Characterization of functional genes GS3 and GW2 and their effect on the grain size of various landraces of rice (Oryza sativa).

BACKGROUND: Grain size is an essential factor of grain quality and yield in rice. The genetic studies have substantially contributed to enhancing yield and maintaining a good quality of rice. The two major genes GS3 (a negative regulator of grain length) and GW2 (a negative regulator of grain width) with functional mutation play a significant role in controlling the grain size of rice. METHODS AND RESULTS: In the study, 17 different widely grown Pakistani landraces of various genetic and geographic backgrounds were evaluated for grain phenotypic traits (1000-grain weight, length, width, and thickness) and also screened for genotypic mutation in GS3 and GW2 genes. Phenotypic data revealed the range for grain weight from 16.86 g (Lateefy) to 26.91 g (PS2), grain length ranged from 7.27 mm (JP-5) to 12.18 mm (PS2), grain width ranged from 2.01 mm (Lateefy) to 3.51 mm (JP5), and grain thickness ranged from 1.79 mm to 2.19. Correlation revealed a negative and significant correlation between grain width and length. There was no significant correlation between grain length and 1000-grain weight and grain width. LSD test displayed that the means of three variables grain length, grain width, and 1000-grain weight were statistically different from one another except grain width and grain breadth. Fifteen accessions carried the domesticated allele of GS3 while JP5 and Fakhr-e-Malakand carried the dominant allele. Similarly, fifteen accessions carried the dominant allele of GW2 while JP-5 and Fakhr-e-Malakand carried the mutant allele. CONCLUSIONS: The study shows that the mutant alleles of both genes are of significance to pyramid them in any breeding program. However, just incorporating favorable alleles is not the sole solution for improving the grain size. Therefore, further elucidation of GS3 and GW2 genes regulatory network, their interaction, trade-off, and pathways will better coordinate their marker-assisted selection in the future breeding program. Additionally, the study concluded that the selection of grain size was not dependent on 1000-grain weight in the selected germplasm.

Effect of size on the surgical management of pulmonary hydatid cyst.

BACKGROUND: Hydatid cyst disease is a parasitic disease caused Echinococcus granulosus. Hydatid cysts of 10 cm or greater in diameter are called "giant" cysts and traditionally have been considered to be more difficult to treat surgically often requiring pulmonary resection. In this study we reviewed our experience with pulmonary hydatid cysts. METHODS: This study was carried out in Thoracic surgery unit Lady Reading Hospital Peshawar, from 1st June 2007 to 31st May 2012. Patients admitted with intra-thoracic hydatid cysts were evaluated. Patients were divided into 2 groups, i.e., patients who had cysts < 10 cm (group A) and those who had large cysts which were 10 cm (group-B). Data regarding age, sex, symptoms, diagnostic procedures, anatomic location of cysts, surgical procedures, complications, and outcomes were collected and analysed. RESULTS: Total of 224 patients underwent hydatid cystectomy. Group A comprised 190 patients (85%), Group-B comprised 34 patients (15%). Large cysts were more common in younger patients. The most frequent complaints were cough, chest pain, and dyspnea. Patients with large cysts were more often symptomatic at presentation. In both groups, lower-lobe locations predominated. Parenchyma-saving operations were almost uniformly performed for each group; however, a higher percentage of patients in group B required anatomic resection (5.8% vs. 1%). Cystic rupture occurred more frequently in group-B than in group-A (26% vs. 12%). There were no deaths in either group, and the morbidity was 23 (12%) in (group-A) and 6 (17.6%) in (group- B). CONCLUSION: Large hydatid cysts of the lung occurred more often in younger patients and were more often symptomatic at presentation. Regardless of size, the cysts could usually be surgically treated without lung resection, and size did not appear to influence short-term post-perative outcomes.

Personality types and specialist choices in medical students.

BACKGROUND: Research on the correlation between personality and students' specialty choice is helpful in their career counselling process and in predicting the future distribution of the specialties in a country. AIMS: This study is the first of its kind in the Arab world. The research questions were: (1) What is the influence of gender on the personality profiles of medical students? (2) What are the personality profiles of students categorized according to their preferred specialist choices? (3) What are the preferred career choices of students categorized according to the stage of their medical education? METHOD: A cross-sectional study was performed at King Khalid University Medical School including 590 students during the academic year 2010-2011. A long version of the Zuckerman-Kuhlman personality questionnaire measuring five personality factors was used. Students were also asked for their specialty interests. Students were asked by means of a written questionnaire. RESULTS: Study response was 92.5%. Surgery was the single most popular specialty amongst both male and female students. Males had significantly higher scores on the 'impulsive sensation seeking' scale and students preferring a surgery specialty had the highest score on the 'impulsive sensation seeking', 'neuroticism-anxiety', 'aggression-hostility' and 'sociability' scales. Hospital-based, surgical and primary care specialties became more popular as students progressed through their undergraduate years. CONCLUSIONS: Different personality types have distinct preferences in medical students' choice of careers. Personality and specialty choice research can enhance career counselling of medical students and fresh graduates. This also has implications for predicting the specialty distribution of the future health careers.

Effectiveness of Evidence Based Physical Therapy Management Approaches in Sacroiliac Joint Dysfunction: A Meta-analysis.

Worldwide the prevalence of sacroiliac joint dysfunction (SIJD) lies within a range of 13% to 30%. In approximately 10% to 25% of patients, SIJD is a cause of mechanical low back and leg pain. A total of 498 subjects included in 10 studies conducted from 2018 to 2022 were included in this analysis. The guidelines of PRISMA were followed for study identifications and analysis in which pain and disability were monitored as an outcome measure. The results revealed statistically significant findings of physical therapy-based management approaches in decreasing pain (SMD -1.068, p=0.0001, I2=95.11%) and lowering the levels of disability (SMD -0.997, p=0.0001, I2=95.76%) among patients with SIJD as estimated using a random effect model. It was concluded that physical therapy-based management approaches ranging from combined exercise therapy to MET and K-taping are significantly more effective than traditional approaches. Key Words: Exercise, Sacroiliac joint, Pain, Disability, Physical therapy, Muscle energy technique, Kinesiotaping.

Identification of C-T novel polymorphism in 3rd exon of OsSPL14 gene governing seed sequence in rice.

Recently food shortage has become the major flagging scenario around the globe. To resolve this challenge, there is dire need to significantly increase crop productivity per unit area. In the present study, 24 genotypes of rice were grown in pots to assess their tillering number, number of primary and secondary branches per panicle, number of grains per panicle, number of grains per plant, and grain yield, respectively. In addition, the potential function of miR156 was analyzed, regulating seed sequence in rice. Furthermore, OsSPL14 gene for miR156 was sequenced to identify additional mutations within studied region. The results demonstrated Bas-370 and L-77 showed highest and lowest tillers, respectively. Bas-370, Rachna basmati, Bas-2000, and Kashmir Basmati showed high panicle branches whereas, L-77, L-46, Dilrosh, L-48, and L-20 displayed lowest panicle branches. Bas-370 and four other studied accessions contained C allele whereas, L-77 and 18 other investigated accessions had heterozygous (C and T) alleles in their promoter region. C-T allelic mutation was found in 3rd exon of the OsSPL14 gene. The sequence analysis of 12 accessions revealed a novel mutation (C-T) present ~2bp upstream and substitution of C-A allele. However, no significant correlation for novel mutation was found for tillering and panicle branches in studied rice accessions. Taken together present results suggested novel insight into the binding of miR156 to detected mutation found in 3rd exon of the OsSPL14 gene. Nevertheless, L-77, L-46, Dilrosh, L-48, and L-20 could be used as potential breeding resource for improving panicle architecture contributing yield improvement of rice crop.

Diabetes-care practices and related awareness amongst type-2 diabetes patients attending diabetes OPD at a tertiary care hospital in southwestern Saudi Arabia.

BACKGROUND: Diabetes is the most prevalent disease in Saudi Arabia having vast health and economic implications. Hence, it is important that all measures must be undertaken to prevent and control the disease. OBJECTIVES: This study was performed to assess the diabetes-care practice and related awareness of patients of type 2 diabetes attending the outpatient department of a diabetes care center at a tertiary care hospital in southwestern Saudi Arabia. METHODS: A descriptive cross-sectional approach was used wherein patients attending the outpatient department of the diabetes treatment center of a tertiary hospital in the southern region of the Kingdom of Saudi Arabia were surveyed, using a predesigned pretested questionnaire covering the study variables. RESULTS: The study included 287 individuals with type 2 diabetes in the age range 25 years to 90 years (mean age = 55.5 years). Around 57% of the participants were females while the rest were males. CONCLUSION: The present study showed that awareness about diabetic complications among the study population is good, especially among young educated patients who adhere to regular medical follow-up. Attending physicians were a major source of awareness for the patients.

Tube thorocostomy: management and outcome in patients with penetrating chest trauma.

BACKGROUND: Penetrating chest trauma is common in this part of the world due to present situation in tribal areas. The first line of management after resuscitation in these patients is tube thoracostomy combined with analgesia and incentive spirometry. After tube thoracostomy following surgery or trauma there are two schools of thought one favours application of continuous low pressure suction to the chest tubes beyond the water seal while other are against it. We studied the application of continuous low pressure suction in patients with penetrating chest trauma. This Randomized clinical controlled trial was conducted in the department of thoracic surgery Post Graduate Medical Institute Lady Reading Hospital Peshawar from July 2007 to March 2008. The objectives of study were to evaluate the effectiveness of continuous low pressure suction in patients with penetrating chest trauma for evacuation of blood, expansion of lung and prevention of clotted Haemothorax. METHODS: One hundred patients who underwent tube thoracostomy after penetrating chest trauma from fire arm injury or stab wounds were included in the study. Patients with multiple trauma, blunt chest trauma and those intubated for any pulmonary or pleural disease were excluded from the study. After resuscitation, detailed examination and necessary investigations patients were randomized to two groups. Group I included patients who had continuous low pressure suction applied to their chest drains. Group II included those patients whose chest drains were placed on water seal only. Lung expansion development of pneumothorax or clotted Haemothorax, time to removal of chest drain and hospital stay was noted in each group. RESULTS: There were fifty patients in each group. The two groups were not significantly different from each other regarding age, sex, pre-intubation haemoglobin and pre intubation nutritional status. Full lung expansion was achieved in forty six (92%) patients in group I and thirty seven (74%) in group II. Partial lung expansion or pneumothorax was present in three (60%) in group I and 10 (20%) in group II. One patient in group I and three (6%) patients in group II had no response. The mean time to removal of chest drains were 8.2 +/- 3.14 days in group I and 12.6 +/- 4.20 days in group II. The length of hospital stay was 7.2 +/- 2.07 days and 12.4 +/- 3.63 days in group I and II respectively. Clotted Haemothorax requiring surgery developed in three (6%) patients in group I and 8 (16%) patients in group II. CONCLUSION: Placing chest tubes on continuous low pressure suction after penetrating chest trauma helps evacuation of blood, expansion of lung and prevents the development of clotted Haemothorax. It also reduces the time to removal of chest drains, the hospital stay and the chances of surgery for clotted Haemothorax or Empyema.