-FVSKG2 activity of different antiviral agents (ribavirin, 5-fluorouracil, 5-azacytidine, and amiloride) were evaluated. The virus was serially passaged in chicken embryo fibroblasts 11 times at sub-cytotoxic concentrations of ribavirin, 5-fluorouracil or amiloride. Further, the possible mutagenic and non-mutagenic mechanisms utilized by the most effective anti-FVSKG2 agent were explored.Results and DiscussionRibavirin was the least cytotoxic on chicken embryo fibroblasts, followed by 5-fluorouracil, amiloride and 5-azacytidine. Ribavirin inhibited the replication of FVSKG2 in chicken embryo fibroblasts significantly at concentrations as low as 0.05 mM. The extinction of FVSKG2 was achieved during serial passage of the virus in chicken embryo fibroblasts at ≥0.05 mM ribavirin; however, the emergence of a mutagen-resistant virus was not observed until the eleventh passage. Further, no mutation was observed in 1,898 nucleotides of the FVSKG2 following its five passages in chicken embryo fibroblasts in the presence of 0.025 mM ribavirin. Ribavarin inhibited the FVSKG2 replication in chicken embryo fibroblasts primarily through IMPDH-mediated depletion of the Guanosine Triphosphate pool of cells. However, other mechanisms like ribavirin-mediated cytokine induction or possible inhibition of viral RNA-dependent RNA polymerase through its interaction with the enzyme’s active sites enhance the anti-IBDV effect. Ribavirin inhibits ds- RNA viruses, likely through IMPDH inhibition and not mutagenesis. The inhibitory effect may, however, be augmented by other non-mutagenic mechanisms, like induction of antiviral cytokines in chicken embryo fibroblasts or interaction of ribavirin with the active sites of RNA-dependent RNA polymerase of the virus

PANC Study (Pancreatitis: A National Cohort Study): national cohort study examining the first 30 days from presentation of acute pancreatitis in the UK

Abstract Background Acute pancreatitis is a common, yet complex, emergency surgical presentation. Multiple guidelines exist and management can vary significantly. The aim of this first UK, multicentre, prospective cohort study was to assess the variation in management of acute pancreatitis to guide resource planning and optimize treatment. Methods All patients aged greater than or equal to 18 years presenting with acute pancreatitis, as per the Atlanta criteria, from March to April 2021 were eligible for inclusion and followed up for 30 days. Anonymized data were uploaded to a secure electronic database in line with local governance approvals. Results A total of 113 hospitals contributed data on 2580 patients, with an equal sex distribution and a mean age of 57 years. The aetiology was gallstones in 50.6 per cent, with idiopathic the next most common (22.4 per cent). In addition to the 7.6 per cent with a diagnosis of chronic pancreatitis, 20.1 per cent of patients had a previous episode of acute pancreatitis. One in 20 patients were classed as having severe pancreatitis, as per the Atlanta criteria. The overall mortality rate was 2.3 per cent at 30 days, but rose to one in three in the severe group. Predictors of death included male sex, increased age, and frailty; previous acute pancreatitis and gallstones as aetiologies were protective. Smoking status and body mass index did not affect death. Conclusion Most patients presenting with acute pancreatitis have a mild, self-limiting disease. Rates of patients with idiopathic pancreatitis are high. Recurrent attacks of pancreatitis are common, but are likely to have reduced risk of death on subsequent admissions. </jats:sec

The association between body mass index and severity of coronavirus disease 2019 (COVID-19): A retrospective study

Background and purpose: The coronavirus disease 2019 (COVID-19) pandemic presents an unprecedented health crisis to the entireworld. As reported, the bodymass index (BMI)may play an important role in COVID-19; however, this still remains unclear. The aim of this study was to explore the association between BMI and COVID-19 severity and mortality. Methods: A retrospective, single-centred study including 88 participants with laboratory-detected SARS-CoV-2 infection admitted to designated COVID-19 centre in a tertiary care hospital from March to October, 2020 was done. Clinical records, laboratory data, and radiological findings were analysed. The impact OF BMI was evaluated to analyze their association with the severity of Covid-19 infection in these patients. Results: The severity of illness tended to increase in patients with higher BMI levels and lower BMI levels; the severity of illness in patients with BMI &lt; 18.5 kg/m2 &nbsp;was highest (90%) followed by BMI &gt; 25.0 kg/m2 &nbsp;was 79.2% when compared to patients with BMI 18.5–22.9 kg/m2 (77.8%).&nbsp; &nbsp

Mediastinal hydatid cyst rupturing into the pleural cavity associated with pneumothorax: Case report and review of the literature

Hydatid disease remains a serious health problem in Mediterranean countries. Living in a rural area is an important risk factor for the disease. Hydatid cysts are usually located in the liver, lungs and brain. Mediastinal hydatid disease is very rare and has been noted only anecdotally in the literature. The present article reports a case of a mediastinal hydatid cyst rupturing into the pleural cavity, which was associated with pneumothorax of the same side. The patient’s previous chest x-rays (posteroanterior and left lateral views) showed a well-defined mediastinal mass on the left side, and contrast-enhanced computed tomography of the thorax (taken a few days after the chest x-ray) showed multiple round-to-oval soft tissue opacities with partial collapse of the left lung. An indirect hemagglutination test for echinococcus was positive. Even after two weeks of intercostal tube drainage, the patient’s condition did not improve. During thoracotomy, multiple daughter cysts were found in the pleural cavity, and the diagnosis of a hydatid cyst was confirmed after histopathological examination