Khat Research Articles

Adsorptive removal of cadmium (II) from wastewater using activated carbon synthesized from stem of Khat (Catha edulis)

Adsorptive removal of cadmium (II) from wastewater using activated carbon synthesized from stem of Khat (Catha edulis)

UK Khat Prohibition and the Making of a Harmful Drug

This article delves into the complex dynamics of khat (Catha edulis) prohibition in the UK, with a particular focus on a Somali community in north-west London. Despite the Advisory Council on the Misuse of Drugs finding no substantial evidence of khat causing societal or medical harms and recommending public health interventions instead of prohibition, the UK Home Office classified khat as a Class C drug in June 2014. This decision raises critical questions about what constitutes a harmful drug. Based on ethnographic fieldwork conducted during the peak of prohibition discourse in 2013–14, the article explores how notions of harm operate across moral, political, and epistemological registers as people grapple with framing khat’s drug status and the effects of its use. It illustrates how prohibition discourse not only amplified perceptions of khat’s harmfulness but also sidelined the more nuanced concerns of Somali community members over persistent socioeconomic integration issues, mental health, and social marginalisation. Thus, the harm of khat may not lie in its potency as a psychoactive substance but as an object of prohibition that overshadows interventions to address the adverse conditions associated with its use among certain individuals.

The Potential Health Risks of Catha edulis Forsk (Khat) Consumption on Some Vital Organs

Abstract Introduction/Objective Introduction: Catha edulis Forsk (Khat) leaves are widely chewed by adults in the Arabian Peninsula and the Horn of Africa for their mild stimulating properties. Objectives To investigate the impact of an aqueous extract of Catha edulis Forsk leaves on the proper functioning of vital organs. Methods/Case Report Methods: Materials and methods: Twenty-five female albino rats were divided into two groups: a control group and a treated group which received a daily gavage of 1 ml of aqueous Khat extract with a concentration of 700 mg/kg body weight for four weeks. The effects of this treatment on selected organs, including the brain, hippocampus, heart, and ovaries, were assessed using various measurements and analyses. Results (if a Case Study enter NA) Results: Results: The antioxidant evaluation showed a significant increase in MDA levels in the khat group and a significant decrease in GSH, SOD, and CAT levels compared to the control group. There was a significant decrease in IL-4 and a significant increase in TNF-α and TGF-β1 compared to the control group. In contrast, the cardiac enzymes; Troponin, CK, CPK, and GOT showed a significant increase compared to the control group. The results of the hormonal assay indicated a significant increase in LH, FSH, and testosterone levels, along with a significant decrease in estrogen in the khat group compared to the control group. Furthermore, the histological investigations revealed significant changes in tissue architecture in the studied organs. In the heart, the treated group exhibited an intact, thick pericardium, along with markedly apoptotic cardiac muscle fibers and others with pyknotic nuclei and mildly congested blood vessels and capillaries. The examination of brain tissues in the treated group showed thick meninges with mild inflammatory infiltrate, marked astrogliosis with degenerated neurons in the cerebral cortex, inflammatory infiltrate with abscess formation and mildly congested blood vessels and eosinophilic plaque-like area in the deep cortex, and scattered degenerated neurons and some neurons with nuclear vacuoles and average glial cells in the white matter. In the ovaries, sections showed primary, secondary, and antral follicles, scattered cystically dilated follicles with atrophied lining, and multiple corpora lutea in the edematous stroma with scattered apoptotic stromal cells. Conclusion Based on these findings, long-term use of khat as a chewing material may harm vital organs.

Levels of organochlorine pesticides in the chewable and leftover parts of the khat (Catha edulis) sold in local markets of Jimma Town, Southwest Ethiopia

ABSTRACT This study aimed to determine the residual levels of organochlorine pesticides (OCPs) in chewable (tender leaves) and leftovers (mature leaves) of khat sold in local markets in Jimma town, southwest Ethiopia. Samples were collected from various local khat market places in Jimma town, based on their growing origin. A modified QuEChERS method was used to extract pesticides from the samples before their analysis by GC‒MS. The findings indicated that p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE) and p,p’-dichlorodiphenyltrichloroethane (p,p’-DDT) were detected in 88.3% and 76.6% of chewable samples, and in 86% and 69% of khat leftovers samples. The p,p’-DDE and p,p’-DDT levels found in chewable khat ranged from 10.12–45.39 and 8.53–34.15 µg/kg, respectively. While in leftover khat they ranged from 30.12–45.04 and 6.73–32.16 µg/kg, respectively. It was found that the concentration of p,p’-DDE is greater than its precursor compound p,p’-DDT for each sample, indicating past use of DDT in the study area. None of the detected analytes exceeded the maximum residue level (MRL) values established by the FAO/WHO or European Commission (EC) of 50 µg/kg. However, no information is available regarding these pesticides’ collective and synergetic negative impacts on consumers.

Factors Affecting Application of Modern Agrochemicals and Observance of Pre-Harvest Interval in Khat, Catha edulis (Miraa) Crops in Igembe South Sub County

In Kenya, agriculture plays a crucial role in the economic development as well as alleviating poverty in the households. Strengthening the agricultural sector will call for provision of requisite extension services and ensuring necessary agricultural inputs readily available to the farmers. Evidently, agrochemicals have boosted agricultural productivity over time. Categorized broadly as fertilizers and pesticides, agrochemicals were introduced to enhance crop yields and minimize crop losses due to soil infertility, pests, and diseases. However, use of agrochemicals has been associated with various issues including effects on the environment and specifically, problems related to human health, biodiversity, and the entire ecosystem. Thus, this study investigated factors affecting application of modern agrochemicals and the observance of Pre-Harvest Interval (PHI) in Khat (Miraa) crops protection in Igembe south sub county. The specific objectives that guided the study were to investigate the effect of environmental factors on application of agrochemicals in Khat (Miraa) crops protection and whether farmers observed recommended Pre-Harvest Interval in application of agrochemicals in Khat (Miraa) crops protection in Igembe south sub county. A descriptive research design was utilized with a target population comprising Khat (Miraa) farmers in Igembe south sub county. Purposive sampling technique was adopted in selecting the sample. Stratified sampling was adopted in selecting individual respondents from the various wards to with the strata being the ward. Yamane (1967) formula was utilized to estimate the sample size of 399 respondents. Primary data was collected using a structured questionnaire with a response rate of 79.4%. Data analysis was done using Statistical Package for Social Sciences (SPSS) version 20 and presented in figures and tables. From the analysis, the correlation between environmental factors in the application of modern agrochemicals and the protection of Khat (Miraa) crops was positive and statistically significant (?=0.546, P=0.000). The regression coefficient of environmental factors in the model was positive (r=.221) and statistically significant (P=0.000). Based on the calculated averages and PHI risk factors, majority of the farmers are categorized as high risk or very high-risk users of agrochemicals. Further statistical analysis indicated that the coefficient of the risk factor is positive (r=0.572) and statistically significant (P=0.000). Therefore, the risk factor in observance of the PHI has a significant effect on the number of farmers using specific agrochemicals. The study concluded that environmental factors and non-observance of recommended PHI, positively and significantly affects the protection of Khat (Miraa) crops. The study recommends targeted extension to sensitize Khat (Miraa) growers on importance of observing recommended PHI. Finally, the study recommends that the national and county governments ought to formulate policy guidelines that identify agrochemicals suitable in Miraa crops protection, the recommended application rates, and Pre-Harvest Intervals.

Opportunities and Constraints of Promoting Coffee Plantation in Southern Tigray, Ethiopia

In Ethiopia, coffee is a significant crop, but in the Tigray region, particularly southern Tigray, it receives less emphasis despite its national importance. This study investigates the status of coffee production in southern Tigray, Ethiopia, using a multistage sampling technique to gather data from 113 respondents during 2015. The goal is to identify opportunities and constraints in coffee production in the region. Data were collected using individual interviews and Focus Group Discussions, and analyzed using SPSS software and a ranking index. The study found that favorable agro ecology, fertile soils, accessibility to water, and existence of tolerant coffee varieties are the opportunities in southern Tigray, Ethiopia. However, constraints include irrigation competition, lack of training, limited input use, and shifting to khat (Catha edulis) cultivation. Additionally, most farmers do not practice pruning and rejuvenation due to lack of technical knowledge. This result in the coffee plants stand; more erect, less branched and unmanageably tall which rendering difficult to harvest berries. Hence, the study suggested that an integrated coffee production intervention is important to boost coffee production and local policy instrument is prerequisite that restrict the shifting of coffee to khat production in the study districts.

Nutritional status of khat (Catha-edulis) chewing adult males in Nakawa division, Kampala city, Uganda

Khat (Catha edulis) also known as “Mairungi” in Uganda, is a green shrub whose leaves are chewed in social gatherings and designated hotspots mainly for its euphoric effect. The socio-economic and health impacts of khat have been previously reported. However, the nutritional implications of khat chewing need to be investigated. A cross-sectional study with a descriptive approach was done to assess the nutritional status of adult male users of khat in the Nakawa division, Kampala city. Using chain sampling, khat users and hot spots were mapped, identified, and listed. Using simple random sampling, 100 khat users were targeted to consent for structured interviews and an assessment of nutritional status over a 3-month persuasion period. Anthropometric data were used to compute the Body Mass Index (BMI) and dietary information was assessed based on food groups consumed and thresholds of Recommended Dietary Allowances (RDA). The degree of relationship among variables was statistically evaluated using, chi-square analyses and the ANOVA test. Statistical significance was considered at P < 0.05. Confidentiality was observed by the use of anonymous questionnaires and coded datasheets. The majority of khat users chewed khat daily 56.0% and mixed khat chewing with other intoxicants such as alcohol 35.0%, cigarettes 15.0%, and cannabis 12.0%. The main driver towards khat chewing in Nakawa was peer pressure 60.0%. The Dietary Diversity Score (DDS) was low, medium and high among 20.0%, 57.0% and 23.0% of khat users, respectively. The DDS was significantly associated with the hours spent on khat chewing X2(4) 10.156, P = 0.025 with most users spending more than four hours, and the frequency of khat chewing X2(4)14.423, P = 0.038. Of the 100 respondents, 26.0% were underweight and 3.0% were overweight. The BMI was significantly associated with age P = 0.029, marital status P = 0.023, frequency of khat chewing P = 0.038, the number of meals P = 0.013 and the dietary diversity scores P < 0.001 in khat users. Khat chewing and its associated habits predispose khat users to a double jeopardy of malnutrition and non-communicable diseases (NCDs). There should be tighter control of khat use through policy and legislation with community-based measures to regulate its demand and supply. Key words: Khat Chewing, Mairungi, Nutritional Status, Body Mass Index, Nakawa, Uganda

Disposition Kinetics of Cathinone and its Metabolites after Oral Administration in Rats.

Cathinone is a natural stimulant found in the Catha edulis plant. Its derivatives make up the largest group of new psychoactive substances. In order to better understand its effects, it is imperative to investigate its distribution, pharmacokinetics, and metabolic profile. However, the existing literature on cathinone remains limited. This study aimed to investigate the disposition kinetics and metabolic profile of cathinone and its metabolite cathine through a single oral dose of cathinone administration in rats. Cathinone and cathine concentrations were identified and quantified using ion trap liquid chromatography- mass spectrometry (LC-IT/MS). The metabolic profile in the serum, brain, lung, liver, kidney, and heart was analyzed at specific time points (0, 0.5, 2.5, 6, 12, 24, 48, and 72 hours) using the ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF/MS) method. The highest concentration of cathinone was found in the kidney (1438.6 μg/L, which gradually decreased to 1.97 within 48 h and disappeared after 72 h. Cathinone levels in the lungs, liver, and heart were 859, 798.9, and 385.8 μg/L, respectively, within half an hour. However, within 2.5 hours, these levels decreased to 608.1, 429.3, and 309.1 μg/L and became undetectable after 24 h. In the rat brain, cathinone levels dropped quickly and were undetectable within six hours, decreasing from 712.7 μg/L after 30 min. In the brain and serum, cathine reached its highest levels at 2.5 hours, while in other organs, it peaked at 0.5 hours, indicating slower conversion of cathinone to cathine in the brain and serum. This study revealed a dynamic interplay between cathinone disposition kinetics and its impact on organ-specific metabolic profiles in rats. These results have significant implications for drug development, pharmacovigilance, and clinical practices involving cathinone. Investigating the correlation between the changes in biomarkers found in the brain and the levels of cathinone and cathine is essential for informed decision- making in medical practices and further research into the pharmacological properties of cathinone.

The analysis of the essential metal contents in khat (Catha edulis Forsk) from Meru County, Kenya

BackgroundChemical composition of plants has attracted considerable interest in recent years with considerable research tailored into determining metal contents in food substances. Particularly, essential elements which are necessary for normal human body functioning and are strongly recommended in optimal proportions for better health. This study determined the levels of essential elements; calcium (Ca), magnesium (Mg), sodium (Na), potassium (K) and manganese (Mn) in eleven khat (Catha edulis Forsk) samples collected from Meru County. Methodology1.0 g of dry ground khat samples were wet-digested in a solvent mixture of 10 mL of HCl, HNO3 and 20 vol of H2O2 for 3 h at variable temperature of 50–90 °C and later reconstituted in 25 mL 0.05 molL−1 HCl before analysis. The samples were analyzed using inductively coupled plasma atomic emission spectrometry (ICP AES) after acid digestion whereas Hierarchical cluster analysis (HCA) and principal component analysis (PCA) were used to investigate elemental characteristics and determine the sources of essential metals in khat. In addition, Pearson correlation coefficient (PCC) was used to evaluate the relationships between the essential metals. ResultsSpinach leaves certified reference material (CRM 1750a) was analyzed and the percentage recoveries (%) of 98.4 and 101.7 determined showing that the digestion method employed in this work had adequate accuracy. The validated method was employed for the analysis of all the khat samples. The analyzed metal concentration ranges (mg100g−1) in fresh-weight basis per day of five metals were 160.9–267.3, 44.6–81.7, 2.0–3.0, 237.6–393.6, and 220.3 -349.0 for Ca, Mg, Mn, K, and Na, respectively. Both HCA and PCA results showed that these elements could be linked to natural soils and anthropogenic sources. PCC reported significant correlations between Na and K indicating they may have been derived from the same source. The daily metal intakes were below the World Health Organization (WHO) permissible limits implying no associated health risks for khat users. ConclusionBased on the findings of this study, the consumption of khat from regions of Meru County may be a potential source for essential elements required for human biological processes.

Impact of khat (Catha edulis) and oral contraceptive use on telomerase levels and tumor suppressor genes p53 and p21 in normal subjects and breast cancer patients

This study aimed to evaluate the effects of oral contraceptive (OC) use, khat chewing, and their combined effect on telomerase level and tumor suppressor genes, p53 and p21 in breast cancer (BC) patients and normal volunteers. 140 Yemeni women aged 25–40 years old enrolled, 60 newly diagnosed pretreated BC patients, and 80 control subjects. Venous blood (5 ml) was collected and the results showed BC patients to have significantly raised levels of telomerase, p53, and p21 compared to the control group. The use of OCs significantly raised telomerase in control group with no effect in BC patients; whereas p53 and p21 were significantly increased in BC patients. On the other hand, khat chewing significantly increased p53 in controls and BC patients, whereas p21 was significantly raised in BC patients. The combined use of OCs and khat chewing significantly increased telomerase and p53 in control group, and significantly increased p53 and p21 in BC patients. Telomerase was shown to be a risk factor (OR 4.4) for BC, and the use of OCs was a high-risk factor for increasing telomerase (OR 27.8) in normal subjects. In contrast, khat chewing was shown to be protective (OR 0.142), and the combined use of OCs and khat chewing decreased the risk factor of telomerase from OR 27.8 to 2.1.

Manganese oxide-coffee husk and khat (Catha edulis) leftover biochar nanocomposites for removal of Cr(VI) from wastewater

Manganese oxide-coffee husk and khat (Catha edulis) leftover biochar nanocomposites for removal of Cr(VI) from wastewater

A quantitative analysis of vitamin C in fruits, khat (Catha edulis), and pharmaceutical tablets using potassium iodate titration

Vitamin C, or ascorbic acid, is an essential antioxidant in various resources, such as pharmaceutical tablets, fruits, and vegetables. The human body cannot synthesize it by itself. This research aims to measure the vitamin C content in 29 commonly assessable compressed tablets, effervescent tablets, fruits, and khat (Catha edulis) leaves that are found in the Yemeni local markets. This study used a redox titration method with potassium iodate. These results reveal confirmed European and American standards and no significant difference between the measured vitamin C content in the commercial tablet (p <0.05) and the amount stated on the product label, as well as the highest amount of vitamin C content in fruits in guava (111.21 mg/100 g), while the lowest amount of vitamin C is in apple (8.72 mg/100 g).

A STUDY OF ASSOCIATION AMONG BODY COMPOSITION AND KHAT CHEWING AMONG THE EMPLOYEES OF UNIVERSITY OF SCIENCE AND TECHNOLOGY, SANA’A, YEMEN

Catha edulis (khat) is a plant grown commonly in the Republic of Yemen. The leaves of small khat are chewed by the people for its stimulant action. Association between body composition, khat chewing is little known. We recruited 300 individuals 19-70 years of age from University of Science and Technology, Sana’a, Yemen. Demographic, body composition and physical activity data were collected using structured questionnaires and anthropometric measurements devices. Muscle mass (kg), body fat (kg), visceral fat (kg), waist circumference (cm) and body Mass index (kg/m2) were estimated. Participants in habit of khat chewing were 170 (56.7%) of Chewer and 130 (43.3%) of non-chewer. Participants’ mean ± SD of age was 38.7±9 years, 217 (72.3%) and 83 (27.7%) were males and females, respectively. Including 40 (13.3%) smokers and 260 (86.7%) non-smokers. Whereas 151 (88.8%) of the men and 19 (11.2%) of the women take khat, including 39 (22.9%) academics and 131 (77.1%) non-academics. In addition, 46 (27.1%) have low activity and 105 (61.8%) %) had moderate activity and 19 (11.2%) had high activity. Participants in daily khat chewing were 77 (45.3%) while 14 (8.2%), 43 (25.3%), 36 (21.2%) were 4-6 times/week, 2-3 times/week and Once/week, respectively. Participants spent an average of 4.5±2 hours per day in khat chewing sessions, with 52.9% spending 1-4 hours, 43.5% spending 5-8 hours, and 3.5% spending more than 8 hours. The majority of khat chewers reported spending around 2000 Yemeni Riyals (Y.R.) per day on khat. In terms of the impact on meal schedules, 38.8%. Khat chewers had higher muscle mass (33±6), lower body fat percentages (27.8±9), higher levels of visceral fat (9.3±4), larger waist circumferences (88.4±10) and slightly higher BMI values (25.9±4) compared with non-chewers were muscle mass (29.9±7), body fat percentages (31±12 levels of visceral fat (7.8±4), waist circumferences (82.6±11) and BMI values (24.9±4). In addition to, males khat chewers had higher muscle mass, higher visceral fat levels and higher waist circumferences values in compared with females where were muscle mass, visceral fat levels and waist circumferences low. There is no significant association between khat chewers’ status and excess body fat.

Prevalence and Factors Associated with Regular Khat Chewing Among College and University Students in Harar Town 2024

Background: Khat (Catha edulis) is an evergreen shrub that is a natural stimulant native, planted and chewed in eastern through southern parts of Africa and the Arabian Peninsula with distribution in parts of the Middle East and on the island of Madagascar. Khat chewing is becoming a common practice and great concern in university and college students because they think that it helps increase their academic performance especially during exams and for recreational purposes. It is widely understood that the consumption of Khat creates a remarkable problem for today’s youth which is not limited to individual users; rather its adverse negative consequence is believed to be challenging to a family, the community as a whole, economy and political arena of a given nation. Objective of the Study: To assess Prevalence and factors associated with regular khat chewing among college and university students in Harar town 2024. Methodology: Facility based cross sectional study was conducted in Harar Town from December 13 up to 29, 2023 on selected university and colleges. A total sample of 371 students was including on the study. Data was collected through structured questioner. Training was given for data collectors and data evaluation done on daily based. Cleaned data were entered to SPSS version 20 and multiple logistic regression analysis was used for better prediction of determinants and to reduce bias due to confounders. Those variables with P-value < 0.20 was entered in to multiple logistic regression analysis. Associations with P - value less than 0.05 was declared as statistically significant. Result: The Prevalence of khat chewing on this study was 57.4%. In multivariable analysis marital status, religion, Peers who chew khat, peers who smoke cigarette, students whose lives in rented house, Smoke cigarette while chewing chat, currently drink alcohol were associated with outcome variables. Conclusion and Recommendation: Majority of students was khat chewers for a long period of time and there also start chewing before their joining university and or college. Peer pressure, living condition and alcohol usage were significant predictors of khat chewing therefore to alleviate this problem effort on preventive measure is need by all stake holders at different levels.

Effects of Dried khat (Catha edulis) Leaves as a Natural Feed Additive on the White Leghorn Layers Performance

Khat contains many bioactive compounds that are beneficial for chickens’ health. Most of the chemical constituents found in Khat are biologically active and are used worldwide for the treatment of many diseases. However, there are few studies on the use of Khat in poultry as a nutrition, antioxidant, and antimicrobial activity. Therefore, the present study evaluated the effects of dried Khat leave (DKL) as a natural feed additive on the White Leghorn layer's performance, serum chemistry, and hematology. A total of 180 White Leghorn chickens, aged 168 days were randomly divided into four groups consisting of 45 chickens in three replications. Thirteen layers and two cocks were assigned to each replication and reared on a deep litter system. The diets of layers in T1, T2, T3, and T4 were supplemented by DKL at proportion of 0%, 0.2%, 0.4%, and 0.6%, respectively. The layers were evaluated for feed intake, body weight gain, egg production, feed conversion ratio, and some blood parameters, such as total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, albumin, globulin, red blood cells, hemoglobin, packed cells volume, white blood cells, and total protein. Feed intake in T1 (103.5 g) was significantly higher than T4 (98.5 g) and T3 (98.9 g). Layers in T1 significantly gained higher body weight than layers in other treatments. The use of DKL in layer chickens’ diet did not affect egg production, egg mass, and feed conversion ratio. An increase in the level of DKL in the layers diet significantly reduced the serum high-density lipoprotein, cholesterol, and albumin. The present study showed that chickens that received a higher proportion of dried khat leaf (0.6%) significantly recorded lower levels of low-density lipoprotein and total cholesterol in their blood.

Catha edulis Leaves: Morphological Characterization and Anti-Inflammatory Properties in an In Vitro Model of Gastritis.

Khat leaves, indigenous to eastern Africa, have been chewed for centuries for their stimulant effects, attributed to alkaloids such as cathinone and cathine. Although associated with gastric disorders like gastritis and gastro-oesophageal reflux disease, the underlying molecular mechanisms remain unclear. This study aimed to examine the morpho-anatomy of khat leaves using light microscopy and histochemistry and to assess the effects of leaf extracts and alkaloids on human gastric epithelial cells (GES-1). The study identified specific cells in the palisade-spongy transition zone as storage sites for psychoactive alkaloids. Leaf extracts were prepared by mimicking the chewing process, including a prolonged salivary phase followed by a gastric phase. Cytotoxicity and cell viability were evaluated using LDH and MTT assays, respectively. Additionally, the impact on IL-8 secretion, a key chemokine in gastric inflammation, was analysed under normal and TNF-α-stimulated conditions. The results showed no increase in cytotoxicity up to 250 µg/mL. However, there was a significant decrease in cell metabolism and a reduction in both basal and TNF-α-induced IL-8 secretion, but cathinone and cathine were inactive. These findings suggest that khat may not directly cause the gastric issues reported in the literature, which would rather be attributed to other confounding factors, highlighting the need for further research to clarify its biological impacts.

Association between Chewing Khat (Catha edulis) and Hematological Indices and Helicobacter pylori Infection and Blood Loss in the Gastrointestinal Tract of Yemeni Chewers.

Background: The available data on the effect of Khat chewing on hematological indices are conflicted and mainly based on animal studies. The aim of this study was therefore to investigate the effect of Khat chewing on hematological indices in humans as well as the possible association of Khat chewing with H. pylori infection and blood loss in the gastrointestinal tract. Patients and Methods: This study was a comparative cross-sectional study, carried out on 140 participants aged 18 - 55 years old; 71 were healthy non-Khat chewers serving as a control group and 69 were regular Khat chewers. Complete blood count was analyzed as well as H. pylori antigen and occult blood in stool were investigated. Results: Hemoglobin concentration, MCV, MCH, and PCV were significantly (p = 0.037, 0.034, 0.043, and 0.019 respectively) lower in Khat chewers as compared with non-Khat chewers, whereas platelets count and white blood cells count were significantly (p = 0.006 and 0.007 respectively) higher in Khat chewers. Khat chewing was also associated with H. Pylori infection (OR: 2.7) and blood loss in the gastrointestinal tract (OR: 3.2). Conclusion: Khat chewing adversely affects hematological indices and increases the risk of H. Pylori infection and blood loss in the gastrointestinal tract.

Prevalence and associated factors of congenital anomalies in Ethiopia: A systematic review and meta-analysis.

Congenital anomalies represent a significant contributor to infant mortality, morbidity, and enduring disability. With this in mind, the present investigation endeavour to ascertain the pooled prevalence of congenital anomalies and associated determinants among neonates in Ethiopia. PubMed, Google Scholar, CINAHAL, Hinari, and Global Health databases were systematically searched. Joanna Briggs Institute (JBI) assessment checklist was used to assess quality of included studies. Data were extracted from database and exported to stataMP-17 for analysis. Pooled prevalence was determined using DerSimonian-Laird random effects model. The degree of heterogeneity and Publication bias were assessed using I2 statistics and Eggers test, respectively. Study protocol was registered under PROSPERO ID CRD42021229140. A total of 18 studies with 519,327 participants were included in the study. Pooled prevalence of congenital anomalies in Ethiopia was 2% (95% CI: 0.02, 0.03%). Among affected newborns neural tube defect (48%) was the most common congenital anomaly in Ethiopia, followed by orofacial cleft (19%). Risk factors such as alcohol consumption (pooled OR: 2.28, 95% CI: 1.54, 3.38), lack of folic acid supplement (pooled OR: 2.83, 95% CI: 1.09-7.36), medication during pregnancy (pooled OR: 2.58, 95% CI: 1.03-6.47), khat (Catha edulis) chewing (pooled OR: 2.44, 95% CI: 1.61-3.71), exposure to pesticides (pooled OR: 4.45, 95% CI: 2.44-8.09) and maternal illness (pooled OR:1.79, 95% CI: 1.03, 3.10) had statistically significant association with congenital anomalies in Ethiopia. In this review, prevalence of congenital anomalies in Ethiopia was high with considerable regional variation. The most common type of congenital anomaly in Ethiopia was neural tube defects, followed by oro-facial cleft. Alcohol consumption, inadequate intake of folic acid, khat chewing, maternal diseases, exposure to pesticides, and use of medication during pregnancy were identified as potential contributors to congenital abnormalities in Ethiopia.

Vortex-assisted dispersive micro-solid-phase extraction using silica-supported Fe2O3-modified khat (Catha edulis) biochar nanocomposite followed by GC-MS for the determination of organochlorine pesticides in juice samples

In this paper, dispersive micro-solid phase extraction technique was developed for the purpose of extracting and preconcentrating organochlorine pesticide residues in juice samples before their separation and quantitative analysis by gas chromatography-mass spectrometry. A sorbent composed of a silica-supported Fe2O3-modified khat leftover biochar nanocomposite (SiO2-Fe2O3-KLBNC) was implemented in the process. To improve the dispersion of the sorbent in the solution, vortex mixer was employed. Experimental parameters influencing the performance of the method were optimized, and the optimal conditions were established. With these conditions, linear dynamic ranges ranged from 0.003 to 100.0 ng/mL were achieved, with a correlation coefficient (r2) ≥ 0.9981. The limits of detection and quantification, determined by signal-to-noise ratios of 3 and 10, respectively, were found to be in the ranges of 0.001–0.006 ng/mL and 0.003–0.020 ng/mL. Intra- and inter-day precision, values ranging from 0.3–4.8% and 1.7–5.2% were obtained, respectively. The matrix-matched extraction recoveries demonstrated favorable outcomes, falling within the range of 83.4–108.3%. The utilization of khat leftover as an adsorbent in contemporary sample preparation methodologies offers a cost-effective alternative to the currently available, yet expensive, adsorbents. This renders it economically viable, particularly in resource-constrained regions, and is anticipated to witness widespread adoption in the coming future.

Exploring the efficacy of catha edulis extract-loaded nanofibrous scaffolds seeded with bone marrow-derived stem cells for diabetic wound healing: A preclinical investigation

Objectives: The aim of this study was to investigate the potential of incorporating catha edulis extract into polycaprolacton/gelatin scaffolds using electrospinning technique for the treatment of diabetic wounds in a rat model. Methods: The in vitro characterization of the scaffolds was performed using various assays, including anti-inflammatory assay, microstructure study, DPPH radical scavenging assay, cell viability assay, hemocompatibility assay, and bacterial penetration assays. The scaffolds were then seeded with bone marrow-derived stem cells and cultured before implantation into the rat model. Results: The results of the in vitro study showed that the produced scaffolds were nanofibrous, antioxidative, and non-toxic to skin cells. In vivo study demonstrated that the stem cell and catha edulis extract-loaded scaffolds had the highest rate of wound closure and histomorphometric parameters compared to other groups. Moreover, gene expression studies showed that the developed wound dressings increased the expression of VEGF gene and reduced the expression of glutathione peroxidase gene. Conclusion: These findings suggest that the catha edulis extract-loaded polycaprolacton/gelatin scaffolds could be a promising therapeutic option for diabetic wounds.