Wheat (<em>Triticum aestivum</em> L.) in the Rice-Wheat Systems of South Asia Is Influenced by Terminal Heat Stress at Late Sown Condition: A Case in Bangladesh

Wheat plays an important role in attaining food and nutritional security in Bangladesh after rice. The demand of wheat has been increasing every year at the rate of 13% due to rapid changes in dietary habits, socio-economic upliftment, enhancement of per capita income, etc. Bangladesh Wheat and Maize Research Institute (BWMRI) has already released 34 high yielding, disease-resistant, and abiotic stress-tolerant wheat varieties, and improved management practices to the farmers. Although all the released varieties have climatic yield potential as high as 6.0 t ha−1 with the attainable average yield is 4.0–4.5 t ha−1, the national average yield in farmers’ field is only 3.49 t ha−1; it is specified that there is a huge yield gap existing among potential, attainable and actual yields. One of the most important reasons for this yield gap of wheat is the terminal high temperature stress (HS) in late sowing wheat. Generally, farmers in Bangladesh are sowing wheat lately due to delay in sowing monsoon rice and subsequent late harvest of the rice; as a result, late sown wheat faces terminal HS at reproductive stage. The chapter highlighted the consequences of terminal HS on wheat and potential approaches to mitigate the stress in Bangladesh

Antimicrobial and Cytotoxic Activity of Three Bitter Plants-Enhydra fluctuans, Andrographis Peniculata and Clerodendrum Viscosum.

Purpose: In this study, three important medicinal plants (Enhydra fluctuans Lour, Clerodendrum viscosum Vent and Andrographis peniculata Wall) of Bangladesh were investigated to analyze their antimicrobial and cytotoxic activities against some pathogenic microorganisms and Artemia salina (brine shrimp nauplii). Methods: The coarse powder material of leaves of each plant was extracted separately with methanol and acetone to yield methanol extracts of leaves of Enhydra fluctuans (MLE), Clerodendrum viscosum (MLC) and Andrographis peniculata (MLA), and acetone extracts of leaves of Enhydra fluctuans (ALE), Clerodendrum viscosum (ALC) and Andrographis peniculata (ALA). The disc diffusion method and the method described by Meyer were used to determine the antimicrobial and cytotoxic activities of each plant extract. Results: Among the test samples, MLE and ALE showed comparatively better antimicrobial activity against a number of bacteria and fungi with inhibition zones in the range of 06-15 mm and according to the intensity of activity, the efficacy against microorganisms were found in the order of Enhydra fluctuans> Andrographi speniculata> Clerodendrum viscosum. In cytotoxicity assay, all samples were found to be active against brine shrimp nauplii (Artemia salina) and ALA produced lowest LC50 value (7.03 μg/ml). Conclusion: Enhydra fluctuans and Andrographi speniculata possesses significant antimicrobial and cytotoxic activities

Incidence and Outcome of Vocal Cord Polyp: An Endoscopic Experience and Perception

Background: The larynx is an intricate part of the body which has to perform a very composite function like protection, respiration, phonation. To carry out the function, larynx should be adaptable and flexible. Any structural disorder like vocal cord polyp alter these specialized function and squander the laryngeal pacing, and increasing voice discomfort of the patient like hoarseness, dysphonia, and odynophagia day by day. Phonosurgery is the mainstay of treatment. Methods: It is a cohort retrospective study of 54 cases in the Department of Otolaryngology and Head- Neck Surgery, Comilla Medical College, Bangladesh, from 20 February 2017 to 27 October 2019. Result: Incidence of vocal cord polyp in laryngeal disorder patient was 6.83%, and the laryngeal operative patient was 28.27%. All patients were treated by micro laryngeal surgery with rigid Hopkin’s laryngeal telescope, and setback was 2 (3.70%). Of them, male were 41(75.92%), females were 13(24.08%), below 20 years were 2(3.70%), 20-50years 39(72.23%,) and above 50years 13(24.07%), unilateral was 50(92.59%) and 4(7.41%) were bilateral, smoker was 41(75.92%), nonsmoker 13(24.08%), industrial workers were 21(38.89%), professional voice user was 13(24.07%)

Kashima Operation: an endoscopic phonosurgery by LASER for bilateral vocal cord palsy

Complete or partial restriction of the vocal cords usually occurs due to cancer, neurologic causes or mechanical causes like huge neck mass, trauma to the neck, viral infection, and sometimes iatrogenic during surgery. Bilateral vocal cord palsy is a severe condition that can lead to significant problems in breathing, speaking, and swallowing. If any patient presents with stridor, it requires urgent surgical airway management followed by specific treatment. A case of viral bilateral abductor vocal cord palsy in a 41-year-old female is reported here. The patient presented with stridor, and immediate tracheostomy was done. The stridor developed first 3 months earlier followed by cold and fever for a week. The stridor worsened gradually and leads to a state of commencing immediate tracheostomy. There was no history of trauma to the neck or any neck surgery. All basic laboratory blood test was within the normal limit. The laryngoscopic examination showed both vocal cords were immobile and almost median position with a small gap at the posterior commissure. Chest and neck plain X-ray along with computed tomography scan of neck was normal which ruled out the other causes of bilateral vocal cord palsy. The patient subsequently underwent successful left posterior cordectomy by laser, and decannulation of tracheostomy was done, known as Kashima operation

Incidence and outcome of thyroglossal duct cyst

Background: Thyroglossal duct cyst (TGDC) is the cyst in the cervical midline that arises from the embryonic remnant of the thryroglossal duct. It is most common congenital abnormality in the head and neck region which may present at any age particularly occur in children. The definitive treatment is surgical excision of the cyst and tract. Methods: It is a cohort retrospective study of 26 cases in the Department of Otorhinolaryngology and Head-Neck surgery, Comilla Medical College Hospital, Bangladesh from 01 July 2016 to 31 June 2019. Results: Incidence of TGDC was 0.02% out of total outdoor patient and 0.94% in total indoor routine operation. All patient was operated by Sistrunk’s procedure and recurrent 2 (7.69%) cases were operated by modified or extended Sistrunk’s procedure without complications afterwards. Of them female was 14 (53.85%), male was 12 (46.15%), children were 22 (84.61%), adult were 4 (15.35%). Infrahyoid was 21 (80.76%), surahyoid was 5 (19.24%). The patient presented as painful abscess were 10 (38.46%) and fistula were 3(11.51%), painless cyst was 8 (30.77%) and fistula were 5 (19.24%). Conclusions: TGDC is common congenital anomaly. It has a various type of presenting feature. Sistrunk’s procedure is gold standard surgical treatment procedure. But recurrence cases need modified or extended Sistrunk’s procedure to minimize the postoperative complication and manage the patient’s hope and requirements

Olfactory dysfunction: a diagnostic symptom of COVID-19

Besides the common respiratory symptoms or viral pneumonia, COVID-19 is also presented with different neurological symptoms. Olfactory dysfunction (OD) or impairment of the sense of smell is one of the common neurological symptoms being reported in infection caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). The severity varies from anosmia to microsmia or hyposmia. OD could have a potential early screening and diagnostic value besides other neurological and common respiratory symptoms. In our descriptive concise review, we aimed to elicit the manifestation of olfactory dysfunction as an early predictor of SARS-CoV-2 infection. We are also aiming to establish, OD as a quick and reliable assessment tool of COVID-19 risk, among the healthcare workers and contact tracers, which can justify self-quarantine of the person as well as recommendation for testing on a priority basis. We have also focused on, any effect to produce this symptom by the drug used for treatment in COVID-19, and if the old age of the patient showing any extra influence to develop OD in COVID-19

Di-l-methacrylato-j4O:O0-bis[aquabis(1,10-phenanthroline-j2N,N0)-copper(II)] dinitrate dihydrate

The title complex, [Cu2(C4H5O2)2(C12H8N2)2(H2O)2](NO3)2- 2H2O, contains a dimeric [Cu2(C4H5O2)2(C12H8N2)2- (H2O)2]2+ dication with two five-coordinated CuII ions linked by two methacrylate ions in a syn–syn bridging arrangement.The dication possesses pseudo-twofold rotational symmetry.The pentacoordination of each CuII ion has a distorted squarepyramidal geometry, with two N donors from a phenanthroline ligand and two carboxylate O atoms occupying basal sites and the apical position being occupied by a water molecule. In the crystal packing, molecules are linked to form a threedimensional framework by O—H O and C—H O hydrogen bonds and – interactions [centroid–centroid distances of 3.6039 (15), 3.5301 (15), 3.6015 (15),3.6496 (15) and 3.6858 (15) A ° ]

latrogenic and Idiopathic Vocal Cord Paralysis: A Real Obligation of Endoscopic Appraisal

Background: The larynx is an inevitable mouthpiece of the human body which has to execute very associated assignment like protection, respiration, and phonation. To fulfill this mission, the larynx should be accommodated, integrated, and sensible. The vocal cord is the concern of larynx, which served all-purpose. If any occurrence due to iatrogenic, idiopathic, or any other causes shut down the vocal cord mobility, the patient is facing miserable complexity in their life. Methods: It is a cohort retrospective study of 67 cases in the department of otolaryngology and HeadNeck Surgery, Bangladesh, from 01 July 2016 to 31 June 2019